* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        :root {
            --primary: #2f66fc;
            --primary-dark: #1029b8;
            --secondary: #ff6584;
            --light: #f8f9fa;
            --dark: #343a40;
            --gray: #505050;
            --success: #28a745;
            --error: #dc3545;
            --transition: all 0.3s ease;
        }

        body {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background: linear-gradient(135deg, #1029b8 0%, #2f81fc 100%);
            padding: 20px;
        }

        .container {
            position: relative;
            width: 100%;
            max-width: 900px;
            background: white;
            border-radius: 20px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
            overflow: hidden;
            display: flex;
            min-height: 550px;
        }

        .form-container {
            flex: 1;
            padding: 40px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .welcome-container {
            flex: 1;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .welcome-container::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            top: -150px;
            right: -150px;
        }

        .welcome-container::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            bottom: -100px;
            left: -100px;
        }

        .welcome-content {
            position: relative;
            z-index: 1;
        }

        .welcome-content h2 {
            font-size: 28px;
            margin-bottom: 15px;
        }

        .welcome-content p {
            margin-bottom: 30px;
            opacity: 0.9;
        }

        .toggle-btn {
            background: transparent;
            border: 2px solid white;
            color: white;
            padding: 12px 30px;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }

        .toggle-btn:hover {
            background: white;
            color: var(--primary);
        }

        .form-title {
            font-size: 32px;
            padding-bottom: 5px;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .form-subtitle {
            font-size: 18px;
            font-weight: 500;
            color: var(--gray);
            margin-bottom: 30px;
        }

        .input-group {
            position: relative;
            margin-bottom: 20px;
        }

        .input-group i {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--gray);
        }

        .input-group input {
            width: 100%;
            padding: 15px 15px 15px 45px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 16px;
            transition: var(--transition);
        }

        .input-group input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.2);
            outline: none;
        }

        .checkbox-group {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }

        .checkbox-group input {
            margin-right: 10px;
        }

        .form-btn {
            width: 100%;
            padding: 15px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            margin-bottom: 20px;
        }

        .form-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(108, 99, 255, 0.3);
        }

        .form-footer {
            text-align: center;
            color: var(--gray);
            font-size: 14px;
        }

        .form-footer a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
        }

        .password-toggle {
            position: absolute;
            right: 50px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: var(--gray);
        }

        /* Animações para troca de formulários */
        .login-form {
            display: block;
        }

        /* Exibe o formulário de cadastro normalmente quando não há login-form */
        .signup-form {
            display: block;
        }

        /* Se houver login-form e signup-form juntos, esconde o signup-form (caso index.html antigo) */
        .login-form ~ .signup-form {
            display: none;
        }

        /* Efeitos de validação */
        .input-group.error input {
            border-color: var(--error);
        }

        .input-group.success input {
            border-color: var(--success);
        }

        .error-message {
            color: var(--error);
            font-size: 12px;
            margin-top: 5px;
            display: none;
        }

        .success-message {
            background: var(--success);
            color: white;
            padding: 10px;
            border-radius: 8px;
            text-align: center;
            margin-bottom: 20px;
            display: none;
        }

        /* Responsividade */
        @media (max-width: 768px) {
            .container {
                flex-direction: column;
                max-width: 450px;
            }
            
            .welcome-container {
                padding: 30px 20px;
            }
            
            .form-container {
                padding: 30px 20px;
            }
        }