.usage-trigger, .usage-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--seed-border, #d9dde5);
  border-radius: 7px;
  background: var(--seed-elevated, #fff);
  color: var(--seed-fg-secondary, #4a5060);
  font: inherit;
  font-size: 13px;
  line-height: 1.4;
  padding: 6px 10px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}
.usage-trigger svg { flex-shrink: 0; }
.usage-trigger:hover, .usage-button:hover { background: var(--seed-hover, #f0f2f6); }
.usage-trigger:focus-visible, .usage-dialog :focus-visible {
  outline: 2px solid var(--seed-accent, #5e6ad2);
  outline-offset: 3px;
}
.usage-dialog {
  box-sizing: border-box;
  position: fixed;
  inset: 0;
  margin: auto;
  padding: 0;
  width: min(960px, calc(100% - 40px));
  max-width: none;
  max-height: 90vh;
  max-height: 90dvh;
  border: 1px solid var(--seed-border, #d9dde5);
  border-radius: 14px;
  background: var(--seed-elevated, #fff);
  color: var(--seed-fg, #1a1d23);
  box-shadow: 0 24px 80px rgba(0, 0, 0, .24);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  overflow: auto;
  overscroll-behavior: contain;
}
.usage-dialog:not([open]) { display: none; }
.usage-dialog[open] { display: block; }
.usage-dialog::backdrop { background: rgba(12, 16, 26, .5); }
.usage-dialog * { box-sizing: border-box; }
.usage-dialog h2, .usage-dialog h3, .usage-dialog p, .usage-dialog dl, .usage-dialog dd { margin: 0; }
.usage-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--seed-border, #d9dde5);
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--seed-elevated, #fff);
}
.usage-dialog h2 { font-size: 20px; font-weight: 600; }
.usage-dialog h3 { font-size: 15px; font-weight: 600; margin-bottom: 10px; }
.usage-dialog .usage-muted { color: var(--seed-fg-muted, #6b7280); font-size: 12px; }
.usage-toolbar { display: flex; justify-content: space-between; gap: 12px; padding: 16px 24px 0; }
.usage-periods { display: flex; gap: 6px; }
.usage-button[aria-pressed='true'] {
  color: var(--seed-accent, #5e6ad2);
  background: var(--seed-accent-bg, #f1f2fc);
  border-color: var(--seed-accent, #5e6ad2);
  font-weight: 600;
}
.usage-dialog .usage-status { padding: 12px 24px; color: var(--seed-fg-muted, #6b7280); }
.usage-dialog .usage-error { color: var(--seed-danger, #b42318); }
.usage-content { padding: 0 24px 24px; overflow-wrap: anywhere; }
.usage-content:empty { padding-bottom: 8px; }
.usage-warning {
  border: 1px solid var(--seed-warning, #d97706);
  border-left-width: 3px;
  background: var(--seed-warning-bg, #fff7ed);
  border-radius: 8px;
  padding: 12px 14px;
  margin: 12px 0;
  font-size: 12px;
}
.usage-warning strong { display: block; font-size: 13px; margin-bottom: 4px; }
.usage-dialog .usage-notice { color: var(--seed-fg-secondary, #4a5060); font-size: 13px; margin-bottom: 14px; white-space: pre-wrap; }
.usage-dialog .usage-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 16px 0 24px; }
.usage-metric { min-width: 0; border: 1px solid var(--seed-border, #d9dde5); border-radius: 9px; padding: 14px; }
.usage-metric dt { font-size: 12px; color: var(--seed-fg-muted, #6b7280); }
.usage-metric dd { font-size: 24px; font-weight: 600; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.usage-metric:first-child { background: var(--seed-accent-bg, #f1f2fc); }
.usage-metric .usage-muted { font-weight: 400; letter-spacing: normal; margin-top: 4px; }
.usage-section { margin-top: 24px; }
.usage-table { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: 12px; }
.usage-table caption { text-align: left; font-size: 15px; font-weight: 600; margin-bottom: 10px; color: var(--seed-fg, #1a1d23); }
.usage-table th, .usage-table td { padding: 10px 8px; border-bottom: 1px solid var(--seed-border, #d9dde5); text-align: right; vertical-align: top; font-variant-numeric: tabular-nums; }
.usage-table th { font-weight: 500; color: var(--seed-fg-muted, #6b7280); background: var(--seed-bg, #f5f6f8); }
.usage-table th:first-child, .usage-table td:first-child { text-align: left; width: 28%; }
.usage-incomplete { color: var(--seed-danger, #b42318); font-weight: 600; }
.usage-dialog .usage-empty { padding: 20px 12px; text-align: center; color: var(--seed-fg-muted, #6b7280); font-size: 13px; }
.usage-recent { list-style: none; padding: 0; margin: 12px 0 0; }
.usage-call { border: 1px solid var(--seed-border, #d9dde5); border-radius: 8px; padding: 14px; margin-top: 10px; }
.usage-call-top { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; font-size: 13px; }
.usage-dialog .usage-call-model { font-size: 12px; color: var(--seed-fg-secondary, #4a5060); margin: 6px 0 10px; }
.usage-call-values { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.usage-call-values-money { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.usage-call-values dt { font-size: 11px; color: var(--seed-fg-muted, #6b7280); }
.usage-call-values dd { font-size: 13px; font-variant-numeric: tabular-nums; }
@media (max-width: 640px) {
  .topbar:has(.usage-trigger) { gap: 8px; min-width: 0; }
  .topbar:has(.usage-trigger) .topbar-left { min-width: 0; flex-shrink: 0; }
  .topbar:has(.usage-trigger) .breadcrumb { max-width: 70px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .topbar-right:has(> .usage-trigger) { min-width: 0; overflow-x: auto; gap: 6px; padding: 4px 0; }
  .topbar-right:has(> .usage-trigger) > * { flex-shrink: 0; }
  .usage-dialog { width: calc(100% - 16px); max-height: calc(100dvh - 16px); border-radius: 10px; }
  .usage-header { padding: 16px; gap: 10px; }
  .usage-toolbar { padding: 14px 16px 0; }
  .usage-dialog .usage-status { padding: 12px 16px; }
  .usage-content { padding: 0 16px 16px; }
  .usage-dialog .usage-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .usage-metric { padding: 10px; }
  .usage-metric dd { font-size: 21px; }
  .usage-button { min-height: 36px; }
  .usage-call-values, .usage-call-values-money { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .usage-table, .usage-table tbody, .usage-table tr, .usage-table td { display: block; width: 100%; }
  .usage-table caption { display: block; }
  .usage-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .usage-table tr { border: 1px solid var(--seed-border, #d9dde5); border-radius: 8px; padding: 8px 12px; margin-bottom: 10px; }
  .usage-table td, .usage-table td:first-child { display: flex; justify-content: space-between; gap: 16px; width: 100%; border: 0; padding: 4px 0; text-align: right; }
  .usage-table td::before { content: attr(data-label); flex: 0 0 90px; text-align: left; font-weight: 400; color: var(--seed-fg-muted, #6b7280); }
}
@media (max-width: 360px) {
  .usage-dialog .usage-metrics { grid-template-columns: minmax(0, 1fr); }
}