:root {
  color-scheme: dark;
  --bg: #0d1117;
  --panel: #151b23;
  --panel-2: #1b232e;
  --line: #2b3542;
  --text: #edf2f7;
  --muted: #94a3b8;
  --blue: #5b8def;
  --green: #62c48c;
  --red: #e66d75;
  --amber: #d6a85c;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, input {
  font: inherit;
}

.hidden { display: none !important; }

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at top left, #192436, transparent 34%), var(--bg);
}

.login-panel {
  width: min(420px, calc(100vw - 32px));
  padding: 28px;
  border: 1px solid var(--line);
  background: #121821;
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(0,0,0,.35);
}

.brand-mark, .brand span {
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  border-radius: 6px;
  background: #20324a;
  color: #dbeafe;
  font-weight: 800;
}

.login-panel h1 { margin: 18px 0 4px; font-size: 28px; letter-spacing: 0; }
.login-panel p { margin: 0 0 22px; color: var(--muted); }
.login-panel label { display: grid; gap: 6px; margin: 14px 0; color: var(--muted); }
input {
  width: 100%;
  border: 1px solid var(--line);
  background: #0e141c;
  color: var(--text);
  padding: 11px 12px;
  border-radius: 6px;
}
button {
  border: 1px solid var(--line);
  background: #1d2836;
  color: var(--text);
  padding: 9px 12px;
  border-radius: 6px;
  cursor: pointer;
}
button:hover { border-color: #405068; }
.login-panel button { width: 100%; margin-top: 8px; background: var(--blue); color: #06101f; font-weight: 700; }
.error { color: var(--red); display: block; min-height: 20px; margin-top: 12px; }

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px 1fr;
}

.sidebar {
  border-right: 1px solid var(--line);
  background: #0b1017;
  padding: 18px 14px;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 0 6px 18px; }
.brand strong { font-size: 16px; }
nav { display: grid; gap: 3px; }
nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 6px;
  cursor: pointer;
}
nav a.active, nav a:hover { color: var(--text); background: #151d27; }

main { min-width: 0; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(7, minmax(110px, 1fr));
  gap: 1px;
  border-bottom: 1px solid var(--line);
  background: var(--line);
}
.topbar div {
  padding: 12px 14px;
  background: #111821;
}
.topbar span, .panel-head span, td { color: var(--muted); }
.topbar strong { display: block; margin-top: 2px; font-size: 15px; }

.command-strip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.danger { background: #47242a; color: #ffd9dd; border-color: #79404a; }
.danger-outline { background: transparent; color: #ffb3ba; border-color: #79404a; }
#control-status { color: var(--muted); margin-left: auto; }

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(360px, .9fr);
  gap: 14px;
  padding: 18px;
}
.page {
  padding: 18px;
  display: grid;
  gap: 14px;
}
.page-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  padding: 2px 2px 4px;
}
.page-head h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0;
}
.page-head span {
  color: var(--muted);
}
.panel {
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  overflow: hidden;
}
.panel.wide, .risk-center { grid-column: span 1; }
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  background: #121922;
}
.panel h2 { margin: 0; font-size: 15px; letter-spacing: 0; }

.regime-grid, .settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}
.regime-grid div, .settings-grid label {
  padding: 12px;
  background: var(--panel);
}
.regime-grid span, .settings-grid span { display: block; color: var(--muted); margin-bottom: 4px; }

.heatmap { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; padding: 14px; }
.heatmap button { background: #182334; text-align: left; min-height: 44px; }
.heatmap.large { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.heatmap.large button { min-height: 72px; }

table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}
th, td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
th {
  color: #cbd5e1;
  font-size: 12px;
  text-transform: uppercase;
  background: #111821;
}
td strong { color: var(--text); }
td button {
  padding: 6px 9px;
  font-size: 12px;
}
.score { color: var(--green); font-weight: 700; }
.settings-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.settings-grid input { margin-top: 6px; }

@media (max-width: 1100px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .topbar { grid-template-columns: repeat(2, 1fr); }
  .grid { grid-template-columns: 1fr; }
  .heatmap.large { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-head { display: block; }
}