:root {
  --bg: #0a0c10;
  --card: #141922;
  --border: #2a3344;
  --text: #eef3fa;
  --muted: #93a0b5;
  --accent: #5b9fd4;
  --gold: #d4a84b;
  --danger: #e85d6c;
  --font: "DM Sans", system-ui, sans-serif;
  --display: "Syne", var(--font);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, #1e2a40 0%, transparent 55%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

a { color: var(--accent); }
.wrap { max-width: 960px; margin: 0 auto; padding: 28px 20px 64px; }

.banner {
  background: linear-gradient(90deg, #3d2a12, #1a2230);
  border: 1px solid color-mix(in srgb, var(--gold) 45%, transparent);
  color: #f5e6c8;
  text-align: center;
  padding: 10px 16px;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0 28px;
}
.logo {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}
.logo span { color: var(--gold); }
.nav-links { display: flex; gap: 18px; font-size: 0.9rem; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover { color: var(--text); }

.hero {
  padding: 48px 0 32px;
  text-align: center;
}
.hero h1 {
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
  margin: 0 0 12px;
  line-height: 1.15;
}
.hero p {
  color: var(--muted);
  max-width: 540px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
}
.cta {
  display: inline-flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
  font: inherit;
}
.btn-primary {
  background: linear-gradient(180deg, #6aade0, #3d7eb0);
  border-color: #3d7eb0;
  color: #fff;
}
.btn-ghost:hover { border-color: var(--accent); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 40px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
}
.card h3 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 1.05rem;
}
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; }

footer {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

/* Sign-in (lab target app) */
.auth-wrap {
  min-height: calc(100vh - 40px);
  display: grid;
  place-items: center;
  padding: 24px;
}
.auth-card {
  width: min(400px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}
.auth-card h1 {
  font-family: var(--display);
  font-size: 1.35rem;
  margin: 0 0 6px;
}
.auth-card .sub { color: var(--muted); font-size: 0.9rem; margin-bottom: 22px; }
label { display: block; font-size: 0.8rem; color: var(--muted); margin-bottom: 6px; }
input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 11px 12px;
  margin-bottom: 14px;
  font: inherit;
}
input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
}
.notice {
  background: color-mix(in srgb, var(--gold) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--gold) 35%, transparent);
  color: #f0d9a0;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 0.8rem;
  margin-bottom: 16px;
}
.ok-box {
  text-align: center;
  max-width: 480px;
  margin: 80px auto;
  padding: 32px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
}
.ok-box h1 { font-family: var(--display); color: #7fd99a; }

.error-box {
  background: color-mix(in srgb, var(--danger) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--danger) 40%, transparent);
  color: #f5a8b0;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 0.85rem;
  margin-bottom: 14px;
}

.flow {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.flow-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
}
.flow-step .n {
  flex: 0 0 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--accent) 25%, transparent);
  color: var(--accent);
  font-weight: 700;
}
.flow-step p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.plain-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}
.plain-list.numbered { padding-left: 1.25rem; }
.plain-list li { margin: 6px 0; }

.codeblock {
  background: #0d1118;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.78rem;
  line-height: 1.55;
  color: #c8d4e6;
  margin: 0;
}

code {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.88em;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  padding: 1px 6px;
  border-radius: 4px;
}

@media (max-width: 640px) {
  .nav-links { flex-wrap: wrap; gap: 10px; font-size: 0.82rem; }
}