/* Toolliyo Academy — tutorials hub & course pages */
.academy-hero {
    background: var(--gradient-hero);
    padding: 110px 0 70px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.academy-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?w=1600&h=600&fit=crop&q=60") center/cover;
    opacity: 0.12;
    pointer-events: none;
}

.academy-hero .container {
    position: relative;
    z-index: 1;
}

.topic-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.topic-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.5);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

.topic-card-cover {
    height: 160px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.topic-card-cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(15, 23, 42, 0.95) 100%);
}

.topic-card-body {
    padding: 1.25rem 1.5rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-hero {
    padding: 120px 0 60px;
    background: var(--gradient-hero);
    border-bottom: 1px solid var(--border-color);
}

.course-hero-img {
    border-radius: var(--radius-xl, 24px);
    box-shadow: var(--shadow-lg, 0 8px 40px rgba(0, 0, 0, 0.5));
    max-height: 320px;
    object-fit: cover;
    width: 100%;
}

.syllabus-section {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1rem;
}

.syllabus-lesson {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.syllabus-lesson:hover {
    background: rgba(99, 102, 241, 0.12);
    color: var(--text-primary);
}

.lesson-toc {
    position: sticky;
    top: 90px;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
    padding: 1rem 0;
}

.lesson-toc a {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.35rem 0;
    border-left: 2px solid transparent;
    padding-left: 0.75rem;
    line-height: 1.35;
}

.lesson-toc a.level-3 {
    padding-left: 1.25rem;
    font-size: 0.78rem;
}

.lesson-toc a:hover,
.lesson-toc a.active {
    color: var(--link-color);
    border-left-color: var(--primary, #6366f1);
}

.lesson-share .btn {
    font-size: 0.8rem;
}

.lesson-progress {
    height: 4px;
    background: var(--bg-glass);
    border-radius: 4px;
    overflow: hidden;
}

.lesson-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #6366f1, #06b6d4);
    transition: width 0.3s ease;
}

.syllabus-lesson .lesson-num {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: rgba(99, 102, 241, 0.2);
    color: #818cf8;
    font-size: 0.75rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.academy-pill {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Advanced lesson track (seeded via tutorialAdvancedContent) */
.toolliyo-lesson-advanced .badge.bg-danger {
    font-size: 0.7rem;
    letter-spacing: 0.5px;
}

.toolliyo-lesson-advanced h2 {
    border-left: 3px solid #ef4444;
    padding-left: 0.75rem;
    margin-top: 2rem;
}

.toolliyo-lesson-advanced pre {
    border: 1px solid rgba(99, 102, 241, 0.35);
}