:root {
  color-scheme: dark;
  /* Liquid Metal Industrial — aligned with client/src/styles/tokens/liquid-metal.css */
  --lm-graphite: hsl(220, 10%, 7%);
  --lm-gunmetal: hsl(215, 12%, 13%);
  --lm-charcoal: hsl(218, 9%, 17%);
  --lm-warm-white: hsl(210, 18%, 95%);
  --lm-muted: hsl(215, 10%, 58%);
  --lm-stainless: hsl(210, 10%, 78%);
  --lm-edge: hsl(210, 15%, 78% / 0.14);
  --lm-emerald: hsl(158, 64%, 42%);
  --bg: var(--lm-graphite);
  --card: linear-gradient(
    155deg,
    hsl(215, 12%, 16%) 0%,
    hsl(220, 10%, 10%) 48%,
    hsl(218, 11%, 13%) 100%
  );
  --border: var(--lm-edge);
  --text: var(--lm-warm-white);
  --muted: var(--lm-muted);
  --accent: var(--lm-stainless);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family:
    "DM Sans",
    system-ui,
    -apple-system,
    sans-serif;
  background: radial-gradient(
    ellipse 120% 80% at 50% -20%,
    hsl(215, 12%, 16%) 0%,
    var(--lm-graphite) 55%
  );
  color: var(--text);
}

.shell {
  max-width: 960px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
}

.shell-narrow {
  max-width: 40rem;
}

.hero {
  margin-bottom: 2.5rem;
  text-align: center;
}

.hero-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.hero-brand img {
  width: 4.5rem;
  height: 4.5rem;
  object-fit: contain;
  border-radius: 0.75rem;
  border: 1px solid var(--lm-edge);
  background: linear-gradient(
    160deg,
    hsl(215, 11%, 15%) 0%,
    hsl(220, 10%, 11%) 100%
  );
  padding: 0.35rem;
  box-shadow:
    inset 0 1px 0 hsl(210, 20%, 100% / 0.05),
    0 8px 32px hsl(0, 0% / 0.35);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--lm-muted);
  margin: 0;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

.lead {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.55;
  margin: 0 auto;
  max-width: 36rem;
}

.grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  background: var(--card);
  color: inherit;
  text-decoration: none;
  min-height: 11rem;
  box-shadow:
    inset 0 1px 0 hsl(210, 20%, 100% / 0.05),
    inset 0 -1px 0 hsl(0, 0% / 0.28);
  transition:
    border-color 0.15s,
    transform 0.15s,
    box-shadow 0.15s;
}

.card:hover {
  border-color: hsl(210, 15%, 78% / 0.28);
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 hsl(210, 20%, 100% / 0.05),
    0 8px 24px hsl(0, 0% / 0.35);
}

.card-active {
  border-color: hsl(210, 15%, 78% / 0.32);
  box-shadow:
    inset 0 1px 0 hsl(210, 20%, 100% / 0.08),
    0 0 0 1px hsl(210, 15%, 78% / 0.12),
    0 8px 32px hsl(0, 0% / 0.4);
}

.card h2 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
  flex: 1;
}

.card-tag {
  align-self: flex-start;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  background: hsl(158, 64%, 42% / 0.15);
  color: var(--lm-emerald);
  border: 1px solid hsl(158, 64%, 42% / 0.35);
}

.card-tag-muted {
  background: hsl(218, 9%, 17%);
  color: var(--muted);
  border-color: var(--lm-edge);
}

.card-cta {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.foot {
  margin-top: 2.5rem;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

.foot code {
  color: var(--lm-stainless);
}

.back {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
}

.back:hover {
  text-decoration: underline;
}

.muted {
  color: var(--muted);
  font-size: 0.95rem;
}