/* ============================================================
   Tongji - 多网站统计分析系统 样式表
   ============================================================ */

/* === CSS Variables === */
:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface-2: #212d40;
  --border: #2a3a52;
  --border-light: #334466;
  --primary: #4f9eed;
  --primary-hover: #3d8be0;
  --primary-dim: rgba(79, 158, 237, 0.15);
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.15);
  --warning: #ffb020;
  --warning-dim: rgba(255, 176, 32, 0.15);
  --danger: #ff5c5c;
  --danger-dim: rgba(255, 92, 92, 0.15);
  --red: #ff5c5c;
  --red-dim: rgba(255, 92, 92, 0.08);
  --green: #00d4aa;
  --green-dim: rgba(0, 212, 170, 0.08);
  --purple: #a78bfa;
  --purple-dim: rgba(167, 139, 250, 0.15);
  --text: #e8edf5;
  --text-2: #8899aa;
  --text-3: #556677;
  --radius: 8px;
  --radius-sm: 4px;
  --radius-lg: 12px;
  --radius-pill: 20px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --transition: 150ms ease;
}

/* === Reset & Base === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 14px;
}

body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  transition: all var(--transition);
}

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

::selection {
  background: var(--primary);
  color: #fff;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* === Layout === */
.layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 240px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform 300ms ease;
}

.sidebar-logo {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
}

.sidebar-logo .logo-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

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

.nav-section {
  margin-bottom: 24px;
}

.nav-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  padding: 0 8px;
  margin-bottom: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--text-2);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: 2px;
}

.nav-item:hover {
  background: var(--surface-2);
  color: var(--text);
}

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

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.nav-item .badge {
  margin-left: auto;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}

.nav-item .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-left: auto;
}

.status-dot.online { background: var(--accent); }
.status-dot.paused { background: var(--warning); }
.status-dot.error { background: var(--danger); }

/* Main content */
.main {
  flex: 1;
  margin-left: 240px;
  min-height: 100vh;
}

/* Header */
.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-time {
  color: var(--text-2);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

/* Page container */
.page {
  padding: 32px;
  max-width: 1400px;
  margin: 0 auto;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.page-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

.page-desc {
  color: var(--text-2);
  margin-top: 4px;
  font-size: 14px;
}

/* === Cards === */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition);
}

.card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-sm);
}

.card-sm { padding: 16px; }
.card-lg { padding: 32px; }

/* Stat cards grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  animation: fadeInUp 300ms ease-out both;
}

.stat-card:nth-child(1) { animation-delay: 0ms; }
.stat-card:nth-child(2) { animation-delay: 50ms; }
.stat-card:nth-child(3) { animation-delay: 100ms; }
.stat-card:nth-child(4) { animation-delay: 150ms; }

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

.stat-icon.blue { background: var(--primary-dim); color: var(--primary); }
.stat-icon.green { background: var(--accent-dim); color: var(--accent); }
.stat-icon.yellow { background: var(--warning-dim); color: var(--warning); }
.stat-icon.red { background: var(--danger-dim); color: var(--danger); }
.stat-icon.purple { background: var(--purple-dim); color: var(--purple); }

.stat-info { flex: 1; }

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 13px;
  color: var(--text-2);
  margin-top: 4px;
}

.stat-trend {
  font-size: 12px;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-trend.up { color: var(--accent); }
.stat-trend.down { color: var(--danger); }
.stat-trend.neutral { color: var(--text-3); }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  white-space: nowrap;
}

.btn svg { width: 16px; height: 16px; }

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(79, 158, 237, 0.3); }

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border); }

.btn-danger {
  background: var(--danger-dim);
  color: var(--danger);
  border: 1px solid var(--danger);
}
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--text-2);
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius);
}

.btn-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* === Form Elements === */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-dim);
}

.form-input::placeholder { color: var(--text-3); }

.form-input.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px var(--danger-dim);
}

.form-hint {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 6px;
}

.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 6px;
}

/* === Tables === */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
}

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

.data-table thead {
  border-bottom: 1px solid var(--border);
}

.data-table th {
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-3);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

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

/* === Code Box === */
.code-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  font-family: "JetBrains Mono", "Consolas", monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-2);
  position: relative;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.code-box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.code-box-title {
  font-size: 12px;
  color: var(--text-3);
  font-family: monospace;
}

/* === Charts === */
.chart-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

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

.chart-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 3px;
}

.chart-tab {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-2);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  background: transparent;
}

.chart-tab.active {
  background: var(--surface-2);
  color: var(--text);
}

.chart-area {
  position: relative;
  height: 300px;
}

/* SVG Chart */
.chart-svg {
  width: 100%;
  height: 100%;
}

.chart-grid-line {
  stroke: var(--border);
  stroke-width: 1;
}

.chart-axis-label {
  fill: var(--text-3);
  font-size: 11px;
  font-family: "JetBrains Mono", monospace;
}

.chart-line {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-line-pv { stroke: var(--primary); }
.chart-line-uv { stroke: var(--accent); }
.chart-line-ip { stroke: var(--warning); }

.chart-area-fill {
  opacity: 0.1;
}

.chart-dot {
  cursor: pointer;
  transition: r 150ms ease;
}

.chart-tooltip {
  position: absolute;
  background: var(--surface-2);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 13px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 150ms ease;
  z-index: 10;
  box-shadow: var(--shadow);
  min-width: 120px;
}

.chart-tooltip.visible { opacity: 1; }

.chart-tooltip-date {
  color: var(--text-3);
  font-size: 12px;
  margin-bottom: 6px;
}

.chart-tooltip-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
  color: var(--text);
}

.chart-tooltip-row:last-child { margin-bottom: 0; }

.chart-tooltip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* === Grid Layouts === */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* === Badge & Tags === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
}

.badge-blue { background: var(--primary-dim); color: var(--primary); }
.badge-green { background: var(--accent-dim); color: var(--accent); }
.badge-yellow { background: var(--warning-dim); color: var(--warning); }
.badge-red { background: var(--danger-dim); color: var(--danger); }
.badge-gray { background: var(--surface-2); color: var(--text-2); }
.badge-purple { background: var(--purple-dim); color: var(--purple); }

/* === Device/Source Cards === */
.device-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.device-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
}

.device-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
}

.device-card.active {
  border-color: var(--primary);
  background: var(--primary-dim);
}

.device-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.device-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 4px;
}

.device-value {
  font-size: 12px;
  color: var(--text-2);
}

/* === Source Breakdown === */
.source-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.source-item:last-child { border-bottom: none; }

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

.source-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 600ms ease;
}

.source-bar.direct { background: var(--primary); }
.source-bar.search { background: var(--accent); }
.source-bar.link { background: var(--purple); }
.source-bar.social { background: var(--warning); }
.source-bar.other { background: var(--text-3); }

.source-label {
  font-size: 13px;
  color: var(--text-2);
  min-width: 80px;
}

.source-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  min-width: 60px;
  text-align: right;
}

/* === Page Ranking === */
.page-rank-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.page-rank-item:last-child { border-bottom: none; }

.page-rank-num {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  background: var(--surface-2);
  color: var(--text-3);
  flex-shrink: 0;
}

.page-rank-num.top { background: var(--primary-dim); color: var(--primary); }

.page-rank-info { flex: 1; min-width: 0; }

.page-rank-url {
  font-size: 13px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-rank-pv {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 2px;
}

/* === Modal === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 200ms ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 480px;
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform 200ms ease;
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

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

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

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  color: var(--text-2);
  background: transparent;
  transition: all var(--transition);
}

.modal-close:hover { background: var(--surface-2); color: var(--text); }

.modal-body {
  padding: 24px;
}

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

/* === Toast === */
.toast-container {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  animation: slideIn 300ms ease;
  min-width: 280px;
  max-width: 400px;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast-icon { width: 18px; height: 18px; flex-shrink: 0; }
.toast.success .toast-icon { color: var(--accent); }
.toast.error .toast-icon { color: var(--danger); }
.toast.info .toast-icon { color: var(--primary); }
.toast.warning .toast-icon { color: var(--warning); }

.toast-msg {
  flex: 1;
  font-size: 14px;
  color: var(--text);
}

/* === Search & Filter === */
.search-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.search-input-wrap {
  flex: 1;
  position: relative;
}

.search-input-wrap svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-3);
}

.search-input {
  width: 100%;
  padding: 10px 14px 10px 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  transition: border-color var(--transition);
}

.search-input:focus { border-color: var(--primary); }

.filter-select {
  padding: 10px 36px 10px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23556677' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  cursor: pointer;
}

/* === Login Page === */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 20px;
}

.login-card {
  width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  animation: fadeInUp 400ms ease;
}

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

.login-logo .logo-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}

.login-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  text-align: center;
}

.login-subtitle {
  font-size: 14px;
  color: var(--text-2);
  text-align: center;
  margin-top: 8px;
}

/* === Site Cards === */
.site-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all var(--transition);
  cursor: pointer;
}

.site-card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.site-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}

.site-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.site-domain {
  font-size: 12px;
  color: var(--text-3);
  font-family: "JetBrains Mono", monospace;
}

.site-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

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

.site-stat-val {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.site-stat-label {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 2px;
}

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

/* === Toggle Switch === */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.toggle input { display: none; }

.toggle-slider {
  width: 40px;
  height: 22px;
  background: var(--border);
  border-radius: 11px;
  transition: background var(--transition);
  position: relative;
}

.toggle-slider::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform var(--transition);
}

.toggle input:checked + .toggle-slider {
  background: var(--accent);
}

.toggle input:checked + .toggle-slider::after {
  transform: translateX(18px);
}

/* === Empty State === */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-3);
}

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

.empty-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 8px;
}

.empty-desc {
  font-size: 14px;
  margin-bottom: 24px;
}

/* === Pagination === */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 24px;
}

.page-btn {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--text-2);
  background: transparent;
  border: 1px solid transparent;
  transition: all var(--transition);
}

.page-btn:hover {
  background: var(--surface-2);
  color: var(--text);
}

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

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* === Loading Skeleton === */
.skeleton {
  background: linear-gradient(90deg, var(--surface-2) 25%, var(--border) 50%, var(--surface-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* === Tabs === */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.tab {
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--transition);
  background: transparent;
  border-top: none;
  border-left: none;
  border-right: none;
}

.tab:hover { color: var(--text); }

.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* === Animations === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* === Utilities === */
.text-primary { color: var(--text); }
.text-secondary { color: var(--text-2); }
.text-muted { color: var(--text-3); }
.text-blue { color: var(--primary); }
.text-green { color: var(--accent); }
.text-yellow { color: var(--warning); }
.text-red { color: var(--danger); }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }

.divider {
  height: 1px;
  background: var(--border);
  margin: 24px 0;
}

/* === Realtime Bar === */
.realtime-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.realtime-dot {
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.realtime-text {
  font-size: 14px;
  color: var(--text-2);
}

.realtime-count {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.realtime-unit {
  font-size: 14px;
  color: var(--text-2);
  margin-left: 4px;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main {
    margin-left: 0;
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .page { padding: 20px; }
  .grid-2, .grid-3, .grid-4, .device-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .modal { width: 95vw; }
  .login-card { width: 100%; padding: 28px; }
}

/* === Mobile Menu Toggle === */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  color: var(--text-2);
  background: transparent;
}

@media (max-width: 1024px) {
  .mobile-menu-btn { display: flex; }
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}

@media (max-width: 1024px) {
  .sidebar-overlay.active { display: block; }
}