:root {
  --color-primary: #8B6914;
  --color-primary-light: #B8942A;
  --color-primary-dark: #6B5110;
  --color-primary-50: rgba(139, 105, 20, 0.05);
  --color-primary-100: rgba(139, 105, 20, 0.10);
  --color-bg: #F8F5F0;
  --color-bg-warm: #F2EDE4;
  --color-bg-card: #FFFFFF;
  --color-bg-inverse: #2C2517;
  --color-surface: #F0EBE1;
  --color-surface-hover: #E8E1D5;
  --color-text-primary: #2C2517;
  --color-text-secondary: #6B5E4E;
  --color-text-tertiary: #9C8E7C;
  --color-text-inverse: #F8F5F0;
  --color-border: #E5DED1;
  --color-border-light: #EDE8DF;
  --state-success: #4A7C59;
  --state-warning: #C07D2A;
  --state-error: #B84233;
  --state-info: #5A7B9A;
  --shadow-card: 0 1px 3px rgba(44, 37, 23, 0.04);
  --shadow-elevated: 0 4px 12px rgba(44, 37, 23, 0.05);
  --shadow-float: 0 8px 24px rgba(44, 37, 23, 0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-primary);
  background: var(--color-surface);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  min-width: 240px;
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  border-bottom: 1px solid rgba(248, 245, 240, 0.1);
}

.sidebar-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.sidebar-logo-text {
  font-size: 16px;
  font-weight: 600;
  font-family: Georgia, 'Songti SC', serif;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}

.nav-group {
  margin-bottom: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: rgba(248, 245, 240, 0.7);
  transition: all 0.2s;
  cursor: pointer;
}

.nav-item:hover {
  background: rgba(248, 245, 240, 0.06);
  color: rgba(248, 245, 240, 0.9);
}

.nav-item.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.nav-item-icon {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.nav-subitems {
  margin-left: 18px;
  margin-top: 4px;
  padding-left: 12px;
  border-left: 1px solid rgba(248, 245, 240, 0.12);
  display: none;
}

.nav-subitems.expanded {
  display: block;
}

.nav-subitem {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  color: rgba(248, 245, 240, 0.55);
  transition: all 0.2s;
  cursor: pointer;
  margin-bottom: 2px;
}

.nav-subitem:hover {
  background: rgba(248, 245, 240, 0.06);
  color: rgba(248, 245, 240, 0.85);
}

.nav-subitem.active {
  background: rgba(139, 105, 20, 0.18);
  color: var(--color-text-inverse);
  font-weight: 500;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(248, 245, 240, 0.1);
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
}

.admin-info-name {
  font-size: 13px;
  color: var(--color-text-inverse);
  font-weight: 500;
}

.admin-info-email {
  font-size: 11px;
  color: rgba(248, 245, 240, 0.45);
}

.user-dropdown {
  position: absolute;
  bottom: 60px;
  left: 16px;
  right: 16px;
  background: rgba(248, 245, 240, 0.08);
  border-radius: 8px;
  z-index: 100;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.2s ease;
}

.user-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-dropdown-item {
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: rgba(248, 245, 240, 0.7);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
}

.user-dropdown-item:hover {
  background: rgba(248, 245, 240, 0.06);
  color: rgba(248, 245, 240, 0.9);
}

.user-dropdown-item.danger:hover {
  background: rgba(248, 245, 240, 0.06);
  color: rgba(248, 245, 240, 0.9);
}

.sidebar-footer {
  position: relative;
}

.main-content {
  flex: 1;
  margin-left: 240px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.page-header {
  padding: 24px 32px;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-bottom: 12px;
}

.breadcrumb a {
  color: var(--color-text-tertiary);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.page-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.page-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text-primary);
  font-family: Georgia, 'Songti SC', serif;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
  border: 1px solid transparent;
}

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

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

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

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

.btn-danger {
  color: var(--state-error);
  border-color: rgba(184, 66, 51, 0.3);
  background: transparent;
}

.btn-danger:hover {
  background: rgba(184, 66, 51, 0.08);
}

.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
  border-radius: 6px;
}

.btn-icon {
  width: 28px;
  height: 28px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  color: var(--color-text-tertiary);
  transition: all 0.2s;
}

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

.btn-icon.danger:hover {
  background: rgba(184, 66, 51, 0.08);
  color: var(--state-error);
}

.filter-bar {
  padding: 16px 32px;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filter-label {
  font-size: 12px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.filter-input,
.filter-select {
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  font-size: 13px;
  color: var(--color-text-primary);
  outline: none;
  transition: all 0.2s;
  min-width: 200px;
}

.filter-input:focus,
.filter-select:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 2px var(--color-primary-100);
}

.search-input-wrap {
  position: relative;
}

.search-input-wrap .filter-input {
  padding-left: 36px;
  min-width: 280px;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-tertiary);
  font-size: 14px;
}

.page-body {
  flex: 1;
  padding: 24px 32px;
}

.card {
  background: var(--color-bg-card);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  background: var(--color-surface);
}

th {
  padding: 12px;
  text-align: left;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

td {
  padding: 16px 12px;
  font-size: 13px;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-light);
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:nth-child(even) {
  background: var(--color-bg-warm);
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 500;
}

.tag-success {
  background: rgba(74, 124, 89, 0.1);
  color: var(--state-success);
}

.tag-warning {
  background: rgba(192, 125, 42, 0.12);
  color: var(--state-warning);
}

.tag-error {
  background: rgba(184, 66, 51, 0.1);
  color: var(--state-error);
}

.tag-default {
  background: var(--color-surface);
  color: var(--color-text-tertiary);
}

.tag-primary {
  background: var(--color-primary-50);
  color: var(--color-primary);
}

.action-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

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

.pagination-info {
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.pagination-buttons {
  display: flex;
  align-items: center;
  gap: 4px;
}

.page-btn {
  min-width: 32px;
  height: 32px;
  padding: 0 10px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--color-text-secondary);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.page-btn:hover:not(:disabled):not(.active) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.page-btn.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.page-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.image-card {
  background: var(--color-bg-card);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.3s;
  border: 1px solid var(--color-border-light);
}

.image-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-float);
}

.image-card-thumb {
  aspect-ratio: 4/3;
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.image-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-card-body {
  padding: 14px;
}

.image-card-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.image-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.image-card-size {
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.image-card-actions {
  display: flex;
  gap: 8px;
}

.image-card-actions .btn {
  flex: 1;
  justify-content: center;
  font-size: 12px;
  padding: 6px 8px;
}

.modal-mask {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: var(--color-bg-card);
  border-radius: 12px;
  width: 90%;
  max-width: 520px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-float);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.modal-close {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  color: var(--color-text-tertiary);
  transition: all 0.2s;
  cursor: pointer;
  font-size: 18px;
}

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

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

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border-light);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.form-item {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-label .required {
  color: var(--state-error);
  margin-right: 4px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  font-size: 14px;
  color: var(--color-text-primary);
  outline: none;
  transition: all 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 2px var(--color-primary-100);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
  font-family: inherit;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-row .form-item {
  flex: 1;
}

.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: 8px;
  padding: 40px;
  text-align: center;
  background: var(--color-bg);
  transition: all 0.2s;
  cursor: pointer;
}

.upload-zone:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-50);
}

.upload-zone-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.upload-zone-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.upload-zone-hint {
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.switch {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--color-surface);
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.2s;
}

.switch.active {
  background: var(--color-primary);
}

.switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  transition: all 0.2s;
}

.switch.active::after {
  left: 22px;
}

.toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 2000;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.toast-success {
  background: var(--state-success);
  color: white;
}

.toast-error {
  background: var(--state-error);
  color: white;
}

.toast-info {
  background: var(--state-info);
  color: white;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #F8F5F0 0%, #E8E1D5 100%);
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--color-bg-card);
  border-radius: 16px;
  box-shadow: var(--shadow-float);
  padding: 40px;
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: 16px;
}

.login-logo-text {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-primary);
  font-family: Georgia, 'Songti SC', serif;
}

.login-logo-sub {
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-top: 4px;
}

.login-form .form-item {
  margin-bottom: 20px;
}

.login-btn {
  width: 100%;
  height: 44px;
  font-size: 15px;
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--color-text-tertiary);
  font-size: 14px;
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 12px;
}

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

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

.empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-text {
  font-size: 14px;
}

.thumbnail-preview {
  width: 48px;
  height: 64px;
  border-radius: 6px;
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--color-primary);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

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