/* ===== 全局重置与变量 ===== */
:root {
  --primary: #1a73e8;
  --primary-hover: #1557b0;
  --primary-light: #e8f0fe;
  --success: #34a853;
  --warning: #fbbc04;
  --danger: #ea4335;
  --info: #4285f4;
  --bg: #f0f2f5;
  --bg-card: #ffffff;
  --text: #1f1f1f;
  --text-secondary: #5f6368;
  --text-light: #9aa0a6;
  --border: #dadce0;
  --border-light: #e8eaed;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);
  --radius: 8px;
  --radius-sm: 4px;
  --radius-lg: 12px;
  --sidebar-width: 240px;
  --header-height: 60px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html,
body {
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  height: 100%;
  line-height: 1.5;
}
a {
  text-decoration: none;
  color: var(--primary);
}
a:hover {
  color: var(--primary-hover);
}
ul,
ol {
  list-style: none;
}
img {
  max-width: 100%;
  display: block;
}
input,
select,
textarea,
button {
  font-family: inherit;
  font-size: inherit;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}

.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.flex-wrap {
  flex-wrap: wrap;
}
.flex-1 {
  flex: 1;
}
.items-center {
  align-items: center;
}
.items-start {
  align-items: flex-start;
}
.items-end {
  align-items: flex-end;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.justify-end {
  justify-content: flex-end;
}
.gap-4 {
  gap: 4px;
}
.gap-8 {
  gap: 8px;
}
.gap-12 {
  gap: 12px;
}
.gap-16 {
  gap: 16px;
}
.gap-20 {
  gap: 20px;
}
.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}
.w-full {
  width: 100%;
}
.h-full {
  height: 100%;
}
.relative {
  position: relative;
}
.hidden {
  display: none !important;
}
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
  user-select: none;
}
.btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}
.btn:active {
  transform: scale(0.97);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #fff;
}
.btn-success {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}
.btn-success:hover {
  background: #2d8f47;
  color: #fff;
}
.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover {
  background: #d33426;
  color: #fff;
}
.btn-warning {
  background: var(--warning);
  color: #fff;
  border-color: var(--warning);
}
.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
}
.btn-lg {
  padding: 12px 28px;
  font-size: 16px;
}
.btn-text {
  border: none;
  background: transparent;
  color: var(--primary);
  padding: 4px 8px;
}
.btn-text:hover {
  background: var(--primary-light);
}
.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 50%;
}

.form-group {
  margin-bottom: 16px;
}
.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text);
  font-size: 14px;
}
.form-label .required {
  color: var(--danger);
  margin-left: 2px;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text);
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
  outline: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
}
.form-textarea {
  resize: vertical;
  min-height: 80px;
}
.form-hint {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 4px;
}
.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 4px;
}
.form-row {
  display: flex;
  gap: 16px;
}
.form-row > * {
  flex: 1;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-header h3 {
  font-size: 16px;
  font-weight: 600;
}
.card-body {
  padding: 20px;
}
.card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.table-container {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
}
table th,
table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
  font-size: 14px;
}
table th {
  background: #f8f9fa;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}
table tr:hover td {
  background: #f8f9fa;
}
table .actions {
  display: flex;
  gap: 4px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}
.tag-success {
  background: #e6f4ea;
  color: #1e7e34;
}
.tag-warning {
  background: #fef7e0;
  color: #e37400;
}
.tag-danger {
  background: #fce8e6;
  color: #c5221f;
}
.tag-info {
  background: #e8f0fe;
  color: #1a73e8;
}
.tag-default {
  background: #f1f3f4;
  color: #5f6368;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 16px 0;
}
.pagination .page-item {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
  background: var(--bg-card);
  transition: all 0.2s;
}
.pagination .page-item:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.pagination .page-item.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.pagination .page-item.disabled {
  color: var(--text-light);
  cursor: not-allowed;
  opacity: 0.5;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s;
}
.modal-overlay.show {
  display: flex;
}
.modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 600px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  animation: slideUp 0.25s;
}
.modal-sm {
  max-width: 420px;
}
.modal-lg {
  max-width: 800px;
}
.modal-xl {
  max-width: 1000px;
}
.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-header h3 {
  font-size: 18px;
  font-weight: 600;
}
.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-close:hover {
  background: #f1f3f4;
  color: var(--text);
}
.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}
.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--primary);
  animation: slideInRight 0.3s;
  min-width: 280px;
  max-width: 400px;
}
.toast-item.success {
  border-left-color: var(--success);
}
.toast-item.error {
  border-left-color: var(--danger);
}
.toast-item.warning {
  border-left-color: var(--warning);
}
.toast-item .toast-msg {
  flex: 1;
  font-size: 14px;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-light);
}
.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}
.empty-state .empty-text {
  font-size: 16px;
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.spinner-sm {
  width: 18px;
  height: 18px;
  border-width: 2px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}
.upload-area:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}
.upload-area .upload-icon {
  font-size: 36px;
  color: var(--text-light);
  margin-bottom: 8px;
}
.upload-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.upload-preview-item {
  position: relative;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-light);
}
.upload-preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.upload-preview-item .remove {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 20px;
  height: 20px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 12px;
}

.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  display: inline-block;
}
.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.toggle-slider {
  position: absolute;
  inset: 0;
  background: #ccc;
  border-radius: 12px;
  cursor: pointer;
  transition: 0.3s;
}
.toggle-slider::before {
  content: "";
  position: absolute;
  left: 2px;
  bottom: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: 0.3s;
}
.toggle-switch input:checked + .toggle-slider {
  background: var(--primary);
}
.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
}