/* Cost Monitor dashboard. Dark-only; tokens first, then layout, then components. */

:root {
  color-scheme: dark;

  /* surfaces */
  --bg: #0e0f12;
  --surface: #17181c;
  --surface-raised: #1e2025;
  --surface-hover: #24262c;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  /* ink (all >= 4.5:1 on --surface except --ink-faint, used only for non-essential chrome) */
  --ink: #f2f2f0;
  --ink-secondary: #c3c2b7;
  --ink-muted: #9b9a93;
  --ink-faint: #6b6b66;

  /* accent + status (status colors always paired with an icon and words) */
  --accent: #3987e5;
  --accent-ink: #8dbcf5;
  --good: #0ca30c;
  --good-ink: #4cc94c;
  --warning: #fab219;
  --warning-bg: #2a2109;
  --warning-border: #6b4f0f;
  --critical: #d03b3b;
  --critical-ink: #f08a8a;
  --critical-bg: #2a1414;
  --critical-border: #6a2626;

  /* chart chrome */
  --grid: #2a2b30;
  --axis: #3a3b40;

  /* type scale */
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-md: 0.9375rem;
  --text-lg: 1.125rem;
  --text-xl: 1.625rem;

  /* spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;

  --radius: 10px;
  --radius-sm: 6px;
  --focus: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent-ink);
  --ease: 140ms ease;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--text-md);
  line-height: 1.5;
}

h1, h2, p { margin: 0; }

:focus-visible { outline: none; box-shadow: var(--focus); border-radius: var(--radius-sm); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: var(--space-4); top: -3rem; z-index: 10;
  background: var(--surface-raised); color: var(--ink); padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm); text-decoration: none;
}
.skip-link:focus { top: var(--space-2); }

/* ------------------------------------------------------------- top bar */

.topbar { border-bottom: 1px solid var(--border); background: var(--bg); }
.topbar-inner, .page, .statusbar, .banner {
  max-width: 1280px; margin-inline: auto; padding-inline: var(--space-5);
}
.topbar-inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: var(--space-4); padding-block: var(--space-4);
}
.brand h1 { font-size: var(--text-lg); font-weight: 650; letter-spacing: -0.01em; }
.brand-sub { color: var(--ink-muted); font-size: var(--text-sm); }

.controls { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }

.segmented {
  display: inline-flex; padding: 2px; gap: 2px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
}
.segmented button {
  font: inherit; font-size: var(--text-sm); color: var(--ink-secondary);
  background: transparent; border: 0; border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3); min-height: 30px; cursor: pointer;
  transition: background var(--ease), color var(--ease);
}
.segmented button:hover { color: var(--ink); background: var(--surface-hover); }
.segmented button[aria-pressed="true"] { background: var(--surface-raised); color: var(--ink); box-shadow: inset 0 0 0 1px var(--border-strong); }
.segmented button[data-mode="demo"][aria-pressed="true"] { color: var(--warning); }

.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font: inherit; font-size: var(--text-sm); color: var(--ink);
  background: var(--surface-raised); border: 1px solid var(--border-strong);
  border-radius: 8px; padding: var(--space-1) var(--space-3); min-height: 34px; cursor: pointer;
  transition: background var(--ease), border-color var(--ease);
}
.btn:hover:not(:disabled) { background: var(--surface-hover); border-color: rgba(255, 255, 255, 0.24); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-quiet { background: transparent; }
.btn[aria-busy="true"] svg { animation: spin 0.9s linear infinite; }

/* ------------------------------------------------------------- banners */

.banner {
  display: flex; align-items: flex-start; gap: var(--space-3);
  margin-top: var(--space-4); padding-block: var(--space-3);
  border-radius: var(--radius); font-size: var(--text-sm);
}
.banner[hidden] { display: none; }
.banner svg { flex: none; margin-top: 2px; }
.banner p + p, .banner ul { margin-top: var(--space-1); }
.banner ul { padding-left: 1.1rem; margin-bottom: 0; }
.banner-body { flex: 1; }

.banner-synthetic {
  position: sticky; top: 0; z-index: 5;
  background: var(--warning-bg); color: #ffd98a;
  border: 1px solid var(--warning-border);
  max-width: calc(1280px - 2 * var(--space-5));
  padding-inline: var(--space-4);
}
.banner-synthetic svg { color: var(--warning); }
.banner-synthetic strong { color: var(--warning); }

.banner-notice {
  background: var(--surface-raised); color: var(--ink-secondary);
  border: 1px solid var(--border-strong); padding-inline: var(--space-4);
  max-width: calc(1280px - 2 * var(--space-5));
}

.banner-error {
  margin: 0; max-width: none;
  background: var(--critical-bg); color: #f5c2c2;
  border: 1px solid var(--critical-border); padding-inline: var(--space-4);
}
.banner-error svg { color: var(--critical-ink); }

/* ------------------------------------------------------------- layout */

.page { display: grid; gap: var(--space-4); padding-block: var(--space-5); }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: var(--space-4) var(--space-5);
  min-width: 0;
}

.section-head {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
  gap: var(--space-2) var(--space-4); margin-bottom: var(--space-3);
}
.section-title { font-size: var(--text-md); font-weight: 600; }
.section-meta { color: var(--ink-muted); font-size: var(--text-sm); }

/* ------------------------------------------------------------- stat cards */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: var(--space-4); }
.stat { display: grid; gap: var(--space-1); align-content: start; }
.stat-label { font-size: var(--text-sm); font-weight: 500; color: var(--ink-muted); }
.stat-value {
  font-size: var(--text-xl); font-weight: 650; letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums; min-height: 2.4rem;
}
.stat-value.is-text { font-size: var(--text-lg); font-weight: 600; padding-top: 0.35rem; }
.stat-note { font-size: var(--text-sm); color: var(--ink-secondary); font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------- detector */

.detector-state { display: flex; align-items: flex-start; gap: var(--space-3); }
.detector-state svg { flex: none; margin-top: 3px; }
.detector-state .state-title { font-weight: 600; }
.detector-state .state-detail { color: var(--ink-secondary); font-size: var(--text-sm); margin-top: 2px; }
.state-anomalies svg { color: var(--critical-ink); }
.state-clear svg { color: var(--good-ink); }
.state-warming svg, .state-unknown svg { color: var(--ink-muted); }

.progress {
  margin-top: var(--space-2); height: 6px; width: min(320px, 100%);
  background: var(--surface-raised); border-radius: 999px; overflow: hidden;
}
.progress > span { display: block; height: 100%; background: var(--accent); border-radius: inherit; }
.progress-text { font-size: var(--text-sm); color: var(--ink-secondary); margin-top: var(--space-1); font-variant-numeric: tabular-nums; }

.alert-list { list-style: none; padding: 0; margin: var(--space-3) 0 0; display: grid; gap: 1px; background: var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.alert-row {
  display: grid; grid-template-columns: minmax(0, 1.4fr) auto minmax(0, 2fr) auto;
  align-items: center; gap: var(--space-2) var(--space-4);
  background: var(--surface-raised); padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm); font-variant-numeric: tabular-nums;
}
.alert-label { font-weight: 600; overflow-wrap: anywhere; }
.alert-date { color: var(--ink-secondary); white-space: nowrap; }
.alert-change { color: var(--ink); }
.alert-z {
  justify-self: end; color: var(--ink-secondary); white-space: nowrap;
  border-bottom: 1px dotted var(--ink-faint); cursor: help;
}
.pill {
  display: inline-block; margin-left: var(--space-2); padding: 0 var(--space-2);
  font-size: var(--text-xs); font-weight: 600; line-height: 1.6; border-radius: 999px;
  border: 1px solid var(--border-strong); color: var(--ink-secondary); vertical-align: 1px;
}
.pill-new { color: var(--accent-ink); border-color: rgba(57, 135, 229, 0.5); }

.notice { display: flex; gap: var(--space-2); margin-top: var(--space-3); font-size: var(--text-sm); color: var(--ink-secondary); }
.notice svg { flex: none; margin-top: 3px; color: var(--ink-muted); }
.notice ul { margin: var(--space-1) 0 0; padding-left: 1.1rem; }
.notice-stale { color: #ffd98a; }
.notice-stale svg { color: var(--warning); }

/* ------------------------------------------------------------- chart */

.chart-wrapper { position: relative; height: 380px; }
.chart-empty {
  position: absolute; inset: 0; display: grid; place-items: center; text-align: center;
  color: var(--ink-muted); font-size: var(--text-sm); padding: var(--space-4);
}
.chart-empty[hidden] { display: none; }

.table-toggle { margin-top: var(--space-3); font-size: var(--text-sm); }
.table-toggle summary { cursor: pointer; color: var(--ink-secondary); width: fit-content; padding: 2px 0; }
.table-toggle summary:hover { color: var(--ink); }
.table-toggle[open] summary { margin-bottom: var(--space-2); }

/* ------------------------------------------------------------- tables */

.table-scroll { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); font-variant-numeric: tabular-nums; }
.data-table th, .data-table td { padding: var(--space-2) var(--space-3); text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.data-table th { color: var(--ink-muted); font-weight: 500; }
.data-table .num { text-align: right; }
.data-table tbody tr { transition: background var(--ease); }
.data-table tbody tr:hover { background: var(--surface-raised); }
.data-table .muted { color: var(--ink-muted); }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: var(--space-2); vertical-align: -1px; }
.table-note { margin-top: var(--space-2); font-size: var(--text-sm); color: var(--ink-muted); }
.table-note:empty { display: none; }

/* ------------------------------------------------------------- status bar */

.statusbar { padding-block: var(--space-2) var(--space-6); color: var(--ink-muted); font-size: var(--text-sm); display: grid; gap: var(--space-1); }
#status-line { font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------- loading */

.skeleton {
  display: inline-block; width: 7rem; max-width: 100%; border-radius: var(--radius-sm);
  background: linear-gradient(90deg, var(--surface-raised) 0%, var(--surface-hover) 50%, var(--surface-raised) 100%);
  background-size: 200% 100%; animation: shimmer 1.4s ease-in-out infinite;
}
.skeleton-line .skeleton { width: min(24rem, 100%); }
.is-loading .stat-value, .is-loading #detector-body, .is-loading .chart-wrapper { opacity: 0.55; transition: opacity var(--ease); }

@keyframes shimmer { from { background-position: 100% 0; } to { background-position: -100% 0; } }
@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ------------------------------------------------------------- responsive */

@media (max-width: 720px) {
  .topbar-inner, .page, .statusbar { padding-inline: var(--space-4); }
  .banner-synthetic, .banner-notice, .banner-error { margin-inline: var(--space-4); }
  .card { padding: var(--space-4); }
  .chart-wrapper { height: 300px; }
  .alert-row { grid-template-columns: 1fr auto; }
  .alert-change { grid-column: 1 / -1; }
}