/* #region VARIABLES */
:root {
  /* pi-dark defaults (matches the default dark theme so first paint has no flash). */
  --bg-deep: #0d1116;
  --bg-surface: #161d27;
  --bg-elevated: #212730;
  --bg-hover: #252f3d;
  --border: #495059;
  --text-primary: #ebe7e4;
  --text-secondary: #d5d8db;
  --text-tertiary: #9fa4ab;
  --text-muted: #757d89;
  --accent: #6a9fcc;
  --accent-text: #8fb6d8;
  --accent-dim: rgba(106, 159, 204, 0.22);
  --accent-glow: rgba(106, 159, 204, 0.55);
  --accent-faint: rgba(106, 159, 204, 0.05);
  --accent-soft: rgba(106, 159, 204, 0.12);
  --accent-tag: rgba(106, 159, 204, 0.15);
  --chart-fill: rgba(106, 159, 204, 0.6);
  --success: #4ade80;
  --success-dim: rgba(74, 222, 128, 0.18);
  --warning: #fbbf24;
  --warning-dim: rgba(251, 191, 36, 0.18);
  --error: #ef4444;
  --error-dim: rgba(239, 68, 68, 0.18);
  --muted-dim: rgba(117, 125, 137, 0.18);
  --mono: 'IBM Plex Mono', monospace;
  --serif: 'Playfair Display', serif;
  --chart-1: #e86f33;
  --chart-2: #4a9eda;
  --chart-3: #3ecf8e;
  --chart-4: #f0b429;
}
/* #endregion */

/* #region RESET */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.5;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}
code { font-family: var(--mono); background: var(--bg-hover); padding: 1px 4px; border-radius: 3px; font-size: 11px; }
a { color: var(--accent-text); }
/* #endregion */

/* #region SCROLLBAR */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }
/* #endregion */

/* #region TOPBAR */
.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0; z-index: 10;
}
.topbar-logo { display: flex; align-items: center; gap: 10px; }
.topbar-logo .logo-mark {
  width: 24px; height: 24px; background: var(--accent);
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
}
.topbar-logo .logo-mark svg { width: 14px; height: 14px; color: white; }
.topbar-logo .logo-text {
  font-family: var(--serif); font-size: 17px; font-weight: 500; letter-spacing: -0.02em;
}
.spacer { flex: 1; }
.topbar-nav {
  display: flex; gap: 2px;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 6px; padding: 2px;
}
.topbar-nav-btn {
  padding: 4px 12px; border-radius: 4px;
  font-size: 11px; font-weight: 500; cursor: pointer; border: none;
  background: transparent; color: var(--text-tertiary);
  font-family: var(--mono);
  transition: all 0.15s ease;
  text-transform: uppercase; letter-spacing: 0.03em;
}
.topbar-nav-btn:hover { color: var(--text-secondary); }
.topbar-nav-btn.active { background: var(--accent-dim); color: var(--accent-text); }
.topbar-select {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text-secondary);
  font-family: var(--mono); font-size: 11px; padding: 4px 8px;
  outline: none; cursor: pointer;
}
.topbar-select:focus { border-color: var(--accent); }
.topbar-btn {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 10px; border-radius: 6px;
  font-size: 11px; font-weight: 500; cursor: pointer;
  border: 1px solid var(--border); background: var(--bg-elevated);
  color: var(--text-tertiary); font-family: var(--mono);
  transition: all 0.15s ease;
  white-space: nowrap; text-transform: uppercase; letter-spacing: 0.03em;
}
.topbar-btn:hover { border-color: var(--accent); color: var(--text-secondary); }
.topbar-btn svg { color: var(--text-muted); }
.topbar-btn.loading svg { animation: spin 1s linear infinite; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
/* #endregion */

/* #region LAYOUT */
.dashboard { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 20px 24px; }
.dashboard-content { max-width: 1400px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; }
/* #endregion */

/* #region CARDS */
.cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px; margin-bottom: 20px;
}
.stat-card {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 8px; padding: 16px;
  transition: border-color 0.15s ease;
}
.stat-card:hover { border-color: var(--accent-dim); }
.stat-card .card-label {
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-muted); margin-bottom: 6px;
}
.stat-card .card-value {
  font-size: 22px; font-weight: 600;
  color: var(--text-primary); font-family: var(--mono);
}
.stat-card .card-value.cost { color: var(--accent-text); }
.stat-card .card-sub { font-size: 10px; color: var(--text-muted); margin-top: 4px; }
/* #endregion */

/* #region CHARTS */
.charts-row {
  display: grid; grid-template-columns: 3fr 2fr;
  gap: 16px; margin-bottom: 20px;
}
.chart-box {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 8px; padding: 16px;
  overflow: hidden; min-width: 0;
}
.chart-box .chart-title {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-muted); margin-bottom: 12px;
}
.chart-box canvas { max-width: 100%; max-height: 180px; }
/* #endregion */

/* #region TABLE */
.section-title {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-muted); margin-bottom: 12px;
}
.data-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.data-table th {
  text-align: left; padding: 8px 12px;
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-muted); border-bottom: 1px solid var(--border);
  cursor: pointer; user-select: none; white-space: nowrap;
}
.data-table th:hover { color: var(--accent-text); }
.data-table th.sorted { color: var(--accent-text); }
.data-table th .sort-arrow { margin-left: 4px; font-size: 9px; }
.data-table td {
  padding: 10px 12px; border-bottom: 1px solid var(--border);
  color: var(--text-secondary); vertical-align: middle;
}
.data-table tbody tr:hover { background: var(--bg-hover); cursor: pointer; }
.data-table tbody tr.kb-selected {
  background: var(--accent-dim);
  outline: 1px solid var(--accent); outline-offset: -1px;
}
.data-table .cost-cell { color: var(--accent-text); font-weight: 500; }
.data-table .muted { color: var(--text-muted); }
.data-table .truncate { max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.model-badge {
  display: inline-block; padding: 2px 6px;
  border-radius: 4px; font-size: 10px;
  background: var(--bg-hover); color: var(--text-tertiary);
  border: 1px solid var(--border);
}
.provider-badge {
  display: inline-block; padding: 1px 6px; margin-right: 4px;
  border-radius: 3px; font-size: 9px;
  background: var(--accent-dim); color: var(--accent-text);
  text-transform: uppercase; letter-spacing: 0.04em;
}
/* #endregion */

/* #region COST_SOURCE */
.src-badge {
  display: inline-block; padding: 1px 5px;
  border-radius: 3px; font-size: 9px;
  text-transform: uppercase; letter-spacing: 0.03em;
  margin-left: 4px; vertical-align: middle;
}
.src-jsonl { background: var(--success-dim); color: var(--success); }
.src-pricing { background: var(--warning-dim); color: var(--warning); }
.src-none { background: var(--muted-dim); color: var(--text-muted); }

.detail-sub {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

.session-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  color: var(--text-primary);
}

.subagent-row { background: var(--accent-faint); }
.subagent-row.clickable { cursor: pointer; }
.subagent-row.clickable:hover { background: var(--accent-soft); }
.subagent-row td { border-left: 2px solid var(--accent); }
.subagent-row td:not(:first-child) { border-left: none; }
.subagent-tag {
  display: inline-block; padding: 1px 6px; border-radius: 3px;
  background: var(--accent-tag); color: var(--accent);
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.04em;
  margin-right: 4px;
}
/* #endregion */

/* #region BREADCRUMB */
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 16px; font-size: 12px;
}
.breadcrumb a { color: var(--accent-text); text-decoration: none; cursor: pointer; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--text-muted); }
.breadcrumb .current { color: var(--text-secondary); }
/* #endregion */

/* #region DETAIL */
.detail-header { display: flex; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.detail-stat { display: flex; flex-direction: column; gap: 2px; }
.detail-stat .detail-label {
  font-size: 10px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.03em;
}
.detail-stat .detail-value { font-size: 16px; font-weight: 500; color: var(--text-secondary); }
.detail-stat .detail-value.cost { color: var(--accent-text); }

.messages-table { width: 100%; border-collapse: collapse; font-size: 11px; }
.messages-table th {
  text-align: left; padding: 6px 10px;
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-muted); border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.messages-table td {
  padding: 6px 10px; border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.messages-table .cost-cell { color: var(--accent-text); font-weight: 500; }
.messages-table .cumulative { color: var(--text-muted); font-size: 10px; }
/* #endregion */

/* #region LOADING */
.loading-state {
  display: flex; align-items: center; justify-content: center;
  gap: 10px; height: 200px;
  color: var(--text-muted); font-size: 12px;
}
.loading-spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; padding: 60px 20px;
  color: var(--text-muted); font-size: 12px; text-align: center;
}
.empty-state .empty-icon { font-size: 32px; opacity: 0.5; margin-bottom: 8px; }
/* #endregion */

/* #region MODAL */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  display: none; align-items: center; justify-content: center; z-index: 10000;
}
.modal-overlay.visible { display: flex; }
.modal-box {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: 12px; width: 90%; max-width: 540px; max-height: 90vh;
  padding: 24px; box-shadow: 0 20px 60px rgba(0,0,0,0.5); overflow-y: auto;
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.modal-title { font-size: 18px; font-weight: 600; color: var(--text-primary); }
.modal-body { color: var(--text-secondary); line-height: 1.6; }
.modal-body p { margin: 0 0 12px; font-size: 12px; }
.modal-close {
  margin-top: 20px; width: 100%; padding: 8px;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text-secondary);
  cursor: pointer; font-family: var(--mono); font-size: 12px; text-transform: uppercase;
}
.modal-close:hover { background: var(--bg-hover); color: var(--text-primary); }
.modal-divider { border: none; border-top: 1px solid var(--border); margin: 16px 0; }
.shortcut-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.shortcut-section { margin: 0 0 8px 0; color: var(--text-primary); font-size: 13px; font-weight: 600; }
.shortcut-table { width: 100%; font-size: 12px; }
.shortcut-table td { padding: 3px 0; color: var(--text-secondary); }
.shortcut-table kbd {
  background: var(--bg-hover); padding: 1px 6px;
  border-radius: 4px; font-family: var(--mono); font-size: 11px;
  border: 1px solid var(--border);
}
/* #endregion */

/* #region TOAST */
.toast-container { position: fixed; bottom: 16px; right: 16px; z-index: 100; }
.toast {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 6px; padding: 8px 14px;
  font-size: 11px; color: var(--text-secondary);
  animation: slideIn 0.2s ease;
  margin-top: 6px;
}
.toast.toast-success { border-color: var(--success); color: var(--success); }
@keyframes slideIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
/* #endregion */

/* #region LIGHT_THEME */
/* Shared light-mode tokens — applied via @media (prefers-color-scheme: light)
   when the user has no saved preference, OR via body.light when they explicitly
   choose light. body.dark-forced wins back to dark over the media query. */
/* pi-light defaults (matches the default light theme so first paint has no flash). */
body.light {
  --bg-deep: #ebe7e4;
  --bg-surface: #f4f1ee;
  --bg-elevated: #e0dcd8;
  --bg-hover: #d5d1cd;
  --border: #b5b0aa;
  --text-primary: #0d1116;
  --text-secondary: #212730;
  --text-tertiary: #495059;
  --text-muted: #757d89;
  --accent: #2f5f8a;
  --accent-text: #1d4870;
  --accent-dim: rgba(47, 95, 138, 0.18);
  --accent-glow: rgba(47, 95, 138, 0.5);
  --accent-faint: rgba(47, 95, 138, 0.06);
  --accent-soft: rgba(47, 95, 138, 0.12);
  --accent-tag: rgba(47, 95, 138, 0.15);
  --chart-fill: rgba(47, 95, 138, 0.5);
  --success: #15803d;
  --success-dim: rgba(21, 128, 61, 0.15);
  --warning: #b45309;
  --warning-dim: rgba(180, 83, 9, 0.15);
  --error: #c53030;
  --error-dim: rgba(197, 48, 48, 0.15);
  --muted-dim: rgba(117, 125, 137, 0.15);
}

@media (prefers-color-scheme: light) {
  body:not(.dark-forced) {
    --bg-deep: #ebe7e4;
    --bg-surface: #f4f1ee;
    --bg-elevated: #e0dcd8;
    --bg-hover: #d5d1cd;
    --border: #b5b0aa;
    --text-primary: #0d1116;
    --text-secondary: #212730;
    --text-tertiary: #495059;
    --text-muted: #757d89;
    --accent: #2f5f8a;
    --accent-text: #1d4870;
    --accent-dim: rgba(47, 95, 138, 0.18);
    --accent-glow: rgba(47, 95, 138, 0.5);
    --accent-faint: rgba(47, 95, 138, 0.06);
    --accent-soft: rgba(47, 95, 138, 0.12);
    --accent-tag: rgba(47, 95, 138, 0.15);
    --chart-fill: rgba(47, 95, 138, 0.5);
    --success: #15803d;
    --success-dim: rgba(21, 128, 61, 0.15);
    --warning: #b45309;
    --warning-dim: rgba(180, 83, 9, 0.15);
    --error: #c53030;
    --error-dim: rgba(197, 48, 48, 0.15);
    --muted-dim: rgba(117, 125, 137, 0.15);
  }
}
/* #endregion */

/* #region RESPONSIVE */
@media (max-width: 900px) {
  .charts-row { grid-template-columns: 1fr; }
  .cards-row { grid-template-columns: repeat(2, 1fr); }
  .shortcut-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .topbar { flex-wrap: wrap; gap: 8px; padding: 8px 12px; }
  .topbar-nav { order: 10; width: 100%; }
  .topbar-nav-btn { flex: 1; text-align: center; }
  .cards-row { grid-template-columns: 1fr; }
  .dashboard { padding: 12px; }
}
/* #endregion */