/* ── DESIGN TOKENS ── */
:root{
  --bg:#09090B;
  --surface:#111113;
  --surface-raised:#18181B;
  --border:#27272A;
  --border-strong:#3F3F46;
  --text:#FAFAFA;
  --text-muted:#A1A1AA;
  --text-subtle:#52525B;
  --cta-bg:#FAFAFA;
  --cta-text:#09090B;
}

/* ── LIGHT MODE TOKENS ── */
[data-theme="light"]{
  --bg:#FFFFFF;
  --surface:#FAFAFA;
  --surface-raised:#F4F4F5;
  --border:#E4E4E7;
  --border-strong:#D4D4D8;
  --text:#09090B;
  --text-muted:#71717A;
  --text-subtle:#A1A1AA;
  --cta-bg:#09090B;
  --cta-text:#FAFAFA;
}
@media(prefers-color-scheme:light){
  :root:not([data-theme="dark"]){
    --bg:#FFFFFF;
    --surface:#FAFAFA;
    --surface-raised:#F4F4F5;
    --border:#E4E4E7;
    --border-strong:#D4D4D8;
    --text:#09090B;
    --text-muted:#71717A;
    --text-subtle:#A1A1AA;
    --cta-bg:#09090B;
    --cta-text:#FAFAFA;
  }
}

/* ── RESET ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}

/* ── BASE ── */
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',system-ui,sans-serif;
  font-feature-settings:"ss01","cv11";
  min-width:390px;
  overflow-x:hidden;
}

/* ── GRAIN ── */
.grain{
  position:fixed;inset:0;pointer-events:none;z-index:9999;
  opacity:.008;
}

/* ── FOCUS ── */
:focus-visible{outline:2px solid var(--border-strong);outline-offset:2px;border-radius:2px}

/* ── NAV ── */
nav{
  position:fixed;top:0;left:0;right:0;height:64px;
  background:rgba(9,9,11,.92);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
  z-index:1000;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 48px;
}
.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.nav-icon{
  width:28px;height:28px;border-radius:8px;
  overflow:hidden;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.nav-wordmark{font-size:18px;font-weight:800;color:var(--text);letter-spacing:-.5px}
.nav-right{display:flex;align-items:center;gap:24px}
.nav-links{display:flex;align-items:center;gap:20px}
.nav-links a{font-size:14px;color:var(--text-subtle);text-decoration:none;transition:color .15s}
.nav-links a:hover{color:var(--text-muted)}
.nav-divider{width:1px;height:20px;background:var(--border)}

/* ── THEME TOGGLE ── */
.theme-toggle{
  width:36px;height:36px;border-radius:8px;
  border:1px solid var(--border);
  background:transparent;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-muted);
  transition:color .15s,border-color .15s;
  flex-shrink:0;
}
.theme-toggle:hover{color:var(--text);border-color:var(--border-strong)}
.theme-toggle .icon-sun{display:none}
.theme-toggle .icon-moon{display:block}
[data-theme="light"] .theme-toggle .icon-sun{display:block}
[data-theme="light"] .theme-toggle .icon-moon{display:none}
@media(prefers-color-scheme:light){
  :root:not([data-theme="dark"]) .theme-toggle .icon-sun{display:block}
  :root:not([data-theme="dark"]) .theme-toggle .icon-moon{display:none}
}

/* ── LIGHT MODE NAV ── */
[data-theme="light"] nav{background:rgba(255,255,255,.92);border-bottom-color:var(--border)}

/* ── FOOTER ── */
footer{
  border-top:1px solid var(--border);
  padding:64px 48px;
}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;gap:80px;justify-content:space-between;align-items:flex-start}
.footer-brand{display:flex;flex-direction:column;gap:12px;max-width:280px}
.footer-logo{display:flex;align-items:center;gap:10px}
.footer-tagline{font-size:14px;color:var(--text-subtle);line-height:1.5}
.footer-made{font-size:13px;color:var(--border-strong)}
.footer-links{display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.footer-links a{font-size:14px;color:var(--text-subtle);text-decoration:none;transition:color .15s}
.footer-links a:hover{color:var(--text)}
.footer-copy{font-size:11px;color:var(--border-strong);margin-top:12px;text-align:right}

/* ── RESPONSIVE ── */
@media(max-width:900px){
  nav{padding:0 24px}
  footer{padding:40px 24px}
  .footer-inner{flex-direction:column;gap:40px}
  .footer-links{align-items:flex-start}
  .footer-copy{text-align:left}
}