/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #f0f2f5;
  --color-surface: #ffffff;
  --color-border: #e0e3e8;
  --color-text: #1a1d23;
  --color-text-secondary: #5f6672;
  --color-text-muted: #9aa0ab;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-danger: #dc2626;
  --color-danger-hover: #b91c1c;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
}

html {
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Header ===== */
.app-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0 20px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

.header-left h1 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 14px;
  border: none;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  line-height: 1.4;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.btn-danger {
  background: #fef2f2;
  color: var(--color-danger);
  border: 1px solid #fecaca;
}

.btn-danger:hover {
  background: #fee2e2;
}

.btn-sm {
  padding: 5px 12px;
  font-size: 12px;
}

.btn-print {
  padding: 7px 18px;
  font-size: 14px;
  font-weight: 600;
}

.print-count {
  display: inline-block;
  background: rgba(255,255,255,0.25);
  padding: 0 6px;
  border-radius: 8px;
  font-size: 12px;
  min-width: 20px;
  text-align: center;
}

/* ===== Label Wall ===== */
.label-wall {
  flex: 1;
  padding: 16px 20px 20px;
  overflow-y: auto;
}

.wall-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  color: var(--color-text-muted);
  gap: 8px;
}

.wall-empty svg {
  opacity: 0.4;
}

.wall-empty p {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.wall-empty span {
  font-size: 13px;
}

/* ===== Group Section ===== */
.group-section {
  margin-bottom: 20px;
}

.group-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  cursor: pointer;
  user-select: none;
  border-radius: 8px;
  border-left: 4px solid #6b7280;
  margin-bottom: 4px;
  transition: background 0.15s;
}

.group-content {
  transition: opacity 0.2s, max-height 0.3s;
  overflow: hidden;
}

.group-content.collapsed {
  display: none;
}

.sub-group-section {
  margin: 4px 0 8px 16px;
}

.sub-group-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  cursor: pointer;
  user-select: none;
  border-left: 3px solid #6b7280;
  border-radius: 4px;
  background: rgba(0,0,0,0.03);
  margin-bottom: 4px;
  transition: background 0.15s;
}

.sub-group-header:hover {
  background: rgba(0,0,0,0.06);
}

.sub-group-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
}

.group-drag-handle {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  opacity: 0.4;
  cursor: grab;
  flex-shrink: 0;
  border-radius: 3px;
  transition: opacity 0.15s, background 0.15s;
}

.group-drag-handle:hover {
  opacity: 0.8;
  background: rgba(0,0,0,0.06);
}

.group-drag-handle:active {
  cursor: grabbing;
}

.group-section.group-dragging {
  opacity: 0.4;
}

.group-section.group-drag-over-top {
  border-top: 2px solid var(--color-primary);
  margin-top: -2px;
}

.group-section.group-drag-over-bottom {
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: -2px;
}

.group-section.drag-over,
.sub-group-section.drag-over {
  background: rgba(37, 99, 235, 0.06);
  border-radius: 8px;
  outline: 2px dashed var(--color-primary);
  outline-offset: -2px;
}

.group-toggle {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.group-toggle.collapsed {
  transform: rotate(-90deg);
}

.group-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.2px;
}

.group-badge {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-bg);
  padding: 1px 8px;
  border-radius: 10px;
}

.group-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  transition: opacity 0.2s ease;
  min-height: 60px;
  padding: 8px;
  border-radius: var(--radius);
}

.group-cards.collapsed {
  display: none;
}

.group-section.drag-over {
  background: rgba(37, 99, 235, 0.06);
  border-radius: var(--radius);
  outline: 2px dashed var(--color-primary);
  outline-offset: -2px;
}

/* ===== Label Card ===== */
.label-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}

.label-card:hover {
  box-shadow: var(--shadow-md);
  border-color: #c5c9d0;
}

.label-card.has-qty {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), 0 2px 12px rgba(37, 99, 235, 0.15);
}

.label-card.has-qty .card-label-preview {
  background: rgba(37, 99, 235, 0.02);
}

/* Selected checkmark badge */
.label-card .selected-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  background: var(--color-primary);
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  z-index: 2;
  box-shadow: 0 1px 4px rgba(37, 99, 235, 0.3);
  cursor: pointer;
}

.selected-badge svg {
  width: 12px;
  height: 12px;
  color: #fff;
}

/* Label preview inside card */
.card-label-preview {
  width: 100%;
  aspect-ratio: 50 / 30;
  background: #fff;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.card-label-preview .clp-barcode-section {
  flex: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px 8px 0 8px;
  min-height: 0;
}

.card-label-preview .clp-barcode-section svg,
.card-label-preview .clp-barcode-section img {
  width: 100%;
  height: auto;
  display: block;
}

.card-label-preview .clp-barcode-text {
  text-align: center;
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: #000;
  padding: 2px 4px;
  line-height: 1.2;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.card-label-preview .clp-info-block {
  background: #000;
  color: #fff;
  padding: 2px 3mm;
  text-align: center;
  flex-shrink: 0;
  flex: 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
}

.card-label-preview .clp-info-line {
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  text-align: center;
}

/* Card actions row */
.card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 8px;
  gap: 4px;
  flex-wrap: wrap;
}

.card-action-btns {
  display: flex;
  gap: 2px;
}

.card-icon-btn {
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all 0.1s;
}

.card-icon-btn:hover {
  background: var(--color-bg);
}

.card-icon-btn.edit-btn:hover {
  color: var(--color-primary);
}

.card-icon-btn.delete-btn:hover {
  color: var(--color-danger);
}

/* Group selector on card */
.card-group-selector {
  position: relative;
  display: inline-flex;
}

.card-group-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 8px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.1s;
  white-space: nowrap;
}

.card-group-badge:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.04);
}

.card-group-badge svg {
  width: 10px;
  height: 10px;
  opacity: 0.5;
}

.card-group-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 120px;
  z-index: 100;
  display: none;
  overflow: hidden;
}

.card-group-dropdown.open {
  display: block;
}

.card-group-dropdown-item {
  display: block;
  width: 100%;
  padding: 7px 12px;
  border: none;
  background: none;
  text-align: left;
  font-size: 12px;
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.1s;
}

.card-group-dropdown-item:hover {
  background: var(--color-bg);
}

.card-group-dropdown-item.active {
  color: var(--color-primary);
  font-weight: 600;
  background: rgba(37, 99, 235, 0.04);
}

/* Quantity area */
.qty-area {
  display: flex;
  align-items: center;
  gap: 4px;
}

.qty-input-wrap {
  width: 42px;
  height: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-surface);
}

.qty-input-wrap input {
  width: 100%;
  height: 100%;
  border: none;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--color-text);
  background: transparent;
  outline: none;
  padding: 0;
}

.qty-input-wrap.has-value {
  border-color: var(--color-primary);
  background: rgba(37, 99, 235, 0.04);
}

.qty-input-wrap.has-value input {
  color: var(--color-primary);
}

/* Quick qty buttons */
.qty-quick-btns {
  display: flex;
  gap: 2px;
}

.qty-quick-btn {
  height: 26px;
  min-width: 26px;
  padding: 0 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--color-text-secondary);
  transition: all 0.1s;
}

.qty-quick-btn:hover {
  background: #e0e3e8;
  color: var(--color-text);
  border-color: #c5c9d0;
}

.qty-quick-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.15s ease;
}

.modal-overlay.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.modal {
  background: var(--color-surface);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 420px;
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
  animation: slideUp 0.2s ease;
}

.modal-sm {
  width: 380px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
  font-size: 15px;
  font-weight: 600;
}

.modal-close {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 18px;
  color: var(--color-text-muted);
  transition: all 0.1s;
}

.modal-close:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.modal-body {
  padding: 16px 20px;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 20px;
  border-top: 1px solid var(--color-border);
}

/* ===== Form ===== */
.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.required {
  color: var(--color-danger);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.15s ease;
  font-family: inherit;
}

.form-group select {
  cursor: pointer;
  appearance: auto;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.hint-text {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
  line-height: 1.4;
}

textarea {
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ===== Group Add Row ===== */
.group-add-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.group-add-row input {
  flex: 1;
  padding: 7px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--color-text);
  background: var(--color-surface);
}

.group-add-row input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.12);
}

/* ===== Group List ===== */
.group-list {
  max-height: 200px;
  overflow-y: auto;
}

.group-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  margin-bottom: 4px;
}

.group-color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-right: 6px;
}

.group-list-item-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  flex: 1;
}

.group-list-item-count {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-right: 8px;
}

.group-list-item-actions {
  display: flex;
  gap: 2px;
}

/* ===== Modal Preview Label ===== */
.modal-preview-label {
  width: 100%;
  aspect-ratio: 50 / 30;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  margin-top: 4px;
}

.mp-barcode-section {
  flex: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px 8px 0 8px;
  min-height: 0;
}

.mp-barcode-section svg,
.mp-barcode-section img {
  width: 100%;
  height: auto;
  display: block;
}

.mp-barcode-text {
  text-align: center;
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: #000;
  padding: 2px 4px;
  line-height: 1.2;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.mp-info-block {
  background: #000;
  color: #fff;
  padding: 3px 6px;
  text-align: center;
  flex-shrink: 0;
  flex: 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
}

.mp-info-line {
  font-size: 11px;
  font-weight: 700;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ===== Print Container ===== */
.print-container {
  position: absolute;
  left: -9999px;
  top: 0;
  width: 50mm;
}

/* ===== Print Styles ===== */
@media print {
  @page {
    size: 50mm 30mm;
    margin: 0;
  }

  html, body {
    margin: 0 !important;
    padding: 0 !important;
    width: 50mm;
    height: 30mm;
  }

  body {
    background: #fff !important;
  }

  .app-header,
  .label-wall,
  .modal-overlay {
    display: none !important;
  }

  .print-container {
    position: static !important;
    left: auto !important;
    width: 50mm;
  }

  .print-label {
    width: 50mm;
    height: 30mm;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    page-break-after: always;
    break-after: page;
    position: relative;
  }

  .print-label:last-child {
    page-break-after: auto;
    break-after: auto;
  }

  .print-label .pl-barcode-section {
    flex: 5;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2mm 2mm 0 2mm;
  }

  .print-label .pl-barcode-section img {
    max-width: 44mm;
    max-height: 13mm;
    width: auto;
    height: auto;
    display: block;
  }

  .print-label .pl-barcode-text {
    text-align: center;
    font-size: 3mm;
    font-family: 'Consolas', 'Courier New', monospace;
    font-weight: 700;
    color: #000;
    padding: 0.5mm 2mm;
    line-height: 1.2;
    letter-spacing: 0.5mm;
    flex-shrink: 0;
  }

  .print-label .pl-info-block {
    background: #000 !important;
    color: #fff !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    padding: 0.5mm 3mm;
    text-align: center;
    flex-shrink: 0;
    flex: 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.2mm;
  }

  .print-label .pl-info-line {
    font-weight: 700;
    line-height: 1.15;
    color: #fff !important;
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    text-align: center;
  }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #c5c9d0;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #a0a5ae;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #1a1d23;
  color: #fff;
  padding: 8px 20px;
  border-radius: var(--radius);
  font-size: 13px;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 1000;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== Mouse Drag ===== */
.is-dragging {
  cursor: grabbing !important;
  user-select: none;
}

.is-dragging .label-card {
  user-select: none;
}

.drag-ghost {
  position: fixed;
  left: 0;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 600;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}