/* Deversity site — one stylesheet for all pages. Dark developer-tool theme. */

:root {
  --bg: #0a0f16;
  --panel: #0f1722;
  --panel-2: #121c29;
  --line: #1d2a3a;
  --line-soft: #16202e;
  --ink: #e9eef5;
  --ink-soft: #c9d3de;
  --muted: #97a4b4;
  --faint: #6b7a8c;
  --accent: #3ecf8e;
  --accent-bright: #7ce3b8;
  --accent-ink: #06130c;
  --accent-soft: rgba(62, 207, 142, 0.12);
  --amber: #f0b34e;
  --red: #ff7373;
  --blue: #7fb4e8;
  --purple: #d2a8ff;
  --radius: 14px;
  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", "Fira Code", Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(1100px 500px at 78% -120px, var(--accent-soft), transparent 60%),
    radial-gradient(900px 480px at -12% -80px, rgba(127, 180, 232, 0.06), transparent 60%),
    var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--panel-2);
  border: 1px solid var(--line-soft);
  padding: 2px 6px;
  border-radius: 5px;
}

/* ---------- Header ---------- */

.site-head {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 15, 22, 0.78);
  backdrop-filter: blur(14px) saturate(1.5);
  -webkit-backdrop-filter: blur(14px) saturate(1.5);
  border-bottom: 1px solid var(--line-soft);
}

.nav {
  max-width: 1060px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 1.06rem;
  color: var(--ink);
  letter-spacing: 0.01em;
  margin-right: auto;
}
.brand:hover { text-decoration: none; }
.brand .mark { color: var(--accent); display: block; }

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
  align-items: center;
}
.nav-links a {
  position: relative;
  color: var(--muted);
  font-size: 0.93rem;
  padding: 4px 0;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1.5px;
  background: var(--accent);
  transition: right 0.18s ease;
}
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-links a:hover::after { right: 0; }
.nav-links a.active { color: var(--ink); }
.nav-links a.active::after { right: 0; }

/* GitHub gets a pill button, no underline */
.nav-links a[href^="https://github"] {
  border: 1px solid var(--line);
  padding: 6px 14px;
  border-radius: 999px;
  color: var(--ink);
  font-weight: 550;
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.nav-links a[href^="https://github"]::after { display: none; }
.nav-links a[href^="https://github"]:hover {
  border-color: var(--faint);
  background: rgba(255, 255, 255, 0.04);
}

/* ---------- Layout ---------- */

main {
  max-width: 1060px;
  margin: 0 auto;
  padding: 40px 24px 88px;
}

main.prose { max-width: 780px; }

h1 {
  font-size: clamp(1.9rem, 1.4rem + 1.8vw, 2.4rem);
  line-height: 1.15;
  margin: 0 0 10px;
  letter-spacing: -0.02em;
  font-weight: 750;
}
h2 {
  font-size: 1.32rem;
  margin: 56px 0 16px;
  letter-spacing: -0.01em;
}
h3 { font-size: 1.04rem; margin: 0 0 6px; font-weight: 650; }

.sub { color: var(--muted); margin-top: 0; font-size: 1.02rem; }

.prose h1 { font-size: 1.85rem; }
.prose h2 {
  font-size: 1.18rem;
  margin: 42px 0 12px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}
.prose p { color: var(--ink-soft); }
.prose a { text-decoration: underline; text-underline-offset: 3px; }
.prose .sub {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--faint);
}

/* Marketing pages get code-comment section headings */
.mkt h2::before {
  content: "// ";
  font-family: var(--mono);
  color: var(--accent);
  font-weight: 400;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 52px;
  align-items: center;
  padding: 46px 0 58px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -60px -24px auto -24px;
  height: 460px;
  pointer-events: none;
  z-index: -1;
  background:
    linear-gradient(90deg, transparent 0%, var(--accent-soft) 35%, transparent 70%),
    repeating-linear-gradient(180deg, rgba(231, 237, 244, 0.045) 0 1px, transparent 1px 54px);
  background-size: 220% 100%, auto;
  -webkit-mask-image: radial-gradient(75% 100% at 50% 0%, #000 25%, transparent 98%);
  mask-image: radial-gradient(75% 100% at 50% 0%, #000 25%, transparent 98%);
  animation: sweep 10s linear infinite;
}

@keyframes sweep {
  from { background-position: -60% 0, 0 0; }
  to   { background-position: 160% 0, 0 0; }
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.02em;
  margin: 0 0 12px;
}

.hero h1 {
  font-size: clamp(2.3rem, 1.5rem + 2.8vw, 3.2rem);
  line-height: 1.07;
  letter-spacing: -0.03em;
  font-weight: 800;
}
.hero h1 .hl {
  color: var(--accent);
  background: linear-gradient(95deg, var(--accent) 10%, var(--accent-bright) 55%, var(--accent) 95%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lede { color: var(--muted); font-size: 1.08rem; max-width: 48ch; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

.hero-meta {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--faint);
  letter-spacing: 0.01em;
  margin: 20px 0 0;
}

.cta {
  display: inline-block;
  background: linear-gradient(180deg, #52dd9e, #2fbd7f);
  color: var(--accent-ink);
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 700;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 8px 24px rgba(62, 207, 142, 0.18);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.cta:hover {
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 10px 32px rgba(62, 207, 142, 0.32);
}
.cta:active { transform: translateY(0); }

.ghost {
  display: inline-block;
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 550;
  background: rgba(255, 255, 255, 0.03);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.ghost:hover {
  text-decoration: none;
  border-color: var(--faint);
  background: rgba(255, 255, 255, 0.05);
}

/* ---------- Terminal card ---------- */

.term {
  position: relative;
  margin: 0;
  background: linear-gradient(180deg, #101a27, #0d141f);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  font-family: var(--mono);
  font-size: 0.87rem;
}
.term::after {
  content: "";
  position: absolute;
  top: 0;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(62, 207, 142, 0.55), transparent);
}

.term-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--line-soft);
}
.term-bar .dot { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.term-bar .dot:nth-child(2) { background: #febc2e; }
.term-bar .dot:nth-child(3) { background: #28c840; }
.term-title { margin-left: 8px; color: var(--faint); font-size: 0.8rem; }

.term-status {
  margin-left: auto;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--red);
  background: rgba(255, 115, 115, 0.09);
  border: 1px solid rgba(255, 115, 115, 0.25);
  border-radius: 999px;
  padding: 2px 9px;
}

.term-code {
  margin: 0;
  padding: 19px 19px 17px;
  overflow-x: auto;
  line-height: 1.6;
  color: var(--ink);
}
.term-code::-webkit-scrollbar { height: 8px; }
.term-code::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }
.term-code .ann { color: var(--amber); }
.term-code .kw  { color: var(--blue); }
.term-code .fn  { color: var(--accent); }
.term-code .num { color: var(--purple); }

.term-report {
  border-top: 1px dashed var(--line);
  padding: 12px 19px 15px;
  background: rgba(0, 0, 0, 0.26);
}
.rep-line { margin: 6px 0; color: var(--muted); font-size: 0.82rem; }
.rep-line > span { font-weight: 600; margin-right: 8px; }
.rep-line.fail > span { color: var(--red); }
.rep-line.ok > span { color: var(--accent); }

/* ---------- Stats strip ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  padding: 26px 0;
  margin: 16px 0 8px;
}
.stats > div { text-align: center; }
.stats > div + div { border-left: 1px solid var(--line-soft); }
.stats strong {
  display: block;
  font-family: var(--mono);
  font-size: 1.7rem;
  color: var(--accent);
  font-weight: 650;
}
.stats span { color: var(--faint); font-size: 0.88rem; }

/* ---------- Cards ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
  gap: 14px;
  margin: 18px 0;
}

.card {
  background: linear-gradient(180deg, var(--panel-2), var(--panel) 75%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.grid .card:hover {
  transform: translateY(-3px);
  border-color: #2a3b52;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.35);
}
.card p { color: var(--muted); font-size: 0.93rem; margin: 0; }
.card h3 { margin: 4px 0 8px; }

/* Category colours: race/red, deadlock/amber, signal/blue, publication/purple */
.cat-race   { --cat: var(--red);    --cat-soft: rgba(255, 115, 115, 0.10); --cat-line: rgba(255, 115, 115, 0.28); }
.cat-lock   { --cat: var(--amber);  --cat-soft: rgba(240, 179, 78, 0.10);  --cat-line: rgba(240, 179, 78, 0.28); }
.cat-signal { --cat: var(--blue);   --cat-soft: rgba(127, 180, 232, 0.10); --cat-line: rgba(127, 180, 232, 0.28); }
.cat-pub    { --cat: var(--purple); --cat-soft: rgba(210, 168, 255, 0.10); --cat-line: rgba(210, 168, 255, 0.28); }
.catch .card:hover { border-color: var(--cat-line); }

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.ico {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: var(--cat, var(--accent));
  background: var(--cat-soft, var(--accent-soft));
  border: 1px solid var(--cat-line, var(--line));
}
.ico svg { display: block; }

.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--cat, var(--red));
  background: var(--cat-soft, rgba(255, 115, 115, 0.09));
  border: 1px solid var(--cat-line, rgba(255, 115, 115, 0.25));
  border-radius: 5px;
  padding: 2px 8px;
}

.steps .num {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 650;
  margin-bottom: 12px;
}
.steps .num::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
}

/* ---------- Licensing cards ---------- */

.lic { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.lic .card.hot {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(62, 207, 142, 0.07), var(--panel-2) 45%, var(--panel));
  box-shadow: 0 0 0 1px var(--accent-soft), 0 20px 56px rgba(0, 0, 0, 0.4);
}
.lic .price-line {
  font-family: var(--mono);
  color: var(--ink);
  font-size: 0.95rem;
  margin: 0 0 10px;
}
.lic .cta { margin-top: 16px; }

/* ---------- Tables (pricing) ---------- */

.table-wrap { overflow-x: auto; margin: 24px 0; }
.table-wrap table { margin: 0; }

table {
  border-collapse: collapse;
  width: 100%;
  margin: 22px 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
th, td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-soft);
}
th {
  font-family: var(--mono);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faint);
  background: var(--panel-2);
  font-weight: 600;
  padding: 12px 18px;
}
td:first-child { font-weight: 600; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--panel-2); }
td.price { font-family: var(--mono); color: var(--accent); font-weight: 600; white-space: nowrap; }

/* ---------- Callout ---------- */

.note {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 15px 20px;
  color: var(--muted);
  font-size: 0.94rem;
}

/* ---------- Footer ---------- */

.site-foot {
  border-top: 1px solid var(--line-soft);
  color: var(--faint);
  font-size: 0.88rem;
}
.site-foot .inner {
  max-width: 1060px;
  margin: 0 auto;
  padding: 26px 24px 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
}
.site-foot nav { display: flex; flex-wrap: wrap; gap: 18px; }
.site-foot a { color: var(--faint); }
.site-foot a:hover { color: var(--ink); }

/* ---------- Buy buttons (Paddle.js checkout) ---------- */

.buy-col { width: 1%; white-space: nowrap; text-align: right; }
.buy {
  font: inherit;
  font-size: 0.88rem;
  font-weight: 650;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 8px 18px;
  cursor: pointer;
  display: inline-block;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}
.buy:hover {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 4px 16px rgba(62, 207, 142, 0.25);
  text-decoration: none;
}
.buy-link { text-decoration: none; }

/* ---------- Responsive ---------- */

@media (max-width: 880px) {
  main { padding: 32px 20px 72px; }
  .hero { grid-template-columns: 1fr; gap: 34px; padding-top: 22px; }
  h2 { margin-top: 48px; }
}

@media (max-width: 640px) {
  .stats { grid-template-columns: 1fr; gap: 18px; }
  .stats > div + div {
    border-left: none;
    border-top: 1px solid var(--line-soft);
    padding-top: 18px;
  }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero::before { animation: none; }
  .card, .cta, .ghost, .buy, .nav-links a::after { transition: none; }
  .grid .card:hover, .cta:hover, .cta:active { transform: none; }
}