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

  body {
    font-family: 'Segoe UI', 'Arial', sans-serif;
    background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
    color: #f5f5f5;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }

  header {
    background: #032541;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    padding: 0.5rem 0;
  }

  .header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
  }

  .logo {
    display: flex;
    align-items: center;
  }

  .logo img {
    height: 48px;
    filter: drop-shadow(0 2px 4px #0008);
  }

  .logo a {
    text-decoration: none;
  }

  .back-link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    transition: background 0.2s;
  }

  .back-link:hover {
    background: #205375;
  }
  main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
  }

  .login-container {
    background: #1b2a3a;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    padding: 3rem;
    width: 100%;
    max-width: 400px;
  }

  .login-header {
    text-align: center;
    margin-bottom: 2rem;
  }

  .login-header h1 {
    color: #21d07a;
    font-size: 2rem;
    margin-bottom: 0.5rem;
  }

  .login-header p {
    color: #ccc;
    font-size: 1rem;
  }

  .form-group {
    margin-bottom: 1.5rem;
  }

  .form-group label {
    display: block;
    color: #fff;
    margin-bottom: 0.5rem;
    font-weight: 500;
  }

  .form-group input {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid #2c5364;
    border-radius: 6px;
    background: #0d253f;
    color: #fff;
    font-size: 1rem;
    transition: border-color 0.2s;
  }

  .form-group input:focus {
    outline: none;
    border-color: #21d07a;
  }

  .form-group input::placeholder {
    color: #888;
  }

  .form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
  }

  .remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .remember-me input[type="checkbox"] {
    width: auto;
    margin: 0;
  }

  .forgot-password {
    color: #21d07a;
    text-decoration: none;
    font-size: 0.9rem;
  }

  .forgot-password:hover {
    text-decoration: underline;
  }

  .login-button {
    width: 100%;
    background: #21d07a;
    color: #032541;
    border: none;
    border-radius: 6px;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
    margin-bottom: 1.5rem;
  }

  .login-button:hover {
    background: #1bb86a;
  }

  .divider {
    text-align: center;
    margin: 1.5rem 0;
    position: relative;
  }

  .divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #2c5364;
  }

  .divider span {
    background: #1b2a3a;
    padding: 0 1rem;
    color: #888;
    font-size: 0.9rem;
  }

  .social-login {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
  }

  .social-button {
    flex: 1;
    padding: 0.8rem;
    border: 2px solid #2c5364;
    border-radius: 6px;
    background: transparent;
    color: #fff;
    cursor: pointer;
    transition: border-color 0.2s;
    font-size: 0.9rem;
  }

  .social-button:hover {
    border-color: #21d07a;
  }

  .signup-link {
    text-align: center;
    color: #ccc;
  }

  .signup-link a {
    color: #21d07a;
    text-decoration: none;
    font-weight: 500;
  }

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

  footer {
    background: #032541;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
    font-size: 0.9rem;
  }

  @media (max-width: 600px) {
    .login-container {
      padding: 2rem 1.5rem;
      margin: 1rem;
    }

    .social-login {
      flex-direction: column;
    }

    .form-options {
      flex-direction: column;
      gap: 1rem;
      align-items: flex-start;
    }
  }