/* === KATALOG PAGE CSS === */
.page-hero {
    padding: 8rem 0 3rem;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
    color: var(--white);
}
.breadcrumb {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.85rem; color: rgba(255,255,255,0.5);
    margin-bottom: 1rem;
}
.breadcrumb a { color: rgba(255,255,255,0.6); text-decoration: none; }
.breadcrumb a:hover { color: var(--gold-light); }
.breadcrumb i { font-size: 0.7rem; }
.page-hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    margin-bottom: 0.75rem;
}
.page-hero p { color: rgba(255,255,255,0.7); font-size: 1.05rem; }

.catalog-section { padding: 3rem 0 5rem; }

/* Tab switcher */
.tab-switcher {
    display: flex; gap: 0.5rem;
    background: var(--gray-100);
    border-radius: 12px;
    padding: 0.4rem;
    width: fit-content;
    margin-bottom: 2.5rem;
    box-shadow: var(--shadow-sm);
}
.tab-btn {
    display: flex; align-items: center; gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    border-radius: 8px;
    font-size: 0.95rem; font-weight: 600;
    text-decoration: none;
    color: var(--gray-500);
    transition: all var(--transition);
}
.tab-btn.active, .tab-btn:hover {
    background: var(--white);
    color: var(--red-main);
    box-shadow: var(--shadow-sm);
}
.tab-btn.active { color: var(--red-main); }

/* Toolbar */
.catalog-toolbar {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 1rem;
    margin-bottom: 2rem;
}
.filter-chips { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.chip {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.45rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem; font-weight: 500;
    text-decoration: none;
    border: 1.5px solid var(--gray-200);
    background: var(--white);
    color: var(--gray-700);
    transition: all var(--transition);
}
.chip:hover, .chip.active {
    background: var(--red-main); color: var(--white); border-color: var(--red-main);
}
.search-box {
    display: flex; align-items: center;
    background: var(--white);
    border: 1.5px solid var(--gray-200);
    border-radius: 50px;
    padding: 0.5rem 1.25rem;
    gap: 0.6rem;
    min-width: 260px;
}
.search-box i { color: var(--gray-500); }
.search-box input {
    border: none; outline: none; background: none;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem; color: var(--dark);
    flex: 1; min-width: 0;
}
.no-results {
    text-align: center; padding: 4rem; color: var(--gray-500);
}
.no-results i { font-size: 2.5rem; margin-bottom: 1rem; display: block; color: var(--gray-200); }

/* PDF Grid */
.pdf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}
.pdf-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all var(--transition);
}
.pdf-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.pdf-cover {
    position: relative;
    height: 220px;
    background: linear-gradient(135deg, #fee, #f5e6e6);
    overflow: hidden;
}
.pdf-cover img { width: 100%; height: 100%; object-fit: cover; }
.pdf-cover-placeholder {
    height: 100%;
    display: flex; align-items: center; justify-content: center;
    font-size: 4rem; color: var(--red-main); opacity: 0.4;
}
.pdf-year-badge {
    position: absolute; top: 0.75rem; right: 0.75rem;
    background: var(--red-main); color: var(--white);
    font-size: 0.8rem; font-weight: 700;
    padding: 0.25rem 0.75rem; border-radius: 50px;
}
.pdf-info { padding: 1.25rem; }
.pdf-info h4 { font-size: 1.05rem; font-weight: 700; color: var(--dark); margin-bottom: 0.5rem; }
.pdf-info p { font-size: 0.85rem; color: var(--gray-500); margin-bottom: 0.75rem; line-height: 1.5; }
.pdf-size { font-size: 0.8rem; color: var(--gray-500); display: flex; align-items: center; gap: 0.35rem; margin-bottom: 1rem; }
.pdf-actions { display: flex; gap: 0.5rem; }
.pdf-view-btn, .pdf-dl-btn {
    flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
    padding: 0.6rem 0.5rem;
    border-radius: 8px;
    font-size: 0.85rem; font-weight: 600;
    text-decoration: none; transition: all var(--transition);
}
.pdf-view-btn { background: var(--red-main); color: var(--white); }
.pdf-view-btn:hover { background: var(--red-bright); transform: translateY(-1px); }
.pdf-dl-btn { background: var(--gray-100); color: var(--gray-700); border: 1px solid var(--gray-200); }
.pdf-dl-btn:hover { background: var(--dark); color: var(--white); }
.pdf-cta {
    background: var(--gray-100);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    margin-top: 1rem;
}
.pdf-cta h3 { font-size: 1.4rem; font-weight: 700; color: var(--dark); margin-bottom: 0.5rem; }
.pdf-cta p { color: var(--gray-500); max-width: 450px; margin: 0 auto; }

/* Single product */
.single-product-section { padding: 3rem 0 5rem; }
.back-link {
    display: inline-flex; align-items: center; gap: 0.5rem;
    color: var(--red-main); font-size: 0.9rem; font-weight: 600;
    text-decoration: none; margin-bottom: 2rem;
    transition: gap var(--transition);
}
.back-link:hover { gap: 0.8rem; }
.single-product-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start;
}
.sp-image {
    border-radius: 20px; overflow: hidden;
    background: var(--gray-100); box-shadow: var(--shadow-lg);
    min-height: 400px; display: flex; align-items: center; justify-content: center;
}
.sp-image img { width: 100%; height: 100%; object-fit: cover; }
.sp-no-image { font-size: 5rem; color: var(--gray-200); }
.sp-info .product-cat-badge { display: inline-block; margin-bottom: 1rem; }
.sp-info h1 { font-size: 2rem; font-weight: 800; color: var(--dark); margin-bottom: 1rem; line-height: 1.2; }
.sp-price { font-size: 1.5rem; font-weight: 800; color: var(--red-main); margin-bottom: 1.5rem; }
.sp-desc { color: var(--gray-600); line-height: 1.7; margin-bottom: 1.5rem; font-size: 1rem; }
.sp-specs { margin-bottom: 1.5rem; }
.sp-specs h4 { font-size: 1rem; font-weight: 700; margin-bottom: 0.75rem; display: flex; align-items: center; gap: 0.5rem; color: var(--dark); }
.sp-specs table { width: 100%; border-collapse: collapse; }
.sp-specs td { padding: 0.5rem 0.75rem; font-size: 0.9rem; border-bottom: 1px solid var(--gray-200); }
.sp-specs td:first-child { font-weight: 600; color: var(--gray-700); width: 40%; }
.sp-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.wa-btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.9rem 2rem; background: #25D366; color: var(--white);
    font-size: 0.95rem; font-weight: 600; text-decoration: none; border-radius: 50px;
    transition: all var(--transition); box-shadow: 0 6px 18px rgba(37,211,102,0.35);
}
.wa-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 25px rgba(37,211,102,0.5); }

@media (max-width: 768px) {
    .single-product-grid { grid-template-columns: 1fr; gap: 2rem; }
    .catalog-toolbar { flex-direction: column; align-items: stretch; }
    .search-box { min-width: unset; }
    .tab-switcher { width: 100%; }
    .tab-btn { flex: 1; justify-content: center; }
}