:root {
    --primary-color: #7c3aed;
    --secondary-color: #a855f7;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --dark-color: #1f2937;
    --light-color: #f8fafc;
    --border-color: #e5e7eb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --superior-purple: #7c3aed;
    --superior-light-purple: #a855f7;
    --superior-dark-purple: #5b21b6;
    --superior-ultra-light: #ede9fe;
    --superior-gradient: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #c084fc 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, #f8fafc 0%, #ede9fe 50%, #f3e8ff 100%);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    color: var(--text-primary);
}

[data-bs-theme="dark"] body {
    background: linear-gradient(135deg, #0d1117 0%, #161b22 50%, #21262d 100%) !important;
    color: #f0f6fc !important;
}

/* Dark Theme Variables - World Class Design */
[data-bs-theme="dark"] {
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --border-color: #30363d;
    --light-color: #21262d;
    --superior-purple: #8b5cf6;
    --superior-light-purple: #a78bfa;
    --superior-dark-purple: #7c3aed;
    --superior-ultra-light: rgba(139, 92, 246, 0.1);
    --superior-gradient: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 50%, #c084fc 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --dark-bg-primary: #0d1117;
    --dark-bg-secondary: #161b22;
    --dark-bg-tertiary: #21262d;
    --dark-surface: #30363d;
    --dark-surface-hover: #484f58;
    --dark-accent: #58a6ff;
    --dark-success: #3fb950;
    --dark-warning: #d29922;
    --dark-danger: #f85149;
    --glass-dark: rgba(33, 38, 45, 0.8);
    --glass-dark-light: rgba(48, 54, 61, 0.6);
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100vh;
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    box-shadow: var(--shadow-xl);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar.active {
    left: 0;
}

.sidebar-header {
    padding: 25px 20px;
    background: rgba(0, 0, 0, 0.3);
    color: white;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h4 {
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 5px;
    background: var(--superior-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-header small {
    opacity: 0.8;
    font-weight: 400;
}

.sidebar-menu {
    list-style: none;
    padding: 20px 0 120px 0;
    margin: 0;
    height: calc(100vh - 200px);
    overflow-y: auto;
}

.sidebar-menu li {
    margin-bottom: 5px;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 15px 25px;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 0 25px 25px 0;
    margin-right: 15px;
    font-weight: 500;
}

.sidebar-menu a:hover, .sidebar-menu a.active {
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    color: white;
    text-decoration: none;
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(142, 68, 173, 0.3);
}

.sidebar-menu i {
    margin-right: 15px;
    width: 20px;
    font-size: 1.1rem;
}

/* Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 999;
    display: none;
    backdrop-filter: blur(2px);
}

.overlay.active {
    display: block;
}

/* Main Content */
.main-content {
    margin-left: 0;
    transition: margin-left 0.3s ease;
    min-height: 100vh;
}

/* Top Navigation - Mobile First Design */
.top-nav {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(237, 233, 254, 0.95) 100%);
    backdrop-filter: blur(15px);
    padding: 15px 20px;
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.15);
    margin-bottom: 25px;
    border-bottom: 2px solid rgba(168, 85, 247, 0.2);
    border-radius: 0 0 25px 25px;
    position: sticky;
    top: 0;
    z-index: 99;
    border: 2px solid rgba(168, 85, 247, 0.2);
    border-top: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

/* Mobile-first header design */
@media (max-width: 768px) {
    .top-nav {
        padding: 12px 15px;
        margin-bottom: 20px;
        border-radius: 0 0 20px 20px;
        /* Keep position: sticky for mobile */
    }

    .university-nav-name {
        font-size: 0.9rem !important;
        font-weight: 600;
    }

    .university-nav-logo {
        height: 30px !important;
        margin-right: 10px !important;
    }

    .burger-btn {
        padding: 8px 12px;
        font-size: 1.1rem;
        margin-right: 10px;
    }

    .theme-toggle {
        width: 40px !important;
        height: 40px !important;
        padding: 0 !important;
        margin-left: 12px !important;
        font-size: 1rem !important;
        position: relative !important;
        top: auto !important;
        right: auto !important;
    }

    #theme-icon {
        font-size: 1.1rem;
    }
}

/* Tablet adjustments */
@media (min-width: 769px) and (max-width: 1024px) {
    .top-nav {
        padding: 18px 20px;
    }

    .university-nav-logo {
        height: 38px;
    }

    .university-nav-name {
        font-size: 1.05rem;
    }

    .semester-info {
        font-size: 0.9rem;
    }

    .theme-toggle {
        width: 42px;
        height: 42px;
    }
}

/* Desktop and larger screens */
@media (min-width: 1025px) {
    .top-nav {
        padding: 20px 25px;
    }

    .university-nav-logo {
        height: 40px;
    }

    .university-nav-name {
        font-size: 1.1rem;
    }

    .theme-toggle {
        width: 44px;
        height: 44px;
    }
}

.burger-btn {
    background: none;
    border: none;
    font-size: 22px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.burger-btn:hover {
    background: var(--light-color);
    transform: scale(1.05);
}

.burger-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Container Styles */
.container-fluid {
    padding: 0 25px;
    max-width: 1400px;
    margin: 0 auto;
}

.content-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 35px;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    margin: 0 auto 25px auto;
    border: 1px solid rgba(255, 255, 255, 0.2);
    max-width: 1400px;
}

/* Form Styles */
.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-control {
    border-radius: 12px;
    border: 2px solid var(--border-color);
    padding: 12px 16px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    background: white;
}

.form-control:focus {
    border-color: var(--superior-purple);
    box-shadow: 0 0 0 3px rgba(142, 68, 173, 0.1);
    outline: none;
}

/* Enhanced Card Styles */
.card {
    margin-bottom: 25px;
    border: none;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    background: white;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.card-body {
    padding: 0;
}

.card-title {
    background: rgba(142, 68, 173, 0.2);
    backdrop-filter: blur(15px);
    color: var(--text-primary);
    padding: 20px 25px;
    margin: 0;
    font-weight: 600;
    font-size: 1.1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.card-title i {
    margin-right: 10px;
    color: var(--superior-purple);
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}

/* Dark Theme Card Title */
[data-bs-theme="dark"] .card-title {
    background: linear-gradient(135deg, var(--dark-surface) 0%, var(--dark-surface-hover) 100%);
    backdrop-filter: blur(20px);
    border: 1px solid var(--dark-surface-hover);
    border-bottom: 1px solid rgba(139, 92, 246, 0.2);
    color: var(--text-primary);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.6);
    position: relative;
}

[data-bs-theme="dark"] .card-title::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--superior-gradient);
    border-radius: 4px 4px 0 0;
}

[data-bs-theme="dark"] .card-title i {
    color: var(--superior-light-purple);
    filter: drop-shadow(0 2px 4px rgba(139, 92, 246, 0.4));
}

/* Superior Table Styles - Modern Light Purple Theme */
.table-container {
    padding: 0;
    overflow: hidden;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(232, 218, 239, 0.3) 0%, rgba(245, 237, 255, 0.3) 100%);
    border: 2px solid rgba(187, 143, 206, 0.2);
    box-shadow: 0 12px 35px rgba(142, 68, 173, 0.1);
}

.table {
    margin: 0;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.95rem;
}

.table thead th {
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    color: white;
    font-weight: 700;
    text-align: center;
    padding: 20px 15px;
    border: none;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-bottom: 3px solid rgba(187, 143, 206, 0.5);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    position: relative;
}

.table thead th:first-child {
    border-radius: 20px 0 0 0;
}

.table thead th:last-child {
    border-radius: 0 20px 0 0;
}

.table tbody tr {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 2px solid rgba(187, 143, 206, 0.1);
    position: relative;
}

.table tbody tr:hover {
    background: linear-gradient(135deg, rgba(245, 237, 255, 0.8) 0%, rgba(255, 252, 255, 0.9) 100%);
    transform: scale(1.02);
    box-shadow: 0 8px 25px rgba(142, 68, 173, 0.15);
}

.table tbody tr:last-child td:first-child {
    border-radius: 0 0 0 18px;
}

.table tbody tr:last-child td:last-child {
    border-radius: 0 0 18px 0;
}

.table tbody td {
    padding: 18px 15px;
    vertical-align: middle;
    border: none;
    font-weight: 600;
    position: relative;
}

/* Enhanced Day Column Styling */
.table tbody td:first-child {
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    color: white;
    font-weight: 700;
    text-align: center;
    min-width: 120px;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-right: 3px solid rgba(255, 255, 255, 0.3);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    font-size: 0.9rem;
}

/* Enhanced Time Columns */
.table tbody td:nth-child(2),
.table tbody td:nth-child(3) {
    background: linear-gradient(135deg, rgba(187, 143, 206, 0.15) 0%, rgba(215, 179, 224, 0.2) 100%);
    color: var(--superior-dark-purple);
    font-weight: 700;
    text-align: center;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    border-right: 2px solid rgba(187, 143, 206, 0.2);
    text-shadow: 0 1px 2px rgba(142, 68, 173, 0.2);
}

/* Enhanced Location Column */
.table tbody td:nth-child(4) {
    background: linear-gradient(135deg, rgba(215, 179, 224, 0.2) 0%, rgba(232, 218, 239, 0.3) 100%);
    color: var(--superior-dark-purple);
    font-weight: 700;
    font-size: 0.95rem;
    border-right: 2px solid rgba(187, 143, 206, 0.2);
    text-align: center;
}

/* Enhanced Subject Column */
.table tbody td:nth-child(5) {
    background: linear-gradient(135deg, rgba(245, 237, 255, 0.5) 0%, rgba(255, 252, 255, 0.6) 100%);
    color: var(--superior-purple);
    font-weight: 700;
    font-size: 0.95rem;
    border-right: 2px solid rgba(187, 143, 206, 0.2);
}

/* Enhanced Groups/Teachers Column */
.table tbody td:nth-child(6) {
    background: linear-gradient(135deg, rgba(232, 218, 239, 0.3) 0%, rgba(245, 237, 255, 0.4) 100%);
    color: var(--superior-dark-purple);
    font-weight: 700;
    font-size: 0.95rem;
}

/* Responsive Table */
.table-responsive {
    /* border-radius: 16px; */
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Page Title */
.page-title {
    color: var(--text-primary);
    margin-bottom: 25px;
    font-weight: 700;
    font-size: 1.75rem;
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    margin-top: 10px;
    border-radius: 2px;
}

/* University Navigation Brand */
.university-nav-brand {
    flex-shrink: 0;
}

.university-nav-logo {
    height: 40px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.university-nav-name {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.2;
}

.university-nav-tagline {
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 400;
    line-height: 1;
}

.semester-info {
    font-weight: 600;
    color: var(--primary-color) !important;
}

/* Sidebar Logo */
.sidebar-logo {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1) drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* Dark Theme Navigation */
[data-bs-theme="dark"] .university-nav-name {
    color: var(--text-primary);
}

[data-bs-theme="dark"] .university-nav-tagline {
    color: var(--text-secondary);
}

[data-bs-theme="dark"] .university-nav-logo {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3)) brightness(1.1);
}

/* Button Styles */
.btn-primary {
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    border: none;
    border-radius: 12px;
    padding: 12px 24px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(142, 68, 173, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(142, 68, 173, 0.4);
    background: linear-gradient(135deg, var(--superior-dark-purple) 0%, var(--superior-purple) 100%);
}

/* Enhanced Theme Toggle with Day/Night Animation */
.theme-toggle {
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(142, 68, 173, 0.3);
    overflow: hidden;
    position: relative;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

[data-bs-theme="dark"] .theme-toggle::before {
    opacity: 1;
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 12px 35px rgba(142, 68, 173, 0.5);
}

[data-bs-theme="dark"] .theme-toggle {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

[data-bs-theme="dark"] .theme-toggle:hover {
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6);
}

/* Theme Icon Animations */
#theme-icon {
    font-size: 1.5rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 2;
}

/* Sun Icon (Light Mode) */
.theme-toggle .fa-moon {
    color: #1a1a2e;
    transform: rotate(0deg) scale(1);
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.theme-toggle:hover .fa-moon {
    transform: rotate(180deg) scale(1.1);
    text-shadow: 0 0 15px rgba(255, 215, 0, 0.8);
}

/* Moon Icon (Dark Mode) */
.theme-toggle .fa-sun {
    color: #FFD700;
    transform: rotate(0deg) scale(1);
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.6);
}

.theme-toggle:hover .fa-sun {
    transform: rotate(-180deg) scale(1.1);
    text-shadow: 0 0 20px rgba(255, 215, 0, 1);
}

/* Pulsing Animation for Theme Toggle */
@keyframes dayPulse {
    0%, 100% { 
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15), 0 0 0 0 rgba(255, 215, 0, 0.4);
    }
    50% { 
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15), 0 0 0 10px rgba(255, 215, 0, 0);
    }
}

@keyframes nightPulse {
    0%, 100% { 
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4), 0 0 0 0 rgba(135, 206, 235, 0.4);
    }
    50% { 
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4), 0 0 0 10px rgba(135, 206, 235, 0);
    }
}

.theme-toggle {
    animation: dayPulse 3s infinite;
}

[data-bs-theme="dark"] .theme-toggle {
    animation: nightPulse 3s infinite;
}

/* Stars Animation for Dark Mode */
.theme-toggle::after {
    /* content: '✨'; */
    position: absolute;
    top: -5px;
    right: -5px;
    font-size: 0.8rem;
    opacity: 0;
    transition: all 0.3s ease;
    animation: twinkle 2s infinite;
}

[data-bs-theme="dark"] .theme-toggle::after {
    opacity: 1;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* Cloud Animation for Light Mode */
.theme-toggle::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    opacity: 0;
    transition: all 0.3s ease;
}

.theme-toggle:not([data-bs-theme="dark"])::before {
    opacity: 1;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-3px); }
}

/* Responsive Design - Theme Toggle Mobile Styles Already Handled Above */

/* Hide sections by default */
.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Dark Theme Support - World Class Design */
[data-bs-theme="dark"] {
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --border-color: #30363d;
    --light-color: #21262d;
    --superior-purple: #8b5cf6;
    --superior-light-purple: #a78bfa;
    --superior-dark-purple: #7c3aed;
    --superior-ultra-light: rgba(139, 92, 246, 0.1);
    --superior-gradient: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 50%, #c084fc 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --dark-bg-primary: #0d1117;
    --dark-bg-secondary: #161b22;
    --dark-bg-tertiary: #21262d;
    --dark-surface: #30363d;
    --dark-surface-hover: #484f58;
    --dark-accent: #58a6ff;
    --dark-success: #3fb950;
    --dark-warning: #d29922;
    --dark-danger: #f85149;
    --glass-dark: rgba(33, 38, 45, 0.8);
    --glass-dark-light: rgba(48, 54, 61, 0.6);
}

[data-bs-theme="dark"] body {
    background: linear-gradient(135deg, var(--dark-bg-primary) 0%, var(--dark-bg-secondary) 50%, var(--dark-bg-tertiary) 100%) !important;
}

[data-bs-theme="dark"] .content-container {
    background: var(--glass-dark);
    backdrop-filter: blur(20px);
    border: 1px solid var(--dark-surface);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8), 
                0 0 0 1px rgba(139, 92, 246, 0.1);
    color: var(--text-primary);
}

[data-bs-theme="dark"] .top-nav {
    background: linear-gradient(135deg, var(--glass-dark) 0%, var(--glass-dark-light) 100%) !important;
    backdrop-filter: blur(20px);
    border-color: var(--dark-surface) !important;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4),
                0 0 0 1px rgba(139, 92, 246, 0.1);
}

[data-bs-theme="dark"] .burger-btn {
    color: var(--text-primary);
    background: var(--dark-surface);
    border: 1px solid var(--dark-surface-hover);
}

[data-bs-theme="dark"] .burger-btn:hover {
    background: var(--dark-surface-hover);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

[data-bs-theme="dark"] .form-control {
    background: var(--dark-surface);
    border: 1px solid var(--dark-surface-hover);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

[data-bs-theme="dark"] .form-control:focus {
    background: var(--dark-surface);
    border-color: var(--superior-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
    color: var(--text-primary);
}

[data-bs-theme="dark"] .form-control::placeholder {
    color: var(--text-secondary);
}

[data-bs-theme="dark"] .card {
    background: var(--glass-dark-light);
    backdrop-filter: blur(15px);
    border: 1px solid var(--dark-surface);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3),
                0 0 0 1px rgba(139, 92, 246, 0.05);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

[data-bs-theme="dark"] .card:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4),
                0 0 0 1px rgba(139, 92, 246, 0.1);
}

/* Class Selection Modal */
.class-selector-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    cursor: pointer; /* Allow clicking outside to close */
}

.class-selector-content {
    background: white;
    border-radius: 20px;
    padding: 35px;
    max-width: 500px;
    width: 100%;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    position: relative;
    animation: modalSlideUp 0.3s ease-out;
    cursor: default; /* Prevent closing when clicking content */
}

[data-bs-theme="dark"] .class-selector-content {
    background: var(--glass-dark);
    backdrop-filter: blur(25px);
    border: 1px solid var(--dark-surface);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.8),
                0 0 0 1px rgba(139, 92, 246, 0.1);
    color: var(--text-primary);
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.class-selector-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--superior-purple);
    margin-bottom: 15px;
    text-align: center;
}

.class-selector-subtitle {
    color: var(--text-secondary);
    margin-bottom: 25px;
    text-align: center;
    font-size: 1rem;
}

.class-select-container {
    margin-bottom: 25px;
}

.class-select-container select {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    background: white;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.class-select-container select:focus {
    border-color: var(--superior-purple);
    box-shadow: 0 0 0 3px rgba(142, 68, 173, 0.1);
    outline: none;
}

[data-bs-theme="dark"] .class-select-container select {
    background: var(--dark-surface);
    border: 1px solid var(--dark-surface-hover);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

[data-bs-theme="dark"] .class-select-container select:focus {
    background: var(--dark-surface);
    border-color: var(--superior-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
    color: var(--text-primary);
}

/* Dark Theme - Additional Premium Components */
[data-bs-theme="dark"] .alert {
    background: var(--glass-dark-light);
    border: 1px solid var(--dark-surface);
    color: var(--text-primary);
    backdrop-filter: blur(15px);
}

[data-bs-theme="dark"] .alert-success {
    background: rgba(63, 185, 80, 0.1);
    border-color: var(--dark-success);
    color: var(--dark-success);
}

[data-bs-theme="dark"] .alert-warning {
    background: rgba(210, 153, 34, 0.1);
    border-color: var(--dark-warning);
    color: var(--dark-warning);
}

[data-bs-theme="dark"] .alert-danger {
    background: rgba(248, 81, 73, 0.1);
    border-color: var(--dark-danger);
    color: var(--dark-danger);
}

[data-bs-theme="dark"] .alert-info {
    background: rgba(88, 166, 255, 0.1);
    border-color: var(--dark-accent);
    color: var(--dark-accent);
}

[data-bs-theme="dark"] .badge {
    background: var(--superior-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}

[data-bs-theme="dark"] .badge-secondary {
    background: var(--dark-surface);
    color: var(--text-primary);
    border: 1px solid var(--dark-surface-hover);
}

[data-bs-theme="dark"] .list-group-item {
    background: var(--glass-dark-light);
    border: 1px solid var(--dark-surface);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

[data-bs-theme="dark"] .list-group-item:hover {
    background: var(--dark-surface-hover);
    border-color: var(--superior-purple);
    transform: translateX(5px);
}

[data-bs-theme="dark"] .dropdown-menu {
    background: var(--glass-dark);
    backdrop-filter: blur(20px);
    border: 1px solid var(--dark-surface);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
}

[data-bs-theme="dark"] .dropdown-item {
    color: var(--text-primary);
    transition: all 0.3s ease;
}

[data-bs-theme="dark"] .dropdown-item:hover {
    background: var(--dark-surface-hover);
    color: var(--superior-light-purple);
}

[data-bs-theme="dark"] .text-muted {
    color: var(--text-secondary) !important;
}

[data-bs-theme="dark"] .border {
    border-color: var(--dark-surface) !important;
}

[data-bs-theme="dark"] .bg-light {
    background-color: var(--dark-surface) !important;
}

[data-bs-theme="dark"] hr {
    border-color: var(--dark-surface);
    opacity: 0.3;
}

[data-bs-theme="dark"] .navbar {
    background: var(--glass-dark) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--dark-surface);
}

[data-bs-theme="dark"] .nav-link {
    color: var(--text-primary) !important;
    transition: all 0.3s ease;
}

[data-bs-theme="dark"] .nav-link:hover {
    color: var(--superior-light-purple) !important;
}

[data-bs-theme="dark"] .progress {
    background-color: var(--dark-surface);
}

[data-bs-theme="dark"] .progress-bar {
    background: var(--superior-gradient);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}

/* Dark Theme - Enhanced Scrollbars */
[data-bs-theme="dark"] ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-track {
    background: var(--dark-bg-secondary);
    border-radius: 4px;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    border-radius: 4px;
    transition: all 0.3s ease;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--superior-light-purple) 0%, var(--superior-purple) 100%);
    box-shadow: 0 0 8px rgba(139, 92, 246, 0.5);
}

/* Dark Theme - Selection Colors */
[data-bs-theme="dark"] ::selection {
    background: rgba(139, 92, 246, 0.3);
    color: var(--text-primary);
}

[data-bs-theme="dark"] ::-moz-selection {
    background: rgba(139, 92, 246, 0.3);
    color: var(--text-primary);
}

/* Dark Theme - Glow Effects for Interactive Elements */
[data-bs-theme="dark"] .card:hover::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--superior-purple), var(--superior-light-purple));
    border-radius: inherit;
    z-index: -1;
    opacity: 0.1;
    transition: opacity 0.3s ease;
}

[data-bs-theme="dark"] .btn-primary::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--superior-purple), var(--superior-light-purple));
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

[data-bs-theme="dark"] .btn-primary:hover::before {
    opacity: 0.3;
}

/* Dark Theme - Focus Indicators */
[data-bs-theme="dark"] *:focus {
    outline: 2px solid rgba(139, 92, 246, 0.5);
    outline-offset: 2px;
}

[data-bs-theme="dark"] *:focus:not(:focus-visible) {
    outline: none;
}

.class-selector-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.btn-save-class {
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-save-class:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(142, 68, 173, 0.4);
}

.btn-skip-class {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    padding: 12px 30px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-skip-class:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

/* Dashboard Class Selector - Enhanced Purple Theme */
.dashboard-class-selector {
    background: linear-gradient(135deg, rgba(237, 233, 254, 0.95) 0%, rgba(245, 243, 255, 0.95) 50%, rgba(250, 245, 255, 0.95) 100%);
    border: 3px solid var(--superior-light-purple);
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 0;
    backdrop-filter: blur(15px);
    box-shadow: 0 12px 35px rgba(124, 58, 237, 0.15);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.dashboard-class-selector::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--superior-gradient);
    border-radius: 20px 20px 0 0;
}

.dashboard-class-selector::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--superior-purple) 0%, var(--superior-light-purple) 50%, #d7b3e0 100%);
    border-radius: 20px 20px 0 0;
}

.dashboard-class-selector h5 {
    color: var(--superior-purple);
    font-weight: 700;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.2rem;
    text-shadow: 0 1px 3px rgba(142, 68, 173, 0.2);
}

.dashboard-class-selector h5 i {
    color: var(--superior-light-purple);
    font-size: 1.3rem;
    filter: drop-shadow(0 2px 4px rgba(142, 68, 173, 0.3));
}

.dashboard-class-selector select {
    width: 100%;
    padding: 15px 20px;
    border: 3px solid rgba(187, 143, 206, 0.3);
    border-radius: 15px;
    font-size: 1.1rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 241, 255, 0.95) 100%);
    color: var(--text-primary);
    margin-bottom: 15px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(142, 68, 173, 0.1);
}

.dashboard-class-selector select:focus {
    border-color: var(--superior-purple);
    box-shadow: 0 0 0 4px rgba(142, 68, 173, 0.2);
    outline: none;
    background: linear-gradient(135deg, rgba(255, 255, 255, 1) 0%, rgba(245, 237, 255, 1) 100%);
    transform: translateY(-2px);
}

.dashboard-class-selector select option {
    background: white;
    color: var(--text-primary);
    padding: 10px;
    font-weight: 600;
}

#selectedClassInfo {
    background: linear-gradient(135deg, rgba(187, 143, 206, 0.2) 0%, rgba(215, 179, 224, 0.25) 100%);
    padding: 12px 18px;
    border-radius: 12px;
    border: 2px solid rgba(187, 143, 206, 0.3);
    margin-top: 10px;
}

#selectedClassInfo small {
    color: var(--superior-dark-purple);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

#selectedClassInfo i {
    color: var(--superior-purple);
}

/* Enhanced Class Status Indicators */
.modern-schedule-item.current-class {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(34, 197, 94, 0.25) 100%);
    border-color: #10b981;
    animation: pulse-green 2s infinite;
}

.modern-schedule-item.current-class::before {
    background: linear-gradient(180deg, #10b981 0%, #059669 100%);
    width: 8px;
}

.modern-schedule-item.past-class {
    background: linear-gradient(135deg, rgba(156, 163, 175, 0.3) 0%, rgba(209, 213, 219, 0.4) 100%);
    border-color: #9ca3af;
    opacity: 0.7;
}

.modern-schedule-item.past-class::before {
    background: linear-gradient(180deg, #9ca3af 0%, #6b7280 100%);
}

.modern-schedule-item.past-class .subject,
.modern-schedule-item.past-class .teacher,
.modern-schedule-item.past-class .time {
    opacity: 0.6;
}

@keyframes pulse-green {
    0%, 100% {
        box-shadow: 0 12px 30px rgba(16, 185, 129, 0.2), 0 0 0 0 rgba(16, 185, 129, 0.4);
    }
    50% {
        box-shadow: 0 12px 30px rgba(16, 185, 129, 0.3), 0 0 0 10px rgba(16, 185, 129, 0);
    }
}

@keyframes pulse-red {
    0%, 100% {
        box-shadow: 0 8px 25px rgba(239, 68, 68, 0.4), 0 0 0 0 rgba(239, 68, 68, 0.6);
    }
    50% {
        box-shadow: 0 8px 25px rgba(239, 68, 68, 0.6), 0 0 0 8px rgba(239, 68, 68, 0);
    }
}

/* Loading States */
.spinner-border {
    width: 2rem;
    height: 2rem;
    border: 0.25em solid rgba(142, 68, 173, 0.25);
    border-right-color: var(--superior-purple);
    border-radius: 50%;
    animation: spinner-border 0.75s linear infinite;
}

@keyframes spinner-border {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Dark Mode Status Indicators */
[data-bs-theme="dark"] .modern-schedule-item.current-class {
    background: #000000;
    border-color: #ffffff;
    box-shadow: 0 0 0 2px #ffffff;
}

[data-bs-theme="dark"] .modern-schedule-item.past-class {
    background: #000000;
    border-color: #333333;
    opacity: 0.6;
}

[data-bs-theme="dark"] .spinner-border {
    border: 0.25em solid rgba(255, 255, 255, 0.25);
    border-right-color: #ffffff;
}

/* Responsive Design - Enhanced Mobile First */
@media (max-width: 576px) {
    .container-fluid {
        padding: 0 10px;
    }
    
    .content-container {
        padding: 15px;
        margin: 0 5px 15px 5px;
        border-radius: 15px;
    }
    
    .page-title {
        font-size: 1.4rem;
        margin-bottom: 20px;
    }
    
    .dashboard-card {
        height: 180px;
        margin-bottom: 15px;
    }
    
    .dashboard-card .card-body {
        padding: 15px 10px;
    }
    
    .dashboard-card .card-icon {
        font-size: 1.8rem;
        margin-bottom: 8px;
    }
    
    .dashboard-card .card-value {
        font-size: 1.6rem;
    }
    
    .dashboard-card .card-title {
        font-size: 0.85rem;
        min-height: 1.8rem;
    }
    
    .dashboard-card .btn {
        padding: 6px 14px;
        font-size: 0.8rem;
    }
    
    .modern-schedule-item {
        flex-direction: column;
        align-items: flex-start;
        padding: 15px;
        margin-bottom: 12px;
    }
    
    .modern-schedule-item .left {
        width: 100%;
        margin-bottom: 10px;
        gap: 15px;
    }
    
    .modern-schedule-item .time {
        min-width: auto;
        margin-bottom: 5px;
        font-size: 1rem;
        padding: 6px 10px;
    }
    
    .modern-schedule-item .location {
        width: 100%;
        margin-top: 8px;
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    .next-class-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .next-class-timer {
        width: 100%;
        min-width: auto;
        font-size: 1rem;
        padding: 12px 15px;
    }
    
    .next-class-timer-large {
        font-size: 1.2rem;
        padding: 15px 18px;
    }
    
    .search-container .form-control {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .table {
        font-size: 0.8rem;
    }
    
    .table thead th {
        padding: 12px 8px;
        font-size: 0.75rem;
    }
    
    .table tbody td {
        padding: 10px 8px;
        font-size: 0.8rem;
    }
    
    .dashboard-class-selector {
        padding: 18px;
        margin-bottom: 20px;
        border-radius: 15px;
    }
    
    .dashboard-class-selector h5 {
        font-size: 1.1rem;
        margin-bottom: 15px;
    }
    
    .dashboard-class-selector select {
        padding: 12px 15px;
        font-size: 1rem;
        border-radius: 12px;
    }
}

@media (min-width: 577px) and (max-width: 768px) {
    .container-fluid {
        padding: 0 15px;
    }
    
    .content-container {
        padding: 20px;
        margin: 0 10px 20px 10px;
    }
    
    .page-title {
        font-size: 1.6rem;
    }
    
    .dashboard-card {
        height: 200px;
    }
    
    .modern-schedule-item .time {
        min-width: 80px;
    }
}

@media (min-width: 769px) and (max-width: 992px) {
    .container-fluid {
        padding: 0 20px;
    }
    
    .content-container {
        padding: 25px;
        margin: 0 15px 25px 15px;
    }
}

@media (min-width: 993px) {
    .container-fluid {
        padding: 0 25px;
        max-width: 1400px;
        margin: 0 auto;
    }
    
    .content-container {
        padding: 35px;
        margin: 0 auto 25px auto;
        max-width: 1400px;
    }
}

/* Dashboard Cards - Enhanced */
.dashboard-card {
    height: 240px;
    border: none;
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, rgba(237, 233, 254, 0.95) 0%, rgba(245, 243, 255, 0.95) 100%);
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.15);
    position: relative;
    border: 2px solid rgba(168, 85, 247, 0.2);
}

/* Modern Today Schedule Card - Light Purple Theme */
.modern-schedule-card {
    border-radius: 20px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(237, 233, 254, 0.95) 0%, rgba(245, 243, 255, 0.95) 50%, rgba(250, 245, 255, 0.95) 100%);
    box-shadow: 0 12px 35px rgba(124, 58, 237, 0.15);
    border: 2px solid rgba(168, 85, 247, 0.3);
    backdrop-filter: blur(15px);
    position: relative;
}

.modern-schedule-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--superior-purple) 0%, var(--superior-light-purple) 50%, #d7b3e0 100%);
    border-radius: 20px 20px 0 0;
}

.modern-schedule-card .card-body {
    padding: 25px;
    position: relative;
}

.modern-schedule-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.modern-schedule-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 20px;
    border-radius: 15px;
    margin-bottom: 15px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(248, 241, 255, 0.9) 100%);
    border: 2px solid rgba(187, 143, 206, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(142, 68, 173, 0.08);
    position: relative;
    overflow: hidden;
}

.modern-schedule-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 5px;
    background: linear-gradient(180deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    border-radius: 0 15px 15px 0;
}

.modern-schedule-item:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 30px rgba(142, 68, 173, 0.2);
    border-color: var(--superior-light-purple);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(245, 237, 255, 1) 100%);
}

.modern-schedule-item .left {
    display: flex;
    gap: 20px;
    align-items: center;
    flex: 1;
}

.modern-schedule-item .time {
    font-family: 'Courier New', monospace;
    font-weight: 800;
    color: var(--superior-purple);
    min-width: 90px;
    text-align: center;
    font-size: 1.1rem;
    background: linear-gradient(135deg, rgba(142, 68, 173, 0.1) 0%, rgba(187, 143, 206, 0.15) 100%);
    padding: 8px 12px;
    border-radius: 10px;
    border: 2px solid rgba(142, 68, 173, 0.2);
    text-shadow: 0 1px 3px rgba(142, 68, 173, 0.3);
}

.modern-schedule-item .meta {
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
}

.modern-schedule-item .subject {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-dark-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modern-schedule-item .teacher {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 600;
    opacity: 0.8;
}

.modern-schedule-item .location {
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--superior-light-purple) 0%, #d7b3e0 100%);
    padding: 8px 16px;
    border-radius: 12px;
    font-size: 0.9rem;
    text-align: center;
    min-width: 80px;
    box-shadow: 0 4px 12px rgba(187, 143, 206, 0.3);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

/* Next Class Card - Modern Light Purple Theme */
.modern-next-card {
    border-radius: 20px;
    overflow: hidden;
    padding: 0;
    background: linear-gradient(135deg, rgba(237, 233, 254, 0.95) 0%, rgba(245, 243, 255, 0.95) 50%, rgba(250, 245, 255, 0.95) 100%);
    box-shadow: 0 15px 40px rgba(124, 58, 237, 0.18);
    border: 2px solid rgba(168, 85, 247, 0.3);
    backdrop-filter: blur(15px);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.modern-next-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--superior-gradient);
    border-radius: 20px 20px 0 0;
}

.modern-next-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--superior-purple) 0%, var(--superior-light-purple) 50%, #d7b3e0 100%);
    border-radius: 20px 20px 0 0;
}

.modern-next-card .card-body {
    padding: 25px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    position: relative;
}

.next-class-subject {
    font-size: 1.3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-dark-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 5px;
}

.next-class-teacher {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 10px;
}

.next-class-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* Enhanced countdown timer */
.next-class-timer {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 20px;
    border-radius: 15px;
    background: var(--superior-gradient);
    color: white;
    font-weight: 800;
    font-size: 1.1rem;
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.3);
    min-width: 160px;
    text-align: center;
    border: 2px solid rgba(255, 255, 255, 0.2);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.next-class-timer::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.next-class-timer-large {
    font-size: 1.4rem;
    padding: 18px 25px;
    min-width: 200px;
    border-radius: 18px;
}

/* Dark mode adjustments - Pure Black Theme */
[data-bs-theme="dark"] .modern-schedule-card {
    background: #000000;
    border: 2px solid #333333;
    box-shadow: 0 15px 40px rgba(255, 255, 255, 0.1);
}

[data-bs-theme="dark"] .modern-schedule-card::before {
    background: linear-gradient(90deg, #ffffff 0%, #cccccc 50%, #ffffff 100%);
}

[data-bs-theme="dark"] .modern-schedule-item {
    background: #000000;
    border: 2px solid #333333;
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
}

[data-bs-theme="dark"] .modern-schedule-item::before {
    background: #ffffff;
}

[data-bs-theme="dark"] .modern-schedule-item:hover {
    background: #111111;
    border-color: #ffffff;
    box-shadow: 0 12px 35px rgba(255, 255, 255, 0.2);
}

[data-bs-theme="dark"] .modern-schedule-item .time {
    color: #000000 !important;
    background: #ffffff;
    border: 2px solid #ffffff;
    text-shadow: none;
}

[data-bs-theme="dark"] .modern-schedule-item .subject {
    color: #ffffff;
}

[data-bs-theme="dark"] .modern-schedule-item .location {
    background: #ffffff;
    color: #000000 !important;
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

[data-bs-theme="dark"] .modern-next-card {
    background: #000000;
    border: 2px solid #333333;
    box-shadow: 0 18px 45px rgba(255, 255, 255, 0.1);
}

[data-bs-theme="dark"] .modern-next-card::before {
    background: linear-gradient(90deg, #ffffff 0%, #cccccc 50%, #ffffff 100%);
}

[data-bs-theme="dark"] .next-class-subject {
    color: #ffffff;
}

[data-bs-theme="dark"] .next-class-timer {
    background: #ffffff;
    color: #000000;
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

/* Responsive tweaks for schedule items */
@media (max-width: 992px) {
    .modern-schedule-item { 
        padding: 12px 15px; 
    }
    .modern-schedule-item .time { 
        min-width: 70px; 
        font-size: 0.9rem;
    }
    .modern-schedule-item .subject {
        font-size: 0.95rem;
    }
    .modern-schedule-item .room {
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .modern-schedule-item { 
        padding: 15px 12px;
        margin-bottom: 12px;
    }
    .modern-schedule-item .time { 
        min-width: 60px; 
        font-size: 0.9rem;
        font-weight: 600;
    }
    .modern-schedule-item .subject {
        font-size: 0.95rem;
        font-weight: 500;
    }
    .modern-schedule-item .room {
        font-size: 0.85rem;
        opacity: 0.9;
    }
}

@media (max-width: 576px) {
    .modern-schedule-item { 
        flex-direction: column; 
        align-items: flex-start;
        padding: 12px 10px;
        gap: 8px;
    }
    .modern-schedule-item .left { 
        gap: 8px;
        width: 100%;
    }
    .modern-schedule-item .time {
        min-width: auto;
        font-size: 0.9rem;
        background: rgba(124, 58, 237, 0.1);
        padding: 4px 8px;
        border-radius: 6px;
        color: var(--superior-purple);
        font-weight: 600;
    }
    .modern-schedule-item .subject {
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 4px;
    }
    .modern-schedule-item .room {
        font-size: 0.85rem;
        color: var(--text-secondary);
        font-weight: 500;
    }
    .next-class-meta { 
        flex-direction: column; 
        align-items: flex-start; 
        gap: 8px;
        width: 100%;
    }
}

/* Dark Mode Dashboard Class Selector */
[data-bs-theme="dark"] .dashboard-class-selector {
    background: #000000;
    border: 3px solid #333333;
    box-shadow: 0 15px 40px rgba(255, 255, 255, 0.1);
}

[data-bs-theme="dark"] .dashboard-class-selector::before {
    background: linear-gradient(90deg, #ffffff 0%, #cccccc 50%, #ffffff 100%);
}

[data-bs-theme="dark"] .dashboard-class-selector h5 {
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(255, 255, 255, 0.3);
}

[data-bs-theme="dark"] .dashboard-class-selector h5 i {
    color: #ffffff;
}

[data-bs-theme="dark"] .dashboard-class-selector select {
    background: #000000;
    border: 3px solid #333333;
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
}

[data-bs-theme="dark"] .dashboard-class-selector select:focus {
    border-color: #ffffff;
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.2);
    background: #000000;
}

[data-bs-theme="dark"] .dashboard-class-selector select option {
    background: #000000;
    color: #ffffff;
}

[data-bs-theme="dark"] #selectedClassInfo {
    background: #000000;
    border: 2px solid #333333;
}

[data-bs-theme="dark"] #selectedClassInfo small {
    color: #ffffff;
}

/* Mobile-first card layout improvements */
@media (max-width: 768px) {
    .modern-schedule-card {
        margin-bottom: 25px;
        border-radius: 18px;
    }
    
    .modern-schedule-card .card-title {
        border-radius: 18px 18px 0 0;
    }
}

@media (max-width: 576px) {
    .modern-schedule-card {
        margin-bottom: 20px;
        border-radius: 15px;
    }
    
    .modern-schedule-card .card-title {
        border-radius: 15px 15px 0 0;
        padding: 12px 15px;
    }
    
    /* Ensure proper card spacing in the grid */
    .row.mb-4 .col-12 {
        padding-left: 10px;
        padding-right: 10px;
    }
}

.dashboard-card .card-body {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 25px 20px;
    text-align: center;
}

.dashboard-card .card-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--superior-purple);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.dashboard-card .card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    line-height: 1.2;
    min-height: 2.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: none;
    border: none;
    padding: 0;
    text-shadow: none;
}

.dashboard-card .card-value {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 5px;
    background: linear-gradient(135deg, var(--superior-purple), var(--superior-light-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex-shrink: 0;
}

.dashboard-card .card-subtitle {
    font-size: 1rem;
    color: var(--success-color);
    font-weight: 600;
    margin-bottom: 5px;
    flex-shrink: 0;
}

.dashboard-card .card-count {
    font-size: 1rem;
    color: var(--info-color);
    font-weight: 600;
    margin-bottom: 8px;
    flex-shrink: 0;
}

.dashboard-card .card-description {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 8px;
    flex-shrink: 0;
}

.dashboard-card .btn {
    border-radius: 25px;
    padding: 8px 20px;
    font-weight: 600;
    border: none;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    flex-shrink: 0;
    margin-top: auto;
}

.dashboard-card .btn:hover {
    transform: scale(1.05);
}

/* Dark Theme Dashboard Cards */
[data-bs-theme="dark"] .dashboard-card {
    background: #000000;
    color: #ffffff;
    border: 2px solid #333333;
}

[data-bs-theme="dark"] .dashboard-card .card-title {
    color: #ffffff;
}

[data-bs-theme="dark"] .dashboard-card .card-icon {
    color: #ffffff;
}

[data-bs-theme="dark"] .dashboard-card .card-description {
    color: #cccccc;
}

[data-bs-theme="dark"] .university-logo-img {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.5)) brightness(1.1);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .dashboard-card {
        height: 220px;
    }
    
    .dashboard-card .card-body {
        padding: 20px 15px;
    }
    
    .dashboard-card .card-icon {
        font-size: 2rem;
    }
    
    .dashboard-card .card-value {
        font-size: 1.8rem;
    }
    
    .university-logo-img {
        height: 60px;
    }
    
    .university-name {
        font-size: 1.5rem;
    }
}

@media (max-width: 576px) {
    .dashboard-card {
        height: 200px;
    }
    
    .dashboard-card .card-title {
        font-size: 0.9rem;
        min-height: 2rem;
    }
    
    .dashboard-card .btn {
        padding: 6px 16px;
        font-size: 0.8rem;
    }
}

/* Search Bar Improvements */
.search-container {
    position: relative;
    margin-bottom: 30px;
}

.search-container .form-group {
    margin-bottom: 0;
}

.search-container label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.search-container .form-control {
    border-radius: 15px;
    border: 2px solid #e5e7eb;
    padding: 12px 20px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #ffffff;
    color: var(--text-primary);
}

.search-container .form-control:focus {
    border-color: var(--superior-purple);
    box-shadow: 0 0 0 3px rgba(142, 68, 173, 0.1);
    outline: none;
}

/* Dark Theme Search Bar */
[data-bs-theme="dark"] .search-container .form-control {
    background: #374151;
    border-color: #4b5563;
    color: var(--text-primary);
}

[data-bs-theme="dark"] .search-container .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Select2 Styling - Enhanced for both themes */
.select2-container--default .select2-selection--single {
    border-radius: 15px !important;
    border: 2px solid #e5e7eb !important;
    height: 50px !important;
    padding: 8px 15px !important;
    background: #ffffff !important;
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
    color: #111827 !important;
    line-height: 32px !important;
    padding-left: 5px !important;
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
    height: 46px !important;
    right: 10px !important;
}

.select2-container--default.select2-container--focus .select2-selection--single {
    border-color: var(--superior-purple) !important;
    box-shadow: 0 0 0 3px rgba(142, 68, 173, 0.1) !important;
}

.select2-dropdown {
    border-radius: 15px !important;
    border: 2px solid var(--superior-purple) !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1) !important;
    background: #ffffff !important;
}

.select2-container--default .select2-results__option {
    padding: 12px 15px !important;
    color: #111827 !important;
    background: #ffffff !important;
}

.select2-container--default .select2-results__option--highlighted[aria-selected] {
    background-color: var(--superior-purple) !important;
    color: white !important;
}

/* Dark Theme Select2 */
[data-bs-theme="dark"] .select2-container--default .select2-selection--single {
    background: #374151 !important;
    border-color: #4b5563 !important;
}

[data-bs-theme="dark"] .select2-container--default .select2-selection--single .select2-selection__rendered {
    color: #f9fafb !important;
}

[data-bs-theme="dark"] .select2-dropdown {
    background: #374151 !important;
    border-color: var(--primary-color) !important;
}

[data-bs-theme="dark"] .select2-container--default .select2-results__option {
    color: #f9fafb !important;
    background: #374151 !important;
}

[data-bs-theme="dark"] .select2-container--default .select2-results__option:hover {
    background: #4b5563 !important;
}

[data-bs-theme="dark"] .select2-container--default .select2-results__option--highlighted[aria-selected] {
    background-color: var(--primary-color) !important;
    color: white !important;
}

/* Clear Button Styling */
.btn-clear {
    border-radius: 15px;
    padding: 12px 25px;
    font-weight: 600;
    border: 2px solid #e5e7eb;
    background: #ffffff;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.btn-clear:hover {
    border-color: var(--danger-color);
    background: var(--danger-color);
    color: white;
    transform: translateY(-2px);
}

/* Enhanced Table Styling - Glassmorphism */
.table-container {
    border-radius: 0 0 20px 20px;
    overflow: hidden;
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.table {
    margin: 0;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.95rem;
    background: transparent;
}

/* Glassmorphism Table Header */
.table thead th {
    background: rgba(59, 130, 246, 0.2);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-weight: 700;
    text-align: center;
    padding: 20px 15px;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    position: relative;
}

.table tbody tr {
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.table tbody tr:hover {
    background: rgba(59, 130, 246, 0.1);
    backdrop-filter: blur(15px);
    transform: scale(1.01);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.2);
}

.table tbody td {
    padding: 18px 15px;
    vertical-align: middle;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-weight: 500;
    color: var(--text-primary);
    background: transparent;
}

/* Glassmorphism Day Column */
.table tbody td:first-child {
    background: rgba(79, 70, 229, 0.2);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-weight: 700;
    text-align: center;
    min-width: 120px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

/* Glassmorphism Time Columns */
.table tbody td:nth-child(2),
.table tbody td:nth-child(3) {
    background: rgba(16, 185, 129, 0.15);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-weight: 700;
    text-align: center;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

/* Glassmorphism Location Column */
.table tbody td:nth-child(4) {
    background: rgba(245, 158, 11, 0.15);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-weight: 700;
    font-size: 0.9rem;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

/* Glassmorphism Subject Column */
.table tbody td:nth-child(5) {
    background: rgba(59, 130, 246, 0.15);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-weight: 700;
    font-size: 0.9rem;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

/* Glassmorphism Groups/Teachers Column */
.table tbody td:nth-child(6) {
    background: rgba(139, 92, 246, 0.15);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-weight: 700;
    font-size: 0.9rem;
}

/* Dark Theme Glassmorphism - Enhanced Purple Theme */
[data-bs-theme="dark"] .table-container {
    background: linear-gradient(135deg, rgba(31, 41, 55, 0.4) 0%, rgba(55, 65, 81, 0.4) 100%);
    border: 2px solid rgba(187, 143, 206, 0.3);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

[data-bs-theme="dark"] .table thead th {
    background: linear-gradient(135deg, var(--superior-light-purple) 0%, #d7b3e0 100%);
    color: white;
    border-bottom: 3px solid rgba(187, 143, 206, 0.4);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

[data-bs-theme="dark"] .table tbody tr {
    background: rgba(31, 41, 55, 0.2);
    border-bottom: 2px solid rgba(187, 143, 206, 0.2);
}

[data-bs-theme="dark"] .table tbody tr:hover {
    background: linear-gradient(135deg, rgba(55, 65, 81, 0.6) 0%, rgba(75, 85, 99, 0.7) 100%);
    box-shadow: 0 8px 25px rgba(187, 143, 206, 0.2);
}

[data-bs-theme="dark"] .table tbody td {
    color: var(--text-primary);
}

[data-bs-theme="dark"] .table tbody td:first-child {
    background: linear-gradient(135deg, var(--superior-light-purple) 0%, #d7b3e0 100%);
    color: white;
    border-right: 3px solid rgba(255, 255, 255, 0.3);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

[data-bs-theme="dark"] .table tbody td:nth-child(2),
[data-bs-theme="dark"] .table tbody td:nth-child(3) {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(245, 237, 255, 0.95) 100%);
    color: #000000;
    border-right: 2px solid rgba(187, 143, 206, 0.3);
    text-shadow: none;
    font-weight: 700;
}

[data-bs-theme="dark"] .table tbody td:nth-child(4) {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(245, 237, 255, 0.95) 100%);
    color: #000000;
    border-right: 2px solid rgba(187, 143, 206, 0.3);
    font-weight: 700;
}

[data-bs-theme="dark"] .table tbody td:nth-child(5) {
    background: linear-gradient(135deg, rgba(245, 237, 255, 0.1) 0%, rgba(255, 252, 255, 0.15) 100%);
    color: var(--superior-light-purple);
    border-right: 2px solid rgba(187, 143, 206, 0.3);
}

[data-bs-theme="dark"] .table tbody td:nth-child(6) {
    background: linear-gradient(135deg, rgba(232, 218, 239, 0.15) 0%, rgba(245, 237, 255, 0.2) 100%);
    color: var(--superior-light-purple);
}

/* CGPA Calculator Enhanced Styles - Compact Version */
#cgpa-calculator {
    /* padding: 25px 0; */
    /* background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%); */
    border-radius: 20px;
    margin: 20px 0;
    /* border: 1px solid rgba(59, 130, 246, 0.1); */
}

#cgpa-calculator .container {
    padding: 0 20px;
}

#cgpa-calculator .card {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    margin-bottom: 20px;
}

#cgpa-calculator .card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: 15px 15px 0 0 !important;
    padding: 15px 20px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
}

#cgpa-calculator .card-body {
    padding: 20px;
}

#cgpa-calculator .form-control {
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(59, 130, 246, 0.2);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

#cgpa-calculator .form-control:focus {
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    color: var(--text-primary);
}

#cgpa-calculator .form-control::placeholder {
    color: rgba(107, 114, 128, 0.8);
}

#cgpa-calculator .form-group label {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.subject-entry {
    margin-bottom: 15px;
    padding: 18px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 12px;
    border: 2px solid rgba(59, 130, 246, 0.1);
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.subject-entry:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
}

.subject-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.remove-button {
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
    padding: 12px 20px;
    font-size: 0.9rem;
}

.remove-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(220, 53, 69, 0.3);
}

/* Dark Theme CGPA Calculator */
/* [data-bs-theme="dark"] #cgpa-calculator {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-color: rgba(59, 130, 246, 0.2);
} */

[data-bs-theme="dark"] #cgpa-calculator .card {
    background: rgba(31, 41, 55, 0.95);
    border-color: rgba(75, 85, 99, 0.3);
}

[data-bs-theme="dark"] #cgpa-calculator .form-control {
    background: rgba(55, 65, 81, 0.9);
    border-color: rgba(75, 85, 99, 0.5);
    color: var(--text-primary);
}

[data-bs-theme="dark"] #cgpa-calculator .form-control:focus {
    background: rgba(55, 65, 81, 1);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

[data-bs-theme="dark"] #cgpa-calculator .form-control::placeholder {
    color: rgba(209, 213, 219, 0.6);
}

[data-bs-theme="dark"] .subject-entry {
    background: rgba(55, 65, 81, 0.8);
    border-color: rgba(75, 85, 99, 0.3);
}

[data-bs-theme="dark"] .subject-entry:hover {
    background: rgba(55, 65, 81, 0.95);
    border-color: rgba(59, 130, 246, 0.4);
}

/* Results Section Enhancement - Compact */
.cgpa-results-cards {
    margin-bottom: 25px;
}

.cgpa-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 15px;
    color: white;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.cgpa-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
}

.cgpa-card.sgpa-card {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.cgpa-card.cgpa-card-main {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.cgpa-card .card-header {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 15px 15px 0 0;
    padding: 12px 16px;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
}

.cgpa-card .card-body {
    padding: 20px 16px;
}

.cgpa-card .card-title {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Results Table Enhancement - Compact */
.cgpa-results-table {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 15px;
    backdrop-filter: blur(10px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

[data-bs-theme="dark"] .cgpa-results-table {
    background: rgba(31, 41, 55, 0.95);
}

.grade-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Sidebar Footer */
.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Developer Info Styling - Footer Version */
.sidebar-footer .developer-info {
    text-align: center;
    padding: 20px 15px;
}

.developer-name {
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 600;
    display: block;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.social-link {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.2rem;
    transition: all 0.3s ease;
    text-decoration: none;
    padding: 5px;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    text-decoration: none;
}

.social-link:hover .fab.fa-linkedin {
    color: #0077b5;
}

.social-link:hover .fab.fa-github {
    color: #333;
}

[data-bs-theme="dark"] .social-link:hover .fab.fa-github {
    color: #ffffff;
}

/* Enhanced Day Selector Styles */
.day-selector-controls {
    background: linear-gradient(135deg, rgba(142, 68, 173, 0.05) 0%, rgba(187, 143, 206, 0.05) 100%);
    border: 1px solid rgba(142, 68, 173, 0.1);
    border-radius: 15px;
    padding: 25px;
    position: relative;
    overflow: hidden;
    margin-bottom: 20px;
}

.day-selector-controls::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--superior-purple), var(--superior-light-purple));
    border-radius: 15px 15px 0 0;
}

.day-selector-label {
    font-weight: 600;
    color: var(--superior-purple);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.day-selector-dropdown {
    border: 2px solid rgba(124, 58, 237, 0.2);
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 1rem;
    background: white;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(124, 58, 237, 0.1);
    width: 100%;
    min-width: 250px !important;
    max-width: none !important;
    white-space: nowrap !important;
    text-overflow: clip !important;
    overflow: visible !important;
    appearance: menulist;
    -webkit-appearance: menulist;
    -moz-appearance: menulist;
}

.day-selector-dropdown:focus {
    border-color: var(--superior-purple);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
    outline: none;
}

.day-selector-dropdown option {
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 1rem;
    white-space: nowrap;
    min-width: 120px;
    width: auto;
}

/* Ensure dropdown has proper z-index and positioning */
.day-selector-dropdown {
    position: relative;
    z-index: 10;
    min-width: 250px !important;
    max-width: none !important;
    text-overflow: clip !important;
    overflow: visible !important;
    white-space: nowrap !important;
}

.day-selector-dropdown:focus {
    z-index: 20;
}

/* Selected Day Badge */
#selected-day-name, #selected-section-name {
    background: linear-gradient(135deg, var(--superior-purple), var(--superior-light-purple)) !important;
    color: white !important;
    font-weight: 600 !important;
    font-size: 0.85rem !important;
    padding: 6px 12px !important;
    border-radius: 20px !important;
    border: none !important;
    box-shadow: 0 2px 8px rgba(142, 68, 173, 0.3) !important;
    display: inline-block !important;
    margin-left: 10px !important;
    animation: fadeInScale 0.3s ease !important;
    text-overflow: clip !important;
    white-space: nowrap !important;
    overflow: visible !important;
    min-width: auto !important;
    max-width: none !important;
}

/* Prevent any text truncation on day selector */
select.day-selector-dropdown, 
#day-selector,
.day-selector-dropdown {
    text-overflow: clip !important;
    overflow: visible !important;
    white-space: nowrap !important;
    min-width: 280px !important;
    max-width: none !important;
}

#selected-day-name.badge-light, #selected-section-name.badge-light {
    background: linear-gradient(135deg, var(--superior-purple), var(--superior-light-purple)) !important;
    color: white !important;
}

/* Day Schedule Card Title Enhancement */
#day-schedule-card .card-title, #next-class-card .card-title {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 5px;
}

#day-schedule-card .card-title i, #next-class-card .card-title i {
    color: var(--superior-purple);
}

/* Ensure proper spacing in card titles */
.card-title .badge {
    margin-left: auto;
    flex-shrink: 0;
}

/* Mobile-first improvements for Schedule by Day */
@media (max-width: 768px) {
    #day-schedule-card .card-title {
        padding: 15px 20px;
        font-size: 1rem;
        text-align: center;
        justify-content: center;
    }
    
    #day-schedule-card .card-title i {
        margin-right: 8px;
    }
    
    .modern-schedule-card .card-body {
        padding: 20px 15px;
    }
    
    .day-selector-controls {
        padding: 20px 15px;
    }
    
    .day-selector-label {
        text-align: center;
        margin-bottom: 12px;
        font-size: 0.95rem;
    }
    
    .day-selector-dropdown {
        margin-bottom: 12px;
    }
    
    .btn-today-small {
        width: 100%;
        margin-top: 0;
    }
}

@media (max-width: 576px) {
    #day-schedule-card .card-title {
        padding: 12px 15px;
        font-size: 0.95rem;
    }
    
    .modern-schedule-card .card-body {
        padding: 15px 12px;
    }
    
    .day-selector-controls {
        padding: 15px 12px;
    }
    
    .day-selector-label {
        font-size: 0.9rem;
        margin-bottom: 10px;
    }
    
    .day-selector-dropdown {
        font-size: 16px; /* Prevent zoom on iOS */
        padding: 14px 16px;
    }
    
    .btn-today-small {
        padding: 14px 16px;
        font-size: 16px;
    }
    
    /* Improve text alignment in day-schedule-body */
    #day-schedule-body .text-center h5 {
        font-size: 1.1rem;
        line-height: 1.4;
    }
    
    #day-schedule-body .text-center p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    #day-schedule-body .text-center i {
        margin-bottom: 15px;
    }
}

@keyframes fadeInScale {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Enhanced Next Class Timer */
.next-class-timer-large {
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    color: white;
    padding: 12px 20px;
    border-radius: 25px;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(142, 68, 173, 0.4);
    border: none;
    min-width: 120px;
    text-align: center;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 15px rgba(142, 68, 173, 0.4);
    }
    50% {
        box-shadow: 0 6px 20px rgba(142, 68, 173, 0.6);
    }
    100% {
        box-shadow: 0 4px 15px rgba(142, 68, 173, 0.4);
    }
}

@keyframes pulse-red {
    0% {
        box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
    }
    50% {
        box-shadow: 0 6px 20px rgba(239, 68, 68, 0.8);
        transform: scale(1.05);
    }
    100% {
        box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
        transform: scale(1);
    }
}

/* Small Today Button */
.btn-today-small {
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%);
    border: none;
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(142, 68, 173, 0.3);
    position: relative;
    overflow: hidden;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

.btn-today-small::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-today-small:hover::before {
    left: 100%;
}

.btn-today-small:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(142, 68, 173, 0.4);
    color: white;
}

.btn-today-small:active {
    transform: translateY(0);
}

.btn-today-small i {
    margin-right: 6px;
}

/* Dark theme adjustments */
[data-bs-theme="dark"] .day-selector-controls {
    background: linear-gradient(135deg, rgba(142, 68, 173, 0.1) 0%, rgba(187, 143, 206, 0.1) 100%);
    border-color: rgba(142, 68, 173, 0.2);
}

[data-bs-theme="dark"] .day-selector-dropdown {
    background: var(--light-color);
    border-color: rgba(142, 68, 173, 0.3);
    color: var(--text-primary);
}

[data-bs-theme="dark"] .day-selector-dropdown option {
    background: var(--light-color);
    color: var(--text-primary);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .day-selector-controls .row {
        margin: 0;
    }
    
    .day-selector-controls .col-sm-12 {
        padding-left: 0;
        padding-right: 0;
    }
    
    .day-selector-dropdown {
        min-width: 100%;
        max-width: 100%;
        font-size: 1rem;
        padding: 14px 16px;
        text-overflow: clip;
        overflow: visible;
        width: 100%;
    }
    
    .btn-today-small {
        width: 100%;
        max-width: 100%;
        margin-top: 10px;
        padding: 14px 16px;
        font-size: 1rem;
    }
    
    .day-selector-label {
        font-size: 1rem;
        margin-bottom: 10px;
        text-align: left;
    }
    
    /* Stack controls vertically on mobile */
    .day-selector-controls .row.align-items-end {
        flex-direction: column;
        align-items: stretch !important;
    }
    
    .day-selector-controls .col-sm-12.col-md-8,
    .day-selector-controls .col-sm-12.col-md-4 {
        flex: 1;
        max-width: 100%;
        padding-left: 0;
        padding-right: 0;
    }
}

@media (max-width: 576px) {
    .day-selector-controls {
        padding: 15px 12px;
        margin-bottom: 15px;
    }
    
    .day-selector-dropdown {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 16px;
        min-width: 100%;
        max-width: 100%;
        width: 100%;
        text-overflow: clip;
        white-space: nowrap;
        margin-bottom: 12px;
    }
    
    .btn-today-small {
        padding: 16px;
        font-size: 16px;
        width: 100%;
        margin-top: 0;
    }
    
    .day-selector-label {
        font-size: 0.95rem;
        margin-bottom: 12px;
        text-align: center;
    }
    
    /* Improve card spacing on very small screens */
    .modern-schedule-card {
        margin-bottom: 20px;
    }
    
    .modern-schedule-card .card-body {
        padding: 15px 12px;
    }
    
    /* Better text alignment for placeholder content */
    #day-schedule-body .text-center {
        padding: 20px 10px;
    }
    
    #day-schedule-body .text-center h5 {
        font-size: 1.1rem;
        margin-bottom: 10px;
        line-height: 1.3;
    }
    
    #day-schedule-body .text-center p {
        font-size: 0.9rem;
        line-height: 1.4;
        margin-bottom: 0;
    }
    
    #day-schedule-body .text-center i {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }
}

/* Ensure dropdown options are fully visible */
@media (min-width: 769px) {
    .day-selector-dropdown {
        min-width: 280px;
        max-width: none;
    }
}

@media (max-width: 768px) and (min-width: 577px) {
    .day-selector-dropdown {
        min-width: 250px;
        max-width: none;
    }
}

@media (max-width: 576px) {
    .day-selector-dropdown {
        min-width: 100%;
        max-width: none;
        width: 100%;
    }
}

/* Admin Panel Specific Styles */
.admin-panel-link {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 10px;
    padding-top: 10px;
}

.admin-panel-link a {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.3);
}

.admin-panel-link a:hover, .admin-panel-link a.active {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    border-color: #e74c3c;
}

.admin-panel-link a i {
    color: #e74c3c;
}

.admin-panel-link a:hover i, .admin-panel-link a.active i {
    color: white;
}

/* Admin Panel Cards */
#admin-panel .card {
    margin-bottom: 25px;
    border: none;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    background: white;
}

#admin-panel .card-header {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    padding: 15px 20px;
    border-bottom: none;
    font-weight: 600;
    font-size: 1.1rem;
}

#admin-panel .card-header h5 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

#admin-panel .card-header i {
    font-size: 1.2rem;
    opacity: 0.9;
}

#admin-panel .card-body {
    padding: 25px;
}

/* Admin Form Styling */
#admin-panel .form-group {
    margin-bottom: 20px;
}

#admin-panel .form-group label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: block;
}

#admin-panel .form-control {
    border-radius: 10px;
    border: 2px solid #e5e7eb;
    padding: 12px 16px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    background: white;
    width: 100%;
}

#admin-panel .form-control:focus {
    border-color: #e74c3c;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
    outline: none;
}

#admin-panel .form-control-file {
    border: 2px dashed #e5e7eb;
    border-radius: 10px;
    padding: 15px;
    background: #f8fafc;
    transition: all 0.3s ease;
    cursor: pointer;
}

#admin-panel .form-control-file:hover {
    border-color: #e74c3c;
    background: #fef2f2;
}

/* Admin Buttons */
#admin-panel .btn {
    border-radius: 10px;
    padding: 12px 24px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
}

#admin-panel .btn-primary {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

#admin-panel .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
    background: linear-gradient(135deg, #2980b9 0%, #21618c 100%);
}

#admin-panel .btn-success {
    background: linear-gradient(135deg, #27ae60 0%, #229954 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

#admin-panel .btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(39, 174, 96, 0.4);
    background: linear-gradient(135deg, #229954 0%, #1e8449 100%);
}

#admin-panel .btn-danger {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

#admin-panel .btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(231, 76, 60, 0.4);
    background: linear-gradient(135deg, #c0392b 0%, #a93226 100%);
}

/* Admin Messages */
.admin-message {
    padding: 12px 16px;
    border-radius: 8px;
    margin-top: 15px;
    font-weight: 500;
}

.admin-message.success {
    background: linear-gradient(135deg, #d5f4e6 0%, #c8e6c9 100%);
    color: #1b5e20;
    border: 1px solid #4caf50;
}

.admin-message.error {
    background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
    color: #c62828;
    border: 1px solid #f44336;
}

.admin-message.info {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    color: #1565c0;
    border: 1px solid #2196f3;
}

.admin-message.warning {
    background: linear-gradient(135deg, #fff8e1 0%, #ffecb3 100%);
    color: #e65100;
    border: 1px solid #ff9800;
}

/* Loading States for Admin */
#admin-panel .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

#admin-panel .btn.loading {
    position: relative;
    /* Removed color: transparent to show "Loading..." text */
}

#admin-panel .btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    color: white;
}

/* Prevent double loading animation in admin panel */
#admin-panel .btn.loading .loading {
    display: none;
}

/* Dark Theme Admin Panel */
[data-bs-theme="dark"] #admin-panel .card {
    background: #374151;
    color: var(--text-primary);
}

[data-bs-theme="dark"] #admin-panel .card-header {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
}

[data-bs-theme="dark"] #admin-panel .form-control {
    background: #4b5563;
    border-color: #6b7280;
    color: var(--text-primary);
}

[data-bs-theme="dark"] #admin-panel .form-control:focus {
    border-color: #dc2626;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

[data-bs-theme="dark"] #admin-panel .form-control-file {
    background: #4b5563;
    border-color: #6b7280;
    color: var(--text-primary);
}

[data-bs-theme="dark"] #admin-panel .form-control-file:hover {
    border-color: #dc2626;
    background: #552525;
}

[data-bs-theme="dark"] .admin-message.success {
    background: linear-gradient(135deg, #064e3b 0%, #065f46 100%);
    color: #34d399;
    border-color: #10b981;
}

[data-bs-theme="dark"] .admin-message.error {
    background: linear-gradient(135deg, #7f1d1d 0%, #991b1b 100%);
    color: #fca5a5;
    border-color: #ef4444;
}

[data-bs-theme="dark"] .admin-message.info {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
    color: #93c5fd;
    border-color: #3b82f6;
}

[data-bs-theme="dark"] .admin-message.warning {
    background: linear-gradient(135deg, #92400e 0%, #b45309 100%);
    color: #fbbf24;
    border-color: #f59e0b;
}

/* Responsive Admin Panel */
@media (max-width: 768px) {
    #admin-panel .card-body {
        padding: 15px;
    }
    
    #admin-panel .row {
        margin: 0 -5px;
    }
    
    #admin-panel .col-md-6 {
        padding: 0 5px;
        margin-bottom: 15px;
    }
    
    #admin-panel .btn {
        width: 100%;
        margin-bottom: 10px;
    }
}

/* Animation for admin section transitions */
#admin-panel .content-section {
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Badge styling for admin status */
.admin-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.admin-status-badge.authenticated {
    background: linear-gradient(135deg, #d5f4e6 0%, #c8e6c9 100%);
    color: #1b5e20;
    border: 1px solid #4caf50;
}

.admin-status-badge.unauthenticated {
    background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
    color: #c62828;
    border: 1px solid #f44336;
}

.admin-status-badge i {
    font-size: 0.9rem;
}

/* About Section Styles */
.about-card {
    border-radius: 20px;
    border: 2px solid rgba(168, 85, 247, 0.2);
    background: linear-gradient(135deg, rgba(237, 233, 254, 0.95) 0%, rgba(250, 245, 255, 0.95) 100%);
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.15);
    backdrop-filter: blur(15px);
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(124, 58, 237, 0.25);
}

.about-card .card-header {
    background: var(--superior-gradient);
    color: white;
    font-weight: 600;
    border-radius: 18px 18px 0 0;
    border-bottom: none;
    padding: 15px 20px;
}

.about-card .card-header h5 {
    margin: 0;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
}

.about-card .card-header i {
    color: rgba(255, 255, 255, 0.9);
}

.about-card .card-body {
    padding: 25px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(168, 85, 247, 0.1);
}

.info-item:last-child {
    border-bottom: none;
}

.info-item strong {
    color: var(--superior-purple);
    font-weight: 600;
}

.info-item span {
    color: var(--text-secondary);
    font-weight: 500;
}

.developer-profile, .contributor-profile {
    text-align: center;
    padding: 10px;
}

.developer-profile h6, .contributor-profile h6 {
    color: var(--superior-purple);
    font-weight: 700;
    margin-bottom: 5px;
    font-size: 1.2rem;
}

.developer-profile p, .contributor-profile p {
    font-size: 0.95rem;
    margin-bottom: 15px;
}

.social-links {
    margin-bottom: 15px;
}

.social-links .btn {
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.social-links .btn-outline-primary {
    border-color: var(--superior-purple);
    color: var(--superior-purple);
    background: transparent;
}

.social-links .btn-outline-primary:hover {
    background: var(--superior-purple);
    border-color: var(--superior-purple);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

.social-links .btn-outline-dark {
    border-color: var(--superior-dark-purple);
    color: var(--superior-dark-purple);
    background: transparent;
}

.social-links .btn-outline-dark:hover {
    background: var(--superior-dark-purple);
    border-color: var(--superior-dark-purple);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(91, 33, 182, 0.3);
}

.contributions {
    text-align: left;
    background: rgba(168, 85, 247, 0.1);
    padding: 15px;
    border-radius: 12px;
}

.contribution-list {
    list-style: none;
    padding: 0;
    margin: 8px 0 0 0;
}

.contribution-list li {
    padding: 4px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    position: relative;
    padding-left: 20px;
}

.contribution-list li::before {
    content: '•';
    color: var(--superior-purple);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.tech-list {
    list-style: none;
    padding: 0;
}

.tech-list li {
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
    position: relative;
    padding-left: 20px;
}

.tech-list li::before {
    content: '▶';
    color: var(--superior-purple);
    font-size: 0.8rem;
    position: absolute;
    left: 0;
    top: 8px;
}

/* Mobile responsiveness for dashboard */
@media (max-width: 991px) {
    .dashboard-class-selector {
        margin-bottom: 20px;
        height: auto;
        min-height: 180px;
    }
    
    .modern-next-card {
        height: auto;
        min-height: 180px;
    }
    
    .modern-next-card .card-body {
        padding: 20px;
    }
    
    .dashboard-card {
        height: 200px;
        margin-bottom: 20px;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: 0 10px;
    }
    
    .container-fluid {
        padding: 0 10px;
    }
    
    .dashboard-class-selector,
    .modern-next-card {
        margin-bottom: 15px;
        height: auto;
        min-height: 160px;
    }
    
    .dashboard-class-selector h5 {
        font-size: 1.1rem;
        margin-bottom: 15px;
    }
    
    .dashboard-class-selector select {
        font-size: 1rem;
        padding: 12px 15px;
    }
    
    .modern-next-card .card-body {
        padding: 15px;
    }
    
    .next-class-timer {
        min-width: 140px;
        padding: 12px 16px;
        font-size: 1rem;
    }
    
    .dashboard-card {
        height: 180px;
        margin-bottom: 15px;
    }
    
    .dashboard-card .card-body {
        padding: 15px 10px;
    }
    
    .dashboard-card .card-icon {
        font-size: 2rem;
        margin-bottom: 8px;
    }
    
    .dashboard-card .card-title {
        font-size: 0.95rem;
        min-height: 2rem;
    }
    
    .page-title {
        font-size: 1.3rem;
        margin-bottom: 20px;
        text-align: center;
    }
}

/* Mobile responsiveness for About section */
@media (max-width: 768px) {
    .about-card .card-body {
        padding: 20px 15px;
    }
    
    .info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
        padding: 10px 0;
    }
    
    .developer-profile, .contributor-profile {
        margin-bottom: 25px;
    }
    
    .social-links .btn {
        margin-bottom: 8px;
        width: 100%;
    }
    
    .contributions {
        margin-top: 15px;
    }
}

/* Dark theme for About section */
[data-bs-theme="dark"] .about-card {
    background: linear-gradient(135deg, rgba(55, 65, 81, 0.95) 0%, rgba(31, 41, 55, 0.95) 100%);
    border-color: rgba(168, 85, 247, 0.3);
}

[data-bs-theme="dark"] .info-item {
    border-bottom-color: rgba(168, 85, 247, 0.2);
}

[data-bs-theme="dark"] .info-item span {
    color: #cccccc;
}

[data-bs-theme="dark"] .contributions {
    background: #000000;
    border: 1px solid #333333;
}

[data-bs-theme="dark"] .contribution-list li,
[data-bs-theme="dark"] .tech-list li {
    color: #cccccc;
}

/* Dark Theme Sidebar - Premium Design */
[data-bs-theme="dark"] .sidebar {
    background: linear-gradient(180deg, var(--dark-bg-secondary) 0%, var(--dark-bg-primary) 100%);
    border-right: 1px solid var(--dark-surface);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.5);
}

[data-bs-theme="dark"] .sidebar-header {
    background: linear-gradient(135deg, var(--dark-surface) 0%, var(--dark-surface-hover) 100%);
    color: var(--text-primary);
    border-bottom: 1px solid var(--dark-surface);
    position: relative;
}

[data-bs-theme="dark"] .sidebar-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20px;
    right: 20px;
    height: 2px;
    background: var(--superior-gradient);
    border-radius: 2px;
}

[data-bs-theme="dark"] .sidebar-header h4 {
    color: var(--text-primary);
    background: var(--superior-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-bs-theme="dark"] .sidebar-menu a {
    color: rgba(240, 246, 252, 0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-bs-theme="dark"] .sidebar-menu a:hover,
[data-bs-theme="dark"] .sidebar-menu a.active {
    background: linear-gradient(135deg, var(--superior-purple) 0%, var(--superior-light-purple) 100%) !important;
    color: white !important;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
    border-left: 3px solid var(--superior-light-purple);
}

/* Dark Theme Logo Color Consistency */
[data-bs-theme="dark"] .university-nav-logo,
[data-bs-theme="dark"] .sidebar-logo {
    filter: brightness(0) invert(1);
}

/* Dark Theme About Section */
[data-bs-theme="dark"] .about-card {
    background: #000000;
    border-color: #333333;
}

[data-bs-theme="dark"] .about-card .card-header {
    background: #ffffff;
    color: #000000;
}

/* Dark Theme Day Selector */
[data-bs-theme="dark"] .day-selector-dropdown {
    background: #000000;
    border-color: #333333;
    color: #ffffff;
}

[data-bs-theme="dark"] .day-selector-dropdown option {
    background: #000000;
    color: #ffffff;
}

/* Dark Theme Buttons - Premium Design */
[data-bs-theme="dark"] .btn-primary {
    background: var(--superior-gradient);
    border: 1px solid var(--superior-purple);
    color: white;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-bs-theme="dark"] .btn-primary:hover {
    background: linear-gradient(135deg, var(--superior-light-purple) 0%, var(--superior-purple) 100%);
    border-color: var(--superior-light-purple);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(139, 92, 246, 0.4);
}

[data-bs-theme="dark"] .btn-secondary {
    background: var(--dark-surface);
    border: 1px solid var(--dark-surface-hover);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

[data-bs-theme="dark"] .btn-secondary:hover {
    background: var(--dark-surface-hover);
    border-color: var(--superior-purple);
    color: var(--text-primary);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

[data-bs-theme="dark"] .theme-toggle {
    background: var(--dark-surface);
    border: 1px solid var(--dark-surface-hover);
    color: var(--superior-light-purple);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-bs-theme="dark"] .theme-toggle:hover {
    background: var(--dark-surface-hover);
    color: var(--superior-purple);
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(139, 92, 246, 0.3);
}

/* Dark Theme Page Titles */
[data-bs-theme="dark"] .page-title {
    color: #ffffff;
}

[data-bs-theme="dark"] .page-title::after {
    background: #ffffff;
}

/* Dark Theme Card Titles */
[data-bs-theme="dark"] .card-title {
    color: #ffffff !important;
}

[data-bs-theme="dark"] .card-title i {
    color: #ffffff !important;
}

/* Dark Theme Form Labels */
[data-bs-theme="dark"] .form-label,
[data-bs-theme="dark"] label {
    color: #ffffff !important;
}

/* Dark Theme Text Elements */
[data-bs-theme="dark"] .text-primary {
    color: #ffffff !important;
}

[data-bs-theme="dark"] .text-muted {
    color: #cccccc !important;
}

/* Dark Theme Table Headers */
[data-bs-theme="dark"] .table th {
    background: #000000;
    color: #ffffff;
    border-color: #333333;
}

[data-bs-theme="dark"] .table td {
    background: #000000;
    color: #ffffff;
    border-color: #333333;
}

/* Dark Theme Badges */
[data-bs-theme="dark"] .badge {
    background: #ffffff !important;
    color: #000000 !important;
}

/* Dark Theme Icons */
[data-bs-theme="dark"] .fa,
[data-bs-theme="dark"] .fas,
[data-bs-theme="dark"] .far,
[data-bs-theme="dark"] .fab {
    color: #ffffff;
}

/* Dark Theme Select2 Dropdown */
[data-bs-theme="dark"] .select2-container--default .select2-selection--single {
    background: #000000;
    border-color: #333333;
    color: #ffffff;
}

[data-bs-theme="dark"] .select2-container--default .select2-selection--single .select2-selection__rendered {
    color: #ffffff;
}

[data-bs-theme="dark"] .select2-dropdown {
    background: #000000;
    border-color: #333333;
}

[data-bs-theme="dark"] .select2-results__option {
    background: #000000;
    color: #ffffff;
}

[data-bs-theme="dark"] .select2-results__option--highlighted {
    background: #333333;
    color: #ffffff;
}

/* Dark Theme Content Sections */
[data-bs-theme="dark"] .content-section {
    background: #000000;
    color: #ffffff;
}

[data-bs-theme="dark"] .content-container {
    background: #000000 !important;
    color: #ffffff;
}

/* Dark Theme Search Containers */
[data-bs-theme="dark"] .search-container label {
    color: #ffffff !important;
}

[data-bs-theme="dark"] .search-container .form-control {
    background: #000000;
    border: 2px solid #333333;
    color: #ffffff;
}

[data-bs-theme="dark"] .search-container .btn {
    background: #ffffff;
    border-color: #ffffff;
    color: #000000;
}

[data-bs-theme="dark"] .search-container .btn:hover {
    background: #cccccc;
    border-color: #cccccc;
    color: #000000;
}

/* Dark Theme CGPA Calculator */
[data-bs-theme="dark"] .cgpa-container {
    background: #000000;
    color: #ffffff;
}

[data-bs-theme="dark"] .cgpa-form {
    background: #000000;
    border: 2px solid #333333;
}

[data-bs-theme="dark"] .subject-entry {
    background: #000000;
    border: 1px solid #333333;
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 15px;
}

[data-bs-theme="dark"] .subject-label {
    color: #ffffff !important;
}

[data-bs-theme="dark"] .cgpa-results-cards .card {
    background: #000000;
    border: 2px solid #333333;
}

[data-bs-theme="dark"] .cgpa-card .card-header {
    background: #ffffff;
    color: #000000;
    border-bottom: 2px solid #333333;
}

[data-bs-theme="dark"] .cgpa-card .card-title {
    color: #000000 !important;
}

/* Dark Theme Admin Panel */
[data-bs-theme="dark"] .admin-container {
    background: #000000;
    color: #ffffff;
}

[data-bs-theme="dark"] .admin-login-form {
    background: #000000;
    border: 2px solid #333333;
}

[data-bs-theme="dark"] .admin-dashboard-section {
    background: #000000;
    color: #ffffff;
}

/* Dark Theme Timetable Display */
[data-bs-theme="dark"] .teacher-timetable-container,
[data-bs-theme="dark"] .section-timetable-container {
    background: #000000;
    color: #ffffff;
}

[data-bs-theme="dark"] .timetable-row {
    background: #000000;
    color: #ffffff;
    border-bottom: 1px solid #333333;
}

[data-bs-theme="dark"] .timetable-row:hover {
    background: #111111;
}

/* Dark Theme Modal */
[data-bs-theme="dark"] .modal-content {
    background: #000000;
    border: 2px solid #333333;
    color: #ffffff;
}

[data-bs-theme="dark"] .modal-header {
    background: #ffffff;
    color: #000000;
    border-bottom: 2px solid #333333;
}

[data-bs-theme="dark"] .modal-body {
    background: #000000;
    color: #ffffff;
}

/* Dark Theme Buttons - Override All Purple Buttons */
[data-bs-theme="dark"] .btn,
[data-bs-theme="dark"] .btn-primary,
[data-bs-theme="dark"] .btn-secondary,
[data-bs-theme="dark"] .btn-info,
[data-bs-theme="dark"] .btn-success,
[data-bs-theme="dark"] .btn-warning,
[data-bs-theme="dark"] .btn-danger {
    background: #ffffff !important;
    border-color: #ffffff !important;
    color: #000000 !important;
}

[data-bs-theme="dark"] .btn:hover,
[data-bs-theme="dark"] .btn-primary:hover,
[data-bs-theme="dark"] .btn-secondary:hover,
[data-bs-theme="dark"] .btn-info:hover,
[data-bs-theme="dark"] .btn-success:hover,
[data-bs-theme="dark"] .btn-warning:hover,
[data-bs-theme="dark"] .btn-danger:hover {
    background: #cccccc !important;
    border-color: #cccccc !important;
    color: #000000 !important;
}

[data-bs-theme="dark"] .social-links .btn-outline-primary {
    border-color: var(--superior-purple) !important;
    color: var(--superior-purple) !important;
    background: transparent !important;
}

[data-bs-theme="dark"] .social-links .btn-outline-primary:hover {
    background: var(--superior-purple) !important;
    border-color: var(--superior-purple) !important;
    color: #ffffff !important;
}

[data-bs-theme="dark"] .social-links .btn-outline-dark {
    border-color: var(--superior-light-purple) !important;
    color: var(--superior-light-purple) !important;
    background: transparent !important;
}

[data-bs-theme="dark"] .social-links .btn-outline-dark:hover {
    background: var(--superior-light-purple) !important;
    border-color: var(--superior-light-purple) !important;
    color: #ffffff !important;
}

/* Dark Theme Card Icons - Override Purple Icons */
[data-bs-theme="dark"] .card-icon,
[data-bs-theme="dark"] .dashboard-card .card-icon {
    color: #ffffff !important;
}

/* Dark Theme Purple Text Elements */
[data-bs-theme="dark"] h1, [data-bs-theme="dark"] h2, [data-bs-theme="dark"] h3, 
[data-bs-theme="dark"] h4, [data-bs-theme="dark"] h5, [data-bs-theme="dark"] h6 {
    color: #ffffff !important;
}

/* Dark Theme Links */
[data-bs-theme="dark"] a {
    color: #ffffff !important;
}

[data-bs-theme="dark"] a:hover {
    color: #cccccc !important;
}

/* Dark Theme Purple Backgrounds Override */
[data-bs-theme="dark"] [style*="background"] {
    background: #000000 !important;
}

[data-bs-theme="dark"] [style*="color: var(--superior-purple)"] {
    color: #ffffff !important;
}

/* Dark Theme Day Selector Label */
[data-bs-theme="dark"] .day-selector-label {
    color: #ffffff !important;
}

/* Dark Theme Time Elements */
[data-bs-theme="dark"] .time-element,
[data-bs-theme="dark"] .time-badge {
    background: #ffffff !important;
    color: #000000 !important;
}

/* Dark Theme Form Switch */
[data-bs-theme="dark"] .form-switch .form-check-input {
    background: #333333;
    border-color: #ffffff;
}

[data-bs-theme="dark"] .form-switch .form-check-input:checked {
    background: #ffffff;
    border-color: #ffffff;
}

/* Dark Theme Complete Purple Override - All Elements */
[data-bs-theme="dark"] * {
    border-color: #333333 !important;
}

[data-bs-theme="dark"] .content-section h2,
[data-bs-theme="dark"] .page-title,
[data-bs-theme="dark"] .card-title,
[data-bs-theme="dark"] .section-title {
    color: #ffffff !important;
}

/* Dark Theme Teacher and Section Timetable Containers */
[data-bs-theme="dark"] #teacher-timetable-container,
[data-bs-theme="dark"] #section-timetable-container,
[data-bs-theme="dark"] .teacher-timetable-container,
[data-bs-theme="dark"] .section-timetable-container {
    background: #000000 !important;
    color: #ffffff !important;
}

/* Dark Theme Search Containers */
[data-bs-theme="dark"] .search-container {
    background: #000000 !important;
    color: #ffffff !important;
}

[data-bs-theme="dark"] .search-container label {
    color: #ffffff !important;
}

/* Dark Theme Select Dropdowns */
[data-bs-theme="dark"] select,
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] #teacher-search,
[data-bs-theme="dark"] #section-search {
    background: #333333 !important;
    color: #ffffff !important;
    border-color: #ffffff !important;
}

[data-bs-theme="dark"] select option {
    background: #333333 !important;
    color: #ffffff !important;
}

/* Dark Theme Clear Buttons */
[data-bs-theme="dark"] .btn-clear {
    background: #ffffff !important;
    color: #000000 !important;
    border-color: #ffffff !important;
}

[data-bs-theme="dark"] .btn-clear:hover {
    background: #cccccc !important;
    color: #000000 !important;
}

/* Dark Theme Text Muted Elements */
[data-bs-theme="dark"] .text-muted {
    color: #ffffff !important;
}

/* Dark Theme Info Messages */
[data-bs-theme="dark"] .text-center.text-muted p {
    color: #ffffff !important;
}

/* Dark Theme All Borders to Prevent Purple */
[data-bs-theme="dark"] .card,
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .btn,
[data-bs-theme="dark"] .content-container,
[data-bs-theme="dark"] .search-container {
    border-color: #333333 !important;
}

/* Dark Theme Override Any Remaining Purple Gradients */
[data-bs-theme="dark"] .table thead th,
[data-bs-theme="dark"] .table tbody td:first-child {
    background: #ffffff !important;
    color: #000000 !important;
    border-color: #333333 !important;
}

/* Dark Theme Override Purple Text Colors */
[data-bs-theme="dark"] .table tbody td:nth-child(2),
[data-bs-theme="dark"] .table tbody td:nth-child(3),
[data-bs-theme="dark"] .table tbody td:nth-child(4) {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(245, 237, 255, 0.95) 100%) !important;
    color: #000000 !important;
    font-weight: 700 !important;
}

[data-bs-theme="dark"] .table tbody td:nth-child(5),
[data-bs-theme="dark"] .table tbody td:nth-child(6) {
    color: #ffffff !important;
}

/* Dark Theme Ensure All Text is White */
[data-bs-theme="dark"] p,
[data-bs-theme="dark"] span,
[data-bs-theme="dark"] div,
[data-bs-theme="dark"] label,
[data-bs-theme="dark"] small,
[data-bs-theme="dark"] strong,
[data-bs-theme="dark"] em {
    color: #ffffff !important;
}

/* Dark Theme Fix Any Tab-like Elements */
[data-bs-theme="dark"] .nav-tabs .nav-link,
[data-bs-theme="dark"] .nav-pills .nav-link {
    background: #333333 !important;
    color: #ffffff !important;
    border-color: #ffffff !important;
}

[data-bs-theme="dark"] .nav-tabs .nav-link.active,
[data-bs-theme="dark"] .nav-pills .nav-link.active {
    background: #ffffff !important;
    color: #000000 !important;
    border-color: #ffffff !important;
}

/* Update Banner Styles - Enhanced Banner Design */
.update-banner {
    background: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #c084fc 100%);
    color: white;
    padding: 12px 0;
    position: relative;
    border-bottom: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 0 0 20px 20px;
    box-shadow: 0 6px 25px rgba(124, 58, 237, 0.3);
    transform: translateY(-100%);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-top: none;
    margin-bottom: 20px;
    overflow: hidden;
}

.update-banner.banner-visible {
    transform: translateY(0);
    opacity: 1;
}

.update-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: banner-shimmer 6s infinite;
}

@keyframes banner-shimmer {
    0% { left: -100%; }
    50% { left: 100%; }
    100% { left: -100%; }
}

.update-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    animation: banner-glow 3s ease-in-out infinite alternate;
}

@keyframes banner-glow {
    0% { opacity: 0.3; }
    100% { opacity: 0.8; }
}

.update-banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    text-align: center;
    padding: 0 25px;
    position: relative;
    z-index: 2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.update-banner-content i {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    opacity: 1;
    flex-shrink: 0;
    animation: icon-pulse 2s ease-in-out infinite;
}

@keyframes icon-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Enhanced Mobile-first banner styles */
@media (max-width: 768px) {
    .update-banner {
        padding: 10px 0;
        border-radius: 0 0 16px 16px;
        box-shadow: 0 4px 20px rgba(124, 58, 237, 0.25);
        margin-bottom: 15px;
    }

    .update-banner-content {
        font-size: 0.9rem;
        gap: 8px;
        padding: 0 20px;
        font-weight: 600;
    }

    .update-banner-content i {
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .update-banner {
        padding: 8px 0;
        border-radius: 0 0 14px 14px;
        margin-bottom: 12px;
    }

    .update-banner-content {
        font-size: 0.85rem;
        gap: 7px;
        padding: 0 16px;
        flex-wrap: nowrap;
        justify-content: center;
    }

    .update-banner-content i {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .update-banner {
        padding: 6px 0;
        border-radius: 0 0 12px 12px;
        margin-bottom: 10px;
    }

    .update-banner-content {
        font-size: 0.8rem;
        gap: 6px;
        padding: 0 14px;
    }

    .update-banner-content i {
        font-size: 0.8rem;
    }
}/* Mini Loader Animation for Tab Switching */
.mini-loader {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    display: none;
}

.mini-loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(124, 58, 237, 0.2);
    border-top: 3px solid var(--superior-purple);
    border-radius: 50%;
    animation: mini-spin 1s linear infinite;
}

@keyframes mini-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Mobile-first mini loader */
@media (max-width: 768px) {
    .mini-loader-spinner {
        width: 32px;
        height: 32px;
        border-width: 2px;
    }
}

@media (max-width: 576px) {
    .mini-loader-spinner {
        width: 28px;
        height: 28px;
        border-width: 2px;
    }
}

/* ============================================
   MODERN ABOUT PAGE STYLES - ADORABLE DESIGN
   ============================================ */

/* About Hero Section */
.about-hero {
    position: relative;
    background: linear-gradient(135deg, 
        rgba(139, 92, 246, 0.1) 0%, 
        rgba(167, 139, 250, 0.15) 30%,
        rgba(196, 181, 253, 0.1) 60%,
        rgba(255, 255, 255, 0.05) 100%);
    border-radius: 30px;
    padding: 60px 40px;
    margin-bottom: 40px;
    text-align: center;
    overflow: hidden;
    border: 1px solid rgba(139, 92, 246, 0.2);
    box-shadow: 0 20px 40px rgba(139, 92, 246, 0.1);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-icon {
    font-size: 4rem;
    color: var(--superior-purple);
    margin-bottom: 20px;
    animation: heartbeat 2s ease-in-out infinite;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    background: var(--superior-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 0;
    opacity: 0.8;
}

.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    border-radius: 50%;
    background: var(--superior-gradient);
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.element-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.element-2 {
    width: 60px;
    height: 60px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.element-3 {
    width: 100px;
    height: 100px;
    top: 30%;
    right: 20%;
    animation-delay: 4s;
}

/* Modern Cards */
.about-content {
    margin-top: 40px;
}

.modern-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 25px;
    padding: 40px 35px;
    border: 1px solid rgba(139, 92, 246, 0.1);
    box-shadow: 0 15px 35px rgba(139, 92, 246, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.modern-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--superior-gradient);
    border-radius: 25px 25px 0 0;
}

.modern-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(139, 92, 246, 0.15);
}

.modern-card .card-icon {
    font-size: 3rem;
    color: var(--superior-purple);
    margin-bottom: 25px;
    display: block;
}

.modern-card .card-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 25px;
}

/* App Info Card */
.info-grid {
    display: grid;
    gap: 20px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: rgba(139, 92, 246, 0.05);
    border-radius: 15px;
    border-left: 4px solid var(--superior-purple);
    transition: all 0.3s ease;
}

.info-item:hover {
    background: rgba(139, 92, 246, 0.1);
    transform: translateX(5px);
}

.info-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.info-value {
    font-weight: 700;
    color: var(--superior-purple);
    font-size: 1rem;
}

/* Mission Card */
.mission-text {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-style: italic;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-weight: 500;
    color: var(--text-primary);
}

.feature-item i {
    color: var(--superior-purple);
    font-size: 1.1rem;
}

/* Team Section */
.team-section {
    margin-top: 30px;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.section-title i {
    color: var(--superior-purple);
    font-size: 2rem;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.team-member {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 25px;
    padding: 35px;
    border: 1px solid rgba(139, 92, 246, 0.1);
    box-shadow: 0 15px 35px rgba(139, 92, 246, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.team-member::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--superior-gradient);
    border-radius: 25px 25px 0 0;
}

.team-member:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px rgba(139, 92, 246, 0.15);
}

.lead-developer {
    border: 2px solid var(--superior-purple);
    box-shadow: 0 20px 40px rgba(139, 92, 246, 0.15);
}

.lead-developer::before {
    height: 6px;
    background: linear-gradient(90deg, #ffd700, var(--superior-purple), #ffd700);
}

.member-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--superior-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin: 0 auto 25px;
    box-shadow: 0 10px 25px rgba(139, 92, 246, 0.3);
}

.lead-developer .member-avatar {
    background: linear-gradient(135deg, #ffd700, var(--superior-purple));
    box-shadow: 0 15px 30px rgba(255, 215, 0, 0.3);
}

.member-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    text-align: center;
}

.member-role {
    font-size: 1rem;
    color: var(--superior-purple);
    font-weight: 600;
    text-align: center;
    margin-bottom: 15px;
}

.member-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    text-align: center;
    margin-bottom: 25px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 25px;
}

.social-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.social-btn.linkedin {
    background: linear-gradient(135deg, #0077b5, #00a0dc);
    color: white;
}

.social-btn.github {
    background: linear-gradient(135deg, #333, #555);
    color: white;
}

.social-btn:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    text-decoration: none;
    color: white;
}

.achievements {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.achievement {
    background: rgba(139, 92, 246, 0.1);
    color: var(--superior-purple);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

/* Animations */
@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(120deg); }
    66% { transform: translateY(10px) rotate(240deg); }
}

/* Dark Theme for About Page */
[data-bs-theme="dark"] .about-hero {
    background: linear-gradient(135deg, 
        rgba(139, 92, 246, 0.15) 0%, 
        rgba(167, 139, 250, 0.2) 30%,
        rgba(196, 181, 253, 0.15) 60%,
        rgba(0, 0, 0, 0.3) 100%);
    border-color: rgba(139, 92, 246, 0.3);
}

[data-bs-theme="dark"] .hero-subtitle {
    color: var(--text-secondary);
}

[data-bs-theme="dark"] .modern-card {
    background: var(--glass-dark-light);
    backdrop-filter: blur(20px);
    border-color: var(--dark-surface);
}

[data-bs-theme="dark"] .info-item {
    background: rgba(139, 92, 246, 0.1);
    border-left-color: var(--superior-light-purple);
}

[data-bs-theme="dark"] .info-item:hover {
    background: rgba(139, 92, 246, 0.15);
}

[data-bs-theme="dark"] .info-label {
    color: var(--text-secondary);
}

[data-bs-theme="dark"] .info-value {
    color: var(--superior-light-purple);
}

[data-bs-theme="dark"] .mission-text {
    color: var(--text-secondary);
}

[data-bs-theme="dark"] .team-member {
    background: var(--glass-dark-light);
    backdrop-filter: blur(20px);
    border-color: var(--dark-surface);
}

[data-bs-theme="dark"] .member-description {
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .about-hero {
        padding: 40px 25px;
        margin-bottom: 30px;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .modern-card {
        padding: 30px 25px;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .section-title {
        font-size: 2rem;
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .modern-card .card-title {
        font-size: 1.5rem;
    }
    
    .team-member {
        padding: 25px 20px;
    }
}