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

body {
  font-family: "Segoe UI", sans-serif;
  background: #f4f6f9;
  color: #333;
}

.register-container {
  min-height: 100vh;

  display: flex;
  align-items: center;
  justify-content: center;

  padding: 40px 20px;
}

.register-card {
  width: 100%;
  max-width: 650px;

  background: white;

  padding: 35px 40px;

  border-radius: 12px;

  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
}

.register-header {
  text-align: center;

  margin-bottom: 30px;
}

.logo {
  font-size: 40px;

  margin-bottom: 10px;
}

.register-header h1 {
  color: #003366;

  font-size: 26px;

  margin-bottom: 6px;
}

.register-header p {
  color: #777;

  font-size: 14px;
}

.error-message {
  background: #f8d7da;

  color: #842029;

  border: 1px solid #f5c2c7;

  padding: 12px 15px;

  border-radius: 6px;

  font-size: 14px;

  margin-bottom: 20px;
}

.form-row {
  display: grid;

  grid-template-columns: 1fr 1fr;

  gap: 15px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;

  color: #444;

  font-size: 14px;

  font-weight: 600;

  margin-bottom: 7px;
}

.form-group input,
.form-group select {
  width: 100%;

  padding: 11px 13px;

  border: 1px solid #d5d9de;

  border-radius: 6px;

  font-size: 14px;

  background: white;

  outline: none;

  transition: 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  border-color: #003366;

  box-shadow: 0 0 0 3px rgba(0, 51, 102, 0.08);
}

.register-btn {
  width: 100%;

  border: none;

  background: #003366;

  color: white;

  padding: 12px;

  border-radius: 6px;

  font-size: 15px;

  font-weight: 600;

  cursor: pointer;

  transition: 0.2s;

  margin-top: 5px;
}

.register-btn:hover {
  background: #00264d;
}

.login-link {
  text-align: center;

  margin-top: 22px;

  color: #666;

  font-size: 14px;
}

.login-link a {
  color: #003366;

  font-weight: 600;

  text-decoration: none;
}

.login-link a:hover {
  text-decoration: underline;
}

.back-link {
  text-align: center;

  margin-top: 15px;

  font-size: 13px;
}

.back-link a {
  color: #777;

  text-decoration: none;
}

.back-link a:hover {
  color: #003366;
}

@media (max-width: 600px) {
  .register-container {
    padding: 20px 15px;
  }

  .register-card {
    padding: 28px 22px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .register-header h1 {
    font-size: 23px;
  }
}