* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }
    
    body {
      background: linear-gradient(135deg, #1A120B 0%, #3C2A21 100%);
      min-height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 20px;
      color: #E5E5CB;
    }
    
    .background-pattern {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: 
        radial-gradient(circle at 10% 20%, rgba(58, 45, 33, 0.3) 0%, transparent 15%),
        radial-gradient(circle at 90% 80%, rgba(58, 45, 33, 0.3) 0%, transparent 15%);
      z-index: -1;
    }
    
    .auth-container {
      max-width: 500px;
      width: 100%;
      perspective: 1000px;
    }
    
    .auth-card {
      background: #3C2A21;
      border-radius: 20px;
      padding: 40px 30px;
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
      transition: transform 0.6s;
      transform-style: preserve-3d;
      position: relative;
      overflow: hidden;
    }
    
    .auth-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 5px;
      background: #D5CEA3;
    }
    
    .auth-header {
      text-align: center;
      margin-bottom: 30px;
    }
    
    .auth-title {
      font-size: 2.2rem;
      color: #D5CEA3;
      margin-bottom: 10px;
    }
    
    .auth-subtitle {
      color: #A69B86;
      font-size: 1.1rem;
    }
    
    .avatar {
      width: 100px;
      height: 100px;
      background: #1A120B;
      border-radius: 50%;
      margin: 0 auto 25px;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 3px solid #D5CEA3;
    }
    
    .avatar i {
      font-size: 2.5rem;
      color: #D5CEA3;
    }
    
    .input-group {
      position: relative;
      margin-bottom: 25px;
    }
    
    .input-icon {
      position: absolute;
      left: 15px;
      top: 50%;
      transform: translateY(-50%);
      color: #D5CEA3;
      font-size: 18px;
    }
    
    .auth-input {
      width: 100%;
      padding: 14px 14px 14px 45px;
      border: 2px solid #5D4A3F;
      border-radius: 10px;
      background: #1A120B;
      color: #E5E5CB;
      font-size: 1rem;
      transition: all 0.3s ease;
    }
    
    .auth-input:focus {
      border-color: #D5CEA3;
      outline: none;
      box-shadow: 0 0 0 3px rgba(213, 206, 163, 0.2);
    }
    
    .error-message {
      color: #ff6b6b;
      text-align: center;
      min-height: 24px;
      margin: 10px 0;
      font-size: 0.9rem;
    }
    
    .auth-btn {
      width: 100%;
      padding: 14px;
      background: #D5CEA3;
      color: #1A120B;
      border: none;
      border-radius: 10px;
      font-size: 1.1rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      margin-top: 10px;
    }
    
    .auth-btn:hover {
      background: #C5BC8E;
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }
    
    .footer-links {
      display: flex;
      justify-content: space-between;
      margin-top: 25px;
      padding-top: 20px;
      border-top: 1px solid #5D4A3F;
    }
    
    .footer-link {
      color: #D5CEA3;
      text-decoration: none;
      font-weight: 500;
      cursor: pointer;
      transition: color 0.3s ease;
    }
    
    .footer-link:hover {
      color: #C5BC8E;
      text-decoration: underline;
    }
    
    /* Social Login Section */
    .social-section {
      margin: 25px 0;
    }
    
    .social-divider {
      display: flex;
      align-items: center;
      margin-bottom: 20px;
    }
    
    .social-divider span {
      padding: 0 15px;
      color: #A69B86;
      font-size: 0.9rem;
    }
    
    .social-divider::before,
    .social-divider::after {
      content: '';
      flex: 1;
      height: 1px;
      background: #5D4A3F;
    }
    
    .social-buttons {
      display: flex;
      justify-content: center;
      gap: 15px;
    }
    
    .social-btn {
      flex: 1;
      padding: 12px;
      border: none;
      border-radius: 8px;
      font-weight: 600;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      cursor: pointer;
      transition: all 0.3s ease;
      max-width: 150px;
    }
    
    .social-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }
    
    .google-btn {
      background: #4285F4;
      color: white;
    }
    
    .github-btn {
      background: #333;
      color: white;
    }
    
    /* Responsive design */
    @media (max-width: 480px) {
      .auth-card {
        padding: 30px 20px;
      }
      
      .auth-title {
        font-size: 1.8rem;
      }
      
      .avatar {
        width: 80px;
        height: 80px;
      }
      
      .social-buttons {
        flex-direction: column;
        align-items: center;
      }
      
      .social-btn {
        max-width: 100%;
        width: 100%;
      }
      
      .footer-links {
        flex-direction: column;
        gap: 10px;
        align-items: center;
      }
    }