@layer reset, tokens, base, components, views, utilities;

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    min-width: 0;
  }

  :root {
    interpolate-size: allow-keywords;
    scrollbar-gutter: stable;
    text-wrap: pretty;
    overflow-wrap: break-word;
    font-synthesis: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
  }

  body {
    margin: 0;
    min-height: 100svh;
  }

  h1, h2, h3, h4 { text-wrap: balance; }

  img, svg, video {
    display: block;
    max-width: 100%;
    height: auto;
  }

  input, textarea, select { font-size: max(16px, 1rem); }

  button, a, [role="button"] { touch-action: manipulation; }

  button, [role="button"] {
    user-select: none;
    -webkit-user-select: none;
  }
}

@layer tokens {
  :root {
    color-scheme: light dark;

    --bg: light-dark(oklch(0.975 0.003 264), oklch(0.165 0.006 264));
    --surface: light-dark(oklch(1 0 none), oklch(0.215 0.008 264));
    --surface-sunken: light-dark(oklch(0.95 0.004 264), oklch(0.135 0.006 264));
    --border: light-dark(oklch(0.89 0.006 264), oklch(0.32 0.01 264));
    --text: light-dark(oklch(0.22 0.01 264), oklch(0.96 0.004 264));
    --text-muted: light-dark(oklch(0.47 0.015 264), oklch(0.74 0.012 264));

    --primary: light-dark(oklch(0.5 0.19 264), oklch(0.7 0.15 264));
    --on-primary: light-dark(oklch(1 0 none), oklch(0.16 0.02 264));
    --record: light-dark(oklch(0.56 0.21 27), oklch(0.67 0.2 27));
    --on-record: light-dark(oklch(1 0 none), oklch(0.16 0.02 27));
    --success: light-dark(oklch(0.5 0.13 152), oklch(0.77 0.15 152));
    --go: light-dark(oklch(0.52 0.15 150), oklch(0.74 0.17 150));
    --on-go: light-dark(oklch(1 0 none), oklch(0.16 0.02 150));
    --warning: light-dark(oklch(0.56 0.17 55), oklch(0.83 0.15 78));
    --amber: oklch(0.84 0.16 80);
    --on-amber: oklch(0.3 0.07 60);
    --danger: var(--record);

    --hover-mix: light-dark(oklch(0 0 none), oklch(1 0 none));
    --primary-hover: color-mix(in oklch, var(--primary), var(--hover-mix) 15%);
    --record-hover: color-mix(in oklch, var(--record), var(--hover-mix) 15%);
    --go-hover: color-mix(in oklch, var(--go), var(--hover-mix) 15%);
    --primary-subtle: color-mix(in oklch, var(--primary) 12%, transparent);
    --record-subtle: color-mix(in oklch, var(--record) 14%, transparent);
    --success-subtle: color-mix(in oklch, var(--success) 14%, transparent);
    --warning-subtle: color-mix(in oklch, var(--warning) 16%, transparent);

    --video-bg: oklch(0.13 0.006 264);
    --video-text: oklch(0.96 0 none);

    --radius-s: 0.5rem;
    --radius-m: 0.875rem;
    --radius-l: 1.25rem;
    --shadow: 0 1px 2px oklch(0.2 0.02 264 / 0.06), 0 4px 16px oklch(0.2 0.02 264 / 0.06);

    --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
    --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);

    --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

    /* One fluid scale for type and space: 18px to 20px body, ratio 1.2 to 1.25. */
    --narrow: 20;
    --wide: 77.5;
    --size-narrow: 1;
    --size-wide: 1.0625;
    --ratio-narrow: 1.2;
    --ratio-wide: 1.25;

    --fluid: clamp(0rem, (100vw - var(--narrow) * 1rem) / (var(--wide) - var(--narrow)), 1rem);
    --at-narrow: calc(var(--size-narrow) * (1rem - var(--fluid)));
    --at-wide: calc(var(--size-wide) * var(--fluid));

    --step--1: calc(var(--step-0) / var(--ratio-narrow));
    --step-0: calc(var(--at-narrow) + var(--at-wide));
    --step-1: calc(var(--at-narrow) * var(--ratio-narrow) + var(--at-wide) * var(--ratio-wide));
    --step-2: calc(var(--at-narrow) * pow(var(--ratio-narrow), 2) + var(--at-wide) * pow(var(--ratio-wide), 2));
    --step-3: calc(var(--at-narrow) * pow(var(--ratio-narrow), 3) + var(--at-wide) * pow(var(--ratio-wide), 3));
    --step-4: calc(var(--at-narrow) * pow(var(--ratio-narrow), 4) + var(--at-wide) * pow(var(--ratio-wide), 4));

    --space-2xs: calc(0.25 * var(--step-0));
    --space-xs: calc(0.5 * var(--step-0));
    --space-s: calc(0.75 * var(--step-0));
    --space-m: var(--step-0);
    --space-l: calc(1.5 * var(--step-0));
    --space-xl: calc(2 * var(--step-0));
    --space-s-l: calc(var(--at-narrow) * 0.75 + 1.5 * var(--at-wide));
  }

  [data-theme="light"] { color-scheme: light; }
  [data-theme="dark"] { color-scheme: dark; }
}

@layer base {
  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: var(--step-0);
    line-height: 1.5;
  }

  h1, h2, h3 {
    margin-block: 0;
    line-height: 1.15;
    letter-spacing: -0.01em;
  }

  h1 { font-size: var(--step-3); }
  h2 { font-size: var(--step-2); }
  h3 { font-size: var(--step-0); }

  p { margin-block: 0; }

  small { font-size: var(--step--1); }

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

  code, kbd { font-family: var(--font-mono); font-size: 0.9em; }

  :focus-visible {
    outline: max(2px, 0.08em) solid var(--primary);
    outline-offset: 0.2em;
  }

  [hidden] { display: none !important; }
}

@layer utilities {
  .visually-hidden:where(:not(:focus-within, :active)) {
    position: absolute !important;
    clip-path: inset(50%) !important;
    overflow: hidden !important;
    width: 1px !important;
    height: 1px !important;
    margin: -1px !important;
    padding: 0 !important;
    border: 0 !important;
    white-space: nowrap !important;
  }

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

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

  /* An icon in a button always has the color of the button text. */
  .button .icon { color: inherit; }
}