/* ============================================================
   WorldLens - shared design system
   Single source of tokens + shell (nav, footer, buttons, type).
   Page-specific styles stay in each page's <style> block.
   ============================================================ */
:root,:root[data-theme="light"]{
  --canvas:#F7F7F5;--canvas-2:#F2F2F0;--surface:#FFFFFF;--surface-muted:#ECECEA;
  --border-soft:#E4E4E1;--border:#D6D6D2;--dot:#CFCFC9;
  --text:#171716;--text-2:#686865;--text-muted:#6E6E68;
  --btn-bg:#171716;--btn-fg:#FFFFFF;
  --glass:rgba(247,247,245,.72);--glass-border:#E4E4E1;
  --orange:#F36B2B;--acc10:rgba(243,107,43,.10);--acc35:rgba(243,107,43,.35);--acc55:rgba(243,107,43,.55);--acc-mbg:#FBE9DF;
  --pos:#2EAF74;--neg:#E64D55;
  --shadow-card:0 1px 2px rgba(23,23,22,.04),0 10px 24px -16px rgba(23,23,22,.16);
  --shadow-panel:0 40px 90px -50px rgba(23,23,22,.35);
  --focus:0 0 0 2px var(--canvas),0 0 0 4px var(--orange);
}
:root[data-theme="dark"]{
  --canvas:#141414;--canvas-2:#181818;--surface:#1D1D1F;--surface-muted:#232325;
  --border-soft:#29292C;--border:#343438;--dot:#3A3A3E;
  --text:#F4F4F2;--text-2:#A5A5A0;--text-muted:#8A8A85;
  --btn-bg:#F4F4F2;--btn-fg:#141414;
  --glass:rgba(20,20,20,.62);--glass-border:#29292C;
  --orange:#FF762E;--acc10:rgba(255,118,46,.12);--acc35:rgba(255,118,46,.40);--acc55:rgba(255,118,46,.60);--acc-mbg:rgba(255,118,46,.10);
  --pos:#2EAF74;--neg:#E96A71;
  --shadow-card:0 1px 2px rgba(0,0,0,.5),0 12px 26px -16px rgba(0,0,0,.5);
  --shadow-panel:0 40px 100px -55px rgba(0,0,0,.8);
}
:root{
  /* radius scale */
  --r-sm:8px;--r-btn:9px;--r-card:12px;--r-lg:18px;
  /* spacing scale (8-based) */
  --space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-8:48px;--space-10:64px;--space-12:80px;--space-16:112px;
  /* type scale */
  --fs-caption:11px;--fs-meta:12px;--fs-sm:14px;--fs-body:15px;--fs-body-lg:17px;
  /* Heading scale - single source of truth (index + every page title consume these) */
  --fs-h3:20px;
  --fs-h2:clamp(26px,3.4vw,40px);       /* sub-section headings */
  --fs-section:clamp(34px,5vw,60px);    /* homepage statement headings (.h-section) */
  --fs-h1:clamp(38px,5.5vw,60px);       /* standard page title (utility pages) */
  --fs-title:clamp(40px,6vw,72px);      /* editorial page hero (company, manifesto) */
  --fs-display:clamp(44px,7vw,84px);    /* homepage hero (.h-hero) */
  --mono:'Geist Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);background:var(--canvas);color:var(--text);-webkit-font-smoothing:antialiased;line-height:1.55;transition:background .4s ease,color .4s ease}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
:focus{outline:none}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:6px}
.mono{font-family:var(--mono)}
.eyebrow{font-family:var(--mono);font-size:var(--fs-meta);letter-spacing:.14em;text-transform:uppercase;color:var(--text-muted)}
.meta{font-family:var(--mono);font-size:var(--fs-meta);letter-spacing:.04em;color:var(--text-muted)}

/* ---- Nav ---- */
.nav{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:16px 32px;background:var(--glass);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--glass-border)}
.wordmark{display:flex;align-items:center;gap:11px;font-family:'Instrument Sans',var(--sans);font-weight:500;letter-spacing:-.033em;font-size:19px;color:var(--text)}
.wl-mark{display:block;flex:none;color:var(--text)}
.nav-links{display:flex;gap:28px}
.nav-links a{font-size:var(--fs-sm);color:var(--text-2);transition:color .3s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-right{display:flex;align-items:center;gap:18px}
.theme-toggle{width:34px;height:34px;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-2);transition:border-color .3s,color .3s;background:transparent}
.theme-toggle:hover{color:var(--text);border-color:var(--text-muted)}
.theme-toggle .sun{display:none}.theme-toggle .moon{display:block}
:root[data-theme="dark"] .theme-toggle .sun{display:block}
:root[data-theme="dark"] .theme-toggle .moon{display:none}
.nav-cta{padding:9px 16px;border-radius:var(--r-btn);font-size:var(--fs-sm);font-weight:500;background:var(--btn-bg);color:var(--btn-fg);transition:box-shadow .3s}
.nav-cta:hover{box-shadow:0 0 0 3px var(--acc35)}
.nav-toggle{display:none;width:40px;height:40px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{height:1.5px;width:20px;background:var(--text-2);display:block;transition:transform .3s var(--ease),opacity .2s}
.nav-toggle.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.nav-menu{display:none;position:fixed;top:0;left:0;right:0;z-index:99;flex-direction:column;gap:2px;padding:78px 24px 28px;background:var(--glass);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--glass-border);opacity:0;transform:translateY(-10px);transition:opacity .3s var(--ease),transform .3s var(--ease)}
.nav-menu.open{display:flex;opacity:1;transform:none}
.nav-menu a{padding:15px 2px;font-size:17px;color:var(--text);border-bottom:1px solid var(--border-soft)}
.nav-menu .m-cta{margin-top:18px;justify-content:center;width:100%}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 22px;border-radius:var(--r-btn);font-size:var(--fs-body);font-weight:500;letter-spacing:-.01em;white-space:nowrap;transition:transform .2s,box-shadow .3s,border-color .3s}
.btn:active{transform:translateY(1px)}
.btn .arw{transition:transform .35s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn-primary{background:var(--btn-bg);color:var(--btn-fg)}
.btn-primary:hover{box-shadow:0 0 0 3px var(--acc35)}
.btn-ghost{border:1px solid var(--border);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--text-muted)}
.btn[disabled],.btn.loading{opacity:.55;pointer-events:none}

/* ---- Footer ---- */
.footer{background:var(--canvas-2);border-top:1px solid var(--border-soft);padding:64px 32px 44px;margin-top:96px}
.footer-inner{max-width:1080px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer .wordmark .label,.footer .wordmark{color:var(--text)}
.footer .fcol h3,.fcol h3{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--text-muted);margin-bottom:16px}
.fcol a{display:block;font-size:var(--fs-sm);color:var(--text-2);margin-bottom:11px}
.fcol a:hover{color:var(--text)}
.footer-bottom{max-width:1080px;margin:44px auto 0;padding-top:22px;border-top:1px solid var(--border-soft);display:flex;justify-content:space-between;font-family:var(--mono);font-size:11px;color:var(--text-muted);letter-spacing:.04em}
.foot-mono{font-family:var(--mono);font-size:12px;color:var(--text-muted);letter-spacing:.04em}

@media (max-width:760px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .footer-inner{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-delay:0ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}