/* appdev.tr — Obsidian Instrument aesthetic
   Matches DevToolkit app design tokens */

:root {
  --surface: #131313;
  --surface-lowest: #0E0E0E;
  --surface-low: #1C1B1B;
  --surface-container: #201F1F;
  --surface-high: #2A2A2A;
  --primary: #AAC7FF;
  --secondary: #47E266;
  --on-surface: #E5E2E1;
  --on-surface-variant: #C0C6D6;
  --outline: #8B91A0;
  --outline-variant: #414754;
  --font-sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", "Fira Code", Menlo, monospace;
}

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

html, body {
  min-height: 100vh;
  background: var(--surface-lowest);
  color: var(--on-surface);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  background:
    radial-gradient(900px 600px at 50% -10%, rgba(170, 199, 255, 0.06), transparent 70%),
    radial-gradient(800px 700px at 80% 110%, rgba(71, 226, 102, 0.03), transparent 60%),
    var(--surface-lowest);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 80px 32px 120px;
}

/* Top bar — brand mark */
header.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 80px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}
header.brand .dot {
  width: 10px;
  height: 10px;
  background: var(--primary);
  border-radius: 2px;
}

/* Hero */
.hero h1 {
  font-size: clamp(48px, 8vw, 72px);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.05;
  margin-bottom: 24px;
  color: var(--on-surface);
}
.hero h1 .accent { color: var(--primary); }
.hero .lede {
  font-size: clamp(18px, 2.4vw, 22px);
  color: var(--on-surface-variant);
  line-height: 1.5;
  max-width: 580px;
}

/* Product card */
.product {
  margin-top: 80px;
  padding: 32px;
  border: 1px solid var(--outline-variant);
  border-radius: 12px;
  background: rgba(28, 27, 27, 0.5);
}
.product .kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}
.product h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--on-surface);
}
.product p {
  color: var(--on-surface-variant);
  font-size: 16px;
  line-height: 1.55;
}
.product .meta {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--outline);
  letter-spacing: 0.5px;
}

/* Contact */
.contact {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--outline-variant);
  color: var(--on-surface-variant);
  font-size: 15px;
}
.contact a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid var(--outline-variant);
  padding-bottom: 1px;
  transition: border-color 0.15s;
}
.contact a:hover { border-bottom-color: var(--primary); }

/* Footer */
footer {
  margin-top: 60px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.5px;
  color: var(--outline);
  text-transform: uppercase;
}

/* Privacy-specific typography */
.doc-title {
  font-size: clamp(36px, 6vw, 52px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 16px;
}
.doc-date {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--outline);
  margin-bottom: 48px;
}
section.block {
  margin-top: 40px;
}
section.block h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--on-surface);
  margin-bottom: 12px;
}
section.block h3 .num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--primary);
  margin-right: 12px;
  letter-spacing: 2px;
}
section.block p,
section.block li {
  color: var(--on-surface-variant);
  font-size: 16px;
  line-height: 1.65;
}
section.block p + p { margin-top: 12px; }
section.block ul {
  margin-top: 10px;
  padding-left: 0;
  list-style: none;
}
section.block li {
  padding-left: 22px;
  position: relative;
  margin-bottom: 6px;
}
section.block li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--outline);
}
section.block code {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--primary);
  background: rgba(170, 199, 255, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
}

/* Back link on privacy page */
.back {
  display: inline-block;
  margin-top: 60px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--outline);
  text-decoration: none;
}
.back:hover { color: var(--primary); }

@media (max-width: 640px) {
  .container { padding: 48px 20px 80px; }
  header.brand { margin-bottom: 48px; }
  .product { padding: 24px; }
}