*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --green-50: #f0fdf4;
  --green-100: #dcfce7;
  --green-200: #bbf7d0;
  --green-600: #16a34a;
  --green-700: #15803d;
  --green-800: #166534;
  --green-900: #14532d;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --red-500: #ef4444;
  --blue-500: #3b82f6;
  --amber-500: #f59e0b;
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
  --radius: 8px;
  --radius-lg: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  min-height: 100vh;
}

header {
  background: linear-gradient(135deg, var(--green-800), var(--green-900));
  color: #fff;
  padding: 24px 0;
  box-shadow: var(--shadow-lg);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.header-inner h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 1px;
}

.subtitle {
  font-size: 14px;
  opacity: .8;
  margin-top: 4px;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  background: #fff;
  padding: 16px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.search-group {
  display: flex;
  gap: 8px;
  flex: 1;
  min-width: 200px;
}

.search-group input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  transition: border-color .2s;
}

.search-group input:focus {
  outline: none;
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, .15);
}

.action-group {
  display: flex;
  gap: 8px;
  align-items: center;
}

.gwo-indicator {
  font-size: 12px;
  color: #666;
  background: #f0f4ff;
  padding: 4px 10px;
  border-radius: 4px;
  white-space: nowrap;
  cursor: default;
  border: 1px solid #d0d8ee;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
}

.btn .icon { font-size: 16px; }

.btn-search { background: var(--green-600); color: #fff; }
.btn-search:hover { background: var(--green-700); }

.btn-image { background: var(--blue-500); color: #fff; }
.btn-image:hover { background: #2563eb; }

.btn-add { background: var(--amber-500); color: #fff; }
.btn-add:hover { background: #d97706; }

.btn-cancel { background: var(--gray-100); color: var(--gray-700); }
.btn-cancel:hover { background: var(--gray-200); }

.btn-submit { background: var(--green-600); color: #fff; }
.btn-submit:hover { background: var(--green-700); }

.btn-upload {
  background: var(--gray-100);
  color: var(--gray-700);
}
.btn-upload:hover {
  background: var(--gray-200);
}

.btn-stats { background: var(--gray-700); color: #fff; }
.btn-stats:hover { background: var(--gray-800); }

.btn-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--gray-400);
  padding: 4px 8px;
  border-radius: 4px;
}
.btn-close:hover { color: var(--gray-600); background: var(--gray-100); }

.btn-clear-filter {
  background: none;
  border: 1px solid var(--gray-300);
  font-size: 12px;
  cursor: pointer;
  color: var(--gray-500);
  padding: 4px 10px;
  border-radius: 4px;
  transition: all .2s;
}
.btn-clear-filter:hover { color: var(--red-500); border-color: var(--red-500); }

.image-search-panel {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
  overflow: hidden;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
}

.panel-header h3 { font-size: 16px; color: var(--gray-700); }

.panel-body {
  padding: 20px;
}

.preview-area {
  margin-top: 8px;
  max-width: 200px;
}

.preview-area img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
}

.hidden { display: none !important; }

.layout {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: sticky;
  top: 20px;
  max-height: calc(100vh - 120px);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-100);
}

.sidebar-header h3 {
  font-size: 15px;
  color: var(--gray-800);
  font-weight: 600;
}

.sidebar-body {
  overflow-y: auto;
  flex: 1;
  padding: 4px 0;
}

.sidebar-body::-webkit-scrollbar {
  width: 4px;
}
.sidebar-body::-webkit-scrollbar-thumb {
  background: var(--gray-200);
  border-radius: 2px;
}

.taxonomy-loading {
  padding: 20px;
  text-align: center;
  color: var(--gray-400);
  font-size: 13px;
}

.taxonomy-order {
  border-bottom: 1px solid var(--gray-50);
}

.taxonomy-order-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--green-800);
  transition: background .15s;
  user-select: none;
}

.taxonomy-order-header:hover {
  background: var(--green-50);
}

.taxonomy-order-header .arrow {
  font-size: 10px;
  transition: transform .2s;
  color: var(--gray-400);
}

.taxonomy-order-header .arrow.expanded {
  transform: rotate(90deg);
}

.taxonomy-order-header .count {
  margin-left: auto;
  font-size: 11px;
  color: var(--gray-400);
  font-weight: 400;
}

.taxonomy-families {
  padding: 0 0 4px;
}

.taxonomy-family-group {
  border-top: 1px solid var(--gray-50);
}

.taxonomy-family-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px 7px 24px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  color: var(--green-700);
  transition: background .15s;
  user-select: none;
}

.taxonomy-family-header:hover {
  background: var(--green-50);
}

.taxonomy-family-header .arrow {
  font-size: 10px;
  transition: transform .2s;
  color: var(--gray-400);
}

.taxonomy-family-header .arrow.expanded {
  transform: rotate(90deg);
}

.taxonomy-family-header .count {
  margin-left: auto;
  font-size: 11px;
  color: var(--gray-400);
  font-weight: 400;
}

.taxonomy-family-header.active {
  background: var(--green-100);
  color: var(--green-800);
  font-weight: 600;
}

.taxonomy-genera {
  padding: 0 0 2px;
}

.taxonomy-genus {
  display: block;
  width: 100%;
  text-align: left;
  padding: 5px 16px 5px 36px;
  border: none;
  background: none;
  font-size: 12px;
  color: var(--gray-500);
  cursor: pointer;
  transition: all .15s;
  font-family: inherit;
}

.taxonomy-genus:hover {
  background: var(--green-50);
  color: var(--green-700);
}

.taxonomy-genus.active {
  background: var(--green-100);
  color: var(--green-800);
  font-weight: 600;
}

.taxonomy-family {
  display: block;
  width: 100%;
  text-align: left;
  padding: 6px 16px 6px 28px;
  border: none;
  background: none;
  font-size: 13px;
  color: var(--gray-600);
  cursor: pointer;
  transition: all .15s;
  font-family: inherit;
}

.taxonomy-family:hover {
  background: var(--green-50);
  color: var(--green-700);
}

.taxonomy-family.active,
.taxonomy-order-header.active {
  background: var(--green-100);
  color: var(--green-800);
  font-weight: 600;
}

.sidebar-tabs {
  display: flex;
  border-bottom: 1px solid var(--gray-100);
}

.sidebar-tab {
  flex: 1;
  padding: 10px 4px;
  border: none;
  background: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-500);
  cursor: pointer;
  transition: all .2s;
  font-family: inherit;
  position: relative;
}

.sidebar-tab:hover {
  color: var(--green-700);
  background: var(--green-50);
}

.sidebar-tab.active {
  color: var(--green-800);
  font-weight: 600;
}

.sidebar-tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--green-600);
  border-radius: 1px;
}

.taxonomy-flat-list {
  padding: 4px 0;
}

.taxonomy-flat-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 16px;
  border: none;
  background: none;
  font-size: 13px;
  color: var(--gray-600);
  cursor: pointer;
  transition: all .15s;
  font-family: inherit;
}

.taxonomy-flat-item:hover {
  background: var(--green-50);
  color: var(--green-700);
}

.taxonomy-flat-item.active {
  background: var(--green-100);
  color: var(--green-800);
  font-weight: 600;
}

.content {
  flex: 1;
  min-width: 0;
}

.current-filter {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
  font-size: 13px;
}

.filter-label {
  color: var(--gray-500);
}

.filter-text {
  color: var(--green-700);
  font-weight: 500;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
  cursor: pointer;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: var(--gray-100);
}

.card-image-placeholder {
  width: 100%;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  background: var(--green-50);
  color: var(--green-600);
}

.card-body {
  padding: 14px;
}

.card-body h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-sci-name {
  font-size: 12px;
  color: var(--gray-400);
  font-style: italic;
  margin-bottom: 8px;
}

.card-taxonomy {
  font-size: 12px;
  color: var(--green-600);
  margin-bottom: 6px;
  display: flex;
  gap: 8px;
}

.card-taxonomy span {
  background: var(--green-50);
  padding: 1px 8px;
  border-radius: 4px;
}

.card-info {
  font-size: 13px;
  color: var(--gray-600);
  line-height: 1.6;
}

.card-info span { display: block; }

.card-actions {
  display: flex;
  gap: 8px;
  padding: 10px 14px;
  border-top: 1px solid var(--gray-100);
}

.card-actions .btn {
  flex: 1;
  padding: 6px 12px;
  font-size: 12px;
  justify-content: center;
}

.btn-edit { background: var(--blue-500); color: #fff; }
.btn-edit:hover { background: #2563eb; }

.btn-delete { background: var(--red-500); color: #fff; }
.btn-delete:hover { background: #dc2626; }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--gray-400);
}

.empty-icon { font-size: 64px; margin-bottom: 12px; }

.empty-state p { font-size: 16px; }

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 40px;
  color: var(--gray-500);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--green-600);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  padding: 20px;
}

.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-lg { max-width: 720px; }

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--gray-100);
  flex-shrink: 0;
}

.modal-header h2 { font-size: 18px; color: var(--gray-800); }

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-100);
  margin-top: 16px;
}

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

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 4px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  transition: border-color .2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, .15);
}

.form-group textarea { resize: vertical; min-height: 60px; }

.radio-group {
  display: flex;
  gap: 16px;
  padding-top: 6px;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--gray-700);
  cursor: pointer;
}

.radio-label input[type="radio"] {
  width: auto;
  margin: 0;
  cursor: pointer;
}

.custom-fields-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.custom-fields-header label {
  margin-bottom: 0;
}

.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
  border-radius: 4px;
  background: var(--gray-100);
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
  cursor: pointer;
  font-family: inherit;
}
.btn-sm:hover { background: var(--gray-200); }

.custom-fields-empty {
  font-size: 13px;
  color: var(--gray-400);
  padding: 8px 0;
}

.custom-field-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-50);
}

.custom-field-edit {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
}
.custom-field-edit:focus {
  outline: none;
  border-color: var(--green-600);
}

.btn-save-field { background: var(--green-600); color: #fff; border: none; }
.btn-save-field:hover { background: var(--green-700); }

.btn-delete-field { background: var(--red-500); color: #fff; border: none; }
.btn-delete-field:hover { background: #dc2626; }

.detail-section {
  margin-bottom: 16px;
}

.detail-section h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--green-800);
  margin-bottom: 6px;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--green-100);
}

.detail-section p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-700);
}

.detail-section img {
  width: 100%;
  max-height: 400px;
  object-fit: contain;
  border-radius: var(--radius);
  background: var(--gray-100);
}

.detail-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.detail-meta-item {
  background: var(--gray-50);
  padding: 10px 12px;
  border-radius: var(--radius);
}

.detail-meta-item .label {
  font-size: 11px;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: .5px;
}

.detail-meta-item .value {
  font-size: 14px;
  color: var(--gray-800);
  font-weight: 500;
  margin-top: 2px;
}

/* Stats */
.modal-stats {
  max-width: 800px;
}

.stats-summary {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stats-card {
  background: var(--green-50);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.stats-card-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--green-800);
}

.stats-card-label {
  font-size: 12px;
  color: var(--green-600);
  margin-top: 2px;
}

.stats-charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 700px) {
  .stats-charts { grid-template-columns: 1fr; }
}

.stats-chart h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 10px;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--green-100);
}

.stats-empty {
  font-size: 13px;
  color: var(--gray-400);
  padding: 20px;
  text-align: center;
}

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

.bar-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.bar-label {
  width: 80px;
  font-size: 12px;
  color: var(--gray-600);
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-shrink: 0;
}

.bar-track {
  flex: 1;
  height: 18px;
  background: var(--gray-100);
  border-radius: 3px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green-600), var(--green-700));
  border-radius: 3px;
  transition: width .4s ease;
  min-width: 2px;
}

.bar-value {
  width: 30px;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-700);
  text-align: right;
  flex-shrink: 0;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gray-800);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  animation: toastIn .3s ease;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.status-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-在库 { background: #43a047; }
.status-不在库 { background: #e53935; }
.status-外借 { background: #fb8c00; }

.similarity-badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--green-100);
  color: var(--green-700);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .layout {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    position: static;
    max-height: none;
  }
  .sidebar-body {
    max-height: 300px;
  }
}

/* Auth overlay */
.auth-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 50%, #a5d6a7 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.auth-box {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,.15);
  padding: 40px;
  width: 100%;
  max-width: 380px;
}

.auth-box h2 {
  text-align: center;
  font-size: 22px;
  color: var(--green-800);
  margin-bottom: 4px;
}

.auth-subtitle {
  text-align: center;
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 24px;
}

.auth-box .form-group {
  margin-bottom: 14px;
}

.auth-box input[type="text"],
.auth-box input[type="password"] {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  box-sizing: border-box;
}

.auth-box input:focus {
  outline: none;
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px var(--green-100);
}

.auth-link {
  text-align: center;
  font-size: 13px;
  margin-top: 14px;
  color: var(--gray-400);
}

.auth-link a {
  color: var(--green-600);
  text-decoration: none;
}

.auth-link a:hover {
  text-decoration: underline;
}

.auth-error {
  text-align: center;
  font-size: 12px;
  color: #e53935;
  margin-top: 8px;
  min-height: 18px;
}

/* User management */
.user-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.user-table th,
.user-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--gray-100);
}

.user-table th {
  font-weight: 600;
  color: var(--gray-600);
  background: var(--gray-50);
  font-size: 12px;
}

.user-table td {
  color: var(--gray-700);
}

.btn-logout {
  background: transparent;
  border: 1px solid var(--gray-200);
  color: var(--gray-500);
  padding: 10px 14px;
}

.btn-logout:hover {
  background: var(--gray-50);
  color: var(--gray-700);
}

.btn-admin {
  background: var(--green-50);
  border-color: var(--green-300);
  color: var(--green-700);
}

.btn-admin:hover {
  background: var(--green-100);
}