/* Note Flow — masquerade site styling
   Минималистичный дизайн в духе современных productivity-сервисов */

:root {
  --c-bg: #fbfbfd;
  --c-surface: #ffffff;
  --c-text: #1d1d1f;
  --c-text-muted: #6e6e73;
  --c-accent: #2c5cdc;
  --c-accent-hover: #1f47b3;
  --c-border: #e5e5e7;
  --c-soft: #f5f5f7;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 24px rgba(44,92,220,0.08);
  --max-w: 1180px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

/* ─── Nav ─────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--c-border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--c-text); }
.brand:hover { text-decoration: none; }
.brand-icon { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: var(--c-text-muted); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--c-text); text-decoration: none; }
.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600; font-size: 14px;
  background: var(--c-accent); color: white;
  border: 1px solid var(--c-accent);
  transition: all 0.15s ease;
  cursor: pointer;
}
.btn:hover { background: var(--c-accent-hover); border-color: var(--c-accent-hover); color: white; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--c-text); border-color: var(--c-border); }
.btn-ghost:hover { background: var(--c-soft); color: var(--c-text); border-color: var(--c-border); }
.btn-lg { padding: 14px 28px; font-size: 16px; }

/* ─── Hero ────────────────────────────────────────────────────────── */
.hero {
  padding: 96px 0 72px;
  text-align: center;
}
.hero h1 {
  font-size: 56px; line-height: 1.1; letter-spacing: -0.02em;
  margin: 0 0 20px;
  font-weight: 700;
}
.hero .lead {
  font-size: 20px; color: var(--c-text-muted);
  max-width: 640px; margin: 0 auto 36px;
}
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-art {
  margin: 64px auto 0;
  max-width: 920px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  background: var(--c-surface);
}

/* Mock editor превью внутри hero */
.mock {
  display: grid; grid-template-columns: 220px 1fr; min-height: 380px;
  font-size: 13px;
  text-align: left;
}
.mock-side { background: var(--c-soft); padding: 20px 16px; border-right: 1px solid var(--c-border); }
.mock-side .mock-item { padding: 6px 8px; border-radius: 6px; color: var(--c-text-muted); margin-bottom: 2px; }
.mock-side .mock-item.active { background: rgba(44,92,220,0.1); color: var(--c-accent); font-weight: 500; }
.mock-doc { padding: 28px 32px; }
.mock-doc h3 { margin: 0 0 4px; font-size: 22px; }
.mock-doc .mock-meta { color: var(--c-text-muted); font-size: 12px; margin-bottom: 20px; }
.mock-doc p { color: var(--c-text); margin: 0 0 12px; }
.mock-doc .mock-tag { display: inline-block; padding: 2px 8px; border-radius: 4px; background: var(--c-soft); color: var(--c-text-muted); font-size: 11px; margin-right: 6px; }
.mock-doc .mock-bl { color: var(--c-accent); }

/* ─── Sections ────────────────────────────────────────────────────── */
section { padding: 80px 0; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-head h2 { font-size: 36px; line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 12px; }
.section-head p { color: var(--c-text-muted); font-size: 18px; margin: 0 auto; max-width: 580px; }

/* ─── Features grid ──────────────────────────────────────────────── */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.feature {
  padding: 28px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.feature:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.feature-icon { width: 40px; height: 40px; margin-bottom: 16px; color: var(--c-accent); }
.feature h3 { margin: 0 0 8px; font-size: 18px; }
.feature p { color: var(--c-text-muted); margin: 0; font-size: 15px; }

/* ─── Stats ──────────────────────────────────────────────────────── */
.stats {
  background: var(--c-soft);
}
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px;
  text-align: center;
}
.stat-num { font-size: 44px; font-weight: 700; color: var(--c-accent); line-height: 1; }
.stat-label { color: var(--c-text-muted); font-size: 15px; margin-top: 8px; }

/* ─── Pricing ────────────────────────────────────────────────────── */
.pricing {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px;
  max-width: 980px; margin: 0 auto;
}
.plan {
  padding: 32px 28px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  display: flex; flex-direction: column;
}
.plan.featured { border-color: var(--c-accent); box-shadow: var(--shadow-md); position: relative; }
.plan.featured::before {
  content: 'Популярно'; position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--c-accent); color: white; padding: 4px 12px;
  border-radius: 999px; font-size: 12px; font-weight: 600;
}
.plan h3 { margin: 0 0 8px; font-size: 20px; }
.plan-price { font-size: 36px; font-weight: 700; margin: 16px 0 4px; }
.plan-price span { font-size: 16px; font-weight: 400; color: var(--c-text-muted); }
.plan-desc { color: var(--c-text-muted); font-size: 14px; margin: 0 0 24px; min-height: 40px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 28px; flex: 1; }
.plan ul li { padding: 6px 0; padding-left: 22px; position: relative; font-size: 14px; }
.plan ul li::before {
  content: ''; position: absolute; left: 0; top: 12px;
  width: 14px; height: 8px; border-left: 2px solid var(--c-accent); border-bottom: 2px solid var(--c-accent);
  transform: rotate(-45deg);
}

/* ─── CTA strip ──────────────────────────────────────────────────── */
.cta-strip {
  text-align: center; padding: 80px 24px;
  background: linear-gradient(135deg, #2c5cdc, #5b85ed);
  color: white; border-radius: var(--radius-lg);
  margin: 80px auto;
  max-width: var(--max-w);
}
.cta-strip h2 { font-size: 36px; margin: 0 0 12px; }
.cta-strip p { font-size: 18px; opacity: 0.9; margin: 0 0 28px; }
.cta-strip .btn { background: white; color: var(--c-accent); border-color: white; }
.cta-strip .btn:hover { background: var(--c-soft); border-color: var(--c-soft); color: var(--c-accent); }

/* ─── Article / content pages ────────────────────────────────────── */
.page {
  max-width: 760px; margin: 0 auto; padding: 64px 24px;
}
.page h1 { font-size: 44px; margin: 0 0 16px; letter-spacing: -0.01em; }
.page h2 { font-size: 24px; margin: 40px 0 12px; }
.page p, .page ul, .page ol { color: var(--c-text); }
.page ul, .page ol { padding-left: 22px; }
.page li { margin: 6px 0; }
.page .lead { font-size: 18px; color: var(--c-text-muted); margin-bottom: 32px; }

/* ─── Footer ─────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--c-border);
  padding: 48px 0 32px;
  color: var(--c-text-muted);
  font-size: 14px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px;
}
.footer-grid h4 { margin: 0 0 12px; font-size: 14px; color: var(--c-text); }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin: 6px 0; }
.footer-grid a { color: var(--c-text-muted); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }

/* ─── 404 ────────────────────────────────────────────────────────── */
.notfound { text-align: center; padding: 120px 24px; }
.notfound .big { font-size: 120px; font-weight: 700; color: var(--c-accent); line-height: 1; margin-bottom: 16px; }
.notfound h1 { font-size: 28px; margin: 0 0 12px; }
.notfound p { color: var(--c-text-muted); margin-bottom: 24px; }

/* ─── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero { padding: 64px 0 48px; }
  .hero h1 { font-size: 36px; }
  .hero .lead { font-size: 17px; }
  section { padding: 56px 0; }
  .section-head h2 { font-size: 28px; }
  .nav-links a:not(.btn) { display: none; }
  .mock { grid-template-columns: 1fr; }
  .mock-side { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .page { padding: 40px 24px; }
  .page h1 { font-size: 32px; }
}