/* Thermal Camera — appdepartment.co
   Dark theme carrying the app's own palette: near-black ground, iron-hot yellow accent. */

:root {
  --bg: #0a0a0c;
  --bg-2: #131317;
  --fg: #f5f5f7;
  --fg-2: #9a9aa4;
  --fg-body: #d6d6dc;
  --accent: #f6cb00;
  --accent-hover: #ffe04d;
  --accent-soft: #1d1a08;
  --border: #26262e;
  --radius: 12px;
  --container: 1080px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 12, 0.82);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.logo:hover { color: var(--fg); }

.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  color: var(--fg-2);
  font-size: 15px;
  font-weight: 500;
}
.nav-links a:hover { color: var(--fg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #0a0a0c;
  font-weight: 600;
  font-size: 16px;
  padding: 13px 24px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background 0.2s ease, transform 0.1s ease;
}
.btn:hover { background: var(--accent-hover); color: #0a0a0c; transform: translateY(-1px); }

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-2); color: var(--fg); transform: translateY(-1px); }

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: 112px 0 96px;
}
.hero h1 {
  font-size: 60px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 20px;
}
.hero p {
  color: var(--fg-2);
  font-size: 20px;
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.5;
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Feature row ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  padding: 24px 0 96px;
}
.card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}
.card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.card p { color: var(--fg-2); font-size: 15px; }
.card a { font-weight: 600; font-size: 15px; display: inline-block; margin-top: 12px; }

/* ---------- Legal / content pages ---------- */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 24px 96px;
}
.legal h1 {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.legal .meta {
  color: var(--fg-2);
  font-size: 14px;
  margin-bottom: 40px;
}
.legal h2 {
  font-size: 25px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-top: 44px;
  margin-bottom: 14px;
}
.legal h3 {
  font-size: 19px;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 10px;
}
.legal p, .legal li {
  color: var(--fg-body);
  line-height: 1.75;
  margin-bottom: 14px;
}
.legal ul { list-style: disc; margin: 0 0 16px 22px; }
.legal a { text-decoration: underline; }

.notice {
  background: var(--accent-soft);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 14px;
  color: var(--fg-body);
  margin-bottom: 36px;
}
.notice strong { color: var(--fg); }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
  margin-top: 24px;
}
.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: space-between;
}
.footer-brand .logo { display: block; margin-bottom: 6px; }
.footer-brand p { color: var(--fg-2); font-size: 14px; }
.footer-links h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-2);
  margin-bottom: 12px;
}
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: var(--fg); font-size: 15px; }
.footer-links a:hover { color: var(--accent); }
.copyright {
  color: var(--fg-2);
  font-size: 14px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  body { font-size: 16px; }
  .hero { padding: 72px 0 64px; }
  .hero h1 { font-size: 40px; }
  .hero p { font-size: 18px; }
  .legal h1 { font-size: 34px; }
  .nav-links { gap: 18px; }
  .nav-links a { font-size: 14px; }
}