/* Notyva — static site stylesheet. No external calls. System fonts only. */

:root {
  --bg: #0F1419;
  --bg-navy: #1B2838;
  --surface: #FFFFFF;
  --surface-soft: #F6F7FB;
  --text: #0F1419;
  --text-soft: #4A5563;
  --text-mute: #6B7280;
  --accent: #6C5CE7;
  --accent-2: #EC4899;
  --accent-green: #10B981;
  --accent-amber: #F59E0B;
  --accent-red: #EF4444;
  --border: #E5E7EB;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(15, 20, 25, 0.08);
  --max: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Ubuntu, Helvetica, Arial, sans-serif;
  --font-heading: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Ubuntu, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

/* ── Layout ──────────────────────────────────────────── */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ── Nav ─────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max); margin: 0 auto;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; letter-spacing: 0.02em; font-size: 18px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--text-soft); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* ── Hero ────────────────────────────────────────────── */
.hero {
  background:
    radial-gradient(1200px 500px at 10% -20%, rgba(108,92,231,0.22), transparent 60%),
    radial-gradient(1000px 400px at 100% 0%, rgba(236,72,153,0.18), transparent 60%),
    linear-gradient(180deg, #141C2A 0%, var(--bg-navy) 100%);
  color: #FFFFFF;
  padding: 88px 0 72px;
}
.hero-inner { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.hero-logo { width: 84px; height: 84px; border-radius: 20px; box-shadow: var(--shadow); margin-bottom: 24px; }
.hero h1 { font-family: var(--font-heading); font-size: clamp(36px, 5vw, 56px); line-height: 1.08; margin: 0 0 18px; font-weight: 800; letter-spacing: -0.02em; }
.hero .tag { color: #CFD6E4; max-width: 640px; font-size: 18px; margin: 0 0 32px; }
.hero .cta { display: inline-flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 12px; font-weight: 600; font-size: 15px; transition: transform .08s ease, box-shadow .2s ease; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #FFF; box-shadow: 0 8px 24px rgba(108,92,231,0.35); }
.btn-primary:hover { text-decoration: none; transform: translateY(-1px); box-shadow: 0 12px 28px rgba(108,92,231,0.45); }
.btn-ghost { color: #FFF; border: 1px solid rgba(255,255,255,0.22); background: rgba(255,255,255,0.04); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); text-decoration: none; }
.hero .meta { margin-top: 28px; color: #93A1B7; font-size: 13px; }

/* ── Sections ────────────────────────────────────────── */
section { padding: 72px 0; }
.section-title { font-family: var(--font-heading); font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; letter-spacing: -0.01em; margin: 0 0 12px; }
.section-sub { color: var(--text-soft); max-width: 640px; margin: 0 0 36px; font-size: 16px; }
.alt { background: var(--surface-soft); }

/* ── Features grid ───────────────────────────────────── */
.features {
  display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform .15s ease, box-shadow .25s ease, border-color .2s ease;
}
.feature:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: #D1D5DB; }
.feature .icon { width: 44px; height: 44px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 14px; }
.icon-notes { background: rgba(108,92,231,0.14); color: var(--accent); }
.icon-todos { background: rgba(16,185,129,0.14); color: var(--accent-green); }
.icon-reminders { background: rgba(245,158,11,0.14); color: var(--accent-amber); }
.icon-alarms { background: rgba(239,68,68,0.14); color: var(--accent-red); }
.icon-vini { background: linear-gradient(135deg, rgba(108,92,231,0.18), rgba(236,72,153,0.18)); color: var(--accent); }
.icon-listen { background: rgba(6,182,212,0.14); color: #06B6D4; }
.icon-habits { background: rgba(251,113,133,0.14); color: #FB7185; }
.icon-privacy { background: rgba(16,185,129,0.14); color: var(--accent-green); }
.feature h3 { margin: 0 0 6px; font-size: 17px; font-weight: 700; }
.feature p { margin: 0; color: var(--text-soft); font-size: 14.5px; }

/* ── Promise ─────────────────────────────────────────── */
.promise {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #FFF;
  border-radius: 20px;
  padding: 48px;
  text-align: center;
}
.promise h2 { margin: 0 0 10px; font-size: clamp(24px, 3vw, 32px); font-weight: 800; }
.promise p { margin: 0 auto; max-width: 620px; color: rgba(255,255,255,0.9); }

/* ── Footer ──────────────────────────────────────────── */
.footer {
  background: var(--bg-navy);
  color: #B8C0CF;
  padding: 48px 0 36px;
  font-size: 14px;
}
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 0 24px; display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: flex-start; }
.footer a { color: #CFD6E4; }
.footer a:hover { color: #FFF; text-decoration: none; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: #FFF; font-weight: 700; }
.footer-brand img { width: 28px; height: 28px; border-radius: 7px; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-copy { margin-top: 24px; color: #7D8BA3; font-size: 13px; text-align: center; }

/* ── Legal / long-form pages ─────────────────────────── */
.doc {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 80px;
}
.doc h1 { font-family: var(--font-heading); font-size: clamp(28px, 3.5vw, 38px); font-weight: 800; margin: 0 0 8px; letter-spacing: -0.01em; }
.doc .doc-meta { color: var(--text-mute); font-size: 14px; margin: 0 0 36px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.doc h2 { font-family: var(--font-heading); font-size: 22px; margin: 40px 0 10px; font-weight: 700; }
.doc h3 { font-size: 17px; margin: 24px 0 6px; font-weight: 700; }
.doc p, .doc li { color: #1F2937; font-size: 16px; }
.doc ul, .doc ol { padding-left: 22px; }
.doc li { margin: 6px 0; }
.doc code { background: var(--surface-soft); padding: 2px 6px; border-radius: 6px; font-size: 14px; }
.doc hr { border: 0; border-top: 1px solid var(--border); margin: 36px 0; }
.doc .toc { background: var(--surface-soft); border-radius: var(--radius-sm); padding: 16px 20px; margin: 24px 0 32px; font-size: 14.5px; }
.doc .toc strong { display: block; margin-bottom: 6px; color: var(--text-soft); font-weight: 600; }
.doc .toc a { color: var(--text-soft); }
.doc .toc a:hover { color: var(--accent); }

/* ── Support ─────────────────────────────────────────── */
.support-card {
  background: var(--surface-soft);
  border-radius: var(--radius);
  padding: 28px;
  display: flex; align-items: center; gap: 20px;
  margin: 24px 0;
}
.support-card .icon { width: 48px; height: 48px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0; }

/* ── 404 ─────────────────────────────────────────────── */
.notfound {
  min-height: 70vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 48px 24px;
}
.notfound h1 { font-size: 72px; margin: 0 0 8px; font-family: var(--font-heading); font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.notfound p { color: var(--text-soft); font-size: 17px; margin: 0 0 24px; }

/* ── Dark mode (respects OS preference) ──────────────── */
@media (prefers-color-scheme: dark) {
  :root {
    --surface: #0F1419;
    --surface-soft: #141C2A;
    --text: #E6ECF4;
    --text-soft: #AAB4C5;
    --text-mute: #7D8BA3;
    --border: #223044;
  }
  body { background: var(--surface); color: var(--text); }
  .nav { background: rgba(15,20,25,0.85); }
  .brand { color: var(--text); }
  .nav-links a { color: var(--text-soft); }
  .nav-links a:hover { color: var(--text); }
  .feature { background: #141C2A; border-color: #223044; }
  .feature:hover { border-color: #2D3A52; }
  .feature p { color: var(--text-soft); }
  .doc p, .doc li { color: #D0D7E2; }
  .doc code { background: #141C2A; }
  .support-card { background: #141C2A; }
}

/* ── Mobile ──────────────────────────────────────────── */
@media (max-width: 640px) {
  section { padding: 56px 0; }
  .hero { padding: 64px 0 56px; }
  .nav-inner { padding: 12px 16px; }
  .brand { font-size: 16px; }
  .brand img { width: 28px; height: 28px; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 13px; }
  .nav-links a[href^="/#features"] { display: none; }
  .promise { padding: 32px 24px; }
  .doc { padding: 40px 20px 64px; }
  .footer-inner { flex-direction: column; align-items: center; text-align: center; gap: 16px; }
  .support-card { flex-direction: column; align-items: flex-start; text-align: left; }
  .cta { flex-direction: column; align-items: stretch; }
  .cta .btn { justify-content: center; }
}