body {
  margin: 0;
  font-family:
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    Helvetica,
    Arial,
    sans-serif;

  background: #f6f8fb;
  color: #0f172a;

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

  min-height: 100vh;
  padding: 15px;
}

.login-container {
  width: 100%;
  max-width: 420px;

  background: white;

  padding: 26px;

  border-radius: 14px;

  box-shadow: 0 10px 30px rgba(2, 6, 23, 0.08);
}

.header {
  text-align: center;
  margin-bottom: 18px;
}

.header h2 {
  margin: 0;
  font-size: 22px;
}

.header p {
  margin-top: 6px;
  color: #6b7280;
  font-size: 14px;
}

label {
  display: block;
  font-weight: 600;

  margin-bottom: 6px;
  font-size: 14px;
}

input {
  width: 92%;
  padding: 14px;

  border-radius: 12px;

  border: 1px solid #e5e7eb;

  font-size: 16px;

  outline: none;

  transition: 0.2s;
}

input:focus {
  border-color: #60a5fa;

  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

.hint {
  font-size: 12px;

  color: #6b7280;

  margin-top: 6px;
}

.send-btn {
  width: 100%;

  padding: 14px;

  margin-top: 14px;

  border: none;

  border-radius: 12px;

  background: #008676;

  color: white;

  font-size: 16px;

  font-weight: 700;

  cursor: pointer;
}

.send-btn:hover {
  background: #1d4ed8;
}

.footer-text {
  text-align: center;

  color: #6b7280;

  font-size: 12px;

  margin-top: 16px;
}

.alert {
  padding: 10px;

  border-radius: 8px;

  margin-bottom: 10px;

  font-size: 14px;
}

.alert.danger {
  background: #fdecea;
  color: #b00020;
}

.alert.success {
  background: #e8f5e9;
  color: #1b5e20;
}

.alert.warning {
  background: #fff8e1;
  color: #9e7700;
}

.alert.info {
  background: #e3f2fd;
  color: #0d47a1;
}

/* Mobile responsive */

@media (max-width: 480px) {
  .login-container {
    padding: 20px;
  }

  input {
    font-size: 15px;
    padding: 12px;
  }

  .send-btn {
    padding: 12px;
  }
}