/* Base reset and font stack */
:root {
  --bg: #f9fafb;
  --text: #1f2937;
  --accent: #0049b7;   /* deep blue */
  --accent-light: #e0e7ff;
  --border: #d1d5db;
  --muted: #6b7280;
  --max-width: 900px;
  --font-body: "Inter", "Work Sans", "Helvetica Neue", Arial, sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  font-size: 17px;
}

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

/* Header */
.header {
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 1rem 0 0.5rem;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.logo {
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  margin-left: 1.25rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--accent);
}

/* Hero */
.hero {
  background: var(--accent-light);
  padding: 4rem 1.5rem;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--accent);
}

.hero p {
  font-size: 1.2rem;
  color: var(--text);
  max-width: 650px;
  margin: 0 auto;
}

/* Section */
.section {
  padding: 3rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.section h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: var(--accent);
}

.section p,
.section li {
  margin-bottom: 1rem;
}

.section ul {
  list-style: disc;
  padding-left: 1.5rem;
}

/* Contact */
#contact a {
  color: var(--accent);
  text-decoration: none;
}

#contact a:hover {
  text-decoration: underline;
}

/* Footer */
.footer {
  background: white;
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 1.5rem 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 2rem;
  }

  .section h2 {
    font-size: 1.5rem;
  }

  .nav-links {
    font-size: 0.95rem;
  }
}