body {
    margin: 0;
    font-family: "Poppins", sans-serif;
    background: #0d0d0d;
    color: #eee;
}

header {
    text-align: center;
    padding: 12px;
    background: linear-gradient(180deg, #000000, #ff87008f);
    color: white;
    display: flex;
    justify-content: space-between;
}

header h1 {
    font-size: 22px;
    letter-spacing: 2px;
}

main {
    max-width: 800px;
    margin: 20px auto;
    padding: 10px;
    margin-bottom: 65px;
}

/* Akordeon */
details {
    margin-bottom: 30px;
    border-radius: 10px;
    overflow: hidden;
    background: linear-gradient(145deg, #1a1a1a, #111);
    box-shadow: 0 4px 12px #ff8700;
    transition: 0.3s;
}

details[open] {
    box-shadow: 0 6px 18px #ff8700;
}

summary {
    cursor: pointer;
    padding: 15px 20px;
    font-size: 18px;
    font-weight: bold;
    color: #ff8700;
    outline: none;
    list-style: none;
    position: relative;
}

summary::marker {
    display: none;
}

summary::after {
    content: "+";
    position: absolute;
    right: 20px;
    font-size: 20px;
    color: #fff;
    transition: transform 0.3s;
}

details[open] summary::after {
    content: "−";
    transform: rotate(180deg);
}

/* İçerik animasyonu */
.items {
    display: grid;
    /* sayfa genişliği 220px le düştüğünde colums 1 yap */
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 15px;
    padding: 0 20px 20px;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transform: translateY(-10px);
    transition: all 0.5s ease;
    padding-top: 8px;
}

details[open] .items {
    opacity: 1;
    max-height: 30000px;
    /* yeterli yüksekliği açmak için */
    transform: translateY(0);
}

/* Kartlar */
.card {
    background: #1a1a1a;
    border-radius: 12px;
    padding: 12px;
    text-align: center;
    box-shadow: 0 2px 2px #21a7a1b3, 0 -2px 2px #21a7a1b3;

    transition: 0.2s;
    opacity: 0;
    transform: translateY(15px);
    animation: fadeUp 0.5s forwards;
}

/* Kategori Detay Açılış Efekt Süresi */
details[open] .card {
    animation: fadeUp 1.9s ease forwards;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Arün Görsel  */
.card img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 10px;
}

/* Arün Başlık  */
.card h3 {

    font-size: 16px;
    color: #ff8700;
    margin-bottom: 5px;
}

.card .urun {
    float: left;
    font-size: 16px;
    color: #ff8700;
    margin-bottom: 5px;
}

/* Arün Detay  */
.card p {
    font-size: 13px;
    color: #bbb;
    margin-bottom: 8px;
}


.card .detay {
    margin-top: 30px;
    font-size: 13px;
    color: #bbb;
    margin-bottom: 8px;
}


/* Arün Fiyat  */
.card .price {
    font-weight: bold;
    color: #fff;
    text-shadow: 0 0 6px #3fa721b3;
}

.card .fiyat {
    float: right;
    font-weight: bold;
    color: #fff;
    text-shadow: 0 0 26px #3fa721b3;
}