* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont;
}

body {
  margin: 0;
  background: #f6f7f9;
  color: #111;
}

.app-header {
  text-align: center;
  padding: 30px 20px;
  background: #ffffff;
}

.logo {
  width: 90px;
  margin-bottom: 10px;
}

h1 {
  margin: 10px 0 5px;
}

.dashboard {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 20px;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 14px;
  text-align: center;
  font-size: 18px;
  text-decoration: none;
  color: #1a1a1a;
  box-shadow: 0 4px 10px rgba(0,0,0,0.06);
}

.card:hover {
  background: #f0f3ff;
}

.footer {
  text-align: center;
  padding: 20px;
  font-size: 13px;
  color: #666;
}