* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Inter', sans-serif; }
body { background-color: #f8fafc; color: #1e293b; line-height: 1.6; }
.container { width: 90%; max-width: 1200px; margin: 0 auto; }

.site-header { background: #ffffff; border-bottom: 1px solid #e2e8f0; padding: 15px 0; position: sticky; top: 0; z-index: 100; box-shadow: 0 1px 3px rgba(0,0,0,0.02); }
.header-container { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { font-size: 24px; background: #3b82f6; color: white; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 8px; box-shadow: 0 4px 12px rgba(59,130,246,0.3); }
.logo h1 { font-size: 20px; font-weight: 700; color: #0f172a; }

.desktop-nav { display: flex; gap: 15px; }
.desktop-nav a { text-decoration: none; color: #64748b; font-weight: 600; font-size: 14px; padding: 8px 16px; border-radius: 6px; transition: all 0.3s ease; }
.desktop-nav a:hover, .desktop-nav a.active { color: #2563eb; background: #eff6ff; }

.main-layout { display: flex; margin-top: 35px; gap: 30px; margin-bottom: 50px; }
.sidebar { width: 300px; background: #ffffff; padding: 20px; border-radius: 12px; border: 1px solid #e2e8f0; height: fit-content; box-shadow: 0 1px 3px rgba(0,0,0,0.02); }
.sidebar h3 { margin-bottom: 15px; font-size: 16px; color: #0f172a; font-weight: 700; padding-bottom: 8px; border-bottom: 2px solid #f1f5f9; }
.sidebar ul { list-style: none; }
.sidebar li { margin-bottom: 8px; border-radius: 8px; transition: all 0.2s ease; }
.sidebar li a { display: flex; align-items: center; gap: 12px; padding: 12px; color: #475569; text-decoration: none; font-size: 14px; font-weight: 500; border-radius: 8px; }
.cat-icon { display: flex; align-items: center; justify-content: center; }
.sidebar li.active, .sidebar li:hover { background: #eff6ff; }
.sidebar li.active a, .sidebar li:hover a { color: #2563eb; }

.content { flex: 1; }
.category-banner { background: #ffffff; padding: 25px; border-radius: 12px; border: 1px solid #e2e8f0; margin-bottom: 25px; display: flex; align-items: center; gap: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.02); }
.banner-icon { background: #f1f5f9; padding: 15px; border-radius: 10px; display: flex; align-items: center; justify-content: center; }
.category-banner h2 { font-size: 22px; color: #0f172a; margin-bottom: 4px; font-weight: 700; }
.category-banner p { color: #64748b; font-size: 14px; }

.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.product-card { background: #ffffff; border-radius: 12px; padding: 22px; border: 1px solid #e2e8f0; position: relative; display: flex; flex-direction: column; justify-content: space-between; transition: transform 0.3s ease, box-shadow 0.3s ease; box-shadow: 0 1px 3px rgba(0,0,0,0.02); }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 10px 25px -5px rgba(0,0,0,0.08); border-color: #cbd5e1; }

.badge { position: absolute; top: 18px; right: 18px; background: #dbeafe; color: #1d4ed8; font-size: 11px; padding: 4px 10px; border-radius: 20px; font-weight: 700; letter-spacing: 0.3px; }
.card-icon-header { margin-bottom: 15px; }

.product-card h4 { font-size: 16px; color: #0f172a; margin-bottom: 10px; font-weight: 700; line-height: 1.4; }
.product-card .desc { font-size: 13px; color: #64748b; margin-bottom: 25px; flex-grow: 1; line-height: 1.5; }

.price-action { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid #f1f5f9; padding-top: 15px; }
.price { font-size: 18px; font-weight: 800; color: #059669; }

.btn-whatsapp { background: #25d366; color: #fff; padding: 10px 16px; border-radius: 8px; text-decoration: none; font-size: 13px; font-weight: 600; display: flex; align-items: center; gap: 8px; transition: background 0.2s, transform 0.2s; box-shadow: 0 4px 12px rgba(37,211,102,0.25); }
.btn-whatsapp:hover { background: #20ba5a; transform: scale(1.02); }

footer { background: #ffffff; border-top: 1px solid #e2e8f0; padding: 25px 0; text-align: center; color: #64748b; font-size: 13px; }

/* Animasyonlar */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate-fade { animation: fadeIn 0.4s ease-out forwards; }
.animate-card { animation: fadeIn 0.5s ease-out forwards; }

@media (max-width: 768px) {
    .main-layout { flex-direction: column; }
    .sidebar { width: 100%; }
    .desktop-nav { display: none; }
}