/* =============================================
   TRADERZ HUB - LESSON PAGE STYLES (REDESIGNED)
   Clean, modern lesson layout without overlaps
   ============================================= */

/* Variables */
:root {
    --lesson-bg: #050505;
    --lesson-card: #0a0a0a;
    --lesson-card-hover: #111111;
    --lesson-border: rgba(255, 255, 255, 0.06);
    --lesson-border-hover: rgba(255, 255, 255, 0.12);
    --lesson-text: #f5f5f5;
    --lesson-muted: #8b949e;
    --lesson-accent: #d4af37;
    --lesson-forex: #3b82f6;
    --lesson-crypto: #f59e0b;
    --lesson-stocks: #8b5cf6;
    --lesson-success: #22c55e;
    --lesson-danger: #ef4444;
}

/* ===== Main Layout ===== */
.lesson-page {
    min-height: 100vh;
    background: var(--lesson-bg);
}

.lesson-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 1.5rem;
    align-items: start;
}

/* ===== Sidebar ===== */
.lesson-sidebar {
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    background: var(--lesson-card);
    border: 1px solid var(--lesson-border);
    border-radius: 16px;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.lesson-sidebar::-webkit-scrollbar {
    width: 6px;
}

.lesson-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.lesson-sidebar::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
}

.sidebar-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--lesson-border);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--lesson-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--lesson-text);
}

/* Progress Section */
.course-progress {
    padding: 1.25rem;
    border-bottom: 1px solid var(--lesson-border);
    background: rgba(255,255,255,0.01);
}

.progress-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    margin-bottom: 0.75rem;
}

.progress-label span:first-child {
    color: var(--lesson-muted);
}

.progress-label span:last-child {
    color: var(--lesson-accent);
    font-weight: 600;
}

.progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--lesson-accent), #f5d67a);
    border-radius: 2px;
    transition: width 0.5s ease;
}

/* Module Navigation */
.module-nav {
    padding: 0.5rem 0;
}

.module-group {
    border-bottom: 1px solid var(--lesson-border);
}

.module-group:last-child {
    border-bottom: none;
}

.module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    cursor: pointer;
    transition: background 0.2s;
}

.module-header:hover {
    background: rgba(255, 255, 255, 0.02);
}

.module-title {
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--lesson-text);
}

.module-chevron {
    color: var(--lesson-muted);
    transition: transform 0.2s;
}

.module-group.active .module-chevron {
    transform: rotate(180deg);
}

/* Lesson List */
.lesson-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.lesson-list.expanded {
    max-height: 1000px;
}

.lesson-link {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.625rem 1.25rem 0.625rem 1.5rem;
    text-decoration: none;
    transition: all 0.2s;
    border-left: 2px solid transparent;
}

.lesson-link:hover {
    background: rgba(255, 255, 255, 0.02);
}

.lesson-link.active {
    background: rgba(212, 175, 55, 0.08);
    border-left-color: var(--lesson-accent);
}

.lesson-status {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lesson-link .lesson-title {
    flex: 1;
    font-size: 0.8125rem;
    color: var(--lesson-muted);
    transition: color 0.2s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.lesson-link:hover .lesson-title,
.lesson-link.active .lesson-title {
    color: var(--lesson-text);
}

.lesson-link.completed .lesson-title {
    color: var(--lesson-success);
}

.lesson-duration {
    font-size: 0.6875rem;
    color: rgba(255, 255, 255, 0.25);
    flex-shrink: 0;
}

/* ===== Mobile Toggle ===== */
.sidebar-toggle {
    display: none;
    position: fixed;
    bottom: 1.5rem;
    left: 1.5rem;
    z-index: 50;
    background: var(--lesson-card);
    border: 1px solid var(--lesson-border);
    border-radius: 12px;
    padding: 0.875rem;
    color: var(--lesson-text);
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.sidebar-toggle:hover {
    background: var(--lesson-card-hover);
    border-color: var(--lesson-border-hover);
}

/* ===== Main Content ===== */
.lesson-main {
    min-width: 0;
}

.lesson-content-card {
    background: var(--lesson-card);
    border: 1px solid var(--lesson-border);
    border-radius: 16px;
    overflow: hidden;
}

/* Lesson Header */
.lesson-header {
    padding: 2rem;
    border-bottom: 1px solid var(--lesson-border);
}

.lesson-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.course-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.course-badge.forex {
    background: rgba(59, 130, 246, 0.12);
    color: var(--lesson-forex);
}

.course-badge.crypto {
    background: rgba(245, 158, 11, 0.12);
    color: var(--lesson-crypto);
}

.course-badge.stocks {
    background: rgba(139, 92, 246, 0.12);
    color: var(--lesson-stocks);
}

.lesson-meta .lesson-duration {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--lesson-muted);
    font-size: 0.8125rem;
}

.lesson-header .lesson-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--lesson-text);
    line-height: 1.3;
    margin: 0;
}

/* Lesson Content */
.lesson-content {
    padding: 2rem;
    font-size: 1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

.lesson-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--lesson-text);
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--lesson-border);
}

.lesson-content h2:first-child {
    margin-top: 0;
}

.lesson-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--lesson-text);
    margin: 1.75rem 0 0.75rem;
}

.lesson-content h4 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--lesson-text);
    margin: 1.5rem 0 0.5rem;
}

.lesson-content p {
    margin-bottom: 1.125rem;
}

.lesson-content strong {
    color: var(--lesson-text);
    font-weight: 600;
}

.lesson-content ul, .lesson-content ol {
    margin: 1rem 0 1.25rem 1.25rem;
}

.lesson-content li {
    margin-bottom: 0.5rem;
}

/* Info/Example/Warning Boxes */
.lesson-content .info-box,
.lesson-content .example-box,
.lesson-content .warning-box,
.lesson-content .concept-box,
.lesson-content .recommendation-box {
    padding: 1.25rem;
    border-radius: 10px;
    margin: 1.25rem 0;
}

.lesson-content .info-box {
    background: rgba(59, 130, 246, 0.08);
    border-left: 3px solid var(--lesson-forex);
}

.lesson-content .example-box {
    background: rgba(139, 92, 246, 0.08);
    border-left: 3px solid var(--lesson-stocks);
}

.lesson-content .warning-box {
    background: rgba(239, 68, 68, 0.08);
    border-left: 3px solid var(--lesson-danger);
}

.lesson-content .concept-box {
    background: rgba(212, 175, 55, 0.08);
    border-left: 3px solid var(--lesson-accent);
}

.lesson-content .recommendation-box {
    background: rgba(34, 197, 94, 0.08);
    border-left: 3px solid var(--lesson-success);
}

.lesson-content .info-box h4,
.lesson-content .example-box h4,
.lesson-content .warning-box h4,
.lesson-content .concept-box h4,
.lesson-content .recommendation-box h4 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

/* Styled Lists */
.lesson-content .styled-list {
    list-style: none;
    margin-left: 0;
    padding-left: 0;
}

.lesson-content .styled-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.625rem;
}

.lesson-content .styled-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--lesson-accent);
    font-weight: bold;
}

/* Takeaways */
.lesson-content .takeaways {
    background: rgba(34, 197, 94, 0.06);
    border: 1px solid rgba(34, 197, 94, 0.15);
    border-radius: 10px;
    padding: 1.25rem;
    margin: 1.5rem 0;
    list-style: none;
}

.lesson-content .takeaways li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.625rem;
}

.lesson-content .takeaways li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--lesson-success);
    font-weight: bold;
}

/* Grids */
.lesson-content .grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 1.25rem 0;
}

.lesson-content .benefit-card,
.lesson-content .feature-card,
.lesson-content .method-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--lesson-border);
    border-radius: 10px;
    padding: 1rem;
}

.lesson-content .benefit-card h4,
.lesson-content .feature-card h4,
.lesson-content .method-card h4 {
    margin-top: 0;
    margin-bottom: 0.375rem;
    font-size: 0.9375rem;
}

/* Currency/Data Tables */
.lesson-content .currency-table,
.lesson-content .comparison-table {
    margin: 1.25rem 0;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--lesson-border);
}

.lesson-content .currency-row,
.lesson-content .comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--lesson-border);
}

.lesson-content .currency-row.header,
.lesson-content .comparison-row.header {
    background: rgba(255, 255, 255, 0.03);
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--lesson-muted);
}

.lesson-content .currency-row:last-child,
.lesson-content .comparison-row:last-child {
    border-bottom: none;
}

/* Session Timeline */
.lesson-content .session-timeline {
    display: grid;
    gap: 0.75rem;
    margin: 1.25rem 0;
}

.lesson-content .session {
    padding: 1rem;
    border-radius: 10px;
    border-left: 3px solid;
}

.lesson-content .session.sydney { border-color: #22d3ee; background: rgba(34, 211, 238, 0.08); }
.lesson-content .session.tokyo { border-color: #f472b6; background: rgba(244, 114, 182, 0.08); }
.lesson-content .session.london { border-color: #60a5fa; background: rgba(96, 165, 250, 0.08); }
.lesson-content .session.newyork { border-color: #a78bfa; background: rgba(167, 139, 250, 0.08); }

.lesson-content .session h4 {
    margin-top: 0;
    margin-bottom: 0.25rem;
}

/* Lot Cards */
.lesson-content .lot-comparison {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin: 1.25rem 0;
}

.lesson-content .lot-card {
    text-align: center;
    padding: 1.25rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--lesson-border);
}

.lesson-content .lot-card h4 {
    margin-top: 0;
}

.lesson-content .lot-size {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--lesson-accent);
    margin: 0.375rem 0;
}

.lesson-content .pip-value {
    font-size: 0.8125rem;
    color: var(--lesson-success);
    margin-top: 0.375rem;
}

/* Formula Box */
.lesson-content .formula-box {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.08), rgba(212, 175, 55, 0.04));
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 10px;
    padding: 1.25rem;
    text-align: center;
    margin: 1.25rem 0;
}

.lesson-content .formula-box h4 {
    margin: 0;
    font-family: 'Fira Code', monospace;
    color: var(--lesson-accent);
}

/* Pattern Cards */
.lesson-content .pattern-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin: 1.25rem 0;
}

.lesson-content .pattern-card {
    padding: 1rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--lesson-border);
}

.lesson-content .pattern-card.bullish {
    border-color: rgba(34, 197, 94, 0.25);
}

.lesson-content .pattern-card.bearish {
    border-color: rgba(239, 68, 68, 0.25);
}

.lesson-content .pattern-card h5 {
    margin: 0 0 0.375rem;
    color: var(--lesson-text);
}

/* Trend Cards */
.lesson-content .trend-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin: 1.25rem 0;
}

.lesson-content .trend-card {
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
}

.lesson-content .trend-card.uptrend {
    background: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.lesson-content .trend-card.downtrend {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.lesson-content .trend-card.sideways {
    background: rgba(156, 163, 175, 0.08);
    border: 1px solid rgba(156, 163, 175, 0.2);
}

/* Emotion Cards */
.lesson-content .emotion-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 1.25rem 0;
}

.lesson-content .emotion-card {
    padding: 1.25rem;
    border-radius: 10px;
}

.lesson-content .emotion-card.fear {
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.lesson-content .emotion-card.greed {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* Quote Box */
.lesson-content .quote-box {
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--lesson-accent);
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 10px 10px 0;
}

.lesson-content .quote-box p {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--lesson-text);
    margin-bottom: 0.5rem;
}

.lesson-content .quote-box cite {
    color: var(--lesson-muted);
    font-size: 0.8125rem;
}

/* Checklist */
.lesson-content .checklist {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
    padding: 1.25rem;
    margin: 1.25rem 0;
}

.lesson-content .checklist-item {
    padding: 0.375rem 0;
    color: var(--lesson-text);
    font-size: 0.9375rem;
}

/* ===== Quiz Section ===== */
.lesson-quiz {
    padding: 2rem;
    border-top: 1px solid var(--lesson-border);
    background: rgba(255,255,255,0.01);
}

.quiz-header {
    margin-bottom: 1.5rem;
}

.quiz-header h2 {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--lesson-text);
    margin-bottom: 0.375rem;
}

.quiz-header p {
    color: var(--lesson-muted);
    font-size: 0.875rem;
}

.quiz-question {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--lesson-border);
    border-radius: 10px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.quiz-question h4 {
    color: var(--lesson-text);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--lesson-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
    color: var(--lesson-text);
    font-size: 0.875rem;
}

.quiz-option:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--lesson-border-hover);
}

.quiz-option:disabled {
    cursor: default;
}

.quiz-option.correct {
    background: rgba(34, 197, 94, 0.12);
    border-color: rgba(34, 197, 94, 0.4);
}

.quiz-option.incorrect {
    background: rgba(239, 68, 68, 0.12);
    border-color: rgba(239, 68, 68, 0.4);
}

.option-letter {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.75rem;
    flex-shrink: 0;
}

.quiz-explanation {
    display: flex;
    gap: 0.625rem;
    margin-top: 0.75rem;
    padding: 0.875rem;
    background: rgba(59, 130, 246, 0.08);
    border-radius: 8px;
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.8);
}

.quiz-explanation.hidden {
    display: none;
}

/* ===== Lesson Navigation ===== */
.lesson-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--lesson-border);
    background: rgba(255,255,255,0.01);
    gap: 1rem;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.875rem 1.25rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--lesson-border);
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.2s;
    max-width: 200px;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--lesson-border-hover);
}

.nav-btn.finish {
    background: rgba(255, 255, 255, 0.05);
}

.nav-text {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.nav-label {
    font-size: 0.6875rem;
    color: var(--lesson-muted);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.nav-title {
    font-size: 0.8125rem;
    color: var(--lesson-text);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.complete-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: #ffffff;
    border: none;
    border-radius: 10px;
    color: #0a0a0a;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

.complete-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(255, 255, 255, 0.12);
}

.complete-btn.completed {
    background: rgba(34, 197, 94, 0.15);
    color: var(--lesson-success);
    cursor: default;
}

.complete-btn.completed:hover {
    transform: none;
    box-shadow: none;
}

/* ===== Mobile Overlay ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 45;
    opacity: 0;
    transition: opacity 0.3s;
}

.sidebar-overlay.active {
    opacity: 1;
}

/* ===== LEGACY SUPPORT (for old .lesson-container class) ===== */
.lesson-container {
    min-height: 100vh;
    background: var(--lesson-bg);
}

/* ===== Responsive Styles ===== */
@media (max-width: 1024px) {
    .lesson-wrapper {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    
    .lesson-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 300px;
        max-height: 100vh;
        border-radius: 0;
        z-index: 50;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .lesson-sidebar.open {
        transform: translateX(0);
    }
    
    .sidebar-toggle {
        display: flex;
    }
    
    .sidebar-overlay {
        display: block;
    }
    
    /* Legacy support for old template */
    .lesson-container .lesson-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 300px;
        max-height: 100vh;
        border-radius: 0;
        z-index: 50;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .lesson-container .lesson-sidebar.open {
        transform: translateX(0);
    }
    
    .lesson-container .lesson-main {
        margin-left: 0;
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .lesson-header {
        padding: 1.5rem;
    }
    
    .lesson-header .lesson-title {
        font-size: 1.375rem;
    }
    
    .lesson-content {
        padding: 1.5rem;
        font-size: 0.9375rem;
    }
    
    .lesson-content h2 {
        font-size: 1.25rem;
    }
    
    .lesson-content h3 {
        font-size: 1.125rem;
    }
    
    .lesson-content .grid-2,
    .lesson-content .pattern-grid,
    .lesson-content .lot-comparison,
    .lesson-content .trend-cards,
    .lesson-content .emotion-cards {
        grid-template-columns: 1fr;
    }
    
    .lesson-navigation {
        flex-direction: column;
        padding: 1.25rem;
    }
    
    .nav-btn {
        width: 100%;
        max-width: none;
        justify-content: center;
    }
    
    .complete-btn {
        width: 100%;
        justify-content: center;
        order: -1;
    }
    
    .lesson-quiz {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .lesson-meta {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .lesson-content .currency-row,
    .lesson-content .comparison-row {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
    
    .sidebar-toggle {
        bottom: 1rem;
        left: 1rem;
    }
}