/* OA Quantum Labs - Sales Site Styles */
:root {
  --primary: #0a1628;
  --accent: #00d4ff;
  --accent-dark: #0099cc;
  --secondary: #1a2d4a;
  --text: #e0e6ed;
  --text-muted: #8899aa;
  --white: #ffffff;
  --success: #00cc88;
  --warning: #ffaa00;
  --danger: #ff4466;
  --gradient: linear-gradient(135deg, #00d4ff 0%, #0066ff 50%, #6600ff 100%);
  --card-bg: rgba(26, 45, 74, 0.6);
  --border: rgba(0, 212, 255, 0.15);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--primary);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); margin-bottom: 1rem; }
h3 { font-size: 1.3rem; }
p { margin-bottom: 1rem; color: var(--text-muted); }
a { color: var(--accent); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--white); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* Navigation */
nav {
  position: fixed; top: 0; width: 100%; z-index: 1000;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}
nav .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.4rem; font-weight: 800; color: var(--white); }
.logo span { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a { color: var(--text-muted); font-size: 0.9rem; font-weight: 500; }
.nav-links a:hover { color: var(--white); }
.nav-cta {
  background: var(--gradient); color: var(--white) !important;
  padding: 0.6rem 1.5rem; border-radius: 6px; font-weight: 600;
}
.hamburger { display: none; background: none; border: none; color: var(--white); font-size: 1.5rem; cursor: pointer; }

/* Hero */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 8rem 0 4rem;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; right: -30%;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(0,212,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-content { max-width: 700px; position: relative; z-index: 1; }
.hero-badge {
  display: inline-block; padding: 0.4rem 1rem;
  background: rgba(0,212,255,0.1); border: 1px solid var(--border);
  border-radius: 50px; font-size: 0.85rem; color: var(--accent);
  margin-bottom: 1.5rem;
}
.hero h1 { color: var(--white); margin-bottom: 1.5rem; }
.hero h1 .highlight { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 1.2rem; margin-bottom: 2rem; }
.hero-stats { display: flex; gap: 3rem; margin-top: 3rem; }
.stat-item .stat-number { font-size: 2rem; font-weight: 800; color: var(--accent); }
.stat-item .stat-label { font-size: 0.85rem; color: var(--text-muted); }

/* Buttons */
.btn {
  display: inline-block; padding: 0.9rem 2rem;
  border-radius: 8px; font-weight: 600; font-size: 1rem;
  cursor: pointer; transition: all 0.3s; border: none; text-align: center;
}
.btn-primary { background: var(--gradient); color: var(--white); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,212,255,0.3); color: var(--white); }
.btn-secondary { background: transparent; border: 1px solid var(--accent); color: var(--accent); }
.btn-secondary:hover { background: rgba(0,212,255,0.1); color: var(--white); }
.btn-group { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-large { padding: 1.1rem 2.5rem; font-size: 1.1rem; }

/* Sections */
section { padding: 5rem 0; }
.section-header { text-align: center; max-width: 600px; margin: 0 auto 3rem; }
.section-header h2 { color: var(--white); }

/* Cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 2rem; }
.card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 16px; padding: 2rem;
  transition: all 0.3s; position: relative; overflow: hidden;
}
.card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 20px 60px rgba(0,0,0,0.3); }
.card-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.card h3 { color: var(--white); margin-bottom: 0.5rem; }
.card-tag {
  display: inline-block; padding: 0.2rem 0.6rem;
  background: rgba(0,212,255,0.1); border-radius: 4px;
  font-size: 0.75rem; color: var(--accent); margin-bottom: 1rem;
}

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.pricing-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 16px; padding: 2.5rem;
  transition: all 0.3s; text-align: center;
}
.pricing-card:hover { border-color: var(--accent); }
.pricing-card.featured { border-color: var(--accent); position: relative; }
.pricing-card.featured::before {
  content: 'MOST POPULAR'; position: absolute; top: -12px; left: 50%;
  transform: translateX(-50%); background: var(--gradient);
  color: var(--white); padding: 0.3rem 1rem; border-radius: 50px;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 1px;
}
.pricing-card h3 { color: var(--white); margin-bottom: 0.5rem; }
.pricing-amount { font-size: 3rem; font-weight: 800; color: var(--white); margin: 1.5rem 0; }
.pricing-amount span { font-size: 1rem; color: var(--text-muted); font-weight: 400; }
.pricing-features { list-style: none; text-align: left; margin: 1.5rem 0 2rem; }
.pricing-features li { padding: 0.5rem 0; color: var(--text-muted); font-size: 0.9rem; }
.pricing-features li::before { content: '\2713'; color: var(--success); margin-right: 0.5rem; font-weight: 700; }
.pricing-card .btn { width: 100%; }

/* Proof / Results */
.results-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
.result-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 12px; padding: 2rem; text-align: center;
}
.result-number { font-size: 2.5rem; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.result-label { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.5rem; }

/* Case Studies */
.case-study {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 16px; padding: 3rem; margin-bottom: 2rem;
}
.case-study-label { color: var(--accent); font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 0.5rem; }
.case-study h3 { color: var(--white); font-size: 1.5rem; margin-bottom: 1rem; }
.case-study-metrics { display: flex; gap: 2rem; flex-wrap: wrap; margin: 1.5rem 0; }
.metric { text-align: center; }
.metric-value { font-size: 1.8rem; font-weight: 800; color: var(--success); }
.metric-label { font-size: 0.8rem; color: var(--text-muted); }

/* Research */
.research-list { display: grid; gap: 1rem; }
.research-item {
  display: flex; gap: 1.5rem; align-items: center;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.5rem;
  transition: border-color 0.3s;
}
.research-item:hover { border-color: var(--accent); }
.research-date { color: var(--accent); font-size: 0.8rem; font-weight: 600; white-space: nowrap; min-width: 80px; }
.research-title { color: var(--white); font-weight: 500; }

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, rgba(0,212,255,0.1) 0%, rgba(102,0,255,0.1) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.cta-section h2 { color: var(--white); }
.cta-section p { font-size: 1.1rem; max-width: 600px; margin: 0 auto 2rem; }

/* Footer */
footer {
  padding: 3rem 0; border-top: 1px solid var(--border);
  text-align: center; color: var(--text-muted); font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .nav-links.active {
    display: flex; flex-direction: column; position: absolute;
    top: 100%; left: 0; width: 100%; background: rgba(10,22,40,0.98);
    padding: 2rem; gap: 1rem;
  }
  .hero-stats { flex-direction: column; gap: 1.5rem; }
  .btn-group { flex-direction: column; }
  .case-study-metrics { flex-direction: column; }
  .card-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
}