/* CSS Variables */
:root {
  --primary: #1e293b;
  --accent: #06b6d4;
  --bg: #f8fafc;
  --text-dark: #0f172a;
  --text-muted: #64748b;
  --surface: #ffffff;
  --border: #e2e8f0;
  --spacing: 16px;
  --radius: 8px;
}

/* Reset & Base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-dark);
  background: var(--bg);
  line-height: 1.5;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 calc(var(--spacing) * 1.5); }

/* Navbar */
.navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: 0.5px;
}
nav a {
  color: var(--text-dark);
  text-decoration: none;
  margin: 0 8px;
  font-size: 0.95rem;
}
nav a:hover, nav a.active { color: var(--accent); }
.hamburger { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; }
.nav-links { display: flex; gap: 8px; align-items: center; }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, #334155 100%);
  color: var(--surface);
  padding: calc(var(--spacing) * 4) 0;
}
.hero-content { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.hero h1 { margin: 0; font-size: 2rem; }
.hero-ctas { display: flex; gap: 12px; margin-top: 8px; }

/* Buttons */
.btn {
  display: inline-block; padding: 10px 24px; border-radius: var(--radius); text-decoration: none;
  font-weight: 600; font-size: 0.95rem; transition: all 0.2s;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}
.btn-outline {
  background: transparent;
  color: var(--surface);
  border: 1px solid rgba(255,255,255,0.3);
}
.btn:hover { opacity: 0.9; transform: translateY(-1px); }

/* Section */
.section { padding: calc(var(--spacing) * 4) 0; }
.section h2 { text-align: center; margin-bottom: 32px; font-size: 1.75rem; }

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 24px; border-radius: var(--radius);
  text-align: center; transition: box-shadow 0.2s;
}
.service-card:hover { box-shadow: 0 6px 24px rgba(0,0,0,0.06); }
.service-card .icon { font-size: 2rem; display: block; margin-bottom: 12px; }
.service-card h3 { margin: 0 0 8px; font-size: 1.1rem; }
.service-card p { margin: 0; color: var(--text-muted); font-size: 0.9rem; }

/* Credentials Strip */
.credentials-strip {
  background: var(--primary);
  color: var(--surface);
  padding: 16px 0;
}
.credentials { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; font-size: 0.9rem; }

/* About Grid */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.about-text h2, .about-features h3 { color: var(--primary); }
.feature { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 16px; }
.feature .icon { font-size: 1.5rem; flex-shrink: 0; margin-top: 2px; }

/* CTA Strip */
.cta-strip {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 32px; text-align: center;
  border-radius: var(--radius);
}
.cta-strip h2 { margin: 0 0 8px; }
.cta-strip p { margin: 0 0 16px; color: var(--text-muted); }

/* Footer */
.footer {
  background: var(--primary);
  color: var(--surface);
  padding: 32px 0 16px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}
.footer-col h3, .footer-col strong { color: var(--accent); margin-bottom: 12px; display: block; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col a { color: #cbd5e1; text-decoration: none; }
.footer-col a:hover { color: var(--accent); }
.footer-meta { display: flex; gap: 16px; margin-top: 8px; font-size: 0.85rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 16px 0;
  text-align: center;
  font-size: 0.85rem;
  color: #94a3b8;
}

/* Responsive */
@media (max-width: 768px) {
  .hamburger { display: block; }
  .nav-links { display: none; position: absolute; top: 64px; right: 0; background: var(--surface); width: 100%; flex-direction: column; padding: 12px; border-bottom-left-radius: var(--radius); border-bottom-right-radius: var(--radius); box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
  .nav-links.show { display: flex; }
  .hero-content { align-items: center; text-align: center; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.75rem; }
}