:root {
  --bg: #ffffff;
  --panel: #f8f9fa;
  --border: #dee2e6;
  --text: #212529;
  --muted: #6c757d;
  --accent: #0d6efd;
  --accent-hover: #0b5ed7;
  --danger: #dc3545;
  --success: #198754;
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
}

a {
  color: inherit;
  text-decoration: none;
}

.shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  border-right: 1px solid var(--border);
  background: var(--panel);
  padding: 20px 14px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 10px 18px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 14px;
}

.brand strong {
  font-size: 15px;
  letter-spacing: 0.02em;
}

.brand span {
  font-size: 12px;
  color: var(--muted);
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav a {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
}

.nav a:hover {
  background: rgba(13, 110, 253, 0.06);
  color: var(--text);
}

.nav a.is-active {
  background: rgba(13, 110, 253, 0.1);
  color: var(--accent);
}

.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.topbar h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
}

.content {
  padding: 22px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px;
}

.card + .card {
  margin-top: 14px;
}

.muted {
  color: var(--muted);
  font-size: 13px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
}

.btn:hover {
  border-color: #adb5bd;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

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

.btn-ghost {
  background: transparent;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.field label {
  font-size: 13px;
  color: var(--muted);
}

input[type="text"],
input[type="password"] {
  width: 100%;
  max-width: 420px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  outline: none;
}

input:focus {
  border-color: rgba(13, 110, 253, 0.5);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

.banner {
  margin: 0 22px 0;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid rgba(34, 197, 94, 0.35);
  background: rgba(34, 197, 94, 0.12);
  color: #bbf7d0;
  font-size: 13px;
}

.banner.is-error {
  border-color: rgba(239, 68, 68, 0.35);
  background: rgba(239, 68, 68, 0.12);
  color: #fecaca;
}

.guest {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.guest-card {
  width: 100%;
  max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.guest-card h1 {
  margin: 0 0 6px;
  font-size: 20px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table th,
.table td {
  border-bottom: 1px solid var(--border);
  padding: 12px 10px;
  text-align: left;
}

.table th {
  color: var(--muted);
  font-weight: 500;
}

.empty {
  padding: 28px 8px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 900px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .nav {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

/* Card header */
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-header h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

/* Table actions */
.actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* Small buttons */
.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
  border-radius: 6px;
}

/* Button variants */
.btn-success {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.btn-success:hover {
  background: #157347;
  border-color: #157347;
  color: white;
}

.btn-danger {
  background: var(--danger);
  border-color: var(--danger);
  color: white;
}

.btn-danger:hover {
  background: #bb2d3b;
  border-color: #bb2d3b;
  color: white;
}

.btn-warning {
  background: #ffc107;
  border-color: #ffc107;
  color: #000;
}

.btn-warning:hover {
  background: #ffca2c;
  border-color: #ffca2c;
  color: #000;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 12px;
  background: var(--border);
  color: var(--muted);
}

.badge-success {
  background: rgba(25, 135, 84, 0.15);
  color: var(--success);
}

.badge-warning {
  background: rgba(255, 193, 7, 0.2);
  color: #997404;
}

/* Form styles */
.form {
  max-width: 600px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 500;
}

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

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: rgba(13, 110, 253, 0.5);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.form-actions .btn-primary {
  color: white;
}

/* Filter bar */
.filter-bar {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 16px;
}

.filter-form {
  margin: 0;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
}

.filter-item {
  flex: 0 0 auto;
  min-width: 140px;
}

.filter-item input[type="text"],
.filter-item input[type="date"],
.filter-item select {
  width: 100%;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  outline: none;
}

.filter-item input:focus,
.filter-item select:focus {
  border-color: rgba(13, 110, 253, 0.5);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

.filter-actions {
  flex: 0 0 auto;
  display: flex;
  gap: 8px;
}

.result-count {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
  padding-left: 2px;
}

/* Badge variants */
.badge-primary {
  background: rgba(13, 110, 253, 0.15);
  color: var(--accent);
}

.badge-info {
  background: rgba(23, 162, 184, 0.15);
  color: #0dcaf0;
}

.badge-danger {
  background: rgba(220, 53, 69, 0.15);
  color: var(--danger);
}

.badge-default {
  background: rgba(108, 117, 125, 0.15);
  color: var(--muted);
}

/* Order table specific */
.order-no {
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 13px;
  color: var(--accent);
}

.product-name {
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.amount {
  font-weight: 600;
  color: var(--danger);
}

.logistics {
  font-size: 12px;
  max-width: 140px;
}

.logistics-info {
  display: inline-block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: middle;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 18px;
  padding-top: 14px;
  /* border-top: 1px solid var(--border); */
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.page-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.page-current {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  font-weight: 500;
}

.page-ellipsis {
  color: var(--muted);
  padding: 0 4px;
}

/* Image uploader */
.image-uploader {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 20px;
  background: var(--bg);
}

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 30px;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s ease;
  border-radius: 6px;
}

.upload-placeholder:hover,
.upload-placeholder.dragover {
  background: rgba(13, 110, 253, 0.05);
  border-color: var(--accent);
  color: var(--accent);
}

.upload-placeholder svg {
  opacity: 0.6;
}

.image-preview-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.image-preview-item {
  position: relative;
  width: 120px;
  height: 120px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.image-preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-remove-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}

.image-preview-item:hover .image-remove-btn {
  opacity: 1;
}

/* Form hint */
.form-hint {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

/* Guarantee list */
.guarantee-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.guarantee-item {
  cursor: pointer;
}

.guarantee-item input[type="checkbox"] {
  display: none;
}

.guarantee-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  border: 1px solid;
  transition: all 0.2s;
}

.guarantee-item input:checked + .guarantee-tag {
  box-shadow: 0 0 0 2px currentColor;
}

/* Spec editor */
.spec-editor {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}

.spec-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.spec-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.spec-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
}

.spec-name-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.spec-name-input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}

.spec-values-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: flex-start;
}

.spec-values-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.spec-value-add-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.spec-value-input {
  padding: 6px 10px;
  border: 1px dashed var(--border);
  border-radius: 4px;
  font-size: 13px;
  min-width: 120px;
}

.add-spec-value-btn {
  padding: 6px 0px;
  background: var(--accent);
  border: none;
  color: white;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  width: 80px;
}

.add-spec-value-btn:hover {
  background: var(--accent-hover);
}

.spec-value-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: var(--accent);
  color: white;
  border-radius: 4px;
  font-size: 13px;
}

.spec-value-tag .remove-value-btn {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: 0;
  font-size: 14px;
  line-height: 1;
}

.spec-table-wrapper {
  margin-top: 16px;
  overflow-x: auto;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.spec-table th,
.spec-table td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  background: var(--bg);
}

.spec-table th {
  background: var(--panel);
  font-weight: 500;
  color: var(--muted);
}

.spec-names-cell {
  color: var(--accent);
  font-weight: 500;
}

.spec-price-input,
.spec-stock-input {
  width: 80px;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 13px;
}

/* Rich text editor */
.editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 8px 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
}

.editor-btn {
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.editor-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.editor-separator {
  width: 1px;
  background: var(--border);
  margin: 0 4px;
}

.editor-content {
  min-height: 300px;
  max-height: 500px;
  overflow-y: auto;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 0 0 8px 8px;
  font-size: 14px;
  line-height: 1.7;
  outline: none;
}

.editor-content:focus {
  border-color: rgba(13, 110, 253, 0.5);
}

.editor-content:empty:before {
  content: attr(placeholder);
  color: var(--muted);
}

.editor-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 10px 0;
}

.editor-content h3 {
  font-size: 18px;
  margin: 16px 0 8px;
}

.editor-content p {
  margin: 8px 0;
}

.editor-content ul,
.editor-content ol {
  padding-left: 24px;
  margin: 8px 0;
}

/* Spec section - mode tabs */
.spec-section {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.spec-mode-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.spec-tab {
  flex: 1;
  padding: 12px 16px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.spec-tab:hover {
  color: var(--text);
}

.spec-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: var(--bg);
}

/* Single spec */
.spec-single {
  padding: 16px;
}

.spec-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

.spec-row:last-child {
  margin-bottom: 0;
}

.spec-cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.spec-cell label {
  font-size: 13px;
  color: var(--muted);
}

.spec-cell input {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}

.spec-cell input:focus {
  border-color: rgba(13, 110, 253, 0.5);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
  outline: none;
}

/* Multi spec */
.spec-multi {
  padding: 16px;
}

/* Spec table - enhanced */
.spec-table th,
.spec-table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  background: var(--bg);
  font-size: 13px;
}

.spec-table th {
  background: var(--panel);
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
}

.spec-table input[type="number"],
.spec-table input[type="text"] {
  width: 80px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 13px;
}

.spec-table input:focus {
  border-color: var(--accent);
  outline: none;
}

.spec-names-cell {
  color: var(--accent);
  font-weight: 500;
  max-width: 150px;
}

.spec-image-cell {
  width: 60px;
}

.spec-img-thumb {
  width: 50px;
  height: 50px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.spec-status-cell {
  text-align: center;
}

.spec-status-cell input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

@media (max-width: 768px) {
  .spec-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .spec-row {
    grid-template-columns: 1fr;
  }
}