* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .signup-container {
            background: white;
            border-radius: 10px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
            padding: 40px;
            max-width: 500px;
            width: 100%;
        }
        
        .signup-container h1 {
            color: #333;
            margin-bottom: 10px;
            text-align: center;
            font-size: 28px;
        }
        
        .signup-container p {
            color: #666;
            text-align: center;
            margin-bottom: 30px;
            font-size: 14px;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #333;
            font-weight: 600;
            font-size: 14px;
        }
        
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 12px;
            border: 2px solid #e0e0e0;
            border-radius: 5px;
            font-size: 14px;
            transition: border-color 0.3s;
            font-family: inherit;
        }
        
        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: #667eea;
            background-color: #f8f9ff;
        }
        
        .form-group input::placeholder {
            color: #999;
        }
        
        .role-selector {
            display: flex;
            gap: 15px;
            margin-bottom: 20px;
        }
        
        .role-option {
            flex: 1;
        }
        
        .role-option input[type="radio"] {
            display: none;
        }
        
        .role-option label {
            display: block;
            padding: 12px;
            text-align: center;
            border: 2px solid #e0e0e0;
            border-radius: 5px;
            cursor: pointer;
            transition: all 0.3s;
            margin-bottom: 0;
            background-color: #f9f9f9;
        }
        
        .role-option input[type="radio"]:checked + label {
            border-color: #667eea;
            background-color: #667eea;
            color: white;
            font-weight: 600;
        }
        
        .password-group {
            position: relative;
        }
        
        .toggle-password {
            position: absolute;
            right: 12px;
            top: 38px;
            cursor: pointer;
            color: #666;
            font-size: 18px;
        }
        
        .toggle-password:hover {
            color: #333;
        }
        
        .password-strength {
            margin-top: 8px;
            padding: 8px;
            border-radius: 3px;
            font-size: 12px;
            font-weight: 600;
        }
        
        .password-strength.weak {
            background-color: #ffebee;
            color: #c62828;
        }
        
        .password-strength.medium {
            background-color: #fff3e0;
            color: #e65100;
        }
        
        .password-strength.strong {
            background-color: #e8f5e9;
            color: #2e7d32;
        }
        
        .terms-checkbox {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .terms-checkbox input[type="checkbox"] {
            width: 18px;
            height: 18px;
            margin-right: 10px;
            cursor: pointer;
        }
        
        .terms-checkbox label {
            margin-bottom: 0;
            font-weight: 400;
            font-size: 13px;
            color: #666;
        }
        
        .terms-checkbox a {
            color: #667eea;
            text-decoration: none;
        }
        
        .terms-checkbox a:hover {
            text-decoration: underline;
        }
        
        .signup-btn {
            width: 100%;
            padding: 12px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        
        .signup-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
        }
        
        .signup-btn:active {
            transform: translateY(0);
        }
        
        .signup-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }
        
        .login-link {
            text-align: center;
            margin-top: 20px;
            color: #666;
            font-size: 14px;
        }
        
        .login-link a {
            color: #667eea;
            text-decoration: none;
            font-weight: 600;
        }
        
        .login-link a:hover {
            text-decoration: underline;
        }
        
        .error-message {
            color: #c62828;
            font-size: 12px;
            margin-top: 5px;
            display: none;
        }
        
        .spinner {
            display: none;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: white;
            animation: spin 0.8s linear infinite;
            margin-right: 10px;
        }
        
        .signup-btn.loading .spinner {
            display: inline-block;
        }

        .signup-link {
            text-align: center;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #e0e0e0;
        }
        
        .signup-link p {
            margin: 0;
            color: #666;
            font-size: 14px;
        }
        
        .signup-link a {
            color: #667eea;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .signup-link a:hover {
            color: #764ba2;
            text-decoration: underline;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }