:root {
    /* Primary Colors for EdTech */
    --color-primary-blue: #2196F3;
    /* Trust, Focus */
    --color-dark-blue: #0D47A1;
    /* Professionalism */
    --color-primary-green: #4CAF50;
    /* Growth, Harmony */
    --color-vibrant-green: #8BC34A;
    /* Energy */

    /* Accent Colors */
    --color-accent-yellow: #FFC107;
    /* Optimism, Attention */
    --color-accent-orange: #FF9800;
    /* Friendly, Lively */
    --color-red: #F44336;
    /* Alert, Important (use sparingly) */

    /* Neutral Colors */
    --color-background-light: #F8F9FA;
    /* Clean, spacious */
    --color-background-dark: #E9ECEF;
    /* Subtle contrast */
    --color-text-dark: #343A40;
    /* Readable dark text */
    --color-text-light: #6C757D;
    /* Secondary text */
    --color-border: #DEE2E6;
    /* Subtle borders */
    --color-white: #FFFFFF;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Font Sizes */
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 2rem;
    --font-size-xxl: 2.5rem;

    /* Border Radius */
    --border-radius: 8px;
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--color-text-dark);
    background-color: var(--color-background-light);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    /* Ensure no default body margin */
    padding: 0;
    /* Ensure no default body padding */
}

#wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* MODIFIED: Make the main content container fluid on desktop */
.container {
    /* max-width: 1200px;  <-- COMMENT THIS OUT OR REMOVE IT */
    max-width: 100%;
    /* Allow it to take full width */
    margin: 0 auto;
    /* We'll manage inner padding within content-wrapper now */
    padding: 0;
    /* Remove padding from this outer container if you want true edge-to-edge */
    width: 100%;
}

a {
    color: var(--color-primary-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-dark-blue);
}

ul {
    list-style: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
    font-weight: 600;
}

.btn-primary {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
    border: 1px solid var(--color-primary-blue);
}

.btn-primary:hover {
    background-color: var(--color-dark-blue);
    border-color: var(--color-dark-blue);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-primary-green);
    border: 1px solid var(--color-primary-green);
}

.btn-secondary:hover {
    background-color: var(--color-primary-green);
    color: var(--color-white);
}

/* Navbar */
.navbar {
    background-color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

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

.navbar .logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-text-dark);
}

.navbar .logo img {
    height: 40px;
    margin-right: 10px;
}

.navbar .nav-links ul {
    display: flex;
    gap: var(--spacing-md);
}

.navbar .nav-links a {
    color: var(--color-text-dark);
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

.navbar .nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary-blue);
    transition: width 0.3s ease;
}

.navbar .nav-links a:hover::after {
    width: 100%;
}

.navbar .search-bar {
    display: flex;
    align-items: center;
}

.navbar .search-bar input {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    margin-right: 5px;
    font-size: var(--font-size-sm);
    outline: none;
}

.navbar .search-bar button {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
    border: none;
    padding: 8px 12px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.navbar .search-bar button:hover {
    background-color: var(--color-dark-blue);
}

.hamburger-menu {
    display: none;
    /* Hidden on desktop */
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--color-text-dark);
    cursor: pointer;
}

/* Dropdown (for 'More' in Navbar) */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--color-white);
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
    z-index: 1;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-top: 5px;
    /* Space below "More" */
}

.dropdown-content a {
    color: var(--color-text-dark);
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
    transition: background-color 0.2s ease;
    white-space: nowrap;
    /* Prevent wrapping */
}

.dropdown-content a:hover {
    background-color: var(--color-background-dark);
}

.dropdown:hover .dropdown-content {
    display: block;
}

/* Main Content Layout (Desktop) */
#main-content {
    display: flex;
    flex-grow: 1;
    padding: var(--spacing-lg) 0;
    /* This padding adds vertical space */
    width: 100%;
}

/* MODIFIED: Allow content-wrapper to be wider,
             but keep padding for readability */
.content-wrapper {
    display: flex;
    width: 100%;
    /* max-width: 1200px;  <-- COMMENT THIS OUT OR REMOVE IT */
    max-width: 100%;
    /* Allow it to take full width */
    margin: 0 auto;
    /* Keep margin auto to center if max-width is set higher */
    gap: var(--spacing-lg);
    /* This padding will now create the inner 'safe' space for content */
    padding: 0 var(--spacing-md);
    /* Keep this to prevent content from touching edges */
}

.main-content {
    flex: 3;
    /* Takes up more space */
    padding-right: var(--spacing-md);
    /* Space from right sidebar */
}

.sidebar {
    flex: 1;
    /* Takes up less space */
    padding-left: var(--spacing-md);
    /* Space from main content */
    border-left: 1px solid var(--color-border);
    padding-top: var(--spacing-sm);
}

.left-sidebar {
    order: -1;
    /* Puts it on the left */
    border-left: none;
    /* No left border for the left sidebar */
    border-right: 1px solid var(--color-border);
    /* Add right border */
    padding-right: var(--spacing-md);
    padding-left: 0;
}

/* Specific sidebar sections */
.sidebar-section {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.sidebar-section h3 {
    color: var(--color-dark-blue);
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary-blue);
    padding-bottom: 8px;
}

.sidebar-section ul {
    padding-left: var(--spacing-sm);
}

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

.sidebar-section ul li a {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    transition: color 0.2s ease;
}

.sidebar-section ul li a:hover {
    color: var(--color-primary-blue);
    text-decoration: underline;
}

/* Grade List Grid */
.grade-list-grid,
.subject-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.grade-card,
.subject-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grade-card:hover,
.subject-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.grade-image,
.subject-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.grade-info,
.subject-info {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.grade-info h2,
.subject-info h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-md);
    line-height: 1.3;
}

.grade-info h2 a,
.subject-info h3 a {
    color: var(--color-dark-blue);
}

.grade-info .grade-label {
    font-size: var(--font-size-sm);
    color: var(--color-primary-green);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.grade-info .grade-description,
.subject-info .subject-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    flex-grow: 1;
    /* Pushes button to bottom */
}

.grade-stats,
.subject-stats {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.grade-stats i,
.subject-stats i {
    margin-right: 5px;
    color: var(--color-primary-blue);
}

.grade-card .btn,
.subject-card .btn {
    margin-top: auto;
    /* Aligns button at the bottom */
    width: 100%;
}

.disabled-link {
    color: #6c757d;
    /* Bootstrap's muted text color */
    pointer-events: none;
    /* Prevents clicking */
    cursor: not-allowed;
    /* Shows a "not-allowed" cursor */
}

/* Enhanced Desktop Pagination Styles - High Specificity */
.content-wrapper .main-content .sec-pagination-wrapper,
nav.sec-pagination-wrapper {
    margin: var(--spacing-xl) 0;
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.15);
    padding: var(--spacing-lg);
    border: 2px solid var(--color-primary-blue);
    position: relative;
    overflow: hidden;
}

.content-wrapper .main-content .sec-pagination-wrapper::before,
nav.sec-pagination-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary-blue), var(--color-primary-green), var(--color-accent-orange));
    z-index: 1;
}

.content-wrapper .main-content .pagination-info-section,
nav.sec-pagination-wrapper .pagination-info-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.05), rgba(76, 175, 80, 0.05));
    border-radius: var(--border-radius);
    border: 1px solid rgba(33, 150, 243, 0.1);
}

.content-wrapper .main-content .results-summary,
.content-wrapper .main-content .page-summary,
nav.sec-pagination-wrapper .results-summary,
nav.sec-pagination-wrapper .page-summary {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-dark);
    font-weight: 600;
    padding: var(--spacing-sm);
    background: var(--color-white);
    border-radius: 6px;
    border: 1px solid var(--color-border);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.content-wrapper .main-content .results-summary i,
nav.sec-pagination-wrapper .results-summary i {
    color: var(--color-primary-blue);
    font-size: var(--font-size-base);
    font-weight: bold;
}

.content-wrapper .main-content .page-summary i,
nav.sec-pagination-wrapper .page-summary i {
    color: var(--color-primary-green);
    font-size: var(--font-size-base);
    font-weight: bold;
}

.content-wrapper .main-content .sec-pagination-container,
nav.sec-pagination-wrapper .sec-pagination-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
}

.content-wrapper .main-content .pagination-nav-group,
nav.sec-pagination-wrapper .pagination-nav-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.content-wrapper .main-content .pagination-numbers,
nav.sec-pagination-wrapper .pagination-numbers {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-lg);
    background: rgba(33, 150, 243, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(33, 150, 243, 0.1);
}

.content-wrapper .main-content .pagination-btn,
.content-wrapper .main-content .page-number-btn,
nav.sec-pagination-wrapper .pagination-btn,
nav.sec-pagination-wrapper .page-number-btn {
    display: flex !important;
    align-items: center !important;
    gap: var(--spacing-xs) !important;
    padding: 14px 18px !important;
    background: var(--color-white) !important;
    border: 2px solid var(--color-border) !important;
    border-radius: 8px !important;
    color: var(--color-text-dark) !important;
    text-decoration: none !important;
    font-weight: 700 !important;
    font-size: var(--font-size-sm) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    cursor: pointer !important;
    min-width: 48px !important;
    justify-content: center !important;
    position: relative !important;
    overflow: hidden !important;
}

.content-wrapper .main-content .pagination-btn::before,
.content-wrapper .main-content .page-number-btn::before,
nav.sec-pagination-wrapper .pagination-btn::before,
nav.sec-pagination-wrapper .page-number-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

.content-wrapper .main-content .pagination-btn:hover::before,
.content-wrapper .main-content .page-number-btn:hover::before,
nav.sec-pagination-wrapper .pagination-btn:hover::before,
nav.sec-pagination-wrapper .page-number-btn:hover::before {
    left: 100%;
}

.content-wrapper .main-content .pagination-btn:hover,
.content-wrapper .main-content .page-number-btn:hover,
nav.sec-pagination-wrapper .pagination-btn:hover,
nav.sec-pagination-wrapper .page-number-btn:hover {
    background: var(--color-primary-blue) !important;
    border-color: var(--color-primary-blue) !important;
    color: var(--color-white) !important;
    transform: translateY(-3px) scale(1.05) !important;
    box-shadow: 0 8px 16px rgba(33, 150, 243, 0.4) !important;
    text-decoration: none !important;
}

.content-wrapper .main-content .page-number-btn.active,
nav.sec-pagination-wrapper .page-number-btn.active {
    background: var(--color-primary-blue) !important;
    border-color: var(--color-primary-blue) !important;
    color: var(--color-white) !important;
    box-shadow: 0 6px 12px rgba(33, 150, 243, 0.4) !important;
    font-weight: 800 !important;
    transform: scale(1.1) !important;
}

.content-wrapper .main-content .pagination-btn.disabled,
nav.sec-pagination-wrapper .pagination-btn.disabled {
    background: var(--color-background-dark) !important;
    border-color: var(--color-border) !important;
    color: var(--color-text-light) !important;
    cursor: not-allowed !important;
    opacity: 0.5 !important;
}

.content-wrapper .main-content .pagination-btn.disabled:hover,
nav.sec-pagination-wrapper .pagination-btn.disabled:hover {
    transform: none !important;
    box-shadow: none !important;
    background: var(--color-background-dark) !important;
    border-color: var(--color-border) !important;
    color: var(--color-text-light) !important;
}

.content-wrapper .main-content .pagination-ellipsis,
nav.sec-pagination-wrapper .pagination-ellipsis {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 14px 18px !important;
    color: var(--color-text-light) !important;
    font-size: var(--font-size-base) !important;
    min-width: 48px !important;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0.6;
    }
}

.content-wrapper .main-content .pagination-ellipsis i,
nav.sec-pagination-wrapper .pagination-ellipsis i {
    color: var(--color-primary-blue) !important;
    font-size: var(--font-size-lg) !important;
}

/* Specific button styling with enhanced effects */
.content-wrapper .main-content .first-btn,
.content-wrapper .main-content .last-btn,
nav.sec-pagination-wrapper .first-btn,
nav.sec-pagination-wrapper .last-btn {
    background: linear-gradient(135deg, var(--color-primary-green), var(--color-vibrant-green)) !important;
    border-color: var(--color-primary-green) !important;
    color: var(--color-white) !important;
    font-weight: 800 !important;
}

.content-wrapper .main-content .first-btn:hover,
.content-wrapper .main-content .last-btn:hover,
nav.sec-pagination-wrapper .first-btn:hover,
nav.sec-pagination-wrapper .last-btn:hover {
    background: linear-gradient(135deg, var(--color-vibrant-green), var(--color-primary-green)) !important;
    border-color: var(--color-vibrant-green) !important;
    box-shadow: 0 8px 16px rgba(76, 175, 80, 0.4) !important;
    transform: translateY(-3px) scale(1.05) !important;
}

.content-wrapper .main-content .prev-btn,
.content-wrapper .main-content .next-btn,
nav.sec-pagination-wrapper .prev-btn,
nav.sec-pagination-wrapper .next-btn {
    background: linear-gradient(135deg, var(--color-accent-orange), var(--color-accent-yellow)) !important;
    border-color: var(--color-accent-orange) !important;
    color: var(--color-white) !important;
    font-weight: 800 !important;
}

.content-wrapper .main-content .prev-btn:hover,
.content-wrapper .main-content .next-btn:hover,
nav.sec-pagination-wrapper .prev-btn:hover,
nav.sec-pagination-wrapper .next-btn:hover {
    background: linear-gradient(135deg, var(--color-accent-yellow), var(--color-accent-orange)) !important;
    border-color: var(--color-accent-yellow) !important;
    box-shadow: 0 8px 16px rgba(255, 152, 0, 0.4) !important;
    transform: translateY(-3px) scale(1.05) !important;
}

/* Responsive adjustments for desktop pagination - High Specificity */
@media (max-width: 992px) {

    .content-wrapper .main-content .pagination-info-section,
    nav.sec-pagination-wrapper .pagination-info-section {
        flex-direction: column !important;
        gap: var(--spacing-sm) !important;
        text-align: center !important;
    }

    .content-wrapper .main-content .sec-pagination-container,
    nav.sec-pagination-wrapper .sec-pagination-container {
        flex-wrap: wrap !important;
        gap: var(--spacing-sm) !important;
    }

    .content-wrapper .main-content .pagination-btn span,
    .content-wrapper .main-content .page-number-btn span,
    nav.sec-pagination-wrapper .pagination-btn span,
    nav.sec-pagination-wrapper .page-number-btn span {
        display: none !important;
    }

    .content-wrapper .main-content .pagination-btn,
    .content-wrapper .main-content .page-number-btn,
    nav.sec-pagination-wrapper .pagination-btn,
    nav.sec-pagination-wrapper .page-number-btn {
        min-width: 44px !important;
        padding: 12px !important;
    }
}

@media (max-width: 768px) {

    .content-wrapper .main-content .sec-pagination-wrapper,
    nav.sec-pagination-wrapper {
        padding: var(--spacing-md) !important;
        margin: var(--spacing-lg) 0 !important;
    }

    .content-wrapper .main-content .pagination-numbers,
    nav.sec-pagination-wrapper .pagination-numbers {
        padding: 0 !important;
        overflow-x: auto !important;
        scrollbar-width: none !important;
        -ms-overflow-style: none !important;
    }

    .content-wrapper .main-content .pagination-numbers::-webkit-scrollbar,
    nav.sec-pagination-wrapper .pagination-numbers::-webkit-scrollbar {
        display: none !important;
    }

    .content-wrapper .main-content .sec-pagination-container,
    nav.sec-pagination-wrapper .sec-pagination-container {
        flex-direction: column !important;
        gap: var(--spacing-md) !important;
    }

    .content-wrapper .main-content .pagination-nav-group,
    nav.sec-pagination-wrapper .pagination-nav-group {
        width: 100% !important;
        justify-content: center !important;
    }
}

/* Override any existing pagination styles */
.pagination-container,
.pagination {
    display: none !important;
}

/* Show only our new pagination */
.sec-pagination-wrapper {
    display: block !important;
}

/* Pagination */
.pagination {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.pagination .step-links {
    display: inline-flex;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.pagination .page-link,
.pagination .current {
    padding: 8px 15px;
    border-right: 1px solid var(--color-border);
    color: var(--color-primary-blue);
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.pagination .page-link:last-child {
    border-right: none;
}

.pagination .page-link:hover {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
}

.pagination .current {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
    font-weight: 600;
}

/* Detail Page Specifics */
.detail-page .page-title {
    font-size: var(--font-size-xxl);
    color: var(--color-dark-blue);
    margin-bottom: var(--spacing-xs);
}

.detail-page .page-label {
    font-size: var(--font-size-lg);
    color: var(--color-primary-green);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.grade-detail-header {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.grade-detail-image {
    width: 40%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.grade-header-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.grade-header-info .grade-description {
    font-size: var(--font-size-base);
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.subjects-section h2,
.rewards-section h2 {
    font-size: var(--font-size-xl);
    color: var(--color-dark-blue);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-vibrant-green);
    padding-bottom: 10px;
}

/* Featured Students */
.featured-student-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px dashed var(--color-border);
}

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

.student-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-primary-blue);
}

.featured-student-item h4 {
    font-size: var(--font-size-base);
    color: var(--color-dark-blue);
    margin: 0;
}

.featured-student-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin: 0;
}

.featured-student-item p:last-of-type {
    font-style: italic;
    color: var(--color-primary-blue);
    /* Or another highlight */
}

.student-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.student-points {
    font-size: var(--font-size-sm);
    color: #333;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.student-badge {
    display: inline-block;
    font-size: var(--font-size-xs);
    padding: 4px 8px;
    border-radius: 12px;
    background-color: var(--color-primary-blue);
    color: white;
    font-weight: bold;
    margin-top: 2px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.student-country {
    font-size: var(--font-size-xs);
    color: #777;
    margin-top: 2px;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Optional: per-badge colors */
.badge-rookie {
    background: #ccc;
}

.badge-fastrising-star {
    background: #9ac;
}

.badge-ruby-star {
    background: #c44;
}

.badge-bronze-star {
    background: #cd7f32;
}

.badge-emerald-star {
    background: #50c878;
}

.badge-sapphire-star {
    background: #0f52ba;
}

.badge-gold-star {
    background: #ffd700;
}

.badge-diamond-star {
    background: #b9f2ff;
}

.badge-platinum-star {
    background: #e5e4e2;
}

.badge-legend {
    background: #800080;
}


/* Rewards Section */
.rewards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.reward-item {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08);
    padding: var(--spacing-md);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.reward-image {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
}

.reward-item h4 {
    color: var(--color-dark-blue);
    margin-bottom: var(--spacing-xs);
}

.reward-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    flex-grow: 1;
}

.reward-date {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
    display: block;
}

/* Ads and Sponsorships */
.ad-banner-section,
.sponsorship-section {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.ad-banner-section .section-title,
.sponsorship-section .section-title {
    font-size: var(--font-size-xl);
    color: var(--color-primary-green);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-accent-yellow);
    display: inline-block;
    /* To make border only below title */
    padding-bottom: 5px;
}

.ad-item {
    display: block;
    margin: var(--spacing-md) auto;
    max-width: 728px;
    /* Standard banner width */
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.ad-item .ad-image {
    width: 100%;
    height: auto;
    display: block;
}

.ad-item .ad-label {
    position: absolute;
    top: 5px;
    right: 5px;
    background-color: rgba(0, 0, 0, 0.6);
    color: var(--color-white);
    padding: 3px 8px;
    font-size: 0.7rem;
    border-radius: 4px;
    z-index: 10;
}

.placeholder-ad {
    background-color: var(--color-background-dark);
    color: var(--color-text-light);
    padding: var(--spacing-xl);
    border: 2px dashed var(--color-border);
    font-style: italic;
    min-height: 90px;
    /* For banners */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-md);
}

.google-adsense-block {
    margin: var(--spacing-md) auto;
    text-align: center;
    border: 1px dashed var(--color-border);
    padding: var(--spacing-md);
    background-color: var(--color-background-dark);
    border-radius: var(--border-radius);
    position: relative;
}

.google-adsense-block .ad-label {
    position: absolute;
    top: 5px;
    right: 5px;
    background-color: rgba(0, 0, 0, 0.6);
    color: var(--color-white);
    padding: 3px 8px;
    font-size: 0.7rem;
    border-radius: 4px;
    z-index: 10;
}


.sponsors-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.sponsor-item {
    text-align: center;
    padding: var(--spacing-sm);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: box-shadow 0.3s ease;
}

.sponsor-item:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.sponsor-item .sponsor-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--color-text-dark);
}

.sponsor-logo {
    max-width: 100px;
    max-height: 60px;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
}

.placeholder-sponsor {
    width: 100px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-background-dark);
    color: var(--color-text-light);
    font-style: italic;
    border: 1px dashed var(--color-border);
    margin-bottom: var(--spacing-sm);
}

.sponsor-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

/* Footer */
.footer {
    background-color: var(--color-dark-blue);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: auto;
    /* Pushes footer to the bottom */
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary-blue);
    border-bottom: 2px solid var(--color-primary-blue);
    padding-bottom: 8px;
    display: inline-block;
}

.footer-section p,
.footer-section li {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
}

.footer-section ul {
    padding: 0;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-section a:hover {
    color: var(--color-white);
}

.social-icons a {
    color: var(--color-white);
    font-size: var(--font-size-xl);
    margin-right: var(--spacing-sm);
    transition: color 0.3s ease;
}

.social-icons a:hover {
    color: var(--color-primary-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}


/* Mobile Specific Styles */
@media (max-width: 768px) {

    .navbar .nav-links,
    .navbar .search-bar,
    .desktop-only {
        display: none;
        /* Hide on mobile */
    }

    .navbar .hamburger-menu {
        display: block;
        /* Show hamburger on mobile */
    }

    .navbar .logo {
        font-size: var(--font-size-md);
    }

    .navbar .logo img {
        height: 30px;
    }

    #main-content {
        padding: var(--spacing-md) 0;
        /* Adjust padding for mobile */
    }

    .content-wrapper {
        flex-direction: column;
        /* Stack main content and sidebars vertically */
        padding: 0 var(--spacing-sm);
        /* Adjust overall padding */
    }

    .main-content {
        padding-right: 0;
    }

    .sidebar {
        border-left: none;
        border-right: none;
        padding-left: 0;
        padding-right: 0;
        margin-top: var(--spacing-lg);
        /* Space from main content */
    }

    .grade-list-grid.mobile-grid {
        grid-template-columns: 1fr;
        /* Single column for grades on mobile */
    }

    .grade-card,
    .subject-card {
        flex-direction: row;
        /* Horizontal layout for cards on mobile */
        align-items: center;
    }

    .grade-image,
    .subject-image {
        width: 120px;
        height: 120px;
        flex-shrink: 0;
        border-radius: var(--border-radius);
        /* Apply border-radius to images */
        margin-right: var(--spacing-sm);
    }

    .grade-info,
    .subject-info {
        padding: var(--spacing-sm);
    }

    .grade-detail-header {
        flex-direction: column;
    }

    .grade-detail-image {
        width: 100%;
        height: 200px;
        margin-bottom: var(--spacing-md);
    }

    .sponsors-grid.mobile-sponsors-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        justify-content: space-around;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        /* Stack footer sections */
        text-align: center;
    }

    .footer-section h3 {
        width: fit-content;
        /* Center align border */
        margin-left: auto;
        margin-right: auto;
    }

    /* Mobile Sidebar / Drawer */
    .mobile-sidebar {
        position: fixed;
        top: 0;
        right: -300px;
        /* Start off-screen */
        width: 280px;
        height: 100%;
        background-color: var(--color-background-light);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.2);
        z-index: 2000;
        transition: right 0.3s ease-in-out;
        overflow-y: auto;
        padding: var(--spacing-md);
        display: block;
        /* Always visible but off-screen */
    }

    .mobile-sidebar.open {
        right: 0;
        /* Slide in */
    }

    .close-sidebar {
        position: absolute;
        top: 10px;
        left: 10px;
        background: none;
        border: none;
        font-size: var(--font-size-xl);
        color: var(--color-text-dark);
        cursor: pointer;
        padding: 5px;
    }

    .mobile-only {
        display: block;
        /* Ensure this is visible on mobile */
    }
}

/* ===== Popular Courses ===== */
.popular-courses .course-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.course-item {
    position: relative;
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.2s ease;
}

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

.course-item:hover {
    background-color: #f9f9f9;
}

.course-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
}

.course-rank {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    border-radius: 6px;
    font-size: 12px;
    font-weight: bold;
    flex-shrink: 0;
}

.course-item:nth-child(1) .course-rank {
    background: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 100%);
}

.course-item:nth-child(2) .course-rank {
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
}

.course-item:nth-child(3) .course-rank {
    background: linear-gradient(135deg, #ffc3a0 0%, #ffafbd 100%);
}

.course-content {
    flex-grow: 1;
    min-width: 0;
    /* For text truncation */
}

.course-title {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 4px 0;
    color: #2c3e50;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.course-meta {
    display: flex;
    gap: 10px;
    font-size: 12px;
    color: #7f8c8d;
}

.course-meta i {
    margin-right: 3px;
}

.quiz-badge {
    color: #f39c12;
    font-size: 14px;
    flex-shrink: 0;
}

.has-quiz .course-title {
    font-weight: 700;
}

/* === DEFER NON-CRITICAL ANIMATIONS === */
@media (prefers-reduced-motion: no-preference) {
    .app-card:hover {
        transform: translateY(-4px);
    }

    .nav-link:hover {
        transform: translateX(4px);
    }

    /* Add other animations here */
}

/* === OPTIMIZE IMAGES === */
.card-image img,
.grade-image,
.subject-image {
    content-visibility: auto;
    loading: lazy;
}