.vb-app {
    --vb-blue: #1c56d6;
    --vb-blue-dark: #123f9e;
    --vb-blue-soft: rgba(28,86,214,0.08);
    --vb-bg: #f6f8fb;
    --vb-panel: #ffffff;
    --vb-border: #e3e8f0;
    --vb-text: #1b2430;
    --vb-text-dim: #5b6472;
    --vb-text-faint: #94a0b2;
    --vb-radius: 10px;
    --vb-shadow: 0 2px 10px rgba(20,30,50,0.06);
    --vb-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    --vb-font-ar: "Segoe UI", Tahoma, Arial, sans-serif;

    all: initial;
    display: block;
    box-sizing: border-box;
    font-family: var(--vb-font);
    color: var(--vb-text);
    background: var(--vb-bg);
    border: 1px solid var(--vb-border);
    border-radius: 14px;
    padding: 22px;
    max-width: 1180px;
    margin: 0 auto;
    line-height: 1.5;
}

.vb-app *, .vb-app *::before, .vb-app *::after {
    box-sizing: border-box;
    font-family: inherit;
}

.vb-hero {
    margin-bottom: 16px;
}
.vb-hero h1 {
    font-size: 19px;
    font-weight: 750;
    line-height: 1.35;
    color: var(--vb-text);
    margin: 0;
    max-width: 640px;
}

.vb-usage-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--vb-text-dim);
    background: var(--vb-panel);
    border: 1px solid var(--vb-border);
    border-radius: 999px;
    padding: 7px 14px;
    width: fit-content;
    margin-bottom: 18px;
}
.vb-usage-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #2fbf71;
    flex-shrink: 0;
}
.vb-usage-bar.vb-limit-reached .vb-usage-dot { background: #e2603a; }

.vb-grid {
    display: grid;
    grid-template-columns: minmax(280px, 380px) 1fr;
    gap: 20px;
    align-items: start;
}

.vb-panel {
    background: var(--vb-panel);
    border: 1px solid var(--vb-border);
    border-radius: var(--vb-radius);
    box-shadow: var(--vb-shadow);
    overflow: hidden;
}

.vb-panel-head {
    padding: 14px 18px;
    border-bottom: 1px solid var(--vb-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.vb-panel-head h2 {
    font-size: 13px;
    font-weight: 700;
    margin: 0;
    color: var(--vb-text);
}
.vb-tag {
    font-size: 10px;
    letter-spacing: 0.6px;
    color: var(--vb-text-faint);
    font-weight: 600;
}

.vb-panel-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.vb-panel-input.vb-rtl-form {
    direction: rtl;
    text-align: right;
}
.vb-panel-input.vb-rtl-form label,
.vb-panel-input.vb-rtl-form .vb-note {
    text-align: right;
}
.vb-panel-input.vb-rtl-form input[type="text"],
.vb-panel-input.vb-rtl-form select {
    direction: rtl;
    text-align: right;
}
.vb-panel-input.vb-rtl-form .vb-consent-label {
    flex-direction: row-reverse;
}

.vb-field label {
    display: block;
    font-size: 11px;
    font-weight: 650;
    color: var(--vb-text-dim);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.vb-optional-tag {
    text-transform: none;
    font-weight: 500;
    color: var(--vb-text-faint);
    letter-spacing: 0;
    font-size: 10.5px;
}

.vb-field-primary textarea {
    min-height: 220px;
    border-width: 1.5px;
    border-color: var(--vb-blue);
    box-shadow: 0 0 0 3px var(--vb-blue-soft);
}
.vb-field-primary label {
    font-size: 12.5px;
    color: var(--vb-blue);
}

.vb-app select,
.vb-app input[type="text"],
.vb-app textarea {
    width: 100%;
    background: #fbfcfe;
    border: 1px solid var(--vb-border);
    border-radius: 7px;
    color: var(--vb-text);
    font-size: 13.5px;
    padding: 10px 12px;
    outline: none;
}
.vb-app select:focus,
.vb-app input[type="text"]:focus,
.vb-app textarea:focus {
    border-color: var(--vb-blue);
    box-shadow: 0 0 0 3px var(--vb-blue-soft);
}

.vb-app textarea {
    resize: vertical;
    min-height: 160px;
    line-height: 1.8;
    font-size: 14.5px;
    font-family: var(--vb-font);
}
.vb-app textarea[dir="rtl"] {
    font-family: var(--vb-font-ar);
}

.vb-note {
    font-size: 10.5px;
    color: var(--vb-text-faint);
    margin-top: 6px;
}

.vb-draft-btn {
    width: 100%;
    background: var(--vb-blue);
    color: #fff;
    border: none;
    border-radius: 7px;
    padding: 12px 16px;
    font-size: 13.5px;
    font-weight: 650;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.vb-draft-btn:hover { background: var(--vb-blue-dark); }
.vb-draft-btn:disabled { background: #9db3e0; cursor: progress; }

.vb-error {
    font-size: 12px;
    color: #b3311c;
    background: #fdecea;
    border: 1px solid #f5c2ba;
    border-radius: 7px;
    padding: 10px 12px;
}

.vb-panel-output {
    display: flex;
    flex-direction: column;
    min-height: 520px;
}

.vb-tabs {
    display: flex;
    border-bottom: 1px solid var(--vb-border);
    background: #fafbfd;
}
.vb-output-title {
    flex: 1;
    color: var(--vb-text);
    font-size: 12.5px;
    font-weight: 650;
    padding: 13px 14px;
}

.vb-label-ar {
    font-weight: 500;
    color: var(--vb-text-faint);
    text-transform: none;
    letter-spacing: 0;
    font-size: 11px;
}

.vb-lang-toggle {
    display: flex;
    gap: 6px;
}
.vb-lang-btn {
    flex: 1;
    background: #fbfcfe;
    border: 1.5px solid var(--vb-border);
    border-radius: 7px;
    padding: 8px 10px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--vb-text-dim);
    cursor: pointer;
    transition: background .12s ease, border-color .12s ease, color .12s ease;
}
.vb-lang-btn:hover {
    border-color: var(--vb-blue);
}
.vb-lang-btn:focus-visible {
    outline: 2px solid var(--vb-blue);
    outline-offset: 2px;
}
.vb-lang-btn.active {
    background: var(--vb-blue);
    border-color: var(--vb-blue);
    color: #fff;
}

.vb-output-body {
    position: relative;
    flex: 1;
    padding: 22px;
}

.vb-empty, .vb-loading {
    height: 100%;
    min-height: 420px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-align: center;
    color: var(--vb-text-faint);
    padding: 24px;
}
.vb-loading { display: none; }
.vb-loading.show { display: flex; }
.vb-empty.hide { display: none; }

.vb-empty h3 {
    font-size: 13.5px;
    color: var(--vb-text-dim);
    margin: 0;
}
.vb-empty p {
    font-size: 12px;
    max-width: 320px;
    margin: 0 0 6px 0;
    line-height: 1.6;
}

.vb-example {
    width: 100%;
    max-width: 420px;
    background: #fafbfd;
    border: 1px solid var(--vb-border);
    border-radius: 8px;
    padding: 14px 16px;
    text-align: left;
}
.vb-example.vb-rtl {
    text-align: right;
}
.vb-example-text {
    flex: 1;
    color: var(--vb-text-dim);
    text-align: left;
}
.vb-example.vb-rtl .vb-example-text {
    text-align: right;
}
.vb-example-badge {
    font-size: 9.5px;
    font-weight: 700;
    letter-spacing: 0.6px;
    color: var(--vb-blue);
    margin-bottom: 10px;
}
.vb-example-rows {
    display: flex;
    flex-direction: column;
    gap: 9px;
}
.vb-example-row {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 11.5px;
    line-height: 1.5;
}
.vb-example-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    margin-top: 5px;
    flex-shrink: 0;
}
.vb-example-dot-ok { background: #2fbf71; }
.vb-example-dot-warn { background: #e2a13a; }
.vb-example-dot-info { background: var(--vb-blue); }
.vb-example-status {
    font-size: 9.5px;
    font-weight: 650;
    white-space: nowrap;
    padding: 2px 7px;
    border-radius: 999px;
}
.vb-example-status-ok { background: #e5f7ee; color: #1a8a52; }
.vb-example-status-warn { background: #fdf3e3; color: #a8720f; }
.vb-example-status-info { background: var(--vb-blue-soft); color: var(--vb-blue); }

.vb-results-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}
.vb-download-note {
    font-size: 10.5px;
    color: var(--vb-text-faint);
    font-style: italic;
    margin-top: -6px;
}

.vb-footer-bar {
    display: flex;
    justify-content: center;
    margin-top: 18px;
}
.vb-feedback-link {
    font-size: 11.5px;
    color: var(--vb-text-faint);
    text-decoration: none;
}
.vb-feedback-link:hover {
    color: var(--vb-blue);
    text-decoration: underline;
}

.vb-ring {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 3px solid var(--vb-border);
    border-top-color: var(--vb-blue);
    animation: vb-spin 0.8s linear infinite;
}
@keyframes vb-spin { to { transform: rotate(360deg); } }
.vb-loading-text {
    font-size: 12px;
    color: var(--vb-text-dim);
}

.vb-results { display: none; flex-direction: column; gap: 16px; }
.vb-results.show { display: flex; }

.vb-meta-row { display: flex; gap: 8px; flex-wrap: wrap; }
.vb-meta-row .vb-chip {
    font-size: 10.5px;
    padding: 5px 10px;
    border-radius: 999px;
    border: 1px solid var(--vb-border);
    background: #fafbfd;
    color: var(--vb-text-dim);
}
.vb-meta-row .vb-chip b { color: var(--vb-text); }

.vb-doc {
    font-size: 13.8px;
    line-height: 1.85;
    color: var(--vb-text);
    white-space: pre-wrap;
}
.vb-doc.vb-rtl {
    direction: rtl;
    text-align: right;
    font-family: var(--vb-font-ar);
}


.vb-consent-row {
    font-size: 12px;
    color: var(--vb-text-dim);
    line-height: 1.5;
}
.vb-consent-label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    cursor: pointer;
}
.vb-consent-label input[type="checkbox"] {
    width: auto;
    margin-top: 2px;
    flex-shrink: 0;
    accent-color: var(--vb-blue);
}
.vb-consent-label a {
    color: var(--vb-blue);
    text-decoration: underline;
}

.vb-signin-note {
    font-size: 12px;
    color: var(--vb-text-dim);
    text-align: center;
    line-height: 1.6;
}
.vb-signin-note a {
    color: var(--vb-blue);
    font-weight: 650;
    text-decoration: none;
}
.vb-signin-note a:hover {
    text-decoration: underline;
}

.vb-upload-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
}
.vb-upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--vb-blue);
    background: var(--vb-blue-soft);
    border: 1px solid var(--vb-blue);
    border-radius: 6px;
    padding: 7px 12px;
    cursor: pointer;
}
.vb-upload-btn:hover {
    background: var(--vb-blue);
    color: #fff;
}
.vb-upload-status {
    font-size: 11px;
    color: var(--vb-text-faint);
}

.vb-results-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
.vb-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 650;
    color: #fff;
    background: var(--vb-blue);
    border: none;
    border-radius: 6px;
    padding: 8px 14px;
    cursor: pointer;
    white-space: nowrap;
}
.vb-download-btn:hover {
    background: var(--vb-blue-dark);
}
.vb-download-btn:disabled {
    background: #9db3e0;
    cursor: progress;
}

.vb-gate {
    text-align: center;
    padding: 50px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}
.vb-gate-icon { font-size: 26px; }
.vb-gate h3 { margin: 0; font-size: 15px; }
.vb-gate p { margin: 0; color: var(--vb-text-dim); font-size: 13px; max-width: 360px; }
.vb-gate-actions { display: flex; gap: 10px; margin-top: 10px; }

.vb-btn {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 7px;
    font-size: 12.5px;
    font-weight: 650;
    text-decoration: none;
    cursor: pointer;
}
.vb-btn-primary { background: var(--vb-blue); color: #fff; }
.vb-btn-primary:hover { background: var(--vb-blue-dark); }
.vb-btn-secondary { background: #fff; color: var(--vb-blue); border: 1px solid var(--vb-blue); }
.vb-btn-secondary:hover { background: var(--vb-blue-soft); }

@media (max-width: 860px) {
    .vb-app { padding: 14px; border-radius: 10px; }
    .vb-hero h1 { font-size: 16px; }
    .vb-grid { grid-template-columns: 1fr; }
    .vb-panel-output { min-height: 0; }
    .vb-output-body { padding: 16px; }
    .vb-empty, .vb-loading { min-height: 280px; }
}

@media (max-width: 480px) {
    .vb-lang-btn { font-size: 11px; padding: 9px 6px; }
    .vb-gate-actions { flex-direction: column; width: 100%; }
    .vb-btn { width: 100%; text-align: center; }
}