/*
 * AgentProof — minimal monochromatic stylesheet
 * Sprint 3 scaffolding: clean, readable, no marketing gloss.
 * Design polish comes in a later sprint after legal pages are live.
 */

:root {
  --color-bg: #ffffff;
  --color-fg: #111111;
  --color-muted: #555555;
  --color-border: #dddddd;
  --color-accent: #1a1a1a;
  --color-warn-bg: #fff8e1;
  --color-warn-border: #f0c020;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --max-width: 760px;
  --space: 1.5rem;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-fg);
  background: var(--color-bg);
}

body {
  margin: 0;
  padding: 0;
}

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

a:hover {
  text-decoration: none;
}

/* ── Layout ─────────────────────────────────────────────────────────────── */

.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem var(--space);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-header__wordmark {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--color-fg);
  letter-spacing: -0.02em;
}

.site-header__nav {
  margin-left: auto;
  display: flex;
  gap: 1.25rem;
  font-size: 0.875rem;
}

.site-header__nav a {
  text-decoration: none;
  color: var(--color-muted);
}

.site-header__nav a:hover {
  color: var(--color-fg);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--space) * 2) var(--space);
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space);
  margin-top: calc(var(--space) * 3);
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ── FTC disclaimer footer ───────────────────────────────────────────────── */

.ftc-disclaimer {
  font-size: 0.75rem;
  color: var(--color-muted);
  line-height: 1.5;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

/* ── Draft banner ────────────────────────────────────────────────────────── */

.draft-banner {
  background: var(--color-warn-bg);
  border: 2px solid var(--color-warn-border);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  margin-bottom: 2rem;
  font-size: 0.9rem;
  font-weight: 600;
}

/* ── Typography helpers ──────────────────────────────────────────────────── */

h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
}

h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 2rem 0 0.5rem;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}

pre, code {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

/* ── CTA buttons ─────────────────────────────────────────────────────────── */

.btn {
  display: inline-block;
  padding: 0.625rem 1.25rem;
  border: 2px solid var(--color-fg);
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.btn--primary {
  background: var(--color-fg);
  color: var(--color-bg);
}

.btn--primary:hover {
  background: #333333;
  border-color: #333333;
}

.btn--outline {
  background: transparent;
  color: var(--color-fg);
}

.btn--outline:hover {
  background: var(--color-fg);
  color: var(--color-bg);
}

/* ── Waitlist form ───────────────────────────────────────────────────────── */

.waitlist-form {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin: 1.5rem 0;
}

.waitlist-form input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 0.625rem 0.875rem;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  font-size: 0.9rem;
  font-family: var(--font-sans);
}

.waitlist-form input[type="email"]:focus {
  outline: 2px solid var(--color-fg);
  border-color: var(--color-fg);
}

/* ── Legal prose ─────────────────────────────────────────────────────────── */

.legal-prose h2 {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.25rem;
}

.legal-prose blockquote {
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  border-left: 4px solid var(--color-warn-border);
  background: var(--color-warn-bg);
  font-size: 0.9rem;
}