.learn-hero {
    padding: calc(72px + var(--space-16)) 0 var(--space-12);
    text-align: center;
    background: linear-gradient(180deg, rgba(var(--color-accent-rgb), 0.05) 0%, transparent 100%);
}

.learn-hero h1 {
    font-size: var(--text-6xl);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-4);
}

.learn-hero p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto var(--space-8);
}

.learn-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-10);
    margin-top: var(--space-8);
    flex-wrap: wrap;
}

.learn-stat {
    text-align: center;
}

.learn-stat .stat-number {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.learn-stat .stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: var(--space-1);
}

/* Continue Section */
.continue-section {
    padding: 0 0 var(--space-8);
}

.continue-card {
    display: flex;
    align-items: center;
    gap: var(--space-5);
    padding: var(--space-6);
    background: linear-gradient(135deg, rgba(var(--color-accent-rgb), 0.08), rgba(var(--color-secondary-accent-rgb), 0.05));
    border: 1px solid rgba(var(--color-accent-rgb), 0.3);
    border-radius: var(--radius-xl);
    box-shadow: 0 0 40px rgba(var(--color-accent-rgb), 0.1);
    flex-wrap: wrap;
}

.continue-icon {
    font-size: var(--text-3xl);
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-surface);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.continue-info {
    flex: 1;
    min-width: 200px;
}

.continue-info h3 {
    margin: 0 0 var(--space-1);
    font-size: var(--text-lg);
}

.continue-info p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

/* Tracks Section */
.tracks-section {
    padding: var(--space-8) 0 var(--space-16);
}

.tracks-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.track-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.track-card:hover {
    border-color: rgba(var(--color-accent-rgb), 0.2);
}

.track-card.expanded {
    box-shadow: var(--shadow-lg), 0 0 40px rgba(var(--color-accent-rgb), 0.05);
}

.track-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-5);
    padding: var(--space-6);
    align-items: start;
}

.track-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-3xl);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.track-icon-beginner { background: linear-gradient(135deg, rgba(0, 255, 136, 0.15), rgba(0, 255, 136, 0.05)); }
.track-icon-intermediate { background: linear-gradient(135deg, rgba(255, 170, 0, 0.15), rgba(255, 170, 0, 0.05)); }
.track-icon-advanced { background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(124, 58, 237, 0.05)); }

.track-info {
    min-width: 0;
}

.track-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin: var(--space-2) 0 var(--space-2);
}

.track-description {
    color: var(--text-secondary);
    margin: 0 0 var(--space-3);
    line-height: var(--leading-relaxed);
}

.track-meta {
    display: flex;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

/* Progress Circle */
.progress-circle {
    position: relative;
    width: 72px;
    height: 72px;
    flex-shrink: 0;
}

.progress-circle svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.progress-circle .progress-bg {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 3;
}

.progress-circle .progress-bar {
    fill: none;
    stroke: var(--color-accent);
    stroke-width: 3;
    stroke-linecap: round;
    transition: stroke-dasharray var(--transition-normal);
}

.progress-circle .progress-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-accent);
    font-family: var(--font-mono);
}

/* Track Toggle */
.track-toggle {
    width: 100%;
    padding: var(--space-4) var(--space-6);
    background-color: var(--bg-body);
    border: none;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    transition: all var(--transition-fast);
}

.track-toggle:hover {
    background-color: var(--bg-surface-hover);
    color: var(--color-accent);
}

.toggle-icon {
    transition: transform var(--transition-normal);
}

.track-card.expanded .toggle-icon {
    transform: rotate(180deg);
}

/* Track Content */
.track-content {
    padding: var(--space-6);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-body);
    animation: trackSlideDown 0.3s ease-out;
}

@keyframes trackSlideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.track-progress-bar {
    margin-bottom: var(--space-6);
}

.progress-bar-large {
    height: 8px;
    background-color: var(--border-color);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-2);
}

.progress-bar-large .progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-secondary-accent) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

.progress-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

/* Lesson List */
.lesson-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    counter-reset: lesson;
}

.lesson-item {
    display: grid;
    grid-template-columns: auto auto 1fr auto auto;
    gap: var(--space-4);
    padding: var(--space-4);
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    align-items: center;
    transition: all var(--transition-fast);
    counter-increment: lesson;
}

.lesson-item:hover {
    border-color: rgba(var(--color-accent-rgb), 0.3);
    box-shadow: 0 2px 8px rgba(var(--color-accent-rgb), 0.08);
}

.lesson-item.highlighted {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, rgba(var(--color-accent-rgb), 0.05), transparent);
    box-shadow: 0 0 20px rgba(var(--color-accent-rgb), 0.15);
}

.lesson-item.highlighted::before {
    content: "Continue here";
    grid-column: 1 / -1;
    font-size: var(--text-xs);
    color: var(--color-accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding-bottom: var(--space-2);
    border-bottom: 1px dashed rgba(var(--color-accent-rgb), 0.3);
    margin-bottom: var(--space-2);
    font-family: var(--font-mono);
}

.lesson-item.highlighted {
    grid-template-columns: auto auto 1fr auto auto;
    grid-template-rows: auto auto;
}

.lesson-item.completed {
    opacity: 0.7;
}

.lesson-number {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-body);
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.lesson-item.completed .lesson-number {
    background-color: var(--color-success);
    color: white;
}

.lesson-type-icon {
    font-size: var(--text-lg);
    width: 32px;
    text-align: center;
}

.lesson-info {
    min-width: 0;
}

.lesson-title {
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-1);
    font-size: var(--text-base);
}

.lesson-time {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

.lesson-link {
    color: var(--color-accent);
    font-weight: 500;
    font-size: var(--text-sm);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    transition: gap var(--transition-fast);
}

.lesson-link:hover {
    gap: var(--space-2);
}

/* Checkbox */
.lesson-checkbox {
    width: 24px;
    height: 24px;
    cursor: pointer;
    accent-color: var(--color-accent);
    flex-shrink: 0;
}

/* CTA */
.learn-cta {
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, rgba(var(--color-accent-rgb), 0.03), rgba(var(--color-secondary-accent-rgb), 0.03));
    border-top: 1px solid var(--border-color);
}

.cta-card {
    text-align: center;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-12);
    box-shadow: var(--shadow-lg);
}

.cta-card h2 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-3);
}

.cta-card p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 768px) {
    .learn-hero h1 {
        font-size: var(--text-4xl);
    }
    .learn-stats {
        gap: var(--space-6);
    }
    .track-header {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .track-icon {
        margin: 0 auto;
    }
    .progress-circle {
        margin: 0 auto;
    }
    .lesson-item {
        grid-template-columns: auto 1fr auto;
        grid-template-areas: 
            "icon title check"
            "time time link";
    }
    .lesson-number { grid-area: icon; }
    .lesson-type-icon { display: none; }
    .lesson-info { grid-area: title; }
    .lesson-time { grid-area: time; }
    .lesson-link { grid-area: link; }
    .lesson-checkbox { grid-area: check; }
    .continue-card {
        flex-direction: column;
        text-align: center;
    }
    .cta-card {
        padding: var(--space-8);
    }
}