body[data-tool="vietqr"] .tool-workspace {
  padding: 0 0 2rem !important;
  background:
    radial-gradient(ellipse 70% 45% at 100% 0%, rgba(6, 182, 212, 0.1), transparent 50%),
    #f8f7ff !important;
}

.vqr-page {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.vqr-intro {
  text-align: center;
  max-width: 36rem;
  margin: 0 auto 1.35rem;
}

.vqr-intro h1 {
  margin: 0;
  font-size: clamp(1.65rem, 3vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.vqr-intro p {
  margin: 0.5rem 0 0;
  color: var(--text-muted);
  line-height: 1.6;
}

.vqr-card {
  background: #fff;
  border: 1px solid rgba(124, 58, 237, 0.12);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.05);
}

.vqr-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
}

.vqr-form { padding: 1.25rem 1.35rem; border-right: 1px solid rgba(124, 58, 237, 0.1); }

.vqr-label {
  display: block;
  margin: 0.85rem 0 0.4rem;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.vqr-label:first-child { margin-top: 0; }

.vqr-form input, .vqr-form select, .vqr-form textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid rgba(124, 58, 237, 0.14);
  border-radius: 12px;
  font: inherit;
  background: #fafafa;
}

.vqr-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.vqr-preview {
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #faf8ff, #f3fbff);
}

.vqr-empty {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.vqr-preview img {
  width: 100%;
  max-width: 260px;
  border-radius: 12px;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.1);
}

.vqr-status { margin: 0.85rem 0 0; font-size: 0.85rem; color: var(--text-muted); text-align: center; }
.vqr-status.is-ok { color: #047857; }
.vqr-status.is-err { color: #b91c1c; }

.vqr-payload {
  margin-top: 0.75rem;
  width: 100%;
  font: 11px ui-monospace, Consolas, monospace;
  color: #6b6578;
  background: transparent;
  border: 0;
  resize: none;
}

@media (max-width: 800px) {
  .vqr-page { padding: 0 1rem; }
  .vqr-grid { grid-template-columns: 1fr; }
  .vqr-form { border-right: 0; border-bottom: 1px solid rgba(124, 58, 237, 0.1); }
}