body {
    margin: 0;
    font-family: Helvetica, Arial, sans-serif;
    background: #0a0a0a;
    color: #fff;
}

/* NAV */
nav {
    position: fixed;
    width: 100%;
    top: 0;
    padding: 20px;
    text-align: center;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
}

nav a {
    color: #ccc;
    margin: 0 20px;
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 2px;
}

nav a:hover {
    color: #fff;
}

/* HERO */
.hero {
    height: 90vh;
    background: url('../images/hero.jpg') center/cover no-repeat;
}

/* GALLERY */
.gallery {
    padding: 60px 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 8px;
}

/* CLEAN HOVER */
.gallery img {
    width: 100%;
    display: block;
    transition: opacity 0.3s ease;
    cursor: pointer;
}

.gallery img:hover {
    opacity: 0.75;
}

/* LIGHTBOX */
.lightbox {
    display: none;
    position: fixed;
    z-index: 999;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.95);
}

.lightbox img {
    display: block;
    margin: 5% auto;
    max-width: 90%;
    max-height: 85vh;
}

/* OPEN */
.lightbox:target {
    display: block;
}