:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #262b35;
  --text: #e6e8eb;
  --muted: #8b93a1;
  --accent: #d4af37;
  --accent-dim: #7a6a2c;
  --error: #e05252;
  --warn: #e0a952;
  --ok: #4caf7d;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.overlay {
  position: fixed; inset: 0; background: var(--bg);
  display: flex; align-items: center; justify-content: center;
}
/* Author-stylesheet display rules beat the UA default [hidden]{display:none}
   regardless of selector specificity, so `.overlay`'s own `display: flex`
   above silently wins even after JS sets the `hidden` attribute — this
   makes the hide explicit and higher-specificity so it actually takes effect. */
.overlay[hidden] { display: none; }
.login-box { text-align: center; }
.login-box input { padding: 10px; margin: 10px 0; width: 240px; }
.error-text { color: var(--error); }

header {
  display: flex; align-items: center; gap: 20px;
  padding: 12px 20px; border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.brand { font-weight: 600; font-size: 18px; }
.brand span { color: var(--muted); font-weight: 400; }
.env-badge {
  background: #3a2f0a; color: var(--accent);
  border: 1px solid var(--accent-dim); border-radius: 20px;
  padding: 4px 12px; font-size: 12px; font-weight: 600;
}
nav { display: flex; gap: 4px; margin-left: auto; }
.tab-btn {
  background: transparent; border: none; color: var(--muted);
  padding: 8px 14px; border-radius: 6px; cursor: pointer; font-size: 14px;
}
.tab-btn.active, .tab-btn:hover { background: #232733; color: var(--text); }

main { padding: 24px; max-width: 1200px; margin: 0 auto; }
.tab { display: none; }
.tab.active { display: block; }
h2 { margin-top: 0; }
.muted { color: var(--muted); font-size: 13px; }

.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 18px; margin-bottom: 20px;
}
.panel h3 { margin-top: 0; }

.toolbar { display: flex; gap: 8px; margin-bottom: 12px; align-items: center; flex-wrap: wrap; }
.toolbar input { flex: 1; min-width: 160px; }

input, select, textarea, button {
  font-family: inherit; font-size: 14px;
  background: #0d0f14; color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px;
}
textarea { width: 100%; min-height: 70px; }
button { cursor: pointer; background: var(--accent); color: #1a1608; border: none; font-weight: 600; }
button.secondary { background: #232733; color: var(--text); font-weight: 500; }
button:disabled { opacity: 0.4; cursor: not-allowed; }
button:hover:not(:disabled) { filter: brightness(1.1); }

.form-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px; margin-bottom: 14px;
}
.form-grid label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
.form-grid label.wide { grid-column: 1 / -1; }
.form-actions { display: flex; gap: 8px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; margin: 10px 0; font-size: 13px; }
.checkbox-row input { width: auto; }

.data-table { width: 100%; border-collapse: collapse; margin-top: 10px; }
.data-table th, .data-table td {
  text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 13px;
}
.data-table th { color: var(--muted); font-weight: 500; }
.data-table tr:hover { background: #1c202a; }
.data-table input { width: 100%; min-width: 60px; padding: 4px 6px; }
.link-btn { background: none; color: var(--accent); border: none; padding: 0; font-weight: 500; }

.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.kpi-card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.kpi-card .value { font-size: 26px; font-weight: 700; }
.kpi-card .label { color: var(--muted); font-size: 12px; margin-top: 4px; }

.chip { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 11px; margin: 2px; }
.chip.err { background: #3a1414; color: var(--error); }
.chip.warn { background: #3a2f0a; color: var(--warn); }
.chip.ok { background: #123a24; color: var(--ok); }

.aspect-row { display: flex; align-items: center; gap: 10px; padding: 6px 0; border-bottom: 1px solid var(--border); }
.aspect-row label { width: 220px; font-size: 13px; }
.aspect-row input { flex: 1; }
.aspect-row.missing-required label { color: var(--error); }
.aspect-row.missing-recommended label { color: var(--warn); }

.dimension-row { display: flex; gap: 8px; margin-bottom: 8px; align-items: center; }
.dimension-row input { flex: 1; }

.validation-list { list-style: none; padding: 0; margin: 8px 0; }
.validation-list li { padding: 4px 0; font-size: 13px; }
.validation-list li.error { color: var(--error); }
.validation-list li.warning { color: var(--warn); }
.validation-list li.recommendation { color: var(--muted); }