/* ─────────────────────────────────────────
   StackFlow — B2B Outreach Agency Theme
   Palette: Charcoal #1A1A2E | Off-white #FAFAF8 | Amber #F5A623
   Fonts: Space Grotesk (headings) + DM Sans (body)
───────────────────────────────────────── */

:root {
  --bg: #FAFAF8;
  --bg-alt: #F2F1EE;
  --surface: #FFFFFF;
  --fg: #1A1A2E;
  --fg-muted: #6B6B7B;
  --accent: #F5A623;
  --accent-dim: rgba(245, 166, 35, 0.12);
  --border: #E5E4DF;
  --radius: 6px;
  --max-w: 1120px;
  --section-py: 96px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 { font-family: 'Space Grotesk', system-ui, sans-serif; line-height: 1.15; }
h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 600; }
h3 { font-size: 1.15rem; font-weight: 600; }

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

/* ─── Header ─── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250, 250, 248, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
  height: 60px; display: flex; align-items: center; justify-content: space-between;
}
.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem; font-weight: 700; letter-spacing: -0.03em;
  color: var(--fg); text-decoration: none;
}
.logo-accent { color: var(--accent); }
.header-nav { display: flex; gap: 32px; }
.header-nav a {
  color: var(--fg-muted); text-decoration: none; font-size: 0.9rem;
  font-weight: 500; transition: color 0.15s;
}
.header-nav a:hover { color: var(--fg); }

/* ─── Hero ─── */
.hero { padding: 80px 0 64px; }
.hero-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center;
}
.hero-tag {
  display: inline-block; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 20px;
}
.hero-headline { margin-bottom: 20px; }
.hero-sub {
  font-size: 1.1rem; color: var(--fg-muted); max-width: 460px; margin-bottom: 36px;
  line-height: 1.65;
}
.hero-cta-note { font-size: 0.9rem; color: var(--fg-muted); font-style: italic; }

/* Node network visualization */
.hero-visual { display: flex; align-items: center; justify-content: center; }
.node-network {
  display: flex; flex-direction: column; gap: 24px;
  padding: 32px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 4px 24px rgba(26,26,46,0.06);
  min-width: 280px;
}
.node-root {
  display: flex; align-items: center; gap: 10px;
  font-family: 'Space Grotesk', sans-serif; font-size: 0.85rem; font-weight: 600;
}
.node-branch { display: flex; flex-direction: column; gap: 12px; padding-left: 20px; border-left: 2px solid var(--accent-dim); margin-left: 7px; }
.node { display: flex; align-items: center; gap: 8px; font-size: 0.78rem; color: var(--fg-muted); }
.node-branch-2 { padding-left: 40px; }
.node-branch-3 { padding-left: 60px; }
.node-hot, .node-deal { color: var(--accent); font-weight: 600; }

/* Hero stats bar */
.hero-stats {
  max-width: var(--max-w); margin: 64px auto 0; padding: 32px 40px;
  background: var(--fg); color: #fff; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; gap: 0;
}
.stat { display: flex; flex-direction: column; align-items: center; padding: 0 48px; }
.stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem; font-weight: 700; color: var(--accent);
  line-height: 1;
}
.stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.6); margin-top: 6px; text-align: center; max-width: 140px; }
.stat-divider { width: 1px; height: 48px; background: rgba(255,255,255,0.15); }

/* ─── Services ─── */
.services { background: var(--bg); padding: var(--section-py) 0; }
.section-label {
  display: inline-block; font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 16px;
}
.section-headline { max-width: 540px; margin-bottom: 56px; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 36px 32px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.service-card:hover {
  box-shadow: 0 8px 32px rgba(26,26,46,0.08);
  transform: translateY(-2px);
}
.service-icon { margin-bottom: 20px; }
.service-title { font-family: 'Space Grotesk', sans-serif; font-size: 1rem; font-weight: 600; margin-bottom: 12px; }
.service-desc { font-size: 0.9rem; color: var(--fg-muted); line-height: 1.65; margin-bottom: 24px; }
.service-tag {
  display: inline-block; font-size: 0.8rem; font-weight: 600;
  color: var(--accent); font-family: 'Space Grotesk', sans-serif;
  background: var(--accent-dim); padding: 4px 10px; border-radius: 4px;
}

/* ─── Process ─── */
.process { background: var(--bg-alt); padding: var(--section-py) 0; }
.process-intro { max-width: 580px; font-size: 1.05rem; color: var(--fg-muted); margin-bottom: 64px; }
.process-steps { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: start; gap: 0; }
.step { padding: 0 8px; }
.step-num {
  font-family: 'Space Grotesk', sans-serif; font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.08em; color: var(--accent); margin-bottom: 12px;
}
.step-title { font-family: 'Space Grotesk', sans-serif; font-size: 0.95rem; font-weight: 600; margin-bottom: 10px; }
.step-desc { font-size: 0.85rem; color: var(--fg-muted); line-height: 1.65; }
.step-connector { display: flex; align-items: center; padding-top: 20px; }
.process-cta {
  margin-top: 56px; text-align: center;
  font-family: 'Space Grotesk', sans-serif; font-size: 1rem; font-weight: 600;
  color: var(--fg); background: var(--accent-dim); border: 1px solid rgba(245,166,35,0.25);
  display: inline-block; padding: 14px 28px; border-radius: 6px;
}

/* ─── Pricing ─── */
.pricing { padding: var(--section-py) 0; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pricing-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 36px 32px; position: relative;
}
.pricing-card-featured {
  background: var(--fg); color: #fff; border-color: var(--fg);
}
.pricing-card-featured .service-desc { color: rgba(255,255,255,0.65); }
.pricing-card-featured .service-tag { background: var(--accent); color: var(--fg); }
.pricing-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: var(--fg);
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
  padding: 4px 14px; border-radius: 20px; font-family: 'Space Grotesk', sans-serif;
}
.pricing-header { margin-bottom: 24px; }
.pricing-name {
  display: block; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 12px;
  font-family: 'Space Grotesk', sans-serif;
}
.pricing-card-featured .pricing-name { color: var(--accent); }
.pricing-amount { display: flex; align-items: baseline; gap: 8px; }
.price {
  font-family: 'Space Grotesk', sans-serif; font-size: 2.2rem; font-weight: 700;
}
.price-note { font-size: 0.85rem; color: var(--fg-muted); }
.pricing-card-featured .price-note { color: rgba(255,255,255,0.55); }
.pricing-features { list-style: none; margin-bottom: 28px; }
.pricing-features li {
  font-size: 0.85rem; padding: 8px 0; border-bottom: 1px solid var(--border);
  color: var(--fg-muted);
}
.pricing-card-featured .pricing-features li { border-color: rgba(255,255,255,0.1); color: rgba(255,255,255,0.7); }
.pricing-features li:last-child { border-bottom: none; }
.pricing-math {
  font-size: 0.8rem; color: var(--fg-muted); padding-top: 16px;
  border-top: 1px solid var(--border);
}
.pricing-card-featured .pricing-math { border-color: rgba(255,255,255,0.1); color: rgba(255,255,255,0.55); }
.pricing-math strong { color: var(--accent); }

/* ─── Manifesto ─── */
.manifesto { background: var(--fg); color: #fff; padding: 96px 0; }
.manifesto-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.manifesto-quote {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.2rem, 2.5vw, 1.6rem); font-weight: 500;
  line-height: 1.45; margin-bottom: 28px;
  color: var(--accent);
  quotes: "\201C" "\201D";
}
.manifesto-quote::before { content: open-quote; }
.manifesto-quote::after { content: close-quote; }
.manifesto-body { font-size: 0.95rem; color: rgba(255,255,255,0.65); line-height: 1.75; margin-bottom: 16px; }
.manifesto-stat-block { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.m-stat { padding: 24px; background: rgba(255,255,255,0.06); border-radius: 8px; }
.m-num {
  display: block; font-family: 'Space Grotesk', sans-serif;
  font-size: 1.8rem; font-weight: 700; color: var(--accent); line-height: 1;
}
.m-label { display: block; font-size: 0.78rem; color: rgba(255,255,255,0.55); margin-top: 8px; line-height: 1.4; }

/* ─── Footer ─── */
.site-footer { padding: 48px 0 32px; border-top: 1px solid var(--border); }
.footer-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; display: flex; justify-content: space-between; align-items: flex-start; }
.footer-tagline { font-size: 0.85rem; color: var(--fg-muted); margin-top: 8px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 0.85rem; color: var(--fg-muted); text-decoration: none; transition: color 0.15s; }
.footer-links a:hover { color: var(--fg); }
.footer-bottom { max-width: var(--max-w); margin: 40px auto 0; padding: 24px 24px 0; border-top: 1px solid var(--border); font-size: 0.78rem; color: var(--fg-muted); }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .hero-stats { flex-direction: column; gap: 24px; padding: 28px 32px; }
  .stat { padding: 0; border: none; }
  .stat-divider { display: none; }
  .services-grid { grid-template-columns: 1fr; gap: 16px; }
  .process-steps { grid-template-columns: 1fr; gap: 32px; }
  .step-connector { display: none; }
  .pricing-grid { grid-template-columns: 1fr; }
  .manifesto-inner { grid-template-columns: 1fr; gap: 48px; }
  .manifesto-stat-block { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; gap: 32px; }
}
@media (max-width: 600px) {
  h1 { font-size: 2rem; }
  .hero { padding: 56px 0 48px; }
  .manifesto-stat-block { grid-template-columns: 1fr; }
  .header-nav { display: none; }
}