.fft-sizer-bare {
    font-family: Arial, Helvetica, sans-serif;
}

.fft-form {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.fft-field {
    display: flex;
    align-items: center;
    gap: 30px;
}

.fft-field label {
    width: 230px;
    text-align: right;
    font-size: 15px;
    color: #000;
    white-space: nowrap;
}

.fft-field input,
.fft-field select {
    flex: 1;
    max-width: 280px;
    padding: 5px 8px;
    font-size: 15px;
    border: 1px solid #000;
    border-radius: 0;
    box-sizing: border-box;
}

#calculate-btn {
    background: #1976d2;
    color: white;
    border: none;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: bold;
    border-radius: 0;
    cursor: pointer;
    margin: 10px 0 10px;
    width: fit-content;
}

#result-box {
    border: 1px solid #000;
    border-radius: 0;
    padding: 2px 10px;
    margin: 6px 0 8px;
    font-family: monospace;
    font-size: 14px;
    white-space: pre-wrap;
    line-height: 1.15;
    min-height: 0;
}

#result-text {
    margin: 0 !important;
    padding: 0 !important;
}

#result-text.green { color: #006400; }
#result-text.red   { color: #8B0000; }

#copy-btn {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 6px 14px;
    font-size: 13px;
    border-radius: 0;
    cursor: pointer;
    width: fit-content;
    margin-top: 6px;
}

/* Mobile */
@media (max-width: 600px) {
    .fft-field {
        flex-direction: column;
        align-items: stretch;
        gap: 3px;
    }
    .fft-field label {
        width: 100%;
        text-align: left;
    }
    .fft-field input,
    .fft-field select {
        max-width: 100%;
    }
}