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

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface2: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --green: #3fb950;
  --orange: #d29922;
  --red: #f85149;
  --purple: #bc8cff;
  --cyan: #39d2c0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header h1 {
  font-size: 18px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.header h1 .logo {
  width: 24px;
  height: 24px;
  background: var(--accent);
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

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

.live-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.live-dot.disconnected { background: var(--red); animation: none; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.live-label {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Period Filter */
.period-filter {
  display: flex;
  gap: 4px;
  background: var(--bg);
  border-radius: 8px;
  padding: 3px;
}

.period-btn {
  padding: 6px 12px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}

.period-btn:hover { color: var(--text); }
.period-btn.active { background: var(--accent); color: #fff; }

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

.tab-btn {
  padding: 12px 20px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 14px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Content */
.content {
  padding: 24px;
  max-width: 1400px;
  margin: 0 auto;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.kpi-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.kpi-value {
  font-size: 28px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.kpi-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.kpi-card:nth-child(1) .kpi-value { color: var(--accent); }
.kpi-card:nth-child(2) .kpi-value { color: var(--green); }
.kpi-card:nth-child(3) .kpi-value { color: var(--purple); }
.kpi-card:nth-child(4) .kpi-value { color: var(--orange); }

/* Detail KPI cards */
.kpi-detail-grid { margin-bottom: 24px; }
.kpi-detail .kpi-value { font-size: 22px; }
.kpi-detail-input .kpi-value { color: var(--accent); }
.kpi-detail-output .kpi-value { color: var(--green); }
.kpi-detail-cache-read .kpi-value { color: var(--purple); }
.kpi-detail-cache-create .kpi-value { color: var(--orange); }

/* Table sort indicators */
.data-table th.sort-asc::after { content: ' \u25B2'; font-size: 9px; }
.data-table th.sort-desc::after { content: ' \u25BC'; font-size: 9px; }

/* Active Sessions */
.active-sessions {
  background: var(--surface);
  border: 1px solid var(--green);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 16px;
}

.active-sessions-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.active-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.active-count {
  background: var(--green);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

.active-sessions-grid {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.active-session-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  min-width: 220px;
  flex: 1;
  max-width: 350px;
}

.active-session-project {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.active-session-meta {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.active-session-ago {
  font-size: 11px;
  color: var(--green);
  margin-top: 4px;
}

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

.chart-grid.full { grid-template-columns: 1fr; }

.chart-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.chart-box h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-muted);
}

.chart-container {
  position: relative;
  height: 280px;
}

.chart-container.small { height: 220px; }

/* Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  padding: 10px 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.data-table th:hover { color: var(--text); }

.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}

.data-table tr:hover td { background: var(--surface2); }

.data-table .num { text-align: right; }

/* Filter bar for sessions */
.filter-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.filter-bar select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
}

/* Token format */
.token-breakdown {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Scrollable table wrapper */
.table-wrapper {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.table-wrapper .data-table th:first-child,
.table-wrapper .data-table td:first-child {
  padding-left: 16px;
}

/* Responsive */
@media (max-width: 900px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .chart-grid { grid-template-columns: 1fr; }
  .header { flex-direction: column; gap: 12px; }
}

@media (max-width: 600px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .content { padding: 16px; }
  .tabs { overflow-x: auto; }
}

/* Rebuild button */
.rebuild-btn {
  padding: 6px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 12px;
  border-radius: 6px;
  cursor: pointer;
}

.rebuild-btn:hover { color: var(--text); border-color: var(--accent); }

/* Language Switcher */
.lang-switch {
  display: flex;
  gap: 2px;
  background: var(--bg);
  border-radius: 6px;
  padding: 2px;
}

.lang-btn {
  padding: 4px 8px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
  letter-spacing: 0.5px;
}

.lang-btn:hover { color: var(--text); }
.lang-btn.active { background: var(--accent); color: #fff; }

/* Stats Banner (official Claude totals) */
.stats-banner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 24px;
}

.stats-banner-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.stats-banner-items {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.stats-item {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.stats-item-label {
  font-size: 13px;
  color: var(--text-muted);
}

.stats-item-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

/* CSS-only Tooltips */
[data-tooltip] {
  position: relative;
  cursor: help;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
  line-height: 1.4;
  white-space: normal;
  width: max-content;
  max-width: 280px;
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

[data-tooltip]:hover::after {
  opacity: 1;
}

/* Tooltip for chart titles — position below instead */
.chart-box h3[data-tooltip]::after {
  bottom: auto;
  top: calc(100% + 4px);
}

/* Info Tab */
.info-container {
  max-width: 900px;
}

.info-container h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--text);
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.info-card-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
}

.info-card-input .info-card-icon { background: var(--accent); }
.info-card-output .info-card-icon { background: var(--green); }
.info-card-cache-read .info-card-icon { background: var(--purple); }
.info-card-cache-create .info-card-icon { background: var(--orange); }

.info-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.info-card p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

.info-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}

.info-section h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.info-section p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

.info-pricing-table {
  margin-top: 12px;
}

@media (max-width: 600px) {
  .info-grid { grid-template-columns: 1fr; }
}

/* Login Overlay */
.login-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px;
  text-align: center;
  max-width: 400px;
  width: 90%;
}

.login-logo {
  width: 48px;
  height: 48px;
  background: var(--accent);
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

.login-card h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.login-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.login-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  background: #24292e;
  color: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s;
}

.login-btn:hover {
  background: #2f363d;
  border-color: var(--accent);
}

/* User Info in Header */
.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
}

.user-name {
  font-size: 13px;
  color: var(--text);
  font-weight: 500;
}

.logout-btn {
  padding: 4px 10px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 11px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}

.logout-btn:hover {
  color: var(--red);
  border-color: var(--red);
}

/* Sync Setup Section */
.sync-setup {
  border-color: var(--accent);
}

.api-key-box {
  margin: 16px 0;
}

.api-key-box label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  display: block;
  margin-bottom: 6px;
}

.api-key-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.api-key-value {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: monospace;
}

.btn-small {
  padding: 6px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 12px;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}

.btn-small:hover {
  color: var(--text);
  border-color: var(--accent);
}

.btn-danger:hover {
  color: var(--red);
  border-color: var(--red);
}

.sync-install-desc {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

.sync-curl-box {
  margin: 16px 0;
}

.sync-curl-box label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  display: block;
  margin-bottom: 6px;
}

.sync-curl-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sync-curl-value {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: monospace;
}

.sync-download-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 16px 0;
  font-size: 13px;
  color: var(--text-muted);
}

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

.btn-download:hover {
  background: #4c94e6;
  border-color: #4c94e6;
  color: #fff;
}

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

.sync-pm2-box {
  margin-top: 16px;
}

.sync-pm2-box p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.sync-pm2-box h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.sync-pm2-box pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  overflow-x: auto;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-muted);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  margin-top: 48px;
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.footer-dev {
  font-size: 12px;
  color: var(--text-muted);
}

.footer-dev a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.footer-dev a:hover {
  color: var(--accent);
}

.footer-github {
  color: var(--text-muted);
  transition: color 0.15s;
  display: inline-flex;
}

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