/* siltu-landing/public/assets/css/styles.css */
:root {
  --navy: #0E1626;
  --navy-2: #101827;
  --teal: #14B8A6;
  --teal-light: #34D399;
  --slate: #6b7280;
  --slate-light: #9ca3af;
  --border: #e5e7eb;
  --bg-alt: #F8FAFC;
  --gradient: linear-gradient(135deg, var(--teal), var(--teal-light));
  --max-width: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--navy-2);
  line-height: 1.5;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

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

.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--navy); color: #fff; }
.section-dark .eyebrow { color: var(--teal-light); }
.section-dark .subtitle { color: #9ca3af; }

.eyebrow {
  display: block;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: 12px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 10px;
}
.section-title {
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  margin: 0 0 16px;
  line-height: 1.2;
}
.subtitle {
  font-size: 16px;
  color: var(--slate);
  max-width: 640px;
  margin: 0 0 28px;
}

.btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--gradient); color: var(--navy-2); }
.btn-secondary { border: 1.5px solid var(--navy-2); color: var(--navy-2); background: transparent; }
.section-dark .btn-secondary, .hero .btn-secondary { border-color: rgba(255,255,255,.5); color: #fff; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* Nav */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(14, 22, 38, .92);
  backdrop-filter: blur(6px);
  color: #fff;
}
.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand-mark {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 16px;
}
.brand-mark .star { color: var(--teal-light); }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a.nav-link { font-size: 14px; color: #d1d5db; }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 22px; cursor: pointer; }

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; position: absolute; top: 64px; left: 0; right: 0; background: var(--navy); flex-direction: column; padding: 16px 24px; gap: 16px; }
  .nav-toggle { display: block; }
}

/* Hero */
.hero { background: var(--navy); color: #fff; padding: 56px 0 0; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
  align-items: center;
  padding-bottom: 56px;
}
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
}
.hero h1 { font-size: clamp(30px, 5vw, 46px); font-weight: 800; line-height: 1.12; margin: 0 0 14px; }
.hero .subtitle { color: #9ca3af; font-size: 17px; }
.hero-signature { font-size: 13px; color: var(--slate-light); margin-top: 18px; }

.hero-steps { margin: 24px 0; display: flex; flex-direction: column; gap: 16px; }
.hero-step { display: flex; gap: 14px; align-items: flex-start; }
.step-num {
  flex: 0 0 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient);
  color: var(--navy-2);
  font-weight: 800;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-step p { margin: 0; color: #e5e7eb; font-size: 14px; }
.hero-step b { color: #fff; }

.checkout-card {
  background: #fff;
  color: var(--navy-2);
  border-radius: 14px;
  box-shadow: 0 24px 50px rgba(0,0,0,.35);
  padding: 20px;
  max-width: 340px;
  margin: 0 auto;
  transform: rotate(-2deg);
}
.checkout-card h4 { margin: 0 0 10px; font-size: 14px; }
.checkout-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px dashed var(--border); font-size: 13px; }
.checkout-row.total { border: none; font-weight: 800; }
.checkout-card .btn-primary { width: 100%; text-align: center; margin-top: 12px; }

/* Flow diagram (hero + payments) */
.flow-diagram { background: var(--bg-alt); color: var(--navy-2); padding: 40px 0; }
.flow-title { text-align: center; font-weight: 800; font-size: 15px; margin-bottom: 28px; color: var(--navy-2); }
.flow-row {
  display: flex;
  align-items: flex-start;
  gap: 0;
  overflow-x: auto;
  padding-bottom: 8px;
}
.flow-node { flex: 1; min-width: 96px; text-align: center; font-size: 12px; }
.flow-node .icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: #fff;
  border: 2px solid var(--teal);
  color: var(--teal);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 8px;
}
.flow-node .icon svg { width: 20px; height: 20px; }
.flow-node.optional .icon { border-style: dashed; border-color: var(--slate-light); color: var(--slate-light); }
.flow-node.optional { color: var(--slate-light); }
.flow-line { flex: 0 0 32px; height: 2px; margin-top: 22px; background: repeating-linear-gradient(90deg, var(--teal) 0 6px, transparent 6px 11px); }

.feature-list { list-style: none; margin: 0 0 24px; padding: 0; display: grid; gap: 14px; }
.feature-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; }
.feature-list li::before { content: "✓"; color: var(--teal); font-weight: 800; flex-shrink: 0; }
.closing-line { font-weight: 700; font-size: 16px; }
.quote {
  border-left: 4px solid var(--teal);
  padding: 6px 0 6px 18px;
  font-size: 17px;
  font-weight: 700;
  font-style: normal;
  margin: 20px 0;
}
.arch-line {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
  color: var(--navy-2);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  display: inline-block;
  margin: 8px 0 24px;
}
.badge-progress {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--navy-2);
  background: #FEF3C7;
  border: 1px solid #FDE68A;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.site-footer { background: var(--navy-2); color: #9ca3af; padding: 32px 0; font-size: 13px; }
.site-footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }