/* SPDX-License-Identifier: GPL-2.0-or-later */
/* vulinx.org. The colours of the VULINX console: warm browns, cream, amber.
 * No web fonts, no frameworks, no third-party requests. */
:root {
  --ground: #140e0b; --surface: #1d1612; --raised: #2a201a; --line: #3b2e24; --line-soft: #2c221b;
  --text: #f4ebdf; --muted: #c8b8a2; --faint: #9c8a75;
  --accent: #e09a3e; --accent-strong: #f5bd6e; --ember: #ff7a1a; --ink: #1b1410;
  --phosphor: #8dffb0; --phosphor-dim: #4fae72;
  --max: 1160px; --pad: max(22px, calc((100vw - var(--max)) / 2));
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Inter", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--ground); color: var(--text); font: 17px/1.65 var(--sans); overflow-x: hidden; }
::selection { background: var(--accent); color: var(--ink); }
a { color: var(--accent-strong); text-decoration-thickness: 1px; text-underline-offset: 3px; transition: color .15s; }
a:hover { color: #ffe0b0; }
code, pre { font-family: var(--mono); font-size: .86em; }
code { background: var(--raised); padding: .12em .4em; border-radius: 5px; color: var(--text); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--ink); padding: 8px 14px; border-radius: 6px; z-index: 99; }
.skip:focus { left: 12px; }
:focus-visible { outline: 2px solid var(--accent-strong); outline-offset: 3px; border-radius: 4px; }

/* A grid that fades out, and two embers behind the hero. */
.backdrop {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60vw 46vw at 78% -6%, rgba(255, 122, 26, .20), transparent 62%),
    radial-gradient(48vw 40vw at 4% 18%, rgba(224, 154, 62, .11), transparent 60%),
    linear-gradient(rgba(240, 183, 104, .045) 1px, transparent 1px) 0 0 / 56px 56px,
    linear-gradient(90deg, rgba(240, 183, 104, .045) 1px, transparent 1px) 0 0 / 56px 56px,
    var(--ground);
  -webkit-mask-image: linear-gradient(#000 0, #000 46%, transparent 92%);
          mask-image: linear-gradient(#000 0, #000 46%, transparent 92%);
}

/* ---------------------------------------------------------------- header */
.top {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px var(--pad); background: rgba(20, 14, 11, .72); backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .2s, background .2s;
}
.top.scrolled { border-bottom-color: var(--line); background: rgba(20, 14, 11, .9); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 800; letter-spacing: .14em; font-size: .95rem; }
.brand img { filter: drop-shadow(0 2px 8px rgba(255, 122, 26, .45)); }
.top nav { display: flex; align-items: center; gap: 26px; font-size: .92rem; }
.top nav a { color: var(--muted); text-decoration: none; position: relative; }
.top nav a:not(.cta)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -6px; height: 2px; background: var(--accent); transition: right .2s; }
.top nav a:not(.cta):hover { color: var(--text); }
.top nav a:not(.cta):hover::after { right: 0; }
.top nav a.cta { color: var(--ink); background: linear-gradient(135deg, var(--accent-strong), var(--accent)); padding: 7px 15px; border-radius: 999px; font-weight: 700; }
.top nav a.cta:hover { filter: brightness(1.08); }

/* ------------------------------------------------------------------ hero */
.hero { padding: clamp(48px, 9vh, 110px) var(--pad) 70px; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: 54px; align-items: center; }
.kicker { display: inline-flex; align-items: center; gap: 10px; margin: 0 0 22px; padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .82rem; letter-spacing: .04em; background: rgba(42, 32, 26, .6); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--phosphor); box-shadow: 0 0 0 0 rgba(141, 255, 176, .6); animation: pulse 2.4s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 9px rgba(141, 255, 176, 0); } 100% { box-shadow: 0 0 0 0 rgba(141, 255, 176, 0); } }
h1 { font-size: clamp(2.5rem, 6.1vw, 4.7rem); line-height: 1.02; letter-spacing: -.035em; margin: 0 0 24px; font-weight: 800; }
.grad { background: linear-gradient(100deg, #ffd9a0 0%, var(--accent) 42%, var(--ember) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(1.05rem, 1.35vw, 1.2rem); color: var(--muted); max-width: 35em; margin: 0 0 32px; }
.lead strong { color: var(--text); font-weight: 650; }
.actions, .repos { display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 26px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 12px; font-weight: 700; text-decoration: none; border: 1px solid var(--line); color: var(--text); background: var(--raised); transition: transform .15s, box-shadow .2s, border-color .2s, filter .2s; }
.btn:hover { transform: translateY(-2px); color: var(--text); border-color: var(--accent); }
.btn.primary { color: var(--ink); border-color: transparent; background: linear-gradient(135deg, var(--accent-strong), var(--accent) 55%, var(--ember)); box-shadow: 0 10px 34px -10px rgba(255, 122, 26, .7); }
.btn.primary:hover { color: var(--ink); filter: brightness(1.07); box-shadow: 0 16px 40px -10px rgba(255, 122, 26, .85); }
.btn.ghost { background: transparent; }
.expand { margin: 0; color: var(--faint); font-size: .9rem; letter-spacing: .02em; }
.expand b { color: var(--accent-strong); font-weight: 800; }

.hero-console { position: relative; }
.screen { border-radius: 16px; border: 1px solid var(--line); background: #0c0806; overflow: hidden; box-shadow: 0 40px 90px -30px rgba(0, 0, 0, .9), 0 0 0 1px rgba(255, 255, 255, .03) inset, 0 0 90px -30px rgba(255, 122, 26, .45); transform: perspective(1400px) rotateY(-7deg) rotateX(3deg); transition: transform .5s cubic-bezier(.2, .7, .2, 1); }
.hero-console:hover .screen { transform: perspective(1400px) rotateY(-2deg) rotateX(1deg); }
.screen-bar { display: flex; align-items: center; gap: 14px; padding: 11px 16px; background: #17100c; border-bottom: 1px solid var(--line-soft); }
.lights { display: flex; gap: 7px; } .lights i { width: 11px; height: 11px; border-radius: 50%; background: #3b2e24; } .lights i:first-child { background: var(--ember); }
.screen-title { font: 600 .78rem var(--mono); color: var(--faint); letter-spacing: .04em; }
.screen-body { margin: 0; padding: 18px 18px 20px; min-height: 330px; max-height: 330px; overflow: hidden; border: 0; border-radius: 0; background: repeating-linear-gradient(rgba(141, 255, 176, .028) 0 2px, transparent 2px 4px), #0c0806; color: var(--phosphor); font: .8rem/1.62 var(--mono); text-shadow: 0 0 9px rgba(141, 255, 176, .42); white-space: pre-wrap; }
.screen-body .dimline { color: var(--phosphor-dim); } .screen-body .amb { color: var(--accent-strong); text-shadow: 0 0 9px rgba(245, 189, 110, .45); }
.cursor { display: inline-block; width: .62em; height: 1.05em; vertical-align: -.16em; background: var(--phosphor); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.linx { position: absolute; right: -26px; bottom: -42px; width: 124px; height: auto; filter: drop-shadow(0 14px 24px rgba(0, 0, 0, .7)); animation: float 6s ease-in-out infinite; }
@keyframes float { 50% { transform: translateY(-9px) rotate(-2deg); } }

/* ----------------------------------------------------------------- stats */
.stats { margin: 0 var(--pad); display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(180deg, rgba(42, 32, 26, .75), rgba(29, 22, 18, .75)); overflow: hidden; }
.stats div { padding: 26px 24px; border-left: 1px solid var(--line-soft); } .stats div:first-child { border-left: 0; }
.stats b { display: block; font-size: clamp(1.7rem, 3vw, 2.5rem); line-height: 1.05; letter-spacing: -.03em; background: linear-gradient(120deg, #ffe2b3, var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats span { display: block; margin-top: 8px; color: var(--faint); font-size: .86rem; line-height: 1.4; }

/* ----------------------------------------------------------------- bands */
.band { padding: clamp(70px, 11vh, 130px) var(--pad); position: relative; }
.band.alt { background: linear-gradient(180deg, var(--surface), rgba(29, 22, 18, .55)); border-block: 1px solid var(--line-soft); }
.eyebrow { margin: 0 0 14px; color: var(--accent); font: 700 .78rem var(--mono); letter-spacing: .18em; text-transform: uppercase; }
h2 { font-size: clamp(1.9rem, 4vw, 3.1rem); line-height: 1.08; letter-spacing: -.03em; margin: 0 0 46px; font-weight: 800; max-width: 17em; }
h3 { font-size: 1.12rem; margin: 0 0 8px; letter-spacing: -.01em; }
.cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.cols p, .machine p, .cell p, .steps p { color: var(--muted); margin: 0 0 12px; }
.num { display: block; font: 700 .8rem var(--mono); color: var(--accent); margin-bottom: 14px; letter-spacing: .1em; }
.cols > div { padding-top: 22px; border-top: 1px solid var(--line); }

.machines { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.machine { position: relative; padding: 34px; border-radius: 20px; border: 1px solid var(--line); background: radial-gradient(120% 90% at 0% 0%, rgba(141, 255, 176, .07), transparent 55%), var(--raised); overflow: hidden; transition: transform .25s, border-color .25s; }
.machine:nth-child(2) { background: radial-gradient(120% 90% at 100% 0%, rgba(255, 122, 26, .13), transparent 55%), var(--raised); }
.machine:hover { transform: translateY(-4px); border-color: var(--accent); }
.machine header { display: flex; flex-direction: column; gap: 14px; margin-bottom: 14px; }
.machine h3 { font-size: 1.55rem; letter-spacing: -.02em; }
.tag { align-self: flex-start; font: 700 .74rem var(--mono); letter-spacing: .12em; padding: 5px 11px; border-radius: 999px; color: var(--phosphor); border: 1px solid rgba(141, 255, 176, .35); background: rgba(141, 255, 176, .07); }
.tag.amber { color: var(--accent-strong); border-color: rgba(245, 189, 110, .4); background: rgba(245, 189, 110, .08); }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 22px 0 0; }
.chips li { font: .76rem var(--mono); color: var(--muted); padding: 5px 10px; border-radius: 8px; border: 1px solid var(--line); background: rgba(20, 14, 11, .55); }

.bento { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.cell { grid-column: span 1; padding: 26px; border-radius: 18px; border: 1px solid var(--line); background: var(--raised); transition: transform .25s, border-color .25s, background .25s; }
.cell.wide { grid-column: span 2; }
.cell:hover { transform: translateY(-3px); border-color: var(--accent); background: #30251d; }
.cell pre { margin: 16px 0 0; padding: 14px 16px; border-radius: 10px; background: #0f0a08; border: 1px solid var(--line-soft); overflow-x: auto; line-height: 1.55; }
.cell pre .p { color: var(--accent); } .cell pre .o { color: var(--phosphor-dim); }

.arch { border: 1px solid var(--line); border-radius: 20px; padding: 30px 26px 22px; background: rgba(20, 14, 11, .55); }
.arch svg { width: 100%; height: auto; display: block; }
.arch .box rect { fill: #241a14; stroke: var(--line); stroke-width: 1.4; }
.arch .box.hot rect { fill: #2f2016; stroke: url(#g); stroke-width: 2; filter: drop-shadow(0 0 16px rgba(255, 122, 26, .35)); }
.arch .box.dim rect { fill: transparent; stroke-dasharray: 6 6; }
.arch text { fill: var(--text); font: 600 17px var(--sans); text-anchor: middle; }
.arch text.s { fill: var(--faint); font: 13px var(--mono); }
.arch text.lbl { fill: var(--accent); font: 700 12px var(--mono); letter-spacing: .1em; }
.arch .wire { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-dasharray: 5 7; animation: flow 1.6s linear infinite; }
.arch .wire.thin { stroke: var(--line); animation: none; stroke-dasharray: none; }
@keyframes flow { to { stroke-dashoffset: -24; } }
.arch-note { margin: 18px 4px 0; color: var(--faint); font-size: .93rem; max-width: 62em; }

.steps { list-style: none; counter-reset: s; padding: 0; margin: 0 0 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.steps li { counter-increment: s; position: relative; padding: 26px 26px 22px 78px; border-radius: 18px; border: 1px solid var(--line); background: var(--raised); min-width: 0; }
.steps li::before { content: counter(s); position: absolute; left: 24px; top: 24px; width: 36px; height: 36px; border-radius: 11px; display: grid; place-items: center; font: 800 1rem var(--mono); color: var(--ink); background: linear-gradient(135deg, var(--accent-strong), var(--ember)); }
.steps pre { position: relative; margin: 10px 0 12px; padding: 14px 16px; border-radius: 10px; background: #0f0a08; border: 1px solid var(--line-soft); overflow-x: auto; line-height: 1.55; color: #e9dcc8; }
.copy { position: absolute; top: 8px; right: 8px; font: 600 .7rem var(--mono); color: var(--faint); background: var(--raised); border: 1px solid var(--line); border-radius: 7px; padding: 4px 9px; cursor: pointer; opacity: 0; transition: opacity .15s, color .15s; }
pre:hover .copy, .copy:focus-visible { opacity: 1; } .copy:hover { color: var(--text); }
.links { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.links li { padding: 9px 15px; border: 1px solid var(--line); border-radius: 999px; background: rgba(42, 32, 26, .6); font-size: .93rem; color: var(--faint); }

.final { margin-top: 64px; padding: 38px; display: flex; align-items: center; gap: 30px; border-radius: 24px; border: 1px solid rgba(245, 189, 110, .35); background: radial-gradient(90% 140% at 0% 50%, rgba(255, 122, 26, .2), transparent 60%), var(--raised); }
.final img { filter: drop-shadow(0 10px 22px rgba(0, 0, 0, .6)); }
.final-line { font-size: clamp(1.4rem, 2.6vw, 2.1rem); font-weight: 800; letter-spacing: -.025em; margin: 0 0 18px; }
.final .repos { margin: 0; }

footer { padding: 44px var(--pad) 60px; border-top: 1px solid var(--line-soft); color: var(--muted); }
.foot-brand { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; flex-wrap: wrap; } .foot-brand strong { letter-spacing: .14em; } .foot-brand span { color: var(--faint); font-size: .92rem; }
footer .small { font-size: .84rem; color: var(--faint); max-width: 64em; margin: 0 0 10px; }

/* Revealed as they scroll into view; visible at once without scripts or with
 * reduced motion. */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1); transition-delay: var(--d, 0ms); }
.js .reveal.in { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; gap: 56px; }
  .screen { transform: none !important; } .linx { right: 6px; bottom: -50px; width: 96px; }
  .cols, .machines, .steps { grid-template-columns: 1fr; gap: 22px; }
  .bento { grid-template-columns: 1fr 1fr; } .stats { grid-template-columns: 1fr 1fr; }
  .stats div:nth-child(3) { border-left: 0; } .stats div:nth-child(n+3) { border-top: 1px solid var(--line-soft); }
  .top nav a:not(.cta) { display: none; }
}
@media (max-width: 620px) {
  .bento { grid-template-columns: 1fr; } .cell.wide { grid-column: span 1; }
  .final { flex-direction: column; align-items: flex-start; } .steps li { padding: 70px 20px 18px 20px; }
  .screen-body { min-height: 280px; max-height: 280px; font-size: .72rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}