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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f3f4f6;
  color: #111827;
  line-height: 1.6;
}

/* Layout helpers */
.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

/* Header */
.site-header {
  background: #0f172a; /* dark navy/black */
  color: #f9fafb;
  border-bottom: 1px solid #1f2937;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-initials {
  background: #2563eb; /* blue */
  color: #f9fafb;
  font-weight: bold;
  padding: 0.4rem 0.6rem;
  border-radius: 999px;
  font-size: 0.9rem;
}

.logo-text {
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* Navigation */
.main-nav a {
  color: #e5e7eb;
  text-decoration: none;
  margin-left: 1.2rem;
  font-size: 0.95rem;
  padding-bottom: 0.2rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.main-nav a:hover {
  color: #ffffff;
  border-color: #4b5563;
}

.main-nav a.active {
  color: #ffffff;
  border-color: #2563eb;
}

/* Hero section */
.hero {
  background: linear-gradient(135deg, #1d4ed8 0%, #020617 60%);
  color: #e5e7eb;
  padding: 3rem 0 3.5rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: 2fr 1.2fr;
  gap: 2rem;
  align-items: stretch;
}

.hero h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.hero p {
  margin-bottom: 0.7rem;
  color: #e5e7eb;
}

.btn-primary {
  display: inline-block;
  margin-top: 1rem;
  background: #2563eb;
  color: #f9fafb;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.4);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.6);
}

/* Hero card */
.hero-card {
  background: rgba(15, 23, 42, 0.9);
  border-radius: 0.9rem;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.hero-card h2 {
  font-size: 1.25rem;
  margin-bottom: 0.8rem;
}

.hero-card p {
  font-size: 0.95rem;
}

.hero-note {
  margin-top: 0.8rem;
  font-style: italic;
  color: #cbd5f5;
}

/* Main content */
.main-content {
  padding: 2.5rem 0 3rem;
}

.content-section {
  background: #ffffff;
  border-radius: 0.75rem;
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 8px 16px rgba(15, 23, 42, 0.06);
  border: 1px solid #e5e7eb;
}

.content-section h2 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: #111827;
}

.content-section p {
  margin-bottom: 0.7rem;
  color: #374151;
}

/* Links */
a {
  color: #2563eb;
}

a:hover {
  color: #1d4ed8;
}

/* Footer */
.site-footer {
  background: #020617;
  color: #9ca3af;
  padding: 1.5rem 0;
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.footer-nav a {
  color: #9ca3af;
  text-decoration: none;
  margin-left: 1.2rem;
  transition: color 0.2s ease;
}

.footer-nav a:first-child {
  margin-left: 0;
}

.footer-nav a:hover {
  color: #e5e7eb;
}

/* Responsive */
@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .hero-inner {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}