/* Import Google Fonts - Modern Typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* Modern CSS Variables - Light Mode - REDESIGNED */
:root {
    /* Primary Brand Colors - Deeper, Professional Tones */
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #6366f1;
    --secondary-color: #7c3aed;
    --accent-color: #db2777;

    /* Background Colors */
    --background-color: #f8fafc;
    --background-secondary: #f1f5f9;
    --card-bg-color: #ffffff;

    /* Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;

    /* UI Elements */
    --border-color: #e2e8f0;
    --hover-bg: #f1f5f9;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --border-radius: 12px;
    --border-radius-sm: 8px;

    /* Gradients - Redesigned */
    --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-secondary: linear-gradient(135deg, #db2777 0%, #f472b6 100%);
    --gradient-hero: linear-gradient(135deg, #4338ca 0%, #7c3aed 100%);
}

/* General Body Styles - Modern Typography */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Navbar Icon Visibility Fixes - Enhanced */
.navbar #dark-mode-toggle {
    background: rgba(255, 255, 255, 0.15) !important;
    border: 1px solid rgba(255, 255, 255, 0.8) !important;
    color: #ffffff !important;
    padding: 0.375rem 0.75rem !important;
    transition: all 0.3s ease !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar #dark-mode-toggle i {
    color: #ffffff !important;
    font-size: 1.2rem !important;
    display: inline-block !important;
    opacity: 1 !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.navbar #dark-mode-toggle:hover {
    background: rgba(255, 255, 255, 0.3) !important;
    border-color: #ffffff !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.navbar .bi-person-circle {
    color: #ffffff !important;
    font-size: 2rem !important;
    display: inline-block !important;
    opacity: 1 !important;
}

.navbar .profile-icon {
    width: 32px !important;
    height: 32px !important;
    border-radius: 50% !important;
    object-fit: cover !important;
    display: inline-block !important;
}

/* Profile placeholder icon - same size as actual profile image */
.navbar .profile-placeholder-icon {
    font-size: 32px !important;
    width: 32px !important;
    height: 32px !important;
    color: #ffffff !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    opacity: 1 !important;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
}

.navbar-nav .nav-link:hover {
    color: #ffffff !important;
}

.navbar-nav .dropdown-toggle::after {
    border-top-color: #ffffff !important;
}

/* Specific icon visibility */
.navbar .bi-sun-fill,
.navbar .bi-moon-stars-fill {
    color: #ffffff !important;
    font-size: 1.1rem !important;
    display: inline-block !important;
}

/* Ensure icons show in dark mode navbar */
.navbar-dark .bi-person-circle,
.navbar-dark #dark-mode-toggle,
.navbar-dark #dark-mode-toggle i {
    color: #ffffff !important;
    opacity: 1 !important;
}

/* Dark mode overrides */
.dark-mode .navbar #dark-mode-toggle,
.dark-mode .navbar .bi-person-circle,
.dark-mode .navbar-nav .nav-link {
    color: #ffffff !important;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.25rem;
}

h3 {
    font-size: 1.875rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1.125rem;
}

/* Modern Navbar with Glassmorphism */
.navbar {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1030;
}

.navbar-dark {
    background: var(--gradient-primary) !important;
}

/* Dropdown menu z-index */
.dropdown-menu {
    z-index: 1035;
}

/* Hover-activated dropdowns for desktop */
@media (min-width: 992px) {
    .navbar .nav-item.dropdown:hover .dropdown-menu {
        display: block;
        margin-top: 0;
        /* remove the gap so it doesn't close accidentally */
    }
}

.navbar .nav-item.dropdown .nav-link:focus,
.navbar .nav-item.dropdown:hover .nav-link {
    color: #f8f9fa;
    /* A lighter color for focus/hover */
}

footer {
    background-color: #2c3e50;
    color: white;
    padding: 2rem 0;
}

/* Main Content Area */
main {
    padding: 2rem 0;
}

/* Modern Hero Section with Vibrant Gradient */
.hero-section {
    background: var(--gradient-hero);
    color: white;
    padding: 5rem 2rem;
    text-align: center;
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    animation: fadeInHero 0.8s ease-out;
    z-index: 1;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    opacity: 0.5;
    z-index: -1;
}

@keyframes fadeInHero {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: 800;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.hero-section p {
    font-size: 1.35rem;
    margin-bottom: 2.5rem;
    font-weight: 400;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

/* Test Mode Buttons */
.test-modes-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.test-modes-buttons .btn {
    min-width: 200px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.test-modes-buttons .navbar-brand:hover {
    transform: scale(1.05);
}

/* Breadcrumb Container */
.breadcrumb-container {
    background-color: var(--background-secondary);
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

/* Hide breadcrumbs on mobile (< 768px), show on tablet+ */
@media (max-width: 767px) {
    .breadcrumb-container {
        display: none;
    }
}

/* Breadcrumb Navigation */
.breadcrumb-nav {
    background: transparent;
    padding: 0.75rem 0;
}

.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 0;
}

.breadcrumb-item+.breadcrumb-item::before {
    content: "›";
    color: var(--text-secondary);
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.breadcrumb-item a:hover {
    text-decoration: underline;
    color: var(--primary-hover);
}

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

/* Search Bar in Navbar */
.search-form {
    position: relative;
}

.search-input {
    min-width: 200px;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-input:focus {
    background: #ffffff;
    border-color: var(--primary-color);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.25);
}

/* Dark Mode Search Input */
.dark-mode .search-input {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
}

.dark-mode .search-input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.dark-mode .search-input:focus {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
    box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.25);
}

@media (max-width: 991px) {
    .search-input {
        min-width: 150px;
    }
}

/* Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Back to Top Button */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

#back-to-top.show {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    background: var(--primary-hover);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* Accessibility Improvements */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 100;
}

.skip-to-content:focus {
    top: 0;
}

/* Focus indicators */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Page Transition */
.page-transition {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.test-modes-buttons .btn:hover {
    transform: translateY(-3px);
}

.test-modes-buttons .btn i {
    margin-right: 0.5rem;
}

/* Modern Card Design */
.card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: var(--card-bg-color);
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
    z-index: 2;
}

.card-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--text-primary);
    padding: 1.25rem 1.5rem;
}

.card-title {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.card-text {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Modern Button Design */
.btn {
    border-radius: 10px;
    padding: 0.75rem 1.75rem;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.025em;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(100, 116, 139, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(100, 116, 139, 0.4);
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-warning {
    background: var(--gradient-secondary);
    color: white;
    box-shadow: 0 4px 12px rgba(236, 72, 153, 0.3);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(236, 72, 153, 0.4);
}

/* Forms */
.form-control {
    border-radius: var(--border-radius);
}

.form-control:focus {
    box-shadow: 0 0 0 0.25rem rgba(58, 123, 213, 0.25);
    border-color: var(--primary-color);
}

/* List Groups - Light Mode */
.list-group {
    --bs-list-group-bg: var(--card-bg-color);
    --bs-list-group-color: var(--text-primary);
}

.list-group-item {
    background-color: var(--card-bg-color);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.list-group-item-action {
    color: var(--text-primary);
}

.list-group-item-action:hover,
.list-group-item-action:focus {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}


/* --- DARK MODE - Redesigned Rich & Vibrant --- */
html.dark-mode {
    /* Dark Mode Brand Colors - More Vibrant */
    --primary-color: #6366f1;
    --primary-hover: #818cf8;
    --primary-light: #a5b4fc;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;

    /* Dark Backgrounds - Deeper, Richer */
    --background-color: #0a0e1a;
    --background-secondary: #151b2e;
    --card-bg-color: #151b2e;

    /* Dark Text Colors - Brighter */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;

    /* Dark UI Elements */
    --border-color: #1e293b;
    --hover-bg: #1e293b;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.6);

    /* Dark Gradients - Vibrant */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #ec4899 0%, #f472b6 100%);
    --gradient-hero: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

.dark-mode .navbar-dark {
    background-color: var(--primary-color) !important;
}

.dark-mode .card {
    border: 1px solid #2a3b5e;
    color: var(--text-color);
    /* Ensure text in cards is light */
}

.dark-mode .card .card-text,
.dark-mode .card .text-muted {
    color: var(--text-color) !important;
    /* Use important to override bootstrap defaults if necessary */
}

/* General text elements in dark mode */
.dark-mode p,
.dark-mode li,
.dark-mode label,
.dark-mode th,
.dark-mode td,
.dark-mode .form-text {
    color: var(--text-color);
}

/* Dark Mode - Component Styles */
.dark-mode body {
    background-color: var(--background-color);
    color: var(--text-primary);
}

.dark-mode .navbar {
    background: rgba(15, 23, 42, 0.95) !important;
    border-bottom-color: var(--border-color);
}

.dark-mode .navbar-dark {
    background: var(--gradient-primary) !important;
}

.dark-mode .card {
    background-color: var(--card-bg-color);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.dark-mode .card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(129, 140, 248, 0.1);
}

.dark-mode .card-header {
    background: linear-gradient(135deg, rgba(129, 140, 248, 0.1) 0%, rgba(167, 139, 250, 0.1) 100%);
    border-bottom-color: var(--border-color);
    color: var(--text-primary);
}

.dark-mode .card-title {
    color: var(--primary-light);
}

.dark-mode .card-text {
    color: var(--text-secondary);
}

.dark-mode h1,
.dark-mode h2,
.dark-mode h3,
.dark-mode h4,
.dark-mode h5,
.dark-mode h6 {
    color: var(--text-primary);
}

.dark-mode p,
.dark-mode li,
.dark-mode label {
    color: var(--text-secondary);
}

/* Additional Dark Mode Text Visibility Fixes */
.dark-mode .text-dark {
    color: var(--text-primary) !important;
}

.dark-mode .text-muted {
    color: var(--text-muted) !important;
}

.dark-mode a {
    color: var(--primary-light);
}

.dark-mode a:hover {
    color: var(--primary-color);
}

.dark-mode .list-group-item {
    background-color: var(--card-bg-color);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.dark-mode .list-group-item:hover {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

.dark-mode .list-group-item-action {
    color: var(--text-primary);
    background-color: transparent;
}

.dark-mode .list-group-item-action:hover,
.dark-mode .list-group-item-action:focus {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

.dark-mode .list-group-flush .list-group-item {
    background-color: transparent;
    color: var(--text-primary);
}

.dark-mode .category-item {
    color: var(--text-primary);
}

.dark-mode .category-item:hover {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

.dark-mode .category-item i {
    color: var(--text-secondary);
}

.dark-mode .card-header i {
    color: var(--text-secondary);
}

.dark-mode .card-body p,
.dark-mode .card-body h5,
.dark-mode .card-body h6 {
    color: var(--text-primary);
}

.dark-mode small {
    color: var(--text-muted);
}

.dark-mode .bg-light {
    background-color: var(--background-secondary) !important;
}

.dark-mode .border {
    border-color: var(--border-color) !important;
}

.dark-mode .table {
    color: var(--text-primary);
}

.dark-mode .table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(255, 255, 255, 0.02);
}

.dark-mode th {
    color: var(--text-primary);
}

.dark-mode td {
    color: var(--text-secondary);
}

/* Exam Page Specific Styles */
.question-map-btn {
    width: 45px;
    height: 45px;
    min-width: 45px;
    /* Ensure it doesn't get smaller */
    padding: 0.5rem;
    /* Adjust padding */
    font-size: 1rem;
    line-height: 1.5;
    /* Center the text vertically */
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.8rem;
    }
}

/* Leaderboard Button Animation */
.leaderboard-btn-home {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 193, 7, 0.7);
    }

    70% {
        transform: scale(1);
        box-shadow: 0 0 0 10px rgba(255, 193, 7, 0);
    }

    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 193, 7, 0);
    }
}

/* Homepage Card Animations - Fixed for visibility */
.card-animated {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.card-animated.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Category item hover effect */
.category-item {
    transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out;
    color: var(--text-primary);
}

.category-item:hover {
    background-color: #e9ecef;
    transform: translateX(5px);
    color: var(--text-primary);
}

.dark-mode .category-item {
    color: var(--text-primary);
}

.dark-mode .category-item:hover {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

/* ===== BROWSE BY CATEGORY SECTION - ULTRA-SPECIFIC FIXES ===== */

/* Light Mode - Browse by Category - Force All Text Visible */
.browse-categories .card {
    background-color: var(--card-bg-color) !important;
    color: var(--text-primary) !important;
}

.browse-categories .card-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%) !important;
    border-bottom-color: var(--border-color) !important;
}

.browse-categories .card-header h3,
.browse-categories .card-header h3 * {
    color: var(--text-primary) !important;
    margin: 0;
    font-weight: 600;
}

.browse-categories .card-header i,
.browse-categories .card-header .bi {
    color: var(--text-secondary) !important;
}

.browse-categories .card-body {
    background-color: var(--card-bg-color) !important;
    color: var(--text-primary) !important;
}

.browse-categories .list-group {
    background-color: transparent !important;
}

.browse-categories .list-group-item,
.browse-categories .list-group-item *,
.browse-categories .category-item,
.browse-categories .category-item * {
    background-color: transparent !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
    text-decoration: none !important;
}

.browse-categories .list-group-item:hover,
.browse-categories .category-item:hover {
    background-color: var(--hover-bg) !important;
    color: var(--text-primary) !important;
}

.browse-categories .list-group-item i,
.browse-categories .category-item i,
.browse-categories .bi-chevron-right {
    color: var(--text-secondary) !important;
}

.browse-categories a,
.browse-categories a *,
.browse-categories .list-group-item-action,
.browse-categories .list-group-item-action * {
    color: var(--text-primary) !important;
    text-decoration: none !important;
}

/* Dark Mode - Browse by Category - Ultra Force */
.dark-mode .browse-categories .card {
    background-color: var(--card-bg-color) !important;
    color: var(--text-primary) !important;
}

.dark-mode .browse-categories .card-header {
    background: linear-gradient(135deg, rgba(129, 140, 248, 0.1) 0%, rgba(167, 139, 250, 0.1) 100%) !important;
    border-bottom-color: var(--border-color) !important;
}

.dark-mode .browse-categories .card-header h3,
.dark-mode .browse-categories .card-header h3 * {
    color: var(--text-primary) !important;
}

.dark-mode .browse-categories .card-header i,
.dark-mode .browse-categories .card-header .bi {
    color: var(--text-secondary) !important;
}

.dark-mode .browse-categories .card-body {
    background-color: var(--card-bg-color) !important;
    color: var(--text-primary) !important;
}

.dark-mode .browse-categories .list-group-item,
.dark-mode .browse-categories .list-group-item *,
.dark-mode .browse-categories .category-item,
.dark-mode .browse-categories .category-item * {
    background-color: transparent !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

.dark-mode .browse-categories .list-group-item:hover,
.dark-mode .browse-categories .category-item:hover {
    background-color: var(--hover-bg) !important;
    color: var(--text-primary) !important;
}

.dark-mode .browse-categories .list-group-item i,
.dark-mode .browse-categories .category-item i,
.dark-mode .browse-categories .bi-chevron-right {
    color: var(--text-secondary) !important;
}

.dark-mode .browse-categories a,
.dark-mode .browse-categories a *,
.dark-mode .browse-categories .list-group-item-action,
.dark-mode .browse-categories .list-group-item-action * {
    color: var(--text-primary) !important;
    text-decoration: none !important;
}

.dark-mode .browse-categories a:hover,
.dark-mode .browse-categories a:hover * {
    color: var(--text-primary) !important;
}

/* Homepage Specific Styles - Light Mode */
.hero-section * {
    color: white !important;
}

.hero-section h1,
.hero-section p,
.hero-section a {
    color: white !important;
}

.browse-categories h2,
.trending-exams h2,
.user-created-mcqs h2,
.my-mcqs h2 {
    color: var(--text-primary);
}

.testimonials h2 {
    color: var(--text-primary);
}

.testimonial-text {
    color: var(--text-secondary);
}

.testimonial-author {
    color: var(--primary-color);
}

/* Card content visibility - Light Mode */
.my-mcqs .card-title,
.trending-exams .card-title,
.user-created-mcqs .card-title {
    color: var(--primary-color);
}

.my-mcqs .card-text,
.trending-exams .card-text,
.user-created-mcqs .card-text {
    color: var(--text-secondary);
}

.my-mcqs .badge,
.trending-exams .badge,
.user-created-mcqs .badge {
    color: white;
}

/* Search bar in hero */
.hero-section .form-control {
    color: var(--text-primary);
    background-color: white;
}

.hero-section .form-control::placeholder {
    color: var(--text-muted);
}

.hero-section .btn-primary,
.hero-section .btn-warning {
    color: white !important;
}

/* Dark Mode - Homepage Specific */
.dark-mode .browse-categories h2,
.dark-mode .trending-exams h2,
.dark-mode .user-created-mcqs h2,
.dark-mode .my-mcqs h2,
.dark-mode .testimonials h2 {
    color: var(--text-primary);
}

.dark-mode .testimonial-text {
    color: var(--text-secondary);
}

.dark-mode .testimonial-author {
    color: var(--primary-light);
}

/* Dark Mode - Card content visibility */
.dark-mode .my-mcqs .card-title,
.dark-mode .trending-exams .card-title,
.dark-mode .user-created-mcqs .card-title {
    color: var(--primary-light);
}

.dark-mode .my-mcqs .card-text,
.dark-mode .trending-exams .card-text,
.dark-mode .user-created-mcqs .card-text {
    color: var(--text-secondary);
}

.dark-mode .my-mcqs .badge,
.dark-mode .trending-exams .badge,
.dark-mode .user-created-mcqs .badge {
    color: white;
}

.dark-mode .my-mcqs small,
.dark-mode .trending-exams small,
.dark-mode .user-created-mcqs small {
    color: var(--text-muted);
}

.dark-mode .hero-section .form-control {
    background-color: rgba(30, 41, 59, 0.8);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.dark-mode .hero-section .form-control::placeholder {
    color: var(--text-muted);
}

.dark-mode .hero-section .btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.dark-mode .hero-section .btn-primary *,
.dark-mode .hero-section .btn-warning * {
    color: white !important;
}

/* === CAROUSEL SECTIONS - EXPLICIT COLOR FIXES === */

/* Trending Exam Prep Worksheets Section */
.trending-exams .card {
    background-color: var(--card-bg-color) !important;
}

.trending-exams .card-body {
    color: var(--text-primary) !important;
}

.trending-exams .card-title {
    color: var(--primary-color) !important;
}

.trending-exams .card-text {
    color: var(--text-secondary) !important;
}

.trending-exams .btn {
    color: white !important;
}

/* Community MCQs Section */
.user-created-mcqs .card {
    background-color: var(--card-bg-color) !important;
}

.user-created-mcqs .card-body {
    color: var(--text-primary) !important;
}

.user-created-mcqs .card-title {
    color: var(--primary-color) !important;
}

.user-created-mcqs .card-text {
    color: var(--text-secondary) !important;
}

.user-created-mcqs small {
    color: var(--text-muted) !important;
}

.user-created-mcqs .btn {
    color: white !important;
}

/* Dark Mode - Carousel Sections */
.dark-mode .trending-exams .card,
.dark-mode .user-created-mcqs .card {
    background-color: var(--card-bg-color) !important;
}

.dark-mode .trending-exams .card-body,
.dark-mode .user-created-mcqs .card-body {
    color: var(--text-primary) !important;
}

.dark-mode .trending-exams .card-title,
.dark-mode .user-created-mcqs .card-title {
    color: var(--primary-light) !important;
}

.dark-mode .trending-exams .card-text,
.dark-mode .user-created-mcqs .card-text {
    color: var(--text-secondary) !important;
}

.dark-mode .user-created-mcqs small {
    color: var(--text-muted) !important;
}

.dark-mode .trending-exams .btn,
.dark-mode .user-created-mcqs .btn {
    color: white !important;
}

/* Carousel Controls */
.carousel-control-prev-icon,
.carousel-control-next-icon {
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    padding: 1rem;
}

.dark-mode .carousel-control-prev-icon,
.dark-mode .carousel-control-next-icon {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Testimonials Section */
.testimonials {
    background-color: var(--card-bg-color);
    padding: 4rem 0;
}

.testimonial-card {
    max-width: 700px;
    margin: 0 auto;
    padding: 2rem;
    text-align: center;
}

.testimonial-img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
    border: 4px solid var(--primary-color);
}

.testimonial-text {
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: 1rem;
}

.testimonial-author {
    font-weight: 600;
    color: var(--primary-color);
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    filter: invert(1);
}

/* --- Flashcard Styles --- */
.flashcard-container {
    perspective: 1000px;
    height: 400px;
    margin-bottom: 2rem;
}

.flashcard {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.6s;
}

.flashcard.is-flipped {
    transform: rotateY(180deg);
}

.flashcard-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    border-radius: var(--border-radius);
    border: 1px solid #dee2e6;
    /* A neutral border color */
}

.flashcard-front {
    background-color: #f0f9ff;
    /* Light blueish */
}

.flashcard-back {
    background-color: #e2f0d9;
    /* Light greenish */
    transform: rotateY(180deg);
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    width: 100%;
    margin-top: 1rem;
}

.option-btn {
    border: 1px solid #ccc;
    background: #fff;
    color: #333;
    /* Explicitly set text color for light mode */
}

/* Flashcard/* Dark Mode Styles */
.dark-mode {
    background-color: #1a1a1a;
    color: #e0e0e0;
}

.dark-mode body {
    background-color: #1a1a1a;
    color: #e0e0e0;
}

.dark-mode .navbar {
    background-color: #2d2d2d !important;
}

.dark-mode .card {
    background-color: #2d2d2d;
    color: #e0e0e0;
    border-color: #404040;
}

.dark-mode .card-header {
    background-color: #3a3a3a;
    color: #e0e0e0;
    border-bottom-color: #404040;
}

.dark-mode .list-group-item {
    background-color: #2d2d2d;
    color: #e0e0e0;
    border-color: #404040;
}

.dark-mode .list-group-item:hover {
    background-color: #3a3a3a;
}

.dark-mode .btn-outline-secondary {
    color: #e0e0e0;
    border-color: #6c757d;
}

.dark-mode .btn-outline-secondary:hover {
    background-color: #6c757d;
    color: #fff;
}

.dark-mode .form-control,
.dark-mode .form-select {
    background-color: #1e293b;
    color: var(--text-primary);
    border-color: var(--border-color);
}

.dark-mode .form-control:focus,
.dark-mode .form-select:focus {
    background-color: #1e293b;
    color: var(--text-primary);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(129, 140, 248, 0.25);
}

.dark-mode .form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.dark-mode .form-check-input {
    background-color: #1e293b;
    border-color: var(--border-color);
}

.dark-mode .form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.dark-mode .form-check-label {
    color: var(--text-primary);
}

.dark-mode .form-label {
    color: var(--text-primary);
}

.dark-mode .modal-content {
    background-color: var(--card-bg-color);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.dark-mode .modal-header,
.dark-mode .modal-footer {
    border-color: var(--border-color);
}

.dark-mode .modal-title {
    color: var(--text-primary);
}

.dark-mode .dropdown-menu {
    background-color: var(--card-bg-color);
    border-color: var(--border-color);
}

.dark-mode .dropdown-item {
    color: var(--text-primary);
}

.dark-mode .dropdown-item:hover,
.dark-mode .dropdown-item:focus {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

.dark-mode .dropdown-divider {
    border-color: var(--border-color);
}


.dark-mode .modal-content {
    background-color: #2d2d2d;
    color: #e0e0e0;
}

.dark-mode .modal-header,
.dark-mode .modal-footer {
    border-color: #404040;
}

.dark-mode .dropdown-menu {
    background-color: #2d2d2d;
    border-color: #404040;
}

.dark-mode .dropdown-item {
    color: #e0e0e0;
}

.dark-mode .dropdown-item:hover,
.dark-mode .dropdown-item:focus {
    background-color: #3a3a3a;
    color: #fff;
}

.dark-mode footer {
    background-color: #2d2d2d !important;
    color: #e0e0e0;
}

.dark-mode .text-muted {
    color: #999 !important;
}

.dark-mode .text-dark {
    color: #e0e0e0 !important;
}

.dark-mode .bg-light {
    background-color: #3a3a3a !important;
}

.dark-mode .border {
    border-color: #404040 !important;
}

.dark-mode a {
    color: #6ea8fe;
}

.dark-mode a:hover {
    color: #9ec5fe;
}

.dark-mode .badge {
    color: #fff;
}

.dark-mode .alert-info {
    background-color: #1f4a5c;
    border-color: #2a5f73;
    color: #c3e7ff;
}

.dark-mode .alert-warning {
    background-color: #5c4a1f;
    border-color: #735f2a;
    color: #ffe7c3;
}

.dark-mode .alert-success {
    background-color: #1f5c2a;
    border-color: #2a733a;
    color: #c3ffd0;
}

.dark-mode .alert-danger {
    background-color: #5c1f1f;
    border-color: #732a2a;
    color: #ffc3c3;
}

.dark-mode .table {
    color: #e0e0e0;
}

.dark-mode .table-striped tbody tr:nth-of-type(odd) {
    background-color: #2a2a2a;
}

.dark-mode .flashcard {
    background-color: #2d2d2d;
    color: #e0e0e0;
}

.dark-mode .flashcard-face {
    background-color: #2d2d2d;
    color: #e0e0e0;
}

.dark-mode .correct-answer-box {
    background-color: #1f5c2a;
    border-color: #2a733a;
    color: #c3ffd0;
}

/* Fix for form check inputs */
.dark-mode .form-check-input {
    background-color: #3a3a3a;
    border-color: #555;
}

.dark-mode .form-check-input:checked {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.dark-mode .form-check-label {
    color: #e0e0e0;
}

/* Homepage specific dark mode fixes */
.dark-mode .hero-section {
    color: #ffffff !important;
}

.dark-mode .hero-section h1,
.dark-mode .hero-section p {
    color: #ffffff !important;
}

.dark-mode .card-body p,
.dark-mode .card-body h5,
.dark-mode .card-body h6 {
    color: #e0e0e0;
}

.dark-mode .card-text {
    color: #c0c0c0 !important;
}

.dark-mode .badge {
    background-color: #3a3a3a;
    color: #e0e0e0;
}

.dark-mode .btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
    color: #ffffff;
}

.dark-mode .btn-secondary {
    background-color: #6c757d;
    border-color: #6c757d;
    color: #ffffff;
}

.dark-mode .text-center h2,
.dark-mode .text-center h3,
.dark-mode .text-center h4 {
    color: #e0e0e0;
}

/* Browse by Category section specific fixes */
.dark-mode .card-header h3 {
    color: #e0e0e0 !important;
}

.dark-mode .category-item {
    color: #e0e0e0;
}

.dark-mode .category-item i {
    color: #e0e0e0;
}

.dark-mode .list-group-item-action {
    color: #e0e0e0;
}

.dark-mode .list-group-item-action:hover {
    color: #ffffff;
    background-color: #3a3a3a;
}

/* Ensure icons in cards are visible */
.dark-mode .card-header i {
    color: #e0e0e0;
}

/* Flashcard Dark Mode Styles */
.dark-mode .flashcard-face {
    border-color: #2a3b5e;
}

.dark-mode .flashcard-front {
    background-color: #1e2a47;
    /* A dark blue */
}

.dark-mode .flashcard-back {
    background-color: #2a471e;
    /* A dark green */
}

.dark-mode .option-btn {
    background: var(--card-bg-color);
    border-color: #2a3b5e;
    color: var(--text-color);
}

/* Flashcard button states (shared between light/dark) */
.option-btn.selected {
    background-color: #0d6efd;
    color: white;
    border-color: #0d6efd;
}

.option-btn.correct {
    background-color: #198754;
    color: white;
}

.option-btn.incorrect {
    background-color: #dc3545;
    color: white;
}

/* Highlight for correct answer box in study mode */
.correct-answer-box {
    background-color: #e2f0d9;
    /* Light green */
    border: 1px solid #c6e0b4;
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-top: 0.5rem;
}

.correct-answer-box p {
    margin-bottom: 0;
}

.dark-mode .correct-answer-box {
    background-color: #2a471e;
    /* Dark green */
    border-color: #4a783b;
}

.dark-mode .correct-answer-box p,
.dark-mode .correct-answer-box .correct-option {
    color: #e0e0e0;
    /* Ensure text inside is light */
}

/* Study Mode Page Specific Styles */
.question-block {
    margin-bottom: 3rem;
    /* Increased spacing */
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
}

.solution-div {
    display: none;
    padding: 1rem;
    background-color: #f0f9ff;
    border: 1px solid #bde0fe;
    border-radius: var(--border-radius);
    margin-top: 1rem;
}

.correct-option {
    font-weight: bold;
    color: #198754;
}

.form-check-label.correct,
.form-check-label.correct .check-icon {
    color: #198754;
    font-weight: bold;
}

.form-check-label.incorrect,
.form-check-label.incorrect .check-icon {
    color: #dc3545;
    font-weight: bold;
}

.form-check-label .check-icon {
    margin-left: 10px;
}

/* Dark mode adjustments for study mode */
.dark-mode .question-block {
    border-bottom-color: #2a3b5e;
}

.dark-mode .solution-div {
    background-color: #1e2a47;
    border-color: #2a3b5e;
}