:root {
  --bg: #05060b;
  --bg2: #0b0e18;
  --card: rgba(16, 22, 40, 0.88);
  --line: rgba(140, 180, 255, 0.14);
  --text: #e8eefc;
  --muted: #8b97b8;
  --accent: #7aa7ff;
  --accent2: #c084fc;
  --warm: #f0abfc;
  --ok: #34d399;
  --warn: #fbbf24;
  --font: "Segoe UI", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(122, 167, 255, 0.18), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(192, 132, 252, 0.14), transparent 50%),
    radial-gradient(700px 500px at 50% 100%, rgba(52, 211, 153, 0.08), transparent 45%),
    var(--bg);
  line-height: 1.55;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: #b7d0ff; }

.shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 4rem;
}

.topnav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}
.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}
.brand span { color: var(--accent2); font-weight: 600; }
.navlinks { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.navlinks a {
  font-size: 0.82rem;
  color: var(--muted);
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid transparent;
}
.navlinks a:hover, .navlinks a.active {
  color: var(--text);
  border-color: var(--line);
  background: rgba(122, 167, 255, 0.08);
}

.hero {
  padding: 1.5rem 0 0.5rem;
}
.kicker {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent2);
  margin-bottom: 0.6rem;
}
h1 {
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.12;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.lede {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  padding: 1.15rem 1.25rem;
  backdrop-filter: blur(10px);
  margin-bottom: 1rem;
}
.card h2, .card h3 { margin-top: 0; }
.grid-2 {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(122,167,255,0.2), rgba(192,132,252,0.15));
  color: var(--text);
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
}
.btn:hover { border-color: rgba(122,167,255,0.45); color: #fff; }
.btn.ghost {
  background: transparent;
}
.btn-row { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.25rem; }

.progress {
  display: flex;
  gap: 0.35rem;
  margin: 1rem 0 1.5rem;
  flex-wrap: wrap;
}
.progress .dot {
  width: 2.2rem;
  height: 0.35rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
}
.progress .dot.on { background: linear-gradient(90deg, var(--accent), var(--accent2)); }
.progress .dot.done { background: rgba(52, 211, 153, 0.55); }

.meter {
  height: 0.55rem;
  background: rgba(255,255,255,0.06);
  border-radius: 999px;
  overflow: hidden;
  margin: 0.5rem 0 0.25rem;
}
.meter > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  width: 0%;
  transition: width 0.6s ease;
}

.choice {
  width: 100%;
  text-align: left;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 0.9rem;
  padding: 0.9rem 1rem;
  margin: 0.45rem 0;
  cursor: pointer;
  font: inherit;
}
.choice:hover { border-color: rgba(122,167,255,0.45); background: rgba(122,167,255,0.08); }
.choice.selected {
  border-color: rgba(192,132,252,0.6);
  box-shadow: 0 0 0 1px rgba(192,132,252,0.25);
}
.choice .sub { display: block; color: var(--muted); font-size: 0.85rem; margin-top: 0.25rem; }

.tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}
.tag.ok { color: var(--ok); border-color: rgba(52,211,153,0.35); }
.tag.warn { color: var(--warn); border-color: rgba(251,191,36,0.35); }

.canvas-wrap {
  position: relative;
  border-radius: 1.1rem;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #050712;
  min-height: 280px;
}
#sky {
  display: block;
  width: 100%;
  height: 320px;
  touch-action: none;
}
.hud {
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  bottom: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: space-between;
  pointer-events: none;
}
.hud span {
  pointer-events: auto;
  background: rgba(5,6,12,0.75);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.timeline {
  position: relative;
  padding-left: 1.25rem;
  border-left: 2px solid var(--line);
  margin: 1rem 0;
}
.timeline .step {
  position: relative;
  margin-bottom: 1.1rem;
  padding-left: 0.5rem;
}
.timeline .step::before {
  content: "";
  position: absolute;
  left: -1.48rem;
  top: 0.35rem;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(122,167,255,0.6);
}

.slider-row {
  display: grid;
  gap: 0.35rem;
  margin: 0.85rem 0;
}
.slider-row label {
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}
input[type=range] { width: 100%; accent-color: var(--accent2); }

.mono { font-family: var(--mono); font-size: 0.86rem; color: #c7d2fe; }
.muted { color: var(--muted); }
.small { font-size: 0.86rem; }
.footer {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

.reveal { display: none; }
.reveal.show { display: block; animation: fade 0.45s ease; }
@keyframes fade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.pill-score {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--accent), var(--warm));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@media (max-width: 560px) {
  #sky { height: 260px; }
  .shell { padding: 1rem 0.9rem 3rem; }
}