.sng-volumetric-container {
    max-width: 700px;
    margin: auto;
    font-family: Arial, sans-serif;
}

#sng_volumetric_form {
    background: #ffffff;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .08);
    border: 1px solid #eee;

    display: flex;
    flex-direction: column;
    gap: 14px;
}

.sng-volumetric-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sng-volumetric-label {
    font-size: 13px;
    font-weight: bold;
    color: #374151;
}

#sng_volumetric_form input {
    width: 100%;
    height: 48px;
    border: 1px solid #d1d5db;
    border-radius: 12px;
    padding: 0 16px;
    font-size: 14px;
    outline: none;
    transition: .2s;
    box-sizing: border-box;
}

#sng_volumetric_form input:focus {
    border-color: #0256b9;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}

#sng_volumetric_form input::placeholder {
    color: #9ca3af;
}

#sng_volumetric_form_submitBtn {
    position: relative;
    height: 50px;
    border: 0;
    border-radius: 12px;
    background: #0256b9;
    color: white;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
    transition: .2s;

    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

#sng_volumetric_form_submitBtn:hover {
    background: #0256b9;
}

#sng_volumetric_form_submitBtn:disabled {
    opacity: .7;
    cursor: not-allowed;
}

.sng-volumetric-btn-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, .4);
    border-top-color: #fff;
    border-radius: 50%;
    display: none;
    animation: sng-volumetric-spin .7s linear infinite;
}

#sng_volumetric_form_submitBtn.loading .sng-volumetric-btn-spinner {
    display: inline-block;
}

@keyframes sng-volumetric-spin {
    to {
        transform: rotate(360deg);
    }
}

#sng_volumetric_alert {
    display: none;
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 14px;
    line-height: 1.5;
}

#sng_volumetric_result {
    display: block;
    margin-top: 18px;
}


.sng-volumetric-btn-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top: 2px solid #fff;
    border-radius: 50%;
    display: none;
    animation: sng-volumetric-sng-spin 0.7s linear infinite;

    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -8px;
    margin-left: -8px;
}

.sng-volumetric-loading .sng-volumetric-btn-text {
    visibility: hidden;
}

.sng-volumetric-loading .sng-volumetric-btn-spinner {
    display: block;
}

@keyframes sng-volumetric-sng-spin {
    100% {
        transform: rotate(360deg);
    }
}

.sng-volumetric-card {
    background: #fff;
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border: 1px solid #eee;
}

.sng-volumetric-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #222;
}

.sng-volumetric-table {
    width: 100%;
    border-collapse: collapse;
}

.sng-volumetric-table tr:not(:last-child) {
    border-bottom: 1px solid #f1f1f1;
}

.sng-volumetric-table td {
    vertical-align: middle;
}

.sng-volumetric-label {
    color: #666;
    font-size: 14px;
    white-space: nowrap;
}

.sng-volumetric-separator {
    width: 30px;
    padding: 0 20px;
    text-align: center;
    color: #999;
}

.sng-volumetric-rp {
    width: 30px;
    color: #444;
}

.sng-volumetric-value {
    text-align: right;
    font-weight: 600;
    width: 100%;
}

.sng-volumetric-unit {
    width: 40px;
    padding-left: 8px;
    color: #666;
    white-space: nowrap;
}


@media(max-width:600px) {
    .sng-volumetric-card {
        padding: 14px;
        border-radius: 12px;
    }

    .sng-volumetric-table td {
        font-size: 13px;
    }

    .sng-volumetric-title {
        font-size: 16px;
    }

    .sng-volumetric-separator {
        padding: 0 2px;
    }
}

.sng-volumetric-action {
    display: flex;
    gap: 10px;
    align-items: center;
}

#sng_volumetric_form_submitBtn {
    flex: 1;
}

#sng_volumetric_resetBtn {
    height: 44px;
    padding: 0 14px;
    border: 1px solid #ddd;
    background: #fff;
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
    transition: 0.2s;
}

#sng_volumetric_resetBtn:hover {
    background: #f5f5f5;
}