:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --bg-elevated: #ffffff;
  --bg-subtle: #f0f2f5;
  --border: #e3e6ea;
  --border-strong: #d2d7de;
  --text: #14171a;
  --text-muted: #6b7280;
  --text-faint: #9aa1ab;
  --accent: #2f6fed;
  --accent-soft: rgba(47, 111, 237, 0.1);
  --positive: #12a150;
  --negative: #e0393e;
  --warning: #c2740a;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 1px 3px rgba(16, 24, 40, 0.06);
  --radius: 12px;
  --radius-sm: 8px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

:root[data-theme='dark'] {
  color-scheme: dark;
  --bg: #0e1116;
  --bg-elevated: #161a21;
  --bg-subtle: #1c212a;
  --border: #262c36;
  --border-strong: #333b47;
  --text: #e7eaee;
  --text-muted: #99a1ad;
  --text-faint: #6d7684;
  --accent: #5b8dff;
  --accent-soft: rgba(91, 141, 255, 0.14);
  --positive: #35c07a;
  --negative: #f2686c;
  --warning: #e0a338;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
}

button,
select,
input {
  font: inherit;
  color: inherit;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--bg-elevated) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar__inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand__mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--accent);
  display: grid;
  place-items: center;
  color: #fff;
  flex: none;
}

.brand__title {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand__sub {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}

.topbar__spacer {
  flex: 1 1 auto;
}

.controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.layout {
  max-width: 1440px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.sidenav {
  position: sticky;
  top: 76px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidenav a {
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  border-left: 2px solid transparent;
}

.sidenav a:hover {
  background: var(--bg-subtle);
  color: var(--text);
}

.sidenav a.is-active {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
  font-weight: 500;
}

.content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* ---------- controls ---------- */

.segmented {
  display: inline-flex;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2px;
  gap: 2px;
}

.segmented button {
  border: 0;
  background: transparent;
  padding: 5px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.segmented button:hover:not(:disabled) {
  color: var(--text);
}

.segmented button[aria-pressed='true'] {
  background: var(--bg-elevated);
  color: var(--text);
  box-shadow: var(--shadow);
  font-weight: 500;
}

.segmented button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--positive);
  flex: none;
}

.dot--off {
  background: var(--text-faint);
}

.field {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.select,
.btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 13px;
  transition: border-color 0.15s, background 0.15s;
}

.select:hover,
.btn:hover {
  border-color: var(--border-strong);
}

.select:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.btn--icon {
  padding: 6px;
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
}

.btn[aria-pressed='true'] {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.btn.is-busy svg {
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------- sections ---------- */

.section__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
}

.section__head h2 {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.01em;
}

.section__hint {
  font-size: 12px;
  color: var(--text-faint);
}

.grid {
  display: grid;
  gap: 12px;
}

.grid--kpi {
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.grid--half {
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
}

.grid--third {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  min-width: 0;
}

.card__label {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 6px;
}

.card__value {
  font-size: 24px;
  font-weight: 650;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.card__value small {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 2px;
}

.card__foot {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 6px;
}

.delta {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.delta--up {
  color: var(--positive);
}

.delta--down {
  color: var(--negative);
}

.delta--flat {
  color: var(--text-faint);
}

.card--chart {
  padding: 16px 16px 8px;
}

.card__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
}

.chart {
  width: 100%;
  height: 300px;
}

.chart--tall {
  height: 380px;
}

.chart--short {
  height: 240px;
}

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

.barlist {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 10px;
}

.barlist__row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 5px 8px;
  border-radius: 6px;
  overflow: hidden;
  font-size: 13px;
}

.barlist__fill {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--accent-soft);
  border-radius: 6px;
}

.barlist__key,
.barlist__val {
  position: relative;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.barlist__val {
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* ---------- states ---------- */

.skeleton {
  background: linear-gradient(90deg, var(--bg-subtle) 25%, var(--border) 50%, var(--bg-subtle) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: 6px;
  color: transparent !important;
}

@keyframes shimmer {
  to {
    background-position: -200% 0;
  }
}

.empty {
  display: grid;
  place-items: center;
  min-height: 120px;
  color: var(--text-faint);
  font-size: 13px;
  text-align: center;
  padding: 16px;
}

.banner {
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}

.banner--warn {
  border-color: color-mix(in srgb, var(--warning) 40%, var(--border));
  background: color-mix(in srgb, var(--warning) 8%, var(--bg-elevated));
}

.banner--error {
  border-color: color-mix(in srgb, var(--negative) 40%, var(--border));
  background: color-mix(in srgb, var(--negative) 8%, var(--bg-elevated));
}

.banner ul {
  margin: 4px 0 0;
  padding-left: 18px;
}

.banner code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--bg-subtle);
  padding: 1px 5px;
  border-radius: 4px;
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--accent);
  width: 0;
  transition: width 0.25s ease, opacity 0.3s ease;
  z-index: 60;
}

[hidden] {
  display: none !important;
}

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

.footer {
  max-width: 1440px;
  margin: 0 auto;
  padding: 8px 20px 32px;
  color: var(--text-faint);
  font-size: 12px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: space-between;
}

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

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .sidenav {
    position: static;
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 4px;
    gap: 4px;
  }
  .sidenav a {
    border-left: 0;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
  }
  .sidenav a.is-active {
    border-left: 0;
    border-bottom-color: var(--accent);
  }
}

@media (max-width: 720px) {
  .topbar__inner,
  .layout,
  .footer {
    padding-left: 12px;
    padding-right: 12px;
  }
  .controls {
    width: 100%;
  }
  .brand__sub {
    display: none;
  }
  .chart {
    height: 260px;
  }
  .card__value {
    font-size: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}