@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
    /* Dark Theme Variables (Default) */
    --bg-main: #090d16;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-card-hover: rgba(31, 41, 55, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(99, 102, 241, 0.15);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-primary-light: rgba(99, 102, 241, 0.15);
    
    --color-success: #10b981;
    --color-success-light: rgba(16, 185, 129, 0.15);
    
    --color-error: #ef4444;
    --color-error-light: rgba(239, 68, 68, 0.15);
    
    --color-accent: #f59e0b;
    --color-accent-light: rgba(245, 158, 11, 0.1);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.25);
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    /* Light Theme Variables */
    --bg-main: #f8fafc;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-card-hover: rgba(241, 245, 249, 0.9);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-glow: rgba(37, 99, 235, 0.1);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: rgba(37, 99, 235, 0.1);
    
    --color-success: #059669;
    --color-success-light: rgba(5, 150, 105, 0.1);
    
    --color-error: #dc2626;
    --color-error-light: rgba(220, 38, 38, 0.1);
    
    --color-accent: #d97706;
    --color-accent-light: rgba(217, 119, 6, 0.1);
    
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.15);
}

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

body {
    font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

/* Glassmorphism Styles */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-normal);
}

.glass-panel:hover {
    border-color: var(--border-glow);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(var(--bg-main), 0.7);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-brand span {
    color: var(--text-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Base Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.9rem;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--color-primary);
}

.btn-icon {
    padding: 0.6rem;
    border-radius: 50%;
    aspect-ratio: 1;
}

/* User Account Info */
.user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-card-hover);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.user-avatar {
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
}

/* Layout Containers */
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

/* Tab Navigation */
.tabs-container {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.6rem 1.2rem;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--transition-fast);
    border-bottom: 2px solid transparent;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* Panel Containers */
.tab-panel {
    display: none;
    animation: fadeIn var(--transition-fast) ease-out;
}

.tab-panel.active {
    display: block;
}

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

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.primary { background: var(--color-primary-light); color: var(--color-primary); }
.stat-icon.success { background: var(--color-success-light); color: var(--color-success); }
.stat-icon.error { background: var(--color-error-light); color: var(--color-error); }
.stat-icon.accent { background: var(--color-accent-light); color: var(--color-accent); }

.stat-val {
    font-family: 'Outfit', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.1;
    margin-top: 0.25rem;
}

/* Charts and Reports Section */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    align-items: start;
    margin-bottom: 2rem;
}

@media (max-width: 900px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

.chart-card, .leaderboard-card {
    padding: 1.5rem;
}

.chart-card h3, .leaderboard-card h3 {
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Leaderboard */
.leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.leaderboard-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
}

.leaderboard-item.current-user {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.user-rank {
    width: 24px;
    font-weight: 800;
    color: var(--color-accent);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-grow: 1;
}

.user-score {
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
}

/* Practice Grid */
.practice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.practice-card {
    padding: 1.5rem;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
    position: relative;
    overflow: hidden;
}

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

.practice-card.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.practice-card.disabled:hover {
    transform: none;
    border-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.card-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--color-accent-light);
    color: var(--color-accent);
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
}

.practice-card.disabled .card-badge {
    background: var(--border-color);
    color: var(--text-secondary);
}

.card-icon {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.practice-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.practice-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.4;
}

/* Navigation Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.breadcrumbs a {
    color: var(--color-primary);
    text-decoration: none;
}

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

/* Unit and Topic Select Panels */
.selection-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
    margin-top: 1rem;
}

.selection-item {
    padding: 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.selection-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--color-primary);
    transform: translateX(4px);
}

.selection-title {
    font-weight: 600;
    font-size: 1rem;
}

.selection-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Quiz Interface */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
}

.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.question-card {
    padding: 2rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.question-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.question-tag {
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 0.3rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
}

.save-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 500;
    font-size: 0.85rem;
    transition: color var(--transition-fast);
}

.save-btn:hover {
    color: var(--color-accent);
}

.question-text {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.q-number-prefix {
    color: var(--color-primary);
    font-weight: 700;
}

/* Matching Table Style */
.matching-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1rem 0 1.25rem 0;
    font-size: 0.93rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.05);
}

.matching-table th {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(139, 92, 246, 0.12));
    color: var(--color-primary);
    text-align: left;
    padding: 0.8rem 1.1rem;
    font-weight: 700;
    font-size: 0.88rem;
    letter-spacing: 0.03em;
    border-bottom: 2px solid rgba(99, 102, 241, 0.25);
}

.matching-table th:first-child {
    border-right: 1px solid rgba(99, 102, 241, 0.15);
}

.matching-table td {
    padding: 0.75rem 1.1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: top;
    line-height: 1.55;
}

.matching-table td:first-child {
    border-right: 1px solid var(--border-color);
    font-weight: 500;
    width: 48%;
    color: var(--color-accent);
}

.matching-table tr:last-child td {
    border-bottom: none;
}

.matching-table tr:hover td {
    background: rgba(99, 102, 241, 0.06);
    transition: background 0.2s ease;
}

.matching-table tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.015);
}

/* Statement content */
.question-stmt-content, .question-intro, .question-trailer {
    line-height: 1.6;
}

.question-trailer {
    margin-top: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: rgba(99, 102, 241, 0.06);
    border-left: 3px solid var(--color-primary);
    border-radius: 0 6px 6px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.option-item {
    display: flex;
    align-items: center;
    padding: 1rem 1.25rem;
    border-radius: 12px;
    border: 1.5px solid var(--border-color);
    background: rgba(255, 255, 255, 0.01);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.option-item:hover {
    border-color: var(--color-primary);
    background: var(--bg-card-hover);
}

.option-item.selected {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.option-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    font-weight: 700;
    margin-right: 1rem;
    font-size: 0.85rem;
}

/* Feedback states */
.option-item.correct {
    border-color: var(--color-success);
    background: var(--color-success-light);
}

.option-item.correct .option-letter {
    background: var(--color-success);
    color: white;
    border-color: var(--color-success);
}

.option-item.incorrect {
    border-color: var(--color-error);
    background: var(--color-error-light);
}

.option-item.incorrect .option-letter {
    background: var(--color-error);
    color: white;
    border-color: var(--color-error);
}

/* Explanation Panel */
.explanation-panel {
    margin-top: 1.5rem;
    padding: 1.5rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
    border-left: 4px solid var(--color-success);
    animation: slideDown var(--transition-fast) ease-out;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.explanation-title {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--color-success);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.explanation-text {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Pagination / Footer buttons */
.quiz-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 1.5rem;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    z-index: 1000;
    transition: opacity var(--transition-fast) ease;
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    width: 90%;
    max-width: 400px;
    padding: 2.25rem;
    position: relative;
    transform: scale(0.95);
    transition: transform var(--transition-fast) ease;
    box-shadow: var(--shadow-md);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
}

.modal-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.modal-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.modal-footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

/* Popup Notifications */
.popup-notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--color-accent);
    box-shadow: var(--shadow-md);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    backdrop-filter: blur(16px);
    transform: translateY(150%);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.popup-notification.active {
    transform: translateY(0);
}

.popup-icon {
    font-size: 1.25rem;
    color: var(--color-accent);
}

.popup-message {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.coming-soon-ribbon {
    position: absolute;
    top: 10px;
    left: -35px;
    background: var(--text-muted);
    color: white;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 0.2rem 2.5rem;
    transform: rotate(-45deg);
    text-transform: uppercase;
}

/* Utility layout helper */
.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Feature Highlights Bar */
.feature-highlights-bar {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow-sm);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.highlight-item i {
    font-size: 1.35rem;
    color: var(--color-primary);
}

@media (max-width: 768px) {
    .feature-highlights-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding: 1rem 1.25rem;
    }
}

/* ===== ForumIAS Test Papers Section Styling ===== */
.forumias-tests-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

@media (min-width: 992px) {
    .forumias-tests-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.forumias-test-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.test-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.test-no-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.test-meta-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.test-badge {
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.test-badge.code {
    background: var(--color-accent-light);
    color: var(--color-accent);
}

.test-badge.date {
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
}

.test-badge.pattern {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.test-card-body {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.test-info-row {
    font-size: 0.9rem;
    line-height: 1.5;
}

.test-info-label {
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.2rem;
}

.test-subject-val {
    color: var(--text-primary);
    font-weight: 600;
}

.test-syllabus-val {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 0.6rem 0.85rem;
    border-radius: 8px;
    font-size: 0.85rem;
    white-space: pre-wrap;
}

.test-references-val {
    color: var(--text-secondary);
    font-size: 0.85rem;
    white-space: pre-wrap;
    border-left: 3px solid var(--color-primary);
    padding-left: 0.6rem;
}