/* BrainBuild Landing Page Styles */
:root {
  --bg: #FAF8F5;
  --fg: #1A1A1A;
  --fg-muted: #6B6B6B;
  --accent: #E8A030;
  --accent-dark: #C4880A;
  --primary: #0A4A4A;
  --primary-light: #0D6060;
  --surface: #FFFFFF;
  --border: #E8E4DE;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Source Sans 3', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 600;
  line-height: 1.2;
}

/* Nav */
.nav { padding: 24px 0; border-bottom: 1px solid var(--border); }
.nav-inner { max-width: 1100px; margin: 0 auto; padding: 0 40px; }
.nav-logo { font-family: 'Playfair Display', serif; font-size: 20px; font-weight: 700; color: var(--primary); }

/* Hero */
.hero { padding: 100px 0 120px; }
.hero-content { max-width: 1100px; margin: 0 auto; padding: 0 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-headline { font-size: clamp(36px, 4vw, 52px); color: var(--primary); margin-bottom: 24px; }
.hero-sub { font-size: 19px; color: var(--fg-muted); max-width: 460px; line-height: 1.7; }

.hero-visual {
  position: relative;
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbit-ring {
  position: absolute;
  border: 1.5px solid var(--border);
  border-radius: 50%;
}
.orbit-1 { width: 260px; height: 260px; animation: spin 20s linear infinite; }
.orbit-2 { width: 180px; height: 180px; border-color: var(--accent); opacity: 0.4; animation: spin 14s linear infinite reverse; }
.orbit-3 { width: 320px; height: 320px; border-style: dashed; opacity: 0.25; animation: spin 28s linear infinite; }

.orbit-core {
  width: 80px;
  height: 80px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 20px 60px rgba(10,74,74,0.25);
}
.orbit-core svg { width: 40px; height: 40px; }

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* How It Works */
.howitworks { padding: 100px 0; background: var(--surface); }
.howitworks-inner { max-width: 900px; margin: 0 auto; padding: 0 40px; }
.section-label { font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-bottom: 48px; }

.steps { display: flex; flex-direction: column; gap: 40px; }
.step { display: grid; grid-template-columns: 56px 1fr; gap: 28px; align-items: start; }
.step-number { width: 56px; height: 56px; background: var(--primary); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: 'Playfair Display', serif; font-size: 22px; font-weight: 700; }
.step-body h3 { font-size: 22px; color: var(--fg); margin-bottom: 10px; }
.step-body p { color: var(--fg-muted); font-size: 16px; line-height: 1.7; }

/* Features */
.features { padding: 100px 0; }
.features-inner { max-width: 1100px; margin: 0 auto; padding: 0 40px; }
.features-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px 80px; margin-top: 0; }
.feature { }
.feature-icon { width: 44px; height: 44px; margin-bottom: 16px; color: var(--accent); }
.feature-icon svg { width: 100%; height: 100%; }
.feature h3 { font-size: 20px; color: var(--fg); margin-bottom: 10px; }
.feature p { color: var(--fg-muted); font-size: 16px; line-height: 1.7; }

/* Manifesto */
.manifesto { padding: 100px 0; background: var(--primary); color: white; }
.manifesto-inner { max-width: 900px; margin: 0 auto; padding: 0 40px; }
.quote-mark { font-family: 'Playfair Display', serif; font-size: 120px; line-height: 0.5; color: var(--accent); opacity: 0.6; margin-bottom: 24px; }
.manifesto-quote blockquote { font-family: 'Playfair Display', serif; font-size: clamp(24px, 2.5vw, 30px); line-height: 1.5; font-style: italic; margin-bottom: 40px; }
.manifesto-body p { font-size: 17px; line-height: 1.8; opacity: 0.85; max-width: 640px; }
.manifesto-body p + p { margin-top: 20px; }

/* Closing */
.closing { padding: 100px 0; text-align: center; }
.closing-inner { max-width: 700px; margin: 0 auto; padding: 0 40px; }
.closing h2 { font-size: clamp(28px, 3vw, 38px); color: var(--primary); margin-bottom: 24px; }
.closing p { font-size: 18px; color: var(--fg-muted); line-height: 1.7; }

/* Footer */
.footer { padding: 48px 0; border-top: 1px solid var(--border); }
.footer-inner { max-width: 1100px; margin: 0 auto; padding: 0 40px; display: flex; justify-content: space-between; align-items: center; }
.footer-logo { font-family: 'Playfair Display', serif; font-size: 18px; font-weight: 700; color: var(--primary); }
.footer-tagline { font-size: 14px; color: var(--fg-muted); margin-top: 4px; }
.footer-note { font-size: 14px; color: var(--fg-muted); }

/* Mobile */
@media (max-width: 768px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { height: 260px; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
  .step { grid-template-columns: 1fr; }
  .step-number { width: 40px; height: 40px; font-size: 18px; }
}