/* ============================== Reset / base ============================== */
*{ box-sizing:border-box; margin:0; padding:0; }
:root{
  --bg:#05050c;
  --bg-2:#0a0a16;
  --panel:#0d0d1c;
  --panel-2:#12122448;
  --line:#ffffff14;
  --line-2:#ffffff24;
  --txt:#f2f1f8;
  --txt-dim:#a7a4c2;
  --txt-faint:#6f6c8e;
  --mag:#ff2d78;
  --cyan:#2fd4ff;
  --violet:#7b3ff2;
  --amber:#ffb020;
  --radius:18px;
  --pad:28px; /* page-level horizontal padding; shrinks on small screens */
  --mono:'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --sans:'Helvetica Neue', Helvetica, system-ui, -apple-system, Arial, sans-serif;
}
html,body{ background:var(--bg); color:var(--txt); font-family:var(--sans); -webkit-font-smoothing:antialiased; }
body{ overflow-x:hidden; }
a{ color:inherit; text-decoration:none; }
::selection{ background:var(--mag); color:#fff; }

/* subtle starfield-ish vignette behind everything */
body::before{
  content:""; position:fixed; inset:0; z-index:-1; pointer-events:none;
  background:
    radial-gradient(1200px 700px at 78% -8%, #2a0f4a55, transparent 60%),
    radial-gradient(900px 600px at 0% 100%, #1a0a3a55, transparent 55%),
    var(--bg);
}

/* ============================== Top bar ============================== */
.topbar{
  position:sticky; top:0; z-index:40;
  display:flex; align-items:center; justify-content:space-between; gap:14px;
  padding:16px var(--pad);
  background:linear-gradient(180deg, #05050cf0, #05050c40 70%, transparent);
  backdrop-filter:blur(8px);
}
.brand{ display:flex; align-items:center; gap:10px; font-weight:700; letter-spacing:-.02em; font-size:18px; }
.brand .dot{ width:9px; height:9px; border-radius:50%; background:var(--mag); box-shadow:0 0 14px var(--mag); }
.brand .sub{ color:var(--txt-faint); font-weight:500; font-size:12px; font-family:var(--mono); letter-spacing:.04em; margin-left:4px; }
.nav{ display:flex; align-items:center; gap:26px; font-size:13.5px; color:var(--txt-dim); }
.nav a{ transition:color .15s; }
.nav a:hover{ color:var(--txt); }
.nav .ghub{
  display:inline-flex; align-items:center; gap:7px;
  border:1px solid var(--line-2); border-radius:999px; padding:7px 14px; color:var(--txt);
}
.nav .ghub:hover{ border-color:var(--mag); }

/* ============================== Hero ============================== */
.hero{ position:relative; height:74vh; min-height:520px; overflow:hidden; }
.hero canvas{ position:absolute; inset:0; width:100%; height:100%; display:block; }
.hero .scrim{
  position:absolute; inset:0;
  background:linear-gradient(180deg, #05050c66 0%, transparent 28%, #05050c10 60%, var(--bg) 100%);
  pointer-events:none;
}
.hero .inner{
  position:absolute; left:0; right:0; bottom:0; padding:0 var(--pad) 54px;
  display:flex; flex-direction:column; gap:18px; pointer-events:none;
}
.hero .eyebrow{
  display:inline-flex; align-items:center; gap:9px; align-self:flex-start;
  font-family:var(--mono); font-size:11px; letter-spacing:.22em; color:var(--cyan);
  border:1px solid var(--cyan); border-radius:999px; padding:6px 13px;
  background:#2fd4ff14;
}
.hero h1{
  font-size:clamp(38px, 7vw, 92px); line-height:.95; letter-spacing:-.035em; font-weight:700;
  max-width:14ch; text-wrap:balance;
}
.hero h1 em{ font-style:normal; background:linear-gradient(96deg,var(--mag),var(--violet) 45%,var(--cyan)); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero p{ color:var(--txt-dim); font-size:clamp(15px,1.7vw,19px); max-width:46ch; }
.hero .hint{ font-family:var(--mono); font-size:11.5px; color:var(--txt-faint); letter-spacing:.05em; }

/* ============================== Section / grid ============================== */
.wrap{ max-width:1320px; margin:0 auto; padding:0 var(--pad); }
.section-head{
  display:flex; align-items:flex-end; justify-content:space-between; gap:24px;
  margin:64px 0 28px;
}
.section-head h2{ font-size:clamp(24px,3vw,34px); letter-spacing:-.025em; font-weight:700; }
.section-head .count{ font-family:var(--mono); color:var(--txt-faint); font-size:12.5px; letter-spacing:.06em; }
.section-head p{ color:var(--txt-dim); font-size:14px; margin-top:6px; max-width:52ch; }

.filters{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:26px; }
.chip-filter{
  font-family:var(--mono); font-size:11px; letter-spacing:.08em; color:var(--txt-dim);
  border:1px solid var(--line-2); background:transparent; border-radius:999px;
  padding:7px 13px; cursor:pointer; transition:.15s; text-transform:uppercase;
}
.chip-filter:hover{ color:var(--txt); border-color:var(--line-2); }
.chip-filter.active{ color:#05050c; background:var(--txt); border-color:var(--txt); }

.grid{
  display:grid; grid-template-columns:repeat(3, 1fr); gap:20px;
}

/* ============================== Card ============================== */
.card{
  position:relative; border:1px solid var(--line); border-radius:var(--radius);
  overflow:hidden; background:var(--bg-2); cursor:pointer;
  transition:transform .35s cubic-bezier(.2,.7,.2,1), border-color .25s, box-shadow .35s;
}
.card:hover{ transform:translateY(-4px); border-color:var(--line-2); box-shadow:0 22px 50px -20px #000, 0 0 0 1px #ffffff10; }
.card .stage{ position:relative; aspect-ratio:16/10; overflow:hidden; }
.card canvas{ position:absolute; inset:0; width:100%; height:100%; display:block; }
.card .grad{
  position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(180deg, #05050c00 40%, #05050cc8 100%);
}
.card .tag{
  position:absolute; top:12px; left:12px; z-index:2;
  font-family:var(--mono); font-size:9.5px; letter-spacing:.16em; color:var(--txt);
  border:1px solid #ffffff33; border-radius:999px; padding:5px 10px;
  background:#0a0a16aa; backdrop-filter:blur(6px);
}
.card .swatches{ position:absolute; top:12px; right:12px; z-index:2; display:flex; gap:5px; }
.card .swatches i{ width:11px; height:11px; border-radius:50%; box-shadow:0 0 0 1px #00000060, 0 0 8px currentColor; }
.card .meta{ position:absolute; left:14px; right:14px; bottom:13px; z-index:2; }
.card .meta h3{ font-size:17px; letter-spacing:-.02em; font-weight:600; }
.card .meta .blurb{ color:var(--txt-dim); font-size:11.5px; margin-top:3px; line-height:1.45; opacity:0; max-height:0; transition:.3s; }
.card:hover .meta .blurb{ opacity:1; max-height:48px; }
.card .props{ display:flex; flex-wrap:wrap; gap:6px; margin-top:9px; }
.card .props span{
  font-family:var(--mono); font-size:9.5px; letter-spacing:.04em; color:var(--txt-dim);
  border:1px solid var(--line); border-radius:6px; padding:3px 7px; background:#ffffff08;
}
.card .open-cue{
  position:absolute; bottom:13px; right:14px; z-index:3;
  font-family:var(--mono); font-size:10px; color:var(--txt); letter-spacing:.05em;
  display:flex; align-items:center; gap:6px; opacity:0; transform:translateY(4px); transition:.25s;
}
.card:hover .open-cue{ opacity:.85; transform:none; }

/* ============================== Detail modal ============================== */
.modal{
  position:fixed; inset:0; z-index:80; display:none;
  background:#05050cd8; backdrop-filter:blur(10px);
}
.modal.open{ display:grid; grid-template-columns:1fr 360px; }
.modal .view{ position:relative; overflow:hidden; }
.modal .view canvas{ position:absolute; inset:0; width:100%; height:100%; display:block; }
.modal .view .toplabel{
  position:absolute; top:22px; left:24px; z-index:2; display:flex; align-items:center; gap:12px;
}
.modal .view .toplabel-tag{
  font-family:var(--mono); font-size:10px; letter-spacing:.16em; color:var(--cyan);
  border:1px solid var(--cyan); border-radius:999px; padding:5px 11px; background:#2fd4ff14;
}
.modal .view h2{ font-size:clamp(28px,4vw,46px); letter-spacing:-.03em; font-weight:700; position:absolute; left:24px; bottom:22px; z-index:2; text-shadow:0 2px 30px #000; }

.modal .side{
  border-left:1px solid var(--line); background:var(--panel);
  display:flex; flex-direction:column; min-height:0;
}
.modal .side .shead{ padding:20px 20px 14px; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; align-items:flex-start; gap:12px; }
.modal .side .shead h4{ font-size:15px; font-weight:600; letter-spacing:-.01em; }
.modal .side .shead p{ color:var(--txt-dim); font-size:12px; margin-top:5px; line-height:1.5; }
.modal .close{
  width:34px; height:34px; flex:none; border-radius:50%; border:1px solid var(--line-2);
  background:transparent; color:var(--txt); font-size:18px; cursor:pointer; line-height:1; transition:.15s;
}
.modal .close:hover{ border-color:var(--mag); color:var(--mag); }
.gui-host{ padding:14px 16px 4px; }
.gui-host .lbl{ font-family:var(--mono); font-size:10px; letter-spacing:.14em; color:var(--txt-faint); text-transform:uppercase; margin-bottom:8px; }

.code{ margin:6px 16px 16px; border:1px solid var(--line); border-radius:12px; overflow:hidden; background:#07070f; display:flex; flex-direction:column; min-height:0; flex:1; }
.code .chead{ display:flex; align-items:center; justify-content:space-between; padding:9px 12px; border-bottom:1px solid var(--line); }
.code .chead .lbl{ font-family:var(--mono); font-size:10px; letter-spacing:.14em; color:var(--txt-faint); }
.code .copy{ font-family:var(--mono); font-size:10px; color:var(--cyan); background:transparent; border:1px solid var(--line-2); border-radius:6px; padding:4px 9px; cursor:pointer; transition:.15s; }
.code .copy:hover{ border-color:var(--cyan); }
.code pre{ margin:0; padding:12px; overflow:auto; font-family:var(--mono); font-size:11px; line-height:1.55; color:#cfd6e8; }
.code pre .k{ color:#ff79c6; } .code pre .t{ color:#8be9fd; } .code pre .n{ color:#ffb86c; } .code pre .c{ color:#6272a4; }

/* ============================== Global GUI host ============================== */
#global-gui{ position:fixed; top:78px; right:18px; z-index:50; }
#global-gui .cap{
  font-family:var(--mono); font-size:9.5px; letter-spacing:.16em; color:var(--txt-faint);
  text-align:right; margin-bottom:6px; text-transform:uppercase;
}

/* lil-gui theme override */
.lil-gui{
  --background-color:#0c0c1a; --widget-color:#1a1a2e; --text-color:#dad8ea;
  --title-background-color:#101022; --focus-color:#ff2d78; --hover-color:#23233e;
  --number-color:#2fd4ff; --string-color:#ffb020;
  --font-family:var(--mono); --font-size:11px; --width:248px;
  --widget-height:22px; --padding:8px; --spacing:5px;
  border:1px solid var(--line-2); border-radius:12px; overflow:hidden;
  box-shadow:0 18px 50px -18px #000;
}
.lil-gui.root>.title{ letter-spacing:.08em; font-weight:600; }

/* ============================== Footer ============================== */
.foot{
  margin:80px 0 0; border-top:1px solid var(--line); padding:34px var(--pad) 60px;
  display:flex; flex-wrap:wrap; gap:18px; align-items:center; justify-content:space-between;
  color:var(--txt-faint); font-size:12.5px;
}
.foot a{ color:var(--txt-dim); } .foot a:hover{ color:var(--txt); }
.foot .mono{ font-family:var(--mono); font-size:11px; letter-spacing:.04em; }

/* ============================== Responsive ============================== */
/* Breakpoints, widest → narrowest. Layout is fluid between these; the rules
   below just re-flow the grid, the floating page-fx panel and the detail
   modal so the page stays usable from 4K desktops down to small phones. */

/* Large desktops — widen the content rail and add a 4th column so cards
   don't balloon on very wide screens. */
@media(min-width:1700px){
  .wrap{ max-width:1600px; }
  .grid{ grid-template-columns:repeat(4, 1fr); }
}

/* Small desktop / large laptop */
@media(max-width:1100px){
  .hero{ height:68vh; }
}

/* Tablet landscape — two-column grid, trim the floating page-fx panel. */
@media(max-width:980px){
  .grid{ grid-template-columns:repeat(2, 1fr); }
  #global-gui{ top:72px; right:14px; }
  #global-gui .lil-gui.root{ --width:208px; }
}

/* Detail modal: below this width the side-by-side split is too cramped, so
   stack the live view over the controls + source and let the modal scroll. */
@media(max-width:860px){
  .modal.open{ display:block; grid-template-columns:none; overflow-y:auto; -webkit-overflow-scrolling:touch; }
  .modal .view{ height:46vh; min-height:300px; }
  .modal .view .toplabel{ top:16px; left:18px; }
  .modal .view h2{ left:18px; bottom:18px; }
  .modal .side{
    display:flex; border-left:0; border-top:1px solid var(--line);
    /* let children shrink so the long code lines scroll inside their <pre>
       instead of stretching the modal wider than the viewport */
    min-width:0;
  }
  .modal .side .code{ flex:none; }
  .modal .side .code pre{ max-height:none; }
  /* lil-gui is built with a fixed 320px width in JS — let it fill the rail */
  .gui-host .lil-gui.root{ width:100% !important; --width:100% !important; max-width:100%; }
}

/* Tablet portrait / phablet */
@media(max-width:768px){
  .hero{ height:64vh; min-height:460px; }
  .hero .inner{ padding-bottom:42px; }
  #global-gui .lil-gui.root{ --width:188px; }
  .section-head{ margin:48px 0 22px; }
}

/* Phones — single column, compact chrome. */
@media(max-width:640px){
  :root{ --pad:18px; }
  .grid{ grid-template-columns:1fr; gap:14px; }
  .hero{ height:58vh; min-height:400px; }

  /* top bar: drop the sub-label + in-page anchor, tighten the nav so the
     brand and remaining links stay on one line */
  .brand{ font-size:16px; }
  .brand .sub{ display:none; }
  .nav{ gap:16px; font-size:13px; }
  .nav a[href^="#"]{ display:none; }
  .nav .ghub{ padding:6px 11px; }

  /* eyebrow pill overflows on narrow screens — shrink type + tracking */
  .hero .eyebrow{ font-size:9.5px; letter-spacing:.1em; padding:5px 11px; line-height:1.5; }

  /* the page-fx panel covers the whole hero on a phone; hide it — per-shader
     uniforms remain available inside each card's modal */
  #global-gui{ display:none; }

  /* section head stacks: title block above the count */
  .section-head{ flex-direction:column; align-items:flex-start; gap:8px; margin:40px 0 20px; }

  .foot{ gap:12px; }
}

/* Small phones */
@media(max-width:400px){
  :root{ --pad:14px; }
  .nav{ gap:12px; }
}