/* Missing Bulb — site styles. Hand-authored, no build step. */

:root {
  --bg: #fffdf7;
  --surface: #ffffff;
  --text: #2b2620;
  --muted: #6b6257;
  --accent: #b8860b;
  --accent-strong: #8a6508;
  --border: #e8e0d2;
  --shadow: 0 1px 3px rgba(43, 38, 32, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1914;
    --surface: #26221b;
    --text: #f0e9dd;
    --muted: #b0a695;
    --accent: #f0b429;
    --accent-strong: #ffd166;
    --border: #3a342a;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
}

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

a:hover,
a:focus-visible {
  color: var(--accent);
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
}

.site-header nav {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--text);
}

.brand::before {
  content: "💡 ";
}

.site-header ul {
  list-style: none;
  display: flex;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
}

.site-header ul a {
  text-decoration: none;
}

main {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
}

section {
  padding: 2.5rem 0 0.5rem;
}

.hero {
  padding: 4rem 0 2rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  line-height: 1.2;
  margin: 0 0 1rem;
}

.tagline {
  max-width: 42rem;
  margin: 0 auto 1.75rem;
  font-size: 1.1rem;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: 0.5rem;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  text-decoration: none;
}

.button:hover,
.button:focus-visible {
  background: var(--accent-strong);
  color: var(--bg);
}

.button-secondary {
  background: transparent;
  color: var(--accent-strong);
  border: 1px solid var(--accent);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: var(--accent);
  color: var(--bg);
}

h2 {
  font-size: 1.6rem;
  margin: 0 0 0.75rem;
}

.section-lede {
  color: var(--muted);
  max-width: 44rem;
  margin-top: 0;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1rem;
  margin: 1.25rem 0 0;
  padding: 0;
}

.project-list {
  list-style: none;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.1rem 1.25rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.card-featured {
  border-color: var(--accent);
  grid-column: 1 / -1;
}

.demonstrates {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--accent-strong);
}

.section-cta {
  margin-top: 1.5rem;
}

.legal {
  max-width: 44rem;
  padding: 2.5rem 0 1rem;
}

.legal h1 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  margin: 0 0 0.75rem;
}

.legal h2 {
  font-size: 1.2rem;
  margin: 2rem 0 0.5rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}