:root {
    --bg: #fafaf8;
    --surface: #ffffff;
    --text: #1e1e1e;
    --text-muted: #6b6b6b;
    --border: #e2e0da;
    --accent: #b5563c;
    --accent-hover: #954634;
    --error: #b3261e;
    --success: #2e7d32;
    --radius: 8px;
    --max-width: 1100px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

h1, h2, h3 { font-weight: 600; line-height: 1.2; }

/* --- Site header / nav ------------------------------------------------ */

.site-header {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2.5rem 1.5rem 1rem;
    text-align: center;
}

.site-header h1 { font-size: 2rem; margin: 0; }
.site-header h1 a { color: var(--text); }
.site-tagline { color: var(--text-muted); margin: .5rem 0 0; }

.collection-nav {
    max-width: var(--max-width);
    margin: 0 auto 2rem;
    padding: 0 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    justify-content: center;
}

.collection-nav a {
    padding: .4rem .9rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    color: var(--text);
    font-size: .9rem;
}

.collection-nav a:hover { text-decoration: none; border-color: var(--accent); }
.collection-nav a.is-active { background: var(--accent); border-color: var(--accent); color: #fff; }

.site-footer {
    max-width: var(--max-width);
    margin: 3rem auto 2rem;
    padding: 1rem 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: .85rem;
}

/* --- Gallery grid ------------------------------------------------------ */

.gallery { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    display: block;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    color: var(--text);
    transition: transform .15s ease, box-shadow .15s ease;
}

.gallery-item:hover {
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,.08);
}

.gallery-item__image { aspect-ratio: 1 / 1; background: #f0efe9; }
.gallery-item__image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gallery-item__placeholder {
    width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
    color: var(--text-muted); font-size: .85rem;
}

.gallery-item__meta { padding: .7rem .9rem; display: flex; justify-content: space-between; gap: .5rem; }
.gallery-item__number { color: var(--text-muted); font-size: .85rem; }
.gallery-item__title { font-weight: 500; }

.empty-state { color: var(--text-muted); text-align: center; padding: 3rem 0; }

/* --- Work detail / slider ---------------------------------------------- */

.work-detail { max-width: 800px; margin: 0 auto; padding: 0 1.5rem 3rem; }
.work-detail__title { margin: .5rem 0 1rem; }
.work-detail__collections { margin: 0 0 1.5rem; }

.tag {
    display: inline-block;
    padding: .25rem .7rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: .85rem;
    margin-right: .4rem;
}

.slider { position: relative; background: #f0efe9; border-radius: var(--radius); overflow: hidden; }
.slider__viewport { position: relative; aspect-ratio: 4 / 3; }
.slider__slide {
    position: absolute; inset: 0; display: none; align-items: center; justify-content: center;
}
.slider__slide[data-active] { display: flex; }
.slider__slide img { max-width: 100%; max-height: 100%; object-fit: contain; }

.slider__nav {
    position: absolute; top: 50%; transform: translateY(-50%);
    background: rgba(255,255,255,.85); border: 1px solid var(--border); border-radius: 50%;
    width: 2.5rem; height: 2.5rem; cursor: pointer; font-size: 1.1rem;
}
.slider__nav--prev { left: .75rem; }
.slider__nav--next { right: .75rem; }
.slider__nav:hover { background: #fff; }

.slider__dots { display: flex; justify-content: center; gap: .4rem; padding: .8rem; background: var(--surface); }
.slider__dot {
    border: 1px solid var(--border); background: var(--surface); border-radius: 999px;
    padding: .3rem .7rem; font-size: .8rem; cursor: pointer; color: var(--text-muted);
}
.slider__dot.is-active { background: var(--accent); border-color: var(--accent); color: #fff; }

.back-link { margin: 1.5rem 0 .5rem; }

/* --- Admin --------------------------------------------------------------- */

.admin-body { background: var(--bg); }

.admin-nav {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
    gap: 1rem; padding: 1rem 1.5rem; background: var(--surface); border-bottom: 1px solid var(--border);
}
.admin-nav__brand { font-weight: 600; color: var(--text); }
.admin-nav nav { display: flex; gap: 1rem; flex-wrap: wrap; }

.admin-main { max-width: var(--max-width); margin: 0 auto; padding: 2rem 1.5rem 4rem; }

.admin-table { width: 100%; border-collapse: collapse; margin-top: 1.5rem; background: var(--surface); }
.admin-table th, .admin-table td {
    text-align: left; padding: .6rem .8rem; border-bottom: 1px solid var(--border); vertical-align: middle;
}
.admin-table__actions { display: flex; gap: .8rem; align-items: center; }

.button, button, input[type="submit"] {
    display: inline-block; background: var(--accent); color: #fff; border: none;
    border-radius: var(--radius); padding: .6rem 1.1rem; font-size: .95rem; cursor: pointer;
}
.button:hover, button:hover { background: var(--accent-hover); color: #fff; text-decoration: none; }

.link-button {
    background: none; border: none; color: var(--accent); padding: 0; font-size: .9rem;
    cursor: pointer; text-decoration: underline;
}
.link-button:hover { background: none; color: var(--accent-hover); }

.admin-form { display: flex; flex-direction: column; gap: .3rem; max-width: 520px; margin-top: 1rem; }
.admin-form label { font-weight: 500; margin-top: .8rem; }
.admin-form input[type="text"],
.admin-form input[type="number"],
.admin-form input[type="password"],
.admin-form input[type="file"] {
    padding: .55rem .7rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem;
}
.admin-form fieldset { border: 1px solid var(--border); border-radius: var(--radius); margin-top: 1.2rem; padding: 1rem; }
.admin-form legend { padding: 0 .4rem; color: var(--text-muted); font-size: .9rem; }
.admin-form button { margin-top: 1.5rem; align-self: flex-start; }
.admin-form--inline { flex-direction: row; align-items: center; max-width: none; margin-top: 0; }
.admin-form--inline input[type="text"] { flex: 1; }
.admin-form--inline button { margin-top: 0; }

.checkbox-label { display: flex; align-items: center; gap: .5rem; font-weight: normal; margin: .3rem 0; }
.checkbox-label input { width: auto; }

.version-edit-row { display: flex; align-items: center; gap: .8rem; margin-bottom: 1rem; flex-wrap: wrap; }
.version-edit-thumb { width: 64px; height: 64px; object-fit: cover; border-radius: 4px; border: 1px solid var(--border); }

.hint { color: var(--text-muted); font-size: .9rem; }

.flash { padding: .7rem 1rem; border-radius: var(--radius); margin: 1rem 0; }
.flash--success { background: #e8f5e9; color: var(--success); }
.flash--error { background: #fdecea; color: var(--error); }

.form-error { color: var(--error); }

/* --- Login --------------------------------------------------------------- */

.login-page {
    min-height: 80vh; display: flex; align-items: center; justify-content: center; padding: 1.5rem;
}
.login-form {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 2rem; max-width: 360px; width: 100%; text-align: center;
}
.login-form h1 { margin: 0 0 .2rem; font-size: 1.4rem; }
.login-subtitle { color: var(--text-muted); margin: 0 0 1.5rem; }
.login-form label { display: block; text-align: left; font-weight: 500; margin-bottom: .3rem; }
.login-form input { width: 100%; padding: .6rem .7rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem; margin-bottom: 1rem; }
.login-form button { width: 100%; }
.login-form .back-link { margin: 1rem 0 0; font-size: .9rem; }