:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary: #f59e0b;
            --dark: #1f2937;
            --light: #f9fafb;
            --gray: #9ca3af;
            --success: #10b981;
            --error: #ef4444;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            background-color: #f3f4f6;
            color: var(--dark);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
            color: var(--dark);
            font-weight: 700;
            font-size: 1.5rem;
        }
        
        .logo-icon {
            color: var(--primary);
            font-size: 1.8rem;
        }
        
        /* Auth Container */
        .auth-container {
            display: flex;
            flex-grow: 1;
            align-items: center;
            justify-content: center;
            padding: 2rem 0;
        }
        
        .auth-card {
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
            width: 100%;
            max-width: 420px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .auth-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .auth-header {
            background: linear-gradient(120deg, var(--primary), var(--primary-dark));
            padding: 2rem;
            text-align: center;
            color: white;
        }
        
        .auth-header h1 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        
        .auth-header p {
            font-size: 0.9rem;
            opacity: 0.9;
        }
        
        .auth-body {
            padding: 2rem;
        }
        
        .form-group {
            margin-bottom: 1.5rem;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            font-size: 0.9rem;
        }
        
        .form-control {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid #e5e7eb;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }
        
        .password-toggle {
            position: relative;
        }
        
        .password-toggle input {
            padding-right: 3rem;
        }
        
        .toggle-password {
            position: absolute;
            right: 1rem;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--gray);
            cursor: pointer;
        }
        
        .remember-forgot {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
            font-size: 0.9rem;
        }
        
        .remember {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .remember input {
            width: auto;
        }
        
        .forgot-password {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }
        
        .forgot-password:hover {
            text-decoration: underline;
        }
        
        .btn {
            display: block;
            width: 100%;
            padding: 0.75rem 1rem;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        
        .btn-primary {
            background-color: var(--primary);
            color: white;
        }
        
        .btn-primary:hover {
            background-color: var(--primary-dark);
        }
        
        .btn-google {
            background-color: white;
            color: var(--dark);
            border: 1px solid #e5e7eb;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            margin-top: 1rem;
        }
        
        .btn-google:hover {
            background-color: #f9fafb;
        }
        
        .auth-footer {
            text-align: center;
            margin-top: 1.5rem;
            font-size: 0.9rem;
        }
        
        .auth-footer a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }
        
        .auth-footer a:hover {
            text-decoration: underline;
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            .auth-card {
                max-width: 100%;
            }
            
            .remember-forgot {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }
        }
        
        /* Animation */
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .auth-card {
            animation: fadeIn 0.5s ease-out;
        }
        
        /* Form Validation */
        .error-message {
            color: var(--error);
            font-size: 0.8rem;
            margin-top: 0.25rem;
        }
        
        .form-control.error {
            border-color: var(--error);
        }
        
        .form-control.success {
            border-color: var(--success);
        }
        
        .alert {
            padding: 0.75rem 1rem;
            margin-bottom: 1rem;
            border-radius: 8px;
            font-size: 0.9rem;
        }
        
        .alert-error {
            background-color: #fee2e2;
            color: var(--error);
            border: 1px solid #fecaca;
        }
        
        .alert-success {
            background-color: #d1fae5;
            color: var(--success);
            border: 1px solid #a7f3d0;
        }