/* PlayOS — minimal, fast, dark */

:root {
  --bg: #0a0c0f;
  --bg-soft: #0e1115;
  --surface: #12161b;
  --surface-2: #181d23;
  --border: #20262e;
  --border-strong: #2b333d;
  --text: #edf1f4;
  --muted: #9aa5b0;
  --faint: #7d8893;
  --accent: #5eead4;
  --accent-strong: #2dd4bf;
  --accent2: #a78bfa;
  --accent3: #fbbf24;
  --accent-dim: rgba(94, 234, 212, 0.12);
  --accent-glow: rgba(45, 212, 191, 0.35);
  --accent-grad: linear-gradient(135deg, #2dd4bf 0%, #22d3ee 50%, #a78bfa 100%);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  --maxw: 1080px;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); }

::selection { background: var(--accent-dim); color: var(--text); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 12, 15, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; letter-spacing: -0.01em; }
.brand:hover { color: var(--text); }
.brand svg { display: block; }
.brand .brand-name { font-size: 17px; }
.brand .brand-sub { color: var(--faint); font-weight: 400; font-size: 13px; margin-left: 2px; }

.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--muted); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--accent-grad);
  color: #fff !important;
  padding: 7px 14px;
  border-radius: 8px;
  font-weight: 600;
  box-shadow: 0 6px 18px -8px rgba(45, 212, 191, 0.6);
}
.nav-cta:hover { filter: brightness(1.08); color: #fff !important; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 16px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 96px 0 72px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -30% -15% auto;
  height: 640px;
  background:
    radial-gradient(ellipse 55% 50% at 50% 0%, rgba(45, 212, 191, 0.26), transparent 70%),
    radial-gradient(ellipse 45% 45% at 74% 18%, rgba(167, 139, 250, 0.22), transparent 70%),
    radial-gradient(ellipse 40% 40% at 26% 22%, rgba(34, 211, 238, 0.16), transparent 70%);
  filter: saturate(1.2);
  pointer-events: none;
  animation: aurora 16s ease-in-out infinite alternate;
}
@keyframes aurora {
  from { opacity: 0.85; transform: translateY(0) scale(1); }
  to { opacity: 1; transform: translateY(-20px) scale(1.05); }
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--border-strong);
  background: var(--accent-dim);
  padding: 5px 12px;
  border-radius: 999px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

.hero h1 {
  margin: 20px 0 8px;
  font-size: clamp(40px, 7vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 700;
}
.hero h1 .accent {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero .tagline { font-size: clamp(19px, 2.6vw, 24px); color: var(--muted); font-weight: 400; margin: 0 0 16px; letter-spacing: -0.01em; }
.hero .lede { color: var(--muted); font-size: 16px; max-width: 46ch; margin: 0 0 28px; }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 9px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.05s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: 0 10px 26px -12px rgba(45, 212, 191, 0.55);
}
.btn-primary:hover { filter: brightness(1.08); color: #fff; box-shadow: 0 12px 30px -10px rgba(167, 139, 250, 0.55); }
.btn-ghost { border-color: var(--border-strong); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Terminal ---------- */
.terminal {
  background: #0d0e12;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.8);
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
}
.terminal-bar .dots { display: flex; gap: 6px; }
.terminal-bar .dots span { width: 11px; height: 11px; border-radius: 50%; }
.terminal-bar .dots span:nth-child(1) { background: #ff5f57; }
.terminal-bar .dots span:nth-child(2) { background: #febc2e; }
.terminal-bar .dots span:nth-child(3) { background: #28c840; }
.terminal-bar .title { color: var(--faint); font-family: var(--mono); font-size: 12px; margin-left: 8px; }
.terminal-body { padding: 18px 20px; font-family: var(--mono); font-size: 13.5px; line-height: 1.75; color: var(--muted); }
.terminal-body .ok { color: #4ade80; }
.terminal-body .acc { color: var(--accent); }
.terminal-body .dim { color: var(--faint); }
.terminal-body .cursor { display: inline-block; width: 8px; height: 15px; background: var(--accent); vertical-align: -2px; animation: blink 1.1s steps(2, start) infinite; }
@keyframes blink { to { visibility: hidden; } }

/* ---------- Sections ---------- */
section { padding: 72px 0; }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-kicker { font-size: 12.5px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }
.section-title { font-size: clamp(26px, 4vw, 36px); letter-spacing: -0.025em; font-weight: 700; margin: 8px 0 10px; }
.section-sub { color: var(--muted); font-size: 16px; margin: 0; }

/* ---------- Features ---------- */
.grid { display: grid; gap: 16px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.card .icon { width: 40px; height: 40px; border-radius: 9px; background: var(--accent-dim); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; color: var(--accent); margin-bottom: 16px; }
.card h3 { margin: 0 0 8px; font-size: 17px; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }

#features .card:nth-child(1) .icon { background: rgba(56, 189, 248, 0.14); color: #7dd3fc; border-color: rgba(56, 189, 248, 0.3); }
#features .card:nth-child(2) .icon { background: rgba(192, 132, 252, 0.14); color: #c4b5fd; border-color: rgba(192, 132, 252, 0.3); }
#features .card:nth-child(3) .icon { background: rgba(52, 211, 153, 0.14); color: #6ee7b7; border-color: rgba(52, 211, 153, 0.3); }
#features .card:nth-child(4) .icon { background: rgba(251, 191, 36, 0.14); color: #fcd34d; border-color: rgba(251, 191, 36, 0.3); }
#features .card:nth-child(5) .icon { background: rgba(248, 113, 113, 0.14); color: #fca5a5; border-color: rgba(248, 113, 113, 0.3); }
#features .card:nth-child(6) .icon { background: rgba(129, 140, 248, 0.14); color: #a5b4fc; border-color: rgba(129, 140, 248, 0.3); }

/* ---------- Architecture ---------- */
.arch { border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-soft); padding: 8px; }
.arch-row { display: grid; grid-template-columns: 1fr; gap: 8px; }
.arch-layer {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: 9px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.arch-layer .badge { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--faint); min-width: 92px; }
.arch-layer .name { font-weight: 600; font-size: 15px; }
.arch-layer .desc { color: var(--muted); font-size: 13.5px; margin-left: auto; text-align: right; }
.arch-layer.owner { border-color: var(--accent-dim); background: linear-gradient(180deg, var(--accent-dim), transparent); }
.arch-arrow { text-align: center; color: var(--faint); font-size: 13px; line-height: 1; padding: 2px 0; }

.principle-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 10px; }
.principle-list li { display: flex; gap: 12px; color: var(--muted); font-size: 14.5px; }
.principle-list li::before { content: "—"; color: var(--accent); }

/* ---------- Ecosystem ---------- */
.eco-group { margin-bottom: 32px; }
.eco-group h3 { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); margin: 0 0 14px; }
.repo {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  transition: border-color 0.15s;
}
.repo:hover { border-color: var(--accent); color: var(--text); }
.repo .name { font-family: var(--mono); font-size: 13.5px; font-weight: 600; white-space: nowrap; }
.repo .desc { color: var(--muted); font-size: 13.5px; }
.repo svg { flex: none; color: var(--faint); }

/* ---------- Roadmap / Sprint status ---------- */
.progress {
  height: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 4px;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #2dd4bf, #22d3ee, #a78bfa);
  border-radius: 999px;
}
.progress-label {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--faint);
  margin: 8px 0 28px;
}

.sprint-cols { align-items: start; }
.sprint-card { padding: 26px; }
.sprint-card:hover { transform: none; }
.sprint-head { display: flex; align-items: center; gap: 13px; }
.sprint-badge {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex: none;
}
.sprint-badge.done { background: rgba(74, 222, 128, 0.14); color: #4ade80; border: 1px solid rgba(74, 222, 128, 0.28); }
.sprint-badge.pending { background: rgba(192, 132, 252, 0.14); color: #c4b5fd; border: 1px solid rgba(192, 132, 252, 0.3); }
.sprint-head h3 { margin: 0; font-size: 17px; letter-spacing: -0.01em; }
.sprint-head p { margin: 0; font-size: 13px; color: var(--faint); }
.sprint-count {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 28px;
  font-weight: 700;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.sprint-list { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 6px; }
.sprint-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--muted);
  padding: 8px 11px;
  border-radius: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
}
.sprint-list .sprint-num { font-family: var(--mono); font-size: 12px; color: var(--accent); font-weight: 600; min-width: 26px; flex: none; }
.sprint-note {
  margin: 14px 0 0;
  font-size: 12.5px;
  color: var(--faint);
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

/* ---------- Roadmap / CTA band ---------- */
.band {
  margin-top: 32px;
  background: linear-gradient(180deg, var(--accent-dim), transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
}
.band h2 { margin: 0 0 8px; font-size: clamp(24px, 4vw, 32px); letter-spacing: -0.02em; }
.band p { color: var(--muted); margin: 0 0 24px; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 56px;
  margin-top: 40px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-brand p { color: var(--muted); font-size: 14px; max-width: 30ch; }
.footer-col h4 { font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--faint); margin: 0 0 12px; }
.footer-col a { display: block; color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--faint); font-size: 13px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .grid.cols-3 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .arch-layer { flex-wrap: wrap; }
  .arch-layer .desc { margin-left: 0; width: 100%; text-align: left; }
}
@media (max-width: 620px) {
  .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 60px; left: 0; right: 0; background: var(--bg-soft); border-bottom: 1px solid var(--border); padding: 16px 24px; gap: 16px; }
  .nav-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr; }
  .repo { flex-wrap: wrap; }
  .repo .desc { width: 100%; }
}

/* ---------- Links / focus ---------- */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 2px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-cta svg { display: block; }

.footer-col a.gh {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col a.gh svg { display: block; }

/* ---------- Repo hover affordance ---------- */
.repo {
  transition: border-color 0.15s, transform 0.15s;
}
.repo:hover { transform: translateY(-2px); }
.repo::after {
  content: "→";
  flex: none;
  margin-left: auto;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.15s, transform 0.15s;
}
.repo:hover::after {
  opacity: 1;
  transform: translateX(0);
}

@media (max-width: 620px) {
  .repo::after { display: none; }
}

/* ---------- Reveal on scroll ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}

/* ================= Console OS skin ================= */

/* subtle dashboard dot-grid behind everything */
body {
  background:
    radial-gradient(rgba(237, 241, 244, 0.04) 1px, transparent 1.2px),
    var(--bg);
  background-size: 22px 22px, auto;
}

/* CRT-ish scanlines over the hero */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, rgba(237, 241, 244, 0.022) 0 1px, transparent 1px 3px);
  pointer-events: none;
  z-index: 0;
}
.hero-inner { z-index: 1; }

/* top status bar */
.statusbar {
  background: #04060a;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--faint);
}
.statusbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 30px;
}
.status-mode {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-strong);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}
.status-right { display: inline-flex; align-items: center; gap: 16px; }
.status-item { display: inline-flex; align-items: center; gap: 6px; }
.status-item svg { color: var(--accent); }

/* section kicker marker */
.section-kicker::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--accent-strong);
  box-shadow: 0 0 10px var(--accent-glow);
  margin-right: 9px;
  vertical-align: -1px;
}

/* gamepad key caps & hints */
.gamepad-hints {
  display: flex;
  gap: 18px;
  margin-top: 18px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 12px;
}
.hint { display: inline-flex; align-items: center; gap: 7px; }
.keycap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border-radius: 7px;
  border: 1px solid var(--border-strong);
  background: linear-gradient(180deg, var(--surface-2), var(--bg-soft));
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 1px 2px rgba(0, 0, 0, 0.45);
}

/* buttons read as console menu pills */
.btn {
  border-radius: 12px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07);
}
.btn-primary {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16), 0 10px 26px -12px rgba(45, 212, 191, 0.6);
}
.btn-ghost { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05); }
.btn-ghost:hover {
  border-color: var(--accent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 0 0 1px rgba(45, 212, 191, 0.18), 0 8px 24px -16px rgba(45, 212, 191, 0.5);
}

/* features → home-screen tiles */
#features .card {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border-radius: 18px;
  padding: 26px 24px;
}
#features .card .icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
#features .card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 18px 40px -20px rgba(45, 212, 191, 0.45), 0 0 0 1px rgba(45, 212, 191, 0.18);
}

/* repo rows read as console menu items */
.repo {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border-radius: 12px;
}
.repo:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 24px -18px rgba(45, 212, 191, 0.5), 0 0 0 1px rgba(45, 212, 191, 0.16);
}

/* gamepad focus ring */
a:focus-visible,
button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent-strong);
  border-radius: 8px;
}

/* custom scrollbar */
::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--surface-2);
  border: 3px solid var(--bg);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-strong); }

@media (max-width: 620px) {
  .status-right .status-item svg + span { display: none; }
  .gamepad-hints { flex-direction: column; gap: 8px; }
}