#app {
    max-width: 1180px;
    margin: 14px auto;
    background: #fff;
    border: 1px solid #dfe0e3;
    border-radius: 10px;
    padding: 0 18px 18px;
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: #f1f4f8;
    color: #2f343a;
}

/* Fallback styling when Bitrix UI library is unavailable. */
.ui-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    background: #0f8bd6;
    padding: 8px 8px 0;
    border-radius: 0 0 4px 4px;
}

.ui-nav .ui-nav-item {
    text-decoration: none;
    color: #eaf6ff;
    padding: 10px 16px;
    border-radius: 6px 6px 0 0;
    background: rgba(255, 255, 255, 0.12);
    font-weight: 500;
}

.ui-nav .ui-nav-item.ui-nav-item-active {
    color: #0f8bd6;
    background: #fff;
}

.ui-btn {
    border: 1px solid transparent;
    border-radius: 4px;
    padding: 8px 14px;
    line-height: 1.2;
    cursor: pointer;
    background: #edf2f6;
}

.ui-btn-primary {
    background: #2f9cf3;
    color: #fff;
}

.ui-btn-success {
    background: #2fc06e;
    color: #fff;
}

.ui-btn-light-border {
    background: #fff;
    border-color: #c9d0d7;
    color: #2f343a;
}

.ui-ctl {
    border: 1px solid #d5dbe1;
    border-radius: 4px;
    background: #fff;
}

.ui-ctl-element {
    width: 100%;
    min-height: 36px;
    border: 0;
    outline: 0;
    box-sizing: border-box;
    padding: 6px 10px;
    font-size: 15px;
    background: transparent;
}

.ui-step {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 12px 0 20px;
}

.ui-step-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #a8b0b8;
    flex: 1;
}

.ui-step-number {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 1px solid #cfd6dd;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    background: #fff;
}

.ui-step-item-active .ui-step-number {
    border-color: #2f9cf3;
    background: #2f9cf3;
    color: #fff;
}

.ui-step-item-success .ui-step-number {
    border-color: #2fc06e;
    color: #2fc06e;
}

.app-top-nav {
    margin-bottom: 16px;
}

.tab-hidden {
    display: none;
}

.app-stepper {
    display: flex;
    margin-bottom: 18px;
}

.step-content {
    padding: 8px 0;
}

.step-hidden {
    display: none;
}

.nip-search-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.hint-text {
    margin-top: 12px;
    color: var(--ui-color-text-secondary, #828b95);
    font-size: 16px;
    line-height: 1.45;
}

.section-title {
    margin: 0 0 12px;
}

.result-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 16px;
}

.result-form,
.vat-box-wrapper,
.license-box,
.success-box {
    padding: 16px;
    border: 1px solid var(--ui-color-base-30, #dfe0e3);
    border-radius: 10px;
    background: #fff;
}

.result-form {
    padding: 20px;
}

.readonly-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.readonly-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.readonly-label {
    font-size: 14px;
    color: var(--ui-color-text-secondary, #828b95);
}

.readonly-value {
    min-height: 38px;
    border: 1px solid var(--ui-color-base-30, #dfe0e3);
    border-radius: 8px;
    padding: 7px 10px;
    background: var(--ui-color-base-02, #f7f8f9);
}

.vat-status-box {
    min-height: 280px;
    border-radius: 10px;
    padding: 16px;
    border: 1px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-weight: 500;
    font-size: 34px;
    line-height: 1.35;
}

.vat-status-active {
    color: #0f7b43;
    border-color: #3bcf8e;
    background: #e8fff3;
}

.vat-status-inactive {
    color: #ab2538;
    border-color: #ef6a7b;
    background: #ffeef1;
}

.vat-status-unknown {
    color: #5f6c79;
    border-color: #c5ccd3;
    background: #f5f7f9;
}

.actions-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 16px;
    justify-content: flex-end;
}

.warning-box {
    margin-top: 10px;
    padding: 10px;
    border-radius: 8px;
    color: #8f5a00;
    border: 1px solid #f5c96c;
    background: #fff8e8;
}

.mapping-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 14px;
    margin-top: 12px;
}

.map-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

@media (max-width: 900px) {
    .result-layout,
    .mapping-container,
    .readonly-grid {
        grid-template-columns: 1fr;
    }

    .vat-status-box {
        min-height: 200px;
        font-size: 24px;
    }
}