/* 珑世艺术工坊 · 管理后台样式 */
:root {
  --primary: #9D2933;
  --primary-dark: #7a1f27;
  --gold: #C9A962;
  --gold-light: #D4BC7E;
  --bg-dark: #1a1613;
  --bg-sidebar: #231d19;
  --bg-main: #f7f5f2;
  --text-primary: #2c2520;
  --text-secondary: #7a6e63;
  --text-light: #b8a99a;
  --border: #e8e2db;
  --success: #4a8c5f;
  --warning: #c98b3a;
  --danger: #c94a4a;
}

* { 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;
  color: var(--text-primary);
  background: var(--bg-main);
  -webkit-font-smoothing: antialiased;
}

/* ========== 登录页 ========== */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a1613 0%, #2d2420 50%, #1a1613 100%);
  position: relative;
}

.login-container::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at center, rgba(201,169,98,0.08) 0%, transparent 70%);
}

.login-box {
  width: 400px;
  padding: 48px 40px;
  background: rgba(35, 29, 25, 0.95);
  border: 1px solid rgba(201, 169, 98, 0.2);
  border-radius: 4px;
  position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.login-brand {
  text-align: center;
  margin-bottom: 36px;
}

.brand-mark {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: var(--primary);
  color: var(--gold-light);
  font-size: 28px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-family: "Songti SC", "SimSun", serif;
  box-shadow: 0 4px 20px rgba(157, 41, 51, 0.4);
}

.login-brand h1 {
  font-size: 20px;
  color: var(--gold-light);
  font-weight: 500;
  letter-spacing: 4px;
  margin-bottom: 6px;
}

.login-brand p {
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 2px;
}

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

.login-form label {
  display: block;
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.login-form input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(0,0,0,0.2);
  border: 1px solid rgba(201, 169, 98, 0.2);
  border-radius: 3px;
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.login-form input:focus {
  border-color: var(--gold);
}

.login-error {
  color: #e87878;
  font-size: 12px;
  margin-bottom: 12px;
  min-height: 18px;
}

.btn-primary {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 3px;
  font-size: 14px;
  letter-spacing: 4px;
  cursor: pointer;
  transition: background 0.2s;
}

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

.login-footer {
  text-align: center;
  margin-top: 28px;
  font-size: 11px;
  color: rgba(184, 169, 154, 0.4);
  letter-spacing: 1px;
}

/* ========== 后台布局 ========== */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: var(--bg-sidebar);
  color: var(--text-light);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-brand {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(201, 169, 98, 0.1);
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: var(--gold-light);
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-family: "Songti SC", serif;
}

.brand-text {
  color: var(--gold-light);
  font-size: 15px;
  letter-spacing: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 0;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  color: var(--text-light);
  text-decoration: none;
  font-size: 13px;
  transition: all 0.2s;
  position: relative;
  gap: 10px;
}

.nav-item:hover {
  background: rgba(201, 169, 98, 0.06);
  color: var(--gold-light);
}

.nav-item.active {
  background: rgba(157, 41, 51, 0.15);
  color: var(--gold-light);
  border-left: 3px solid var(--primary);
  padding-left: 17px;
}

.nav-icon {
  font-size: 14px;
  width: 20px;
  text-align: center;
}

.badge {
  margin-left: auto;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(201, 169, 98, 0.1);
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#admin-user {
  color: var(--gold);
}

.logout-link {
  color: var(--text-light);
  text-decoration: none;
  font-size: 12px;
}

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

/* ========== 主内容区 ========== */
.main-content {
  flex: 1;
  padding: 28px 32px;
  overflow-y: auto;
}

.view-header {
  margin-bottom: 24px;
}

.view-header h2 {
  font-size: 22px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.view-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

/* 统计卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: #fff;
  border-radius: 6px;
  padding: 20px;
  border: 1px solid var(--border);
  transition: box-shadow 0.2s;
}

.stat-card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.stat-card.accent {
  background: linear-gradient(135deg, #9D2933 0%, #7a1f27 100%);
  border-color: var(--primary);
}

.stat-card.accent .stat-label,
.stat-card.accent .stat-sub {
  color: rgba(255,255,255,0.7);
}

.stat-card.accent .stat-value {
  color: var(--gold-light);
}

.stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.stat-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  font-family: "SF Pro Display", -apple-system, sans-serif;
}

.stat-sub {
  font-size: 12px;
  color: var(--text-secondary);
}

.stat-sub span {
  font-weight: 500;
  color: var(--text-primary);
}

/* 面板 */
.dashboard-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.panel {
  background: #fff;
  border-radius: 6px;
  border: 1px solid var(--border);
}

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

.panel-header h3 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.panel-tag {
  font-size: 11px;
  color: var(--text-secondary);
  background: var(--bg-main);
  padding: 3px 8px;
  border-radius: 3px;
}

.panel-body {
  padding: 8px 0;
}

/* 数据表格 */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  text-align: left;
  padding: 10px 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-main);
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 12px 20px;
  font-size: 13px;
  border-bottom: 1px solid #f0ebe5;
  color: var(--text-primary);
}

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

.data-table tr:hover td {
  background: #faf8f5;
}

/* 设备分布 */
.device-stats {
  padding: 12px 20px;
}

.device-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.device-item:last-child {
  margin-bottom: 0;
}

.device-label {
  width: 60px;
  font-size: 13px;
  color: var(--text-secondary);
}

.device-bar {
  flex: 1;
  height: 8px;
  background: var(--bg-main);
  border-radius: 4px;
  overflow: hidden;
}

.device-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s ease;
}

.device-fill.desktop { background: var(--primary); }
.device-fill.mobile { background: var(--gold); }

.device-count {
  width: 50px;
  text-align: right;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

/* 累计数据 */
.total-stats {
  display: flex;
  padding: 20px;
  gap: 24px;
}

.total-item {
  text-align: center;
  flex: 1;
}

.total-value {
  font-size: 32px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
  font-family: "SF Pro Display", sans-serif;
}

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

/* 筛选栏 */
.filter-bar {
  margin-bottom: 16px;
}

.filter-tabs {
  display: flex;
  gap: 4px;
}

.filter-tab {
  padding: 8px 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.filter-tab:hover {
  border-color: var(--gold);
  color: var(--text-primary);
}

.filter-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.filter-tab .dot {
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
}

.filter-tab.active .dot {
  background: var(--gold);
}

/* 留言状态标签 */
.status-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  letter-spacing: 1px;
}

.status-0 { background: #fef2f2; color: var(--danger); }
.status-1 { background: #fff7ed; color: var(--warning); }
.status-2 { background: #f0f9f4; color: var(--success); }
.status-3 { background: #f5f5f5; color: #888; }

/* 操作按钮 */
.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 3px;
  cursor: pointer;
  color: var(--text-secondary);
  margin-right: 4px;
  transition: all 0.2s;
}

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

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

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

/* 空状态 */
.empty-state {
  padding: 40px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

/* 留言内容截断 */
.message-content {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 响应式 */
@media (max-width: 1200px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-row { grid-template-columns: 1fr; }
}