body {
    background: linear-gradient(120deg, #00c6ff, #0072ff);
    font-family: 'Segoe UI', Arial, sans-serif;
    min-height: 100vh;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.container {
    background: rgba(255,255,255,0.9);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    padding: 40px 32px;
    width: 90vw;
    max-width: 700px;
    min-width: 320px;
    text-align: center;
    overflow-x: auto;
}
h2 {
    color: #0072ff;
    letter-spacing: 2px;
    margin-bottom: 24px;
}
input[type="text"], input[type="password"], input[type="number"] {
    width: 80%;
    padding: 12px;
    margin: 12px 0;
    border-radius: 8px;
    border: 1px solid #00c6ff;
    outline: none;
    font-size: 16px;
    transition: border 0.2s;
}
input[type="text"]:focus, input[type="password"]:focus, input[type="number"]:focus {
    border-color: #0072ff;
}
button {
    padding: 14px 32px;
    background: linear-gradient(90deg, #0072ff, #00c6ff);
    color: #fff;
    font-weight: bold;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 18px;
    margin-top: 16px;
    box-shadow: 0 4px 8px rgba(0,114,255,0.1);
    transition: background 0.2s, transform 0.2s;
}
button:hover {
    background: linear-gradient(90deg, #00c6ff, #0072ff);
    transform: scale(1.07);
}
a {
    color: #0072ff;
    text-decoration: none;
    font-weight: bold;
    margin-top: 36px;
    display: inline-block;
    transition: color 0.2s;
}
a:hover {
    color: #00c6ff;
}
.error {
    color: #ff1744;
    background: #fff3f2;
    border: 1px solid #ff1744;
    border-radius: 8px;
    padding: 8px;
    margin: 12px 0;
}
.kategori-list { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center;}
.kategori-card { background: #f4f8ff; border-radius: 12px; box-shadow: 0 2px 8px rgba(0,114,255,0.07); padding: 24px 28px; cursor:pointer; transition:transform 0.15s;}
.kategori-card:hover { transform: scale(1.06); background: #eaf4fb;}
.urunler-list {display:flex; flex-wrap:wrap; gap:18px; justify-content:center;}
.urun-card {background:#fff; border-radius:14px; box-shadow:0 2px 8px rgba(0,0,0,0.08); width:120px; padding:12px;}
.urun-card img {width:100px; height:66px; object-fit:cover; border-radius:8px; margin-bottom:8px;}
.stok { font-weight:bold; color:#0072ff;}
.sepet { background:#fff; border-radius:10px; box-shadow:0 2px 8px rgba(0,0,0,0.05); padding:16px; margin-top:32px;}
.siparis-btn { background:linear-gradient(90deg,#00c6ff,#0072ff); color:#fff; padding:12px 24px; border-radius:8px; border:none; font-weight:bold; cursor:pointer;}