/* www-next — C10:OS next-generation public site (prototype)
   dark techno, evolved · one skin, two lenses (plain grotesk / geek mono) */

:root {
  --bg: #050505;
  --bg-2: #0b0b0c;
  --fg: #f2f2f0;
  --fg-dim: #9a9a96;
  --fg-muted: #55554f;
  --accent: #3aff87;
  --accent-dim: #1f9c52;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.2);
  --grid: rgba(255, 255, 255, 0.015);
  --sans: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --max: 1120px;
  --pad: clamp(20px, 4vw, 48px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  background:
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 64px 64px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 64px 64px,
    var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(58, 255, 135, 0.25); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--pad); }

a { color: inherit; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- lens machinery ---------- */
/* .p = plain (founder) copy · .g = geek copy. Root data-lens governs;
   a section's data-override wins over the root. */
.g { display: none; font-family: var(--mono); }
html[data-lens="geek"] .p { display: none; }
html[data-lens="geek"] .g { display: revert; }
section[data-override="geek"] .p { display: none; }
section[data-override="geek"] .g { display: revert; }
html[data-lens="geek"] section[data-override="plain"] .p { display: revert; }
html[data-lens="geek"] section[data-override="plain"] .g { display: none; }

.g { font-size: 0.92em; color: var(--fg-dim); }
.g strong, .g b { color: var(--fg); font-weight: 600; }

.lens-fade { animation: lensfade 240ms ease; }
@keyframes lensfade { from { opacity: 0.25; } to { opacity: 1; } }

/* per-section precise affordance — the only lens control on the page */
.precise {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  color: var(--fg-muted); background: none; border: 1px solid transparent;
  border-radius: 999px; padding: 3px 10px; cursor: pointer;
  text-transform: uppercase; white-space: nowrap;
}
.precise:hover { color: var(--accent); border-color: var(--line); }
section[data-override="geek"] .precise,
html[data-lens="geek"] section:not([data-override="plain"]) .precise {
  color: var(--accent); border-color: var(--accent-dim);
}

/* ---------- header ---------- */
header.site {
  position: sticky; top: 0; z-index: 20;
  background: rgba(5, 5, 5, 0.82); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
header.site .bar {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px; gap: 16px;
}
.brand { font-family: var(--mono); font-weight: 700; font-size: 16px; letter-spacing: 0.06em; text-decoration: none; }
.brand .cursor { color: var(--accent); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
nav.main { display: flex; gap: clamp(12px, 2.5vw, 28px); }
nav.main a {
  font-size: 13px; letter-spacing: 0.05em; text-decoration: none; color: var(--fg-dim);
}
nav.main a:hover { color: var(--fg); }
@media (max-width: 720px) { nav.main { display: none; } }

/* prototype ribbon */
.proto-ribbon {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-align: center; padding: 6px var(--pad);
  color: var(--bg); background: var(--accent);
  text-transform: uppercase;
}

/* ---------- sections ---------- */
section.band { border-bottom: 1px solid var(--line); padding: clamp(72px, 10vh, 140px) 0; }
.eyebrow {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--fg-muted); margin-bottom: 20px;
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
}
h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 500; letter-spacing: -0.01em; line-height: 1.15; margin-bottom: 20px; }
.lede { font-size: clamp(17px, 2vw, 20px); color: var(--fg-dim); max-width: 62ch; }
.lede.g { font-size: 15px; }

/* ---------- hero ---------- */
.hero { padding: clamp(80px, 14vh, 180px) 0 clamp(64px, 10vh, 120px); border-bottom: 1px solid var(--line); }
.hero .mark {
  font-family: var(--mono); font-weight: 700; letter-spacing: -0.02em;
  font-size: clamp(44px, 9vw, 120px); line-height: 1;
}
.hero h1 {
  font-size: clamp(30px, 5vw, 60px); font-weight: 500; line-height: 1.12;
  letter-spacing: -0.015em; margin: 36px 0 20px; max-width: 26ch;
}
.hero .sub { font-size: clamp(16px, 2vw, 20px); color: var(--fg-dim); max-width: 52ch; }
.hero .sub.g { max-width: 68ch; }

/* describe input */
.describe { display: flex; gap: 10px; margin-top: 40px; max-width: 640px; flex-wrap: wrap; }
.describe input {
  flex: 1 1 320px; background: var(--bg-2); border: 1px solid var(--line-strong);
  border-radius: 6px; color: var(--fg); font: 15px var(--sans);
  padding: 15px 18px;
}
.describe input::placeholder { color: var(--fg-muted); }
.describe input:focus { outline: none; border-color: var(--accent-dim); }
.describe button {
  background: var(--accent); color: #04140a; border: none; border-radius: 6px;
  font: 600 14px var(--sans); letter-spacing: 0.02em;
  padding: 15px 26px; cursor: pointer;
}
.describe button:hover { filter: brightness(1.1); }
.describe .ack { flex-basis: 100%; font-family: var(--mono); font-size: 12px; color: var(--accent-dim); min-height: 18px; }

/* ---------- the loop ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 44px; }
.step { background: var(--bg); padding: 28px 24px 32px; }
.step .n { font-family: var(--mono); font-size: 12px; color: var(--accent-dim); letter-spacing: 0.12em; }
.step h3 { font-size: 20px; font-weight: 600; margin: 10px 0 10px; }
.step p { font-size: 14.5px; color: var(--fg-dim); }
.step .g { font-size: 13px; }

/* ---------- cards (business in a box) ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(225px, 1fr)); gap: 20px; margin-top: 44px; }
.card { border: 1px solid var(--line); background: var(--bg-2); border-radius: 8px; padding: 26px 24px; }
.card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--fg-dim); }
.card .g { font-size: 13px; }

/* ---------- yours ---------- */
.creed {
  font-family: var(--mono); font-size: clamp(18px, 2.6vw, 26px); line-height: 1.5;
  border-left: 2px solid var(--accent); padding-left: 24px; margin: 40px 0; max-width: 34ch;
}

/* ---------- proof board ---------- */
.board { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 44px; }
@media (max-width: 720px) { .board { grid-template-columns: 1fr; } }
.board .col { border: 1px solid var(--line); border-radius: 8px; padding: 26px 24px; background: var(--bg-2); }
.board h3 { font-family: var(--mono); font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 18px; }
.board .live h3 { color: var(--accent); }
.board .forming h3 { color: var(--fg-muted); }
.board ul { list-style: none; }
.board li { padding: 9px 0; border-top: 1px solid var(--line); font-size: 14.5px; color: var(--fg-dim); }
.board li:first-child { border-top: none; }
.board .live li::before { content: "●"; color: var(--accent); font-size: 9px; margin-right: 10px; vertical-align: 1px; }
.board .forming li::before { content: "○"; color: var(--fg-muted); font-size: 9px; margin-right: 10px; vertical-align: 1px; }
.board li .g { margin: 2px 0 0 19px; }
html[data-lens="geek"] .board li .g,
section[data-override="geek"] .board li .g { display: block; }
html[data-lens="geek"] section[data-override="plain"] .board li .g { display: none; }

/* ---------- footer ---------- */
footer.site { padding: 56px 0 72px; }
footer.site .creedline { font-family: var(--mono); font-size: 13px; color: var(--fg-dim); margin-bottom: 20px; }
footer.site .meta { display: flex; flex-wrap: wrap; gap: 10px 28px; font-family: var(--mono); font-size: 12px; color: var(--fg-muted); }
footer.site .meta a { color: var(--fg-dim); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line-strong); }
footer.site .meta a:hover { color: var(--accent); text-decoration-color: var(--accent-dim); }

/* ---------- hero-variations page ---------- */
.variant { border-bottom: 1px solid var(--line-strong); padding: 56px 0 88px; }
.variant .tag {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--bg); background: var(--fg); display: inline-block; padding: 4px 10px; border-radius: 3px;
  margin-bottom: 40px;
}
.variant .note { font-size: 14px; color: var(--fg-muted); margin-top: 32px; max-width: 60ch; }

/* B: terminal hero */
.term {
  background: #070808; border: 1px solid var(--line-strong); border-radius: 10px;
  font-family: var(--mono); font-size: clamp(13px, 1.6vw, 15px); line-height: 1.9;
  padding: 22px 26px 30px; max-width: 760px; box-shadow: 0 24px 60px rgba(0,0,0,.5);
}
.term .chrome { display: flex; gap: 7px; margin-bottom: 18px; }
.term .chrome i { width: 10px; height: 10px; border-radius: 50%; background: var(--fg-muted); opacity: .5; }
.term .ln { white-space: pre-wrap; }
.term .prompt { color: var(--accent); }
.term .out { color: var(--fg-dim); }
.term .hd { color: var(--fg); font-weight: 700; font-size: 1.35em; }
.term input {
  background: none; border: none; color: var(--fg); font: inherit; width: 70%;
}
.term input:focus { outline: none; }

/* C: split playback */
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.playback {
  border: 1px solid var(--line-strong); border-radius: 10px; background: var(--bg-2);
  padding: 24px; font-size: 14px; box-shadow: 0 24px 60px rgba(0,0,0,.5);
}
.playback .ph { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-dim); margin-bottom: 14px; }
.playback .row { border-top: 1px solid var(--line); padding: 10px 0; color: var(--fg-dim); }
.playback .row b { color: var(--fg); font-weight: 600; }
.playback .q { color: var(--fg); }
.playback .q::before { content: "? "; color: var(--accent); font-family: var(--mono); }