/* ========================================
   Rich Educational Content Styles
   Styles for: lessons, stats, tips, reflection, examples, etc.
   ======================================== */

/* ===== Rich Intro ===== */
.rich-intro-text {
    font-size: 1.05rem;
    color: var(--gray-light);
    line-height: 2;
    margin-bottom: 20px;
    padding: 20px 24px;
    background: rgba(30,41,59,0.3);
    border-radius: var(--radius-md);
    border-right: 3px solid var(--primary-light);
}

.rich-highlight-box {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(6,182,212,0.06));
    border: 1px solid rgba(99,102,241,0.15);
    border-radius: var(--radius-md);
    margin-top: 16px;
}

.rich-highlight-box i {
    color: var(--primary-light);
    font-size: 1.4rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.rich-highlight-box p {
    color: var(--gray-light);
    font-size: 0.95rem;
    line-height: 1.9;
    margin: 0;
    font-style: italic;
}

/* ===== Stats Grid ===== */
.rich-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.rich-stat-card {
    background: rgba(30,41,59,0.5);
    border: 1px solid rgba(99,102,241,0.1);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    text-align: center;
    transition: var(--transition);
}

.rich-stat-card:hover {
    transform: translateY(-3px);
    border-color: rgba(99,102,241,0.3);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.rich-stat-value {
    font-size: 2.4rem;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    line-height: 1.1;
}

.rich-stat-label {
    color: var(--gray-light);
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 8px;
}

.rich-stat-source {
    color: var(--gray);
    font-size: 0.75rem;
    opacity: 0.7;
}

/* ===== Lessons / Accordion ===== */
.rich-lesson {
    background: rgba(30,41,59,0.3);
    border: 1px solid rgba(99,102,241,0.08);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.rich-lesson:hover {
    border-color: rgba(99,102,241,0.2);
}

.rich-lesson.open {
    border-color: rgba(99,102,241,0.3);
    box-shadow: 0 4px 20px rgba(99,102,241,0.1);
}

.rich-lesson-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 22px;
    cursor: pointer;
    transition: background 0.3s ease;
    user-select: none;
}

.rich-lesson-header:hover {
    background: rgba(99,102,241,0.05);
}

.rich-lesson-num {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 800;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.rich-lesson-title {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-weight: 700;
    font-size: 1rem;
}

.rich-lesson-title i {
    color: var(--primary-light);
    font-size: 0.9rem;
}

.rich-lesson-arrow {
    color: var(--gray);
    font-size: 0.8rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.rich-lesson.open .rich-lesson-arrow {
    transform: rotate(180deg);
    color: var(--primary-light);
}

.rich-lesson-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, padding 0.3s ease;
    padding: 0 22px;
}

.rich-lesson.open .rich-lesson-body {
    max-height: 5000px;
    padding: 4px 22px 28px;
}

/* ===== Rich Content Blocks ===== */
.rich-paragraph {
    color: var(--gray-light);
    font-size: 0.95rem;
    line-height: 2;
    margin-bottom: 16px;
}

.rich-subheading {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 700;
    margin: 24px 0 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(99,102,241,0.1);
}

/* Keypoint */
.rich-keypoint {
    background: linear-gradient(135deg, rgba(245,158,11,0.06), rgba(245,158,11,0.02));
    border: 1px solid rgba(245,158,11,0.15);
    border-radius: var(--radius-md);
    padding: 20px;
    margin: 20px 0;
}

.rich-keypoint-title {
    color: var(--accent);
    font-weight: 700;
    font-size: 0.92rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.rich-keypoint-title i {
    font-size: 0.85rem;
}

.rich-keypoint p {
    color: var(--gray-light);
    font-size: 0.92rem;
    line-height: 1.9;
    margin: 0;
}

/* Roles Grid */
.rich-roles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
    margin: 16px 0;
}

.rich-role-card {
    background: rgba(30,41,59,0.5);
    border: 1px solid rgba(99,102,241,0.1);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: var(--transition);
}

.rich-role-card:hover {
    transform: translateY(-2px);
    border-color: rgba(99,102,241,0.25);
}

.rich-role-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.rich-role-card h5 {
    color: var(--white);
    font-size: 0.92rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.rich-role-card p {
    color: var(--gray);
    font-size: 0.85rem;
    line-height: 1.8;
    margin: 0;
}

/* Levels */
.rich-levels {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 16px 0;
}

.rich-level-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(30,41,59,0.4);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.rich-level-item:hover {
    background: rgba(30,41,59,0.6);
}

.rich-level-badge {
    padding: 4px 14px;
    border-radius: 50px;
    color: white;
    font-size: 0.78rem;
    font-weight: 700;
    white-space: nowrap;
    flex-shrink: 0;
}

.rich-level-info h5 {
    color: var(--white);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.rich-level-info p {
    color: var(--gray);
    font-size: 0.88rem;
    line-height: 1.7;
    margin: 0;
}

/* Metrics */
.rich-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 14px;
    margin: 16px 0;
}

.rich-metric-card {
    background: rgba(30,41,59,0.5);
    border: 1px solid rgba(99,102,241,0.1);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: var(--transition);
}

.rich-metric-card:hover {
    border-color: rgba(99,102,241,0.25);
}

.rich-metric-card h5 {
    color: var(--white);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.rich-metric-card p {
    color: var(--gray);
    font-size: 0.88rem;
    line-height: 1.7;
    margin-bottom: 10px;
}

.rich-formula {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: rgba(99,102,241,0.08);
    border-radius: var(--radius-sm);
    margin-top: 8px;
}

.rich-formula i {
    color: var(--primary-light);
    font-size: 0.8rem;
}

.rich-formula code {
    color: var(--primary-light);
    font-size: 0.82rem;
    font-family: 'Cairo', monospace;
    direction: rtl;
}

/* Example Box */
.rich-example-box {
    background: linear-gradient(135deg, rgba(16,185,129,0.06), rgba(6,182,212,0.04));
    border: 1px solid rgba(16,185,129,0.15);
    border-radius: var(--radius-md);
    padding: 24px;
    margin: 20px 0;
}

.rich-example-header {
    color: var(--success);
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.rich-example-header i {
    font-size: 0.9rem;
}

.rich-example-text {
    color: var(--gray-light);
    font-size: 0.92rem;
    line-height: 1.9;
}

/* Did You Know */
.rich-dyk-box {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 20px;
    background: rgba(245,158,11,0.06);
    border: 1px solid rgba(245,158,11,0.12);
    border-radius: var(--radius-md);
    margin: 20px 0;
}

.rich-dyk-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
}

.rich-dyk-text {
    color: var(--gray-light);
    font-size: 0.9rem;
    line-height: 1.8;
}

.rich-dyk-text strong {
    color: var(--accent);
}

/* ===== Tips Grid ===== */
.rich-tips-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.rich-tips-do, .rich-tips-dont {
    padding: 24px;
    border-radius: var(--radius-md);
}

.rich-tips-do {
    background: rgba(16,185,129,0.06);
    border: 1px solid rgba(16,185,129,0.15);
}

.rich-tips-dont {
    background: rgba(239,68,68,0.06);
    border: 1px solid rgba(239,68,68,0.15);
}

.rich-tips-do h4 {
    color: var(--success);
    font-size: 1rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.rich-tips-dont h4 {
    color: var(--danger);
    font-size: 1rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.rich-tips-do ul, .rich-tips-dont ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.rich-tips-do li, .rich-tips-dont li {
    padding: 8px 0;
    color: var(--gray-light);
    font-size: 0.9rem;
    line-height: 1.7;
    padding-right: 20px;
    position: relative;
}

.rich-tips-do li::before {
    content: '✓';
    position: absolute;
    right: 0;
    color: var(--success);
    font-weight: 700;
}

.rich-tips-dont li::before {
    content: '✗';
    position: absolute;
    right: 0;
    color: var(--danger);
    font-weight: 700;
}

/* ===== Reflection Questions ===== */
.rich-reflection-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.rich-reflection-item {
    background: rgba(30,41,59,0.4);
    border: 1px solid rgba(99,102,241,0.08);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.rich-reflection-item:hover {
    border-color: rgba(99,102,241,0.2);
}

.rich-reflection-item.open {
    border-color: rgba(99,102,241,0.3);
}

.rich-reflection-q {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    cursor: pointer;
    color: var(--gray-light);
    font-size: 0.93rem;
    line-height: 1.7;
    transition: background 0.3s ease;
}

.rich-reflection-q:hover {
    background: rgba(99,102,241,0.05);
}

.rich-reflection-num {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(99,102,241,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-light);
    font-weight: 700;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.rich-reflection-q i {
    color: var(--gray);
    font-size: 0.75rem;
    margin-right: auto;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.rich-reflection-item.open .rich-reflection-q i {
    transform: rotate(180deg);
    color: var(--primary-light);
}

.rich-reflection-hint {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 20px;
    color: var(--gray);
    font-size: 0.88rem;
    line-height: 1.8;
    background: rgba(99,102,241,0.03);
}

.rich-reflection-item.open .rich-reflection-hint {
    max-height: 200px;
    padding: 14px 20px;
}

.rich-reflection-hint i {
    color: var(--accent);
    margin-left: 6px;
}

/* ===== Table Wrapper (scroll on mobile) ===== */
.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ===== Additional content blocks: checklist, quote ===== */
.rich-checklist {
    list-style: none;
    padding: 0;
    margin: 16px 0;
}

.rich-checklist li {
    padding: 10px 0;
    color: var(--gray-light);
    font-size: 0.92rem;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.rich-checklist li i {
    color: var(--success);
    margin-top: 4px;
    flex-shrink: 0;
}

.rich-quote {
    padding: 24px;
    background: rgba(99,102,241,0.05);
    border-right: 4px solid var(--primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: 20px 0;
    font-style: italic;
    color: var(--gray-light);
    font-size: 0.95rem;
    line-height: 1.9;
}

.rich-quote cite {
    display: block;
    margin-top: 10px;
    color: var(--gray);
    font-size: 0.82rem;
    font-style: normal;
}

/* ===== Process Flow (visual) ===== */
.rich-process-flow {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin: 20px 0;
}

.rich-process-step {
    background: rgba(30,41,59,0.5);
    border: 1px solid rgba(99,102,241,0.1);
    border-radius: var(--radius-md);
    padding: 20px 16px;
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.rich-process-step:hover {
    transform: translateY(-2px);
    border-color: rgba(99,102,241,0.25);
}

.rich-process-step .step-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.rich-process-step h5 {
    color: var(--white);
    font-size: 0.88rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.rich-process-step p {
    color: var(--gray);
    font-size: 0.8rem;
    line-height: 1.6;
    margin: 0;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .rich-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .rich-tips-grid {
        grid-template-columns: 1fr;
    }
    
    .rich-roles-grid {
        grid-template-columns: 1fr;
    }
    
    .rich-metrics {
        grid-template-columns: 1fr;
    }
    
    .rich-stat-value {
        font-size: 1.8rem;
    }
    
    .rich-lesson-header {
        padding: 14px 16px;
    }
    
    .rich-lesson-body {
        padding: 0 16px;
    }
    
    .rich-lesson.open .rich-lesson-body {
        padding: 4px 16px 24px;
    }

    .rich-process-flow {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .rich-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .rich-process-flow {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Light Theme — Rich Content
   ======================================== */
body.light-theme .rich-intro-text {
    color: #334155;
}

body.light-theme .rich-highlight-box {
    background: linear-gradient(135deg, rgba(99,102,241,0.06) 0%, rgba(6,182,212,0.04) 100%);
    border-color: rgba(99, 102, 241, 0.15);
    color: #1e293b;
}

body.light-theme .rich-stat-card {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(99, 102, 241, 0.1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

body.light-theme .rich-stat-value {
    color: #6366f1;
}

body.light-theme .rich-stat-label {
    color: #334155;
}

body.light-theme .rich-stat-source {
    color: #94a3b8;
}

body.light-theme .rich-lesson {
    background: rgba(255, 255, 255, 0.85);
    border-color: rgba(99, 102, 241, 0.1);
}

body.light-theme .rich-lesson-header {
    color: #0f172a;
}

body.light-theme .rich-lesson-header:hover {
    background: rgba(99, 102, 241, 0.04);
}

body.light-theme .rich-lesson-num {
    background: rgba(99, 102, 241, 0.08);
    color: #6366f1;
}

body.light-theme .rich-lesson-body {
    color: #334155;
    border-top-color: rgba(99, 102, 241, 0.08);
}

body.light-theme .rich-paragraph {
    color: #475569;
}

body.light-theme .rich-subheading {
    color: #0f172a;
}

body.light-theme .rich-keypoint {
    background: rgba(99, 102, 241, 0.04);
    border-color: rgba(99, 102, 241, 0.12);
}

body.light-theme .rich-keypoint-title {
    color: #4f46e5;
}

body.light-theme .rich-role-card,
body.light-theme .rich-metric-card {
    background: rgba(241, 245, 249, 0.8);
    border-color: rgba(99, 102, 241, 0.08);
}

body.light-theme .rich-role-card h5,
body.light-theme .rich-metric-card h5 {
    color: #0f172a;
}

body.light-theme .rich-role-card p,
body.light-theme .rich-metric-card p {
    color: #475569;
}

body.light-theme .rich-level-item {
    background: rgba(255, 255, 255, 0.85);
    border-color: rgba(99, 102, 241, 0.08);
}

body.light-theme .rich-level-info h5 {
    color: #0f172a;
}

body.light-theme .rich-level-info p {
    color: #475569;
}

body.light-theme .rich-example-box {
    background: rgba(16, 185, 129, 0.04);
    border-color: rgba(16, 185, 129, 0.15);
}

body.light-theme .rich-didyouknow {
    background: rgba(245, 158, 11, 0.04);
    border-color: rgba(245, 158, 11, 0.15);
    color: #92400e;
}

body.light-theme .rich-formula code {
    background: rgba(99, 102, 241, 0.06);
    color: #4f46e5;
}

body.light-theme .rich-tips-grid .tip-do,
body.light-theme .rich-tips-grid .tip-dont {
    background: rgba(255, 255, 255, 0.85);
    border-color: rgba(99, 102, 241, 0.08);
}

body.light-theme .rich-reflection-card {
    background: rgba(255, 255, 255, 0.85);
    border-color: rgba(99, 102, 241, 0.08);
}

body.light-theme .rich-reflection-card h5 {
    color: #0f172a;
}

body.light-theme .rich-process-step {
    background: rgba(255, 255, 255, 0.85);
    border-color: rgba(99, 102, 241, 0.08);
}

body.light-theme .rich-comparison-table th {
    background: rgba(99, 102, 241, 0.06);
    color: #0f172a;
}

body.light-theme .rich-comparison-table td {
    border-color: rgba(99, 102, 241, 0.06);
    color: #334155;
}