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

      body {
        font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
        background: linear-gradient(
          135deg,
          #2c3e50 0%,
          #34495e 50%,
          #2c3e50 100%
        );
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 20px;
      }

      .login-container {
        background: rgba(255, 255, 255, 0.95);
        padding: 2.5rem;
        border-radius: 10px;
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        width: 100%;
        max-width: 400px;
      }

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

      .login-header h1 {
        color: #2c3e50;
        margin-bottom: 0.5rem;
        font-size: 1.8rem;
        text-shadow: none;
      }

      .login-header p {
        color: #7f8c8d;
        font-size: 0.9rem;
        font-style: normal;
      }

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

      .form-group label {
        display: block;
        margin-bottom: 0.5rem;
        color: #333;
        font-weight: 500;
        font-size: 1rem;
      }

      .input-container {
        position: relative;
        width: 100%;
      }

      .form-group input {
        width: 100%;
        padding: 0.75rem 3rem 0.75rem 1rem;
        border: 2px solid #bdc3c7;
        border-radius: 8px;
        font-size: 1rem;
        transition: all 0.3s ease;
        background: white;
      }

      .form-group input:focus {
        outline: none;
        border-color: #3498db;
        box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
        transform: translateY(-1px);
      }

      .toggle-password {
        position: absolute;
        right: 15px;
        top: 50%;
        transform: translateY(-50%);
        background: none;
        border: none;
        cursor: pointer;
        font-size: 1.2rem;
        color: #7f8c8d;
        transition: color 0.3s ease;
      }

      .toggle-password:hover {
        color: #3498db;
      }

      .login-btn {
        width: 100%;
        padding: 0.75rem;
        background: linear-gradient(135deg, #3498db, #2980b9);
        color: white;
        border: none;
        border-radius: 8px;
        font-size: 1rem;
        font-weight: 600;
        cursor: pointer;
        transition: transform 0.2s ease;
      }

      .login-btn:hover {
        transform: translateY(-1px);
      }

      .error-message {
        background: #ffeaea;
        color: #e74c3c;
        padding: 1rem;
        border-radius: 8px;
        margin-bottom: 1rem;
        border-left: 4px solid #e74c3c;
        animation: shake 0.5s ease-in-out;
      }

      .success-message {
        background: #eafaf1;
        color: #27ae60;
        padding: 1rem;
        border-radius: 8px;
        margin-bottom: 1rem;
        border-left: 4px solid #27ae60;
      }

      .footer {
        text-align: center;
        margin-top: 2rem;
        color: #95a5a6;
        font-size: 0.8rem;
      }

      @keyframes shake {
        0%,
        100% {
          transform: translateX(0);
        }
        25% {
          transform: translateX(-5px);
        }
        75% {
          transform: translateX(5px);
        }
      }

      @media (max-width: 480px) {
        .login-container {
          margin: 1rem;
          padding: 2rem;
        }

        .login-header h1 {
          font-size: 1.5rem;
        }
      }