/* ==========================================================================
   1. CSS RESET & DESIGN SYSTEM VARIABLES (PREMIUM LIGHT THEME)
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --font-main: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Color System */
    --bg-main: #F8F9FD;
    --bg-surface: #FFFFFF;
    --bg-surface-translucent: rgba(255, 255, 255, 0.88);
    --bg-subtle: #F1F4F9;
    --bg-active: #EEF2FF;
    --border-color: #E2E8F0;
    --border-hover: #CBD5E1;
    
    --text-main: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --text-white: #FFFFFF;

    /* Accent Colors */
    --brand-primary: #4338CA;        /* Deep Indigo */
    --brand-primary-hover: #3730A3;
    --brand-light: #EEF2FF;
    --brand-glow: rgba(67, 56, 202, 0.15);

    --accent-blue: #2563EB;         /* Royal Azure */
    --accent-blue-light: #EFF6FF;

    --live-red: #EF4444;            /* Pulsing Live State */
    --live-red-light: #FEF2F2;

    --premium-amber: #D97706;       /* Premium Gold Badge */
    --premium-amber-light: #FFFBEB;

    --success-green: #10B981;       /* Score Passed State */
    --success-green-light: #ECFDF5;

    /* Spacing & Radii */
    --radius-xs: 6px;
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --radius-pill: 9999px;

    --text-xs: 10px;
    --text-sm: 12px;
    --text-md: 14px;
    --text-lg: 16px;
    --text-xl: 18px;
    --text-2xl: 20px;

    /* Elevation & Shadows */
    --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 8px 20px -4px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 16px 32px -6px rgba(15, 23, 42, 0.10);
    --shadow-hover: 0 12px 28px -4px rgba(67, 56, 202, 0.14);

    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    --max-width: 1320px;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
    overflow-x: hidden;
    padding-bottom: 80px; /* Safe Area Space for Mobile Bottom Nav */
}

@media (min-width: 1024px) {
    body {
        padding-bottom: 40px;
    }
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; border: none; outline: none; background: none; }
button, .btn, .nav-item, .mobile-nav-item, .filter-chip, .notice-btn { cursor: pointer; user-select: none; }
img { max-width: 100%; display: block; object-fit: cover; }

/* ==========================================================================
   2. UTILITY & BADGE SYSTEM
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 8px;
}

@media (min-width: 768px) {
    .container { padding: 0 12px; }
}

.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-center { display: flex; align-items: center; justify-content: center; }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-live {
    background-color: var(--live-red-light);
    color: var(--live-red);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.badge-live .pulse-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--live-red);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
    animation: pulse-red 1.6s infinite;
}

@keyframes pulse-red {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.badge-premium { background-color: var(--premium-amber-light); color: var(--premium-amber); border: 1px solid rgba(217, 119, 6, 0.25); }
.badge-brand { background-color: var(--brand-light); color: var(--brand-primary); }
.badge-success { background-color: var(--success-green-light); color: var(--success-green); }
.badge-neutral { background-color: var(--bg-subtle); color: var(--text-secondary); }

/* ==========================================================================
   3. BUTTON SYSTEM
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: var(--radius-xs); }
.btn-lg { padding: 14px 26px; font-size: 15px; border-radius: var(--radius-md); }

.btn-primary {
    background-color: var(--brand-primary);
    color: var(--text-white);
    box-shadow: 0 2px 6px rgba(67, 56, 202, 0.25);
}

.btn-primary:hover {
    background-color: var(--brand-primary-hover);
    box-shadow: 0 4px 12px rgba(67, 56, 202, 0.35);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--bg-surface);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover { border-color: var(--border-hover); background-color: var(--bg-subtle); }
.btn-ghost { color: var(--text-secondary); background: transparent; }
.btn-ghost:hover { background-color: var(--bg-subtle); color: var(--text-main); }

.btn-live {
    background-color: var(--live-red);
    color: var(--text-white);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.btn-live:hover { background-color: #DC2626; transform: translateY(-1px); }

.btn-premium {
    background-color: var(--premium-amber);
    color: var(--text-white);
    box-shadow: 0 2px 8px rgba(217, 119, 6, 0.3);
}

.btn-premium:hover { background-color: #B45309; }

/* ==========================================================================
   4. GLOBAL APP HEADER & NAVIGATION
   ========================================================================== */
.app-header {
    position: sticky;
    top: 0;
    z-index: 900;
    background-color: var(--bg-surface-translucent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    height: 68px;
    display: flex;
    align-items: center;
}

.header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }

.brand-logo { 
    display: flex; 
    align-items: center; 
    gap: 6px; 
    cursor: pointer; 
    text-decoration: none; 
    transition: opacity var(--transition-fast);
}

.brand-logo:hover {
    opacity: 0.92;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background:  url('../../assets/images/logo.jpeg') no-repeat center/cover;
    border-radius: var(--radius-pill);  
    border: 1px solid rgba(0 ,0,0, 0.08);
}

.logo-text-group { display: flex; flex-direction: column; }
.brand-title { font-size: 16px; font-weight: 800; letter-spacing: -0.4px; color: var(--text-main); line-height: 1.2; }
.brand-subtitle { font-size: 10.5px; font-weight: 600; color: var(--brand-primary); letter-spacing: 0.3px; }

/* ==========================================================================
   LEFT DESKTOP SIDEBAR & MODERN APP SHELL
   ========================================================================== */
.app-layout-shell {
    display: flex;
    min-height: calc(100vh - 68px);
    position: relative;
    width: 100%;
}

.left-desktop-sidebar {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    bottom: 0;
    width: 256px;
    background: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    z-index: 850;
    flex-direction: column;
    justify-content: space-between;
    transition: transform var(--transition-normal);
}

.sidebar-mobile-header {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: 16px 14px 14px 14px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-surface);
}

@media (max-width: 1023px) {
    .sidebar-mobile-header {
        display: flex;
    }
}

.sidebar-close-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    cursor: pointer;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.sidebar-close-btn:hover {
    background: var(--live-red-light);
    color: var(--live-red);
    border-color: rgba(239, 68, 68, 0.3);
}

.sidebar-scroll-content {
    padding: 16px 12px;
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 18px;
    scrollbar-width: thin;
    scrollbar-color: var(--border-hover) transparent;
}

.sidebar-scroll-content::-webkit-scrollbar {
    width: 4px;
}
.sidebar-scroll-content::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 4px;
}

.sidebar-nav-group {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.sidebar-group-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.6px;
    padding: 4px 12px 6px 12px;
    text-transform: uppercase;
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    text-decoration: none;
    position: relative;
}

.sidebar-nav-item .nav-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.sidebar-nav-item:hover {
    background: var(--bg-subtle);
    color: var(--text-main);
}

.sidebar-nav-item:hover .nav-icon {
    color: var(--brand-primary);
}

.sidebar-nav-item.active {
    background: var(--brand-light);
    color: var(--brand-primary);
    font-weight: 700;
}

.sidebar-nav-item.active .nav-icon {
    color: var(--brand-primary);
}

.sidebar-nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 3.5px;
    background: var(--brand-primary);
    border-radius: 0 4px 4px 0;
}

.sidebar-pill-badge {
    margin-left: auto;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: var(--radius-pill);
    letter-spacing: 0.2px;
}

/* Sidebar Footer User Card */
.sidebar-user-footer {
    padding: 12px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-surface);
}

.sidebar-user-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: var(--radius-md);
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.sidebar-user-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-active);
}

.sidebar-avatar-img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-pill);
    object-fit: cover;
    border: 2px solid var(--bg-surface);
}

.sidebar-user-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.sidebar-user-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-id {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-arrow {
    font-size: 11px;
    color: var(--text-muted);
}

/* Main Viewport Adjustments for Sidebar */
.app-main-viewport {
    flex: 1;
    min-width: 0;
    width: 100%;
}

@media (min-width: 1024px) {
    .left-desktop-sidebar {
        display: flex;
        transition: transform var(--transition-normal);
    }

    .app-main-viewport {
        margin-left: 256px;
        transition: margin-left var(--transition-normal);
    }

    .app-layout-shell.sidebar-collapsed .left-desktop-sidebar {
        transform: translateX(-100%);
    }

    .app-layout-shell.sidebar-collapsed .app-main-viewport {
        margin-left: 0;
    }
}

/* Sidebar Drawer Backdrop for Mobile */
.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 950;
    transition: opacity var(--transition-normal);
}

@media (max-width: 1023px) {
    .left-desktop-sidebar {
        display: flex;
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        z-index: 1000;
        transform: translateX(-100%);
        box-shadow: none;
    }

    .left-desktop-sidebar.drawer-open {
        transform: translateX(0);
        box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.35);
    }
    
    .sidebar-backdrop.active {
        display: block;
    }
}

/* HEADER ACTION CONTROLS (BORDERLESS, BACKGROUNDLESS, ICON ONLY) */
.header-actions { 
    display: flex; 
    align-items: center; 
    gap: 6px; 
    position: relative; 
    background: transparent;
    border: none;
}

.header-action-btn,
.action-icon-btn,
.header-menu-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-pill);
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    position: relative;
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
    box-shadow: none;
    padding: 0;
}

.header-action-btn i,
.action-icon-btn i,
.header-menu-btn i {
    font-size: 17px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.header-action-btn:hover,
.action-icon-btn:hover,
.header-menu-btn:hover {
    background-color: var(--bg-subtle);
    color: var(--brand-primary);
    transform: scale(1.05);
}

.header-action-btn:hover i,
.action-icon-btn:hover i,
.header-menu-btn:hover i {
    color: var(--brand-primary);
}

.header-action-btn:active,
.action-icon-btn:active,
.header-menu-btn:active {
    transform: scale(0.95);
    background-color: var(--bg-active);
}

.notification-indicator {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--live-red);
    border: 2px solid var(--bg-surface);
}

/* ==========================================================================
   DROPDOWNS & POPOVERS (NOTIFICATIONS)
   ========================================================================== */
#notif-toggle {
    display: none;
}

.notification-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 320px;
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 35px -8px rgba(15, 23, 42, 0.15), 0 0 0 1px rgba(15, 23, 42, 0.04);
    z-index: 1050;
    display: none;
    flex-direction: column;
    overflow: hidden;
    animation: dropdownPop 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes dropdownPop {
    from { opacity: 0; transform: translateY(-8px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

#notif-toggle:checked ~ .notification-dropdown {
    display: flex;
}

/* Notification Dropdown Custom */
.dropdown-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-subtle);
}

.notification-list {
    max-height: 280px;
    overflow-y: auto;
}

.notif-item {
    display: flex;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-fast);
    text-decoration: none;
    color: inherit;
}

.notif-item:hover {
    background: var(--bg-subtle);
}

.notif-item.unread {
    background: var(--brand-light);
}

.notif-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-pill);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.notif-icon.bg-live { background: #ef4444; }
.notif-icon.bg-brand { background: var(--brand-primary); }

.notif-content {
    flex: 1;
    min-width: 0;
}

.notif-title {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.35;
    margin-bottom: 2px;
}

.notif-time {
    font-size: 11px;
    color: var(--text-muted);
}

.dropdown-footer {
    padding: 10px 16px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    background: var(--bg-surface);
}

.view-all-link {
    font-size: 12px;
    font-weight: 700;
    color: var(--brand-primary);
    text-decoration: none;
}

.view-all-link:hover {
    text-decoration: underline;
}

/* User Menu Dropdown Custom */
.dropdown-user-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, rgba(67, 56, 202, 0.08) 0%, rgba(99, 102, 241, 0.04) 100%);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dropdown-user-header strong {
    font-size: 14px;
    color: var(--text-main);
}

.user-role-badge {
    font-size: 11px;
    font-weight: 600;
    color: var(--brand-primary);
}

.dropdown-menu-list {
    padding: 8px 6px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.menu-link:hover {
    background: var(--bg-subtle);
    color: var(--text-main);
}

/* ==========================================================================
   MOBILE BOTTOM NAVIGATION DOCK
   ========================================================================== */
.mobile-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background-color: var(--bg-surface-translucent);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--border-color);
    z-index: 900;
    padding: 0 4px;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -4px 16px rgba(15, 23, 42, 0.05);
}

@media (min-width: 1024px) { 
    .mobile-bottom-nav { display: none !important; } 
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    flex: 1;
    height: 100%;
    color: var(--text-muted);
    font-size: 10.5px;
    font-weight: 600;
    transition: all var(--transition-fast);
    text-decoration: none;
    position: relative;
}

.mobile-nav-item i {
    font-size: 17px;
    transition: transform var(--transition-fast);
}

.mobile-nav-item:hover, .mobile-nav-item.active {
    color: var(--brand-primary);
}

.mobile-nav-item.active i {
    transform: translateY(-2px);
    color: var(--brand-primary);
}

.mobile-nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 4px;
    width: 16px;
    height: 3px;
    background: var(--brand-primary);
    border-radius: var(--radius-pill);
}

/* ==========================================================================
   5. PAGE VIEWS SYSTEM & SECTIONS
   ========================================================================== */
.page-view {
    padding-top: 8px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   PERFECTLY RESPONSIVE SECTION HEADERS
   ========================================================================== */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 32px;
    margin-bottom: 18px;
    position: relative;
    width: 100%;
}

.section-header:first-of-type {
    margin-top: 8px;
}

.section-title-group {
    display: flex;
    flex-direction: column;
    gap: 3px;
    flex: 1;
    min-width: 0;
}

.section-title {
    font-size: 16px;
    font-weight: 800;
    letter-spacing: -0.3px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
    line-height: 1.25;
    margin: 0;
}

.section-title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 16px;
    border-radius: 4px;
    background: linear-gradient(135deg, var(--brand-primary) 0%, #818cf8 100%);
    flex-shrink: 0;
}

.section-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
    margin: 0;
    padding-left: 12px;
}

.section-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    background: var(--brand-light);
    color: var(--brand-primary);
    border: 1px solid rgba(67, 56, 202, 0.14);
    font-size: 12px;
    font-weight: 700;
    text-decoration: none;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    white-space: nowrap;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.section-link svg,
.section-link i {
    font-size: 11px;
    width: 12px;
    height: 12px;
    transition: transform var(--transition-fast);
}

.section-link:hover {
    background: var(--brand-primary);
    color: #ffffff;
    border-color: var(--brand-primary);
    box-shadow: 0 4px 12px rgba(67, 56, 202, 0.22);
    transform: translateY(-1px);
}

.section-link:hover svg,
.section-link:hover i {
    transform: translateX(2px);
    color: #ffffff;
}

.section-link:active {
    transform: translateY(0);
}

/* Tablet Breakpoint (>= 640px) */
@media (min-width: 640px) {
    .section-header {
        margin-top: 36px;
        margin-bottom: 20px;
        gap: 16px;
    }

    .section-title {
        font-size: 18px;
        letter-spacing: -0.4px;
    }

    .section-title::before {
        height: 18px;
        width: 4.5px;
    }

    .section-subtitle {
        font-size: 12.5px;
        padding-left: 13px;
    }

    .section-link {
        font-size: 13px;
        padding: 6px 14px;
    }
}

/* Desktop Breakpoint (>= 1024px) */
@media (min-width: 1024px) {
    .section-header {
        margin-top: 40px;
        margin-bottom: 22px;
    }

    .section-title {
        font-size: 19px;
    }

    .section-title::before {
        height: 20px;
        width: 5px;
    }

    .section-subtitle {
        font-size: 13px;
        padding-left: 14px;
    }
}

/* Very Small Mobile (< 360px) */
@media (max-width: 359px) {
    .section-header {
        flex-wrap: wrap;
        gap: 8px;
    }

    .section-link {
        align-self: flex-start;
        margin-left: 12px;
    }
}

/* HERO CARD — MODERN & RESPONSIVE FOR ALL BREAKPOINTS (< 400px OPTIMIZED) */
.new-update-card {
    background: radial-gradient(120% 120% at 100% 0%, rgba(99, 102, 241, 0.35) 0%, rgba(30, 27, 75, 0.1) 70%), linear-gradient(135deg, #0F172A 0%, #1E1B4B 50%, #312E81 100%);
    color: var(--text-white);
    border-radius: var(--radius-xl);
    padding: 16px 16px 18px 16px;
    position: relative;
    overflow: hidden;
    margin-bottom: 28px;
    box-shadow: 0 16px 36px -8px rgba(30, 27, 75, 0.4);
    border: 1px solid rgba(199, 210, 254, 0.18);
}

@media (min-width: 480px) {
    .new-update-card { padding: 24px 26px; }
}

@media (min-width: 768px) {
    .new-update-card { padding: 32px; display: flex; align-items: center; justify-content: space-between; }
}

.update-content { position: relative; z-index: 2; max-width: 640px; width: 100%; }

.update-tag-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.update-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.25);
    border: 1px solid rgba(165, 180, 252, 0.3);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-pill);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #E0E7FF;
    text-transform: uppercase;
}

.update-time-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-pill);
    font-size: 11px;
    font-weight: 600;
    color: #C7D2FE;
}

.update-title {
    font-size: clamp(17px, 4.5vw, 26px);
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.4px;
    margin-bottom: 12px;
    color: #FFFFFF;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    word-break: break-word;
}

.update-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 6px 10px;
    font-size: 12px;
    color: #C7D2FE; 
}

.update-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    backdrop-filter: blur(4px);
}

.update-action-wrap {
    margin-top: 6px;
}

.btn-update-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 6px 12px;
    background: linear-gradient(135deg, #4338CA 0%, #3730A3 100%);
    color: #FFFFFF;
    font-size: 13px;
    font-weight: 700;
    border-radius: var(--radius-pill);
    text-decoration: none;
    box-shadow: 0 8px 20px -4px rgba(67, 56, 202, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-update-action:hover {
    transform: translateY(-2px) scale(1.02);
    background: linear-gradient(135deg, #4F46E5 0%, #4338CA 100%);
    box-shadow: 0 12px 28px -4px rgba(99, 102, 241, 0.6);
}

@media (max-width: 480px) {
    .btn-update-action {
        width: 50%;
        padding: 6px 12px;
        font-size: 13px; 
    }
}

.btn-play-icon-glow {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: -2px;
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.btn-update-action:hover .btn-play-icon-glow {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.3);
}

.update-bg-glow {
    position: absolute;
    right: -40px;
    bottom: -40px;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(129, 140, 248, 0.35) 0%, rgba(0, 0, 0, 0) 70%);
    border-radius: 50%;
    pointer-events: none;
}

/* LIVE BANNER */
.live-banner-card {
    background-color: var(--bg-surface);
    border: 1px solid rgba(239, 68, 68, 0.25);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 28px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.live-banner-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background-color: var(--live-red); }

@media (min-width: 768px) {
    .live-banner-card { flex-direction: row; align-items: center; justify-content: space-between; padding: 24px; }
    .live-banner-title{ font-size: 16px; }
}

.live-banner-info { display: flex; flex-direction: column; gap: 6px; }
.live-banner-header { display: flex; align-items: center; gap: 10px; }
.live-banner-title { font-size: 14px; font-weight: 700; color: var(--text-main); }
.live-banner-desc { font-size: 12px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }

/* CARD GRID SYSTEM */
.card-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 32px; }
@media (min-width: 640px) { .card-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; } }
@media (min-width: 1024px) { .card-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1280px) { .card-grid { grid-template-columns: repeat(4, 1fr); } }

/* MODERN HIGH-END CLASS CARD & PLAY BUTTON SYSTEM */
.class-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

.class-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 28px -6px rgba(15, 23, 42, 0.12);
    border-color: var(--border-hover);
}

.card-thumbnail {
    position: relative;
    width: 100%;
    height: 160px;
    background-color: var(--bg-subtle);
    overflow: hidden;
}

.card-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.class-card:hover .card-thumbnail img {
    transform: scale(1.06);
}

/* THUMBNAIL PLAY OVERLAY */
.thumbnail-play-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.3);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.25s ease;
    z-index: 3;
}

.class-card:hover .thumbnail-play-overlay {
    opacity: 1;
}

.play-icon-circle {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: #FFFFFF;
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    transform: scale(0.85);
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.class-card:hover .play-icon-circle {
    transform: scale(1);
}

.play-icon-circle svg {
    margin-left: 2px;
}

/* Touchscreen / Mobile permanent play indicator */
@media (max-width: 767px) {
    .thumbnail-play-overlay {
        opacity: 1;
        background: transparent;
        backdrop-filter: none;
        pointer-events: none;
    }
    .play-icon-circle {
        width: 38px;
        height: 38px;
        transform: scale(1);
        background: rgba(255, 255, 255, 0.92);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    }
}

.thumbnail-badge { position: absolute; top: 10px; left: 10px; z-index: 4; }
.thumbnail-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(15, 23, 42, 0.82);
    backdrop-filter: blur(4px);
    color: #FFFFFF;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: var(--radius-xs);
    z-index: 4;
}

.card-body { padding: 16px; display: flex; flex-direction: column; flex: 1; }
@media (max-width: 400px) {
    .card-body { padding: 14px 12px; }
}

.card-subject { font-size: 11px; font-weight: 800; color: var(--brand-primary); text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 4px; }
.card-title { font-size: 15px; font-weight: 700; color: var(--text-main); line-height: 1.35; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.card-teacher { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-secondary); margin-bottom: 12px; margin-top: auto; }
.teacher-avatar-sm { width: 22px; height: 22px; border-radius: 50%; background: #E2E8F0; display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 700; color: var(--text-main); }

/* SMART CARD META TOP */
.card-meta-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 6px;
}

.card-time-tag {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* FACEBOOK-STYLE SMART CARD FOOTER SYSTEM */
.card-footer {
    padding: 6px 8px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-surface);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    position: relative;
}
.short-card-footer{
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.fb-footer-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 6px;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
    text-decoration: none;
    width: 100%;
}

.fb-footer-btn:hover {
    background: var(--bg-subtle);
    color: var(--text-main);
}

.fb-footer-btn svg {
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.fb-footer-btn:hover svg {
    transform: scale(1.1);
}

/* REACT CONTAINER & POPUP */
.card-react-container {
    position: relative;
    width: 100%;
}

.reaction-popup {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 4px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 25px -4px rgba(15, 23, 42, 0.2);
    border-radius: var(--radius-pill);
    padding: 6px 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px) scale(0.92);
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 20;
}

.reaction-popup.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}

.reaction-option {
    font-size: 20px;
    cursor: pointer;
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.reaction-option:hover {
    transform: scale(1.4) translateY(-4px);
}

.btn-react.reacted {
    color: var(--brand-primary);
    font-weight: 700;
}

.btn-react.bounce {
    animation: reactBounce 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes reactBounce {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.react-emoji-active {
    font-size: 15px;
    line-height: 1;
}

/* COMMENT BUTTON ACTIVE STATE */
.btn-comment-toggle.active {
    color: var(--brand-primary);
    background: rgba(67, 56, 202, 0.08);
}

/* SAVE BUTTON SAVED STATE */
.btn-save-card.saved {
    color: #F59E0B;
}

.btn-save-card.saved svg {
    fill: #F59E0B;
    stroke: #F59E0B;
}

/* REAL COMMENT EXPANDABLE SECTION */
.card-comments-section {
    display: none;
    padding: 12px 14px;
    background: var(--bg-subtle);
    border-top: 1px solid var(--border-color);
    animation: fadeInDown 0.25s ease-out forwards;
}

.card-comments-section.open {
    display: block;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 180px;
    overflow-y: auto;
    padding-right: 4px;
    margin-bottom: 10px;
}

.comments-list::-webkit-scrollbar {
    width: 4px;
}
.comments-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.comment-item {
    display: flex;
    gap: 8px;
    font-size: 12px;
}

.comment-avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: #E2E8F0;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    flex-shrink: 0;
}

.comment-content-wrap {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px 12px;
    flex: 1;
}

.comment-author-name {
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 2px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.comment-time {
    font-weight: 500;
    font-size: 10px;
    color: var(--text-muted);
}

.comment-text {
    color: var(--text-secondary);
    line-height: 1.35;
}

/* COMMENT INPUT FORM */
.comment-input-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
}

.comment-input {
    flex: 1;
    height: 34px;
    padding: 0 14px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-main);
    font-size: 12px;
    outline: none;
    transition: border-color 0.2s ease;
}

.comment-input:focus {
    border-color: var(--brand-primary);
}

.btn-send-comment {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--brand-primary);
    color: #FFFFFF;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.btn-send-comment:hover {
    transform: scale(1.08);
}

/* SIKKHALAY TOAST */
.sikkhalay-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: #0F172A;
    color: #FFFFFF;
    padding: 10px 18px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.sikkhalay-toast.show {
    opacity: 1;
    transform: translateY(0);
}

.btn-play-trigger {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--brand-light);
    color: var(--brand-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(67, 56, 202, 0.15);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    flex-shrink: 0;
}

.btn-play-trigger svg {
    margin-left: 2px;
}

.btn-play-trigger:hover {
    background: var(--brand-primary);
    color: #FFFFFF;
    border-color: var(--brand-primary);
    transform: scale(1.1);
    box-shadow: 0 4px 12px var(--brand-glow);
}

.btn-play-trigger.live {
    width: auto;
    padding: 0 12px;
    height: 34px;
    border-radius: var(--radius-pill);
    background: var(--live-red-light);
    color: var(--live-red);
    border-color: rgba(239, 68, 68, 0.25);
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.btn-play-trigger.live:hover {
    background: var(--live-red);
    color: #FFFFFF;
    border-color: var(--live-red);
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35);
}

.horizontal-scroll-container { display: flex; gap: 16px; overflow-x: auto; padding-bottom: 12px; margin-bottom: 24px; scrollbar-width: thin; }
.horizontal-scroll-container .class-card { min-width: 260px; max-width: 280px; flex-shrink: 0; }
@media (max-width: 400px) {
    .horizontal-scroll-container .class-card { min-width: 240px; max-width: 250px; }
}
@media (min-width: 768px) { .horizontal-scroll-container .class-card { min-width: 300px; } }

/* SEARCH & FILTER BAR */
.filter-wrapper {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

@media (min-width: 768px) { .filter-wrapper { flex-direction: row; align-items: center; justify-content: space-between; } }

.search-input-box { position: relative; flex: 1; max-width: 480px; }
.search-input-box svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); width: 18px; height: 18px; }

.search-input {
    width: 100%;
    padding: 10px 14px 10px 42px;
    background-color: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.search-input:focus { background-color: var(--bg-surface); border-color: var(--brand-primary); box-shadow: 0 0 0 3px var(--brand-glow); }

.filter-tags { display: flex; align-items: center; gap: 8px; overflow-x: auto; padding-bottom: 4px; }
.filter-chip { padding: 6px 14px; border-radius: var(--radius-pill); background-color: var(--bg-subtle); color: var(--text-secondary); font-size: 13px; font-weight: 600; cursor: pointer; white-space: nowrap; transition: all var(--transition-fast); }
.filter-chip:hover { color: var(--text-main); background-color: var(--border-color); }
.filter-chip.active { background-color: var(--brand-primary); color: var(--text-white); }

/* /* CREATIVE RESPONSIVE SCHOOL HERO & PROFILE BAR (MOBILE TO LAPTOP/WIDESCREEN) */
.school-hero {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 28px;
    box-shadow: var(--shadow-sm);
}

.school-cover {
    height: 140px;
    background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
    position: relative;
}

@media (min-width: 640px) {
    .school-cover { height: 190px; }
}

@media (min-width: 1024px) {
    .school-cover { height: 250px; }
}

@media (min-width: 1280px) {
    .school-cover { height: 280px; }
}

.school-cover-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.55;
}

.school-cover-badge {
    position: absolute;
    top: 14px;
    right: 14px;
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow-sm);
    z-index: 2;
    font-size: 11px;
    padding: 4px 10px;
}

@media (min-width: 768px) {
    .school-cover-badge {
        font-size: 12px;
        padding: 6px 14px;
        top: 16px;
        right: 16px;
    }
}

.school-profile-bar {
    padding: 0 16px 20px 16px;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: -42px;
    z-index: 10;
}

@media (min-width: 640px) {
    .school-profile-bar {
        padding: 0 24px 24px 24px;
        margin-top: -48px;
        gap: 18px;
    }
}

@media (min-width: 1024px) {
    .school-profile-bar {
        flex-direction: row;
        align-items: flex-end;
        justify-content: space-between;
        padding: 0 32px 28px 32px;
        margin-top: -56px;
        gap: 24px;
    }
}

@media (min-width: 1280px) {
    .school-profile-bar {
        padding: 0 40px 32px 40px;
        margin-top: -64px;
    }
}

.school-identity {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    width: 100%;
}

@media (min-width: 640px) {
    .school-identity {
        flex-direction: row;
        align-items: flex-end;
        gap: 16px;
    }
}

@media (min-width: 1024px) {
    .school-identity {
        gap: 20px;
        flex: 1;
        min-width: 0;
    }
}

.school-avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #FFFFFF 0%, #EEF2FF 100%);
    border: 4px solid var(--bg-surface);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    font-weight: 800;
    color: var(--brand-primary);
    flex-shrink: 0;
}

@media (min-width: 640px) {
    .school-avatar {
        width: 92px;
        height: 92px;
        font-size: 30px;
    }
}

@media (min-width: 1024px) {
    .school-avatar {
        width: 108px;
        height: 108px;
        font-size: 36px;
        border-width: 5px;
    }
}

.school-details {
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 100%;
    min-width: 0;
}

.school-name {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.25;
    word-break: break-word;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}

@media (min-width: 640px) {
    .school-name { font-size: 21px; }
}

@media (min-width: 1024px) {
    .school-name { font-size: 25px; }
}

@media (min-width: 1280px) {
    .school-name { font-size: 27px; }
}

.school-address {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.45;
    display: flex;
    align-items: flex-start;
    gap: 6px;
    word-break: break-word;
}

.school-address svg {
    flex-shrink: 0;
    margin-top: 2px;
}

@media (min-width: 640px) {
    .school-address {
        font-size: 13px;
        align-items: center;
    }
    .school-address svg { margin-top: 0; }
}

.school-profile-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

@media (min-width: 640px) {
    .school-profile-actions {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

@media (min-width: 1024px) {
    .school-profile-actions {
        width: auto;
        flex-direction: row;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
        justify-content: flex-end;
    }
}

.school-fee-btn {
    width: 100%;
    justify-content: center;
}

@media (min-width: 640px) {
    .school-fee-btn {
        width: auto;
    }
}

.school-badge-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 28px; }
@media (min-width: 768px) { .stats-grid { grid-template-columns: repeat(4, 1fr); gap: 16px; } }
@media (min-width: 1280px) { .stats-grid { gap: 20px; } }

.stat-card { background-color: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 18px; display: flex; flex-direction: column; gap: 4px; transition: transform var(--transition-fast); }
.stat-card:hover { transform: translateY(-2px); border-color: var(--border-hover); }
.stat-value { font-size: 24px; font-weight: 800; color: var(--brand-primary); letter-spacing: -0.5px; }
@media (min-width: 1024px) { .stat-value { font-size: 28px; } }
.stat-label { font-size: 12px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; }

.notice-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; }
.notice-item { background-color: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; transition: border-color var(--transition-fast); }
.notice-item:hover { border-color: var(--brand-primary); }
.notice-date { font-size: 11px; font-weight: 700; color: var(--brand-primary); letter-spacing: 0.5px; }
.notice-title { font-size: 15px; font-weight: 700; color: var(--text-main); margin-top: 2px; }

.gallery-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 32px; }
@media (min-width: 640px) { .gallery-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; } }
@media (min-width: 1024px) { .gallery-grid { grid-template-columns: repeat(6, 1fr); gap: 16px; } }
.gallery-item { height: 140px; border-radius: var(--radius-md); overflow: hidden; cursor: pointer; display: block; }
@media (min-width: 1024px) { .gallery-item { height: 150px; } }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.gallery-item:hover img { transform: scale(1.08); }


/* EXAM CARD */
.exam-card { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 20px; display: flex; flex-direction: column; gap: 16px; }
.exam-meta-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; background-color: var(--bg-subtle); padding: 12px; border-radius: var(--radius-sm); text-align: center; }
.exam-meta-val { font-size: 14px; font-weight: 700; color: var(--text-main); }
.exam-meta-lbl { font-size: 11px; color: var(--text-muted); }

/* PROFILE COMPONENT */
.profile-hero-card { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 24px; display: flex; flex-direction: column; gap: 20px; }
@media (min-width: 768px) { .profile-hero-card { flex-direction: row; align-items: center; justify-content: space-between; padding: 32px; } }
.profile-user-group { display: flex; align-items: center; gap: 20px; }
.profile-avatar-lg { width: 80px; height: 80px; border-radius: 50%; background: linear-gradient(135deg, #EEF2FF 0%, #C7D2FE 100%); display: flex; align-items: center; justify-content: center; font-size: 28px; font-weight: 800; color: var(--brand-primary); border: 3px solid var(--brand-light); }
.profile-name { font-size: 24px; font-weight: 800; color: var(--text-main); }
.profile-id-tag { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }

.info-card { background-color: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 20px; margin-bottom: 20px; }
.info-card-header { font-size: 16px; font-weight: 700; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 1px solid var(--border-color); display: flex; align-items: center; gap: 8px; }
.info-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 640px) { .info-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .info-grid { grid-template-columns: repeat(3, 1fr); } }

.info-item { display: flex; flex-direction: column; gap: 2px; }
.info-label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; }
.info-value { font-size: 14px; font-weight: 600; color: var(--text-main); }

.progress-item { margin-bottom: 14px; }
.progress-header { display: flex; justify-content: space-between; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.progress-track { height: 8px; background-color: var(--bg-subtle); border-radius: var(--radius-pill); overflow: hidden; }
.progress-fill { height: 100%; background-color: var(--brand-primary); border-radius: var(--radius-pill); transition: width 0.8s ease; }

/* ==========================================================================
   6. PURE CSS MODALS & LIGHTBOX (USING :target PSEUDO-CLASS)
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.modal-overlay:target {
    display: flex;
    animation: fadeIn 0.2s ease;
}

.modal-card {
    background-color: var(--bg-surface);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.modal-header { padding: 18px 24px; border-bottom: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border-color); display: flex; align-items: center; justify-content: flex-end; gap: 12px; background-color: var(--bg-subtle); }
.lightbox-img { max-width: 100%; max-height: 80vh; border-radius: var(--radius-md); object-fit: contain; }

/* COACHING CENTER & ADMISSION CARDS */
.coaching-card {
    min-width: 290px;
    max-width: 320px;
    flex-shrink: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-normal);
    position: relative;
}

.coaching-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--brand-primary);
}

.coaching-cover {
    position: relative;
    width: 100%;
    height: 140px;
    background-color: var(--bg-subtle);
    overflow: hidden;
}

.coaching-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.coaching-card:hover .coaching-cover img {
    transform: scale(1.06);
}

.coaching-logo-overlay {
    position: absolute;
    bottom: -18px;
    left: 16px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, #4338CA 0%, #2563EB 100%);
    border: 3px solid var(--bg-surface);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: var(--text-white);
    font-size: 14px;
    z-index: 3;
}

.coaching-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
}

.coaching-card-body {
    padding: 24px 16px 16px 16px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.coaching-name {
    font-size: 16px;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.3;
    margin-bottom: 4px;
}

.coaching-location {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 12px;
}

.coaching-courses {
    font-size: 12px;
    font-weight: 600;
    color: var(--brand-primary);
    background-color: var(--brand-light);
    padding: 6px 10px;
    border-radius: var(--radius-xs);
    margin-bottom: 14px;
    display: inline-block;
}

/* SCHOOL PAGE UPGRADES (FACULTY, PRINCIPAL, STREAMS) */
.principal-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 28px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
    .principal-card {
        flex-direction: row;
        align-items: center;
        padding: 32px;
    }
}

.principal-avatar {
    width: 110px;
    height: 110px;
    border-radius: var(--radius-md);
    object-fit: cover;
    border: 3px solid var(--brand-light);
    flex-shrink: 0;
}

.principal-quote {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    font-style: italic;
    margin-top: 6px;
}

.faculty-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 32px;
}

@media (min-width: 640px) {
    .faculty-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .faculty-grid { grid-template-columns: repeat(3, 1fr); }
}

.faculty-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: all var(--transition-fast);
}

.faculty-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--brand-primary);
}

.faculty-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--brand-light);
    flex-shrink: 0;
}

.faculty-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.faculty-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
}

.faculty-role {
    font-size: 12px;
    font-weight: 600;
    color: var(--brand-primary);
}

.faculty-degree {
    font-size: 11px;
    color: var(--text-secondary);
}

.stream-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.stream-title {
    font-size: 16px;
    font-weight: 800;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.facility-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.facility-img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.facility-body {
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.facility-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-main);
}

.facility-desc {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ADVANCED FUTURISTIC UI COMPONENTS FOR SCHOOL PAGE */
.board-success-card {
    background: linear-gradient(135deg, #FFFBEB 0%, #FFFFFF 60%, #EEF2FF 100%);
    border: 1px solid rgba(217, 119, 6, 0.3);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 28px;
    box-shadow: 0 10px 25px -5px rgba(217, 119, 6, 0.12);
    position: relative;
    overflow: hidden;
}

.board-success-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #D97706 0%, #4338CA 50%, #10B981 100%);
}

.board-stat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

@media (min-width: 768px) {
    .board-stat-grid { grid-template-columns: repeat(4, 1fr); }
}

.board-stat-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    text-align: center;
}

.board-stat-num {
    font-size: 22px;
    font-weight: 800;
    color: var(--brand-primary);
}

.board-stat-lbl {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.club-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: all var(--transition-normal);
}

.club-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--brand-primary);
}

.club-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--brand-light);
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
}

.shift-timeline {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 28px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 768px) {
    .shift-timeline { grid-template-columns: repeat(2, 1fr); }
}

.shift-card {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ebook-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 32px;
}

@media (min-width: 768px) {
    .ebook-grid { grid-template-columns: repeat(4, 1fr); }
}

.ebook-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: all var(--transition-fast);
}

.ebook-card:hover {
    border-color: var(--brand-primary);
    box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   CORPORATE EDUCATIONAL PLATFORM FOOTER (NEXT-GEN EDTECH)
   ========================================================================== */
.app-footer {
    margin-top: 56px;
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 13px;
    width: 100%;
    position: relative;
    box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.02);
}

/* 1. Pre-Footer Hotline & Trust Strip */
.footer-top-strip {
    background: linear-gradient(135deg, rgba(67, 56, 202, 0.04) 0%, rgba(99, 102, 241, 0.02) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
}

.footer-top-inner {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
}

@media (min-width: 768px) {
    .footer-top-inner {
        flex-direction: row;
    }
}

.footer-hotline-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
}

.footer-hotline-item i {
    color: var(--brand-primary);
    font-size: 15px;
}

.footer-hotline-link {
    color: var(--brand-primary);
    text-decoration: none;
    font-weight: 700;
}

.footer-hotline-link:hover {
    text-decoration: underline;
}

.footer-trust-pills {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.footer-trust-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.2px;
}

.footer-trust-pill i {
    color: #059669;
    font-size: 12px;
}

/* 2. Main Multi-Column Links Grid */
.footer-main-section {
    padding: 44px 0 32px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px 20px;
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1.4fr repeat(4, 1fr);
        gap: 28px;
    }
}

/* Brand Column */
.footer-brand-col {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-brand-header {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.footer-brand-logo {
    width: 38px;
    height: 38px;
    background: #4338CA url('../../assets/images/logo.jpeg') no-repeat center/cover;
    border-radius: var(--radius-pill);
    border: 1.5px solid rgba(67, 56, 202, 0.2);
    box-shadow: 0 2px 8px rgba(67, 56, 202, 0.15);
    flex-shrink: 0;
}

.footer-tagline {
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 320px;
}

.footer-social-links {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
}

.footer-social-btn {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-pill);
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.footer-social-btn:hover {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(67, 56, 202, 0.25);
}

/* Links Columns */
.footer-col {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col-title {
    font-size: 12px;
    font-weight: 800;
    color: var(--text-main);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-col-title i {
    color: var(--brand-primary);
    font-size: 13px;
}

.footer-link-list {
    display: flex;
    flex-direction: column;
    gap: 7px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-link {
    font-size: 12.5px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    width: fit-content;
}

.footer-link:hover {
    color: var(--brand-primary);
    transform: translateX(3px);
}

.footer-link .link-badge {
    font-size: 9.5px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: var(--radius-pill);
    background: rgba(239, 68, 68, 0.12);
    color: #ef4444;
}

.footer-link .link-badge-new {
    background: rgba(139, 92, 246, 0.14);
    color: #8b5cf6;
}

/* 3. Bottom Legal, Status & Localization Bar */
.footer-bottom-bar {
    border-top: 1px solid var(--border-color);
    padding: 18px 0;
    background: var(--bg-subtle);
    font-size: 12px;
}

.footer-bottom-inner {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    text-align: center;
}

@media (min-width: 768px) {
    .footer-bottom-inner {
        flex-direction: row;
        text-align: left;
    }
}

.footer-copyright {
    color: var(--text-muted);
    font-weight: 500;
}

.footer-status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    color: #059669;
    background: rgba(5, 150, 105, 0.1);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(5, 150, 105, 0.2);
}

.status-pulse-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 6px #10b981;
}

.footer-lang-selector {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* AI TEACHER HEADER BUTTON & PAGE STYLES */
.ai-teacher-btn {
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    color: #4338CA;
    border: 1px solid rgba(99, 102, 241, 0.3);
    font-weight: 700;
    transition: all 0.2s ease;
}

.ai-teacher-btn:hover {
    background: linear-gradient(135deg, #4338CA 0%, #3730A3 100%);
    color: #FFFFFF;
    border-color: #3730A3;
    box-shadow: 0 4px 14px rgba(67, 56, 202, 0.25);
}

.ai-hero-card {
    background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 50%, #312E81 100%);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    color: #FFFFFF;
    margin-bottom: 28px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 30px -10px rgba(49, 46, 129, 0.3);
}

@media (min-width: 768px) {
    .ai-hero-card { padding: 40px; }
}

.ai-hero-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.35) 0%, rgba(0, 0, 0, 0) 70%);
    pointer-events: none;
}

.ai-chat-box {
    width: 100vw;
    max-width: var(--max-width);
    margin: 0 auto;
    margin-left: -16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 18px 8px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-sm);
}

.ai-msg {
    display: flex;
    gap: 0px;
    margin-bottom: 15px;
}

.ai-avatar-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-pill);
    background: linear-gradient(135deg, #6366F1 0%, #4338CA 100%);
    color: #FFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.user-avatar-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-pill);
    background: var(--brand-primary);
    color: #FFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    flex-shrink: 0;
}

.chat-bubble {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-main); 
}

.ai-bubble {
    background: linear-gradient(135deg, #F8FAFC 0%, #EEF2FF 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.ai-formula-block {
    background: #0F172A;
    color: #38BDF8;
    font-family: monospace;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin: 12px 0;
    font-size: 13px;
}

.ai-tutor-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

@media (min-width: 640px) {
    .ai-tutor-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .ai-tutor-grid { grid-template-columns: repeat(4, 1fr); }
}

.tutor-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: all var(--transition-fast);
}

.tutor-card:hover {
    border-color: #6366F1;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.tutor-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    background: #EEF2FF;
}

.prompt-pill-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.prompt-pill {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
}

.prompt-pill:hover {
    border-color: #6366F1;
    color: #4338CA;
    background: #EEF2FF;
}

/* ==========================================================================
   CAMPUS AUTO-SWIPING PHOTO CAROUSEL (FULL BLEED 100VW)
   ========================================================================== */
.campus-swiper-wrapper {
    width: 100vw;
    max-width: var(--max-width);
    position: relative;   
    margin : 0 auto;
    overflow: hidden;
    background-color: #0F172A;
}

.campus-swiper-container {
    position: relative;
    width: 100%;
    height: 160px;
    overflow: hidden;
}

@media (min-width: 768px) {
    .campus-swiper-container { height: 220px; }
}

.campus-swiper-track {
    display: flex;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
    will-change: transform;
}

.campus-slide {
    min-width: 100%;
    height: 100%;
    position: relative;
    flex-shrink: 0;
}

.campus-slide-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.campus-slide-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.15) 0%, rgba(15, 23, 42, 0.85) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px 32px;
    color: #FFFFFF;
}

.campus-slide-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    background: rgba(67, 56, 202, 0.9);
    color: #FFFFFF;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    width: fit-content;
}

.campus-slide-title {
    font-size: 22px;
    font-weight: 800;
    color: #FFFFFF;
    line-height: 1.2;
    margin-bottom: 4px;
}

@media (min-width: 768px) {
    .campus-slide-title { font-size: 28px; }
}

.campus-slide-subtitle {
    font-size: 13px;
    color: #CBD5E1;
}

.campus-swiper-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.2s ease;
}

.campus-swiper-btn:hover {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
}

.prev-btn { left: 16px; }
.next-btn { right: 16px; }

.campus-swiper-dots {
    position: absolute;
    bottom: 16px;
    right: 32px;
    display: flex;
    gap: 8px;
    z-index: 10;
}

.campus-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
}

.campus-dot.active {
    width: 28px;
    border-radius: 6px;
    background: #FFFFFF;
}

/* GREETING CARD HERO SCHOOL (FULL BLEED 100VW) */
.greeting-card-school {
    width: 100vw;
    max-width: var(--max-width);
    position: relative;
    margin: 0 auto;
    margin-top: 0px;
    margin-bottom: 28px;
    padding: 4px 8px; 
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.2) 0%, rgba(15, 23, 42, 0.05) 100%);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 10;
}

/* ROUTINE TABS & TABLE */
.routine-tab-group {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
    margin-bottom: 16px;
}

.routine-tab {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s ease;
}

.routine-tab.active, .routine-tab:hover {
    background: var(--brand-primary);
    color: #FFFFFF;
    border-color: var(--brand-primary);
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
}

.custom-table th {
    background: var(--bg-subtle);
    color: var(--text-main);
    font-weight: 700;
    padding: 12px 16px;
    border-bottom: 2px solid var(--border-color);
}

.custom-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

/* EBOOK & NOTICE FILTERS */
.ebook-filter-bar, .notice-filter-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.ebook-filter-chip, .notice-filter-chip, .doc-filter-chip {
    padding: 6px 14px;
    border-radius: 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.ebook-filter-chip.active, .notice-filter-chip.active, .doc-filter-chip.active, .ebook-filter-chip:hover, .notice-filter-chip:hover, .doc-filter-chip:hover {
    background: var(--brand-light);
    color: var(--brand-primary);
    border-color: var(--brand-primary);
}

/* ==========================================================================
   MENU TRIGGER BUTTON & SLIDE-OVER DRAWER SECTION
   ========================================================================== */
.menu-btn-trigger {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    box-shadow: none;
    flex-shrink: 0;
}

.menu-btn-trigger:hover {
    border-color: var(--brand-primary);
    color: var(--brand-primary);
    background-color: var(--brand-light);
    transform: none;
    box-shadow: none;
}

.menu-drawer-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    z-index: 999999;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    justify-content: flex-end;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.menu-drawer-panel {
    width: 100vw;
    max-width: 380px;
    height: 100%;
    height: 100dvh;
    background: var(--bg-surface);
    box-shadow: -8px 0 25px rgba(15, 23, 42, 0.25);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

@media (max-width: 480px) {
    .menu-drawer-panel {
        max-width: 100vw;
        width: 100vw;
    }
}

.menu-backdrop-close {
    position: absolute;
    inset: 0;
    cursor: pointer;
}

#menu-toggle:checked ~ .menu-drawer-backdrop {
    display: flex;
    opacity: 1;
}

#menu-toggle:checked ~ .menu-drawer-backdrop .menu-drawer-panel {
    transform: translateX(0);
}


.menu-drawer-header {
    padding: 20px;
    background: linear-gradient(135deg, #0F172A 0%, #312E81 100%);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 10;
}

.menu-user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.menu-avatar {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--brand-primary);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 16px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.menu-user-name {
    font-size: 16px;
    font-weight: 800;
    color: #FFFFFF;
    line-height: 1.2;
}

.menu-user-role {
    font-size: 11px;
    color: #A5B4FC;
    margin-top: 2px;
}

.menu-user-school {
    font-size: 10px;
    color: #93C5FD;
}

.menu-close-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    transition: background 0.2s;
}

.menu-close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.menu-drawer-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.menu-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.menu-group-title {
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
}

.menu-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.menu-link:hover {
    background-color: var(--brand-light);
    color: var(--brand-primary);
    transform: translateX(4px);
}

/* ==========================================================================
   AI CHAT BOX - FACEBOOK-STYLE REPLY & REACT SYSTEM
   ========================================================================== */

.ai-msg {
    position: relative;
    display: flex;
    gap: 14px;
    margin-bottom: 24px;
    animation: msgFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes msgFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.chat-bubble-wrapper {
    flex: 1;
    max-width: 880px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* Reactions Badge Row on Top or Bottom of Chat Bubble */
.msg-reactions-display {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 4px;
    min-height: 24px;
}

.reaction-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08);
    border-radius: 9999px;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-main, #0F172A);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    user-select: none;
}

.reaction-badge:hover {
    transform: scale(1.08);
    border-color: var(--brand-primary, #4338CA);
    box-shadow: 0 3px 8px rgba(67, 56, 202, 0.15);
}

.reaction-badge.active {
    background: #EEF2FF;
    border-color: #818CF8;
    color: #3730A3;
}

/* Actions Toolbar (Like/React, Reply, Share) */
.msg-action-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 4px;
    padding-left: 2px;
    position: relative;
}

.msg-action-btn-wrapper {
    position: relative;
    display: inline-block;
}

.msg-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: none;
    font-family: inherit;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted, #64748B);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.15s ease;
    user-select: none;
}

.msg-action-btn:hover {
    background: var(--bg-subtle, #F1F5F9);
    color: var(--brand-primary, #4338CA);
}

.msg-action-btn.active-react {
    color: #4338CA;
}

/* Facebook-style Reaction Popover Bar */
.facebook-reaction-popover {
    position: absolute;
    bottom: 100%;
    left: 0;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 9999px;
    padding: 6px 12px;
    box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.15), 0 8px 10px -6px rgba(15, 23, 42, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px) scale(0.9);
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 100;
}

.msg-action-btn-wrapper:hover .facebook-reaction-popover,
.facebook-reaction-popover.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.reaction-emoji-btn {
    background: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
    padding: 4px;
    border-radius: 50%;
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.2s ease;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.reaction-emoji-btn:hover {
    transform: scale(1.4) translateY(-6px);
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.15));
}

.reaction-emoji-btn::after {
    content: attr(data-label);
    position: absolute;
    top: -26px;
    background: #0F172A;
    color: #FFF;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

.reaction-emoji-btn:hover::after {
    opacity: 1;
}

/* Inline Facebook-style Reply Box */
.inline-reply-box {
    margin-top: 10px;
    background: #FFFFFF;
    border: 1.5px solid var(--border-color, #E2E8F0);
    border-radius: 14px;
    padding: 12px 14px;
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.06);
    display: none;
    flex-direction: column;
    gap: 10px;
    animation: replyBoxSlide 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.inline-reply-box.open {
    display: flex;
}

@keyframes replyBoxSlide {
    from { opacity: 0; transform: translateY(-8px); scale: 0.98; }
    to { opacity: 1; transform: translateY(0); scale: 1; }
}

.reply-header-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-secondary, #475569);
    padding-bottom: 6px;
    border-bottom: 1px dashed var(--border-color, #E2E8F0);
}

.reply-input-row {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.reply-avatar-sm {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md, 10px);
    background: var(--brand-primary, #4338CA);
    color: #FFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.reply-textarea {
    flex: 1;
    min-height: 44px;
    max-height: 120px;
    border: none;
    outline: none;
    resize: none;
    background: var(--bg-subtle, #F8FAFC);
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 10px;
    padding: 8px 12px;
    font-family: inherit;
    font-size: 13px;
    color: var(--text-main, #0F172A);
    line-height: 1.5;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.reply-textarea:focus {
    border-color: var(--brand-primary, #4338CA);
    background: #FFFFFF;
    box-shadow: 0 0 0 3px rgba(67, 56, 202, 0.1);
}

.reply-footer-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.reply-quick-tools {
    display: flex;
    align-items: center;
    gap: 6px;
}

.reply-tool-btn {
    background: transparent;
    border: none;
    font-size: 16px;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: background 0.15s ease;
}

.reply-tool-btn:hover {
    background: var(--bg-subtle, #F1F5F9);
}

.reply-btn-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.reply-cancel-btn {
    padding: 5px 12px;
    background: transparent;
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary, #475569);
    cursor: pointer;
    transition: all 0.2s ease;
}

.reply-cancel-btn:hover {
    background: #F1F5F9;
    color: #0F172A;
}

.reply-submit-btn {
    padding: 5px 16px;
    background: var(--brand-primary, #4338CA);
    color: #FFF;
    border: none;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    box-shadow: 0 2px 6px rgba(67, 56, 202, 0.25);
    transition: all 0.2s ease;
}

.reply-submit-btn:hover {
    background: #3730A3;
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(67, 56, 202, 0.35);
}

/* Threaded Sub-Replies Section */
.threaded-replies-list {
    margin-top: 12px;
    margin-left: 20px;
    padding-left: 14px;
    border-left: 2px solid var(--border-color, #E2E8F0);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.threaded-reply-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 12px;
    padding: 10px 14px;
    font-size: 13px;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
    animation: threadedReplyFade 0.25s ease forwards;
}

@keyframes threadedReplyFade {
    from { opacity: 0; transform: translateX(-6px); }
    to { opacity: 1; transform: translateX(0); }
}

.threaded-reply-author {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 4px;
}

.threaded-reply-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 12px;
}

.threaded-reply-time {
    font-size: 11px;
    color: var(--text-muted, #94A3B8);
    font-weight: 500;
}

.threaded-reply-body {
    color: var(--text-main, #0F172A);
    line-height: 1.5;
}

@media (max-width: 640px) {
    .facebook-reaction-popover {
        padding: 4px 8px;
        gap: 4px;
    }
    .reaction-emoji-btn {
        font-size: 20px;
    }
    .threaded-replies-list {
        margin-left: 10px;
        padding-left: 10px;
    }
}

/* AI Features Dropdown Menu in Student Input Card */
.ai-features-trigger-btn:hover {
    background: linear-gradient(135deg, #E0E7FF 0%, #C7D2FE 100%) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(67, 56, 202, 0.15) !important;
}

.ai-features-dropdown-panel {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    width: 290px;
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 16px;
    box-shadow: 0 12px 30px -6px rgba(15, 23, 42, 0.15), 0 4px 12px -2px rgba(15, 23, 42, 0.08);
    padding: 10px;
    z-index: 120;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.95);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.ai-features-dropdown-panel.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.features-dropdown-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 8px 8px 8px;
    font-size: 10px;
    font-weight: 800;
    color: var(--text-muted, #94A3B8);
    letter-spacing: 0.5px;
    border-bottom: 1px dashed var(--border-color, #E2E8F0);
    margin-bottom: 6px;
}

.features-dropdown-header .badge-tag {
    font-size: 9px;
    padding: 2px 6px;
    background: #EEF2FF;
    color: #4338CA;
    border-radius: 9999px;
    font-weight: 700;
}

.features-dropdown-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.feature-item-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 8px 10px;
    border: none;
    background: transparent;
    border-radius: 10px;
    cursor: pointer;
    text-align: left;
    transition: all 0.15s ease;
    font-family: inherit;
}

.feature-item-btn:hover {
    background: var(--bg-subtle, #F8FAFC);
    transform: translateX(3px);
}

.feature-item-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.feature-item-text {
    display: flex;
    flex-direction: column;
}

.feature-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-main, #0F172A);
}

.feature-desc {
    font-size: 10px;
    color: var(--text-secondary, #64748B);
}

/* Chat Tab Horizontal Scroll Navigation */
.chat-tab-nav-container {
    display: flex;
    align-items: center;
    gap: 10px;
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 14px;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
}

.chat-tab-nav-container::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
    width: 0;
    height: 0;
}

.chat-tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: #FFFFFF;
    border: 1.5px solid var(--border-color, #E2E8F0);
    border-radius: 9999px;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary, #475569);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
    user-select: none;
    flex-shrink: 0;
}

.chat-tab-btn:hover {
    background: #F8FAFC;
    border-color: #CBD5E1;
    color: var(--brand-primary, #4338CA);
    transform: translateY(-1px);
}

.chat-tab-btn.active {
    background: var(--brand-primary, #4338CA);
    border-color: var(--brand-primary, #4338CA);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(67, 56, 202, 0.25);
}

.chat-tab-btn .tab-badge {
    font-size: 10px;
    padding: 2px 6px;
    background: #EEF2FF;
    color: #4338CA;
    border-radius: 9999px;
    font-weight: 800;
}

.chat-tab-btn.active .tab-badge {
    background: rgba(255, 255, 255, 0.25);
    color: #FFFFFF;
}

.chat-tab-btn .tab-badge-purple {
    font-size: 10px;
    padding: 2px 6px;
    background: #F3E8FF;
    color: #7E22CE;
    border-radius: 9999px;
    font-weight: 800;
}

.chat-tab-btn.active .tab-badge-purple {
    background: rgba(255, 255, 255, 0.25);
    color: #FFFFFF;
}

/* AI Teacher - Smart Speech Button Styling */
.msg-action-btn.msg-tts-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--gemini-muted-text, #64748B);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

.msg-action-btn.msg-tts-btn:hover {
    background: var(--gemini-border, #E2E8F0);
    color: var(--gemini-canvas-text, #0F172A);
}

.msg-action-btn.msg-tts-btn .tts-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.msg-action-btn.msg-tts-btn.speaking {
    background: rgba(79, 70, 229, 0.12);
    color: #4F46E5;
    font-weight: 700;
    box-shadow: 0 1px 4px rgba(79, 70, 229, 0.2);
    animation: ttsPulse 2s infinite ease-in-out;
}

.msg-action-btn.msg-tts-btn.paused {
    background: #FEF3C7;
    color: #D97706;
    font-weight: 700;
}

.msg-action-btn.msg-tts-btn.paused:hover {
    background: #FDE68A;
    color: #B45309;
}

/* Fallback if attached directly to bubble */
.chat-bubble > .msg-tts-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 8px;
    padding: 4px 10px;
    font-size: 11px;
    background: var(--gemini-surface, #F8FAFC);
    border: 1px solid var(--gemini-border, #E2E8F0);
    border-radius: 12px;
    color: var(--gemini-muted-text, #64748B);
    cursor: pointer;
}

/* Soundwave Equalizer Animation */
.tts-soundwave {
    display: inline-flex;
    align-items: flex-end;
    gap: 2px;
    height: 12px;
}

.tts-soundwave span {
    width: 2px;
    background-color: #FFFFFF;
    border-radius: 1px;
    animation: ttsWave 1s infinite ease-in-out alternate;
}

.tts-soundwave span:nth-child(1) { height: 4px; animation-delay: 0.0s; }
.tts-soundwave span:nth-child(2) { height: 10px; animation-delay: 0.2s; }
.tts-soundwave span:nth-child(3) { height: 6px; animation-delay: 0.4s; }

@keyframes ttsWave {
    0% { height: 3px; }
    100% { height: 12px; }
}

@keyframes ttsPulse {
    0% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.4); }
    70% { box-shadow: 0 0 0 8px rgba(79, 70, 229, 0); }
    100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0); }
}


/* ==========================================================================
   CHATGPT & GOOGLE GEMINI ADVANCED AI APPLICATION DESIGN SYSTEM
   ========================================================================== */
:root {
    --gemini-canvas-bg: #FFFFFF;
    --gemini-canvas-text: #0F172A;
    --gemini-surface: #F8FAFC;
    --gemini-border: #E2E8F0;
    --gemini-header-bg: rgba(255, 255, 255, 0.94);
    --gemini-sidebar-bg: #0F172A;
    --gemini-sidebar-text: #F8FAFC;
    --gemini-sidebar-border: #1E293B;
    --gemini-input-card-bg: #FFFFFF;
    --gemini-input-dock-gradient: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.96) 25%, #FFFFFF 100%);
    --gemini-hero-card-bg: #FFFFFF;
    --gemini-hero-card-hover: #FAFAFE;
    --gemini-user-bubble-bg: #F1F5F9;
    --gemini-ai-bubble-bg: #FFFFFF;
    --gemini-muted-text: #64748B;
}

body.dark-theme {
    --gemini-canvas-bg: #0B0F19;
    --gemini-canvas-text: #F1F5F9;
    --gemini-surface: #111827;
    --gemini-border: #1F2937;
    --gemini-header-bg: rgba(11, 15, 25, 0.94);
    --gemini-sidebar-bg: #070B14;
    --gemini-sidebar-text: #E2E8F0;
    --gemini-sidebar-border: #151E2E;
    --gemini-input-card-bg: #111827;
    --gemini-input-dock-gradient: linear-gradient(180deg, rgba(11, 15, 25, 0) 0%, rgba(11, 15, 25, 0.96) 25%, #0B0F19 100%);
    --gemini-hero-card-bg: #111827;
    --gemini-hero-card-hover: #1A2234;
    --gemini-user-bubble-bg: #1E293B;
    --gemini-ai-bubble-bg: #111827;
    --gemini-muted-text: #94A3B8;
}

.gemini-app-layout {
    display: flex;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background: var(--gemini-canvas-bg);
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gemini-canvas-text);
    transition: background 0.25s ease, color 0.25s ease;
}

/* 1. Left History Sidebar */
.gemini-history-sidebar {
    width: 290px;
    min-width: 290px;
    height: 100vh;
    background: var(--gemini-sidebar-bg);
    color: var(--gemini-sidebar-text);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--gemini-sidebar-border);
    z-index: 100;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), margin-left 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.gemini-history-sidebar.collapsed {
    margin-left: -290px;
}

.gemini-sidebar-header {
    padding: 16px 16px 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.gemini-sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.gemini-spark-badge {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: linear-gradient(135deg, #6366F1 0%, #4338CA 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFF;
    font-size: 14px;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

.gemini-brand-text {
    display: flex;
    flex-direction: column;
}

.gemini-brand-title {
    font-size: 15px;
    font-weight: 800;
    color: #FFFFFF;
    letter-spacing: -0.2px;
}

.gemini-brand-subtitle {
    font-size: 10px;
    font-weight: 600;
    color: #818CF8;
}

.gemini-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.08);
    color: #94A3B8;
    font-size: 11px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.gemini-back-btn:hover {
    background: rgba(255, 255, 255, 0.16);
    color: #FFFFFF;
}

/* + New Chat Button */
.gemini-new-chat-wrapper {
    padding: 12px 16px 8px 16px;
}

.gemini-new-chat-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    border-radius: 9999px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.18) 0%, rgba(67, 56, 202, 0.3) 100%);
    border: 1px solid rgba(99, 102, 241, 0.4);
    color: #FFFFFF;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.gemini-new-chat-btn:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.35) 0%, rgba(67, 56, 202, 0.5) 100%);
    border-color: #818CF8;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

/* Sidebar Search Box */
.gemini-sidebar-search-box {
    padding: 4px 16px 8px 16px;
}

.gemini-sidebar-search-wrapper {
    position: relative;
    width: 100%;
}

.gemini-sidebar-search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 11px;
    color: #64748B;
    pointer-events: none;
}

.gemini-sidebar-search-input {
    width: 100%;
    padding: 7px 10px 7px 28px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: #F8FAFC;
    font-size: 12px;
    outline: none;
    transition: all 0.2s ease;
}

.gemini-sidebar-search-input::placeholder {
    color: #64748B;
}

.gemini-sidebar-search-input:focus {
    background: rgba(255, 255, 255, 0.09);
    border-color: #818CF8;
}

/* Category Tab Switcher inside Sidebar */
.gemini-sidebar-tabs {
    display: flex;
    padding: 4px 16px 8px 16px;
    gap: 6px;
}

.gemini-side-tab-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 7px 10px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: #94A3B8;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s ease;
}

.gemini-side-tab-btn:hover {
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.05);
}

.gemini-side-tab-btn.active {
    background: #1E293B;
    color: #FFFFFF;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.gemini-side-tab-badge {
    font-size: 9px;
    padding: 1px 5px;
    background: #4338CA;
    color: #FFFFFF;
    border-radius: 9999px;
}

/* History List Container */
.gemini-history-list {
    flex: 1;
    overflow-y: auto;
    padding: 4px 12px 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 3px;
    scrollbar-width: thin;
    scrollbar-color: #334155 transparent;
}

.gemini-history-list::-webkit-scrollbar {
    width: 4px;
}

.gemini-history-list::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 4px;
}

.gemini-history-group-title {
    font-size: 10px;
    font-weight: 800;
    color: #64748B;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 8px 4px 8px;
}

.gemini-history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    border-radius: 8px;
    color: #94A3B8;
    font-size: 12.5px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
    overflow: hidden;
    position: relative;
}

.gemini-history-item:hover {
    background: #1E293B;
    color: #F8FAFC;
}

.gemini-history-item.active {
    background: #1E293B;
    color: #FFFFFF;
    font-weight: 700;
    border-left: 3px solid #818CF8;
}

.gemini-history-item-left {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
    flex: 1;
}

.gemini-history-item-icon {
    font-size: 12px;
    color: #64748B;
    flex-shrink: 0;
}

.gemini-history-item.active .gemini-history-item-icon {
    color: #818CF8;
}

.gemini-history-item-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gemini-history-meta {
    font-size: 10px;
    color: #64748B;
    flex-shrink: 0;
    margin-left: 6px;
}

.gemini-history-item-actions {
    display: none;
    align-items: center;
    gap: 3px;
    flex-shrink: 0;
    margin-left: 6px;
}

.gemini-history-item:hover .gemini-history-meta {
    display: none;
}

.gemini-history-item:hover .gemini-history-item-actions {
    display: flex;
}

.gemini-history-action-icon {
    background: transparent;
    border: none;
    color: #94A3B8;
    font-size: 11px;
    padding: 3px 5px;
    border-radius: 4px;
    cursor: pointer;
    transition: color 0.15s, background 0.15s;
}

.gemini-history-action-icon:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #EF4444;
}

/* Sidebar Footer */
.gemini-sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--gemini-sidebar-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #070B14;
}

.gemini-profile-chip {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.gemini-profile-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1.5px solid #4338CA;
    object-fit: cover;
}

.gemini-profile-details {
    display: flex;
    flex-direction: column;
}

.gemini-profile-name {
    font-size: 13px;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1.2;
}

.gemini-profile-class {
    font-size: 10.5px;
    color: #94A3B8;
}

/* 2. Central Chat Canvas */
.gemini-chat-canvas {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
    position: relative;
    background: var(--gemini-canvas-bg);
    color: var(--gemini-canvas-text);
    overflow: hidden;
    transition: background 0.25s ease, color 0.25s ease;
}

/* Sub-Header Top Utility Bar */
.gemini-canvas-header {
    height: 56px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    border-bottom: 1px solid var(--gemini-border);
    background: var(--gemini-header-bg);
    backdrop-filter: blur(10px);
    z-index: 10;
    transition: background 0.25s ease, border-color 0.25s ease;
}

.gemini-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.gemini-toggle-sidebar-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--gemini-border);
    background: var(--gemini-surface);
    color: var(--gemini-canvas-text);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
}

.gemini-toggle-sidebar-btn:hover {
    background: var(--gemini-border);
}

.gemini-model-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 9999px;
    background: var(--gemini-surface);
    border: 1px solid var(--gemini-border);
    font-size: 12.5px;
    font-weight: 700;
    color: var(--gemini-canvas-text);
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

.gemini-model-pill:hover {
    border-color: #818CF8;
}

.gemini-header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.gemini-header-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    border: 1px solid var(--gemini-border);
    background: var(--gemini-surface);
    color: var(--gemini-muted-text);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.gemini-header-action-btn:hover {
    background: var(--gemini-border);
    color: var(--gemini-canvas-text);
}

/* Header Back Button */
.gemini-header-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: 9999px;
    background: var(--gemini-surface);
    border: 1px solid var(--gemini-border);
    color: var(--gemini-muted-text);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.gemini-header-back-btn:hover {
    background: var(--gemini-border);
    color: var(--gemini-canvas-text);
}

.gemini-header-back-btn i {
    font-size: 12px;
}

/* Header Icon-Only Buttons (New Chat, Menu) */
.gemini-header-icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--gemini-border);
    background: var(--gemini-surface);
    color: var(--gemini-canvas-text);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.15s ease;
    flex-shrink: 0;
}

.gemini-header-icon-btn:hover {
    background: var(--gemini-border);
    border-color: #818CF8;
    color: #818CF8;
}

/* Sidebar Settings Gear Button */
.gemini-sidebar-settings-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: #64748B;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.gemini-sidebar-settings-btn:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.4);
    color: #818CF8;
    transform: rotate(30deg);
}

/* Settings Popup — Floating card inside sidebar above footer */
.gemini-settings-popup {
    position: absolute;
    bottom: 64px;
    left: 10px;
    right: 10px;
    background: #0F172A;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.55);
    z-index: 110;
    transform: translateY(12px) scale(0.97);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.18s ease;
}

.gemini-settings-popup.open {
    transform: translateY(0) scale(1);
    opacity: 1;
    pointer-events: auto;
}

.gemini-settings-popup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px 10px 16px;
    font-size: 13px;
    font-weight: 700;
    color: #F1F5F9;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.gemini-settings-close-btn {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    border: none;
    background: rgba(255, 255, 255, 0.06);
    color: #94A3B8;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.15s ease;
}

.gemini-settings-close-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #EF4444;
}

.gemini-settings-popup-body {
    padding: 8px 0 12px 0;
}

.gemini-settings-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    gap: 10px;
    transition: background 0.15s ease;
}

.gemini-settings-row:hover {
    background: rgba(255, 255, 255, 0.04);
}

.gemini-settings-row-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 500;
    color: #CBD5E1;
}

.gemini-settings-row-label i {
    width: 16px;
    text-align: center;
    font-size: 13px;
}

/* Toggle Switch */
.gemini-settings-toggle {
    width: 44px;
    height: 24px;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.15);
    position: relative;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.2s ease, border-color 0.2s ease;
    padding: 0;
}

.gemini-settings-toggle.active {
    background: linear-gradient(135deg, #6366F1, #4338CA);
    border-color: #818CF8;
}

.gemini-settings-toggle-knob {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #FFFFFF;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    display: block;
}

.gemini-settings-toggle.active .gemini-settings-toggle-knob {
    transform: translateX(20px);
}

/* Settings Action Buttons (Export, Reset) */
.gemini-settings-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border-radius: 7px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.06);
    color: #94A3B8;
    font-size: 11.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.gemini-settings-action-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #F1F5F9;
}

/* Conversation Scroll Viewport */
.gemini-messages-viewport {
    flex: 1 1 0;
    min-height: 0;
    overflow-y: auto;
    padding: 24px 20px 20px 20px;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.gemini-messages-inner {
    max-width: 820px;
    margin: 0 auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Welcome Hero State */
.gemini-welcome-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 30px 16px 20px 16px;
    animation: fadeIn 0.4s ease;
}

.gemini-hero-icon {
    width: 58px;
    height: 58px;
    border-radius: 18px;
    background: linear-gradient(135deg, #6366F1 0%, #4338CA 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    font-size: 24px;
    margin-bottom: 16px;
    box-shadow: 0 10px 25px rgba(67, 56, 202, 0.25);
}

.gemini-hero-title {
    font-size: 30px;
    font-weight: 800;
    color: var(--gemini-canvas-text);
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.gemini-hero-subtitle {
    font-size: 14px;
    color: var(--gemini-muted-text);
    max-width: 520px;
    line-height: 1.6;
    margin-bottom: 28px;
}

.gemini-hero-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    width: 100%;
    max-width: 740px;
}

.gemini-hero-card {
    background: var(--gemini-hero-card-bg);
    border: 1.5px solid var(--gemini-border);
    border-radius: 16px;
    padding: 16px 18px;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    gap: 6px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.gemini-hero-card:hover {
    border-color: #6366F1;
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(99, 102, 241, 0.15);
    background: var(--gemini-hero-card-hover);
}

.gemini-hero-card-icon {
    font-size: 20px;
    margin-bottom: 4px;
}

.gemini-hero-card-title {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--gemini-canvas-text);
}

.gemini-hero-card-prompt {
    font-size: 12px;
    color: var(--gemini-muted-text);
    line-height: 1.4;
}

/* 3. Bottom Input Dock */
.gemini-input-dock {
    position: relative;
    flex-shrink: 0;
    background: var(--gemini-input-dock-gradient);
    padding: 10px 20px max(14px, env(safe-area-inset-bottom)) 20px;
    z-index: 20;
    border-top: 1px solid var(--gemini-border);
    transition: background 0.25s ease;
}

.gemini-input-dock-inner {
    max-width: 820px;
    margin: 0 auto;
    width: 100%;
}

.gemini-input-card {
    background: var(--gemini-input-card-bg);
    border: 1.5px solid var(--gemini-border);
    border-radius: 22px;
    padding: 10px 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.25s ease;
}

.gemini-input-card:focus-within {
    border-color: #6366F1;
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.18);
}

.gemini-textarea {
    width: 100%;
    min-height: 44px;
    max-height: 140px;
    border: none;
    outline: none;
    resize: none;
    background: transparent;
    font-family: inherit;
    font-size: 14.5px;
    color: var(--gemini-canvas-text);
    line-height: 1.5;
    padding: 4px 0;
}

/* Quick Math & Greek Symbol Collapsible Toolbar */
.gemini-quick-math-bar {
    display: flex;
    align-items: center;
    gap: 5px;
    overflow-x: auto;
    padding: 0 2px;
    max-height: 0;
    opacity: 0;
    border-bottom: none;
    margin-bottom: 0;
    transition: max-height 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease, padding 0.25s ease, margin-bottom 0.25s ease;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}

.gemini-quick-math-bar.show {
    max-height: 48px;
    opacity: 1;
    padding: 4px 2px 6px 2px;
    border-bottom: 1px solid var(--gemini-border);
    margin-bottom: 4px;
}

.gemini-quick-math-bar::-webkit-scrollbar {
    display: none;
}

.gemini-dock-tool-btn.active {
    background: #EEF2FF;
    border-color: #818CF8;
    color: #4338CA;
}

.math-sym-btn {
    flex-shrink: 0;
    padding: 3px 8px;
    border-radius: 6px;
    border: 1px solid var(--gemini-border);
    background: var(--gemini-surface);
    color: var(--gemini-canvas-text);
    font-family: 'KaTeX_Main', 'Times New Roman', serif;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.math-sym-btn:hover {
    background: #EEF2FF;
    border-color: #818CF8;
    color: #4338CA;
    transform: translateY(-1px);
}

.gemini-input-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 6px;
    border-top: 1px solid var(--gemini-border);
}

.gemini-input-tools-left {
    display: flex;
    align-items: center;
    gap: 6px;
    position: relative;
}

.gemini-dock-tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 9999px;
    border: 1px solid var(--gemini-border);
    background: var(--gemini-surface);
    color: var(--gemini-muted-text);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.gemini-dock-tool-btn:hover {
    background: #EEF2FF;
    border-color: #C7D2FE;
    color: #4338CA;
}

.gemini-send-circle-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--brand-primary, #4338CA);
    color: #FFFFFF;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 3px 10px rgba(67, 56, 202, 0.3);
}

.gemini-send-circle-btn:hover {
    background: #3730A3;
    transform: scale(1.05);
    box-shadow: 0 5px 14px rgba(67, 56, 202, 0.4);
}

.gemini-send-circle-btn:disabled {
    background: #94A3B8;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Stop Generation Button State */
.gemini-send-circle-btn.stop-btn {
    background: #EF4444;
    box-shadow: 0 3px 10px rgba(239, 68, 68, 0.3);
}
.gemini-send-circle-btn.stop-btn:hover {
    background: #DC2626;
}

.gemini-disclaimer {
    font-size: 11px;
    color: var(--gemini-muted-text);
    text-align: center;
    margin-top: 6px;
}

/* Drag and Drop Overlay */
.gemini-drop-overlay {
    display: none;
    position: absolute;
    inset: 12px;
    border: 2.5px dashed #6366F1;
    background: rgba(99, 102, 241, 0.1);
    backdrop-filter: blur(6px);
    border-radius: 20px;
    z-index: 50;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 12px;
    color: #4338CA;
    font-weight: 800;
    font-size: 16px;
    pointer-events: none;
    animation: fadeIn 0.2s ease;
}

.gemini-drop-overlay.active {
    display: flex;
}

/* Streaming Typewriter Cursor */
.gemini-streaming-cursor {
    display: inline-block;
    width: 8px;
    height: 18px;
    background: #6366F1;
    border-radius: 2px;
    margin-left: 4px;
    vertical-align: -2px;
    animation: geminiBlink 0.8s infinite;
}

@keyframes geminiBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Voice Recording Wave Pulse */
.gemini-voice-pulse {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    margin-left: 4px;
}

.gemini-voice-bar {
    width: 3px;
    height: 10px;
    background: #EF4444;
    border-radius: 2px;
    animation: geminiVoiceWave 0.6s infinite ease-in-out alternate;
}
.gemini-voice-bar:nth-child(2) { animation-delay: 0.15s; height: 16px; }
.gemini-voice-bar:nth-child(3) { animation-delay: 0.3s; height: 12px; }
.gemini-voice-bar:nth-child(4) { animation-delay: 0.45s; height: 18px; }

@keyframes geminiVoiceWave {
    0% { transform: scaleY(0.4); }
    100% { transform: scaleY(1.3); }
}

/* Code Block Styling */
.gemini-code-block-wrapper {
    border-radius: 12px;
    overflow: hidden;
    margin: 12px 0;
    border: 1px solid #1E293B;
    background: #0B0F19;
}

.gemini-code-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 14px;
    background: #151E2E;
    color: #94A3B8;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gemini-copy-code-btn {
    background: transparent;
    border: none;
    color: #94A3B8;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 8px;
    border-radius: 4px;
    transition: all 0.15s ease;
}

.gemini-copy-code-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #FFFFFF;
}

.gemini-code-block-wrapper pre {
    margin: 0;
    padding: 14px;
    overflow-x: auto;
    color: #F8FAFC;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 13px;
    line-height: 1.6;
}

/* Modern User & AI Message Styles */
.ai-msg {
    position: relative;
    display: flex;
    gap: 14px;
    margin-bottom: 20px;
    animation: msgFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.ai-msg.user-msg {
    flex-direction: row-reverse;
    justify-content: flex-start;
}

.ai-msg.user-msg .chat-bubble-wrapper {
    align-items: flex-end;
}

.ai-msg.user-msg .chat-bubble {
    background: var(--gemini-user-bubble-bg);
    color: var(--gemini-canvas-text);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 20px 20px 4px 20px;
    max-width: 85%;
    width: fit-content;
    padding: 12px 18px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.ai-msg.user-msg .msg-action-bar {
    justify-content: flex-end;
}

.ai-msg:not(.user-msg) .chat-bubble-wrapper {
    align-items: flex-start;
    width: 100%;
}

.ai-msg:not(.user-msg) .chat-bubble {
    background: var(--gemini-ai-bubble-bg);
    color: var(--gemini-canvas-text);
    border: 1px solid var(--gemini-border);
    border-radius: 18px;
    width: 100%;
    padding: 16px 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

/* KaTeX Equations Display Overflow Safeguard */
.katex-display {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 6px 0;
    max-width: 100%;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
}

/* Attached Image Preview */
.gemini-attached-preview {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    background: var(--gemini-surface);
    border: 1px solid var(--gemini-border);
    border-radius: 12px;
    margin-bottom: 8px;
    width: fit-content;
    max-width: 100%;
}

.gemini-attached-thumb {
    width: 38px;
    height: 38px;
    border-radius: 6px;
    object-fit: cover;
    border: 1px solid #94A3B8;
}

.gemini-attached-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--gemini-canvas-text);
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gemini-attached-remove {
    background: transparent;
    border: none;
    color: #EF4444;
    cursor: pointer;
    font-size: 14px;
    padding: 2px 4px;
}

.gemini-history-empty {
    padding: 24px 12px;
    text-align: center;
    color: #64748B;
    font-size: 12px;
    line-height: 1.5;
}

.gemini-history-skeleton {
    height: 34px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 8px;
    animation: pulse 1.5s infinite;
}

.gemini-sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 95;
    transition: opacity 0.25s ease;
}

.gemini-sidebar-backdrop.active {
    display: block;
}

/* Mobile Responsiveness (Tablets & Mobile < 900px) */
@media (max-width: 900px) {
    .gemini-history-sidebar {
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        width: 290px;
        max-width: 85vw;
        height: 100vh;
        height: 100dvh;
        transform: translateX(-100%);
        margin-left: 0 !important;
        transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.4);
        z-index: 105;
    }

    .gemini-history-sidebar.open {
        transform: translateX(0);
    }

    #sidebar-close-mobile-btn {
        display: inline-flex !important;
    }

    .gemini-hero-cards-grid {
        grid-template-columns: 1fr;
    }

    .gemini-hero-title {
        font-size: 24px;
    }

    .gemini-canvas-header {
        padding: 0 14px;
    }

    .gemini-messages-viewport {
        padding: 16px 14px;
    }

    .gemini-input-dock {
        padding: 8px 14px max(12px, env(safe-area-inset-bottom)) 14px;
    }
}

/* Ultra-Compact Screens (Mobile < 640px) */
@media (max-width: 640px) {
    .gemini-canvas-header {
        height: 52px;
        padding: 0 10px;
    }

    .gemini-header-left {
        gap: 6px;
    }

    .gemini-header-right {
        gap: 4px;
    }

    .gemini-header-back-btn {
        padding: 6px 10px;
        font-size: 12px;
        gap: 5px;
    }

    .gemini-header-icon-btn {
        width: 34px;
        height: 34px;
        font-size: 13px;
    }

    .gemini-model-pill {
        padding: 5px 10px;
        font-size: 11.5px;
        max-width: 140px;
    }

    .gemini-model-pill #active-mode-label {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 90px;
    }

    .ai-features-dropdown-panel {
        width: min(300px, calc(100vw - 20px)) !important;
        max-width: 95vw;
        left: 0 !important;
        right: auto !important;
    }

    .d-none-mobile {
        display: none !important;
    }

    .ai-msg {
        gap: 10px;
        margin-bottom: 16px;
    }

    .ai-avatar-icon, .user-avatar-icon {
        width: 32px;
        height: 32px;
        font-size: 13px;
    }

    .chat-bubble {
        font-size: 13.5px;
        padding: 12px 14px !important;
    }

    .ai-msg.user-msg .chat-bubble {
        max-width: 92%;
    }

    .gemini-messages-viewport {
        padding: 12px 10px;
    }

    .gemini-input-dock {
        padding: 6px 10px max(10px, env(safe-area-inset-bottom)) 10px;
    }

    .gemini-input-card {
        padding: 8px 12px;
        border-radius: 18px;
    }

    .gemini-textarea {
        font-size: 13.5px;
        min-height: 38px;
    }

    .gemini-dock-tool-btn {
        padding: 5px 10px;
        font-size: 11px;
    }

    .gemini-send-circle-btn {
        width: 32px;
        height: 32px;
    }

    .gemini-disclaimer {
        font-size: 10px;
    }
}

/* Narrow mobile screens (<= 400px) */
@media (max-width: 400px) {
    .gemini-canvas-header {
        padding: 0 8px;
    }

    .gemini-header-back-btn {
        width: 34px;
        height: 34px;
        padding: 0;
        justify-content: center;
        border-radius: 8px;
    }

    .gemini-header-back-btn span {
        display: none !important;
    }

    .gemini-model-pill {
        max-width: 125px;
        padding: 5px 8px;
        font-size: 11px;
    }

    .gemini-model-pill #active-mode-label {
        max-width: 72px;
    }
}