/* ==========================================================================
   Shared public shell for kevinalthaus.com demo projects.
   Mounted into each demo container at /shared/. Provides the site's design
   tokens (nature palette, light/dark), fonts, nav, and footer so every demo
   renders as a page of the site. Demo-specific styles go in the demo itself.
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600&family=Karla:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root{ /* light — "morning stone" */
  --bg:#f6f5f0; --surface:#fdfcf9; --surface-2:#eceae2; --text:#232821; --text-2:#4c5347; --muted:#5f6758;
  --line:#dedbd1; --line-strong:#c8c5b8; --accent:#2c6b4f; --accent-deep:#235640; --on-accent:#ffffff;
  --serif:'Fraunces',Georgia,serif; --sans:'Karla',system-ui,sans-serif; --mono:'JetBrains Mono',ui-monospace,monospace;
}
:root[data-theme="dark"]{ /* dark — "forest dusk" */
  --bg:#171c18; --surface:#1f2620; --surface-2:#2a322b; --text:#e9e7de; --text-2:#c4c3b6; --muted:#9aa291;
  --line:#2f372f; --line-strong:#414a41; --accent:#96c7a7; --accent-deep:#b3d8c0; --on-accent:#14261b;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);
  font-family:var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}

.site-nav{border-bottom:1px solid var(--line);background:var(--bg);flex-shrink:0}
.site-nav-inner{max-width:1120px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;gap:22px}
.site-brand{display:flex;align-items:center;gap:10px;margin-right:auto}
.site-mark{width:28px;height:28px;border-radius:7px;background:var(--accent);color:var(--on-accent);display:grid;place-items:center;font-family:var(--serif);font-weight:600;font-size:16px}
.site-brandname{font-weight:700;font-size:15px}
.site-links{display:flex;gap:4px}
.site-links a{padding:7px 12px;border-radius:8px;font-size:14px;color:var(--text-2);font-weight:500}
.site-links a:hover{background:var(--surface-2);color:var(--text)}
.site-theme{width:34px;height:34px;border-radius:8px;border:1px solid var(--line-strong);background:var(--surface);color:var(--text-2);cursor:pointer;font-size:14px}
.site-theme:hover{border-color:var(--accent);color:var(--accent)}

/* content region — demos put their page inside <main class="demo-page"> */
.demo-page{flex:1 0 auto;display:flex;flex-direction:column;width:100%}
.demo-wrap{max-width:1120px;margin:0 auto;padding:56px 24px;width:100%}
.demo-h1{font-family:var(--serif);font-weight:500;font-size:clamp(30px,5vw,44px);letter-spacing:-.015em;margin:0 0 12px}
.demo-lead{color:var(--text-2);font-size:17px;line-height:1.6;margin:0;max-width:56ch}

.site-footer{border-top:1px solid var(--line);background:var(--surface);flex-shrink:0}
.site-footer-inner{max-width:1120px;margin:0 auto;padding:26px 24px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;font-size:14px;color:var(--muted)}
.site-fbrand{display:flex;align-items:center;gap:9px;color:var(--text-2)}
.site-fmark{width:24px;height:24px;border-radius:6px;background:var(--accent);color:var(--on-accent);display:grid;place-items:center;font-family:var(--serif);font-weight:600;font-size:13px}
.site-flink{color:var(--accent);font-weight:600}
.site-flink:hover{color:var(--accent-deep)}
@media(max-width:640px){ .site-links{display:none} }