:root {
  color-scheme: light;
  --surface-0: #f4f3f0;
  --surface-1: #fcfcfb;
  --border: #e2e1dc;
  --grid: #ecebe7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #7a7974;
  --accent: #2a78d6;
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --good: #008300;
  --critical: #d03b3b;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --surface-0: #111110;
    --surface-1: #1a1a19;
    --border: #2e2e2c;
    --grid: #262624;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #8f8e86;
    --accent: #3987e5;
    --series-1: #3987e5;
    --series-2: #d95926;
    --good: #3fae3f;
    --critical: #e66767;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--surface-0);
  color: var(--text-primary);
}
main { max-width: 1400px; margin: 0 auto; padding: 20px 16px 48px; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 15px; margin: 0 0 12px; }
h3 { font-size: 13px; margin: 16px 0 8px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .04em; }
.subtitle { color: var(--text-secondary); margin: 0 0 20px; }
.muted { color: var(--text-muted); }

.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 12px 16px; background: var(--surface-1); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; }
.topbar nav { display: flex; gap: 4px; }
.topbar nav a {
  color: var(--text-secondary); text-decoration: none; padding: 6px 12px; border-radius: 6px;
}
.topbar nav a.active, .topbar nav a:hover { background: var(--surface-0); color: var(--text-primary); }

.card { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.layout { display: grid; grid-template-columns: 360px 1fr; gap: 16px; align-items: start; }
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }
.layout > * { min-width: 0; }
.stack { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; min-width: 0; }
.two-col { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 16px; align-items: start; }
.two-col.wide-right { grid-template-columns: minmax(0,1fr) minmax(0,2fr); }
@media (max-width: 900px) { .two-col, .two-col.wide-right { grid-template-columns: 1fr; } }

label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
input, select {
  width: 100%; padding: 7px 9px; font: inherit; color: var(--text-primary);
  background: var(--surface-0); border: 1px solid var(--border); border-radius: 6px;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 10px; }
.row.three { grid-template-columns: 1fr 1fr 1fr; }
.field { margin-bottom: 10px; }

.filter { border-top: 1px solid var(--border); padding: 10px 0 2px; }
.filter > .toggle { display: flex; align-items: center; gap: 8px; font-weight: 600; cursor: pointer; margin-bottom: 8px; }
.filter > .toggle input { width: auto; }
.filter > .toggle .hint { font-weight: 400; color: var(--text-muted); font-size: 12px; }
.filter .params { display: none; }
.filter.on .params { display: block; }

button {
  font: inherit; font-weight: 600; cursor: pointer; border-radius: 6px; padding: 9px 14px;
  border: 1px solid var(--border); background: var(--surface-0); color: var(--text-primary);
}
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; width: 100%; }
button:disabled { opacity: .6; cursor: default; }
.segmented { display: inline-flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.segmented button { border: 0; border-radius: 0; padding: 5px 10px; font-weight: 500; background: transparent; }
.segmented button.active { background: var(--surface-0); color: var(--accent); font-weight: 600; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.tile { background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.tile .label { font-size: 12px; color: var(--text-secondary); }
.tile .value { font-size: 22px; font-weight: 650; font-variant-numeric: tabular-nums; margin-top: 2px; }
.tile .sub { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.pos { color: var(--good); }
.neg { color: var(--critical); }

.chart-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.chart-box { position: relative; height: 320px; }
.chart-box.small { height: 140px; }
.legend { display: flex; gap: 16px; font-size: 12px; color: var(--text-secondary); }
.legend span::before {
  content: ""; display: inline-block; width: 12px; height: 2px; vertical-align: middle; margin-right: 6px;
  background: var(--swatch);
}

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: right; padding: 6px 8px; border-bottom: 1px solid var(--grid); white-space: nowrap; }
th { font-size: 12px; font-weight: 600; color: var(--text-secondary); position: sticky; top: 0; background: var(--surface-1); }
th:first-child, td:first-child { text-align: left; }
.scroll { max-height: 420px; overflow: auto; }
td a { color: var(--accent); text-decoration: none; }

.status { padding: 10px 12px; border-radius: 6px; background: var(--surface-0); color: var(--text-secondary); }
.status.error { color: var(--critical); }
.empty { text-align: center; padding: 60px 16px; color: var(--text-muted); }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 4px 16px; }
.stats-grid div { display: flex; justify-content: space-between; border-bottom: 1px solid var(--grid); padding: 5px 0; }
.stats-grid dt { color: var(--text-secondary); }
.stats-grid dd { margin: 0; font-variant-numeric: tabular-nums; font-weight: 600; }
.range-row { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr) auto; gap: 6px; margin-bottom: 10px; }
.range-row select { grid-column: 1 / -1; }
.range-row button { padding: 4px 10px; }
.inline-check { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--text-primary); }
.inline-check input { width: auto; }
a.button {
  display: inline-block; font-weight: 600; text-decoration: none; border-radius: 6px; padding: 7px 14px;
  border: 1px solid var(--border); background: var(--surface-0); color: var(--text-primary);
}
a.button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.fav-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.fav-actions button { padding: 7px 14px; }
button.delete.confirm { color: #fff; background: var(--critical); border-color: var(--critical); }
.card a:not(.button) { color: var(--accent); }
#table th[data-sort] { cursor: pointer; user-select: none; }
#table th[data-sort]:hover { color: var(--text-primary); }
#table td.name { text-align: left; max-width: 220px; overflow: hidden; text-overflow: ellipsis; color: var(--text-secondary); }
#table th:nth-child(2) { text-align: left; }

/* --- sign-in & landing page ------------------------------------------------------------- */
a.brand { color: var(--text-primary); text-decoration: none; }
.user-menu { margin-left: auto; display: flex; align-items: center; gap: 10px; font-size: 13px; }
.user-menu img { border-radius: 50%; }
.user-menu form { margin: 0; }
.user-name { color: var(--text-secondary); max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.link-button { background: none; border: 0; padding: 4px 6px; color: var(--accent); font-weight: 500; cursor: pointer; }
.link-button:hover { text-decoration: underline; }
@media (max-width: 700px) { .user-name { display: none; } .topbar { flex-wrap: wrap; gap: 8px 16px; } }

/* Google branding: white button, Google "G", Roboto-like label. */
.google-button {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px; border-radius: 6px;
  background: #fff; color: #1f1f1f; border: 1px solid #747775; text-decoration: none;
  font: 500 14px/1.2 Roboto, system-ui, sans-serif; white-space: nowrap;
}
.google-button:hover { background: #f2f2f2; }
.google-button.large { padding: 11px 20px; font-size: 16px; }

.welcome {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  max-width: 1400px; margin: 16px auto 0; padding: 12px 16px; border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent) 12%, var(--surface-1)); border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
}
@media (max-width: 1432px) { .welcome { margin: 16px 16px 0; } }

.hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 40px; align-items: center; padding: 32px 0 40px; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; gap: 24px; padding-top: 8px; } }
.hero h1 { font-size: clamp(28px, 4vw, 44px); line-height: 1.12; margin: 12px 0 16px; letter-spacing: -0.01em; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; color: var(--good);
  background: color-mix(in srgb, var(--good) 12%, transparent); padding: 4px 10px; border-radius: 999px;
}
.lead { font-size: 17px; color: var(--text-secondary); max-width: 38em; margin: 0 0 24px; }
.cta-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.cta-alt a, .data-note a { color: var(--accent); }
.fine-print { font-size: 12px; color: var(--text-muted); margin-top: 14px; }

.hero-visual { margin: 0; }
.hero-visual-head { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: 13px; }
.hero-visual svg { width: 100%; height: auto; display: block; }
.hero-visual .axis { stroke: var(--grid); stroke-width: 1; }
.hero-visual polyline { fill: none; stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.hero-visual .strat { stroke: var(--series-1); }
.hero-visual .bench { stroke: var(--series-2); }
.hero-visual .legend { margin-top: 8px; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.feature h2 { font-size: 16px; margin-bottom: 6px; }
.feature p { margin: 0; color: var(--text-secondary); }
.how { margin-top: 16px; }
.how ol { margin: 0; padding-left: 20px; display: grid; gap: 8px; color: var(--text-secondary); }
.how b { color: var(--text-primary); }
.data-note { max-width: 60em; margin: 24px 0 0; font-size: 13px; }
.final-cta { text-align: center; padding: 32px 0 8px; }
.final-cta h2 { font-size: 22px; }

/* --- feedback ----------------------------------------------------------------------------- */
.feedback-button { padding: 5px 12px; font-weight: 500; }
dialog#feedback-dialog {
  width: min(520px, calc(100vw - 32px)); border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface-1); color: var(--text-primary); padding: 20px;
}
dialog#feedback-dialog::backdrop { background: rgb(0 0 0 / 0.35); }
dialog#feedback-dialog h2 { font-size: 17px; margin-bottom: 4px; }
dialog#feedback-dialog .segmented { display: flex; flex-wrap: wrap; }
dialog#feedback-dialog .segmented label {
  display: flex; align-items: center; gap: 6px; margin: 0; padding: 6px 10px; cursor: pointer;
  font-size: 13px; color: var(--text-primary);
}
dialog#feedback-dialog .segmented input { width: auto; }
dialog#feedback-dialog .segmented label:has(input:checked) { background: var(--surface-0); color: var(--accent); font-weight: 600; }
textarea {
  width: 100%; padding: 8px 10px; font: inherit; color: var(--text-primary); resize: vertical;
  background: var(--surface-0); border: 1px solid var(--border); border-radius: 6px;
}
textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.feedback-item { border-top: 1px solid var(--border); padding: 14px 0; display: grid; gap: 6px; }
.feedback-item:first-child { border-top: 0; }
.feedback-item .meta { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; font-size: 12px; color: var(--text-muted); }
.feedback-item .message { white-space: pre-wrap; overflow-wrap: anywhere; }
.feedback-item select { width: auto; padding: 3px 6px; font-size: 12px; }
.pill { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--surface-0); color: var(--text-secondary); }
.pill.idea { color: var(--accent); }
.pill.bug { color: var(--critical); }

/* --- language picker ---------------------------------------------------------------------- */
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.language-picker { margin: 0; }
.language-picker select { width: auto; padding: 4px 6px; font-size: 13px; }