/* Form Elements */
label {
    margin-bottom: 0.5rem;
}
input[type="number"], select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    background-color: var(--secondary-background);
}
input:focus, select:focus {
    outline: none;
    border-color: var(--main-color);
    box-shadow: 0 0 0 3px rgba(26, 72, 238, 0.4);
}
.card>.grid-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    align-items: end;
}
#swap {
    padding: 0.75rem;
    background-color: var(--main-color);
    color: var(--color-white);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: auto;
}
#swap:hover {
    background-color: var(--secondary-color);
    transform: scale(1.1);
}
#result {
    padding: 0.75rem;
    background-color: var(--secondary-background);
    border: 1px solid #ccc;
    border-radius: 4px;
    min-height: 44px; /* Match input height */
    font-size: 1rem;
    font-weight: bold;
    color: var(--main-color);
    word-wrap: break-word;
    width: 100%;
}

/* Explanation and Steps */
#calculation-steps, #explanation {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--secondary-background);
    border-radius: 4px;
}
code {
    font-family: monospace;
    background-color: #e2e8f0;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
}
@media (min-width: 768px) {
    .card>.grid-container {
        grid-template-columns: 1fr auto 1fr;
    }
    .category-selector {
        grid-column: 1 / -1;
    }
}