/* pyNavis homepage. One centred column on a quiet ground: a faint teal glow from the mark
   gives depth, the display face does the talking, hairlines appear only on the stats row.
   The accent is the mark's own teal. */

:root {
  --paper:         #fbfbfa;
  --surface:       #ffffff;
  --line:          #e4e6e8;
  --ink:           #15181b;
  --muted:         #6a7075;
  --faint:         #a0a6ab;
  --accent:        #178571;
  --accent-strong: #0f5c4e;
  --accent-ink:    #ffffff;
  --glow:          rgba(31, 163, 138, .16);
  --shadow:        0 1px 2px rgba(21, 24, 27, .06), 0 8px 24px rgba(21, 24, 27, .08);
  --display: 'Bricolage Grotesque', 'Segoe UI Variable Display', 'Segoe UI', system-ui, sans-serif;
  --sans:    'Instrument Sans', 'Segoe UI Variable Text', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono:    'JetBrains Mono', Consolas, 'Cascadia Mono', ui-monospace, Menlo, monospace;
  --radius: 10px;
  --gutter: 20px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:         #0f1113;
    --surface:       #16191c;
    --line:          #22262a;
    --ink:           #ecedee;
    --muted:         #9aa1a7;
    --faint:         #5c636a;
    --accent:        #2fc3a6;
    --accent-strong: #1fa38a;
    --accent-ink:    #06201a;
    --glow:          rgba(47, 195, 166, .18);
    --shadow:        0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .45);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper:         #0f1113;
  --surface:       #16191c;
  --line:          #22262a;
  --ink:           #ecedee;
  --muted:         #9aa1a7;
  --faint:         #5c636a;
  --accent:        #2fc3a6;
  --accent-strong: #1fa38a;
  --accent-ink:    #06201a;
  --glow:          rgba(47, 195, 166, .18);
  --shadow:        0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .45);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* Shell */
.top, main, footer {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--display); font-weight: 600; font-size: 17px; letter-spacing: -.01em;
}
.mark { display: block; border-radius: 6px; }
.top nav { display: flex; gap: 26px; font-size: 14px; font-weight: 500; color: var(--muted); }
.top nav a { transition: color .15s; }
.top nav a:hover { color: var(--ink); }

/* Hero */
main {
  position: relative;
  display: flex; flex-direction: column; align-items: center;
  text-align: center;
  padding-top: 72px; padding-bottom: 56px;
  gap: 44px;
  overflow: hidden;
}
main::before {
  content: "";
  position: absolute; left: 50%; top: 40px;
  width: 720px; height: 520px; transform: translateX(-50%);
  background: radial-gradient(closest-side, var(--glow), transparent 70%);
  pointer-events: none; z-index: 0;
}
main > * { position: relative; z-index: 1; }

.hero { display: flex; flex-direction: column; align-items: center; gap: 28px; }
.logo { display: block; width: 128px; height: 128px; border-radius: 30px; box-shadow: var(--shadow); }
.hero h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(44px, 7vw, 68px);
  font-weight: 600;
  letter-spacing: -.035em;
  line-height: 1;
}
.hero h1 b { color: var(--accent); font-weight: 600; }
.tag {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(19px, 2.6vw, 24px);
  font-weight: 500;
  letter-spacing: -.01em;
  text-wrap: balance;
}
.sub { margin: 0; font-size: 15.5px; color: var(--muted); max-width: 46ch; text-wrap: balance; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  height: 50px; padding: 0 22px;
  border-radius: var(--radius);
  font: 600 15px var(--sans); letter-spacing: -.005em;
  cursor: pointer;
  border: 1px solid var(--line);
  background: var(--surface); color: var(--ink);
  box-shadow: 0 1px 2px rgba(21, 24, 27, .05);
  transition: transform .15s, box-shadow .15s, border-color .15s;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); border-color: var(--faint); }
.btn.primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  color: var(--accent-ink);
  border-color: transparent;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .22), 0 1px 2px rgba(15, 92, 78, .3), 0 8px 20px rgba(23, 133, 113, .28);
}
.btn svg { width: 16px; height: 16px; }
.chip {
  font-family: var(--mono); font-weight: 500; font-size: 12.5px;
  padding: 2px 7px; border-radius: 5px;
  background: var(--line); color: var(--ink);
}
.btn.primary .chip { background: rgba(255, 255, 255, .22); color: inherit; }
.play {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent);
  display: grid; place-items: center;
}
.play svg { width: 9px; height: 9px; fill: var(--accent-ink); margin-left: 1px; }

/* Project links */
.links { display: flex; gap: 4px; justify-content: center; flex-wrap: wrap; }
.links a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 999px;
  font-size: 14px; font-weight: 500; color: var(--muted);
  transition: color .15s, background .15s;
}
.links a:hover { color: var(--ink); background: var(--surface); box-shadow: 0 0 0 1px var(--line); }
.links svg {
  width: 17px; height: 17px;
  fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round;
}

/* Stats */
.stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  width: min(100%, 680px);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.stat { padding: 18px 8px; display: flex; flex-direction: column; gap: 4px; transition: background .15s; }
.stat:hover { background: var(--surface); }
.stat + .stat { border-left: 1px solid var(--line); }
.stat .v {
  font-family: var(--display); font-size: 24px; font-weight: 600;
  letter-spacing: -.02em; line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stat .k {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted);
}

/* Footer */
footer { padding-top: 22px; padding-bottom: 30px; font-size: 12.5px; color: var(--faint); text-align: center; }
footer p { margin: 3px 0; }
footer a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }

/* Learn more: the thirty-second film, full screen */
.film {
  position: fixed; inset: 0; z-index: 10;
  background: #000;
  display: flex; align-items: center; justify-content: center;
}
.film[hidden] { display: none; }
.film video { width: 100%; height: 100%; max-width: 100%; max-height: 100%; object-fit: contain; background: #000; }
.film .close {
  position: absolute; top: 14px; right: 16px;
  height: 36px; padding: 0 16px; border-radius: 18px;
  border: 1px solid #444; background: rgba(0, 0, 0, .6); color: #fff;
  font: 500 14px var(--sans); cursor: pointer;
}

/* Motion */
@media (prefers-reduced-motion: no-preference) {
  .rise { animation: rise .7s cubic-bezier(.2, .7, .2, 1) both; }
  .rise:nth-child(2) { animation-delay: .08s; }
  .rise:nth-child(3) { animation-delay: .16s; }
  @keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
}

@media (max-width: 560px) {
  .top { height: 58px; }
  .top nav { gap: 16px; font-size: 13px; }
  main { padding-top: 48px; padding-bottom: 40px; gap: 36px; }
  .logo { width: 104px; height: 104px; border-radius: 24px; }
  .actions { flex-direction: column; width: min(100%, 300px); }
  .btn { justify-content: center; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
}