/* Holiday API — neutral placeholder design (NF-09).
 *
 * One accent, a system font stack, light and dark from the same tokens. A later redesign
 * replaces the :root tokens, not the structure. Colour values live here once and nowhere else.
 */

:root {
  color-scheme: light dark;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --color-bg: #f6f7f9;
  --color-surface: #ffffff;
  --color-text: #1c2430;
  --color-muted: #5b6573;
  --color-border: #d9dee5;
  --color-accent: #b3261e;
  --color-accent-contrast: #ffffff;
  --color-danger: #a23b3b;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;

  --radius: 6px;
  --tap-target: 44px;
  --content-max: 56rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #14181e;
    --color-surface: #1c222b;
    --color-text: #e6eaf0;
    --color-muted: #9aa5b4;
    --color-border: #2c3542;
    --color-accent: #f08a80;
    --color-accent-contrast: #14181e;
    --color-danger: #e08080;
  }
}

* {
  box-sizing: border-box;
}

html {
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  color: var(--color-text);
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.site-header,
.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3);
  max-width: var(--content-max);
  width: 100%;
  margin: 0 auto;
}

.site-header nav {
  display: flex;
  gap: var(--space-3);
}

.site-header a,
.year-nav a {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-target);
}

.brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--color-text);
}

.site-footer {
  margin-top: auto;
  color: var(--color-muted);
  font-size: 0.875rem;
}

.content {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
}

h1 {
  margin-top: 0;
  font-size: 1.5rem;
}

h2 {
  font-size: 1.2rem;
}

h3 {
  font-size: 1rem;
  margin-bottom: var(--space-1);
}

.picker {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

@media (min-width: 40rem) {
  .picker {
    grid-template-columns: auto 1fr auto 8rem auto;
    align-items: center;
  }
}

select,
input,
button {
  font: inherit;
  min-height: var(--tap-target);
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
}

button {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  border-color: var(--color-accent);
  cursor: pointer;
  padding: var(--space-1) var(--space-4);
}

.year-nav {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.holidays {
  width: 100%;
  border-collapse: collapse;
}

.holidays th,
.holidays td {
  text-align: left;
  padding: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.tag {
  display: inline-block;
  margin-left: var(--space-1);
  padding: 0 var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* Narrow screens: rows become cards instead of columns (NF-09). */
@media (max-width: 39.99rem) {
  .holidays thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }

  .holidays tr {
    display: block;
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .holidays td {
    display: flex;
    justify-content: space-between;
    gap: var(--space-3);
    border: 0;
    padding: var(--space-1) 0;
  }

  .holidays td::before {
    content: attr(data-label);
    color: var(--color-muted);
  }
}

.calendar-link {
  overflow-wrap: anywhere;
  font-family: var(--font-mono);
}

.hint {
  color: var(--color-muted);
}

.notice {
  padding: var(--space-3);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.notice-error {
  border-color: var(--color-danger);
  color: var(--color-danger);
}

pre {
  overflow-x: auto;
  padding: var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.version {
  font-family: var(--font-mono);
  font-size: 0.75rem;
}