/* opengolf.ai — design tokens and component styles.
   Tokens are copied verbatim from the design system in design/_ds/. */

@import url("https://fonts.googleapis.com/css2?family=Figtree:ital,wght@0,300..900;1,300..900&family=IBM+Plex+Mono:wght@400;500;600&display=swap");

/* ---------------------------------------------------------------- tokens */
:root {
  /* Brand base: sampled directly from the opengolf.ai logo */
  --green-950:#062b26;--green-900:#0b3d36;--green-800:#0d4a42;--green-700:#12564a;
  --green-600:#186048;--green-500:#237a5c;--green-400:#3d9a76;--green-300:#6cbfa1;
  --green-200:#a3dcc7;--green-100:#d3efe4;--green-50:#ecf7f2;
  --mint-600:#1fa892;--mint-500:#2bc0a6;--mint-400:#3ecfb4;--mint-300:#80d0c8;
  --mint-200:#b3e5df;--mint-100:#dcf3f0;

  /* Paper / neutrals: warm, faintly green-shifted (the logo plate) */
  --paper:#f9faf4;--paper-2:#f2f4ea;--paper-3:#e8ebdf;
  --ink-900:#0e1f1b;--ink-800:#1c2f2a;--ink-700:#33443e;--ink-600:#4d5f58;
  --ink-500:#6b7c74;--ink-400:#8d9c94;--ink-300:#b3c0b8;--ink-200:#d3dbd3;--ink-100:#e7ece5;
  --white:#ffffff;

  /* Status */
  --amber-500:#c98a15;--amber-100:#f8ecd2;
  --clay-500:#b4462f;--clay-100:#f7dfd9;
  --sky-500:#2b7fa8;--sky-100:#dcecf4;

  /* Semantic aliases: use these in components */
  --brand-primary:var(--green-800);
  --brand-primary-hover:var(--green-900);
  --brand-primary-active:var(--green-950);
  --brand-accent:var(--mint-400);
  --brand-flag:var(--green-600);

  --surface-page:var(--paper);
  --surface-card:var(--white);
  --surface-sunken:var(--paper-2);
  --surface-inset:var(--paper-3);
  --surface-inverse:var(--green-900);
  --surface-accent-soft:var(--green-50);

  --text-body:var(--ink-800);
  --text-heading:var(--green-900);
  --text-muted:var(--ink-500);
  --text-faint:var(--ink-400);
  --text-inverse:var(--paper);
  --text-accent:var(--green-700);
  --text-link:var(--green-700);
  --text-link-hover:var(--green-950);

  --border-subtle:var(--ink-100);
  --border-default:var(--ink-200);
  --border-strong:var(--ink-300);
  --border-accent:var(--green-300);
  --border-focus:var(--mint-500);

  --status-success-fg:var(--green-500);--status-success-bg:var(--green-50);
  --status-warning-fg:var(--amber-500);--status-warning-bg:var(--amber-100);
  --status-danger-fg:var(--clay-500);--status-danger-bg:var(--clay-100);
  --status-info-fg:var(--sky-500);--status-info-bg:var(--sky-100);

  /* Typography */
  --font-sans:"Figtree","Helvetica Neue",Helvetica,sans-serif;
  --font-display:"Figtree","Helvetica Neue",Helvetica,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --text-display-1:clamp(40px,5.2vw,72px);
  --text-display-2:clamp(30px,3.8vw,52px);
  --text-h1:clamp(28px,3vw,38px);--text-h2:28px;--text-h3:21px;--text-h4:17px;
  --text-body-lg:18px;--text-size-body:15px;--text-body-sm:13px;--text-caption:12px;--text-micro:11px;

  --leading-tight:1.05;--leading-snug:1.2;--leading-normal:1.5;--leading-relaxed:1.65;
  --weight-light:300;--weight-regular:400;--weight-medium:500;
  --weight-semibold:600;--weight-bold:700;--weight-black:800;
  --tracking-display:-0.03em;--tracking-heading:-0.015em;--tracking-normal:0em;
  --tracking-label:0.06em;--tracking-eyebrow:0.14em;

  /* Spacing */
  --space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;
  --space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;--space-16:64px;
  --space-20:80px;--space-24:96px;--space-32:128px;
  --radius-xs:4px;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;
  --radius-xl:20px;--radius-2xl:28px;--radius-pill:999px;
  --container-narrow:720px;--container:1080px;--container-wide:1280px;
  --grid-cell:32px;

  /* Elevation */
  --shadow-none:none;
  --shadow-xs:0 1px 2px rgba(11,61,54,.06);
  --shadow-sm:0 1px 3px rgba(11,61,54,.07),0 1px 1px rgba(11,61,54,.04);
  --shadow-md:0 4px 14px rgba(11,61,54,.08);
  --shadow-lg:0 14px 36px rgba(11,61,54,.11);
  --shadow-focus:0 0 0 3px rgba(43,192,166,.32);
  --overlay-scrim:rgba(6,43,38,.44);
  --blur-panel:saturate(140%) blur(14px);
  --grid-plate:linear-gradient(var(--paper-3) 1px,transparent 1px),linear-gradient(90deg,var(--paper-3) 1px,transparent 1px);

  /* Motion */
  --ease-out:cubic-bezier(.2,.8,.25,1);
  --ease-in-out:cubic-bezier(.6,0,.3,1);
  --duration-instant:80ms;--duration-fast:130ms;--duration-base:190ms;--duration-slow:280ms;
  --transition-control:color var(--duration-fast) var(--ease-out),background-color var(--duration-fast) var(--ease-out),border-color var(--duration-fast) var(--ease-out),box-shadow var(--duration-fast) var(--ease-out),transform var(--duration-fast) var(--ease-out);
}

/* Inverted sections (footers, dark bands) */
.og-inverse {
  --surface-card:var(--green-800);--surface-page:var(--green-900);--surface-sunken:var(--green-950);
  --text-body:var(--green-100);--text-heading:var(--white);--text-muted:var(--green-200);
  --border-subtle:rgba(255,255,255,.10);--border-default:rgba(255,255,255,.16);
  --border-strong:rgba(255,255,255,.28);
  --text-link:var(--mint-400);--text-link-hover:var(--mint-300);
}

/* ------------------------------------------------------------------ base */
*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth;scroll-padding-top:86px}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}

body{
  margin:0;
  background:var(--surface-page);
  color:var(--text-body);
  font-family:var(--font-sans);
  font-size:var(--text-size-body);
  line-height:var(--leading-normal);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

a{color:var(--text-link);text-decoration:none;transition:color var(--duration-fast) var(--ease-out)}
a:hover{color:var(--text-link-hover);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{
  font-family:var(--font-display);color:var(--text-heading);
  letter-spacing:var(--tracking-heading);line-height:var(--leading-snug);
  font-weight:var(--weight-semibold);margin:0;
}
p{margin:0}
code,kbd,pre{font-family:var(--font-mono)}
img{max-width:100%}
::selection{background:var(--mint-200);color:var(--green-950)}
:focus-visible{outline:none;box-shadow:var(--shadow-focus);border-radius:var(--radius-xs)}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:100;
  padding:10px 16px;background:var(--green-900);color:var(--paper);
  border-radius:0 0 var(--radius-md) 0;font-size:var(--text-body-sm);font-weight:var(--weight-semibold);
}
.skip-link:focus{left:0;text-decoration:none}

.wrap{max-width:var(--container-wide);margin:0 auto;padding-left:32px;padding-right:32px}
.eyebrow{
  font-family:var(--font-mono);font-size:var(--text-micro);
  letter-spacing:var(--tracking-eyebrow);text-transform:uppercase;color:var(--text-muted);
}
.lede{font-size:var(--text-body-lg);line-height:var(--leading-relaxed);color:var(--ink-600);text-wrap:pretty}
.prose{font-size:var(--text-size-body);line-height:var(--leading-relaxed);color:var(--ink-600);text-wrap:pretty}
.og-inverse .prose{color:var(--green-100)}

/* --------------------------------------------------------------- icon */
.icon{display:inline-block;width:18px;height:18px;flex:0 0 auto;color:inherit;line-height:0;vertical-align:middle}

/* -------------------------------------------------------------- button */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;height:38px;padding:0 16px;border-radius:var(--radius-md);
  font-family:var(--font-sans);font-size:15px;font-weight:var(--weight-semibold);
  letter-spacing:-0.005em;line-height:1;white-space:nowrap;cursor:pointer;
  text-decoration:none;border:1px solid transparent;
  background:var(--brand-primary);color:var(--text-inverse);box-shadow:var(--shadow-xs);
  transition:var(--transition-control);
}
.btn:hover{background:var(--brand-primary-hover);color:var(--text-inverse);text-decoration:none}
.btn:active{background:var(--brand-primary-active);box-shadow:none;transform:translateY(1px)}
.btn .icon{width:16px;height:16px}

.btn--sm{height:30px;padding:0 12px;font-size:13px;gap:6px;border-radius:var(--radius-sm)}
.btn--sm .icon{width:14px;height:14px}
.btn--lg{height:46px;padding:0 22px;font-size:16px;gap:9px}
.btn--lg .icon{width:18px;height:18px}

.btn--secondary{background:var(--white);color:var(--text-heading);border-color:var(--border-default)}
.btn--secondary:hover{background:var(--paper-2);color:var(--text-heading);border-color:var(--border-strong)}
.btn--secondary:active{background:var(--paper-2);box-shadow:none}

/* --------------------------------------------------------------- badge */
.badge{
  display:inline-flex;align-items:center;gap:5px;height:22px;padding:0 9px;
  border-radius:var(--radius-pill);
  background:var(--green-50);color:var(--green-700);border:1px solid var(--green-200);
  font-family:var(--font-sans);font-size:var(--text-micro);font-weight:var(--weight-semibold);
  letter-spacing:0.02em;white-space:nowrap;
}
.badge .icon{width:12px;height:12px}

/* ------------------------------------------------------------ stat tile */
.stat{
  display:flex;flex-direction:column;gap:6px;padding:var(--space-4);
  background:var(--surface-card);border:1px solid var(--border-subtle);
  border-radius:var(--radius-md);box-shadow:var(--shadow-xs);
}
.stat__label{
  display:flex;align-items:center;gap:6px;font-size:var(--text-micro);
  letter-spacing:var(--tracking-label);text-transform:uppercase;
  color:var(--text-muted);font-weight:var(--weight-semibold);
}
.stat__label .icon{width:13px;height:13px}
.stat__value{display:flex;align-items:baseline;gap:5px}
.stat__value b{
  font-family:var(--font-mono);font-size:26px;font-weight:var(--weight-medium);
  color:var(--text-heading);letter-spacing:-0.02em;
}
.stat__unit{font-size:var(--text-body-sm);color:var(--text-faint)}

/* ---------------------------------------------------------- code block */
.code{
  background:var(--green-950);border-radius:var(--radius-md);
  overflow:hidden;border:1px solid rgba(255,255,255,.08);
}
.code__bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 12px;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);
}
.code__name{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--font-mono);font-size:var(--text-micro);color:var(--green-300);
}
.code__name .icon{width:13px;height:13px}
.code__copy{
  display:inline-flex;align-items:center;gap:5px;cursor:pointer;
  font-size:var(--text-micro);color:var(--green-300);font-family:var(--font-mono);
  background:none;border:0;padding:2px 4px;transition:color var(--duration-fast) var(--ease-out);
}
.code__copy:hover{color:var(--mint-400)}
.code__copy[data-copied="true"]{color:var(--mint-400)}
.code__copy .icon{width:13px;height:13px}
.code__copy .icon--check,.code__copy[data-copied="true"] .icon--copy{display:none}
.code__copy[data-copied="true"] .icon--check{display:inline-block}
.code pre{
  margin:0;padding:14px 16px;overflow-x:auto;
  font-family:var(--font-mono);font-size:var(--text-body-sm);
  line-height:1.65;color:var(--green-100);
}

/* ------------------------------------------------------------- callout */
.callout{
  display:flex;gap:10px;padding:var(--space-4);border-radius:var(--radius-md);
  background:var(--status-warning-bg);border:1px solid #eed9ac;
}
.callout__icon{color:var(--status-warning-fg);display:inline-flex;margin-top:1px}
.callout__icon .icon{width:17px;height:17px}
.callout__body{display:flex;flex-direction:column;gap:3px;min-width:0}
.callout__body strong{font-size:var(--text-body-sm);color:var(--green-900);font-weight:var(--weight-semibold)}
.callout__body p{font-size:var(--text-body-sm);color:var(--ink-800);line-height:var(--leading-normal)}

/* ---------------------------------------------------------------- card */
.card{
  display:flex;flex-direction:column;gap:8px;padding:22px;
  background:var(--surface-card);border:1px solid var(--border-subtle);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);
}
.card h3{font-size:var(--text-h4);font-weight:var(--weight-semibold)}

/* -------------------------------------------------------------- header */
.site-header{
  position:sticky;top:0;z-index:20;
  background:rgba(249,250,244,.86);
  -webkit-backdrop-filter:var(--blur-panel);backdrop-filter:var(--blur-panel);
  border-bottom:1px solid var(--border-subtle);
}
.site-header__inner{
  max-width:var(--container-wide);margin:0 auto;padding:0 32px;
  height:66px;display:flex;align-items:center;gap:36px;
}
.logo{display:inline-flex;align-items:center;gap:9px}
.logo:hover{text-decoration:none}
.logo__mark{height:33px;width:auto;display:block}
.logo__word{height:22px;width:auto;display:block}
.site-nav{display:flex;gap:26px;margin-right:auto;font-size:14px}
.site-nav a{color:var(--text-muted);font-weight:var(--weight-medium)}
.site-nav a:hover{color:var(--text-accent);text-decoration:none}
.header-gh{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text-muted)}
.header-gh:hover{color:var(--text-accent);text-decoration:none}
.header-gh .icon{width:15px;height:15px}

/* ---------------------------------------------------------------- hero */
.hero{
  background-image:var(--grid-plate);
  background-size:var(--grid-cell) var(--grid-cell);
  background-color:var(--paper);
  border-bottom:1px solid var(--border-subtle);
}
.hero__inner{
  max-width:var(--container-wide);margin:0 auto;padding:96px 32px 72px;
  display:flex;flex-direction:column;align-items:flex-start;gap:24px;
}
.hero h1{
  max-width:820px;font-size:var(--text-display-1);font-weight:var(--weight-black);
  letter-spacing:var(--tracking-display);line-height:var(--leading-tight);
}
.hero .lede{max-width:640px}
.hero__actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.hero__facts{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:14px;
  font-family:var(--font-mono);font-size:12px;color:var(--text-muted);
}

/* ------------------------------------------------------------ sections */
.section{max-width:var(--container-wide);margin:0 auto;padding:88px 32px}
.section--band{max-width:none;margin:0;padding:0}
.section--band > .wrap{padding-top:88px;padding-bottom:88px}
.band-sunken{background:var(--paper-2);border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle)}
.band-dark{background:var(--green-900);border-top:1px solid var(--border-subtle)}

/* project 01 */
.project{padding-bottom:0;display:flex;flex-direction:column;gap:24px}
.project__grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:start}
.project__copy{display:flex;flex-direction:column;align-items:flex-start;gap:20px}
.project__copy p{max-width:520px}
.project__copy h2{
  font-size:var(--text-display-2);font-weight:var(--weight-black);
  letter-spacing:var(--tracking-display);line-height:var(--leading-snug);
}
.project__copy code{font-size:14px;color:var(--text-accent)}
.project__actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.project__side{display:flex;flex-direction:column;gap:14px}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}

/* screenshot */
.shot{max-width:var(--container-wide);margin:0 auto;padding:40px 32px 88px}
.shot__frame{
  border:1px solid var(--border-subtle);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-xs);background:var(--green-950);
}
.shot__frame img{display:block;width:100%;height:auto}
.shot__caption{
  margin-top:14px;font-family:var(--font-mono);font-size:12px;
  color:var(--text-muted);text-wrap:pretty;
}

/* principles */
.principles h2{
  margin:18px 0 12px;font-size:var(--text-h1);font-weight:var(--weight-bold);
  letter-spacing:var(--tracking-heading);color:var(--white);
}
.principles .eyebrow{color:var(--mint-400)}
.principles__lede{margin-bottom:44px;max-width:620px;line-height:var(--leading-relaxed);color:var(--green-200);text-wrap:pretty}
.principles__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.principle{
  display:flex;flex-direction:column;gap:10px;padding:24px;
  border:1px solid rgba(255,255,255,.10);border-radius:var(--radius-lg);background:var(--green-800);
}
.principle h3{font-size:var(--text-h3);font-weight:var(--weight-semibold);color:var(--white)}

/* project 02 */
.next__grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:center}
.next__copy{display:flex;flex-direction:column;align-items:flex-start;gap:20px}
.next__copy p{max-width:500px}
.next__copy h2{
  font-size:var(--text-display-2);font-weight:var(--weight-black);
  letter-spacing:var(--tracking-display);line-height:var(--leading-snug);
}
.next__side{display:flex;flex-direction:column;gap:12px}
.needs{
  display:flex;flex-direction:column;background:var(--surface-card);
  border:1px solid var(--border-subtle);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-xs);overflow:hidden;
}
.needs__head{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;border-bottom:1px solid var(--border-subtle);background:var(--paper);
}
.needs__head span{
  font-family:var(--font-mono);font-size:var(--text-micro);
  letter-spacing:var(--tracking-label);text-transform:uppercase;color:var(--text-muted);
}
.needs__row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:16px 20px;border-bottom:1px solid var(--border-subtle);
}
.needs__row:last-child{border-bottom:0}
.needs__row dt{font-size:var(--text-size-body);color:var(--ink-700);margin:0}
.needs__row dd{margin:0;font-family:var(--font-mono);font-size:13px;color:var(--text-accent);text-align:right}
.needs__note{font-size:var(--text-body-sm);line-height:var(--leading-relaxed);color:var(--text-muted);text-wrap:pretty}

/* contribute */
.contribute__grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contribute__copy{display:flex;flex-direction:column;align-items:flex-start;gap:18px}
.contribute__copy h2{font-size:var(--text-h1);font-weight:var(--weight-bold);max-width:440px}
.contribute__copy p{max-width:460px}
.contribute__cards{display:grid;gap:14px}

/* -------------------------------------------------------------- footer */
.site-footer{background:var(--green-900);border-top:1px solid rgba(255,255,255,.10)}
.site-footer__inner{
  max-width:var(--container-wide);margin:0 auto;padding:64px 32px 40px;
  display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:48px;align-items:start;
}
.site-footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:18px}
.footer-plate{display:inline-flex;padding:12px 16px;background:var(--paper);border-radius:var(--radius-md)}
.footer-plate:hover{text-decoration:none}
.footer-plate .logo__mark{height:30px}
.footer-plate .logo__word{height:20px}
.site-footer__brand p{max-width:320px;font-size:var(--text-body-sm);line-height:var(--leading-relaxed);color:var(--green-200);text-wrap:pretty}
.footer-col{display:flex;flex-direction:column;gap:12px}
.footer-col > span{
  font-family:var(--font-mono);font-size:var(--text-micro);
  letter-spacing:var(--tracking-label);text-transform:uppercase;color:var(--green-300);
}
.footer-col a{font-size:var(--text-body-sm);color:var(--mint-400)}
.footer-col a:hover{color:var(--mint-300)}
.attribution{max-width:var(--container-wide);margin:0 auto;padding:0 32px 48px}
.attribution ul{
  display:flex;flex-wrap:wrap;gap:8px 26px;margin:0;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.10);list-style:none;
  font-family:var(--font-mono);font-size:12px;color:var(--green-300);
}

/* --------------------------------------------------------- responsive */
@media (max-width:1040px){
  .project__grid,.next__grid,.contribute__grid{grid-template-columns:1fr;gap:40px}
  .next__copy p,.project__copy p,.contribute__copy p,.contribute__copy h2{max-width:none}
  .site-footer__inner{grid-template-columns:1fr 1fr;gap:36px}
  .site-footer__brand{grid-column:1 / -1}
}

@media (max-width:860px){
  html{scroll-padding-top:70px}
  .wrap,.section,.shot,.hero__inner,.site-header__inner,.site-footer__inner,.attribution{padding-left:22px;padding-right:22px}
  .site-nav{display:none}
  .header-gh span{display:none}
  .site-header__inner{gap:16px;height:60px}
  .logo{margin-right:auto}
  .hero__inner{padding-top:64px;padding-bottom:56px}
  .section,.section--band > .wrap{padding-top:64px;padding-bottom:64px}
  .shot{padding-top:32px;padding-bottom:64px}
  .principles__grid{grid-template-columns:1fr}
}

@media (max-width:560px){
  .stat-grid{grid-template-columns:1fr}
  .site-footer__inner{grid-template-columns:1fr}
  .hero__actions .btn,.project__actions .btn{flex:1 1 auto}
  .needs__row{flex-direction:column;gap:4px}
  .needs__row dd{text-align:left}
}

/* Grid and flex children must be allowed to shrink below their content's
   min-content width — the quickstart <pre> is wider than a phone and scrolls
   inside its own box rather than widening the page. */
.project__grid > *,.next__grid > *,.contribute__grid > *,.principles__grid > *,
.stat-grid > *,.site-footer__inner > *,.project__side > *,.next__side > *,
.hero__inner > *,.project__copy > *,.next__copy > *,.contribute__copy > *{min-width:0}
.code,.code pre,.needs,.callout__body,.stat{min-width:0}