.qr-layout { margin-top: 24px; }
.qr-controls { display: flex; flex-direction: column; gap: 24px; }

@media(min-width: 900px) {
  .qr-layout { display: grid; grid-template-columns: 1fr 340px; gap: 40px; align-items: start; }
  .qr-preview-sticky { position: sticky; top: 24px; }
}

.control-section {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}
.section-title i { opacity: 0.6; }

.type-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.type-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.type-tab:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.type-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.qr-preview-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
#qr-canvas {
  width: 100%;
  aspect-ratio: 1/1;
  background: #fff;
  border-radius: var(--radius-md);
  display: flex;
  overflow: hidden;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
#qr-canvas > div {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
#qr-canvas svg, #qr-canvas canvas {
  width: 100% !important;
  height: 100% !important;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}
.qr-export-actions { margin-top: 24px; }
.btn-group { display: flex; gap: 8px; }

.is-hidden { display: none !important; }

.qr-checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.qr-checkbox-row label { margin: 0; cursor: pointer; }

.qr-grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}
.qr-col-full { grid-column: 1 / -1; }

.qr-grid-design {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.qr-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.qr-color-row { display: flex; gap: 8px; }
.qr-color-swatch {
  flex: 0 0 42px;
  padding: 4px;
  height: 42px;
  cursor: pointer;
}
.qr-color-text { flex: 1; }

.qr-logo-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}
.qr-logo-file { padding: 8px; }

.qr-preview-wrapper { height: fit-content; }

#qr-placeholder {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  font-size: 0.9rem;
}

.btn-group--full { width: 100%; }
.btn-group--full .btn { flex: 1; }

.qr-copy-btn {
  width: 100%;
  margin-top: 8px;
}

.qr-info-list {
  margin-top: 8px;
  margin-bottom: 24px;
  padding-left: 20px;
}
.qr-tool-info { margin-top: 48px; }