:root {
    --primary: #007bff;
    --bg: #f8f9fa;
    --text: #333;
    --border: #ddd;
    --success: #28a745;
    --danger: #dc3545;
}

body { font-family: -apple-system, system-ui, sans-serif; margin: 0; background: var(--bg); color: var(--text); line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; }
a { text-decoration: none; color: var(--primary); }

header { background: #fff; border-bottom: 1px solid var(--border); padding: 1rem 0; margin-bottom: 2rem; }
nav { display: flex; justify-content: space-between; align-items: center; }
.brand { font-size: 1.2rem; color: #000; }
.links a { margin-left: 1rem; color: #555; }

/* Search */
.search-section { max-width: 800px; margin: 0 auto; }
.search-box-wrapper { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
input[type=text] { flex: 1; padding: 0.8rem; border: 1px solid var(--border); border-radius: 4px; font-size: 1rem; }
button { padding: 0.8rem 1.5rem; background: var(--primary); color: #fff; border: none; border-radius: 4px; cursor: pointer; font-size: 1rem; }
button:hover { opacity: 0.9; }
.hidden { display: none; }

.results-list { display: flex; flex-direction: column; gap: 1rem; }
.result-item { background: #fff; padding: 1rem; border: 1px solid var(--border); border-radius: 4px; }
.result-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 0.5rem; }
.result-title { font-weight: bold; font-size: 1.1rem; }
.result-meta { font-size: 0.85rem; color: #666; display: flex; gap: 0.5rem; align-items: center; }
.badge { background: #eee; padding: 2px 6px; border-radius: 4px; font-size: 0.75rem; text-transform: uppercase; }
.result-preview { color: #555; margin-bottom: 0.5rem; }
.result-sources { font-size: 0.85rem; color: #888; }

/* Library */
.atb-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; }
.atb-card { background: #fff; padding: 1rem; border: 1px solid var(--border); border-radius: 4px; }
.atb-card.status-error { border-left: 4px solid var(--danger); }
.atb-card.status-ok { border-left: 4px solid var(--success); }
.atb-card h3 { margin: 0 0 0.5rem 0; }

/* Viewer */
.viewer-layout { display: flex; gap: 1rem; height: calc(100vh - 150px); }
.tree-panel { flex: 1; background: #fff; border: 1px solid var(--border); overflow-y: auto; padding: 1rem; max-width: 350px; }
.detail-panel { flex: 2; background: #fff; border: 1px solid var(--border); overflow-y: auto; padding: 1rem; }

/* Tree */
ul.tree { list-style: none; padding-left: 1.2rem; }
ul.tree li { margin: 0.2rem 0; }
.tree-toggle { cursor: pointer; color: #666; display: inline-block; width: 1rem; }
.tree-label { cursor: pointer; }
.tree-label:hover { text-decoration: underline; }
.tree-label.active { font-weight: bold; color: var(--primary); }

/* Details */
.detail-row { margin-bottom: 1rem; }
.label-key { font-weight: bold; display: block; color: #555; font-size: 0.9rem; }
.raw-box { background: #f4f4f4; padding: 1rem; overflow-x: auto; border-radius: 4px; font-family: monospace; font-size: 0.9rem; }
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip { background: #e9ecef; padding: 2px 8px; border-radius: 10px; font-size: 0.85rem; }

/* Admin */
.stats-grid { display: flex; gap: 1rem; margin-bottom: 2rem; }
.stat-card { background: #fff; padding: 1rem; flex: 1; border: 1px solid var(--border); text-align: center; }
.stat-card h3 { margin: 0; font-size: 0.9rem; color: #666; }
.stat-card p { font-size: 2rem; margin: 0.5rem 0 0 0; font-weight: bold; }
.stat-card.ok p { color: var(--success); }
.stat-card.error p { color: var(--danger); }