:root {
  --bg: #0b0f17;
  --panel: #121826;
  --panel-2: #172033;
  --text: #e7edf7;
  --muted: #9fb0c7;
  --line: #26324a;
  --accent: #4d8dff;
  --danger: #d85b6a;
  --ok: #3bb273;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--text); text-decoration: none; }
.topbar { position: sticky; top: 0; z-index: 20; display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; background: rgba(11,15,23,.92); border-bottom: 1px solid var(--line); backdrop-filter: blur(8px); }
.brand { font-weight: 700; }
.nav { display: flex; gap: 12px; flex-wrap: wrap; }
.nav a { color: var(--muted); }
.nav a:hover { color: var(--text); }
.container { max-width: 1240px; margin: 0 auto; padding: 16px; }
.grid { display: grid; gap: 16px; }
.cards-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.two-col { grid-template-columns: 1.35fr .95fr; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 16px; box-shadow: 0 12px 30px rgba(0,0,0,.18); }
.card.subtle { background: var(--panel-2); }
.card.narrow { max-width: 720px; }
.stat-card .label { color: var(--muted); font-size: 14px; }
.stat-card .value { font-size: 32px; font-weight: 700; margin-top: 8px; }
.section-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
h1, h2 { margin: 0 0 10px; font-size: 20px; }
.kv-grid { display: grid; gap: 12px; grid-template-columns: repeat(2, minmax(0,1fr)); }
.kv-grid div { background: var(--panel-2); border-radius: 14px; padding: 12px; }
.kv-grid span { color: var(--muted); display: block; margin-bottom: 4px; font-size: 13px; }
.btn { border: 1px solid var(--line); background: var(--panel-2); color: var(--text); border-radius: 12px; padding: 10px 14px; cursor: pointer; }
.btn:hover { border-color: var(--accent); }
.btn.small { padding: 7px 10px; font-size: 13px; }
.btn.danger { border-color: rgba(216,91,106,.3); color: #ffd7dc; }
.btn.active { border-color: var(--accent); }
.range-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 12px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--muted); cursor: pointer; white-space: nowrap; }
pre.stats-box { white-space: pre-wrap; word-break: break-word; font-size: 13px; color: #c8d4e7; background: #0d1320; border-radius: 14px; padding: 12px; min-height: 180px; }
.flash-wrap { display: grid; gap: 8px; margin-bottom: 16px; }
.flash { padding: 12px 14px; border-radius: 12px; }
.flash.success { background: rgba(59,178,115,.12); border: 1px solid rgba(59,178,115,.28); }
.flash.error { background: rgba(216,91,106,.12); border: 1px solid rgba(216,91,106,.28); }
.stack { display: grid; gap: 12px; }
.stack.compact { margin-top: 10px; }
label { display: grid; gap: 6px; color: var(--muted); font-size: 14px; }
input, textarea { width: 100%; background: #0d1320; border: 1px solid var(--line); color: var(--text); border-radius: 12px; padding: 10px 12px; }
.actions-cell { display: flex; gap: 8px; flex-wrap: wrap; }
.actions-inline { display: flex; gap: 8px; flex-wrap: wrap; }
.user-form-grid { display: grid; gap: 12px; grid-template-columns: 1fr 1fr 1fr auto; margin-bottom: 16px; }
summary { list-style: none; }
summary::-webkit-details-marker { display: none; }
@media (max-width: 980px) {
  .cards-grid, .two-col, .kv-grid, .user-form-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .topbar { align-items: flex-start; flex-direction: column; gap: 10px; }
  .cards-grid, .two-col, .kv-grid, .user-form-grid { grid-template-columns: 1fr; }
  .container { padding: 12px; }
  .card { padding: 14px; border-radius: 16px; }
  .stat-card .value { font-size: 28px; }
  table { min-width: 620px; }
}