/* OpsScaler | Business Landing Page */
:root {
  --bg-primary: #0a0f1c;
  --bg-secondary: #111827;
  --bg-card: #1a2235;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent: #06b6d4;
  --accent-hover: #22d3ee;
  --border: #1e293b;
  --container: 1120px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Layout */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 15, 28, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--accent);
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  margin-left: 2rem;
  transition: color 0.2s;
}

nav a:hover {
  color: var(--text-primary);
}

/* Hero */
.hero {
  padding: 10rem 0 6rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero h1 .accent {
  color: var(--accent);
}

.hero .subtitle {
  font-size: clamp(1.125rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  background: var(--accent);
  color: var(--bg-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border-radius: 8px;
  transition: background 0.2s, transform 0.2s;
}

.btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* Services */
.services {
  padding: 6rem 0;
  border-top: 1px solid var(--border);
}

.section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}

.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.service-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* Why Section */
.why {
  padding: 6rem 0;
  border-top: 1px solid var(--border);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.metric {
  text-align: center;
  padding: 2rem 1rem;
}

.metric .number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.metric .label {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* CTA */
.cta {
  padding: 6rem 0;
  text-align: center;
  border-top: 1px solid var(--border);
}

.cta h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.cta p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

/* Footer */
footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

footer p {
  color: var(--text-secondary);
  font-size: 0.8125rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    padding: 8rem 0 4rem;
  }

  .services,
  .why,
  .cta {
    padding: 4rem 0;
  }

  nav {
    display: none;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .metrics {
    grid-template-columns: 1fr;
  }
}