.input-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #2c3e50;
    font-size: 14px;
}

input[type="text"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

textarea {
    resize: vertical;
    min-height: 80px;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.unit-conversion {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 15px;
}

.unit-conversion select {
    flex: 1;
}

.unit-conversion input {
    flex: 2;
}

@media (max-width: 600px) {
    .unit-conversion {
        flex-direction: column;
        align-items: stretch;
    }

    .swap-button {
        align-self: center;
        margin: 8px 0;
    }

    .unit-conversion input,
    .unit-conversion select {
        flex: none;
    }
}