/* Base (global) styles extracted from style.css.
   NOTE: This file is intentionally minimal to keep initial CSS small.
   Tool/page-specific CSS is loaded via per-page bundles.
*/

:root{
  --bg:#0b1220;
  --bg2:#0a1628;
  --surface:#0f1b2d;
  --surface2:#101f34;
  --accent:#7df9ff;
  --accent2:#5ea0ff;
  --accent3:#56f3c5;
  --text:#e6eefc;
  --muted:#aab7cf;
  --border:rgba(255,255,255,.10);
  --blue:#8ab4f8;
  --blue2:#5ea0ff;
  --shadow:0 1px 2px rgba(0,0,0,.35), 0 12px 36px rgba(0,0,0,.35);
  --radius:14px;
  --glow:0 0 0 1px rgba(125,249,255,.20), 0 0 24px rgba(94,160,255,.22);
  --font-sans:"Space Grotesk","Sora","Segoe UI",sans-serif;
  --font-head:"Space Grotesk","Sora","Segoe UI",sans-serif;
  --mono:"JetBrains Mono","Fira Code",ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
  --grid-line:rgba(138,180,248,.08);
  --scanline:rgba(7,10,16,.35);
  --bg-grad-1:rgba(110,243,214,.16);
  --bg-grad-2:rgba(255,178,118,.16);
  --bg-grad-3:rgba(94,160,255,.18);
  --bg-grad-4:#050a12;
  --bg-grad-5:#0a1526;
  --bg-grad-6:#0b1220;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: var(--font-sans);
  color:var(--text);
  background:
    radial-gradient(820px 520px at 8% -10%, var(--bg-grad-1), transparent 60%),
    radial-gradient(720px 520px at 92% 6%, var(--bg-grad-2), transparent 62%),
    radial-gradient(880px 680px at 50% 112%, var(--bg-grad-3), transparent 70%),
    linear-gradient(180deg, var(--bg-grad-4) 0%, var(--bg-grad-5) 55%, var(--bg-grad-6) 100%);
  line-height:1.6;
  position:relative;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image: linear-gradient(transparent 0%, var(--scanline) 50%, transparent 100%);
  background-size:100% 4px;
  opacity:.3;
  pointer-events:none;
  z-index:-1;
}

/* Background layers */
.sg-bg{position:fixed; inset:0; z-index:-2; pointer-events:none; overflow:hidden;}
.sg-grid{
  position:absolute;
  inset:-20%;
  background-image:
    linear-gradient(transparent 0%, transparent 96%, rgba(125,249,255,.1) 100%),
    linear-gradient(90deg, transparent 0%, transparent 96%, rgba(125,249,255,.1) 100%);
  background-size:52px 52px;
  opacity:.2;
  transform: perspective(900px) rotateX(60deg) translateY(-12%);
  transform-origin: top;
  animation: gridDrift 36s linear infinite;
}
.sg-orbits{
  position:absolute;
  inset:0;
  background:
    radial-gradient(520px 280px at 18% 12%, rgba(125,249,255,.16), transparent 70%),
    radial-gradient(640px 360px at 82% 14%, rgba(255,178,118,.2), transparent 70%),
    radial-gradient(920px 640px at 55% 98%, rgba(94,160,255,.16), transparent 70%);
  opacity:.85;
  animation: orbitShift 18s ease-in-out infinite alternate;
}
.sg-dust{
  position:absolute;
  inset:0;
  background-image: radial-gradient(rgba(255,255,255,.14) 1px, transparent 1px);
  background-size:140px 140px;
  opacity:.12;
  animation: dustDrift 40s linear infinite;
}
.sg-vignette{position:absolute; inset:0; background: radial-gradient(circle at 50% 45%, rgba(0,0,0,0) 0%, rgba(0,0,0,.35) 60%, rgba(0,0,0,.6) 100%);}

@keyframes gridDrift{from{transform: perspective(900px) rotateX(60deg) translateY(-12%) translateX(0)}to{transform: perspective(900px) rotateX(60deg) translateY(-12%) translateX(-120px)}}
@keyframes orbitShift{from{transform: translateY(0)}to{transform: translateY(-6px)}}
@keyframes dustDrift{from{transform: translateX(0)}to{transform: translateX(-140px)}}

/* Layout */
.container{max-width:1120px; margin:0 auto; padding:0 20px}

/* Links */
a{color:var(--blue); text-decoration:none}
a:hover{color:var(--blue2)}
a:focus-visible{outline:2px solid rgba(125,249,255,.55); outline-offset:2px; border-radius:10px}

/* Topbar */
.topbar{position:sticky; top:0; z-index:10; backdrop-filter: blur(10px); background:rgba(11,18,32,.72); border-bottom:1px solid var(--border);}
.topbar-inner{display:flex; align-items:center; justify-content:space-between; padding:14px 0; gap:14px}
.brand{font-weight:700; letter-spacing:.1px; color:var(--text); font-family:var(--font-head);}
.tagline{color:rgba(139,147,167,.92); font-size:12px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:320px;}
.nav{display:flex; gap:18px; flex:1; justify-content:center}
.nav a{color:var(--muted)}
.nav a:hover{color:var(--text)}
.langs{display:flex; gap:8px; align-items:center}
.lang-pill{display:inline-flex; align-items:center; justify-content:center; min-width:44px; height:30px; padding:0 10px; border-radius:999px; border:1px solid rgba(255,255,255,.10); background:rgba(255,255,255,.03); color:var(--muted); text-transform:lowercase;}
.lang-pill:hover{color:var(--text); border-color:rgba(138,180,248,.35)}
.lang-pill.active{color:var(--text); border-color:rgba(138,180,248,.45); background:rgba(138,180,248,.10);}

/* Hero */
.hero{position:relative; overflow:hidden; padding:34px 26px; margin:22px 0 12px; border-radius:calc(var(--radius) + 2px);
  background: radial-gradient(320px 120px at 12% 0%, rgba(125,249,255,.16), transparent 68%), linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.10); box-shadow: var(--shadow);
}
.hero-badge{display:inline-flex; gap:8px; align-items:center; padding:6px 10px; border-radius:999px; background:rgba(138,180,248,.10); border:1px solid rgba(138,180,248,.22); color:var(--blue); font-size:12px; letter-spacing:.2px;}
.hero-title{margin:12px 0 0; font-family:var(--font-head); font-size:42px; line-height:1.12; letter-spacing:.2px;}
.hero-subtitle{margin:10px 0 0; color:var(--muted)}

/* Buttons */
.btn{display:inline-flex; align-items:center; gap:8px; padding:9px 14px; border-radius:999px;
  background:linear-gradient(120deg, rgba(125,249,255,.22), rgba(94,160,255,.16) 50%, rgba(15,27,45,.5));
  border:1px solid rgba(125,249,255,.32); color:var(--text); font-weight:600;
  box-shadow: 0 0 0 1px rgba(125,249,255,.08), 0 10px 20px rgba(0,0,0,.35);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.btn:hover{border-color:rgba(125,249,255,.55); box-shadow: 0 0 0 1px rgba(125,249,255,.18), 0 16px 28px rgba(0,0,0,.4); transform: translateY(-1px);}
.btn-small{padding:7px 12px; font-size:12px}
.btn-ghost{background:rgba(255,255,255,.03); border:1px solid rgba(255,255,255,.18); color:var(--muted); box-shadow:none;}
.btn-ghost:hover{color:var(--text); border-color:rgba(138,180,248,.35)}

/* Paper */
.paper{margin:22px 0 40px; padding:22px 22px; border-radius:calc(var(--radius) + 2px);
  background: radial-gradient(320px 140px at 8% 0%, rgba(125,249,255,.12), transparent 70%), linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.025));
  border:1px solid rgba(255,255,255,.10); box-shadow: var(--shadow); backdrop-filter: blur(6px);
}

/* Prose basics */
.prose{color:var(--text)}
.prose h1,.prose h2,.prose h3{margin:20px 0 10px; line-height:1.25}
.prose h2{padding-top:8px; border-top:1px solid rgba(255,255,255,.06)}
.prose p{margin:10px 0}
.prose ul,.prose ol{padding-left:20px}
.prose img{max-width:100%; border-radius:14px; border:1px solid var(--border)}
.prose blockquote{margin:14px 0; padding:10px 14px; border-left:3px solid rgba(138,180,248,.42); background:rgba(138,180,248,.08); color:var(--text); border-radius:12px;}
.prose hr{border:0; height:1px; background:rgba(255,255,255,.10); margin:22px 0}

/* Footer */
.footer{border-top:1px solid var(--border); color:var(--muted); padding:18px 0 28px}
.footer-inner{display:flex; align-items:center; justify-content:space-between; gap:14px}
.footer-links{display:flex; gap:12px}
.footer a{color:var(--muted)}
.footer a:hover{color:var(--text)}

html{scroll-behavior:smooth}

/* Subtle page transition for internal navigation (MPA) */
body{transition: opacity 120ms ease, transform 180ms ease}
body.page-enter{opacity:0; transform: translateY(8px)}
body.page-leave{opacity:0; transform: translateY(-6px)}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  body{transition:none}
  body.page-enter,body.page-leave{opacity:1; transform:none}
}

@media (max-width:720px){
  .topbar-inner{flex-wrap:wrap; justify-content:center; padding:12px 0}
  .brand{width:100%; text-align:center}
  .tagline{width:100%; max-width:none; text-align:center; opacity:.9}
  .nav{width:100%; justify-content:center; flex-wrap:wrap}
  .langs{width:100%; justify-content:center; flex-wrap:wrap}
  .hero{padding:24px 18px}
  .hero-title{font-size:30px}
}