/* Hallmark · genre: modern-minimal · macrostructure: Split Studio · H2 knobs: ratio=6/6, proof=product-capture, divider=negative-space
 * theme: custom · vibe: "Google-native, clear, useful, calm" · paper: oklch(98.2% 0.006 250) · accent: oklch(52% 0.19 255)
 * display: Roboto Flex + Noto Sans SC · body: Roboto + Noto Sans SC · axes: light / system-native / cool
 * nav: N1b (links=3, dropdowns=none, scroll=frost) · footer: Ft2 (spaced, middot) · enrichment: interactive product simulations
 * studied: no · context: explicit user direction · contrast: pass (40–41) · nav: N1b · footer: Ft2 · slop: pass (42–45)
 * honest: pass (46) · chrome: pass (47) · tokens: pass (48) · responsive/mobile: pass (34, 49–57) · icons: pass (30)
 * Hallmark · pre-emit critique: P4 H4 E4 S5 R5 V4
 */

:root {
  color-scheme: light;

  --font-display: "Roboto Flex", "Noto Sans SC", "PingFang SC", sans-serif;
  --font-body: "Roboto", "Noto Sans SC", "PingFang SC", "Microsoft YaHei UI", sans-serif;
  --font-utility: "Roboto Flex", "Noto Sans SC", sans-serif;

  --space-3xs: 0.125rem;
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 9rem;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.25rem;
  --text-lg: 1.5625rem;
  --text-xl: 1.953rem;
  --text-2xl: 2.441rem;
  --text-3xl: 3.052rem;
  --text-display: clamp(3rem, 4.8vw + 0.4rem, 4.75rem);

  --page-gutter: clamp(1rem, 4vw, 4.5rem);
  --page-max: 84rem;
  --reading-measure: 62ch;

  --radius-control: 1.375rem;
  --radius-sm: 0.75rem;
  --radius-md: 1.25rem;
  --radius-lg: 1.75rem;
  --radius-xl: 2rem;
  --radius-pill: 999px;
  --rule: 1px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-micro: 120ms;
  --dur-short: 220ms;
  --dur-long: 420ms;

  --z-base: 1;
  --z-raised: 10;
  --z-sticky: 200;
  --z-modal: 400;

  --color-paper: oklch(98.2% 0.006 250);
  --color-paper-solid: oklch(99.2% 0.003 250);
  --color-surface: oklch(96% 0.009 250);
  --color-surface-2: oklch(93.5% 0.015 250);
  --color-surface-blue: oklch(95% 0.028 250);
  --color-surface-jelly: oklch(93.5% 0.052 250);
  --color-surface-jelly-soft: oklch(96.5% 0.025 250);
  --color-ink: oklch(25% 0.012 250);
  --color-ink-2: oklch(38% 0.014 250);
  --color-muted: oklch(48% 0.015 250);
  --color-rule: oklch(86% 0.012 250);
  --color-rule-strong: oklch(75% 0.018 250);
  --color-accent: oklch(52% 0.19 255);
  --color-accent-hover: oklch(46% 0.18 255);
  --color-accent-soft: oklch(92% 0.045 255);
  --color-accent-ink: oklch(98.5% 0.005 250);
  --color-focus: oklch(23% 0.12 255);
  --color-success: oklch(55% 0.14 150);
  --color-error: oklch(52% 0.2 25);
  --color-overlay: oklch(18% 0.02 250 / 0.72);

  --shadow-whisper: 0 1px 2px oklch(25% 0.015 250 / 0.08);
  --shadow-float: 0 0.75rem 2.5rem oklch(30% 0.025 250 / 0.14);
  --shadow-jelly: 0 1.25rem 3rem -1.75rem oklch(38% 0.08 255 / 0.34);
  --shadow-control: 0 0.5rem 1.25rem -0.75rem oklch(38% 0.08 255 / 0.3);
}

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

html,
body {
  margin: 0;
  min-width: 20rem;
  overflow-x: clip;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  background: var(--color-paper);
  color: var(--color-ink-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
p,
ul,
ol,
figure {
  margin: 0;
}

ul,
ol {
  padding: 0;
}

img,
svg {
  display: block;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

::selection {
  background: var(--color-accent-soft);
  color: var(--color-ink);
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}