/* Usage view (/dashboard/usage) and the Credits page insights block.
   Only existing tokens from app.css, so both themes follow the
   :root[data-theme] token swaps. Rendered by loadUsage() and
   loadCreditsInsights() in app.js. */

/* ── Range control row: one row, above everything it scopes ─────────── */
.usage-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.usage-range .seg-btn { min-width: 52px; text-align: center; font-variant-numeric: tabular-nums; }
.usage-toolbar-link {
  font-size: 13px;
  color: var(--vercel-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--vercel-border-strong);
}
.usage-toolbar-link:hover { color: var(--vercel-text); text-decoration-color: currentColor; }

.usage-root { transition: opacity 150ms ease; }
.usage-root.is-loading { opacity: .55; pointer-events: none; }

/* ── Stat tiles ─────────────────────────────────────────────────────── */
.usage-stats {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
@media (max-width: 1180px) { .usage-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 560px)  { .usage-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; } }

.usage-stat {
  background: var(--vercel-elevated);
  box-shadow: inset 0 0 0 1px var(--vercel-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  min-width: 0;
}
.usage-stat-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--vercel-muted);
}
.usage-stat-num {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-top: 6px;
  color: var(--vercel-text);
}
.usage-stat-sub {
  font-size: 12px;
  color: var(--vercel-muted);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
@media (max-width: 560px) {
  .usage-stat { padding: 12px; }
  .usage-stat-num { font-size: 24px; }
  .usage-stat-sub { white-space: normal; }
}

.usage-note {
  font-size: 12.5px;
  color: var(--vercel-muted);
  margin: -4px 0 16px;
}

/* ── Cards (chart, breakdown) ───────────────────────────────────────── */
.usage-card { margin-bottom: 16px; overflow: visible; }
.usage-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 16px 4px;
}
.usage-card-head h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--vercel-text);
  margin: 0 0 4px;
}
.usage-card-head p {
  font-size: 13px;
  line-height: 1.5;
  color: var(--vercel-muted);
  margin: 0;
}
.usage-export { flex-shrink: 0; padding: 7px 12px; font-size: 13px; }

/* ── Chart ──────────────────────────────────────────────────────────── */
.usage-chart {
  position: relative;
  margin: 8px 16px 12px;
  border-radius: var(--radius);
  outline: none;
}
.usage-chart:focus-visible { box-shadow: var(--vercel-focus); }
.usage-chart svg { display: block; overflow: visible; }
.usage-grid { stroke: var(--vercel-border); stroke-width: 1; shape-rendering: crispEdges; }
.usage-grid.is-zero { stroke: var(--vercel-border-strong); }
.usage-axis {
  fill: var(--vercel-muted);
  font: 500 11px/1 var(--font-sans);
  font-variant-numeric: tabular-nums;
}
.usage-hit { fill: transparent; }
.usage-hit.is-active { fill: var(--accent-faint); }
/* Single series in the brand green. Validated with the dataviz palette
   checker: light --accent (#0B8A5B) passes as is; dark --accent
   (#2DE3A0) is too light for a filled mark (L 0.81), so it is drawn at
   70% over the dark card (effective #25A579, L 0.62, passes). Hover
   lifts to full strength. Negative net (refunds beat spend) is grey. */
.uv-col { fill: var(--accent); transition: fill 120ms ease, fill-opacity 120ms ease; }
:root:not([data-theme="light"]) .uv-col { fill-opacity: .7; }
:root:not([data-theme="light"]) .uv-col.is-active { fill-opacity: 1; }
:root[data-theme="light"] .uv-col.is-active { fill: var(--accent-2); }
.uv-col.is-neg { fill: var(--vercel-muted); }
.uv-col.is-neg.is-active { fill: var(--vercel-text); }

.usage-tip {
  position: absolute;
  z-index: 3;
  min-width: 168px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--vercel-surface);
  box-shadow: inset 0 0 0 1px var(--vercel-border-strong), 0 10px 24px -12px rgba(0, 0, 0, .35);
  pointer-events: none;
  font-size: 12px;
  color: var(--vercel-muted);
}
.usage-tip-val {
  font-size: 15px;
  font-weight: 600;
  color: var(--vercel-text);
  font-variant-numeric: tabular-nums;
}
.usage-tip-per { margin: 2px 0 6px; }
.usage-tip-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 3px;
}
.usage-tip-row span:last-child { color: var(--vercel-text); font-variant-numeric: tabular-nums; }

/* ── Breakdown table (scrolls inside its own wrapper on small screens) ─ */
.usage-table-wrap {
  margin: 8px 16px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 8px;
  box-shadow: inset 0 0 0 1px var(--vercel-border);
}
.usage-table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: 13px;
  color: var(--vercel-text);
}
.usage-table th,
.usage-table td {
  padding: 9px 12px;
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.usage-table th:first-child { text-align: left; font-weight: 500; }
.usage-table thead th {
  font-size: 12px;
  font-weight: 500;
  color: var(--vercel-muted);
  border-bottom: 1px solid var(--vercel-border);
}
.usage-table tbody tr + tr td,
.usage-table tbody tr + tr th { border-top: 1px solid var(--vercel-border); }
.usage-table tfoot th,
.usage-table tfoot td {
  border-top: 1px solid var(--vercel-border-strong);
  font-weight: 600;
}
.usage-net { font-weight: 600; }
.usage-zero { color: var(--vercel-muted); }
.usage-foot {
  font-size: 12px;
  line-height: 1.5;
  color: var(--vercel-muted);
  margin: 10px 16px 16px;
}

.usage-empty { margin-bottom: 16px; }
.usage-empty .empty-icon svg { stroke-width: 1.6; }

/* ── Credits page: insights under the balance ───────────────────────── */
.cins {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--vercel-border);
}
.cins-figs,
.cins-meter,
.cins-meter-label,
.cins-avg { max-width: 760px; }
.cins-figs {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 1fr);
  gap: 12px 24px;
}
.cins-label { font-size: 12px; font-weight: 500; color: var(--vercel-muted); }
.cins-num {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--vercel-text);
  margin-top: 2px;
}
.cins-sub { font-size: 12px; color: var(--vercel-muted); }
.cins-meter {
  margin-top: 16px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent-faint);
  box-shadow: inset 0 0 0 1px var(--border-accent);
  overflow: hidden;
}
.cins-meter span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--accent);
}
.cins-meter-label { font-size: 12px; color: var(--vercel-muted); margin-top: 6px; font-variant-numeric: tabular-nums; }
.cins-avg {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  margin-top: 14px;
  font-size: 13px;
}
.cins-avg-label { color: var(--vercel-muted); }
.cins-avg-num { color: var(--vercel-text); font-weight: 600; }
.cins-avg-sub { color: var(--vercel-muted); font-size: 12px; flex-basis: 100%; }
.cins-note { font-size: 12px; color: var(--vercel-muted); margin-top: 8px; }
.cins-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--vercel-text);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--vercel-border-strong);
}
.cins-link:hover { text-decoration-color: currentColor; }

/* ── Light theme: tiles and panels are near-white on the paper canvas,
   same as the Overview metrics. ───────────────────────────────────── */
:root[data-theme="light"] .usage-stat,
:root[data-theme="light"] .usage-card {
  background: var(--vercel-surface);
  box-shadow: inset 0 0 0 1px var(--vercel-border);
}
:root[data-theme="light"] .usage-empty { background: var(--vercel-surface); }
:root[data-theme="light"] .usage-card:hover { box-shadow: inset 0 0 0 1px var(--vercel-border-strong); }
:root[data-theme="light"] .usage-tip {
  background: var(--vercel-surface);
  box-shadow: inset 0 0 0 1px var(--vercel-border-strong), 0 12px 24px -14px rgba(15, 22, 19, .3);
}

@media (max-width: 560px) {
  .usage-card-head { flex-direction: column; align-items: stretch; }
  .usage-export { align-self: flex-start; }
  .usage-chart { margin: 8px 12px 12px; }
  .usage-table-wrap { margin: 8px 12px 0; }
  .usage-foot { margin: 10px 12px 14px; }
  /* Fit 390px without scrolling when it can; the wrapper still scrolls
     if a locale's labels run long. */
  .usage-table { min-width: 0; font-size: 12.5px; }
  .usage-table th, .usage-table td { padding: 8px 7px; }
  .usage-table thead th { white-space: normal; vertical-align: bottom; }
}
@media (prefers-reduced-motion: reduce) {
  .usage-root, .uv-col { transition: none; }
}