/* ====== Base ====== */
* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f9fafb;
  color: #111827;
  line-height: 1.6;
}

/* ====== Header ====== */
header {
  background: #111827;
  color: white;
  padding: 30px 20px;
  text-align: center;
}

header h1 {
  margin: 10px 0 5px;
  font-size: 2rem;
}

header p {
  margin: 0;
  font-size: 1.1rem;
  color: #d1d5db;
}

nav {
  margin-top: 15px;
}

nav a {
  color: #60a5fa;
  margin: 0 15px;
  text-decoration: none;
  font-weight: 500;
}

nav a:hover {
  text-decoration: underline;
}

/* ====== Hero Section ====== */
.hero {
  text-align: center;
  padding: 60px 20px;
  margin: 30px auto;
  max-width: 900px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);

  background: linear-gradient(135deg, #111827, #374151);
  color: white;
}

.hero h2 {
  font-size: 2rem;
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 0;
  color: #e5e7eb;
}

/* ====== Main Content ====== */
main {
  max-width: 900px;
  margin: 20px auto 40px;
  padding: 20px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

h2 {
  color: #111827;
  margin-top: 0;
}

section h3 {
  margin-bottom: 5px;
}

ul {
  padding-left: 20px;
}

a {
  color: #1e3a8a;
}

a:hover {
  opacity: 0.8;
}

/* ====== Footer ====== */
footer {
  text-align: center;
  padding: 20px;
  background: #f3f4f6;
  font-size: 0.9rem;
  color: #6b7280;
}

footer nav {
  margin-top: 10px;
}

footer nav a {
  margin: 0 8px;
  color: #1e3a8a;
  text-decoration: none;
}

footer nav a:hover {
  text-decoration: underline;
}