/* ═══════════════════════════════════════════════════════════════
   API USAGE & COST MONITORING PANEL
   Budget tracking, model costs, routing strategy, usage logs
   ═══════════════════════════════════════════════════════════════ */

.usg-wrap { padding: 16px 24px; max-width: 1400px; margin: 0 auto; }
.usg-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 8px; }
.usg-header h2 { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); }
.usg-header-actions { display: flex; gap: 6px; }

/* Sub-tabs */
.usg-tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--border); padding-bottom: 0; }
.usg-tab {
  padding: 8px 16px; font-size: 0.8rem; font-weight: 500; cursor: pointer;
  color: var(--text-secondary); border-bottom: 2px solid transparent;
  transition: all var(--transition); background: none; border-top: none; border-left: none; border-right: none;
  font-family: var(--font);
}
.usg-tab:hover { color: var(--text-primary); }
.usg-tab.active { color: var(--accent-blue); border-bottom-color: var(--accent-blue); }
.usg-section { display: none; }
.usg-section.active { display: block; animation: fadeIn 0.25s ease; }

/* Budget overview cards */
.usg-budget-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; margin-bottom: 20px; }
.usg-budget-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 16px; text-align: center; position: relative; overflow: hidden;
}
.usg-budget-card.highlight { border-color: var(--accent-blue); box-shadow: var(--shadow-glow); }
.usg-budget-val { font-size: 1.6rem; font-weight: 700; line-height: 1.2; }
.usg-budget-label { font-size: 0.68rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 4px; }
.usg-budget-sub { font-size: 0.7rem; color: var(--text-secondary); margin-top: 2px; }

/* Progress bar */
.usg-progress { width: 100%; height: 8px; background: var(--bg-tertiary); border-radius: 4px; overflow: hidden; margin-top: 8px; }
.usg-progress-fill { height: 100%; border-radius: 4px; transition: width 0.4s ease; }
.usg-progress-fill.green { background: linear-gradient(90deg, var(--accent-green), #56d364); }
.usg-progress-fill.yellow { background: linear-gradient(90deg, var(--accent-yellow), var(--accent-orange)); }
.usg-progress-fill.red { background: linear-gradient(90deg, var(--accent-red), #ff6b6b); }

/* Emergency banner */
.usg-emergency {
  background: var(--accent-red-bg); border: 1px solid var(--accent-red); border-radius: var(--radius-md);
  padding: 12px 16px; margin-bottom: 16px; display: none; align-items: center; gap: 10px;
}
.usg-emergency.visible { display: flex; }
.usg-emergency-icon { font-size: 1.4rem; }
.usg-emergency-text { font-size: 0.82rem; color: var(--accent-red); font-weight: 500; }

/* Model cost table */
.usg-model-table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.usg-model-table th {
  text-align: left; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-muted); padding: 8px 12px; border-bottom: 1px solid var(--border);
}
.usg-model-table td {
  padding: 10px 12px; font-size: 0.82rem; border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.usg-model-table tr:hover td { background: var(--bg-hover); }
.usg-model-name { font-weight: 600; color: var(--text-primary); }
.usg-model-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }
.usg-model-dot.opus { background: var(--accent-purple); }
.usg-model-dot.sonnet { background: var(--accent-blue); }
.usg-model-dot.haiku { background: var(--accent-green); }

/* Pie chart (pure CSS) */
.usg-pie-wrap { display: flex; align-items: center; gap: 24px; margin-bottom: 20px; flex-wrap: wrap; }
.usg-pie {
  width: 160px; height: 160px; border-radius: 50%; position: relative;
  flex-shrink: 0;
}
.usg-pie-center {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 80px; height: 80px; border-radius: 50%; background: var(--bg-card);
  display: flex; align-items: center; justify-content: center; flex-direction: column;
}
.usg-pie-center-val { font-size: 1rem; font-weight: 700; }
.usg-pie-center-label { font-size: 0.6rem; color: var(--text-muted); }
.usg-pie-legend { display: flex; flex-direction: column; gap: 8px; }
.usg-pie-legend-item { display: flex; align-items: center; gap: 8px; font-size: 0.78rem; }
.usg-pie-legend-dot { width: 12px; height: 12px; border-radius: 3px; flex-shrink: 0; }

/* Department / Agent cards */
.usg-dept-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; margin-bottom: 16px; }
.usg-dept-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 14px;
}
.usg-dept-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.usg-dept-name { font-weight: 600; font-size: 0.88rem; }
.usg-dept-cost { font-weight: 700; font-size: 0.88rem; }
.usg-bar-row { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.usg-bar-label { min-width: 90px; font-size: 0.7rem; color: var(--text-secondary); }
.usg-bar-track { flex: 1; height: 6px; background: var(--bg-tertiary); border-radius: 3px; overflow: hidden; }
.usg-bar-fill { height: 100%; border-radius: 3px; }
.usg-bar-val { min-width: 50px; font-size: 0.7rem; font-weight: 600; text-align: right; }

/* Daily burn rate chart */
.usg-burn-chart { display: flex; align-items: flex-end; gap: 3px; height: 180px; padding: 0 4px; margin-bottom: 8px; position: relative; }
.usg-burn-bar {
  flex: 1; min-width: 0; border-radius: 3px 3px 0 0; position: relative; cursor: pointer;
  transition: opacity var(--transition);
}
.usg-burn-bar:hover { opacity: 0.8; }
.usg-burn-bar.under { background: var(--accent-green); }
.usg-burn-bar.over { background: var(--accent-red); }
.usg-burn-tooltip {
  display: none; position: absolute; bottom: 100%; left: 50%; transform: translateX(-50%);
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 4px 8px; font-size: 0.68rem; white-space: nowrap; z-index: 10;
  pointer-events: none;
}
.usg-burn-bar:hover .usg-burn-tooltip { display: block; }
.usg-burn-line {
  position: absolute; left: 0; right: 0; border-top: 2px dashed var(--accent-yellow);
  z-index: 5; pointer-events: none;
}
.usg-burn-line-label {
  position: absolute; right: 4px; top: -14px; font-size: 0.6rem; color: var(--accent-yellow);
}
.usg-burn-labels { display: flex; gap: 3px; padding: 4px; }
.usg-burn-labels span { flex: 1; text-align: center; font-size: 0.55rem; color: var(--text-muted); }
.usg-burn-legend { display: flex; gap: 16px; justify-content: center; margin-top: 8px; font-size: 0.7rem; color: var(--text-secondary); }
.usg-burn-legend-dot { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: middle; }

/* Routing strategy */
.usg-route-tier {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md);
  margin-bottom: 12px; overflow: hidden;
}
.usg-route-tier-header {
  display: flex; align-items: center; justify-content: space-between; padding: 12px 16px;
  cursor: pointer; transition: background var(--transition);
}
.usg-route-tier-header:hover { background: var(--bg-hover); }
.usg-route-tier-title { font-weight: 600; font-size: 0.88rem; }
.usg-route-tier-meta { font-size: 0.7rem; color: var(--text-muted); }
.usg-route-tier-body { padding: 0 16px 12px; }
.usg-route-task {
  display: flex; align-items: center; justify-content: space-between; padding: 6px 0;
  border-bottom: 1px solid var(--border); font-size: 0.8rem;
}
.usg-route-task:last-child { border-bottom: none; }
.usg-route-task-name { color: var(--text-secondary); flex: 1; }
.usg-route-task select {
  padding: 4px 8px; background: var(--bg-tertiary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-primary); font-family: var(--font);
  font-size: 0.75rem; cursor: pointer;
}
.usg-route-task select:focus { outline: none; border-color: var(--accent-blue); }
.usg-route-est {
  margin-top: 10px; padding: 10px; background: var(--bg-tertiary); border-radius: var(--radius-sm);
  font-size: 0.75rem; color: var(--text-secondary);
}
.usg-route-est strong { color: var(--text-primary); }

/* Alerts & controls */
.usg-alerts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; margin-bottom: 16px; }
.usg-alert-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 14px;
}
.usg-alert-card h4 { font-size: 0.82rem; margin-bottom: 8px; }
.usg-alert-row { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; font-size: 0.78rem; }
.usg-alert-row label { min-width: 80px; color: var(--text-secondary); }
.usg-alert-row input[type="number"] {
  width: 60px; padding: 4px 6px; background: var(--bg-tertiary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-primary); font-family: var(--font);
  font-size: 0.78rem; text-align: center;
}
.usg-alert-row input[type="number"]:focus { outline: none; border-color: var(--accent-blue); }
.usg-alert-badge {
  font-size: 0.68rem; font-weight: 600; padding: 2px 8px; border-radius: 10px; display: inline-block;
}
.usg-alert-ok { background: var(--accent-green-bg); color: var(--accent-green); }
.usg-alert-warn { background: var(--accent-yellow-bg); color: var(--accent-yellow); }
.usg-alert-crit { background: var(--accent-red-bg); color: var(--accent-red); }
.usg-pause-list { margin-top: 8px; }
.usg-pause-item {
  display: flex; align-items: center; gap: 8px; padding: 4px 0; font-size: 0.75rem;
  color: var(--text-secondary); border-bottom: 1px solid var(--border);
}
.usg-pause-item:last-child { border-bottom: none; }

/* Usage log table */
.usg-log-filters { display: flex; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.usg-log-filters input, .usg-log-filters select {
  padding: 6px 10px; background: var(--bg-tertiary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-primary); font-family: var(--font);
  font-size: 0.78rem;
}
.usg-log-filters input:focus, .usg-log-filters select:focus { outline: none; border-color: var(--accent-blue); }
.usg-log-wrap {
  max-height: 480px; overflow-y: auto; border: 1px solid var(--border); border-radius: var(--radius-md);
}
.usg-log-table { width: 100%; border-collapse: collapse; font-size: 0.75rem; }
.usg-log-table th {
  position: sticky; top: 0; background: var(--bg-secondary); z-index: 2;
  text-align: left; font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-muted); padding: 8px 8px; border-bottom: 1px solid var(--border);
}
.usg-log-table td {
  padding: 6px 8px; border-bottom: 1px solid var(--border); color: var(--text-secondary);
  white-space: nowrap;
}
.usg-log-table tr:hover td { background: var(--bg-hover); }
.usg-log-model {
  font-size: 0.65rem; font-weight: 600; padding: 1px 6px; border-radius: 8px;
  display: inline-block;
}
.usg-log-model.opus { background: var(--accent-purple-bg); color: var(--accent-purple); }
.usg-log-model.sonnet { background: var(--accent-blue-bg); color: var(--accent-blue); }
.usg-log-model.haiku { background: var(--accent-green-bg); color: var(--accent-green); }
.usg-log-cost { font-weight: 600; color: var(--text-primary); }

/* Top agents table */
.usg-top-agents { margin-bottom: 16px; }
.usg-top-agents table { width: 100%; border-collapse: collapse; }
.usg-top-agents th {
  text-align: left; font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-muted); padding: 6px 10px; border-bottom: 1px solid var(--border);
}
.usg-top-agents td { padding: 8px 10px; font-size: 0.8rem; border-bottom: 1px solid var(--border); color: var(--text-secondary); }

/* Responsive */
@media (max-width: 900px) {
  .usg-budget-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
  .usg-dept-grid { grid-template-columns: 1fr; }
  .usg-pie-wrap { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 600px) {
  .usg-wrap { padding: 12px; }
  .usg-tabs { overflow-x: auto; }
  .usg-tab { white-space: nowrap; padding: 8px 10px; font-size: 0.72rem; }
  .usg-burn-chart { height: 120px; }
}