:root {
  --ink: #1f1f24;
  --paper: #fff8ef;
  --panel: #fffdf9;
  --accent: #0f7b6d;
  --accent-2: #ff6f3c;
  --accent-3: #0a4f8b;
  --muted: #615f67;
  --line: #dfd8ce;
  --ok: #2c8e4f;
  --warn: #b7791f;
  --danger: #c13d2c;
  --shadow: 0 7px 18px rgba(22, 18, 12, 0.07);
  --shadow-lift: 0 14px 30px rgba(22, 18, 12, 0.12);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  font-size: 0.86rem;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 10%, rgba(255, 226, 190, 0.68) 0%, transparent 34%),
    radial-gradient(circle at 80% 20%, rgba(212, 242, 234, 0.72) 0%, transparent 30%),
    linear-gradient(160deg, var(--paper), #f6efe6);
}

a {
  color: var(--accent);
}

code {
  background: rgba(15, 123, 109, 0.08);
  border-radius: 5px;
  padding: 0.05rem 0.3rem;
  font-size: 0.92em;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: 0.6rem;
  top: -3rem;
  z-index: 10;
  padding: 0.4rem 0.7rem;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
}

.skip-link:focus {
  top: 0.6rem;
}

.bg-orb {
  position: fixed;
  border-radius: 999px;
  filter: blur(42px);
  opacity: 0.2;
  z-index: -1;
  animation: orb-drift 18s ease-in-out infinite alternate;
}

.bg-orb-a {
  width: 195px;
  height: 195px;
  background: #ff8d4d;
  top: -70px;
  right: 5vw;
}

.bg-orb-b {
  width: 210px;
  height: 210px;
  background: #1cb69a;
  bottom: -95px;
  left: 4vw;
  animation-duration: 23s;
  animation-direction: alternate-reverse;
}

@keyframes orb-drift {
  from {
    transform: translate(0, 0) scale(1);
  }
  to {
    transform: translate(-6vw, 9vh) scale(1.25);
  }
}

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.55rem;
  padding: 0.62rem clamp(0.65rem, 2vw, 1.35rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.03em;
}

.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  box-shadow: 0 3px 8px rgba(10, 79, 139, 0.25);
  transition: transform 0.3s var(--ease);
}

.brand:hover .brand-mark {
  transform: rotate(-8deg) scale(1.08);
}

.brand-sub {
  font-weight: 400;
  color: var(--muted);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--ink);
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  font-size: 0.8rem;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.site-nav a:hover {
  background: rgba(15, 123, 109, 0.1);
}

.site-nav a[aria-current="page"] {
  background: var(--ink);
  color: #fff;
}

/* ---------- Page + hero ---------- */

.page {
  width: min(880px, 94vw);
  margin: 0 auto 1.25rem;
  flex: 1 0 auto;
}

.hero {
  background: linear-gradient(135deg, #fffefc, #f4f8f7);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 12px;
  padding: clamp(0.7rem, 1.6vw, 1.1rem);
}

.hero-hub,
.hero-lost {
  position: relative;
  overflow: hidden;
  padding: clamp(1rem, 3vw, 1.7rem);
  background:
    radial-gradient(circle at 100% 0%, rgba(255, 111, 60, 0.14) 0%, transparent 42%),
    radial-gradient(circle at 0% 100%, rgba(15, 123, 109, 0.14) 0%, transparent 45%),
    linear-gradient(135deg, #fffefc, #f4f8f7);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.62rem;
  margin: 0;
  color: var(--accent);
}

h1,
h2,
h3 {
  margin: 0.16rem 0 0.5rem;
  font-family: "Baskervville", Georgia, serif;
  font-weight: 400;
}

h1 {
  font-size: clamp(1.05rem, 2.2vw, 1.52rem);
}

h2 {
  font-size: clamp(0.88rem, 1.5vw, 1.04rem);
}

h3 {
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
}

.wordmark {
  display: grid;
  gap: 0.1rem;
  margin: 0.3rem 0 0.55rem;
}

.wordmark-mark {
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  font-weight: 700;
  font-size: clamp(2rem, 6vw, 2.8rem);
  line-height: 1;
  letter-spacing: -0.02em;
  background: linear-gradient(100deg, var(--accent), var(--accent-3), var(--accent-2), var(--accent));
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: wordmark-shift 9s ease-in-out infinite alternate;
}

@keyframes wordmark-shift {
  from {
    background-position: 0% 50%;
  }
  to {
    background-position: 100% 50%;
  }
}

.wordmark-sub {
  font-size: clamp(1rem, 2.4vw, 1.4rem);
}

.lede {
  max-width: 68ch;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.hero-stats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.2rem;
  margin: 0.95rem 0 0;
  padding: 0.7rem 0 0;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

.hero-stats strong {
  color: var(--ink);
  font-size: 1.05rem;
  margin-right: 0.2rem;
}

/* ---------- Buttons ---------- */

.btn {
  border: 0;
  cursor: pointer;
  border-radius: 8px;
  min-height: 2.05rem;
  padding: 0.3rem 0.62rem;
  font-family: inherit;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), filter 0.18s ease, background-color 0.18s ease;
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn:active:not(:disabled) {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-lg {
  min-height: 2.35rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.86rem;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #0f9f8d);
  box-shadow: 0 6px 14px rgba(15, 123, 109, 0.22);
}

.btn-primary:hover {
  filter: brightness(1.05);
  box-shadow: 0 9px 20px rgba(15, 123, 109, 0.3);
}

.btn-secondary {
  color: var(--ink);
  background: #f2ebe1;
}

.btn-ghost {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  background: #fff;
  box-shadow: var(--shadow);
}

.btn-surprise {
  background: linear-gradient(135deg, var(--accent-2), #e0457b 55%, var(--accent-3));
  box-shadow: 0 6px 16px rgba(224, 69, 123, 0.28);
}

.btn-surprise:hover {
  box-shadow: 0 10px 24px rgba(224, 69, 123, 0.36);
}

.btn-surprise .dice {
  transition: transform 0.45s var(--ease);
}

.btn-surprise:hover .dice {
  transform: rotate(200deg);
}

/* ---------- Lab browser ---------- */

.lab-browser {
  margin-top: 1.1rem;
  scroll-margin-top: 1rem;
}

.lab-browser-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.lab-browser-head h2 {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.filter-bar[hidden] {
  display: none;
}

.chip {
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.22rem 0.62rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.chip:hover {
  border-color: var(--accent);
}

.chip[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.chip-count {
  font-size: 0.7rem;
  opacity: 0.65;
}

.lab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.65rem;
}

.lab-card {
  --lab-accent: var(--accent);
  --lab-accent-2: var(--accent-2);
  --lab-soft: #dff3ee;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
  padding: 0.85rem 0.85rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    radial-gradient(circle at 100% 0%, var(--lab-soft) 0%, transparent 55%),
    var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s ease;
  animation: card-in 0.5s var(--ease) backwards;
}

.lab-card[hidden] {
  display: none;
}

.lab-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--lab-accent), var(--lab-accent-2));
}

.lab-card:hover,
.lab-card:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
  border-color: color-mix(in srgb, var(--lab-accent) 35%, var(--line));
}

.lab-card:nth-child(2) { animation-delay: 0.04s; }
.lab-card:nth-child(3) { animation-delay: 0.08s; }
.lab-card:nth-child(4) { animation-delay: 0.12s; }
.lab-card:nth-child(5) { animation-delay: 0.16s; }
.lab-card:nth-child(6) { animation-delay: 0.2s; }
.lab-card:nth-child(7) { animation-delay: 0.24s; }
.lab-card:nth-child(n + 8) { animation-delay: 0.28s; }

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.lab-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.2rem;
}

.lab-badge {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 11px;
  color: var(--lab-accent);
  background: var(--lab-soft);
  border: 1px solid color-mix(in srgb, var(--lab-accent) 18%, transparent);
  transition: transform 0.3s var(--ease);
}

.lab-card:hover .lab-badge {
  transform: rotate(-6deg) scale(1.06);
}

.lab-icon {
  width: 1.55rem;
  height: 1.55rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.14rem 0.5rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  color: var(--muted);
}

.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: currentColor;
}

.status-pill--ok {
  color: var(--ok);
}

.status-pill--ok .status-dot {
  animation: pulse 2.4s ease-out infinite;
}

.status-pill--warn {
  color: var(--warn);
}

.status-pill--error {
  color: var(--danger);
}

.status-pill--off {
  color: var(--muted);
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 55%, transparent);
  }
  70%,
  100% {
    box-shadow: 0 0 0 0.4rem transparent;
  }
}

.lab-kind {
  margin: 0;
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--lab-accent);
}

.lab-card h3 {
  margin: 0;
}

.lab-tagline {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.4;
}

.lab-summary,
.lab-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.38;
}

.lab-hint {
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  background: rgba(183, 121, 31, 0.08);
  border: 1px dashed rgba(183, 121, 31, 0.35);
  overflow-wrap: anywhere;
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-top: 0.25rem;
}

.quick-links a {
  position: relative;
  z-index: 1;
  font-size: 0.74rem;
  text-decoration: none;
  color: var(--lab-accent);
  background: color-mix(in srgb, var(--lab-soft) 70%, #fff);
  border: 1px solid color-mix(in srgb, var(--lab-accent) 20%, transparent);
  border-radius: 999px;
  padding: 0.12rem 0.5rem;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.quick-links a:hover {
  background: var(--lab-accent);
  color: #fff;
}

.lab-card-actions {
  margin-top: auto;
  padding-top: 0.55rem;
}

.btn-lab {
  width: 100%;
  color: #fff;
  background: linear-gradient(135deg, var(--lab-accent), color-mix(in srgb, var(--lab-accent) 70%, var(--lab-accent-2)));
}

/* The card itself lifts on hover; a transform here would re-anchor the
   stretched ::after below and make hover flicker. */
.btn-lab:hover:not(:disabled) {
  transform: none;
  filter: brightness(1.05);
}

/* Stretch the main card link so the whole card is clickable. */
.btn-lab::after {
  content: "";
  position: absolute;
  inset: 0;
}

.btn-arrow {
  transition: transform 0.2s var(--ease);
}

.lab-card:hover .btn-arrow {
  transform: translateX(3px);
}

.lab-card--missing,
.lab-card--disabled,
.lab-card--failed {
  background: var(--panel);
}

.lab-card--missing .lab-badge,
.lab-card--disabled .lab-badge,
.lab-card--failed .lab-badge {
  filter: grayscale(0.7);
  opacity: 0.75;
}

.lab-card-actions .btn-secondary {
  width: 100%;
}

.filter-empty {
  color: var(--muted);
  text-align: center;
  padding: 1rem;
}

/* ---------- Shared content pages ---------- */

.grid {
  margin-top: 0.62rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.52rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 0.62rem;
}

.status {
  margin-top: 0.3rem;
  font-size: 0.78rem;
}

.status-ok {
  color: var(--ok);
}

.status-error {
  color: var(--danger);
}

.detail-grid {
  margin-top: 0.62rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.52rem;
}

.detail-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 0.62rem;
  display: grid;
  gap: 0.36rem;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.detail-grid .detail-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.detail-card p,
.prose-card p,
.toc-route-copy span {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.36;
}

.detail-card-wide {
  grid-column: 1 / -1;
}

.stack {
  margin-top: 0.62rem;
  display: grid;
  gap: 0.52rem;
}

.prose-card {
  margin-top: 0.62rem;
  display: grid;
  gap: 0.36rem;
}

.toc-route-list {
  display: grid;
  gap: 0.38rem;
}

.toc-route {
  display: grid;
  grid-template-columns: minmax(120px, 170px) minmax(0, 1fr);
  gap: 0.48rem;
  align-items: start;
  padding: 0.32rem 0.35rem 0;
  border-top: 1px solid rgba(223, 216, 206, 0.8);
  border-radius: 6px;
}

.toc-route:first-child {
  border-top: 0;
  padding-top: 0;
}

.toc-route-path {
  align-self: start;
  overflow-wrap: anywhere;
}

.toc-route-copy {
  display: grid;
  gap: 0.12rem;
}

.toc-route-copy strong {
  font-size: 0.82rem;
}

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

.site-footer {
  padding: 0 0 0.9rem;
}

.footer-inner {
  width: min(880px, 94vw);
  margin: 0 auto;
  padding: 0.55rem 0.7rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.48rem;
  flex-wrap: wrap;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 253, 249, 0.92);
  box-shadow: var(--shadow);
}

.footer-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  display: inline-flex;
  align-items: center;
  gap: 0.34rem;
}

.copyleft-mark {
  width: 16px;
  height: 16px;
  max-width: 16px;
  max-height: 16px;
  flex: 0 0 auto;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.34rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--ink);
  padding: 0.18rem 0.42rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.84);
  font-size: 0.76rem;
  transition: background-color 0.18s ease;
}

.footer-links a:hover {
  background: rgba(15, 123, 109, 0.1);
}

.footer-links a[aria-current="page"] {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- Responsive + motion preferences ---------- */

@media (max-width: 680px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .toc-route {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    width: min(96vw, 880px);
    align-items: flex-start;
  }

  .lab-grid {
    grid-template-columns: 1fr;
  }
}

@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;
  }
}