/* TstoneLab site — minimal landing styles (full design arrives with landing content). */

:root {
  --bg: #ffffff;
  --fg: #1a1f24;
  --muted: #5a6672;
  --accent: #0b6bcb;
  --accent-fg: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1418;
    --fg: #e6ebf0;
    --muted: #9aa7b2;
    --accent: #3d9df6;
    --accent-fg: #0f1418;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  max-width: 42rem;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: 3rem;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}

.sub {
  margin: 0 0 2rem;
  color: var(--muted);
}

.cta {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 600;
  text-decoration: none;
}

.cta:hover {
  filter: brightness(1.1);
}

.note {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--muted);
}

footer {
  padding: 1.25rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

footer a {
  color: inherit;
}