/* mixos.css — shared stylesheet for mixos.au and mixos.nexus.
   Every colour is a token; light mode is a full token swap. */

:root {
  --bg:        #08090d;
  --bg-2:      #0e1017;
  --bg-3:      #151823;
  --rule:      #232838;
  --ink:       #ecebe4;
  --ink-2:     #b4b3ab;
  --ink-3:     #7a7a76;
  --mint:      #5ef2c2;
  --amber:     #ffb547;
  --coral:     #ff6f61;
  --violet:    #a98bff;
  --sky:       #6cb8ff;
  --glow-a:    rgba(94, 242, 194, 0.13);
  --glow-b:    rgba(169, 139, 255, 0.10);
  --glow-c:    rgba(255, 181, 71, 0.07);
  --card:      rgba(255, 255, 255, 0.025);
  --card-hi:   rgba(255, 255, 255, 0.05);
  --code-bg:   #06070a;
  --shadow:    0 30px 80px -30px rgba(0, 0, 0, 0.7);
  --grid-line: rgba(255, 255, 255, 0.035);
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg:        #f7f6f1;
    --bg-2:      #efede6;
    --bg-3:      #e6e3da;
    --rule:      #d6d2c6;
    --ink:       #16171c;
    --ink-2:     #45464d;
    --ink-3:     #74746f;
    --mint:      #0b9e74;
    --amber:     #b86e00;
    --coral:     #d2433a;
    --violet:    #6a4fd6;
    --sky:       #1f6fd1;
    --glow-a:    rgba(11, 158, 116, 0.12);
    --glow-b:    rgba(106, 79, 214, 0.09);
    --glow-c:    rgba(184, 110, 0, 0.07);
    --card:      rgba(0, 0, 0, 0.025);
    --card-hi:   rgba(0, 0, 0, 0.05);
    --code-bg:   #15161b;
    --shadow:    0 30px 60px -30px rgba(40, 30, 0, 0.25);
    --grid-line: rgba(0, 0, 0, 0.045);
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60rem 40rem at 85% -10%, var(--glow-b), transparent 60%),
    radial-gradient(50rem 35rem at -10% 10%, var(--glow-a), transparent 60%),
    radial-gradient(40rem 30rem at 50% 110%, var(--glow-c), transparent 60%),
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0 / 100% 48px,
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0 / 48px 100%;
  mask-image: linear-gradient(to bottom, #000 0%, #000 55%, transparent 100%);
}

a { color: var(--mint); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
code, pre, .mono { font-family: "JetBrains Mono", "Fira Code", ui-monospace, "SFMono-Regular", Menlo, monospace; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }

/* ── nav ───────────────────────────────────────────── */
nav.top {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--rule) 60%, transparent);
}
nav.top .wrap { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; letter-spacing: -0.01em; font-size: 18px; }
.brand:hover { text-decoration: none; }
.brand svg { width: 26px; height: 26px; }
.brand .os { color: var(--mint); }
nav.top .links { margin-left: auto; display: flex; gap: 22px; font-size: 15px; }
nav.top .links a { color: var(--ink-2); }
nav.top .links a:hover { color: var(--ink); text-decoration: none; }
@media (max-width: 640px) { nav.top .links a.opt { display: none; } }

/* ── hero ──────────────────────────────────────────── */
.hero { padding: 96px 0 56px; position: relative; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 14px 6px 10px; border-radius: 999px;
  border: 1px solid var(--rule); background: var(--card);
  font-size: 13px; color: var(--ink-2);
}
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 12px var(--amber); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.35; } }
h1 {
  margin: 26px 0 18px;
  font-size: clamp(42px, 7.4vw, 88px);
  line-height: 1.02; letter-spacing: -0.035em; font-weight: 800;
}
h1 .grad {
  background: linear-gradient(100deg, var(--mint) 0%, var(--sky) 45%, var(--violet) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { font-size: clamp(18px, 2.1vw, 22px); color: var(--ink-2); max-width: 46rem; margin: 0 0 34px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 10px; font-weight: 600; font-size: 15px;
  border: 1px solid var(--rule); color: var(--ink); background: var(--card);
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { text-decoration: none; background: var(--card-hi); transform: translateY(-1px); border-color: var(--ink-3); }
.btn.primary { background: var(--mint); color: #04130d; border-color: transparent; }
.btn.primary:hover { background: color-mix(in srgb, var(--mint) 88%, white); }

/* ── bus diagram ───────────────────────────────────── */
.bus {
  margin-top: 64px; border: 1px solid var(--rule); border-radius: 18px;
  background: linear-gradient(180deg, var(--bg-2), var(--bg));
  box-shadow: var(--shadow); padding: 22px 18px 14px; overflow: hidden;
}
.bus .scroll { overflow-x: auto; }
.bus svg { display: block; width: 100%; min-width: 640px; height: auto; }
.bus .cap { display: flex; justify-content: space-between; gap: 12px; font-size: 13px; color: var(--ink-3); padding: 6px 6px 0; flex-wrap: wrap; }
.bus .node rect { fill: var(--bg-3); stroke: var(--rule); }
.bus .node text { fill: var(--ink); font: 600 13px "JetBrains Mono", ui-monospace, monospace; }
.bus .node .sub { fill: var(--ink-3); font-weight: 400; font-size: 11px; }
.bus .rail { stroke: var(--rule); stroke-width: 2; }
.bus .tap { stroke: var(--rule); stroke-width: 1.5; stroke-dasharray: 3 4; }
.bus .rail-label { fill: var(--ink-3); font: 11px "JetBrains Mono", ui-monospace, monospace; letter-spacing: .12em; }
.bus .pkt-a { fill: var(--mint); }
.bus .pkt-b { fill: var(--amber); }
.bus .pkt-c { fill: var(--violet); }
@media (prefers-reduced-motion: reduce) {
  .bus .pkt-a, .bus .pkt-b, .bus .pkt-c { display: none; }
  .eyebrow .dot { animation: none; }
}

/* ── sections ──────────────────────────────────────── */
section { padding: 72px 0; }
.kicker { font: 600 12px "JetBrains Mono", ui-monospace, monospace; letter-spacing: .16em; text-transform: uppercase; color: var(--mint); margin-bottom: 14px; }
h2 { font-size: clamp(30px, 4.2vw, 46px); line-height: 1.1; letter-spacing: -0.025em; margin: 0 0 18px; font-weight: 750; }
.sec-lede { color: var(--ink-2); max-width: 44rem; margin: 0 0 40px; font-size: 18px; }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.card {
  border: 1px solid var(--rule); border-radius: 16px; padding: 24px;
  background: var(--card); position: relative; overflow: hidden;
  transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: color-mix(in srgb, var(--mint) 45%, var(--rule)); transform: translateY(-2px); }
.card .ico { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; margin-bottom: 16px; font: 700 15px "JetBrains Mono", ui-monospace, monospace; }
.card h3 { margin: 0 0 8px; font-size: 19px; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--ink-2); font-size: 15.5px; }
.i-mint   { background: color-mix(in srgb, var(--mint) 16%, transparent);   color: var(--mint); }
.i-amber  { background: color-mix(in srgb, var(--amber) 16%, transparent);  color: var(--amber); }
.i-violet { background: color-mix(in srgb, var(--violet) 18%, transparent); color: var(--violet); }
.i-sky    { background: color-mix(in srgb, var(--sky) 16%, transparent);    color: var(--sky); }
.i-coral  { background: color-mix(in srgb, var(--coral) 16%, transparent);  color: var(--coral); }

/* ── split: code + copy ────────────────────────────── */
.split { display: grid; gap: 40px; grid-template-columns: 1fr 1.1fr; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.term {
  border-radius: 14px; overflow: hidden; border: 1px solid #22262f;
  background: var(--code-bg); box-shadow: var(--shadow);
}
.term .bar { display: flex; gap: 7px; align-items: center; padding: 11px 14px; background: #0d0f14; border-bottom: 1px solid #1c2027; }
.term .bar i { width: 11px; height: 11px; border-radius: 50%; background: #2b2f38; }
.term .bar span { margin-left: 10px; font: 12px "JetBrains Mono", ui-monospace, monospace; color: #7d828c; }
.term pre { margin: 0; padding: 20px 22px; font-size: 14px; line-height: 1.7; color: #d8dbe2; overflow-x: auto; }
.term .c { color: #646b78; }
.term .k { color: #c792ea; }
.term .s { color: #c3e88d; }
.term .v { color: #82aaff; }
.term .f { color: #5ef2c2; }
.term .o { color: #8a909c; }
.term .p { color: #ffb547; }

ul.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
ul.ticks li { padding-left: 30px; position: relative; color: var(--ink-2); }
ul.ticks li::before { content: ""; position: absolute; left: 0; top: .55em; width: 16px; height: 2px; background: var(--mint); }
ul.ticks b { color: var(--ink); font-weight: 650; }

/* ── layers stack ──────────────────────────────────── */
.stack { display: grid; gap: 10px; }
.layer {
  display: grid; grid-template-columns: 150px 1fr; gap: 20px; align-items: center;
  padding: 18px 22px; border-radius: 14px; border: 1px solid var(--rule); background: var(--card);
}
.layer .name { font: 700 14px "JetBrains Mono", ui-monospace, monospace; }
.layer p { margin: 0; color: var(--ink-2); font-size: 15.5px; }
@media (max-width: 600px) { .layer { grid-template-columns: 1fr; gap: 6px; } }

/* ── lineage ───────────────────────────────────────── */
.lineage { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.lineage .era { border-left: 2px solid var(--rule); padding: 4px 0 4px 18px; }
.lineage .era b { display: block; font-size: 17px; margin-bottom: 4px; }
.lineage .era span { color: var(--ink-2); font-size: 15px; }
.lineage .era.now { border-color: var(--mint); }

/* ── status band ───────────────────────────────────── */
.band {
  border: 1px solid var(--rule); border-radius: 20px; padding: 40px;
  background:
    radial-gradient(30rem 16rem at 100% 0%, var(--glow-b), transparent 70%),
    radial-gradient(30rem 16rem at 0% 100%, var(--glow-a), transparent 70%),
    var(--bg-2);
}
.band h2 { margin-bottom: 12px; }
.band p { color: var(--ink-2); max-width: 46rem; }
.steps { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin: 28px 0 30px; }
.step { padding: 16px 18px; border-radius: 12px; background: var(--card); border: 1px solid var(--rule); font-size: 15px; color: var(--ink-2); }
.step b { display: block; color: var(--ink); font-size: 14px; font-family: "JetBrains Mono", ui-monospace, monospace; margin-bottom: 4px; }
.step.done b { color: var(--mint); }
.step.live b { color: var(--amber); }

/* ── footer ────────────────────────────────────────── */
footer { padding: 48px 0 64px; border-top: 1px solid var(--rule); margin-top: 40px; color: var(--ink-3); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 18px 32px; justify-content: space-between; align-items: center; }
footer .links { display: flex; flex-wrap: wrap; gap: 20px; }
footer a { color: var(--ink-2); }

/* ── redirect page ─────────────────────────────────── */
.redirect { min-height: 100vh; display: grid; place-items: center; text-align: center; padding: 32px 16px; }
.redirect h1 { font-size: clamp(34px, 6vw, 56px); margin: 18px 0 10px; }
.redirect p { color: var(--ink-2); }