/* OfficeChoir / DocPulse — Document Intelligence */

:root {
  --dp-dark: #0f172a;
  --dp-darker: #1e293b;
  --dp-blue: #3b82f6;
  --dp-blue-light: #60a5fa;
  --dp-cyan: #06b6d4;
  --dp-green: #10b981;
  --dp-purple: #8b5cf6;
  --dp-white: #f8fafc;
  --dp-text: #1e293b;
  --dp-text-light: #64748b;
  --dp-bg: #ffffff;
  --dp-bg-alt: #f1f5f9;
  --font-heading: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-body); color: var(--dp-text); background: var(--dp-bg); line-height: 1.7; }
a { color: var(--dp-blue); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--dp-blue-light); }
img { max-width: 100%; height: auto; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* NAV */
.nav {
  background: var(--dp-dark);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.nav .container { display: flex; align-items: center; justify-content: space-between; }
.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.nav-logo .doc { color: var(--dp-cyan); }
.nav-logo .pulse { color: var(--dp-white); }
.nav-logo .by { color: var(--dp-text-light); font-size: 0.75rem; font-weight: 400; margin-left: 8px; }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a {
  color: var(--dp-white);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--dp-cyan); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--dp-white); margin: 5px 0; }

/* HERO */
.hero {
  background: linear-gradient(135deg, var(--dp-dark) 0%, #0c1929 50%, var(--dp-darker) 100%);
  color: var(--dp-white);
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(6,182,212,0.08) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(59,130,246,0.06) 0%, transparent 50%);
  animation: pulse-bg 8s ease-in-out infinite alternate;
}
@keyframes pulse-bg {
  from { opacity: 0.5; }
  to { opacity: 1; }
}
.hero .container { position: relative; z-index: 1; }
.hero-badge {
  display: inline-block;
  background: rgba(6,182,212,0.15);
  color: var(--dp-cyan);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(6,182,212,0.3);
}
.hero h1 {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  margin-bottom: 16px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -1px;
}
.hero h1 .accent { color: var(--dp-cyan); }
.hero h1 .accent2 { color: var(--dp-blue-light); }
.hero p {
  font-size: 1.2rem;
  color: #94a3b8;
  max-width: 620px;
  margin: 0 auto 36px;
}
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* BUTTONS */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  border: 2px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--dp-blue) 0%, var(--dp-cyan) 100%);
  color: white;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59,130,246,0.3);
  color: white;
}
.btn-secondary {
  background: transparent;
  color: var(--dp-white);
  border-color: rgba(255,255,255,0.2);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--dp-cyan);
  color: var(--dp-cyan);
}
.btn-dark {
  background: var(--dp-dark);
  color: var(--dp-cyan);
  border-color: var(--dp-cyan);
}
.btn-dark:hover {
  background: var(--dp-cyan);
  color: var(--dp-dark);
}

/* SECTIONS */
.section { padding: 80px 0; }
.section-alt { background: var(--dp-bg-alt); }
.section-dark { background: var(--dp-dark); color: var(--dp-white); }
.section h2 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  text-align: center;
  margin-bottom: 12px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.section-dark h2 { color: var(--dp-white); }
.section .section-sub {
  text-align: center;
  color: var(--dp-text-light);
  max-width: 600px;
  margin: 0 auto 48px;
}
.section-dark .section-sub { color: #94a3b8; }

/* FEATURE GRID */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--dp-bg);
  border-radius: 12px;
  padding: 32px;
  border: 1px solid #e2e8f0;
  transition: all 0.3s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
  border-color: var(--dp-cyan);
}
.section-dark .feature-card {
  background: rgba(255,255,255,0.03);
  border-color: rgba(255,255,255,0.1);
}
.section-dark .feature-card:hover { border-color: var(--dp-cyan); }
.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: inline-block;
  background: linear-gradient(135deg, var(--dp-blue), var(--dp-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.feature-card h3 { font-size: 1.15rem; margin-bottom: 8px; font-weight: 700; }
.feature-card p { font-size: 0.9rem; color: var(--dp-text-light); }
.section-dark .feature-card p { color: #94a3b8; }

/* PIPELINE */
.pipeline {
  display: flex;
  gap: 0;
  align-items: stretch;
  margin: 48px 0;
  flex-wrap: wrap;
  justify-content: center;
}
.pipeline-step {
  flex: 1;
  min-width: 200px;
  padding: 32px 24px;
  text-align: center;
  position: relative;
  background: var(--dp-bg);
  border: 1px solid #e2e8f0;
}
.pipeline-step:first-child { border-radius: 12px 0 0 12px; }
.pipeline-step:last-child { border-radius: 0 12px 12px 0; }
.pipeline-step .num {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--dp-blue), var(--dp-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.pipeline-step h4 { font-size: 1rem; margin: 8px 0 4px; font-weight: 700; }
.pipeline-step p { font-size: 0.85rem; color: var(--dp-text-light); }
.pipeline-step::after {
  content: '→';
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--dp-cyan);
  z-index: 1;
}
.pipeline-step:last-child::after { display: none; }

/* CODE BLOCK */
.code-demo {
  background: #0d1117;
  border-radius: 12px;
  padding: 32px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #c9d1d9;
  overflow-x: auto;
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto;
  border: 1px solid #30363d;
}
.code-demo .comment { color: #8b949e; }
.code-demo .keyword { color: var(--dp-purple); }
.code-demo .string { color: var(--dp-green); }
.code-demo .fn { color: var(--dp-blue-light); }

/* CTA */
.cta-card {
  background: linear-gradient(135deg, var(--dp-dark), #0c1929);
  border-radius: 16px;
  padding: 60px 48px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid rgba(6,182,212,0.2);
}
.cta-card h2 { color: var(--dp-white); margin-bottom: 16px; }
.cta-card p { color: #94a3b8; margin-bottom: 28px; max-width: 550px; margin-left: auto; margin-right: auto; }

/* PRICING */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.pricing-card {
  background: var(--dp-bg);
  border-radius: 12px;
  padding: 36px 28px;
  border: 2px solid #e2e8f0;
  text-align: center;
  transition: all 0.3s;
}
.pricing-card.featured {
  border-color: var(--dp-cyan);
  position: relative;
  box-shadow: 0 8px 32px rgba(6,182,212,0.15);
}
.pricing-card.featured::before {
  content: 'MOST POPULAR';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--dp-blue), var(--dp-cyan));
  color: white;
  padding: 4px 16px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
}
.pricing-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.pricing-price { font-size: 2.5rem; font-weight: 800; margin: 16px 0; }
.pricing-price span { font-size: 1rem; font-weight: 400; color: var(--dp-text-light); }
.pricing-features { list-style: none; text-align: left; margin: 24px 0; }
.pricing-features li { padding: 8px 0; font-size: 0.9rem; color: var(--dp-text-light); border-bottom: 1px solid #f1f5f9; }
.pricing-features li::before { content: '✓ '; color: var(--dp-green); font-weight: bold; }

/* FOOTER */
.footer {
  background: var(--dp-dark);
  color: #64748b;
  padding: 40px 0;
  text-align: center;
  font-size: 0.85rem;
}
.footer a { color: var(--dp-cyan); }
.footer-links { display: flex; gap: 24px; justify-content: center; margin-bottom: 16px; list-style: none; }
.footer-brand {
  font-size: 1.1rem;
  margin-bottom: 16px;
}
.footer-brand .doc { color: var(--dp-cyan); font-weight: 700; }
.footer-brand .pulse { color: var(--dp-white); font-weight: 700; }
.footer-suite { color: #475569; font-size: 0.8rem; margin-top: 12px; }
.footer-suite a { color: #64748b; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .hero { padding: 60px 0 48px; }
  .features-grid { grid-template-columns: 1fr; }
  .pipeline { flex-direction: column; }
  .pipeline-step { border-radius: 0 !important; }
  .pipeline-step:first-child { border-radius: 12px 12px 0 0 !important; }
  .pipeline-step:last-child { border-radius: 0 0 12px 12px !important; }
  .pipeline-step::after { content: '↓'; right: auto; left: 50%; bottom: -14px; top: auto; transform: translateX(-50%); }
  .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--dp-dark); padding: 20px; gap: 16px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .pricing-grid { grid-template-columns: 1fr; }
  .cta-card { padding: 40px 24px; }
  .section h2 { font-size: 1.8rem; }
}