/* ==========================================================================
   Exactaclock — design tokens, base elements and page layout
   ========================================================================== */

:root {
  color-scheme: light dark;

  --font-sans:
    ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;

  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;
  --radius-pill: 999px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);

  /* Palette — light. One accent: the sun. Everything else is neutral. */
  --bg: oklch(98.4% 0.004 85);
  --surface: oklch(100% 0 0);
  --surface-glass: oklch(100% 0 0 / 0.86);
  --line: oklch(91.5% 0.005 85);
  --line-strong: oklch(84% 0.006 85);

  --text: oklch(22% 0.006 285);
  --text-muted: oklch(50% 0.012 285);
  --text-faint: oklch(60% 0.01 285);

  --sun: oklch(77% 0.17 68);
  --sun-text: oklch(55% 0.16 50);
  --sun-soft: oklch(77% 0.17 68 / 0.16);
  --glow: oklch(93% 0.06 80 / 0.7);
  --live: oklch(63% 0.17 150);
  --live-ring: oklch(63% 0.17 150 / 0.45);
  --danger: oklch(53% 0.2 27);
  --danger-soft: oklch(53% 0.2 27 / 0.08);

  --tile-filter: saturate(0.3) brightness(1.04) contrast(0.92);

  --shadow-sm: 0 1px 2px oklch(20% 0.01 285 / 0.05);
  --shadow-md:
    0 4px 14px oklch(20% 0.01 285 / 0.1), 0 1px 3px oklch(20% 0.01 285 / 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: oklch(15.5% 0.004 285);
    --surface: oklch(20% 0.005 285);
    --surface-glass: oklch(20% 0.005 285 / 0.86);
    --line: oklch(27% 0.006 285);
    --line-strong: oklch(36% 0.008 285);

    --text: oklch(96.5% 0.003 285);
    --text-muted: oklch(72% 0.012 285);
    --text-faint: oklch(56% 0.01 285);

    --sun: oklch(80% 0.16 72);
    --sun-text: oklch(84% 0.15 78);
    --sun-soft: oklch(80% 0.16 72 / 0.16);
    --glow: oklch(40% 0.08 65 / 0.35);
    --live: oklch(77% 0.17 150);
    --live-ring: oklch(77% 0.17 150 / 0.4);
    --danger: oklch(73% 0.16 25);
    --danger-soft: oklch(73% 0.16 25 / 0.12);

    --tile-filter: invert(1) hue-rotate(180deg) saturate(0.3) brightness(0.85)
      contrast(0.9);

    --shadow-sm: 0 1px 2px oklch(0% 0 0 / 0.3);
    --shadow-md: 0 6px 20px oklch(0% 0 0 / 0.45);
  }
}

/* ==========================================================================
   Base
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-height: 100dvh;
  font-family: var(--font-sans);
  line-height: 1.5;
  color: var(--text);
  background:
    radial-gradient(44rem 30rem at -8% -12%, var(--glow), transparent 70%),
    var(--bg);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
  color: inherit;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

:focus-visible {
  outline: 2px solid var(--sun);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

.icon {
  width: 1em;
  height: 1em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.num {
  font-variant-numeric: tabular-nums;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.eyebrow .icon {
  font-size: 1rem;
}

.eyebrow--sun {
  color: var(--sun-text);
}

/* ==========================================================================
   Layout
   Phone: one column, the map in the middle of the story.
   Desktop: the story on the left, the map filling the right.
   ========================================================================== */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas: 'brand' 'hero' 'diff' 'map' 'details' 'about' 'footer';
  gap: 2rem;
  max-width: 34rem;
  margin-inline: auto;
  padding: 1.5rem 1rem 2rem;
}

.brand {
  grid-area: brand;
}
.hero {
  grid-area: hero;
}
.diff {
  grid-area: diff;
}
.map-panel {
  grid-area: map;
  height: clamp(22rem, 62vh, 34rem);
}
.details {
  grid-area: details;
}
.about {
  grid-area: about;
}
.colophon {
  grid-area: footer;
}

@media (min-width: 64rem) {
  .layout {
    grid-template-columns: minmax(22rem, 28rem) minmax(0, 1fr);
    grid-template-rows: repeat(5, auto) 1fr;
    grid-template-areas:
      'brand map' 'hero map' 'diff map' 'details map' 'about map'
      'footer map';
    column-gap: clamp(2.5rem, 4vw, 4rem);
    max-width: none;
    min-height: 100dvh;
    padding: 0 0.75rem 0 clamp(2rem, 4vw, 4rem);
  }

  .brand {
    padding-top: 2.5rem;
  }

  .colophon {
    align-self: end;
    padding-bottom: 2rem;
  }

  .map-panel {
    position: sticky;
    top: 0.75rem;
    align-self: start;
    height: calc(100dvh - 1.5rem);
    margin-block: 0.75rem;
  }
}

/* Readouts stay faint until they describe a real location. */
.pending-fade {
  transition: opacity 0.4s var(--ease);
}

[data-pending] .pending-fade {
  opacity: 0.35;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}