@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results {
    display: none;
    background: linear-gradient(to right, #667eea, #764ba2);
    color: white;
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.results h3 {
    font-size: 1.3em;
    margin-bottom: 15px;
    font-weight: 600;
}

.result-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.result-item:last-child {
    border-bottom: none;
    font-size: 1.2em;
    font-weight: 600;
    margin-top: 10px;
    padding-top: 15px;
    border-top: 2px solid rgba(255, 255, 255, 0.5);
}

.error {
    color: #e74c3c;
    font-size: 0.9em;
    margin-top: 5px;
    display: none;
}

.currency {
    color: #888;
    font-size: 0.9em;
    margin-left: 5px;
}

@media (max-width: 480px) {
    .calculator-container {
        padding: 25px;
        margin: 10px;
    }
    
    .calculator-header h1 {
        font-size: 1.8em;
    }
}