/* Public login asset: visual primitives only; no research, source, or runtime data. */
:root {
  --font-mono: "JetBrains Mono", "SF Mono", "Consolas", "Liberation Mono", Menlo, monospace;
  --bg-app: #080b0f;
  --bg-surface: #0f141c;
  --bg-card: #151c27;
  --bg-card-hover: #1c2534;
  --border-dim: #1f2a38;
  --border-subtle: #273547;
  --border-active: #3b82f6;
  --border-focus: #ff9900;
  --text-primary: #e6edf3;
  --text-secondary: #94a3b8;
  --text-dim: #64748b;
  --text-amber: #ff9900;
  --text-red: #f87171;
  --badge-offline: #334155;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.45;
  min-height: 100vh;
}
a { color: #38bdf8; }
:focus-visible { outline: 2px solid var(--border-focus); outline-offset: 1px; }
.login-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: radial-gradient(circle at center, #101723 0%, #06090e 100%);
}
.login-box {
  width: 100%;
  max-width: 420px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(0,0,0,.6);
}
.card-header { padding: 12px 16px; border-bottom: 1px solid var(--border-dim); display: flex; justify-content: space-between; gap: 10px; }
.card-title { font-weight: 700; }
.card-body { padding: 20px; }
.badge { display: inline-block; padding: 2px 6px; border-radius: 2px; font-size: 10px; font-weight: 700; }
.badge-amber { color: var(--text-amber); border: 1px solid var(--text-amber); background: rgba(255,153,0,.15); }
.alert-banner { display: flex; gap: 12px; padding: 12px 16px; border: 1px solid var(--text-amber); }
.alert-amber { background: rgba(255,153,0,.08); }
.alert-title { font-weight: 700; margin-bottom: 4px; }
.metric-label { color: var(--text-dim); font-size: 11px; font-weight: 700; letter-spacing: .04em; }
.input-control {
  background: #0b0f15;
  color: var(--text-primary);
  border: 1px solid var(--border-dim);
  border-radius: 3px;
  padding: 8px;
  font-family: inherit;
}
.btn { color: var(--text-primary); background: var(--bg-card); border: 1px solid var(--border-dim); border-radius: 3px; cursor: pointer; padding: 8px 10px; font-family: inherit; }
.btn-primary { color: #061018; background: #38bdf8; border-color: #38bdf8; }
.btn:disabled { cursor: not-allowed; opacity: .55; }
.keypad-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 14px; }
.keypad-btn { background: var(--bg-card); border: 1px solid var(--border-dim); color: var(--text-primary); padding: 12px; font-size: 16px; font-family: var(--font-mono); font-weight: 600; border-radius: 4px; cursor: pointer; }
.keypad-btn:hover { background: var(--bg-card-hover); border-color: var(--border-active); }
.keypad-btn:active { transform: scale(.97); }