.qr-builder-app * {
  box-sizing: border-box;
}

.qr-builder-app {
  max-width: 1100px;
  margin: 26px auto;
  font-family: 'Inter', sans-serif;
  color: #111827;
}

.qrb-shell {
  background: #E9E9EB;
  border-radius: 8px;
  padding: 18px;
}

.qrb-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 18px;
  align-items: start;
}

.qrb-left,
.qrb-right {
  min-width: 0;
}

.qrb-types-panel,
.qrb-step-panel {
  background: #fff;
  border-radius: 8px;
  padding: 18px;
}

.qrb-left {
  display: grid;
  gap: 16px;
}

.qrb-step-title {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
}

.qrb-step-line {
  width: 4px;
  min-width: 4px;
  height: 40px;
  border-radius: 8px;
  background: #1772d0;
  margin-top: 2px;
 
}

.qrb-step-label {
  color: #1772d0;
  font-size: 11px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.qrb-step-title h3 {
  margin: 0;
  font-size: 18px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  color: #151515;
}

.qrb-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.qrb-tab {
  min-height: 40px;
  border: 1px solid transparent;
  background: #f3f4f6;
  border-radius: 6px;
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  color: #6b7280;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.qrb-tab.is-active {
  background: #fff;
  border-color: #1772d0;
  color: #1772d0;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.09);
}

.qrb-tab:hover:not(.is-active) {
  background: #e9eef8;
  color: #1772d0;
}

.qrb-tab:focus-visible {
  outline: 2px solid #1772d0;
  outline-offset: 2px;
}

.qrb-tab-panel {
  display: none;
}

.qrb-tab-panel.is-active {
  display: block;
}

.qrb-option-block h4 {
  margin: 0 0 10px;
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  color: #374151;
}

.qrb-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.qrb-chip {
  border: 1px solid #1772d0;
  background: #fff;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.qrb-chip.is-active {
  background: #1772d0;
  border-color: #1772d0;
  color: #fff;
}

.qrb-chip:hover:not(.is-active) {
  background: #e5f1fc;
}

.qrb-chip:focus-visible {
  outline: 2px solid #1772d0;
  outline-offset: 2px;
}

.qrb-color-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.qrb-color-control {
  display: grid;
  gap: 8px;
}

.qrb-color-control label {
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
}

.qrb-color-control input[type="color"] {
  width: 100%;
  min-height: 42px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: #fff;
  padding: 4px;
}

.qrb-logo-section {
  display: grid;
  gap: 18px;
}

.qrb-logo-scroll {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  max-width: 100%;
  overflow-x: visible;
  overflow-y: visible;
  padding: 3px 2px 6px;
}

.qrb-logo-scroll .qrb-logo-item {
  flex: 0 0 auto;
  width: 60px;
  height: 60px;
  border: 1px solid #d1d5db;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  cursor: pointer;
  padding: 0;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.qrb-logo-scroll .qrb-logo-item:hover {
  border-color: #93c5fd;
  background: #f8fbff;
}

.qrb-logo-scroll .qrb-logo-item.is-active {
  border-color: #6941c6;
  box-shadow: 0 0 0 2px rgba(105, 65, 198, 0.18);
}

.qrb-logo-scroll .qrb-logo-item:focus-visible {
  outline: 2px solid #6941c6;
  outline-offset: 2px;
}

.qrb-logo-scroll .qrb-logo-item img {
  width: 35px;
  height: 35px;
  display: block;
}

.qrb-logo-none {
  font-size: 20px;
  line-height: 1;
  color: #888888;
}

.qrb-logo-controls {
  display: grid;
  gap: 10px;
}

.qrb-logo-control {
  display: grid;
  gap: 6px;
}

.qrb-logo-range {
  width: 100%;
}

.qr-builder-app .qrb-logo-range[type='range'] {
  width: 100%;
  height: 6px;
  margin: 8px 0;
  background: transparent;
  accent-color: #1772d0;
  -webkit-appearance: none;
  appearance: none;
}

.qr-builder-app .qrb-logo-range[type='range']::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: #1772d0;
  transition: background-color 0.2s ease;
}

.qr-builder-app .qrb-logo-range[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  margin-top: -5px;
  border: 1px solid #9ca3af;
  border-radius: 50%;
  background: #9ca3af;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.24);
  transition: transform 0.16s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.qr-builder-app .qrb-logo-range[type='range']::-moz-range-track {
  height: 6px;
  border: 0;
  border-radius: 999px;
  background: #1772d0;
  transition: background-color 0.2s ease;
}

.qr-builder-app .qrb-logo-range[type='range']::-moz-range-progress {
  height: 6px;
  border: 0;
  border-radius: 999px;
  background: #1772d0;
}

.qr-builder-app .qrb-logo-range[type='range']::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border: 1px solid #9ca3af;
  border-radius: 50%;
  background: #9ca3af;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.24);
  transition: transform 0.16s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.qr-builder-app .qrb-logo-range[type='range']:hover::-webkit-slider-runnable-track,
.qr-builder-app .qrb-logo-range[type='range']:hover::-moz-range-track {
  background: #dbe4f0;
}

.qr-builder-app .qrb-logo-range[type='range']:hover::-webkit-slider-thumb,
.qr-builder-app .qrb-logo-range[type='range']:hover::-moz-range-thumb {
  transform: scale(1.06);
  box-shadow: 0 2px 8px rgba(23, 114, 208, 0.32);
}

.qr-builder-app .qrb-logo-range[type='range']:active::-webkit-slider-thumb,
.qr-builder-app .qrb-logo-range[type='range']:active::-moz-range-thumb {
  transform: scale(1.1);
  box-shadow: 0 0 0 4px rgba(23, 114, 208, 0.16), 0 2px 8px rgba(23, 114, 208, 0.3);
}

.qrb-logo-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #374151;
}

.qrb-upload-btn {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px dashed #1772d0;
  background: #fff;
  border-radius: 6px;
  padding: 10px 14px;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  color: #1772d0;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.qrb-upload-btn::before {
  content: '\2191';
  font-size: 16px;
  line-height: 1;
  font-weight: 400;
}

.qrb-upload-btn:hover {
  background: #e5f1fc;
}

.qrb-upload-btn:focus-visible {
  outline: 2px solid #1772d0;
  outline-offset: 2px;
}

.qrb-shape-grid {
  display: grid;
  gap: 20px;
}

#qrb-shape-controls .qrb-chip-row {
  display: inline-flex;
  flex-wrap: nowrap;
  gap: 10px;
  min-width: max-content;
  width: auto;
}

#qrb-shape-controls .qrb-shape-scroll {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  padding: 3px 2px 6px;
}

#qrb-shape-controls .qrb-chip.qrb-shape-chip {
  border: 1px solid #d1d9e3;
  background: #ffffff;
  border-radius: 10px;
  width: 80px;
  min-width: 80px;
  max-width: 80px;
  min-height: 80px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #0f172a;
  transition: border-color 0.16s ease, background-color 0.16s ease, box-shadow 0.16s ease, color 0.16s ease;
}

#qrb-shape-controls .qrb-chip.qrb-shape-chip:hover:not(.is-active):not(:disabled) {
  border-color: #a8bfd8;
  background: #f7faff;
}

#qrb-shape-controls .qrb-chip.qrb-shape-chip.is-active {
  border-color: #1772d0;
  background: #eef5ff;
  color: #1772d0;
  box-shadow: 0 0 0 1px rgba(23, 114, 208, 0.15);
}

#qrb-shape-controls .qrb-chip.qrb-shape-chip:focus-visible {
  outline: 2px solid #1772d0;
  outline-offset: 2px;
}

#qrb-shape-controls .qrb-chip.qrb-shape-chip:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.qrb-shape-chip__icon {
  width: 30px;
  height: 30px;
  display: block;
  fill: currentColor;
}

#qrb-shape-controls .qrb-option-block {
  display: grid;
  gap: 8px;
}

#qrb-shape-controls .qrb-option-block > .qrb-color-inline-control {
  margin-top: 2px;
  max-width: 320px;
}

#qrb-shape-controls .qrb-shape-color-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 2px;
}

#qrb-shape-controls .qrb-color-inline-control__body--shape {
  grid-template-columns: minmax(0, 1fr) 44px;
}

#qrb-shape-controls .qrb-color-inline-control__body--shape .qrb-color-inline-control__hex {
  background: #f8fafc;
  color: #475569;
}

@media (max-width: 640px) {
  #qrb-shape-controls .qrb-shape-color-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 991px) {
  .qrb-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .qrb-shell {
    padding: 12px;
  }

  .qrb-types-panel,
  .qrb-step-panel {
    padding: 14px;
  }

  .qrb-tabs {
    grid-template-columns: 1fr;
  }

  .qrb-color-grid {
    grid-template-columns: 1fr;
  }
}