:root {
  --color-bg-primary: #0b0f14;
  --color-bg-secondary: #121821;
  --color-bg-tertiary: #1a2230;
  --color-canvas: #0e131a;
  --color-border: #263142;
  --color-border-light: #334055;
  --color-text-primary: #ffffff;
  --color-text-secondary: #a7b3c4;
  --color-text-muted: #738096;
  --color-accent: #2dd4bf;
  --color-accent-hover: #14b8a6;
  --color-accent-contrast: #04201c;
  --color-success: #34d399;
  --color-success-bg: rgba(52,211,153,0.14);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245,158,11,0.14);
  --color-danger: #f87171;
  --color-danger-bg: rgba(248,113,113,0.14);

  --color-text-hi:   rgba(255,255,255,0.92);
  --color-text-med:  rgba(255,255,255,0.68);
  --color-text-lo:   rgba(255,255,255,0.45);
  --color-text-xlo:  rgba(255,255,255,0.2);

  --color-surface-hover:  rgba(255,255,255,0.06);
  --color-surface-tint:   rgba(255,255,255,0.03);
  --color-surface-subtle: rgba(255,255,255,0.08);

  --color-modal-bg:      #151c27;
  --color-modal-border:  rgba(255,255,255,0.12);
  --color-backdrop:      rgba(0,0,0,0.6);

  --color-row-active-bg:    rgba(45,212,191,0.12);
  --color-row-active-border: rgba(45,212,191,0.45);
  --color-row-hover-bg:     rgba(45,212,191,0.05);
  --color-logo-text: #ffffff;
  --color-btn-ghost-bg: transparent;
  --color-btn-ghost-bg-hover: #1f2836;
  --color-btn-ghost-border: #334055;
  --color-btn-ghost-border-hover: #4a5a72;
  --color-btn-ghost-text: #a7b3c4;
  --color-btn-ghost-text-hover: #ffffff;
  --color-btn-action-bg: #1f2836;
  --color-btn-action-border: #263142;
  --color-btn-action-bg-hover: #253042;
  --color-input-bg: #1a2230;
  --color-input-border: #334055;
  --color-input-text: #ffffff;
  --color-card-bg: #151c27;
  --color-card-border: #2b3749;
  --color-overlay-bg: rgba(0, 0, 0, 0.7);

  --viz-cat-1: #3987e5;
  --viz-cat-2: #d95926;
  --viz-cat-3: #199e70;
  --viz-cat-4: #c98500;
  --viz-cat-5: #d55181;
  --viz-cat-6: #008300;
  --viz-other: rgba(255,255,255,0.28);

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius-card: 8px;
  --radius-btn: 6px;
  --radius-chip: 4px;

  color-scheme: dark;
  font-family: var(--font-body);
  line-height: 1.5;
  font-weight: 400;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

:root[data-theme="light"] {
  --color-bg-primary: #e8edf1;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #e0e6ec;
  --color-canvas: #eef2f5;
  --color-border: #d3dae2;
  --color-border-light: #bfc9d3;
  --color-text-primary: #18212b;
  --color-text-secondary: #47515e;
  --color-text-muted: #5a6573;
  --color-accent: #0d6b64;
  --color-accent-hover: #115e59;
  --color-accent-contrast: #ffffff;
  --color-success: #116a2f;
  --color-success-bg: rgba(17,106,47,0.1);
  --color-warning: #8a4b00;
  --color-warning-bg: rgba(138,75,0,0.1);
  --color-danger: #b01e1b;
  --color-danger-bg: rgba(176,30,27,0.1);

  --color-text-hi:   #18212b;
  --color-text-med:  #47515e;
  --color-text-lo:   #5a6573;
  --color-text-xlo:  #a3adb8;

  --color-surface-hover:  #e8edf2;
  --color-surface-tint:   #f2f5f8;
  --color-surface-subtle: #e0e6ec;

  --color-row-active-bg:    #dcefed;
  --color-row-active-border: #0d6b64;
  --color-row-hover-bg:     #edf5f4;

  --color-modal-bg:     #ffffff;
  --color-modal-border: #c6cfd9;
  --color-backdrop:     rgba(0,0,0,0.45);

  --viz-cat-1: #2a78d6;
  --viz-cat-2: #eb6834;
  --viz-cat-3: #1baf7a;
  --viz-cat-4: #eda100;
  --viz-cat-5: #e87ba4;
  --viz-cat-6: #008300;
  --viz-other: rgba(32,33,36,0.24);

  --color-logo-text: #18212b;
  --color-btn-ghost-bg: transparent;
  --color-btn-ghost-bg-hover: #e8edf2;
  --color-btn-ghost-border: #bfc9d3;
  --color-btn-ghost-border-hover: #8f9aa7;
  --color-btn-ghost-text: #47515e;
  --color-btn-ghost-text-hover: #18212b;
  --color-btn-action-bg: #f2f5f8;
  --color-btn-action-border: #c6cfd9;
  --color-btn-action-bg-hover: #e8edf2;
  --color-input-bg: #ffffff;
  --color-input-border: #bfc9d3;
  --color-input-text: #18212b;
  --color-card-bg: #ffffff;
  --color-card-border: #c6cfd9;
  --color-overlay-bg: rgba(0, 0, 0, 0.4);

  color-scheme: light;
}

html, body {
  font-family: var(--font-body);
  line-height: inherit;
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-accent-hover);
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
}

code, .mono {
  font-family: var(--font-mono);
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.muted {
  color: var(--color-text-lo);
}

.chip {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-chip);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--color-row-active-bg);
  border: 1px solid var(--color-row-active-border);
  color: var(--color-accent);
  white-space: nowrap;
}

.chip.neutral {
  background: var(--color-surface-subtle);
  border-color: var(--color-border);
  color: var(--color-text-med);
}

.chip.success {
  background: var(--color-success-bg);
  border-color: var(--color-success);
  color: var(--color-success);
}

.chip.warning {
  background: var(--color-warning-bg);
  border-color: var(--color-warning);
  color: var(--color-warning);
}

.chip.danger {
  background: var(--color-danger-bg);
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.status-dot {
  display: inline-flex;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-text-lo);
  flex-shrink: 0;
}

.status-dot.success { background: var(--color-success); }
.status-dot.warning { background: var(--color-warning); }
.status-dot.danger { background: var(--color-danger); }
.status-dot.live { animation: pulse-dot 1.6s ease-in-out infinite; }

@keyframes pulse-dot {
  50% { opacity: 0.35; }
}

.status-line {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  white-space: nowrap;
}

.status-line.success { color: var(--color-success); }
.status-line.warning { color: var(--color-warning); }
.status-line.danger { color: var(--color-danger); }

.callout-warning {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-card);
  padding: 0.75rem 1rem;
  box-sizing: border-box;
}

.callout-warning .callout-header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-warning);
}

.spinner-inline {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin-inline 0.7s linear infinite;
}

@keyframes spin-inline {
  to { transform: rotate(360deg); }
}

.icon-btn {
  background: none;
  border: none;
  color: var(--color-text-lo);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.icon-btn:hover {
  color: var(--color-text-med);
  background: var(--color-surface-subtle);
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-btn);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
  box-sizing: border-box;
}

.btn-primary {
  border: 1px solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

a.btn-primary,
a.btn-primary:hover {
  color: var(--color-accent-contrast);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-secondary {
  border: 1px solid var(--color-border-light);
  background: var(--color-surface-tint);
  color: var(--color-text-hi);
}

a.btn-secondary,
a.btn-secondary:hover {
  color: var(--color-text-hi);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-surface-hover);
}

.mock-action {
  position: relative;
  border-style: dashed;
  border-color: var(--color-border-light);
  background: transparent;
  color: var(--color-text-med);
}

.code-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface-tint);
  overflow: hidden;
  min-width: 0;
}

.code-block .code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.4rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-lo);
}

.code-block pre {
  margin: 0;
  padding: 0.75rem 1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--color-text-primary);
}

.section-title {
  margin: 0 0 10px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-med);
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-card);
  padding: 12px;
  box-sizing: border-box;
  min-width: 0;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.data-table thead {
  display: none;
}

.data-table tr {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 4px 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

.data-table td {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
  overflow-wrap: anywhere;
}

.data-table td::before {
  content: attr(data-label);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-lo);
}

.data-table td.wide {
  grid-column: 1 / -1;
}

.data-table .right {
  text-align: left;
}

.page {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  min-width: 0;
}

@media (min-width: 641px) {
  .data-table thead {
    display: table-header-group;
  }

  .data-table tr {
    display: table-row;
    padding: 0;
  }

  .data-table td,
  .data-table th {
    display: table-cell;
    padding: 7px 10px;
    border-bottom: 1px solid var(--color-border);
    text-align: left;
    white-space: nowrap;
    vertical-align: middle;
  }

  .data-table th {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-lo);
    background: var(--color-surface-tint);
  }

  .data-table td::before {
    content: none;
  }

  .data-table tbody tr:hover {
    background: var(--color-row-hover-bg);
  }

  .data-table .right {
    text-align: right;
  }

  .panel {
    padding: 16px;
  }

  .page {
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .stat-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}