body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f3f4f6;
  color: #1f2937;
  align: middle;
}

.header {
  background-color: #1e40af;
  color: white;
  padding: 2rem 1rem;
  text-align: center;
}

.header h1 {
  margin: 0;
  font-size: 2rem;
}

.nav {
  margin-top: 0.5rem;
}

.nav a {
  margin: 0 1rem;
  color: #dbeafe;
  text-decoration: none;
  font-weight: bold;
}

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

.main {
  max-width: 800px;
  margin: 2rem auto;
  padding: 1rem;
  background: white;
  border-radius: 1rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.footer {
  text-align: center;
  padding: 1rem;
  color: #6b7280;
}

.footer a {
  margin: 0 0.5rem;
  color: #2563eb;
}

a {
  color: #2563eb;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.icon {
  width: 24px;
  height: 24px;
  vertical-align: middle;
}
.container {
      background: white;
      padding: 2rem;
      border-radius: 1rem;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
      max-width: 500px;
      width: 100%;
      vertical-align: middle;
      align: middle;
}
h1 {
      font-size: 1.5rem;
      margin-bottom: 1rem;
      text-align: center;
}
input, select {
      width: 100%;
      padding: 0.5rem;
      margin-bottom: 1rem;
      border: 1px solid #ccc;
      border-radius: 0.5rem;
      font-size: 1rem;
}
button {
      width: 100%;
      padding: 0.75rem;
      background-color: #2563eb;
      color: white;
      border: none;
      border-radius: 0.5rem;
      font-size: 1rem;
      cursor: pointer;
}
button:hover {
      background-color: #1e40af;
}
.result {
      margin-top: 1rem;
      background-color: #f9fafb;
      padding: 1rem;
      border-radius: 0.5rem;
}
.error {
      color: red;
      font-weight: bold;
}
.result p {
      margin: 0.3rem 0;
      font-size: 0.95rem;
}