:root {
  color-scheme: light;
  --surface-1: #fcfcfb;
  --surface-page: #f9f9f7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --gridline: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);

  --series-cpu: #2a78d6;   /* categorical slot 1 blue */
  --series-mem: #eb6834;   /* categorical slot 2 orange */
  --series-disk: #1baf7a;  /* categorical slot 3 aqua */

  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-serious: #ec835a;
  --status-critical: #d03b3b;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --surface-1: #1a1a19;
    --surface-page: #0d0d0d;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --gridline: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255, 255, 255, 0.10);

    --series-cpu: #3987e5;
    --series-mem: #d95926;
    --series-disk: #199e70;

    --status-good: #0ca30c;
    --status-warning: #fab219;
    --status-serious: #ec835a;
    --status-critical: #d03b3b;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --surface-1: #1a1a19;
  --surface-page: #0d0d0d;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --gridline: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255, 255, 255, 0.10);

  --series-cpu: #3987e5;
  --series-mem: #d95926;
  --series-disk: #199e70;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--surface-page);
  color: var(--text-primary);
  -webkit-text-size-adjust: 100%;
}

/* ---------- Login page ---------- */
.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.login-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 24px;
  width: 100%;
  max-width: 360px;
  text-align: center;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.login-icon { font-size: 40px; margin-bottom: 8px; }
.login-card h1 { font-size: 22px; margin: 0 0 4px; }
.login-sub { color: var(--text-secondary); font-size: 14px; margin: 0 0 24px; }
.login-card form { display: flex; flex-direction: column; text-align: left; }
.login-card label { font-size: 13px; color: var(--text-secondary); margin: 12px 0 4px; }
.login-card input {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  background: var(--surface-page);
  color: var(--text-primary);
  width: 100%;
  max-width: 100%;
}
.login-card button {
  margin-top: 20px;
  padding: 11px;
  border: none;
  border-radius: 8px;
  background: var(--series-cpu);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}
.login-card button:disabled { opacity: 0.6; cursor: default; }
.login-error {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--status-critical) 12%, var(--surface-1));
  color: var(--status-critical);
  font-size: 13px;
}

/* ---------- Dashboard layout ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--surface-1);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
  gap: 8px;
}
.topbar-title { font-size: 17px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.topbar-right { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-secondary); }
.last-updated { white-space: nowrap; }
.conn-status { font-size: 10px; }
.conn-ok { color: var(--status-good); }
.conn-bad { color: var(--status-critical); }
.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
}

.dashboard {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 16px 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Stat tiles: flex-wrap, never a fixed-track grid, per Center-Safe Mobile rule */
.stat-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.stat-tile {
  flex: 1 1 220px;
  min-width: 0;
  max-width: 100%;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.stat-label { font-size: 13px; color: var(--text-secondary); }
.stat-value { font-size: 32px; font-weight: 600; margin: 4px 0 10px; font-variant-numeric: proportional-nums; }
.stat-value-small { font-size: 22px; }
.stat-sub { font-size: 12px; color: var(--text-muted); margin-top: 8px; }

.meter {
  height: 8px;
  border-radius: 4px;
  background: var(--gridline);
  overflow: hidden;
}
.meter-fill {
  height: 100%;
  width: 0%;
  border-radius: 4px;
  background: var(--status-good);
  transition: width 0.4s ease, background-color 0.4s ease;
}

.panel {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  min-width: 0;
  max-width: 100%;
}
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}
.panel-header h2 { font-size: 16px; margin: 0; }
.panel-sub { font-size: 13px; color: var(--text-secondary); }

.range-select { display: flex; gap: 6px; }
.range-btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
}
.range-btn.active { background: var(--series-cpu); color: #fff; border-color: var(--series-cpu); }

.chart-legend { display: flex; gap: 16px; margin-bottom: 8px; flex-wrap: wrap; }
.legend-item { font-size: 12px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot-cpu { background: var(--series-cpu); }
.dot-mem { background: var(--series-mem); }
.dot-disk { background: var(--series-disk); }

.chart-wrap { position: relative; width: 100%; max-width: 100%; }
#historyChart { width: 100%; height: 220px; display: block; }
.chart-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  white-space: nowrap;
  transform: translate(-50%, -110%);
  z-index: 5;
}
.chart-tooltip .tt-row { display: flex; align-items: center; gap: 6px; }
.chart-tooltip .tt-time { color: var(--text-muted); margin-bottom: 4px; }

.banner {
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 12px;
}
.banner-warning {
  background: color-mix(in srgb, var(--status-warning) 15%, var(--surface-1));
  color: var(--text-primary);
  border: 1px solid color-mix(in srgb, var(--status-warning) 40%, transparent);
}

.table-wrap { width: 100%; max-width: 100%; overflow-x: auto; }
.container-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 560px; }
.container-table th {
  text-align: left;
  color: var(--text-muted);
  font-weight: 500;
  padding: 8px 10px;
  border-bottom: 1px solid var(--gridline);
  white-space: nowrap;
}
.container-table td {
  padding: 10px;
  border-bottom: 1px solid var(--gridline);
  vertical-align: middle;
}
.container-table td.num { font-variant-numeric: tabular-nums; }
.table-empty { text-align: center; color: var(--text-muted); padding: 24px !important; }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
}
.status-pill::before { content: ''; width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.status-running { background: color-mix(in srgb, var(--status-good) 15%, var(--surface-1)); color: var(--status-good); }
.status-running::before { background: var(--status-good); }
.status-stopped { background: color-mix(in srgb, var(--text-muted) 18%, var(--surface-1)); color: var(--text-secondary); }
.status-stopped::before { background: var(--text-muted); }
.status-peak { background: color-mix(in srgb, var(--status-critical) 15%, var(--surface-1)); color: var(--status-critical); }
.status-peak::before { background: var(--status-critical); }

.container-name { font-weight: 600; }
.container-image { color: var(--text-muted); font-size: 12px; }

/* Mobile: stack table info more compactly, keep no horizontal page scroll */
@media (max-width: 480px) {
  .stat-value { font-size: 26px; }
  .dashboard { padding: 16px 12px 32px; }
}