/*
 * ps5lm.cobanov.dev
 *
 * Same family as cobanov.dev and herdrchat.cobanov.dev: the dark ground, the
 * self-hosted Recursive (mono cut for the wordmark, headings and buttons, sans
 * cut for reading), hairline rules between sections, near-square corners, the
 * 1160px measure and the periwinkle accent. The one thing this page adds is
 * the console itself: the demo video in the hero, and the boot chain set as a
 * terminal panel, since that is how the project actually runs.
 */

@font-face {
  font-family: "Recursive Sans";
  src: url("/assets/fonts/recursive-sans-v1.woff2") format("woff2");
  font-weight: 300 1000;
  font-display: swap;
}

@font-face {
  font-family: "Recursive Mono";
  src: url("/assets/fonts/recursive-mono-v1.woff2") format("woff2");
  font-weight: 300 1000;
  font-display: swap;
}

:root {
  color-scheme: dark;

  --bg: #0e0e14;
  --bg-elevated: #16161d;
  --panel: #17171f;

  --ink: #f2f2f7;
  --ink-soft: rgba(235, 235, 245, 0.78);
  --muted: rgba(235, 235, 245, 0.55);
  --muted-2: rgba(235, 235, 245, 0.38);
  --line: rgba(235, 235, 245, 0.12);
  --line-strong: rgba(235, 235, 245, 0.22);

  --accent: #8288f0;
  --accent-ink: #ffffff;
  --done: #7fd1a8;

  --term-text: #d4d6dd;
  --term-dim: rgba(235, 235, 245, 0.42);

  --radius-lg: 6px;
  --radius-md: 4px;
  --radius-sm: 2px;

  --max: 1160px;
  --measure: 46rem;

  --mono: "Recursive Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --body: "Recursive Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 76px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }
a:focus-visible, .btn:focus-visible, video:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(14, 14, 20, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
}
.nav { display: flex; align-items: center; gap: 1.25rem; min-height: 60px; }
.brand {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--ink);
  text-decoration: none;
  font-size: 1.05rem;
}
.nav-spacer { flex: 1; }
.nav-links { display: flex; gap: 1.15rem; font-size: 0.9rem; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover { color: var(--ink); }

/* ---------- buttons ---------- */

.cta { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-strong);
  background: var(--bg-elevated);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  text-decoration: none;
}
.btn:hover { border-color: var(--muted-2); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { opacity: 0.9; }

/* ---------- hero ---------- */

.hero { padding: 4.5rem 0 4rem; border-bottom: 1px solid var(--line); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4rem;
  align-items: center;
}
.display {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.05;
  font-size: clamp(2.3rem, 5vw, 3.6rem);
  margin: 0 0 1.4rem;
}
.lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 34rem; margin: 0; }
.hero-note { color: var(--muted); font-size: 0.9rem; margin: 1.1rem 0 0; max-width: 34rem; }

/* The console, filmed: portrait phone video in a plain frame. */
.demo { margin: 0; width: min(340px, 80vw); }
.demo video {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 16;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background: #000;
  cursor: pointer;
}
.demo figcaption { color: var(--muted); font-size: 0.82rem; margin-top: 0.7rem; }

/* ---------- sections ---------- */

section { padding: 3.5rem 0; }
section + section { border-top: 1px solid var(--line); }
h2 {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: -0.035em;
  font-size: 1.35rem;
  margin: 0 0 1.25rem;
}
h3 {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 1rem;
  margin: 0 0 0.4rem;
}
p { margin: 0 0 1rem; max-width: var(--measure); color: var(--ink-soft); }
strong { color: var(--ink); }
code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.35em;
  color: var(--ink);
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.25rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--term-text);
  overflow-x: auto;
  max-width: var(--measure);
  margin: 0 0 1.5rem;
}
.panel .dim { color: var(--term-dim); }
.panel .you { color: var(--accent); }

/* The boot chain: what runs, in order, on the console. */
.chain { list-style: none; padding: 0; margin: 0; }
.chain li { display: grid; grid-template-columns: 8.5rem 1fr; gap: 0 1rem; }
.chain li + li { margin-top: 0.35rem; }
.chain b { color: var(--accent); font-weight: 600; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem 2rem;
}
.stat .value {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 1.15rem;
  color: var(--ink);
  margin: 0 0 0.3rem;
}
.stat p { color: var(--muted); margin: 0; font-size: 0.94rem; }

ul { padding-left: 1.15rem; max-width: var(--measure); color: var(--ink-soft); }
li { margin: 0.4rem 0; }

.roadmap { list-style: none; padding: 0; max-width: var(--measure); margin: 0; }
.roadmap li {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 0 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
}
.roadmap .state { font-family: var(--mono); font-size: 0.85rem; color: var(--muted); }
.roadmap .state.done { color: var(--done); }

.faq h3 { margin-top: 1.6rem; }
.faq h3:first-of-type { margin-top: 0; }

/* ---------- footer ---------- */

.site-footer { border-top: 1px solid var(--line); padding: 2rem 0 3rem; color: var(--muted); font-size: 0.9rem; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--ink); }
.site-footer p { color: var(--muted); max-width: none; }
.foot-row { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; margin-bottom: 0.8rem; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .demo { justify-self: center; }
}
@media (max-width: 620px) {
  .nav-links { display: none; }
  .hero { padding: 3rem 0 2.5rem; }
  .chain li { grid-template-columns: 1fr; }
  .chain li + li { margin-top: 0.7rem; }
  .roadmap li { grid-template-columns: 1fr; }
}

.lessons { margin-top: 2.5rem; }

.steps-list { max-width: var(--measure); color: var(--ink-soft); padding-left: 1.3rem; margin: 0 0 1.25rem; }
.steps-list li { margin: 0.5rem 0; }