:root {
  color-scheme: dark;
  --bg: #0b1220;
  --panel: #121a2b;
  --text: #e6ecf5;
  --muted: #8899b0;
  --accent: #4aa8ff;
  --success: #4ade80;
  --warn: #fbbf24;
  --danger: #f87171;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font: 15px/1.4 system-ui, -apple-system, Segoe UI, sans-serif; }

.auth-shell { min-height: 100%; display: grid; place-items: center; padding: 24px; }
header { text-align: center; margin-bottom: 24px; }
header h1 { margin: 0 0 4px; font-size: 22px; }
.subtitle { color: var(--muted); margin: 0; font-size: 13px; }
.auth-card { background: var(--panel); border-radius: 12px; padding: 24px; width: min(360px, 100%); box-shadow: 0 8px 24px rgba(0,0,0,0.4); }
.auth-card h2 { margin: 0 0 16px; font-size: 18px; }
label { display: block; margin-bottom: 12px; font-size: 13px; color: var(--muted); }
input, select { display: block; width: 100%; margin-top: 4px; padding: 10px 12px; background: #0b1220; color: var(--text); border: 1px solid #223049; border-radius: 8px; font: inherit; }
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button { width: 100%; padding: 10px 12px; margin-top: 4px; background: var(--accent); color: #001428; border: 0; border-radius: 8px; font-weight: 600; cursor: pointer; }
button:hover { filter: brightness(1.05); }
.status { margin: 12px 0 0; color: var(--muted); font-size: 12px; }

.app-shell { display: flex; height: 100vh; overflow: hidden; }
.sidebar { width: 250px; background: var(--panel); border-right: 1px solid #223049; display: flex; flex-direction: column; padding: 16px 0; }
.sidebar h2 { font-size: 16px; margin: 0 16px 24px; color: var(--accent); }
.sidebar nav { display: flex; flex-direction: column; flex-grow: 1; }
.nav-link { padding: 10px 16px; color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 500; cursor: pointer; }
.nav-link:hover { background: #1a253a; color: var(--text); }
.nav-link.active { background: #1a253a; color: var(--accent); border-left: 3px solid var(--accent); }
.sidebar-footer { padding: 16px; }
.sidebar-footer button { background: transparent; color: var(--text); border: 1px solid #223049; }
.sidebar-footer button:hover { background: #1a253a; }
.content { flex-grow: 1; display: flex; flex-direction: column; overflow-y: auto; padding: 24px; }

.tab-pane { display: none; }
.tab-pane.active { display: block; }
.tab-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; text-align: left; }
.tab-header h2 { margin: 0; font-size: 20px; }
.tab-header .actions { display: flex; gap: 8px; }
.tab-header .actions button { width: auto; padding: 8px 16px; margin: 0; background: transparent; color: var(--text); border: 1px solid #223049; }
.tab-header .actions button.primary { background: var(--accent); color: #001428; border: 0; }

.grid-viewer { background: var(--panel); border: 1px solid #223049; border-radius: 8px; overflow: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th, .data-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid #223049; }
.data-table th { background: #162032; color: var(--muted); font-weight: 600; position: sticky; top: 0; }
.data-table tbody tr:hover { background: #1a253a; }
.data-table .row-actions button { width: auto; padding: 4px 10px; margin: 0 4px 0 0; font-size: 12px; background: transparent; color: var(--text); border: 1px solid #223049; }
.data-table .row-actions button.danger { color: var(--danger); border-color: var(--danger); }

.ads-filters { display: flex; gap: 12px; margin-bottom: 16px; }
.ads-filters input { width: 200px; margin: 0; }
.ads-filters button { width: auto; margin: 0; }
.ads-viewer { background: var(--panel); border: 1px solid #223049; border-radius: 8px; overflow: auto; }
.ads-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.ads-table th, .ads-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid #223049; }
.ads-table th { background: #162032; color: var(--muted); font-weight: 600; position: sticky; top: 0; }
.ads-table tbody tr:hover { background: #1a253a; }
.ads-table pre { margin: 0; white-space: pre-wrap; word-wrap: break-word; max-width: 400px; font-family: monospace; font-size: 12px; color: #a3b8cc; }

.map-container { height: 420px; width: 100%; border-radius: 8px; border: 1px solid #223049; }
.leaflet-container { background: #142033 !important; }
.leaflet-popup-content-wrapper { background: var(--panel); color: var(--text); border-radius: 6px; }
.leaflet-popup-tip { background: var(--panel); }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.card { background: var(--panel); border: 1px solid #223049; border-radius: 8px; padding: 20px; }
.card h3 { margin: 0 0 12px; font-size: 15px; color: var(--muted); }
.card dl { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 6px 12px; font-size: 13px; }
.card dl dt { color: var(--muted); }
.card dl dd { margin: 0; font-family: monospace; }
.model-swap-form { display: flex; gap: 8px; align-items: end; }
.model-swap-form select { flex: 1; margin: 0; }
.model-swap-form button { width: auto; margin: 0; padding: 10px 16px; }

.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.55); display: grid; place-items: center; z-index: 100; }
.modal { background: var(--panel); border: 1px solid #223049; border-radius: 12px; padding: 24px; width: min(420px, 90%); box-shadow: 0 12px 40px rgba(0,0,0,0.6); }
.modal h3 { margin: 0 0 16px; font-size: 17px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.modal-actions button { width: auto; padding: 8px 16px; background: transparent; color: var(--text); border: 1px solid #223049; }
.modal-actions button.primary { background: var(--accent); color: #001428; border: 0; }

.pill { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.pill.ok { background: rgba(74, 222, 128, 0.15); color: var(--success); }
.pill.warn { background: rgba(251, 191, 36, 0.15); color: var(--warn); }
.pill.err { background: rgba(248, 113, 113, 0.15); color: var(--danger); }
.pill.info { background: rgba(74, 168, 255, 0.15); color: var(--accent); }

.gate-overlay { position: fixed; inset: 0; background: rgba(11, 18, 32, 0.92); display: flex; align-items: center; justify-content: center; z-index: 9999; backdrop-filter: blur(4px); }
.gate-overlay__box { background: var(--panel); border: 1px solid #ff4444; border-radius: 12px; padding: 32px 40px; max-width: 420px; text-align: center; }
.gate-overlay__box h3 { margin: 0 0 12px; color: #ff6666; font-size: 18px; }
.gate-overlay__box p { color: var(--muted); font-size: 14px; margin: 0 0 20px; }
.gate-overlay__box button { width: auto; padding: 8px 24px; background: #ff4444; color: #fff; border: none; }