/* antdev — modern UI skin
   Pure CSS (no build step). Designed to work with the existing DOM:
   #main > #menu + #app and .topnav links injected by app.js
*/

:root{
  --bg0: #070a14;
  --bg1: #0b1020;
  --card: rgba(255,255,255,.06);
  --card2: rgba(255,255,255,.04);
  --stroke: rgba(255,255,255,.10);
  --stroke2: rgba(255,255,255,.14);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.72);
  --muted2: rgba(255,255,255,.56);

  --brand: #60a5fa;   /* blue-400 */
  --brand2: #34d399;  /* emerald-400 */
  --danger: #fb7185;  /* rose-400 */

  --shadow: 0 20px 50px rgba(0,0,0,.35);
  --r-sm: 12px;
  --r-md: 16px;
  --r-lg: 22px;

  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

@media (prefers-color-scheme: light){
  :root{
    --bg0:#f6f7fb;
    --bg1:#ffffff;
    --card: rgba(255,255,255,.70);
    --card2: rgba(255,255,255,.55);
    --stroke: rgba(2,6,23,.10);
    --stroke2: rgba(2,6,23,.14);
    --text: rgba(2,6,23,.92);
    --muted: rgba(2,6,23,.70);
    --muted2: rgba(2,6,23,.52);
    --shadow: 0 20px 50px rgba(2,6,23,.10);
  }
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  line-height: 1.55;
  letter-spacing: .01em;

  /* subtle “mesh” background */
  background:
    radial-gradient(1200px 600px at 20% 10%, color-mix(in oklab, var(--brand) 30%, transparent), transparent 55%),
    radial-gradient(900px 500px at 80% 25%, color-mix(in oklab, var(--brand2) 20%, transparent), transparent 55%),
    radial-gradient(1000px 600px at 40% 90%, color-mix(in oklab, #f59e0b 14%, transparent), transparent 55%),
    linear-gradient(180deg, var(--bg0), var(--bg0));
}

a{ color: color-mix(in oklab, var(--brand) 92%, white); text-decoration: none; }
a:hover{ text-decoration: underline; }

#main{
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 16px 56px;
}

/* --- NAV --- */
#menu{
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 10px 0 16px;
  backdrop-filter: blur(10px);
}

.topnav{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;

  border: 1px solid var(--stroke);
  background: var(--card);
  box-shadow: var(--shadow);
  border-radius: var(--r-lg);

  padding: 10px;
}

.topnav a{
  display: inline-flex;
  align-items: center;
  gap: 10px;

  padding: 10px 12px;
  border-radius: 999px;

  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);

  font-weight: 650;
  font-size: 13px;
  text-transform: none;
  letter-spacing: .01em;

  transition: background .15s ease, border-color .15s ease, color .15s ease, transform .15s ease;
}

.topnav a:hover{
  text-decoration: none;
  color: var(--text);
  background: color-mix(in oklab, var(--card2) 80%, transparent);
  border-color: var(--stroke);
}

.topnav a:active{ transform: translateY(1px); }

/* simple “active” style based on hash */
.topnav a[aria-current="page"]{
  color: var(--text);
  background: color-mix(in oklab, var(--brand) 18%, transparent);
  border-color: color-mix(in oklab, var(--brand) 35%, var(--stroke));
}

/* --- CONTENT CARD --- */
#app{
  margin-top: 14px;
  border: 1px solid var(--stroke);
  background: var(--card);
  box-shadow: var(--shadow);
  border-radius: var(--r-lg);
  padding: 22px 22px;
}

h1{
  margin: 0 0 10px;
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: -0.02em;
  font-weight: 850;
}

h2{
  margin: 18px 0 10px;
  font-size: 16px;
  font-weight: 800;
}

p{
  margin: 10px 0;
  color: var(--muted);
}

/* make link lists feel more “app-like” */
#app p > a{
  display: inline-flex;
  align-items: center;
  gap: 10px;

  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: color-mix(in oklab, var(--card2) 75%, transparent);
  color: var(--text);

  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}

#app p > a:hover{
  text-decoration: none;
  border-color: var(--stroke2);
  background: color-mix(in oklab, var(--brand) 12%, var(--card2));
}

#app p > a:active{ transform: translateY(1px); }

/* code-ish lines look better */
#app p:has(code),
#app p code{
  font-family: var(--mono);
  font-size: 13px;
}

#app p{ overflow-wrap: anywhere; }

@media (max-width: 520px){
  #app{ padding: 18px 16px; }
  .topnav{ padding: 10px; }
  .topnav a{ padding: 10px 10px; }
}