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

:root {
  --color-primary: #1677ff;
  --color-primary-hover: #4096ff;
  --color-primary-active: #0958d9;
  --color-success: #52c41a;
  --color-success-hover: #73d13d;
  --color-warning: #faad14;
  --color-warning-hover: #ffc53d;
  --color-error: #ff4d4f;
  --color-error-hover: #ff7875;
  --color-text: #333333;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  --color-border: #e5e7eb;
  --color-border-light: #f0f0f0;
  --color-bg: #f5f7fa;
  --color-bg-white: #ffffff;
  --color-bg-hover: #fafafa;
  --color-shadow: rgba(0, 0, 0, 0.08);
  --color-shadow-sm: rgba(0, 0, 0, 0.04);
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
}

html, body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

input,
button,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  user-select: none;
}

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

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

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

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

.btn-danger {
  background-color: var(--color-error);
  border-color: var(--color-error);
  color: #fff;
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--color-error-hover);
  border-color: var(--color-error-hover);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

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

.btn-block {
  display: flex;
  width: 100%;
  padding: 10px 16px;
}

.btn-sm {
  padding: 4px 12px;
  font-size: 13px;
}

.card {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 2px var(--color-shadow-sm);
  border: 1px solid var(--color-border-light);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border-light);
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-body {
  padding: 20px;
}

.card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg-hover);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

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

.table thead {
  background-color: #fafafa;
}

.table thead th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: middle;
}

.table tbody tr:nth-child(even) {
  background-color: #fafafa;
}

.table tbody tr:hover {
  background-color: #f0f7ff;
}

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

.table .empty-row td {
  text-align: center;
  padding: 60px 16px;
  color: var(--color-text-muted);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 7px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text);
  background-color: var(--color-bg-white);
  transition: all 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(22, 119, 255, 0.1);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  background-color: var(--color-bg-hover);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 14px;
  padding-right: 32px;
  color: var(--color-text);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: var(--color-text);
  font-size: 14px;
}

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

.form-row {
  display: flex;
  gap: 12px;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 10px;
  line-height: 1.5;
}

.badge-success {
  background-color: rgba(82, 196, 26, 0.1);
  color: var(--color-success);
}

.badge-warning {
  background-color: rgba(250, 173, 20, 0.1);
  color: var(--color-warning);
}

.badge-danger {
  background-color: rgba(255, 77, 79, 0.1);
  color: var(--color-error);
}

.badge-info {
  background-color: rgba(22, 119, 255, 0.1);
  color: var(--color-primary);
}

.badge-default {
  background-color: rgba(0, 0, 0, 0.05);
  color: var(--color-text-secondary);
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  padding: 16px 0;
}

.pagination .page-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-white);
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 13px;
}

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

.pagination .page-item.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.pagination .page-item.disabled {
  color: var(--color-text-muted);
  cursor: not-allowed;
  opacity: 0.6;
}

.pagination .page-info {
  margin-right: 12px;
  color: var(--color-text-secondary);
  font-size: 13px;
}

.flex {
  display: flex;
}

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

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-end {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

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

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

.text-muted {
  color: var(--color-text-muted);
}

.text-secondary {
  color: var(--color-text-secondary);
}

.text-success {
  color: var(--color-success);
}

.text-warning {
  color: var(--color-warning);
}

.text-danger {
  color: var(--color-error);
}

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

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

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

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

.font-medium {
  font-weight: 500;
}

.font-semibold {
  font-weight: 600;
}

.font-bold {
  font-weight: 700;
}

.text-sm {
  font-size: 13px;
}

.text-lg {
  font-size: 16px;
}

.text-xl {
  font-size: 18px;
}

.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mt-5 { margin-top: 20px; }
.mt-6 { margin-top: 24px; }

.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mb-5 { margin-bottom: 20px; }
.mb-6 { margin-bottom: 24px; }

.mr-1 { margin-right: 4px; }
.mr-2 { margin-right: 8px; }
.mr-3 { margin-right: 12px; }
.mr-4 { margin-right: 16px; }

.ml-1 { margin-left: 4px; }
.ml-2 { margin-left: 8px; }
.ml-3 { margin-left: 12px; }
.ml-4 { margin-left: 16px; }

.p-1 { padding: 4px; }
.p-2 { padding: 8px; }
.p-3 { padding: 12px; }
.p-4 { padding: 16px; }
.p-5 { padding: 20px; }

.px-2 { padding-left: 8px; padding-right: 8px; }
.px-3 { padding-left: 12px; padding-right: 12px; }
.px-4 { padding-left: 16px; padding-right: 16px; }

.py-2 { padding-top: 8px; padding-bottom: 8px; }
.py-3 { padding-top: 12px; padding-bottom: 12px; }
.py-4 { padding-top: 16px; padding-bottom: 16px; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.overflow-auto {
  overflow: auto;
}

.overflow-hidden {
  overflow: hidden;
}

.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.cursor-pointer {
  cursor: pointer;
}

.cursor-default {
  cursor: default;
}

.opacity-50 {
  opacity: 0.5;
}

.hidden {
  display: none !important;
}

.block {
  display: block;
}

.inline-block {
  display: inline-block;
}