* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: #f4f6f9;
    color: #1e293b;
}

/* HEADER VE SEPET ROZETİ */
header {
    background-color: #0f172a;
    color: white;
    padding: 15px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.logo { margin: 0; font-size: 26px; }
.logo span { color: #38bdf8; }

nav a {
    color: #cbd5e1;
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
    transition: 0.2s;
}
nav a:hover, nav a.aktif { color: #ffffff; }

.sepet-buton {
    background-color: #2563eb;
    color: white !important;
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: bold;
}
.sepet-buton:hover { background-color: #1d4ed8; }

/* KATEGORİ BUTONLARI */
.kategori-bar {
    text-align: center;
    padding: 25px;
    background: white;
    border-bottom: 1px solid #e2e8f0;
}
.kat-btn {
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    padding: 10px 20px;
    margin: 5px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    color: #334155;
    transition: 0.2s;
}
.kat-btn:hover { background: #0f172a; color: white; }

/* ÜRÜN VİTRİNİ (GRID) */
.urun-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 25px;
    padding: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.urun-karti {
    background: white;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid #e2e8f0;
    transition: transform 0.2s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.urun-karti:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0,0,0,0.1);
    border-color: #38bdf8;
}
.urun-karti img {
    width: 100%;
    height: 180px;
    object-fit: contain;
    margin-bottom: 15px;
}
.urun-fiyat {
    font-size: 22px;
    font-weight: 900;
    color: #0f172a;
    margin: 10px 0;
}
.ekle-btn {
    background-color: #10b981;
    color: white;
    border: none;
    padding: 12px;
    width: 100%;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
}
.ekle-btn:hover { background-color: #059669; }

/* SEPET SAYFASI (İKİ SÜTUNLU YAPI) */
.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: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
th, td { padding: 15px; text-align: left; border-bottom: 1px solid #e2e8f0; }
th { background: #0f172a; color: white; }
td img { width: 60px; height: 60px; object-fit: contain; border-radius: 5px; border: 1px solid #eee; }
.toplam-fiyat { font-size: 22px; font-weight: 900; color: #10b981; }
.urun-sil-btn { background: #ef4444; color: white; border: none; padding: 6px 12px; border-radius: 5px; cursor: pointer; }
.temizle-btn { margin-top: 15px; background: #64748b; color: white; border: none; padding: 10px 15px; border-radius: 5px; cursor: pointer;}

fieldset {
    background: white;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
legend { font-weight: 900; font-size: 18px; color: #0f172a; padding: 0 10px; }
.form-grup { margin-bottom: 15px; }
.form-grup label { display: block; font-size: 13px; font-weight: bold; margin-bottom: 5px; color: #475569; }
.form-grup input, .form-grup textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-family: inherit;
}
.yan-yana-input { display: flex; gap: 10px; }
.satinal-btn {
    width: 100%;
    background: #2563eb;
    color: white;
    border: none;
    padding: 15px;
    font-size: 16px;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    margin-top: 10px;
}
.satinal-btn:hover { background: #1d4ed8; }