html,
body {
  height: 100%;
}

*,
*::before,
*::after {
  transition: none;
}

body {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--ink);
  background: var(--surface);
  min-height: 100vh;
}

h1 {
  margin: 0;
  font-size: var(--h1-size);
  font-weight: var(--h1-weight);
  text-transform: uppercase;
  letter-spacing: var(--h1-tracking);
  line-height: 1.2;
}

h2,
h3 {
  margin: 0;
  font-size: var(--h2-size);
  font-weight: var(--h2-weight);
  line-height: 1.25;
}

.label,
label > span,
.meta {
  font-size: var(--label-size);
  text-transform: uppercase;
  letter-spacing: var(--label-tracking);
  color: var(--muted);
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color 120ms linear;
}

a:hover {
  text-decoration-thickness: 2px;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  min-height: 36px;
  padding: 10px 12px;
  border-radius: var(--radius);
  border: var(--border-width) solid var(--control-border);
  background: var(--control-bg);
  color: var(--control-ink);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 120ms linear, background-color 120ms linear, border-color 120ms linear;
}

button:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

button:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

input[type="search"],
input[type="text"],
input[type="email"],
input[type="url"],
select,
textarea {
  height: 34px;
  padding: 8px 10px;
  border-radius: var(--radius);
  border: var(--border-width) solid var(--border);
  background: var(--surface);
  color: var(--ink);
  transition: color 120ms linear, background-color 120ms linear, border-color 120ms linear;
}

textarea {
  min-height: 80px;
  height: auto;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

input::placeholder,
textarea::placeholder {
  color: var(--muted);
}

input[type="checkbox"] {
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: var(--radius);
  border: var(--border-width) solid var(--border);
  background: transparent;
  display: inline-grid;
  place-content: center;
  vertical-align: middle;
}

input[type="checkbox"]::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--ink);
  transform: scale(0);
}

input[type="checkbox"]:checked::before {
  transform: scale(1);
}

.panel {
  border: var(--border-width) solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2, var(--surface));
}

.surface-1 {
  background: var(--surface);
}

.surface-2 {
  background: var(--surface-2, var(--surface));
}

.surface-3 {
  background: var(--surface-3, var(--surface-2, var(--surface)));
}

.is-active,
[aria-current="page"],
[aria-selected="true"],
button[aria-pressed="true"] {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  border-color: currentColor;
}

button:disabled,
input:disabled,
select:disabled,
textarea:disabled,
[aria-disabled="true"] {
  color: var(--muted);
  border-color: var(--border);
  background: var(--surface-2, var(--surface));
  cursor: not-allowed;
}

.divider {
  height: 1px;
  background: var(--border);
}

/* Minimal legend (required for data palettes) */
.legend {
  display: grid;
  gap: var(--space-2);
}

.legend-title {
  font-size: var(--label-size);
  text-transform: uppercase;
  letter-spacing: var(--label-tracking);
  color: var(--muted);
}

.legend-scale {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 0;
  border: var(--border-width) solid var(--border);
}

.legend-swatch {
  height: 10px;
}

.chart-axis,
.chart-domain {
  stroke: var(--border);
  fill: none;
}

.chart-grid,
.chart-tick line {
  stroke: var(--muted);
  fill: none;
}