/* privateassistant.ai marketing site. Brand colours from infrastructure/branding/logos. */

:root {
  --indigo: #4F46E5;
  --indigo-soft: #A5B4FC;
  --slate: #0F172A;

  --bg: #FFFFFF;
  --bg-alt: #F8FAFC;
  --surface: #FFFFFF;
  --text: #0F172A;
  --muted: #475569;
  --border: #E2E8F0;
  --accent: var(--indigo);
  --accent-text: #FFFFFF;
  --accent-tint: #EEF2FF;
  --shadow: 0 1px 2px rgb(15 23 42 / 0.06), 0 8px 24px rgb(15 23 42 / 0.06);

  --radius: 14px;
  --max: 1120px;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0F172A;
    --bg-alt: #111C33;
    --surface: #16213A;
    --text: #F8FAFC;
    --muted: #94A3B8;
    --border: #243049;
    --accent: var(--indigo-soft);
    --accent-text: #0F172A;
    --accent-tint: #1E2750;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 8px 24px rgb(0 0 0 / 0.25);
  }
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5em; letter-spacing: -0.015em; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); font-weight: 750; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.25rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 650; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }

.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--accent); color: var(--accent-text); padding: 8px 14px; border-radius: 8px; z-index: 10;
}
.skip:focus { left: 8px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

/* ── header ─────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-size: 1.05rem; letter-spacing: -0.01em; }
.brand img { width: 36px; height: 36px; }
.nav-actions a { white-space: nowrap; }
.brand b { font-weight: 700; }
.nav-links { display: flex; gap: 24px; list-style: none; margin: 0 auto 0 12px; padding: 0; }
.nav-links a, .link-quiet { color: var(--muted); text-decoration: none; font-weight: 500; }
.nav-links a:hover, .link-quiet:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 16px; margin-left: auto; }

/* ── buttons ────────────────────────────────────────── */
.btn {
  display: inline-block; padding: 13px 22px; border-radius: 10px;
  font-weight: 600; text-decoration: none; line-height: 1.2;
  border: 1px solid transparent; transition: transform .12s ease, background .12s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: 9px 16px; font-size: 0.95rem; }
.btn-primary { background: var(--accent); color: var(--accent-text); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 88%, var(--text)); }
.btn-ghost { color: var(--text); border-color: var(--border); background: var(--surface); }
.btn-light { background: #FFFFFF; color: var(--indigo); }

/* ── hero ───────────────────────────────────────────── */
.hero {
  padding: 88px 0 96px;
  background:
    radial-gradient(800px 400px at 85% 10%, color-mix(in srgb, var(--indigo-soft) 30%, transparent), transparent 70%),
    var(--bg);
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-block; margin-bottom: 18px; padding: 4px 12px; border-radius: 999px;
  background: var(--accent-tint); color: var(--accent); font-weight: 600; font-size: 0.85rem;
}
.lede { font-size: 1.15rem; color: var(--muted); max-width: 36em; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.hero-card { display: grid; gap: 14px; }
.mail {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow); font-size: 0.97rem;
}
.mail p { margin: 10px 0 0; }
.mail-reply { margin-left: 32px; border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.mail-head { display: flex; gap: 12px; align-items: center; }
.mail-head strong { display: block; font-size: 0.92rem; }
.mail-head span { color: var(--muted); font-size: 0.85rem; }
.dot { width: 34px; height: 34px; border-radius: 50%; background: var(--border); flex: none; }
.dot-accent { background: var(--accent); }

/* ── sections ───────────────────────────────────────── */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section-lede { color: var(--muted); font-size: 1.1rem; max-width: 40em; margin-bottom: 40px; }

.cards {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.card p { color: var(--muted); margin: 0; }

.steps {
  list-style: none; margin: 32px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.steps p { color: var(--muted); }
.step-num {
  display: grid; place-items: center; width: 40px; height: 40px; margin-bottom: 16px;
  border-radius: 12px; background: var(--accent); color: var(--accent-text); font-weight: 700;
}

.privacy { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.checks li { position: relative; padding-left: 34px; color: var(--muted); }
.checks li strong { color: var(--text); }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent-tint)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234F46E5' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12l4 4 8-8'/%3E%3C/svg%3E")
    center / 14px no-repeat;
}

/* FAQ */
details {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 0 22px; margin-bottom: 12px;
}
summary {
  cursor: pointer; list-style: none; padding: 18px 28px 18px 0; font-weight: 600; position: relative;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  font-size: 1.4rem; font-weight: 400; color: var(--muted);
}
details[open] summary::after { content: "\2212"; }
details p { color: var(--muted); padding-bottom: 6px; }

/* CTA band */
.cta-band { background: var(--indigo); color: #FFFFFF; padding: 72px 0; }
.cta-band-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h2 { margin: 0; max-width: 20em; }

/* footer */
.site-footer { padding: 36px 0; border-top: 1px solid var(--border); }
.footer-grid { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 22px; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--text); }
.copy { margin: 0 0 0 auto; color: var(--muted); font-size: 0.9rem; }

/* 404 */
.notfound { min-height: 70vh; display: grid; place-items: center; text-align: center; padding: 64px 20px; }
.notfound img { margin: 0 auto 24px; }

/* ── responsive ─────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-grid, .privacy { grid-template-columns: 1fr; gap: 40px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; gap: 20px; }
  .nav-links { display: none; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .hero { padding: 56px 0 64px; }
  .section { padding: 64px 0; }
  .cards { grid-template-columns: 1fr; }
  .nav { gap: 12px; }
  .nav-actions { gap: 12px; }
  .mail-reply { margin-left: 16px; }
  .brand { font-size: 0.95rem; }
  .copy { margin-left: 0; }
}
.cta-center { justify-content: center; }
@media (max-width: 400px) { .brand span { display: none; } }

/* ── legal pages (privacy, terms) ───────────────────── */
.legal { padding: 64px 0 88px; }
.legal h1 { margin-bottom: 0.2em; }
.legal .updated { color: var(--muted); font-size: 0.95rem; margin-bottom: 2em; }
.legal h2 { font-size: 1.3rem; margin-top: 2.2em; scroll-margin-top: 88px; }
.legal p, .legal li { color: var(--text); }
.legal ul { padding-left: 1.3em; margin: 0 0 1em; }
.legal li { margin-bottom: 0.5em; }
.table-wrap { overflow-x: auto; margin: 0 0 1.2em; border: 1px solid var(--border); border-radius: 12px; }
.legal table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.legal th, .legal td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
.legal th { background: var(--bg-alt); font-weight: 600; }
.legal tr:last-child td { border-bottom: 0; }