:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f0efec;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --accent: #2a78d6;
  --accent-ink: #ffffff;
  --accent-wash: rgba(42, 120, 214, 0.1);
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --good: #006300;
  --good-wash: rgba(12, 163, 12, 0.12);
  --danger: #d03b3b;
  --danger-wash: rgba(208, 59, 59, 0.1);
  --shadow: 0 1px 2px rgba(11, 11, 11, 0.05);
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #262624;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.1);
    --accent: #3987e5;
    --accent-wash: rgba(57, 135, 229, 0.16);
    --series-1: #3987e5;
    --series-2: #d95926;
    --good: #0ca30c;
    --good-wash: rgba(12, 163, 12, 0.16);
    --danger: #e66767;
    --danger-wash: rgba(230, 103, 103, 0.14);
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

h1, h2, h3, p { margin: 0; }
h1 { font-size: 20px; font-weight: 600; }
h2 { font-size: 15px; font-weight: 600; }
a { color: var(--accent); }
code, pre, .mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 12.5px; }
.muted { color: var(--muted); }
.hidden { display: none !important; }

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

.shell { display: grid; grid-template-columns: 216px minmax(0, 1fr); min-height: 100vh; }

.sidebar {
  display: flex; flex-direction: column; gap: 4px;
  padding: 16px 12px; border-right: 1px solid var(--border); background: var(--surface);
  position: sticky; top: 0; height: 100vh;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 16px; font-weight: 600; font-size: 15px; }
.brand-mark { width: 26px; height: 26px; border-radius: 7px; background: var(--accent); display: grid; place-items: center; }
.nav a {
  display: block; padding: 7px 10px; border-radius: 7px; color: var(--ink-2); text-decoration: none;
}
.nav a:hover { background: var(--surface-2); }
.nav a.active { background: var(--accent-wash); color: var(--ink); font-weight: 600; }
.sidebar-foot { margin-top: auto; padding: 8px; display: flex; flex-direction: column; gap: 8px; border-top: 1px solid var(--border); }

.main { padding: 24px 28px 48px; min-width: 0; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.page-head p { color: var(--ink-2); margin-top: 2px; }

.filters { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.filters .spacer { flex: 1; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-pad { padding: 16px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 14px 16px 0; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.loading { opacity: 0.5; transition: opacity 0.15s; }

@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--border); }
  .nav { display: flex; flex-wrap: wrap; gap: 2px; }
  .sidebar-foot { flex-direction: row; align-items: center; justify-content: space-between; margin-top: 8px; }
  .main { padding: 16px; }
}

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

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

.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 7px;
  border: 1px solid var(--border); background: var(--surface); cursor: pointer; text-decoration: none; color: var(--ink);
  white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn:disabled { opacity: 0.55; cursor: default; }
.btn-primary { background: var(--accent); border-color: transparent; color: var(--accent-ink); font-weight: 600; }
.btn-primary:hover { background: var(--accent); filter: brightness(1.08); }
.btn-danger { color: var(--danger); }
.btn-danger:hover { background: var(--danger-wash); }
.btn-sm { padding: 3px 8px; font-size: 12.5px; }

input[type="text"], input[type="password"], input[type="number"], input[type="url"], input[type="date"], select {
  padding: 6px 9px; border-radius: 7px; border: 1px solid var(--axis); background: var(--surface); min-width: 0;
}
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible, svg:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px;
}

.segmented { display: inline-flex; border: 1px solid var(--border); border-radius: 7px; overflow: hidden; background: var(--surface); }
.segmented button { border: 0; background: transparent; padding: 6px 11px; cursor: pointer; color: var(--ink-2); }
.segmented button + button { border-left: 1px solid var(--border); }
.segmented button:hover { background: var(--surface-2); }
.segmented button[aria-pressed="true"] { background: var(--accent-wash); color: var(--ink); font-weight: 600; }

.field { display: flex; flex-direction: column; gap: 4px; }
.field > span { font-weight: 600; font-size: 13px; }
.field small { color: var(--muted); }
.field input, .field select { width: 100%; }
.check { display: flex; align-items: flex-start; gap: 8px; }
.check input { margin-top: 3px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 560px) { .form-grid { grid-template-columns: 1fr; } }
.form-error { color: var(--danger); min-height: 1.5em; }

/* ---- auth screens ---- */

.auth { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.auth .card { width: 100%; max-width: 380px; padding: 24px; }
.auth form { display: flex; flex-direction: column; gap: 12px; margin-top: 16px; }
.auth .btn { justify-content: center; }
.auth p { color: var(--ink-2); margin-top: 4px; }

/* ---- stat tiles ---- */

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.tile { padding: 14px 16px; }
.tile .label { color: var(--ink-2); font-size: 13px; }
.tile .value { font-size: 26px; font-weight: 600; line-height: 1.25; margin-top: 2px; }
.tile .note { color: var(--muted); font-size: 12.5px; }

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

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
/* Cells never wrap; a table wider than its card scrolls inside .table-wrap instead. */
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--grid); vertical-align: top; white-space: nowrap; }
th:first-child, td:first-child { padding-left: 16px; }
th:last-child, td:last-child { padding-right: 16px; }
th { font-size: 12.5px; font-weight: 600; color: var(--ink-2); }
tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.actions { text-align: right; }
td.actions .btn + .btn { margin-left: 4px; }
td .sub { color: var(--muted); font-size: 12.5px; }
.empty { padding: 36px 16px; text-align: center; color: var(--ink-2); }
.empty .btn { margin-top: 12px; }

.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; background: var(--surface-2); color: var(--ink-2); }
.badge-good { background: var(--good-wash); color: var(--good); }
.badge-accent { background: var(--accent-wash); color: var(--ink); }

.copy-row { display: flex; align-items: center; gap: 6px; }

/* Share-of-max bar behind a breakdown row's install count. */
.bar-cell { min-width: 140px; }
.bar-track { height: 6px; border-radius: 3px; }
.bar-fill { height: 6px; border-radius: 0 3px 3px 0; background: var(--series-1); min-width: 2px; }

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

.chart { position: relative; padding: 8px 16px 12px; }
.chart svg { display: block; width: 100%; overflow: visible; }
.chart text { fill: var(--muted); font-size: 11.5px; font-variant-numeric: tabular-nums; }
.chart .grid { stroke: var(--grid); stroke-width: 1; }
.chart .baseline { stroke: var(--axis); stroke-width: 1; }
.chart .crosshair { stroke: var(--axis); stroke-width: 1; }
.chart .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .dot { stroke: var(--surface); stroke-width: 2; }
.legend { display: flex; gap: 16px; color: var(--ink-2); font-size: 13px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.key { display: inline-block; width: 14px; height: 2px; border-radius: 1px; }
.tooltip {
  position: absolute; pointer-events: none; z-index: 2; min-width: 130px; padding: 8px 10px; border-radius: 8px;
  background: var(--surface); border: 1px solid var(--border); box-shadow: 0 4px 14px rgba(11, 11, 11, 0.12); font-size: 12.5px;
}
.tooltip .t-date { color: var(--ink-2); margin-bottom: 4px; }
.tooltip .t-row { display: flex; align-items: center; gap: 6px; }
.tooltip .t-row b { margin-left: auto; padding-left: 12px; font-variant-numeric: tabular-nums; }
details.data-table summary { cursor: pointer; padding: 10px 16px; color: var(--ink-2); border-top: 1px solid var(--grid); }

/* ---- tabs, dialogs, toasts, code ---- */

.tabs { display: flex; gap: 2px; flex-wrap: wrap; }
.tabs button { border: 0; background: transparent; padding: 5px 10px; border-radius: 7px; cursor: pointer; color: var(--ink-2); }
.tabs button:hover { background: var(--surface-2); }
.tabs button[aria-selected="true"] { background: var(--accent-wash); color: var(--ink); font-weight: 600; }

dialog {
  border: 1px solid var(--border); border-radius: 12px; padding: 0; background: var(--surface); color: var(--ink);
  width: min(600px, calc(100vw - 32px)); max-height: calc(100vh - 32px);
}
dialog::backdrop { background: rgba(0, 0, 0, 0.4); }
dialog form { display: flex; flex-direction: column; gap: 14px; padding: 20px; }
.dialog-foot { display: flex; justify-content: flex-end; align-items: center; gap: 8px; }
.dialog-foot .form-error { margin-right: auto; }

#toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 10; }
.toast { padding: 9px 14px; border-radius: 8px; background: var(--ink); color: var(--page); box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2); max-width: 360px; }
.toast.error { background: var(--danger); color: #fff; }

.snippet { position: relative; }
.snippet pre {
  margin: 0; padding: 14px 16px; border-radius: 8px; background: var(--surface-2); overflow-x: auto; line-height: 1.55;
}
.snippet .btn { position: absolute; top: 8px; right: 8px; }
.prose { display: flex; flex-direction: column; gap: 10px; max-width: 820px; }
.prose p, .prose li { color: var(--ink-2); }
.prose ol, .prose ul { margin: 0; padding-left: 20px; }