:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-muted: #f0f2f5;
  --border: #dde1e7;
  --text: #1c2330;
  --text-muted: #5d6778;
  --accent: #1f5fbf;
  --accent-text: #ffffff;
  --good: #1d7a46;
  --good-bg: #e5f4ea;
  --bad: #b3261e;
  --bad-bg: #fbe9e7;
  --warn: #8a5a00;
  --warn-bg: #fdf3dc;
  --radius: 8px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12161d;
    --surface: #1a2029;
    --surface-muted: #222a35;
    --border: #2e3744;
    --text: #e6e9ee;
    --text-muted: #9aa4b2;
    --accent: #6ea2f5;
    --accent-text: #0d1320;
    --good: #6fcf97;
    --good-bg: #173524;
    --bad: #f28b82;
    --bad-bg: #3d1d1b;
    --warn: #f2c46d;
    --warn-bg: #3a2e14;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #12161d;
  --surface: #1a2029;
  --surface-muted: #222a35;
  --border: #2e3744;
  --text: #e6e9ee;
  --text-muted: #9aa4b2;
  --accent: #6ea2f5;
  --accent-text: #0d1320;
  --good: #6fcf97;
  --good-bg: #173524;
  --bad: #f28b82;
  --bad-bg: #3d1d1b;
  --warn: #f2c46d;
  --warn-bg: #3a2e14;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

h2 { font-size: 1.05rem; margin: 0 0 12px; }
.section-gap { margin-top: 28px; }
.muted { color: var(--text-muted); }
.small { font-size: 0.85rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.app-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.app-header__inner {
  max-width: 1200px; margin: 0 auto; padding: 14px 16px;
  display: flex; align-items: baseline; gap: 12px;
}
.brand { font-weight: 700; letter-spacing: 0.04em; color: var(--accent); }
.app-header__title { color: var(--text-muted); }

.page { max-width: 1200px; margin: 0 auto; padding: 20px 16px 48px; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone:focus-visible, .dropzone.is-over {
  border-color: var(--accent);
  background: var(--surface-muted);
  outline: none;
}
.dropzone__title { font-weight: 600; margin: 0 0 4px; }
.dropzone p:last-of-type { margin: 0; }

.slots {
  list-style: none; margin: 16px 0 0; padding: 0;
  display: grid; gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.slot {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  display: flex; flex-direction: column; gap: 6px;
  min-width: 0;
}
.slot.is-filled { border-color: var(--good); background: var(--good-bg); }
.slot__head { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.slot__label { font-weight: 600; }
.slot__tag { font-size: 0.75rem; color: var(--text-muted); }
.slot__file { font-size: 0.85rem; overflow-wrap: anywhere; }
.slot__buttons { display: flex; gap: 8px; }

.options { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.field { display: flex; flex-direction: column; gap: 4px; }
.field span { font-weight: 600; font-size: 0.9rem; }

input[type="month"], select {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 6px; padding: 7px 9px; width: 100%;
}

.actions { display: flex; align-items: center; gap: 14px; margin-top: 24px; flex-wrap: wrap; }

.button {
  font: inherit; font-size: 0.9rem; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  border-radius: 6px; padding: 6px 12px;
}
.button:hover { border-color: var(--accent); }
.button--small { padding: 2px 8px; font-size: 0.8rem; }
.button--primary {
  background: var(--accent); color: var(--accent-text); border-color: var(--accent);
  font-weight: 600; padding: 9px 20px; font-size: 0.95rem;
}
.button--accent { border-color: var(--accent); color: var(--accent); font-weight: 600; }
.button:disabled { opacity: 0.5; cursor: not-allowed; }

.status { color: var(--text-muted); }
.status.is-error { color: var(--bad); }

.results { margin-top: 24px; }

.tiles { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
@media (max-width: 480px) { .tile { padding: 10px 12px; } .tile__value { font-size: 1.2rem; } }
.tile {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px;
}
.tile__label { font-size: 0.8rem; color: var(--text-muted); }
.tile__value { font-size: 1.45rem; font-weight: 650; font-variant-numeric: tabular-nums; }
.tile__note { font-size: 0.8rem; color: var(--text-muted); }
.tile--good .tile__value { color: var(--good); }
.tile--bad .tile__value { color: var(--bad); }

.callout {
  margin-top: 12px; padding: 10px 14px; border-radius: var(--radius);
  background: var(--warn-bg); color: var(--warn);
}
.callout ul { margin: 4px 0 0; padding-left: 18px; }

.tabs {
  display: flex; gap: 4px; margin-top: 24px;
  border-bottom: 1px solid var(--border); overflow-x: auto;
}
.tab {
  font: inherit; background: none; border: none; color: var(--text-muted);
  padding: 10px 14px; cursor: pointer; border-bottom: 2px solid transparent; white-space: nowrap;
}
.tab[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }

.tab-panel {
  background: var(--surface); border: 1px solid var(--border); border-top: none;
  border-radius: 0 0 var(--radius) var(--radius); padding: 14px 16px 18px;
}

.toolbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; flex-wrap: wrap; margin-bottom: 12px;
}
.toolbar__buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.checkbox { display: flex; gap: 6px; align-items: center; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { padding: 7px 10px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
th { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--text-muted); background: var(--surface-muted); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.desc { white-space: normal; min-width: 220px; }
tr.is-flagged td { background: var(--bad-bg); }
tfoot td { font-weight: 650; border-bottom: none; }
.diff-bad { color: var(--bad); font-weight: 600; }

.badge {
  display: inline-block; padding: 1px 8px; border-radius: 999px;
  font-size: 0.75rem; font-weight: 600;
}
.badge--good { background: var(--good-bg); color: var(--good); }
.badge--bad { background: var(--bad-bg); color: var(--bad); }
.badge--warn { background: var(--warn-bg); color: var(--warn); }

.bar { height: 6px; background: var(--surface-muted); border-radius: 3px; min-width: 80px; }
.bar > span { display: block; height: 100%; background: var(--accent); border-radius: 3px; }

.details { display: grid; grid-template-columns: max-content 1fr; gap: 6px 20px; margin: 0; }
.details dt { color: var(--text-muted); }
.details dd { margin: 0; font-variant-numeric: tabular-nums; }

.empty { color: var(--text-muted); padding: 12px 0; }

/* ---------- Usage report ---------- */

.report__header { margin: 4px 0 16px; }
.report__eyebrow { margin: 0; font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.report__title { margin: 2px 0 0; font-size: 1.5rem; font-weight: 650; }
.report__section { margin-top: 32px; }
.report__section h4 { font-size: 1rem; margin: 0 0 12px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.report__lede { margin: 0 0 14px; max-width: 70ch; }
.tiles--report { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
.tiles--report .tile__value { font-variant-numeric: normal; }
@media (max-width: 480px) { .tab-panel { padding: 12px; } }

.findings { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.finding {
  border: 1px solid var(--border); border-left-width: 4px; border-radius: var(--radius);
  padding: 12px 14px; break-inside: avoid;
}
.finding--good { border-left-color: var(--good); }
.finding--bad { border-left-color: var(--bad); }
.finding--warn { border-left-color: var(--warn); }
.finding--neutral { border-left-color: var(--text-muted); }
.finding__head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.finding__amount { font-weight: 650; }
.finding__title { margin: 6px 0 2px; font-weight: 600; }
.finding__detail { margin: 0; color: var(--text-muted); max-width: 90ch; }
.finding__action { margin: 6px 0 0; font-size: 0.9rem; max-width: 90ch; }
.badge--neutral { background: var(--surface-muted); color: var(--text-muted); }
.badge__icon { font-weight: 700; }

.chart-grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.chart-grid--wide-first { grid-template-columns: 2fr 1fr; }
@media (max-width: 760px) { .chart-grid--wide-first { grid-template-columns: 1fr; } }
.chart { margin: 0 0 20px; break-inside: avoid; min-width: 0; }
.chart figcaption { font-weight: 600; font-size: 0.9rem; margin-bottom: 10px; }

/* Horizontal bars: <= 20px thick, 4px rounded data end, square at the baseline. */
.hbars { display: grid; gap: 4px; }
.hbar {
  display: grid; grid-template-columns: 1fr auto; grid-template-areas: "label value" "bar bar";
  column-gap: 12px; row-gap: 3px; padding: 4px 6px; border-radius: 4px; cursor: default;
}
.hbar:hover, .hbar:focus-visible { background: var(--surface-muted); outline: none; }
.hbar__label { grid-area: label; font-size: 0.85rem; overflow-wrap: anywhere; }
.hbar__track { grid-area: bar; height: 14px; display: flex; align-items: center; }
.hbar__bar { display: block; height: 12px; background: var(--accent); border-radius: 0 4px 4px 0; }
.hbar__value { grid-area: value; font-size: 0.85rem; font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.hbar__share { color: var(--text-muted); }

/* Columns on a shared baseline. */
.cols {
  display: grid; grid-template-columns: repeat(var(--cols), 1fr); gap: 2px;
  align-items: end; border-bottom: 1px solid var(--border); height: 180px; padding-top: 18px;
}
.col { display: flex; flex-direction: column; align-items: center; height: 100%; min-width: 0; cursor: default; position: relative; }
.col:hover .col__bar, .col:focus-visible .col__bar { filter: brightness(1.15); }
.col:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-radius: 3px; }
.col__plot { flex: 1; width: 100%; display: flex; align-items: flex-end; justify-content: center; }
.col__bar { width: min(100%, 20px); background: var(--accent); border-radius: 4px 4px 0 0; }
.col__value { position: absolute; top: -18px; font-size: 0.75rem; font-weight: 600; white-space: nowrap; }
.col__label { position: absolute; bottom: -20px; font-size: 0.72rem; color: var(--text-muted); }
.chart__table { margin-top: 30px; font-size: 0.85rem; }
.chart__table summary { cursor: pointer; color: var(--text-muted); }
.chart__table table { margin-top: 8px; }

.stat-row { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-top: 8px; }
.stat { border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; break-inside: avoid; }
.stat__value { font-size: 1.25rem; font-weight: 650; }
.meter { height: 6px; background: var(--surface-muted); border-radius: 3px; margin: 6px 0; }
.meter > span { display: block; height: 100%; background: var(--accent); border-radius: 3px; }

.tooltip {
  position: fixed; z-index: 10; pointer-events: none; max-width: 320px;
  background: var(--text); color: var(--bg); padding: 8px 10px; border-radius: 6px;
  font-size: 0.8rem; line-height: 1.4; box-shadow: 0 4px 14px rgb(0 0 0 / 0.2);
}
.tooltip strong { display: block; margin-bottom: 2px; overflow-wrap: anywhere; }

/* ---------- Print: the usage report only, in light colours ---------- */

@media print {
  :root {
    --bg: #fff; --surface: #fff; --surface-muted: #f0f2f5; --border: #d5d9e0;
    --text: #1c2330; --text-muted: #555f6e; --accent: #1f5fbf;
    --good: #1d7a46; --good-bg: #e5f4ea; --bad: #b3261e; --bad-bg: #fbe9e7; --warn: #8a5a00; --warn-bg: #fdf3dc;
  }
  body { font-size: 11pt; }
  .app-header, .panel, #tiles, #warnings, .tabs, .no-print, .chart__table, .tooltip { display: none !important; }
  .results { margin: 0; }
  .page { padding: 0; max-width: none; }
  .tab-panel { display: none !important; }
  #panel-report { display: block !important; border: none; padding: 0; }
  .report__section { break-inside: auto; }
  .report__section h4 { break-after: avoid; }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}

/* ---------- Account pages ---------- */

.app-header__user { margin-left: auto; display: flex; align-items: center; gap: 10px; min-width: 0; }
.app-header__user #user-email { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (max-width: 600px) { .app-header__title { display: none; } }
.page--narrow { max-width: 480px; }
.form { display: grid; gap: 14px; }
input[type="email"], input[type="password"], input[type="text"] {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px; width: 100%;
}
input:focus-visible, select:focus-visible, .button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.link-button { background: none; border: none; padding: 0; color: var(--accent); cursor: pointer; font: inherit; font-size: 0.9rem; }
.steps { padding-left: 20px; display: grid; gap: 16px; }
.qr { display: block; background: #fff; padding: 8px; border-radius: 6px; border: 1px solid var(--border); }
.key { font-family: ui-monospace, Consolas, monospace; letter-spacing: 0.05em; overflow-wrap: anywhere; }
.recovery-codes {
  list-style: none; padding: 12px; margin: 12px 0 18px; border: 1px solid var(--border); border-radius: 6px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; font-family: ui-monospace, Consolas, monospace;
}