:root {
            --primary: #4CAF50;
            --primary-dark: #388E3C;
            --primary-light: #81C784;
            --secondary: #2196F3;
            --success: #43a047;
            --danger: #e53935;
            --warning: #ff9800;
            --light: #ffffff;
            --dark: #2c3e50;
            --gray: #95a5a6;
            --light-gray: #f8f9fa;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            background: linear-gradient(135deg, #2196F3 45%, #388E3C 40%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .auth-container {
            background: var(--light);
            border-radius: 20px;
            width: 100%;
            max-width: 400px;
            position: relative;
            overflow: hidden;
        }
        
        .auth-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            padding: 60px 30px 40px;
            text-align: center;
            position: relative;
        }
        
        .logo-circle {
            width: 50px;
            height: 50px;
            background: var(--light);
            border-radius: 50%;
            margin: 0 auto 25px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 5px solid rgba(255, 255, 255, 0.2);
            position: absolute;
            top: 5px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
        }
        
        .logo-circle i {
            font-size: 1.5rem;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .auth-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--light);
            margin-bottom: 8px;
        }
        
        .auth-subtitle {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.9);
            font-weight: 400;
        }
        
        .auth-content {
            padding: 30px;
        }
        
        .form-group {
            margin-bottom: 25px;
            position: relative;
        }
        
        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
        }
        
        .input-group {
            position: relative;
        }
        
        .input-icon {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--primary);
            font-size: 1.1rem;
            width: 20px;
            text-align: center;
            z-index: 2;
        }
        
        .form-input {
            width: 100%;
            padding: 14px 15px 14px 45px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 1rem;
            color: var(--dark);
            background: var(--light);
            transition: all 0.3s ease;
        }
        
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
        }
        
        .password-toggle {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--gray);
            cursor: pointer;
            padding: 5px;
            font-size: 1.1rem;
        }
        
        .password-toggle:hover {
            color: var(--primary);
        }
        
        .role-selection {
            margin-bottom: 25px;
        }
        
        .role-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 12px;
        }
        
        .role-options {
            display: flex;
            gap: 10px;
        }
        
        .role-option {
            flex: 1;
            padding: 15px 10px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            background: var(--light);
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .role-option:hover {
            border-color: var(--primary);
        }
        
        .role-option.selected {
            border-color: var(--primary);
            background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(33, 150, 243, 0.1) 100%);
        }
        
        .role-icon {
            font-size: 1.4rem;
            margin-bottom: 8px;
            color: var(--gray);
        }
        
        .role-option.selected .role-icon {
            color: var(--primary);
        }
        
        .role-name {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--dark);
        }
        
        .remember-forgot {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
        }
        
        .remember-me {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--dark);
        }
        
        .checkbox {
            width: 18px;
            height: 18px;
            border: 2px solid var(--primary);
            border-radius: 4px;
            cursor: pointer;
            position: relative;
        }
        
        .checkbox.checked::after {
            content: '✓';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: var(--primary);
            font-size: 0.9rem;
            font-weight: bold;
        }
        
        .forgot-password {
            font-size: 0.9rem;
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
        }
        
        .forgot-password:hover {
            color: var(--primary-dark);
        }
        
        .auth-button {
            width: 100%;
            padding: 16px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: var(--light);
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        
        .auth-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(76, 175, 80, 0.2);
        }
        
        .auth-button:active {
            transform: translateY(0);
        }
        
        .auth-button:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            transform: none;
        }
        
        .loading-spinner {
            width: 20px;
            height: 20px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-top-color: white;
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        .auth-footer {
            text-align: center;
            margin-top: 25px;
            padding-top: 25px;
            border-top: 1px solid #e0e0e0;
        }
        
        .back-to-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s ease;
        }
        
        .back-to-home:hover {
            color: var(--primary-dark);
        }
        
        .toast {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--light);
            border-radius: 10px;
            padding: 15px 20px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
            display: flex;
            align-items: center;
            gap: 12px;
            transform: translateY(100px);
            opacity: 0;
            transition: all 0.3s ease;
            z-index: 1000;
            max-width: 400px;
        }
        
        .toast.show {
            transform: translateY(0);
            opacity: 1;
        }
        
        .toast.success {
            border-left: 4px solid var(--success);
        }
        
        .toast.error {
            border-left: 4px solid var(--danger);
        }
        
        .toast.warning {
            border-left: 4px solid var(--warning);
        }
        
        .toast-icon {
            font-size: 1.3rem;
        }
        
        .toast.success .toast-icon {
            color: var(--success);
        }
        
        .toast.error .toast-icon {
            color: var(--danger);
        }
        
        .toast.warning .toast-icon {
            color: var(--warning);
        }
        
        @media (max-width: 480px) {
            body {
                padding: 15px;
            }
            
            .auth-container {
                max-width: 100%;
            }
            
            .auth-header {
                padding: 60px 20px 35px;
            }
            
            .auth-content {
                padding: 25px 20px;
            }
            
            .role-options {
                flex-direction: column;
            }
            
            .toast {
                left: 20px;
                right: 20px;
                max-width: none;
                bottom: 20px;
            }
        }
        
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .fade-in {
            animation: fadeIn 0.5s ease forwards;
        }