:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #131a2a;
  --bg-card: rgba(23, 32, 51, 0.75);
  --bg-hover: rgba(255, 255, 255, 0.04);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(56, 189, 248, 0.2);
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --primary: #38bdf8;
  --primary-hover: #0284c7;
  --purple: #a855f7;
  --green: #22c55e;
  --orange: #f59e0b;
  --red: #ef4444;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --shadow-card: 0 10px 30px -5px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.06);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    radial-gradient(at 0% 0%, rgba(56, 189, 248, 0.06) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.06) 0px, transparent 50%);
  background-attachment: fixed;
}

/* 玻璃拟态卡片 */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

/* 登录浮层 */
.login-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(11, 15, 25, 0.88);
  backdrop-filter: blur(12px);
  z-index: 1000;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  padding: 36px 32px;
  text-align: center;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--border-glow);
}

.login-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(168, 85, 247, 0.2));
  border: 1px solid var(--border-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--primary);
}

.login-header h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 6px;
}

.login-header p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

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

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 12.5px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 14px;
  outline: none;
  transition: all 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.error-msg {
  padding: 10px 14px;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
}

.login-footer {
  margin-top: 20px;
  font-size: 13px;
}

.back-link {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.back-link:hover {
  color: var(--primary);
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #0ea5e9);
  color: #fff;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #0284c7);
}

.btn-primary-sm {
  padding: 6px 14px;
  font-size: 12.5px;
  background: #0ea5e9;
  color: #fff;
  border-radius: 6px;
  border: none;
  cursor: pointer;
}

.btn-primary-sm:hover {
  background: #0284c7;
}

.btn-outline-sm {
  padding: 6px 13px;
  font-size: 12.5px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
}

.btn-outline-sm:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.16);
}

.btn-danger-sm {
  padding: 6px 13px;
  font-size: 12.5px;
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 6px;
  cursor: pointer;
}

.btn-danger-sm:hover {
  background: rgba(239, 68, 68, 0.2);
}

.btn-success-sm {
  padding: 6px 13px;
  font-size: 12.5px;
  background: rgba(34, 197, 94, 0.12);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 6px;
  cursor: pointer;
}

.btn-success-sm:hover {
  background: rgba(34, 197, 94, 0.2);
}

.btn-block {
  width: 100%;
}

/* 后台主框架 */
.admin-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 20px 24px 60px;
}

/* 顶部导航 */
.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  margin-bottom: 18px;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.25), rgba(168, 85, 247, 0.25));
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary);
}

.brand-text h1 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.3px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  font-size: 11px;
  border-radius: 4px;
  font-weight: 500;
}

.badge-admin {
  background: rgba(168, 85, 247, 0.15);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-user-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-main);
}

.admin-user-pill i {
  color: var(--primary);
}

/* 选项卡导航 */
.admin-tabs-nav {
  display: flex;
  gap: 8px;
  padding: 8px 12px;
  margin-bottom: 22px;
  overflow-x: auto;
}

.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 13.5px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-tab:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.nav-tab.active {
  background: rgba(56, 189, 248, 0.12);
  color: var(--primary);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.tab-badge {
  padding: 1px 6px;
  font-size: 11px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}

/* 选项卡主内容区 */
.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.25s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* KPI 网格 */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 22px;
}

.kpi-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
}

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.kpi-icon.blue { background: rgba(56, 189, 248, 0.15); color: var(--primary); }
.kpi-icon.purple { background: rgba(168, 85, 247, 0.15); color: var(--purple); }
.kpi-icon.green { background: rgba(34, 197, 94, 0.15); color: var(--green); }
.kpi-icon.orange { background: rgba(245, 158, 11, 0.15); color: var(--orange); }

.kpi-label {
  font-size: 12.5px;
  color: var(--text-muted);
}

.kpi-num {
  font-size: 24px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-main);
  line-height: 1.2;
  margin: 2px 0;
}

.kpi-sub {
  font-size: 11.5px;
  color: var(--text-dim);
}

.highlight-orange {
  color: var(--orange);
}

/* 概览图表网格 */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.panel-card {
  padding: 20px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.chart-container {
  width: 100%;
  height: 320px;
}

/* 数据表格 */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.admin-table th {
  padding: 10px 14px;
  color: var(--text-muted);
  font-weight: 500;
  border-bottom: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.02);
  white-space: nowrap;
}

.admin-table td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  white-space: nowrap;
}

.admin-table tbody tr:hover {
  background: var(--bg-hover);
}

.mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
}

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

/* 状态标签 */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 500;
}

.status-active { background: rgba(34, 197, 94, 0.15); color: #4ade80; border: 1px solid rgba(34, 197, 94, 0.25); }
.status-banned { background: rgba(239, 68, 68, 0.15); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.25); }
.status-pending { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.25); }
.status-approved { background: rgba(34, 197, 94, 0.15); color: #4ade80; border: 1px solid rgba(34, 197, 94, 0.25); }
.status-rejected { background: rgba(148, 163, 184, 0.15); color: #94a3b8; border: 1px solid rgba(148, 163, 184, 0.25); }

/* 搜索与工具栏 */
.search-header {
  flex-wrap: wrap;
  gap: 12px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  min-width: 240px;
}

.search-box i {
  color: var(--text-dim);
}

.search-box input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 13px;
  width: 100%;
}

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

/* 分页条 */
.pagination-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.page-info {
  font-size: 12.5px;
  color: var(--text-muted);
}

.page-btns {
  display: flex;
  align-items: center;
  gap: 8px;
}

.current-page-num {
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}

/* 认领卡片列表 */
.title-with-tabs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  flex-wrap: wrap;
  gap: 12px;
}

.claims-filter-buttons {
  display: flex;
  gap: 6px;
}

.claim-filter-btn {
  padding: 4px 10px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
}

.claim-filter-btn.active {
  background: rgba(56, 189, 248, 0.15);
  color: var(--primary);
  border-color: rgba(56, 189, 248, 0.3);
}

.claims-list-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 14px;
}

.claim-card {
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  transition: all 0.2s ease;
}

.claim-card:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.14);
}

.claim-card-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.claim-addon-logo {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--border-color);
}

.claim-info h4 {
  font-size: 15px;
  margin-bottom: 4px;
  color: var(--text-main);
}

.claim-meta {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
  margin-bottom: 6px;
}

.claim-proof {
  font-size: 12.5px;
  color: #cbd5e1;
  background: rgba(15, 23, 42, 0.6);
  padding: 6px 10px;
  border-radius: 6px;
  border-left: 3px solid var(--primary);
}

.claim-card-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-dim);
  font-size: 13.5px;
}

/* 模态框 */
.admin-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(11, 15, 25, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1100;
  padding: 20px;
}

.modal-card {
  width: 100%;
  max-width: 420px;
  padding: 24px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 16px;
  cursor: pointer;
}

.btn-close:hover {
  color: var(--text-main);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

/* 移动端适配 */
@media (max-width: 992px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .overview-grid {
    grid-template-columns: 1fr;
  }
  .claim-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .claim-card-right {
    width: 100%;
    justify-content: flex-end;
  }
}

@media (max-width: 600px) {
  .kpi-grid {
    grid-template-columns: 1fr;
  }
  .admin-header {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
  .header-right {
    width: 100%;
    justify-content: space-between;
  }
}