/* ============================================
   Swiss AI Group — Developer Docs
   Same editorial design system as swissaigroup.com
   ============================================ */

@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 300 500;
  font-display: swap;
  src: url('/assets/fonts/fraunces-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 300 500;
  font-display: swap;
  src: url('/assets/fonts/fraunces-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --color-bg: #F4F2EC;
  --color-bg-alt: #EBE7DB;
  --color-bg-dark: #0F1B19;
  --color-bg-card: #FBFAF5;

  --color-text: #1A1A1C;
  --color-text-muted: #5C5C5A;
  --color-text-soft: #828079;
  --color-text-inverse: #F4F2EC;

  --color-border: #D6D2C2;
  --color-border-strong: #B8B3A0;
  --color-border-subtle: #E3DFD0;

  --color-accent: #1F5040;
  --color-accent-hover: #163B30;
  --color-accent-light: #2D7A60;
  --color-accent-soft: #C8D9D0;

  --color-amber: #B68B3A;

  --code-bg: #0F1B19;
  --code-text: #E4E8E2;
  --code-muted: #7E9488;
  --code-inline-bg: #E7E2D4;
  --code-inline-text: #1F5040;

  --font-serif: 'Fraunces', 'New York', 'Iowan Old Style', 'Charter', Georgia, 'Times New Roman', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-full: 999px;

  --shadow-md: 0 4px 12px rgba(26, 26, 28, 0.06), 0 2px 4px rgba(26, 26, 28, 0.04);
  --shadow-lg: 0 18px 36px rgba(26, 26, 28, 0.08), 0 6px 12px rgba(26, 26, 28, 0.04);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 0.15s var(--ease);
  --transition: 0.3s var(--ease);

  --header-height: 64px;
}

[data-theme="dark"] {
  --color-bg: #0C1512;
  --color-bg-alt: #101D18;
  --color-bg-dark: #070F0D;
  --color-bg-card: #131F1B;

  --color-text: #ECEAE1;
  --color-text-muted: #9FA9A1;
  --color-text-soft: #7C857E;
  --color-text-inverse: #F4F2EC;

  --color-border: #243029;
  --color-border-strong: #3A473F;
  --color-border-subtle: #1A241F;

  --color-accent: #5FBE99;
  --color-accent-hover: #7BCFAC;
  --color-accent-light: #6FC8A2;
  --color-accent-soft: #18352B;

  --color-amber: #D8AB5E;

  --code-bg: #060D0B;
  --code-text: #E4E8E2;
  --code-muted: #6E847A;
  --code-inline-bg: #18352B;
  --code-inline-text: #7BCFAC;

  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5), 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 18px 36px rgba(0, 0, 0, 0.55), 0 6px 14px rgba(0, 0, 0, 0.4);

  color-scheme: dark;
}

/* CJK + Khmer font stacks */
html[lang="zh"] { --font-serif: 'Songti SC', 'Source Han Serif SC', 'Noto Serif SC', 'PingFang SC', serif; --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', 'Noto Sans SC', -apple-system, system-ui, sans-serif; }
html[lang="ja"] { --font-serif: 'Hiragino Mincho ProN', 'Yu Mincho', 'Source Han Serif JP', 'Noto Serif JP', serif; --font-sans: 'Hiragino Sans', 'Yu Gothic', 'Meiryo', 'Source Han Sans JP', 'Noto Sans JP', -apple-system, system-ui, sans-serif; }
html[lang="ko"] { --font-serif: 'Apple SD Gothic Neo', 'Nanum Myeongjo', 'Source Han Serif KR', 'Noto Serif KR', serif; --font-sans: 'Apple SD Gothic Neo', 'Malgun Gothic', 'Source Han Sans KR', 'Noto Sans KR', -apple-system, system-ui, sans-serif; }
html[lang="km"] { --font-serif: 'Khmer OS Muol Light', 'Khmer OS', 'Noto Serif Khmer', 'Hanuman', serif; --font-sans: 'Khmer OS', 'Noto Sans Khmer', 'Hanuman', 'Battambang', -apple-system, system-ui, sans-serif; }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  letter-spacing: -0.005em;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-accent-hover); }
button { font-family: inherit; font-size: inherit; border: none; background: none; cursor: pointer; }

::selection { background-color: rgba(31, 80, 64, 0.18); }

html.theme-transition, html.theme-transition *, html.theme-transition *::before, html.theme-transition *::after {
  transition: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease, fill 0.35s ease, box-shadow 0.35s ease !important;
}

/* ============== Header ============== */
.docs-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-height);
  background-color: rgba(244, 242, 236, 0.88);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(26, 26, 28, 0.06);
}
[data-theme="dark"] .docs-header { background-color: rgba(12, 21, 18, 0.82); border-bottom-color: rgba(255, 255, 255, 0.07); }
.docs-header-inner {
  height: 100%; max-width: 1280px; margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex; align-items: center; gap: var(--space-4);
}
.brand { display: flex; align-items: center; gap: var(--space-3); font-family: var(--font-serif); font-weight: 400; font-size: 1.0625rem; letter-spacing: -0.015em; color: var(--color-text); }
.brand .logo-mark { width: auto; height: 24px; flex-shrink: 0; }
.brand .logo-dark { display: none; }
[data-theme="dark"] .brand .logo-light { display: none; }
[data-theme="dark"] .brand .logo-dark { display: block; }
.brand .tag { color: var(--color-text-soft); font-family: var(--font-sans); font-weight: 500; font-size: 0.8125rem; letter-spacing: 0; padding-left: 2px; }
.docs-header .spacer { flex: 1; }
.docs-nav { display: flex; align-items: center; gap: var(--space-6); }
.docs-nav a.nav-link { font-size: 0.9rem; color: var(--color-text-muted); font-weight: 400; }
.docs-nav a.nav-link:hover { color: var(--color-text); }

/* theme toggle */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: var(--radius-full);
  border: 1px solid var(--color-border-strong); background: transparent; color: var(--color-text);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}
.theme-toggle:hover { background-color: rgba(26, 26, 28, 0.05); border-color: var(--color-text); }
[data-theme="dark"] .theme-toggle:hover { background-color: rgba(255, 255, 255, 0.07); }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

/* lang switcher */
.lang-switcher { position: relative; }
.lang-button { display: flex; align-items: center; gap: 0.25rem; font-size: 0.85rem; color: var(--color-text-muted); padding: 0.5rem 0.7rem; border-radius: var(--radius-sm); font-weight: 400; }
.lang-button:hover { background-color: rgba(26, 26, 28, 0.04); color: var(--color-text); }
[data-theme="dark"] .lang-button:hover { background-color: rgba(255, 255, 255, 0.07); }
.lang-dropdown {
  position: absolute; top: calc(100% + 8px); right: 0;
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); box-shadow: var(--shadow-lg);
  min-width: 150px; padding: var(--space-2);
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  transition: all var(--transition-fast); z-index: 50;
}
.lang-switcher:hover .lang-dropdown, .lang-switcher:focus-within .lang-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-dropdown a { display: block; padding: 0.45rem 0.7rem; font-size: 0.85rem; border-radius: var(--radius-sm); color: var(--color-text); }
.lang-dropdown a:hover { background-color: var(--color-bg-alt); color: var(--color-text); }
.lang-dropdown a.active { color: var(--color-accent); font-weight: 500; }

/* ============== Layout ============== */
.layout { display: grid; grid-template-columns: 256px minmax(0, 1fr); max-width: 1280px; margin: 0 auto; }
aside {
  position: sticky; top: var(--header-height); align-self: start;
  height: calc(100vh - var(--header-height)); overflow-y: auto;
  padding: 2rem 1rem 3rem 1.5rem; border-right: 1px solid var(--color-border-subtle);
}
aside .group { font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-soft); margin: 1.5rem 0 0.5rem; font-weight: 600; }
aside .group:first-child { margin-top: 0; }
aside a { display: block; color: var(--color-text-muted); font-size: 0.9rem; padding: 0.35rem 0.7rem; border-radius: var(--radius-md); }
aside a:hover { background: var(--color-bg-alt); color: var(--color-text); }
aside a.active { background: var(--color-accent-soft); color: var(--color-accent-hover); font-weight: 500; }
[data-theme="dark"] aside a.active { color: var(--color-accent); }

main { padding: 3rem 3.5rem 8rem; min-width: 0; }
.eyebrow { display: inline-block; font-family: var(--font-sans); font-size: 0.8125rem; font-weight: 500; letter-spacing: 0.02em; color: var(--color-accent); margin-bottom: 1rem; position: relative; padding-left: 1.25rem; }
.eyebrow::before { content: ""; position: absolute; left: 0; top: 50%; width: 12px; height: 1px; background: var(--color-accent); }
main h1 { font-family: var(--font-serif); font-size: clamp(2.4rem, 5vw, 3.4rem); font-weight: 360; line-height: 1.05; letter-spacing: -0.018em; margin: 0 0 0.75rem; }
.lead { font-size: clamp(1.0625rem, 1.5vw, 1.2rem); line-height: 1.55; color: var(--color-text-muted); max-width: 60ch; margin: 0 0 2.5rem; }
main h2 { font-family: var(--font-serif); font-size: clamp(1.65rem, 3vw, 2.1rem); font-weight: 380; line-height: 1.15; letter-spacing: -0.012em; margin: 3.25rem 0 0.85rem; }
main h3 { font-family: var(--font-sans); font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.005em; margin: 1.75rem 0 0.5rem; }
main p { margin: 0.7rem 0; }
main ul { margin: 0.7rem 0; padding-left: 1.25rem; }
main li { margin: 0.35rem 0; }
section { scroll-margin-top: calc(var(--header-height) + 16px); }

/* notes */
.note { border: 1px solid var(--color-border); background: var(--color-bg-card); border-radius: var(--radius-lg); padding: 0.95rem 1.1rem; margin: 1.1rem 0; font-size: 0.95rem; box-shadow: var(--shadow-md); }
.note.accent { border-color: var(--color-accent-light); background: var(--color-accent-soft); }
[data-theme="dark"] .note.accent { background: var(--color-accent-soft); border-color: var(--color-accent); }
.note strong { color: var(--color-text); }

/* code */
code { font-family: var(--font-mono); font-size: 0.875em; }
:not(pre) > code { background: var(--code-inline-bg); color: var(--code-inline-text); padding: 0.12em 0.4em; border-radius: var(--radius-sm); font-weight: 500; }
pre.code {
  position: relative; background: var(--code-bg); color: var(--code-text);
  padding: 1.05rem 1.15rem; border-radius: var(--radius-lg); overflow-x: auto;
  font-size: 0.85rem; line-height: 1.6; margin: 1rem 0;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
pre.code code { font-family: var(--font-mono); color: inherit; background: none; padding: 0; }
pre.code .lang { position: absolute; top: 0.6rem; right: 4.2rem; font-size: 0.65rem; color: var(--code-muted); text-transform: uppercase; letter-spacing: 0.06em; }
button.copy {
  position: absolute; top: 0.55rem; right: 0.55rem;
  background: rgba(255, 255, 255, 0.07); color: #C6D2CB; border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md); padding: 0.25rem 0.65rem; font-size: 0.72rem; cursor: pointer; font-family: var(--font-sans);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}
button.copy:hover { background: rgba(255, 255, 255, 0.16); color: #fff; }

/* tables */
table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--color-border-subtle); vertical-align: top; }
th { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-soft); font-weight: 600; }
td code { white-space: nowrap; }
.pill { display: inline-block; font-size: 0.65rem; font-weight: 600; padding: 0.12em 0.55em; border-radius: var(--radius-full); background: var(--color-accent); color: #fff; letter-spacing: 0.03em; vertical-align: middle; }
[data-theme="dark"] .pill { background: #1F6B50; }
.method { font-family: var(--font-mono); font-weight: 600; color: var(--color-accent); font-size: 0.7em; letter-spacing: 0.04em; vertical-align: middle; margin-right: 0.4rem; }

/* footer */
.docs-footer { background-color: var(--color-bg-dark); color: var(--color-text-inverse); margin-top: 2rem; }
.docs-footer-inner { max-width: 1280px; margin: 0 auto; padding: 2.5rem var(--space-6); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-4); font-size: 0.875rem; color: #A8A4A0; }
.docs-footer a { color: #DDD8C6; }
.docs-footer a:hover { color: var(--color-text-inverse); }
.docs-footer .footer-links { display: flex; gap: var(--space-6); flex-wrap: wrap; }

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  aside { display: none; }
  main { padding: 2rem 1.4rem 5rem; }
  .docs-nav .nav-link { display: none; }
}