.course-hero {
    min-height: 40vh;
    background: linear-gradient(rgba(15, 23, 42, 0.82), rgba(15, 23, 42, 0.82)), url('/import/divyaability-foundation-city-skyline-banner-1376x271.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    color: white;
    text-align: center;
}

.course-card {
    position: relative;
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    height: 100%;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--neutral-200);
    transition: var(--transition-base);
}

.course-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.course-img-box {
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 20px;
    height: 180px;
    background: var(--neutral-50);
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-img-box img {
    max-height: 80%;
}

.course-meta {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
    display: block;
}

.under-dev-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: clamp(1.25rem, 4vw, 3rem);
    border: 1px solid var(--neutral-200);
    box-shadow: var(--shadow-md);
}

.course-toolbar {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.75rem;
}

.course-filter-row {
    display: flex;
    gap: 0.75rem;
    overflow-x: auto;
    padding-bottom: 0.25rem;
}

.course-filter {
    border: 1px solid var(--neutral-200);
    background: var(--neutral-50);
    color: var(--neutral-700);
    border-radius: var(--radius);
    padding: 0.65rem 1rem;
    font-weight: 700;
    white-space: nowrap;
}

.course-filter.active,
.course-filter:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.bookmark-btn {
    position: absolute;
    right: 1rem;
    top: 1rem;
    z-index: 2;
    width: 44px;
    height: 44px;
    border: 0;
    border-radius: var(--radius);
    background: var(--white);
    color: var(--primary);
    box-shadow: var(--shadow);
}

.bookmark-btn.active,
.bookmark-btn:hover {
    background: var(--accent);
    color: var(--primary);
}

.course-progress-ui .progress {
    height: 8px;
    border-radius: 999px;
    background: var(--neutral-100);
}

@media (max-width: 575px) {
    .course-toolbar {
        grid-template-columns: 1fr;
    }
}

/* Skeleton Loading Animation */
.skeleton-box {
    background: #e2e8f0;
    background: linear-gradient(110deg, #ececec 8%, #f5f5f5 18%, #ececec 33%);
    border-radius: 8px;
    background-size: 200% 100%;
    animation: 1.5s shine linear infinite;
}

@keyframes shine {
    to { background-position-x: -200%; }
}

.skeleton-item .card {
    border: none;
    opacity: 0.7;
}

.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

.shadow-2xl { box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25) !important; }
.shadow-premium { box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.1) !important; }
.rounded-5 { border-radius: 2rem !important; }
.py-6 { padding-top: 5rem !important; padding-bottom: 5rem !important; }
.z-index-1 { z-index: 1; }
.fs-4 { font-size: 1.25rem !important; }
.lh-base { line-height: 1.5 !important; }