:root {
  color-scheme: dark;
  --text: #f5f5f4;
  --muted: #9ca3af;
  --body: #d4d4d8;
  --line: rgba(255, 255, 255, 0.1);
  --accent: #0284c7;
  --accent-2: #7dd3fc;
  --danger: #f87171;
  --radius: 1rem;
  --card-accent: #94a3b8;
  --card-btn: #0369a1;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: #000;
  color: var(--text);
  font-family: "Syne", ui-sans-serif, system-ui, sans-serif;
}

.dartboard-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-color: #000;
  background-image:
    radial-gradient(ellipse 88% 72% at 38% 50%, rgba(234, 88, 12, 0.05) 0%, transparent 42%),
    radial-gradient(ellipse 88% 72% at 62% 50%, rgba(37, 99, 235, 0.04) 0%, transparent 42%),
    radial-gradient(ellipse 118% 96% at 50% 50%, rgba(6, 5, 10, 0.92) 0%, rgba(2, 2, 4, 0.98) 28%, #000 52%);
}

.dartboard-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/branding/watermark-dark.png");
  background-repeat: no-repeat;
  background-position: 50% 50%;
  background-size: clamp(320px, 70vmin, 1000px);
  opacity: 0.04;
  filter: drop-shadow(0 12px 28px rgba(0, 0, 0, 0.35));
}

.dartboard-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.42);
}

.page {
  position: relative;
  z-index: 1;
  max-width: 1040px;
  margin: 0 auto;
  padding: 3.25rem 1.5rem 4rem;
}

.top { margin-bottom: 2.4rem; }

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mark {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.03);
  box-shadow:
    0 10px 24px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.kicker {
  margin: 0;
  color: rgba(255, 255, 255, 0.38);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.68rem;
  font-weight: 700;
}

h1, h2 {
  margin: 0.12rem 0 0;
  font-weight: 750;
  letter-spacing: -0.03em;
}

h1 { font-size: 2.05rem; }
h2 { font-size: 1.35rem; }

.lede {
  max-width: 36rem;
  margin: 1.15rem 0 0;
  color: var(--body);
  line-height: 1.6;
  font-weight: 500;
}

.surface,
.gate-card,
.cards article,
.urls {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015)),
    rgba(10, 15, 30, 0.72);
  box-shadow:
    0 14px 30px rgba(2, 6, 23, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
}

.gate {
  display: grid;
  place-items: start;
}

.gate-card {
  width: 100%;
  padding: 1.75rem;
}

.hint, .muted, .meta {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

#code {
  display: block;
  width: 100%;
  margin: 1.25rem 0 0.75rem;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.45);
  color: var(--text);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 1.7rem;
  letter-spacing: 0.42em;
  text-align: center;
}

#code:focus {
  outline: 2px solid rgba(125, 211, 252, 0.55);
  outline-offset: 1px;
}

.gate-card .btn {
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.75rem 1.15rem;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.15s ease;
}

.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: 0.5; cursor: default; filter: none; }

.error { color: var(--danger); margin: 0 0 0.8rem; font-size: 0.92rem; }

.catalog-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.text-btn {
  background: none;
  border: 0;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}

.text-btn:hover { color: var(--text); }

.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.cards article {
  --card-accent: #7dd3fc;
  --card-btn: #0369a1;
  position: relative;
  overflow: hidden;
  padding: 1.35rem 1.25rem 1.2rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.cards article::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--card-accent), transparent 78%);
  opacity: 0.7;
}

.cards article:hover {
  border-color: color-mix(in srgb, var(--card-accent) 42%, rgba(255, 255, 255, 0.12));
  box-shadow:
    0 18px 36px rgba(2, 6, 23, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

.card-head {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  margin-bottom: 0.2rem;
}

.card-titles {
  min-width: 0;
  flex: 1;
}

.os-pill {
  flex: 0 0 auto;
  margin-left: auto;
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  min-height: 1.45rem;
  padding: 0.12rem 0.55rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--card-accent) 45%, transparent);
  background: color-mix(in srgb, var(--card-accent) 14%, rgba(0, 0, 0, 0.35));
  color: var(--text);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  color: var(--card-accent);
  background: color-mix(in srgb, var(--card-accent) 12%, rgba(255, 255, 255, 0.03));
  border: 1px solid color-mix(in srgb, var(--card-accent) 28%, transparent);
}

.card-icon svg {
  width: 22px;
  height: 22px;
  display: block;
}

.card-head .kicker {
  color: var(--card-accent);
  letter-spacing: 0.16em;
}

.cards h3 {
  margin: 0.08rem 0 0;
  font-size: 1.28rem;
}

.cards .blurb {
  color: var(--body);
  line-height: 1.55;
  flex: 1;
  font-weight: 500;
}

.version {
  margin: 0.7rem 0 0;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--card-accent);
}

.cards article .btn {
  background: var(--card-btn);
}

.card--windows { --card-accent: #7dd3fc; --card-btn: #0369a1; }
.card--linux { --card-accent: #fdba74; --card-btn: #c2410c; }
.card--classic { --card-accent: #86efac; --card-btn: #15803d; }
.card--tv { --card-accent: #c4b5fd; --card-btn: #6d28d9; }
.card--camera { --card-accent: #f9a8d4; --card-btn: #be185d; }

.card.is-loading {
  pointer-events: none;
}

.card.is-loading .shimmer {
  color: transparent;
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.06) 25%, rgba(255, 255, 255, 0.16) 50%, rgba(255, 255, 255, 0.06) 75%);
  background-size: 200% 100%;
  animation: card-shimmer 1.15s ease-in-out infinite;
}

.card.is-failed .version { color: var(--danger); }

@keyframes card-shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .card.is-loading .shimmer { animation: none; }
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-top: 0.85rem;
}

.history {
  margin-top: 1rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}

.history ul {
  list-style: none;
  margin: 0.55rem 0 0;
  padding: 0;
}

.history li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.35rem 0;
  font-size: 0.9rem;
}

.history a {
  color: var(--card-accent);
  text-decoration: none;
  font-weight: 700;
  white-space: nowrap;
}

.history a:hover { text-decoration: underline; }

.urls {
  margin-top: 1.25rem;
  padding: 1.25rem 1.4rem;
}

.urls ul { margin: 0.6rem 0; padding-left: 1.1rem; color: var(--body); }

code {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.8rem;
  color: #93c5fd;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

[hidden] { display: none !important; }

@media (max-width: 860px) {
  .cards { grid-template-columns: 1fr; }
  .page { padding-top: 2rem; }
}