/* ReguSoft — Medical Device Cybersecurity Compliance */
:root {
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-800: #1e40af;
  --blue-900: #1e3a8a;
  --indigo-500: #6366f1;
  --indigo-600: #4f46e5;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --white: #ffffff;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-w: 1140px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--slate-700);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

/* --- NAV --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--slate-200);
  padding: 0 24px;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo img { height: 36px; }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a {
  text-decoration: none;
  color: var(--slate-600);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--blue-700); }
.nav-cta {
  background: var(--blue-600);
  color: var(--white) !important;
  padding: 8px 20px;
  border-radius: 6px;
  font-weight: 600 !important;
  transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--blue-700) !important; }

/* Mobile nav */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--slate-700); margin: 5px 0; transition: 0.3s; }

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--slate-200);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  }
  .nav-links.open { display: flex; }
}

/* --- HERO --- */
.hero {
  padding: 140px 24px 80px;
  text-align: center;
  background: linear-gradient(180deg, var(--slate-50) 0%, var(--white) 100%);
}
.hero-inner {
  max-width: 720px;
  margin: 0 auto;
}
.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.15;
  margin-bottom: 20px;
}
.hero p {
  font-size: 1.2rem;
  color: var(--slate-500);
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  display: inline-block;
  background: var(--blue-600);
  color: var(--white);
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
}
.btn-primary:hover { background: var(--blue-700); transform: translateY(-1px); }
.btn-secondary {
  display: inline-block;
  background: var(--white);
  color: var(--slate-700);
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: 1px solid var(--slate-200);
  transition: border-color 0.2s, transform 0.1s;
}
.btn-secondary:hover { border-color: var(--slate-400); transform: translateY(-1px); }

@media (max-width: 640px) {
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1.05rem; }
}

/* --- SECTIONS --- */
section { padding: 80px 24px; }
.section-inner { max-width: var(--max-w); margin: 0 auto; }
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--slate-900);
  text-align: center;
  margin-bottom: 16px;
}
.section-subtitle {
  text-align: center;
  color: var(--slate-500);
  max-width: 600px;
  margin: 0 auto 48px;
  font-size: 1.05rem;
}

/* Alternating section backgrounds */
section:nth-child(even) { background: var(--slate-50); }

/* --- SERVICES --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  padding: 32px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.service-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.service-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--blue-600), var(--indigo-500));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--white);
  font-size: 1.4rem;
}
.service-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--slate-800);
  margin-bottom: 12px;
}
.service-card p {
  color: var(--slate-500);
  line-height: 1.7;
}
.service-card.featured {
  border-color: var(--blue-600);
  border-width: 2px;
  grid-column: 1 / -1;
}
.service-option {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--slate-200);
}
.option-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--blue-600), var(--indigo-500));
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 8px;
}
.service-option p {
  font-size: 0.9rem;
}

/* --- STANDARDS --- */
.standards-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}
.standard-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 8px;
  font-weight: 500;
  color: var(--slate-700);
}
.standard-check {
  color: var(--blue-600);
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* --- CREDENTIALS --- */
.credentials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  text-align: center;
}
.credential-stat {
  padding: 24px;
}
.credential-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--blue-600);
  line-height: 1;
  margin-bottom: 8px;
}
.credential-label {
  color: var(--slate-500);
  font-size: 0.95rem;
}

/* --- RESOURCES PREVIEW --- */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.resource-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.2s;
  display: block;
}
.resource-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.resource-tag {
  display: inline-block;
  background: var(--blue-600);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.resource-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--slate-800);
  margin-bottom: 8px;
  line-height: 1.4;
}
.resource-card p {
  color: var(--slate-500);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* --- CTA --- */
.cta {
  background: linear-gradient(135deg, var(--blue-800), var(--indigo-600));
  padding: 80px 24px;
  text-align: center;
}
.cta h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}
.cta p {
  color: rgba(255,255,255,0.85);
  font-size: 1.1rem;
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.btn-white {
  display: inline-block;
  background: var(--white);
  color: var(--blue-800);
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  transition: transform 0.1s, box-shadow 0.2s;
}
.btn-white:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* --- FOOTER --- */
.footer {
  background: var(--slate-900);
  color: var(--slate-400);
  padding: 48px 24px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-links { display: flex; gap: 24px; list-style: none; }
.footer-links a {
  color: var(--slate-400);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--white); }