* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: rgb(209, 209, 17, 0.5);
    color: #222;
}

/* Üst başlık */
header {
    background: rgb(209, 209, 17, 0.5);
    color: white;
    padding: 22px 15px;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 26px;
}

/* Galeri */
main {
    width: 100%;
    max-width: 1200px;
    margin: 45px auto 0;
    padding: 20px;
}


.gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

/* Galeri fotoğrafları */
.gallery img {
    width: 100%;
    height: 230px;
    object-fit: cover;
    border-radius: 12px;
    cursor: pointer;
    display: block;

    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease;
}

.gallery img:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* Büyük fotoğraf ekranı */
.lightbox {
    position: fixed;
    inset: 0;

    width: 100%;
    height: 100%;

    background: rgba(0, 0, 0, 0.92);

    display: none;

    align-items: center;
    justify-content: center;

    z-index: 9999;

    overflow: hidden;
}

/* Büyük fotoğraf */
.lightbox img {
    max-width: 90%;
    max-height: 90%;

    object-fit: contain;

    border-radius: 8px;

    transition: transform 0.2s ease;

    user-select: none;
    -webkit-user-drag: none;
}

/* Kapatma */
.close {
    position: absolute;

    top: 15px;
    right: 20px;

    width: 50px;
    height: 50px;

    border: none;
    border-radius: 50%;

    background: rgba(255, 255, 255, 0.15);

    color: white;

    font-size: 35px;
    line-height: 40px;

    cursor: pointer;

    z-index: 10000;
}

.close:hover {
    background: rgba(255, 255, 255, 0.3);
}


/* Tablet */
@media (max-width: 900px) {

    .gallery {
        grid-template-columns: repeat(3, 1fr);
    }

    .gallery img {
        height: 210px;
    }
}


/* Telefon */
@media (max-width: 600px) {

    main {
        padding: 10px;
    }

    header {
        padding: 18px 10px;
    }

    header h1 {
        font-size: 22px;
    }

    .gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .gallery img {
        height: 170px;
        border-radius: 8px;
    }

    .lightbox img {
        max-width: 96%;
        max-height: 85%;
    }

    .close {
        top: 10px;
        right: 10px;

        width: 45px;
        height: 45px;

        font-size: 30px;
    }
}


/* Çok küçük telefon */
@media (max-width: 380px) {

    .gallery {
        grid-template-columns: 1fr;
    }

    .gallery img {
        height: 240px;
    }
}

/* Fotoğraf kartı #f5f5f5 */
.gallery-item {
    background: rgba(255, 255, 255, 0.45);
    border-radius: 12px;
    overflow: hidden;
    padding-bottom: 12px;
}

/* Fotoğraf başlığı */
.photo-title {
    display: block;
    margin: 12px 12px 6px;
    color: #111;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.35;
}

/* Fotoğraf açıklaması */
.photo-description {
    display: block;
    margin: 0 12px;
    color: #555;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.5;
}