/* ============================================
   Realtors Academy - Portal Stylesheet
   Dark/Light theme via CSS custom properties
   ============================================ */

/* --- Theme Variables --- */
:root {
    /* Colors */
    --bg: #f5f6f8;
    --card-bg: #ffffff;
    --text: #1a1a2e;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border: #e5e7eb;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #bfdbfe;
    --sidebar-bg: #e5e5e5;
    --topbar-bg: #ffffff;
    --correct: #16a34a;
    --correct-light: #dcfce7;
    --incorrect: #dc2626;
    --incorrect-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --purple: #7c3aed;
    --purple-light: #ede9fe;
    --primary-dark: #1e3a8a;

    /* Type Scale */
    --font-3xs: 12px;
    --font-2xs: 13px;
    --font-xs: 14px;
    --font-sm: 15px;
    --font-md: 16px;
    --font-lg: 18px;
    --font-xl: 20px;
    --font-2xl: 22px;
    --font-3xl: 26px;
    --font-4xl: 30px;
    --font-5xl: 44px;

    /* Font Weights */
    --weight-normal: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 999px;
}

[data-theme="dark"] {
    --bg: #3a3a50;
    --card-bg: #424258;
    --text: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #7a7a88;
    --border: #50506a;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: #1e3a5f;
    --sidebar-bg: #1a1a2a;
    --topbar-bg: #2a2a3a;
    --correct: #22c55e;
    --correct-light: rgba(34, 197, 94, 0.15);
    --incorrect: #ef4444;
    --incorrect-light: rgba(239, 68, 68, 0.15);
    --warning: #fbbf24;
    --warning-light: rgba(251, 191, 36, 0.15);
    --purple: #a78bfa;
    --purple-light: rgba(124, 58, 237, 0.15);
    --primary-dark: #1e3a5f;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
        Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

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

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

/* --- Sidebar --- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    height: 100vh;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-logo {
    padding: 20px 16px;
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--text);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-logo .logo-icon {
    width: 32px;
    height: 32px;
    background-color: var(--primary);
    color: #ffffff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-md);
    flex-shrink: 0;
}

.sidebar-state-badge {
    margin: 12px 16px 0;
    padding: 6px 12px;
    background-color: var(--primary-light);
    color: var(--primary);
    border-radius: 6px;
    font-size: var(--font-xs);
    font-weight: 600;
    text-align: center;
}

.sidebar-nav {
    flex: 1;
    padding: 8px 0;
    overflow-y: auto;
}

.sidebar-nav .nav-section {
    padding: 16px 16px 4px;
}

.sidebar-nav .nav-label {
    font-size: var(--font-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--text-secondary);
    font-size: var(--font-lg);
    font-weight: 500;
    border-radius: 6px;
    margin: 2px 8px;
    transition: background-color 0.15s, color 0.15s;
    text-decoration: none;
}

.sidebar-nav .nav-link:hover {
    background-color: var(--border);
    color: var(--text);
    text-decoration: none;
}

.sidebar-nav .nav-link.active {
    background-color: var(--primary);
    color: #ffffff;
}

.sidebar-nav .nav-link .nav-icon {
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

/* Sidebar user info at bottom */
.sidebar-user {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-user .user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-sm);
    flex-shrink: 0;
}

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

.sidebar-user .user-name {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user .user-email {
    font-size: var(--font-2xs);
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user .logout-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    font-size: var(--font-lg);
    transition: color 0.15s;
}

.sidebar-user .logout-btn:hover {
    color: var(--incorrect);
}

/* --- Top Bar --- */
.topbar {
    position: fixed;
    top: 0;
    left: 250px;
    right: 0;
    height: 56px;
    background-color: var(--topbar-bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 90;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-mobile-logo {
    display: none;
    text-decoration: none;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.hamburger-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: var(--font-3xl);
    cursor: pointer;
    padding: 4px;
}

.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 8px;
    font-size: var(--font-lg);
    transition: background-color 0.15s, color 0.15s;
}

.theme-toggle-btn:hover {
    background-color: var(--border);
    color: var(--text);
}

.user-menu {
    position: relative;
}

.user-menu-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 4px 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
    font-size: var(--font-sm);
    font-weight: 500;
    transition: background-color 0.15s;
}

.user-menu-btn:hover {
    background-color: var(--border);
}

.user-menu-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 4px;
    min-width: 180px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    z-index: 200;
}

.user-menu-dropdown.open {
    display: block;
}

.user-menu-dropdown a,
.user-menu-dropdown button {
    display: block;
    width: 100%;
    text-align: left;
    padding: 8px 12px;
    font-size: var(--font-sm);
    color: var(--text);
    background: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    text-decoration: none;
}

.user-menu-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-xs);
    flex-shrink: 0;
}

.user-menu-name {
    display: inline;
}

.dropdown-header {
    padding: 10px 12px;
    background-color: var(--bg);
    border-radius: 6px 6px 0 0;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--border);
    margin: 4px 0;
}

.user-menu-dropdown .logout-item {
    color: var(--incorrect);
}

.user-menu-dropdown .logout-item:hover {
    background-color: rgba(220, 38, 38, 0.1);
}

.user-menu-dropdown a:hover,
.user-menu-dropdown button:hover {
    background-color: var(--border);
    text-decoration: none;
}

/* --- Main Content --- */
.main-content {
    margin-left: 250px;
    padding: 80px 24px 24px;
    min-height: 100vh;
}

/* --- Cards --- */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.card-title {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: var(--font-md);
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: background-color 0.15s, color 0.15s, box-shadow 0.15s;
    text-decoration: none;
    line-height: 1.4;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    text-decoration: none;
}

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

.btn-secondary:hover {
    background-color: var(--border);
    text-decoration: none;
}

.btn-sm {
    padding: 6px 14px;
    font-size: var(--font-sm);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* --- Form Elements --- */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}

.form-input,
.form-select {
    width: 100%;
    padding: 10px 14px;
    font-size: var(--font-md);
    color: var(--text);
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: border-color 0.15s, box-shadow 0.15s;
    outline: none;
}

.form-input:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

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

/* --- Badges / Pills --- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    font-size: var(--font-xs);
    font-weight: 600;
    border-radius: 999px;
}

.badge-high {
    background-color: #fecaca;
    color: #000000;
}

.badge-medium {
    background-color: #fef08a;
    color: #000000;
}

.badge-low {
    background-color: #bbf7d0;
    color: #000000;
}

.badge-primary {
    background-color: var(--primary-light);
    color: var(--primary);
}

/* --- Tables --- */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-md);
}

th, td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    font-weight: 600;
    color: var(--text-secondary);
    background-color: var(--card-bg);
    font-size: var(--font-xs);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.03);
}

/* --- Stats Cards --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.stat-card .stat-label {
    font-size: var(--font-xs);
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.stat-card .stat-value {
    font-size: var(--font-4xl);
    font-weight: 700;
    color: var(--text);
}

.stat-card .stat-detail {
    font-size: var(--font-xs);
    color: var(--text-secondary);
    margin-top: 4px;
}

/* --- Progress Bars --- */
.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--border);
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar .progress-fill {
    height: 100%;
    background-color: var(--primary);
    border-radius: 999px;
    transition: width 0.4s ease;
}

.progress-bar .progress-fill.correct {
    background-color: var(--correct);
}

.progress-bar .progress-fill.incorrect {
    background-color: var(--incorrect);
}

/* --- Alerts --- */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: var(--font-md);
    margin-bottom: 16px;
}

.alert-success {
    background-color: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

[data-theme="dark"] .alert-success {
    background-color: rgba(34, 197, 94, 0.15);
    color: #86efac;
    border-color: rgba(34, 197, 94, 0.3);
}

[data-theme="dark"] .alert-error {
    background-color: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
    border-color: rgba(239, 68, 68, 0.3);
}

/* --- Quiz Styles --- */
.quiz-option {
    background-color: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: 10px;
    padding: 14px 18px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: border-color 0.15s, background-color 0.15s;
    font-size: var(--font-md);
    color: var(--text);
}

.quiz-option:hover {
    border-color: var(--primary);
    background-color: var(--primary-light);
}

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

.quiz-option.correct {
    border-color: var(--correct);
    background-color: rgba(22, 163, 74, 0.1);
}

.quiz-option.incorrect {
    border-color: var(--incorrect);
    background-color: rgba(220, 38, 38, 0.1);
}

/* --- Flashcard --- */
.flashcard-container {
    perspective: 1000px;
    width: 100%;
    max-width: 640px;
    height: 380px;
    margin: 0 auto;
}

.flashcard {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
    cursor: pointer;
}

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

.flashcard-face {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    background-color: var(--card-bg);
    border: 2px solid var(--primary-light);
    border-radius: 16px;
    padding: 32px 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: var(--font-xl);
    line-height: 1.6;
    color: var(--text);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

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

/* Flashcard inner elements */
.fc-label {
    font-size: var(--font-2xs);
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.fc-content {
    font-size: var(--font-xl);
    line-height: 1.6;
    font-weight: 500;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fc-flip-hint {
    font-size: var(--font-sm);
    color: var(--text-muted);
    margin-top: 16px;
}

.fc-citation {
    font-size: var(--font-xs);
    color: var(--text-muted);
    margin-top: 12px;
    font-style: italic;
}

/* Navigation row */
.fc-nav-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
    padding: 0 4px;
}

.fc-arrow-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text);
    font-size: var(--font-3xl);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.15s, border-color 0.15s;
    line-height: 1;
}

.fc-arrow-btn:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

.fc-arrow-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

/* Keyboard hints */
.fc-kbd-hints {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-xs);
    color: var(--text-muted);
}

.fc-kbd-group {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.fc-kbd-dot {
    margin: 0 4px;
}

.fc-kbd-hints kbd {
    padding: 2px 7px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: var(--font-2xs);
    font-family: inherit;
    color: var(--text-secondary);
}

/* Rating section */
.fc-rating-section {
    text-align: center;
    margin-top: 20px;
    animation: fcFadeIn 0.3s ease;
}

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

.fc-rating-prompt {
    font-size: var(--font-md);
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 500;
}

.fc-rating-buttons {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.fc-rate-btn {
    padding: 8px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: var(--font-md);
    font-weight: 600;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    transition: transform 0.1s, box-shadow 0.15s;
}

.fc-rate-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
}

.fc-rate-label { font-size: var(--font-md); }
.fc-rate-key { font-size: var(--font-3xs); opacity: 0.7; }

.fc-rate-again { background-color: var(--incorrect); }
.fc-rate-hard { background-color: var(--warning); color: #000; }
.fc-rate-good { background-color: var(--primary); }
.fc-rate-easy { background-color: var(--correct); }

@media (max-width: 640px) {
    .fc-hint-desktop { display: none; }
    .flashcard-container { height: 320px; }
    .fc-content { font-size: var(--font-lg); }
    .fc-rating-buttons { gap: 6px; }
    .fc-rate-btn { padding: 8px 12px; }
}

/* --- Study Tools (Dashboard) --- */
.study-tool-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    text-decoration: none;
    color: var(--text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.study-tool-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    text-decoration: none;
}

/* --- Study Tool Cards v2 (matching original portal) --- */
.study-tool-card-v2 {
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background-color: var(--card-bg);
    text-decoration: none;
    color: var(--text);
    transition: border-color 0.2s, box-shadow 0.2s;
    display: block;
}

.study-tool-card-v2:hover {
    border-color: var(--primary-light);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    text-decoration: none;
}

.stc-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.stc-title {
    font-size: var(--font-xl);
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text);
}

.study-tool-card-v2:hover .stc-title {
    color: var(--primary);
}

.stc-desc {
    font-size: var(--font-md);
    color: var(--text-secondary);
    line-height: 1.5;
}

@media (max-width: 1024px) {
    .study-tool-card-v2 { }
    div:has(> .study-tool-card-v2) { grid-template-columns: repeat(2, 1fr) !important; }
}

@media (max-width: 640px) {
    div:has(> .study-tool-card-v2) { grid-template-columns: 1fr !important; }
}

/* Responsive stats grid */
@media (max-width: 768px) {
    div:has(> .card[style*="padding: 16px"]) { grid-template-columns: repeat(2, 1fr) !important; }
}

/* --- Topic Cards (matching original panel style) --- */
.topic-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.topic-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--text);
    transition: box-shadow 0.2s, border-color 0.2s;
}

.topic-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
    text-decoration: none;
}

.topic-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.topic-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--primary-light);
    color: var(--primary);
    border-radius: 10px;
    font-size: var(--font-lg);
    font-weight: 700;
    flex-shrink: 0;
}

.topic-card-title {
    font-size: var(--font-lg);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
    line-height: 1.3;
}

.topic-card-desc {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
    flex: 1;
}

.topic-card-counts {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-xs);
    color: var(--text);
    margin-bottom: 14px;
    padding: 10px 14px;
    margin-left: -20px;
    margin-right: -20px;
    background-color: var(--bg);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.topic-card-actions {
    display: flex;
    gap: 8px;
}

.topic-card-btn {
    flex: 1;
    text-align: center;
}

@media (max-width: 1024px) {
    .topic-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .topic-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Topic Checkbox Grid (Quiz Selection) --- */
.topic-checkbox-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.topic-checkbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border: 1.5px solid var(--text-muted);
    border-radius: 10px;
    cursor: pointer;
    background-color: var(--surface);
    transition: border-color 0.15s, background-color 0.15s;
}

.topic-checkbox-item:hover {
    border-color: var(--primary);
    background-color: var(--primary-light);
}

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

.topic-checkbox-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    accent-color: var(--primary);
}

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

@media (max-width: 1024px) {
    .topic-checkbox-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .topic-checkbox-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        z-index: 300;
    }

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

    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 250;
    }

    .sidebar-overlay.open {
        display: block;
    }

    .topbar {
        left: 0;
    }

    .hamburger-btn {
        display: block;
    }

    .topbar-mobile-logo {
        display: flex;
    }

    .user-menu-name {
        display: none;
    }

    .main-content {
        margin-left: 0;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Login Page --- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background-color: var(--bg);
}

.login-card {
    width: 100%;
    max-width: 400px;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.login-logo {
    text-align: center;
    margin-bottom: 8px;
}

.login-logo .logo-icon {
    width: 48px;
    height: 48px;
    background-color: var(--primary);
    color: #ffffff;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-2xl);
    margin-bottom: 12px;
}

.login-title {
    text-align: center;
    font-size: var(--font-3xl);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

.login-subtitle {
    text-align: center;
    font-size: var(--font-md);
    color: var(--text-secondary);
    margin-bottom: 28px;
}

/* --- Glossary --- */
.glossary-search { position: sticky; top: 56px; z-index: 10; background: var(--bg); padding: 16px 0 12px; }
.glossary-search-input { width: 100%; padding: 12px 16px 12px 40px; font-size: var(--font-lg); border-radius: 12px; border: 1px solid var(--border); background: var(--card-bg); color: var(--text); outline: none; }
.glossary-search-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15); }
.glossary-search-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-muted); }
.alpha-bar { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 20px; }
.alpha-link { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: var(--radius-sm); font-size: var(--font-sm); font-weight: var(--weight-semibold); color: var(--text-secondary); background: var(--card-bg); border: 1px solid var(--border); text-decoration: none; cursor: pointer; transition: background 0.15s; }
.alpha-link:hover, .alpha-link.active { background: var(--primary); color: #fff; border-color: var(--primary); text-decoration: none; }
.alpha-link.empty { opacity: 0.3; cursor: default; }
.letter-heading { font-size: var(--font-3xl); font-weight: var(--weight-bold); color: var(--primary); padding: 20px 0 8px; border-bottom: 2px solid var(--border); margin-bottom: 12px; }
.glossary-entry { padding: 14px 0; border-bottom: 1px solid var(--border); }
.glossary-entry:last-child { border-bottom: none; }
.glossary-term { font-size: var(--font-xl); font-weight: var(--weight-semibold); color: var(--text); margin-bottom: 4px; }
.glossary-def { font-size: var(--font-lg); color: var(--text-secondary); line-height: 1.6; }
.glossary-meta { display: flex; align-items: center; gap: 12px; margin-top: 6px; font-size: var(--font-sm); color: var(--text-muted); }
.no-results { text-align: center; padding: 40px; color: var(--text-muted); }

/* --- Math Helper --- */
.math-tabs { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 24px; border-bottom: 2px solid var(--border); padding-bottom: 0; }
.math-tab { padding: 10px 18px; font-size: var(--font-md); font-weight: var(--weight-semibold); cursor: pointer; border: none; background: none; color: var(--text-secondary); border-bottom: 2px solid transparent; margin-bottom: -2px; transition: color 0.15s, border-color 0.15s; }
.math-tab:hover { color: var(--text); }
.math-tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.math-panel { display: none; }
.math-panel.active { display: block; }
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; max-width: 600px; }
.calc-result { margin-top: 16px; padding: 16px; background-color: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-md); }
.calc-result-row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--border); }
.calc-result-row:last-child { border-bottom: none; }
.closing-table { width: 100%; border-collapse: collapse; margin-top: 12px; table-layout: fixed; }
.closing-table th, .closing-table td { padding: 10px 12px; border: 1px solid var(--border); text-align: left; font-size: var(--font-sm); vertical-align: middle; }
.closing-table th { background-color: var(--bg); font-weight: var(--weight-semibold); font-size: var(--font-xs); text-transform: uppercase; letter-spacing: 0.03em; }
.closing-table col.col-item { width: 35%; }
.closing-table col.col-buyer, .closing-table col.col-seller { width: 25%; }
.closing-table col.col-result { width: 15%; }
.closing-radio { cursor: pointer; white-space: nowrap; margin-right: 8px; display: inline-flex; align-items: center; gap: 3px; font-size: var(--font-sm); }
.closing-radio input { margin: 0; }

/* --- Mock Exam --- */
.exam-nav-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(36px, 1fr)); gap: 4px; margin-bottom: 16px; }
.exam-nav-btn { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--card-bg); color: var(--text); font-size: var(--font-3xs); font-weight: var(--weight-semibold); cursor: pointer; display: flex; align-items: center; justify-content: center; padding: 6px 2px; min-height: 32px; }
.exam-nav-btn.current { border-color: var(--primary); background-color: var(--primary-light); }
.exam-nav-btn.answered { background-color: var(--correct); color: #fff; border-color: var(--correct); }
.exam-nav-btn.flagged { border-color: var(--warning); box-shadow: 0 0 0 2px var(--warning); }
.exam-timer { font-size: var(--font-2xl); font-weight: var(--weight-bold); font-variant-numeric: tabular-nums; }
.exam-timer.warning { color: var(--warning); }
.exam-timer.danger { color: var(--incorrect); }
.exam-intro-card { max-width: 560px; margin: 0 auto; background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 40px; text-align: center; }
.exam-stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 24px 0; }
.exam-stat-box { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px 16px; text-align: center; }
.exam-stat-value { font-size: var(--font-4xl); font-weight: var(--weight-bold); color: var(--primary); margin-bottom: 4px; }
.exam-stat-label { font-size: var(--font-sm); color: var(--text-secondary); }
.exam-rules { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px 24px; text-align: left; margin-bottom: 28px; }
.exam-rule-item { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px; font-size: var(--font-md); color: var(--text); line-height: 1.5; }
.exam-rule-item:last-child { margin-bottom: 0; }
.exam-rule-check { color: var(--primary); flex-shrink: 0; margin-top: 2px; }
.exam-start-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; width: 100%; padding: 16px 32px; border-radius: var(--radius-lg); background: var(--primary); color: #fff; font-size: var(--font-xl); font-weight: var(--weight-semibold); border: none; cursor: pointer; transition: background-color 0.15s; }
.exam-start-btn:hover { background: var(--primary-hover); }
.pause-overlay { position: fixed; inset: 0; z-index: 999; background: rgba(0,0,0,0.7); display: none; align-items: center; justify-content: center; }
.pause-overlay.active { display: flex; }

/* --- Progress Charts --- */
.chart-container { background-color: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 24px; }
.chart-scroll { overflow-x: auto; }
.chart-inner { position: relative; margin-left: 45px; min-width: 800px; }
.bar-chart { display: flex; align-items: flex-end; height: 250px; position: relative; border-bottom: 1px solid var(--border); }
.bar-chart-col { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; align-items: center; gap: 4px; height: 100%; justify-content: flex-end; padding: 0 1px; }
.bar-chart-bar { width: 65%; max-width: 32px; border-radius: 4px 4px 0 0; transition: height 0.5s ease; min-height: 2px; }
.bar-chart-value { font-size: var(--font-3xs); font-weight: var(--weight-semibold); color: var(--text); white-space: nowrap; }
.passing-line { position: absolute; left: 0; right: 0; border-top: 2px dashed var(--primary); z-index: 1; pointer-events: none; }
.passing-label { position: absolute; right: 4px; font-size: var(--font-3xs); color: var(--primary); font-weight: var(--weight-semibold); }
.y-axis { position: absolute; left: -42px; top: 0; bottom: 0; display: flex; flex-direction: column; justify-content: space-between; }
.y-axis span { font-size: var(--font-2xs); color: var(--text-muted); }
.x-axis { display: flex; margin-top: 6px; }
.x-axis-label { flex: 1 1 0; min-width: 0; text-align: center; padding: 0 1px; }
.x-axis-label span { display: block; font-size: var(--font-2xs); color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.stats-row-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-bottom: 24px; }
@media (max-width: 1024px) { .stats-row-5 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .stats-row-5 { grid-template-columns: repeat(2, 1fr); } }

/* --- Study Plan --- */
.readiness-ring { position: relative; width: 120px; height: 120px; margin: 0 auto 16px; }
.readiness-ring svg { transform: rotate(-90deg); }
.readiness-ring .value { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: var(--font-4xl); font-weight: var(--weight-bold); }
.priority-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; margin-bottom: 12px; }
.priority-badge { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 50%; font-size: var(--font-sm); font-weight: var(--weight-bold); color: #fff; flex-shrink: 0; }
.priority-badge.urgent { background: var(--incorrect); }
.priority-badge.moderate { background: var(--warning); }
.priority-badge.low { background: var(--primary); }
.rec-item { display: flex; align-items: center; gap: 8px; padding: 6px 0; font-size: var(--font-lg); color: var(--text-secondary); }
.rec-item a { color: var(--primary); font-weight: var(--weight-semibold); text-decoration: none; }
.rec-item a:hover { text-decoration: underline; }
.strong-chip { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 20px; font-size: var(--font-lg); font-weight: var(--weight-medium); background: rgba(22, 163, 74, 0.1); color: var(--correct); border: 1px solid rgba(22, 163, 74, 0.2); margin: 4px; }
.score-bar { height: 6px; border-radius: 3px; background: var(--border); overflow: hidden; flex: 1; }
.score-bar-fill { height: 100%; border-radius: 3px; transition: width 0.5s; }
.not-started-tag { font-size: var(--font-xs); font-weight: var(--weight-semibold); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* --- Utility Classes --- */
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: 4px; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.grid { display: grid; }
.mb-4 { margin-bottom: 4px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
/* Spacing — additional */
.mb-32 { margin-bottom: 32px; }
.mt-4 { margin-top: 4px; }
.mt-12 { margin-top: 12px; }
.mt-32 { margin-top: 32px; }
.p-16 { padding: 16px; }
.p-24 { padding: 24px; }

/* Text alignment */
.text-center { text-align: center; }

/* Type scale classes */
.text-3xs { font-size: var(--font-3xs); }
.text-2xs { font-size: var(--font-2xs); }
.text-xs { font-size: var(--font-xs); }
.text-sm { font-size: var(--font-sm); }
.text-md { font-size: var(--font-md); }
.text-lg { font-size: var(--font-lg); }
.text-xl { font-size: var(--font-xl); }
.text-2xl { font-size: var(--font-2xl); }
.text-3xl { font-size: var(--font-3xl); }
.text-4xl { font-size: var(--font-4xl); }
.text-5xl { font-size: var(--font-5xl); }

/* Text colors */
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }

/* Font weights */
.font-normal { font-weight: var(--weight-normal); }
.font-medium { font-weight: var(--weight-medium); }
.font-semibold { font-weight: var(--weight-semibold); }
.font-bold { font-weight: var(--weight-bold); }

/* Display & layout */
.block { display: block; }
.inline-flex { display: inline-flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-1 { flex: 1; min-width: 0; }
.shrink-0 { flex-shrink: 0; }
.w-full { width: 100%; }
.hidden { display: none; }
.relative { position: relative; }
.cursor-pointer { cursor: pointer; }
.no-wrap { white-space: nowrap; }

/* Additional spacing */
.p-12 { padding: 12px; }
.p-20 { padding: 20px; }
.p-32 { padding: 32px; }
.p-40 { padding: 40px; }
.px-16 { padding-left: 16px; padding-right: 16px; }
.py-12 { padding-top: 12px; padding-bottom: 12px; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; }
.mb-6 { margin-bottom: 6px; }
.mb-20 { margin-bottom: 20px; }
.gap-6 { gap: 6px; }
.gap-20 { gap: 20px; }

/* Max-width constraints */
.max-w-400 { max-width: 400px; }
.max-w-500 { max-width: 500px; }
.max-w-600 { max-width: 600px; }
.max-w-640 { max-width: 640px; }
.max-w-700 { max-width: 700px; }
.max-w-720 { max-width: 720px; }
.max-w-800 { max-width: 800px; }

/* Text alignment */
.text-right { text-align: right; }
.text-left { text-align: left; }

/* Text colors */
.text-primary { color: var(--primary); }
.text-correct { color: var(--correct); }
.text-incorrect { color: var(--incorrect); }
.text-warning { color: var(--warning); }
.text-white { color: #fff; }

/* Text styling */
.no-decoration { text-decoration: none; }
.uppercase { text-transform: uppercase; }
.italic { font-style: italic; }
.capitalize { text-transform: capitalize; }
.leading-snug { line-height: 1.2; }
.leading-normal { line-height: 1.5; }
.leading-relaxed { line-height: 1.6; }
.leading-loose { line-height: 1.7; }
.tracking-wide { letter-spacing: 0.08em; }

/* Border & radius */
.rounded-6 { border-radius: 6px; }
.rounded-8 { border-radius: 8px; }
.rounded-10 { border-radius: 10px; }
.rounded-12 { border-radius: 12px; }
.rounded-16 { border-radius: 16px; }
.rounded-full { border-radius: 50%; }
.border { border: 1px solid var(--border); }
.border-top { border-top: 1px solid var(--border); }

/* Icon sizes */
.icon-xs { width: 10px; height: 10px; }
.icon-sm { width: 14px; height: 14px; }
.icon-md { width: 16px; height: 16px; }
.icon-lg { width: 18px; height: 18px; }
.icon-xl { width: 20px; height: 20px; }
.icon-2xl { width: 24px; height: 24px; }
.icon-3xl { width: 28px; height: 28px; }
.icon-4xl { width: 40px; height: 40px; }

/* --- Component: Section label (uppercase muted heading) --- */
.section-label {
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 12px;
}

/* --- Component: Form field label (block, semibold) --- */
.field-label {
    display: block;
    font-weight: var(--weight-semibold);
    margin-bottom: 6px;
}

/* --- Component: Profile info label --- */
.info-label {
    display: block;
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

/* --- Component: Styled text input --- */
.input-styled {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg);
    color: var(--text);
}

/* --- Component: Back link --- */
.back-link {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* --- Component: Explain panel (quiz/mock exam) --- */
.explain-panel {
    margin-top: 16px;
    padding: 16px;
    border-radius: 8px;
    background-color: var(--bg);
    border: 1px solid var(--border);
}
.explain-text {
    margin-top: 8px;
    padding: 12px;
    border-radius: 8px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    line-height: 1.7;
    white-space: pre-wrap;
}
.btn-explain-toggle {
    padding: 4px 12px;
    border: 1px solid var(--primary);
    color: var(--primary);
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
}

/* --- Component: Icon box (centered icon container) --- */
.icon-box {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
}
.icon-box-lg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    font-weight: var(--weight-bold);
}
.icon-box-xl {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 16px;
}

/* --- Component: Status dot (topic mastery indicators) --- */
.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}
.status-dot-red { background-color: var(--incorrect); }
.status-dot-yellow { background-color: var(--warning); }
.status-dot-green { background-color: var(--correct); }

/* --- Component: List with disc markers --- */
.list-disc { list-style: disc; padding-left: 20px; }
.list-none { list-style: none; padding: 0; margin: 0; }

/* --- Component: State icon (settings) --- */
.state-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    font-weight: var(--weight-bold);
}

/* --- Component: Error / empty state page --- */
.error-page {
    text-align: center;
    padding: 60px 20px;
}
.empty-state {
    max-width: 500px;
    margin: 40px auto;
    padding: 40px;
}

/* --- Component: Mock exam extras --- */
.exam-intro-icon { background-color: var(--primary-light); color: var(--primary); }
.exam-back-link { color: var(--text); }
.btn-end-exam { background-color: var(--incorrect); color: #fff; }
.pause-dialog { max-width: 400px; padding: 32px; }
.pause-resume-btn { padding: 12px 32px; border-radius: 10px; }

/* --- Component: Study plan extras --- */
.plan-weight-label { margin-left: 6px; }
.plan-passing-mark { width: 32px; text-align: right; }
.font-normal { font-weight: var(--weight-normal); }

/* --- Component: Flashcard session extras --- */
.fc-complete-card { max-width: 500px; margin: 0 auto; padding: 40px; }
.fc-complete-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 24px; }
.fc-complete-breakdown { margin-bottom: 24px; text-align: left; }

/* --- Component: Progress page extras --- */
.passing-label-pos { top: -14px; }
.progress-score-label { width: 45px; text-align: right; color: var(--primary); }
.badge-quiz { background-color: var(--border); color: var(--text); }

/* --- Component: Settings extras --- */
.accent-primary { accent-color: var(--primary); }
.btn-save-prefs { padding: 10px 20px; }
.state-form { margin: 0; }
.state-icon-inactive { background-color: var(--border); color: var(--text-muted); }

/* --- Component: Study guide extras --- */
.guide-badge-number { min-width: 28px; justify-content: center; }
.guide-math-card { background: var(--bg); }
.guide-math-steps { padding-left: 20px; }

/* --- Component: Quiz select extras --- */
.quiz-start-btn {
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: var(--weight-semibold);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.quiz-divider { border: none; border-top: 2px solid var(--border); margin: 32px 0; }
.quiz-length-select { width: auto; min-width: 100px; }

/* --- Component: Flashcard deck extras --- */
.fc-deck-card { cursor: default; }
.fc-total-label { opacity: 0.8; }

/* --- Component: Topic card link color --- */
.topic-card-title.no-decoration { color: var(--text); }

/* --- Component: Results summary (quiz/mock exam/flashcards) --- */
.results-container { max-width: 720px; margin: 0 auto; }
.results-bar { height: 12px; }

/* --- Component: Dashboard hero --- */
.hero-section {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-hover) 100%);
    color: #fff;
    margin: -24px -24px 0 -24px;
    padding: 0;
}
.hero-overlay { position: absolute; inset: 0; opacity: 0.1; }
.hero-circle-lg {
    position: absolute;
    top: 0;
    right: 0;
    width: 384px;
    height: 384px;
    background: #fff;
    border-radius: 50%;
    transform: translate(33%, -50%);
}
.hero-circle-sm {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 256px;
    height: 256px;
    background: #fff;
    border-radius: 50%;
    transform: translate(-25%, 33%);
}
.hero-content {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 64px 24px;
}
.hero-text-wrap { max-width: 640px; }
.hero-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 12px;
    background: #fff;
    color: var(--primary-dark);
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.hero-btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 12px;
    background: rgba(255,255,255,0.15);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.25);
    text-decoration: none;
}
.hero-subtitle { color: rgba(255,255,255,0.85); }
.dashboard-body { padding-top: 40px; }

/* --- Component: Focus areas (dashboard) --- */
.focus-priority-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    color: #fff;
    background: var(--incorrect);
    flex-shrink: 0;
}
.focus-bar-track {
    flex: 1;
    height: 4px;
    border-radius: 2px;
    background: var(--border);
    overflow: hidden;
}
.focus-bar-fill { height: 100%; border-radius: 2px; }
.focus-practice-link {
    display: block;
    margin-top: 8px;
    color: var(--primary);
    text-decoration: none;
}

/* --- Component: QOTD date alignment --- */
.qotd-date { margin-left: auto; }

/* --- Component: Dashboard stat card icon --- */
.stat-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
}
.stat-icon-streak { background-color: var(--primary-light); color: var(--primary); }
.stat-icon-mastery { background-color: var(--correct-light); color: var(--correct); }
.stat-icon-focus { background-color: var(--incorrect-light); color: var(--incorrect); }
.stat-icon-cards { background-color: var(--purple-light); color: var(--purple); }
.stat-icon-due { background-color: var(--warning-light); color: var(--warning); }
.stat-icon-guide { background-color: var(--correct-light); color: var(--correct); }

/* --- Component: QOTD section --- */
.qotd-section {
    margin-top: 16px;
    padding: 16px;
    border-radius: 8px;
    background-color: var(--bg);
    border: 1px solid var(--border);
}
.qotd-ai-text {
    margin-top: 8px;
    padding: 12px;
    border-radius: 8px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    line-height: 1.7;
    white-space: pre-wrap;
}

/* --- Component: Flashcard session --- */
.fc-session-wrap { max-width: 700px; margin: 0 auto; }
.fc-face-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

/* --- Component: Settings radio group --- */
.radio-group { display: flex; gap: 16px; }
.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text);
}

/* --- Component: State list --- */
.state-list { display: flex; flex-direction: column; gap: 8px; }
.state-card {
    padding: 12px 16px;
    border-radius: 12px;
    background-color: var(--bg);
    border: 1px solid var(--border);
}
.state-btn {
    padding: 6px 12px;
    border-radius: 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
}
.state-btn-ghost {
    padding: 6px 12px;
    border-radius: 8px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
}

/* --- Component: Topic detail --- */
.topic-number-badge { background-color: var(--primary-light); color: var(--text); }
.badge-weight { padding: 6px 16px; }
.statute-card { padding: 20px 24px; }
.statute-item { color: var(--text); }
.topic-icon-questions { background-color: var(--primary-light); }
.topic-icon-flashcards { background-color: var(--correct-light); }
.topic-action-btn {
    flex: 1;
    padding: 14px 24px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.topic-action-btn.btn-primary { box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.topic-action-btn-outline { border-width: 2px; }

/* --- Component: Alert banner (settings success) --- */
.alert-success {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-radius: 8px;
    background-color: var(--correct-light);
    color: var(--correct);
    border: 1px solid var(--correct);
    font-weight: var(--weight-medium);
    margin-bottom: 24px;
}

/* --- Component: Progress topic row --- */
.progress-topic-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.progress-bar-wrap { width: 120px; }
.progress-bar-sm { height: 6px; }

/* --- Component: Disclaimer footer --- */
.disclaimer-footer {
    flex-shrink: 0;
    padding: 32px 24px;
    border-top: 1px solid var(--border);
    text-align: center;
    margin-top: 48px;
}
.disclaimer-text {
    line-height: 1.6;
    color: var(--text-muted);
    max-width: 720px;
    margin: 0 auto 16px;
}
.main-content-inner { flex: 1 0 auto; }
.logo-icon-sm { width: 28px; height: 28px; }

/* --- Component: Error page button --- */
.error-page-btn { padding: 12px 24px; border-radius: 12px; }

/* --- Dashboard Grids --- */
.dashboard-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.dashboard-focus-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.dashboard-tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* --- Topic Detail Stats --- */
.topic-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 32px;
}

/* --- Mock Exam Layout --- */
.exam-layout {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.exam-question-panel {
    flex: 1;
    min-width: 0;
}
.exam-nav-panel {
    width: 280px;
    flex-shrink: 0;
}

/* --- Responsive: Tablet (1024px) --- */
@media (max-width: 1024px) {
    .dashboard-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .dashboard-tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* --- Responsive: Mobile (640px) --- */
@media (max-width: 640px) {
    .dashboard-stats-grid {
        grid-template-columns: 1fr;
    }
    .dashboard-focus-grid {
        grid-template-columns: 1fr;
    }
    .dashboard-tools-grid {
        grid-template-columns: 1fr;
    }
    .topic-stats-grid {
        grid-template-columns: 1fr;
    }
    .exam-layout {
        flex-direction: column;
    }
    .exam-nav-panel {
        width: 100%;
    }
    /* Smaller hero heading on mobile */
    .text-5xl {
        font-size: var(--font-3xl);
    }
}