@media (max-width: 1024px) {
    .app-grid {
        grid-template-columns: 1fr;
    }
    
    .input-section {
        order: 1;
    }
    
    .result-section {
        order: 2;
    }
}

@media (max-width: 768px) {
    .header-contact {
        display: none;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .card {
        padding: 24px;
    }
    
    .btn {
        padding: 12px 20px;
    }
    
    .result-content {
        padding: 16px;
    }
    
    #toast-container {
        top: auto;
        bottom: 24px;
        right: 50%;
        transform: translateX(50%);
        width: calc(100% - 48px);
        align-items: center;
    }
    
    .toast {
        min-width: unset;
        width: 100%;
        transform: translateY(120%);
    }
    
    .toast.show {
        transform: translateY(0);
    }
    
    .toast.hide {
        transform: translateY(120%);
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 1.1rem;
    }
    
    .action-buttons {
        gap: 12px;
    }
    
    .card {
        padding: 20px;
    }
    
    .result-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .result-value {
        align-self: flex-end;
    }
}