/* --- 1. Gallery --- */
.gallery-container { padding: 60px 20px; max-width: 1300px; margin: 0 auto; }
.gallery-header { margin-bottom: 50px; border-right: 5px solid var(--primary-red); padding-right: 20px; }
.sub-title { color: var(--primary-red); font-weight: 700; font-size: 1.1rem; display: block; margin-bottom: 5px; }
.header-flex { display: flex; flex-direction: column; gap: 30px; margin-top: 20px; }
@media (min-width: 768px) { .header-flex { flex-direction: row; justify-content: space-between; align-items: flex-end; } }

.filter-nav { display: flex; flex-wrap: wrap; gap: 12px; }
.filter-btn { background-color: #1a1a1a; border: 1px solid #333; color: #fff; padding: 10px 24px; cursor: pointer; font-weight: 700; border-radius: 8px; transition: var(--transition); }
.filter-btn:hover { border-color: var(--primary-sky); transform: translateY(-2px); }
.filter-btn.active { background-color: var(--primary-red); border-color: var(--primary-red); box-shadow: 0 5px 15px rgba(255, 0, 0, 0.3); }

.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 25px; }
.image-wrapper { position: relative; overflow: hidden; border-radius: 15px; aspect-ratio: 4 / 3; background: #111; }
.image-wrapper img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(255, 0, 0, 0.8), transparent); display: flex; align-items: flex-end; padding: 25px; opacity: 0; transition: var(--transition); transform: translateY(20px); }
.gallery-item:hover img { transform: scale(1.1); }
.gallery-item:hover .overlay { opacity: 1; transform: translateY(0); }

/* --- 2. Classes --- */
.classes-section { max-width: 1200px; margin: 40px auto; padding: 0 20px; }
.section-header { text-align: center; margin-bottom: 40px; }
.classes-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }

.class-card-wrap { position: relative; overflow: hidden; border-radius: 4px; cursor: pointer; }
.card-image { position: relative; width: 100%; aspect-ratio: 16 / 10; }
.card-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.class-card-wrap:hover .card-image img { transform: scale(1.1); }

.card-overlay {
    position: absolute; bottom: 0; left: 0; right: 0; height: 100%;
    background: linear-gradient(transparent 40%, rgba(0, 0, 0, 0.4)); display: flex; align-items: flex-end; padding: 20px;
}
.card-content { color: #fff; transform: translateY(10px); transition: var(--transition); }
.class-card-wrap:hover .card-content { transform: translateY(0); }

.class-name-lg { font-size: 1.5rem; font-weight: 700; margin-bottom: 5px; }
.instructor-name { font-size: 0.9rem; color: #FF6B35; display: flex; align-items: center; gap: 8px; }

.pagination { display: flex; justify-content: center; gap: 10px; margin-top: 40px; }
.dot { width: 30px; height: 8px; background-color: #e0e0e0; border-radius: 4px; }
.dot.active { background-color: #FF6B35; width: 45px; }