:root {
    --bg: #f4f5f7;
    --card: #ffffff;
    --ink: #1f2d3d;
    --muted: #6b7785;
    --accent: #2f6fed;
    --danger: #d23f3f;
    --border: #e2e6ea;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--ink);
    padding-bottom: 72px; /* room for the tab bar */
}

header {
    background: var(--ink);
    color: #fff;
    padding: 14px 16px;
    padding-top: max(14px, env(safe-area-inset-top));
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 10;
}
header h1 { font-size: 1.05rem; margin: 0; }
.user-badge { font-size: 0.8rem; opacity: 0.85; }

main { padding: 16px; max-width: 720px; margin: 0 auto; }
.loading { color: var(--muted); }

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 14px;
}
.card h2 { margin: 0 0 8px; font-size: 1.1rem; }
.card h3 { margin: 0 0 4px; font-size: 1rem; }
.muted { color: var(--muted); font-size: 0.9rem; }
.section-title { margin: 4px 0 12px; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }

button, .btn {
    font: inherit;
    cursor: pointer;
    border: none;
    border-radius: 8px;
    padding: 10px 14px;
    background: var(--accent);
    color: #fff;
}
button.secondary { background: #e7ebf0; color: var(--ink); }
button.danger { background: var(--danger); }
button:disabled { opacity: 0.5; cursor: default; }

input, textarea, select {
    font: inherit;
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 10px;
    background: #fff;
}
label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 4px; }
label.checkbox { display: flex; align-items: center; gap: 8px; font-size: 1rem; color: var(--ink); margin: 6px 0 12px; }
label.checkbox input { width: auto; margin: 0; }
.card hr { border: none; border-top: 1px solid var(--border); margin: 12px 0; }

.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.gallery figure { margin: 0; background: var(--card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.gallery img { width: 100%; height: 140px; object-fit: cover; display: block; }
.gallery figcaption { padding: 6px 8px; font-size: 0.8rem; }
.gallery .author { color: var(--muted); }

.error { color: var(--danger); font-size: 0.9rem; }
.success { color: #1f8a4c; font-size: 0.9rem; }

.row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}
.row:last-child { border-bottom: none; }
.row button { padding: 6px 10px; margin-left: 6px; }
.card button { margin: 4px 6px 4px 0; }
input[readonly] { background: #f3f5f7; }

#tabbar {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    display: flex;
    background: var(--card);
    border-top: 1px solid var(--border);
    padding-bottom: env(safe-area-inset-bottom);
}
#tabbar button {
    flex: 1;
    background: none;
    color: var(--muted);
    border-radius: 0;
    padding: 12px 4px;
    font-size: 0.8rem;
}
#tabbar button.active { color: var(--accent); font-weight: 600; }