/* --- CSS Değişkenleri & Renk Mimarisi (Amber Gold & Kurumsal) --- */
:root {
    --bg-color: #F8FAFC;
    --surface-color: #FFFFFF;
    --text-main: #0F172A;
    --text-muted: #64748B;
    --primary: #D97706;
    --primary-hover: #B45309;
    --accent: #F59E0B;
    --border-color: #E2E8F0;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --transition: all 0.25s ease-in-out;
}

[data-theme="dark"] {
    --bg-color: #0F172A;
    --surface-color: #1E293B;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --primary: #F59E0B;
    --primary-hover: #D97706;
    --accent: #FBBF24;
    --border-color: #334155;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

/* --- Genel Reset & Tipografi --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
}

/* --- Header --- */
.site-header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 700;
    font-size: 1.25rem;
}
.logo svg { color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 12px; }

.theme-btn {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: pointer;
    transition: var(--transition);
}
.theme-btn:hover { border-color: var(--primary); }

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }
.theme-btn { justify-content: center; }

/* --- Layout & Grid (Desktop 4 Sütun, Mobil 2 Sütun) --- */
.main-layout {
    display: flex;
    gap: 30px;
    padding-top: 30px;
    padding-bottom: 60px;
}

.sidebar {
    width: 260px;
    flex-shrink: 0;
}

.catalog-section {
    flex-grow: 1;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* Mobil: 2 Sütun */
    gap: 16px;
}

@media (min-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(4, 1fr); /* Desktop: 4 Sütun */
        gap: 24px;
    }
}

/* --- Sidebar & Filtreler --- */
.sidebar {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    height: fit-content;
    position: sticky;
    top: 95px;
}

.filter-group { margin-bottom: 20px; }
.filter-group label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 8px; color: var(--text-main); }

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0 10px;
}
.search-box svg { color: var(--text-muted); flex-shrink: 0; }
.search-box input {
    width: 100%;
    background: transparent;
    border: none;
    padding: 10px 8px;
    color: var(--text-main);
    font-size: 0.9rem;
    outline: none;
}

.category-list { display: flex; flex-direction: column; gap: 6px; max-height: 300px; overflow-y: auto; }
.category-btn {
    background: transparent;
    border: none;
    text-align: left;
    padding: 8px 12px;
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}
.category-btn:hover, .category-btn.active {
    background-color: var(--bg-color);
    color: var(--primary);
    font-weight: 600;
}

/* --- Ürün Kartları --- */
.product-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}
.card-img-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background-color: var(--bg-color);
    overflow: hidden;
}
.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.product-card:hover .card-img-wrapper img { transform: scale(1.05); }

.card-body { padding: 14px; display: flex; flex-direction: column; flex-grow: 1; }
.card-category { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; font-weight: 600; margin-bottom: 4px; }
.card-title { font-size: 0.95rem; font-weight: 600; color: var(--text-main); margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-footer-info { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 8px; border-top: 1px solid var(--border-color); }
.card-price { font-size: 1.05rem; font-weight: 700; color: var(--primary); }
.card-sku { font-size: 0.75rem; color: var(--text-muted); }

/* --- Bilgi Barı & Butonlar ---
.catalog-info-bar { margin-bottom: 16px; font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
.load-more-wrapper { text-align: center; margin-top: 40px; }

.btn-primary {
    background-color: var(--primary);
    color: #FFFFFF;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.btn-primary:hover { background-color: var(--primary-hover); }

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 14px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
}

/* --- Mobil Responsive Uyumları --- */
.mobile-only { display: none; }
@media (max-width: 1023px) {
    .mobile-only { display: flex; }
    .sidebar {
        position: fixed;
        top: 0; left: -100%;
        width: 85%; max-width: 320px;
        height: 100vh;
        z-index: 1000;
        background-color: var(--surface-color);
        box-shadow: 10px 0 25px rgba(0,0,0,0.2);
        transition: left 0.3s ease;
        overflow-y: auto;
    }
    .sidebar.active { left: 0; }
    .sidebar-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 20px;
        padding-bottom: 10px;
        border-bottom: 1px solid var(--border-color);
    }
    .close-btn { background: none; border: none; font-size: 1.8rem; color: var(--text-main); cursor: pointer; }
}

/* --- Modal Tasarımı --- */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    opacity: 1;
    transition: opacity 0.3s ease;
}
.modal-container {
    background-color: var(--surface-color);
    width: 100%;
    max-width: 850px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
}
.modal-close-btn {
    position: absolute;
    top: 16px; right: 16px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    width: 36px; height: 36px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 10;
    display: flex; align-items: center; justify-content: center;
}
.modal-body { padding: 30px; }

.modal-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}
@media (min-width: 768px) {
    .modal-grid { grid-template-columns: 1fr 1fr; }
}

.modal-gallery-main { width: 100%; aspect-ratio: 1/1; border-radius: 10px; background: var(--bg-color); overflow: hidden; margin-bottom: 10px; }
.modal-gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.modal-thumbs { display: flex; gap: 8px; }
.modal-thumb { width: 60px; height: 60px; border-radius: 6px; overflow: hidden; cursor: pointer; border: 2px solid transparent; }
.modal-thumb.active { border-color: var(--primary); }
.modal-thumb img { width: 100%; height: 100%; object-fit: cover; }

.modal-info h2 { font-size: 1.5rem; margin-bottom: 8px; color: var(--text-main); }
.modal-sku { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px; }
.modal-price { font-size: 1.5rem; font-weight: 700; color: var(--primary); margin-bottom: 16px; }
.modal-desc { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 24px; line-height: 1.6; }

.cro-buttons { display: flex; flex-direction: column; gap: 12px; margin-bottom: 30px; }
.btn-whatsapp {
    background-color: #25D366; color: #FFFFFF; border: none; padding: 12px 20px; border-radius: 50px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 10px; transition: var(--transition); text-decoration: none;
}
.btn-whatsapp:hover { background-color: #20ba5a; }

.btn-facebook {
    background-color: #1877F2; color: #FFFFFF; border: none; padding: 12px 20px; border-radius: 50px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 10px; transition: var(--transition); text-decoration: none;
}
.btn-facebook:hover { background-color: #166fe5; }

/* Benzer Ürünler */
.similar-section h4 { font-size: 1.1rem; margin-bottom: 14px; border-top: 1px solid var(--border-color); padding-top: 20px; }
.similar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.similar-card { background: var(--bg-color); border-radius: 8px; padding: 8px; cursor: pointer; border: 1px solid var(--border-color); }
.similar-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; border-radius: 4px; margin-bottom: 6px; }
.similar-card p { font-size: 0.8rem; font-weight: 600; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }

/* --- Footer --- */
.site-footer { background-color: var(--surface-color); border-top: 1px solid var(--border-color); padding: 40px 0 20px 0; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 30px; margin-bottom: 30px; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 2fr 1fr; } }
.footer-col h4 { font-size: 1rem; margin-bottom: 12px; color: var(--text-main); }
.footer-col p { font-size: 0.9rem; color: var(--text-muted); }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-links a { text-decoration: none; color: var(--text-muted); font-size: 0.9rem; transition: var(--transition); }
.footer-links a:hover { color: var(--primary); }
.footer-bottom { text-align: center; border-top: 1px solid var(--border-color); padding-top: 20px; font-size: 0.8rem; color: var(--text-muted); }

/* --- Skeleton Loader --- */
.hidden { display: none !important; }
.skeleton-card { background: var(--surface-color); border: 1px solid var(--border-color); border-radius: 12px; padding: 14px; height: 260px; display: flex; flex-direction: column; gap: 12px; }
.skeleton-img { width: 100%; aspect-ratio: 1/1; background: var(--bg-color); border-radius: 8px; animation: pulse 1.5s infinite; }
.skeleton-line { height: 14px; background: var(--bg-color); border-radius: 4px; animation: pulse 1.5s infinite; }
.skeleton-line.short { width: 60%; }
@keyframes pulse { 0% { opacity: 0.6; } 50% { opacity: 1; } 100% { opacity: 0.6; } }