/* Dokufast marketing + legal site — single stylesheet, no build step, no deps. */

:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-soft: #e6f4fe;
  --ink: #0f172a;
  --body: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --radius: 16px;
  --maxw: 1040px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, "Inter", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--blue-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
}

.brand:hover {
  text-decoration: none;
}

.brand img {
  width: 30px;
  height: 30px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.95rem;
}

.nav a {
  color: var(--body);
  font-weight: 500;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background: var(--blue-dark);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  background: var(--bg-alt);
}

/* ---------- Hero ---------- */

.hero {
  background: radial-gradient(
      900px 420px at 50% -10%,
      var(--blue-soft),
      transparent 70%
    ),
    var(--bg);
  padding: 88px 0 72px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 auto 20px;
  max-width: 18ch;
}

.hero p.lead {
  font-size: clamp(1.05rem, 2.3vw, 1.3rem);
  color: var(--muted);
  max-width: 56ch;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Sections ---------- */

section {
  padding: 72px 0;
}

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-title {
  text-align: center;
  font-size: clamp(1.6rem, 3.5vw, 2.1rem);
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.section-sub {
  text-align: center;
  color: var(--muted);
  max-width: 52ch;
  margin: 0 auto 48px;
}

/* ---------- Feature grid ---------- */

.features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}

.feature .icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  background: var(--blue-soft);
  color: var(--blue-dark);
  margin-bottom: 16px;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
  color: var(--ink);
}

.feature p {
  margin: 0;
  color: var(--body);
  font-size: 0.98rem;
}

/* ---------- Steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step {
  text-align: center;
  padding: 8px;
}

.step .num {
  counter-increment: step;
  width: 40px;
  height: 40px;
  margin: 0 auto 14px;
  border-radius: 999px;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step .num::before {
  content: counter(step);
}

.step h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  color: var(--ink);
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- CTA band ---------- */

.cta {
  text-align: center;
}

.cta h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  color: var(--ink);
  margin: 0 0 24px;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg);
  padding: 36px 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--body);
}

/* ---------- Legal / long-form pages ---------- */

.legal {
  padding: 56px 0 80px;
}

.legal .wrap {
  max-width: 760px;
}

.legal h1 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

.legal .updated {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 36px;
}

.legal h2 {
  font-size: 1.3rem;
  color: var(--ink);
  margin: 40px 0 12px;
}

.legal h3 {
  font-size: 1.05rem;
  color: var(--ink);
  margin: 24px 0 8px;
}

.legal p,
.legal li {
  color: var(--body);
}

.legal ul {
  padding-left: 22px;
}

.legal li {
  margin-bottom: 6px;
}

.legal .note {
  background: var(--blue-soft);
  border: 1px solid #cfe6fb;
  border-radius: 12px;
  padding: 14px 18px;
  font-size: 0.92rem;
  color: #1e3a5f;
}

.back-link {
  display: inline-block;
  margin-bottom: 28px;
  font-weight: 500;
}

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
  .features,
  .steps {
    grid-template-columns: 1fr;
  }

  .nav {
    gap: 18px;
  }

  .nav a:not(.btn) {
    display: none;
  }

  .hero {
    padding: 64px 0 52px;
  }

  section {
    padding: 56px 0;
  }
}