:root {
    color-scheme: light dark;
    --accent: #3a7d44;
    --bg: #f7f7f5;
    --panel: #ffffff;
    --text: #222;
    --border: #ddd;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

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

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--accent);
    color: #fff;
}
.site-header .brand { color: #fff; font-weight: bold; font-size: 1.1rem; }
.site-header nav { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.site-header nav a { color: #fff; }
.site-header .user-badge { opacity: 0.9; font-size: 0.9rem; }

.site-main { max-width: 1100px; margin: 0 auto; padding: 1rem 1.25rem 3rem; }
.site-footer { text-align: center; padding: 1rem; color: #888; font-size: 0.85rem; }

.layout { display: flex; gap: 1.5rem; align-items: flex-start; flex-wrap: wrap; }
.sidebar { flex: 0 0 220px; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 0.75rem; }
.sidebar h2 { font-size: 0.9rem; text-transform: uppercase; color: #888; margin: 0 0 0.5rem; }
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li { margin: 0.25rem 0; }
.sidebar .active { font-weight: bold; }
.content { flex: 1 1 500px; min-width: 0; }

.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.75rem; }
.gallery-grid figure { margin: 0; background: var(--panel); border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.gallery-grid img { width: 100%; height: 130px; object-fit: cover; display: block; }
.gallery-grid figcaption { padding: 0.35rem 0.5rem; font-size: 0.8rem; color: #555; }
.gallery-grid .inactive { opacity: 0.5; }

form.card, .card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; margin-bottom: 1rem; }
label { display: block; margin: 0.5rem 0 0.2rem; font-size: 0.9rem; }
input[type=text], input[type=password], input[type=email], input[type=file], textarea, select {
    width: 100%; padding: 0.4rem; border: 1px solid var(--border); border-radius: 4px; font-size: 1rem;
}
button, input[type=submit] {
    margin-top: 0.75rem; padding: 0.5rem 1rem; border: none; border-radius: 4px;
    background: var(--accent); color: #fff; cursor: pointer; font-size: 0.95rem;
}
button:hover, input[type=submit]:hover { opacity: 0.9; }
button.danger, .danger { background: #a33; }
.error { color: #a33; margin: 0.5rem 0; }
.notice { color: #555; margin: 0.5rem 0; }

table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.inline-form { display: inline; }

@media (prefers-color-scheme: dark) {
    :root { --bg: #16181a; --panel: #1f2224; --text: #eee; --border: #333; }
    .gallery-grid figcaption { color: #aaa; }
}