:root {
  --bg:        #0A0E14;
  --panel:     #0F1419;
  --panel-2:   #131922;
  --border:    #1F2630;
  --border-2:  #283040;
  --text:      #E6EDF3;
  --muted:     #8B98A6;
  --muted-2:   #5A6573;
  --accent:    #4A9EFF;
  --accent-2:  #7C5CFF;
  --good:      #3FB68B;
  --warn:      #E8A23B;
  --bad:       #E5484D;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Consolas, monospace;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html, body {
  background: var(--bg); color: var(--text);
  margin: 0; padding: 0;
  font-family: var(--sans); font-size: 13px; line-height: 1.55;
  font-feature-settings: 'cv11', 'ss01';
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* topbar */
header.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg) 100%);
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: saturate(180%) blur(8px);
}
.topbar .brand {
  font-weight: 600; letter-spacing: -0.01em; font-size: 14px;
  display: flex; align-items: center; gap: 8px;
}
.topbar .brand::before {
  content: ""; display: inline-block; width: 8px; height: 8px;
  background: var(--accent); border-radius: 2px;
  box-shadow: 0 0 12px var(--accent);
}
.topbar nav { display: flex; gap: 2px; margin-left: 12px; }
.topbar nav a {
  padding: 5px 10px; border-radius: 6px;
  color: var(--muted); font-size: 13px; font-weight: 500;
  text-transform: capitalize;
  transition: color 120ms, background 120ms;
}
.topbar nav a:hover { color: var(--text); background: var(--panel-2); text-decoration: none; }
.topbar nav a.active { color: var(--text); background: var(--panel-2); }

.topbar .spacer { margin-left: auto; }
.topbar .pill {
  padding: 4px 10px; border-radius: 6px;
  background: var(--panel-2); border: 1px solid var(--border);
  color: var(--muted); font-size: 12px; font-family: var(--mono);
}

/* main */
main#app { padding: 24px 20px; max-width: 1400px; margin: 0 auto; }

/* card */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
}
.card h2 { margin: 0 0 14px; font-size: 16px; font-weight: 600; letter-spacing: -0.01em; }
.card h3 { margin: 0 0 10px; font-size: 13px; font-weight: 600; color: var(--text); }

/* layout */
.row { display: grid; gap: 16px; }
.row.cols-7 { grid-template-columns: repeat(7, minmax(0, 1fr)); }
.row.cols-4 { grid-template-columns: repeat(4, 1fr); }
.row.cols-3 { grid-template-columns: repeat(3, 1fr); }
.row.cols-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 1100px) {
  .row.cols-7 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .row.cols-7 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .row.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .row.cols-2 { grid-template-columns: 1fr; }
}

/* KPI */
.kpi { padding: 16px; min-width: 0; }
.kpi .label {
  color: var(--muted); text-transform: uppercase;
  font-size: 10px; letter-spacing: 0.08em; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.kpi .value {
  font-family: var(--mono); font-size: 22px; font-weight: 500;
  font-variant-numeric: tabular-nums; letter-spacing: -0.03em;
  margin-top: 6px; line-height: 1.1;
  white-space: nowrap;
}
.kpi.cost .value { color: var(--good); }
/* compact tokens like "4.1B" are short — give them a touch more room */
.kpi .value.big { font-size: 24px; }
.kpi .delta { font-family: var(--mono); font-size: 12px; margin-top: 4px; }
.kpi .delta.up   { color: var(--good); }
.kpi .delta.down { color: var(--bad);  }
.kpi .sub { color: var(--muted); font-size: 11px; margin-top: 2px; }

/* tables */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td {
  text-align: left; padding: 9px 12px;
  border-bottom: 1px solid var(--border);
}
th {
  color: var(--muted); font-weight: 600;
  text-transform: uppercase; font-size: 10px; letter-spacing: 0.06em;
}
tbody tr { transition: background 100ms; }
tbody tr:hover { background: var(--panel-2); }
td.num, th.num {
  font-family: var(--mono); text-align: right;
  font-variant-numeric: tabular-nums;
}
td.mono { font-family: var(--mono); color: var(--muted); }

/* badges */
.badge {
  display: inline-block; padding: 2px 7px; border-radius: 4px;
  font-size: 11px; background: var(--panel-2); color: var(--muted);
  border: 1px solid var(--border);
  font-family: var(--mono); font-weight: 500;
}
.badge.opus    { color: var(--accent-2); border-color: rgba(124,92,255,0.3); background: rgba(124,92,255,0.08); }
.badge.sonnet  { color: var(--accent);   border-color: rgba(74,158,255,0.3); background: rgba(74,158,255,0.08); }
.badge.haiku   { color: var(--good);     border-color: rgba(63,182,139,0.3); background: rgba(63,182,139,0.08); }

/* drawer */
#drawer .card { margin-top: 16px; border-color: var(--border-2); }
#drawer pre {
  font-family: var(--mono); white-space: pre-wrap; word-break: break-word;
  background: var(--bg); padding: 12px; border-radius: 6px;
  border: 1px solid var(--border);
  max-height: 400px; overflow-y: auto;
  font-size: 12px; line-height: 1.5;
}

/* buttons */
button, select {
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 6px 12px; font-family: var(--sans); font-size: 13px;
  cursor: pointer;
}
button:hover, select:hover { border-color: var(--border-2); }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.primary:hover { background: #5BA8FF; }
button.ghost { background: transparent; color: var(--muted); }

/* tip rows */
.tip {
  border: 1px solid var(--border); border-radius: 8px;
  padding: 14px; margin: 10px 0; background: var(--panel-2);
}
.tip-head { display: flex; align-items: center; gap: 10px; }
.tip-head strong { font-size: 13px; }
.tip-body { margin: 8px 0 0; color: var(--muted); }

/* time-range tabs */
.range-tabs { display: inline-flex; background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px; padding: 2px; }
.range-tabs button {
  background: transparent; border: 0; padding: 4px 10px; border-radius: 4px;
  color: var(--muted); font-size: 12px; font-family: var(--mono);
}
.range-tabs button.active { background: var(--bg); color: var(--text); }

/* privacy blur */
.blur-sensitive { transition: filter 120ms; }
body.privacy-on .blur-sensitive { filter: blur(6px); }

/* first-run modal */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(10,14,20,0.85);
  display: grid; place-items: center; z-index: 50;
  backdrop-filter: blur(8px);
}
.modal {
  background: var(--panel); border: 1px solid var(--border-2);
  border-radius: 12px; padding: 24px; max-width: 460px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.modal h2 { margin: 0 0 8px; }
.modal p { color: var(--muted); margin: 0 0 16px; }
.modal .actions { display: flex; gap: 8px; align-items: center; margin-top: 16px; }

/* utility */
.muted { color: var(--muted); }
.flex { display: flex; align-items: center; gap: 8px; }
.spacer { flex: 1; }
hr.divider { border: 0; border-top: 1px solid var(--border); margin: 16px 0; }

/* glossary */
.glossary summary {
  cursor: pointer;
  list-style: none;
  display: flex; align-items: center; gap: 8px;
}
.glossary summary::-webkit-details-marker { display: none; }
.glossary summary::before {
  content: "▸"; color: var(--muted); font-size: 11px;
  transition: transform 120ms;
}
.glossary[open] summary::before { transform: rotate(90deg); }
.glossary dl {
  margin: 14px 0 0; display: grid;
  grid-template-columns: 160px 1fr; gap: 10px 20px;
}
.glossary dt {
  color: var(--text); font-weight: 600; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.04em;
}
.glossary dd { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.glossary dd code { background: var(--panel-2); padding: 1px 5px; border-radius: 3px; font-family: var(--mono); font-size: 12px; }
@media (max-width: 720px) {
  .glossary dl { grid-template-columns: 1fr; gap: 4px 0; }
  .glossary dt { margin-top: 10px; }
}