* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: #f8fafc;
    color: #0f172a;
}

header {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    padding: 20px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.logo-alan { display: flex; flex-direction: column; }
.logo { margin: 0; font-size: 28px; font-weight: 800; letter-spacing: 0.5px; }
.logo span { color: #38bdf8; }
.tagline { margin: 2px 0 0 0; font-size: 12px; color: #94a3b8; font-weight: 300; }

nav a {
    color: #cbd5e1;
    text-decoration: none;
    margin-left: 20px;
    font-weight: 600;
    transition: 0.2s;
}
nav a:hover, nav a.aktif { color: #ffffff; }

.sepet-buton {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white !important;
    padding: 12px 24px;
    border-radius: 30px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.sepet-buton:hover { transform: translateY(-2px); box-shadow: 0 6px 15px rgba(37, 99, 235, 0.4); }

.kategori-bar {
    text-align: center;
    padding: 20px;
    background: white;
    border-bottom: 1px solid #e2e8f0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    overflow-x: auto;
    white-space: nowrap;
}
.kat-btn {
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    padding: 10px 20px;
    margin: 4px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    color: #334155;
    transition: 0.2s;
}
.kat-btn:hover, .kat-btn.aktif { background: #0f172a; color: white; border-color: #0f172a; }

.urun-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    padding: 40px;
    max-width: 1300px;
    margin: 0 auto;
}

.urun-karti {
    background: white;
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.04);
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
}
.urun-karti:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 35px rgba(56, 189, 248, 0.15);
    border-color: #38bdf8;
}
.urun-karti img {
    width: 100%;
    height: 190px;
    object-fit: contain;
    margin-bottom: 15px;
    transition: transform 0.3s;
}
.urun-karti:hover img { transform: scale(1.05); }

.urun-karti h3 {
    font-size: 16px;
    font-weight: 700;
    color: #1e293b;
    margin: 10px 0;
    height: 40px;
    overflow: hidden;
}

.urun-detay-bilgi {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: #64748b;
    margin-bottom: 8px;
}
.puan { color: #f59e0b; font-weight: bold; }

.urun-fiyat {
    font-size: 22px;
    font-weight: 900;
    color: #0f172a;
    margin: 8px 0 16px 0;
}

.ekle-btn {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    padding: 12px;
    width: 100%;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
    transition: 0.2s;
}
.ekle-btn:hover { opacity: 0.9; transform: scale(1.02); }

.daha-fazla-btn {
    background: white;
    color: #0f172a;
    border: 2px solid #0f172a;
    padding: 14px 35px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 30px;
    cursor: pointer;
    transition: 0.3s;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
.daha-fazla-btn:hover { background: #0f172a; color: white; transform: translateY(-2px); }

.sepet-sayfasi-ikiye-bol {
    display: flex;
    gap: 30px;
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}
.sepet-tablo-alani { flex: 2; }
.odeme-form-alani { flex: 1; }

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}
th, td { padding: 18px; text-align: left; border-bottom: 1px solid #f1f5f9; }
th { background: #0f172a; color: white; font-weight: 600; font-size: 14px; }
td img { width: 65px; height: 65px; object-fit: contain; border-radius: 8px; border: 1px solid #e2e8f0; background: #fff; }
.toplam-fiyat { font-size: 24px; font-weight: 900; color: #10b981; }
.urun-sil-btn { background: #fee2e2; color: #ef4444; border: none; padding: 8px 14px; border-radius: 6px; cursor: pointer; font-weight: 600; transition: 0.2s; }
.urun-sil-btn:hover { background: #ef4444; color: white; }
.temizle-btn { margin-top: 15px; background: #64748b; color: white; border: none; padding: 12px 20px; border-radius: 8px; cursor: pointer; font-weight: 600; }
.temizle-btn:hover { background: #475569; }

fieldset {
    border: 1px solid #cbd5e1;
    border-radius: 16px;
    padding: 25px;
    background: white;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}
legend { font-weight: 800; color: #0f172a; padding: 0 10px; font-size: 16px; }
.form-grup { margin-bottom: 18px; width: 100%; }
.form-grup label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 13px; color: #475569; }
.form-grup input, .form-grup textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-size: 14px;
    background: #f8fafc;
}
.form-grup input:focus, .form-grup textarea:focus { outline: none; border-color: #2563eb; background: white; }
.satinal-btn {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    border: none;
    padding: 14px;
    width: 100%;
    border-radius: 10px;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    margin-top: 10px;
}
.satinal-btn:hover { opacity: 0.95; transform: scale(1.01); }