.qr-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.85fr);
  gap: var(--space-5);
  align-items: start;
}

.qr-hero__content {
  margin-bottom: 0;
}

.qr-hero__aside,
.qr-form-card,
.qr-preview-card {
  height: 100%;
}

.qr-tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.9fr);
  gap: var(--space-5);
  align-items: start;
}

.section-heading--tight {
  margin-bottom: var(--space-5);
}

.qr-form textarea {
  min-height: 10rem;
  resize: vertical;
}

.qr-logo-field {
  display: grid;
  gap: 0.85rem;
}

.qr-logo-field input[type="file"] {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px dashed rgba(0, 87, 168, 0.24);
  border-radius: 1rem;
  background: linear-gradient(180deg, rgba(250, 252, 255, 0.96), rgba(244, 249, 252, 0.94));
  color: var(--color-text-base);
}

.qr-logo-preview {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(0, 87, 168, 0.12);
  border-radius: 1rem;
  background: rgba(248, 251, 254, 0.9);
}

.qr-logo-preview__content {
  display: grid;
  gap: 0.7rem;
  min-width: 0;
  flex: 1;
}

.qr-logo-preview__frame {
  position: relative;
  display: grid;
  place-items: center;
  width: 4.5rem;
  height: 4.5rem;
  flex-shrink: 0;
  border-radius: 1rem;
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(12, 32, 58, 0.08);
  overflow: hidden;
}

.qr-logo-preview__placeholder {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  padding: 0.55rem;
  color: var(--color-text-faint);
  font-size: 0.72rem;
  line-height: 1.35;
  text-align: center;
  background:
    linear-gradient(180deg, rgba(250, 252, 255, 0.98), rgba(240, 246, 251, 0.96)),
    radial-gradient(circle at top, rgba(0, 87, 168, 0.08), transparent 58%);
}

.qr-logo-preview__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qr-logo-preview--empty .qr-logo-option,
.qr-logo-preview--empty .qr-logo-actions {
  opacity: 0.72;
}

.qr-logo-preview__meta {
  margin: 0;
  word-break: break-word;
}

.qr-logo-option {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--color-text-soft);
  font-size: 0.94rem;
}

.qr-logo-option input {
  width: 1rem;
  height: 1rem;
  margin: 0;
}

.qr-logo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.qr-logo-actions .button {
  min-width: auto;
}

.qr-logo-field input[type="file"]:disabled,
.qr-logo-option input:disabled,
.qr-logo-actions .button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.qr-logo-feedback {
  min-height: 1.25rem;
}

.qr-form textarea[aria-invalid="true"] {
  border-color: rgba(163, 59, 44, 0.45);
  box-shadow: 0 0 0 4px rgba(163, 59, 44, 0.08);
}

.form-note {
  margin-bottom: 0;
  color: var(--color-text-faint);
  font-size: 0.94rem;
}

.qr-inline-status {
  min-height: 1.5rem;
}

.form-feedback {
  min-height: 1.5rem;
  margin: 0;
  color: #a33b2c;
  font-size: 0.95rem;
  font-weight: 600;
}

.field textarea.is-invalid {
  border-color: rgba(163, 59, 44, 0.45);
  box-shadow: 0 0 0 4px rgba(163, 59, 44, 0.08);
}

.qr-form .button:disabled,
.qr-download-actions .button:disabled {
  cursor: not-allowed;
  transform: none;
  opacity: 0.58;
  box-shadow: none;
}

.qr-form .button:disabled:hover,
.qr-download-actions .button:disabled:hover {
  transform: none;
}

.qr-preview-shell {
  display: grid;
  gap: var(--space-4);
}

.qr-preview-placeholder,
.qr-preview-frame {
  min-height: 19rem;
  border: 1px dashed rgba(0, 87, 168, 0.2);
  border-radius: 1.4rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 249, 252, 0.94)),
    radial-gradient(circle at top, rgba(0, 87, 168, 0.08), transparent 45%);
}

.qr-preview-placeholder {
  display: grid;
  place-items: center;
  padding: var(--space-5);
  color: var(--color-text-soft);
  text-align: center;
}

.qr-preview-stage {
  display: grid;
  gap: var(--space-4);
}

.qr-preview-frame {
  position: relative;
  display: grid;
  place-items: center;
  padding: var(--space-5);
  overflow: hidden;
}

.qr-preview-canvas {
  display: grid;
  place-items: center;
  width: min(100%, 17rem);
  min-height: 17rem;
  padding: 1rem;
  border-radius: 1.2rem;
  background: #ffffff;
  box-shadow: 0 16px 36px rgba(17, 46, 77, 0.08);
}

.qr-preview-canvas svg {
  display: block;
  width: 100%;
  height: auto;
}

.qr-preview-caption {
  margin: 0;
  color: var(--color-text-soft);
  text-align: center;
  word-break: break-word;
}

.qr-preview-note {
  text-align: center;
}

.qr-download-actions {
  margin-top: var(--space-4);
}

.qr-download-feedback {
  color: #166947;
}

@media (max-width: 900px) {
  .qr-hero-grid,
  .qr-tool-layout {
    grid-template-columns: 1fr;
  }

  .qr-logo-preview {
    align-items: flex-start;
    flex-direction: column;
  }
}