* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  text-align: center;
  width: 100%;
  max-width: 600px;
  padding: 20px;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 5px;
}

.subtitle {
  color: #facc15;
  margin-bottom: 30px;
}

.card {
  background: #1e293b;
  padding: 30px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.card h2 {
  margin-bottom: 15px;
}

.card p {
  margin-bottom: 15px;
  line-height: 1.5;
}

.divider {
  height: 1px;
  background: #334155;
  margin: 20px 0;
}

.mail {
  display: inline-block;
  background: #facc15;
  color: #000;
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: bold;
  text-decoration: none;
  margin-bottom: 15px;
  transition: 0.2s;
}

.mail:hover {
  background: #fde047;
}

.small {
  font-size: 0.9rem;
  color: #cbd5f5;
}

footer {
  margin-top: 20px;
  font-size: 0.8rem;
  color: #94a3b8;
}