/* TaxTool styles: mobile first, system fonts, light and dark. */
:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1d1f21;
  --muted: #5b6168;
  --border: #d5d8dc;
  --accent: #1f5fbf;
  --accent-text: #ffffff;
  --focus: #1f5fbf;
  --stop: #b3261e;
  --stop-bg: #fdecea;
  --warn: #7a5200;
  --warn-bg: #fff4d6;
  --ok: #1b6e35;
  --ok-bg: #e3f4e8;
  --close: #7a5200;
  --close-bg: #fff4d6;
  --fix: #b3261e;
  --fix-bg: #fdecea;
  --radius: 10px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --surface: #1e2125;
    --text: #e8eaed;
    --muted: #a3a9b1;
    --border: #3a3f45;
    --accent: #7fb0ff;
    --accent-text: #0d1b33;
    --focus: #7fb0ff;
    --stop: #ff8a80;
    --stop-bg: #3a1f1d;
    --warn: #ffd27a;
    --warn-bg: #3a2f14;
    --ok: #7fd99a;
    --ok-bg: #173323;
    --close: #ffd27a;
    --close-bg: #3a2f14;
    --fix: #ff8a80;
    --fix-bg: #3a1f1d;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.5;
}

.wrap { max-width: 640px; margin: 0 auto; padding: 0 16px; }

.site-header { border-bottom: 1px solid var(--border); background: var(--surface); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; padding-top: 12px; padding-bottom: 12px; }
.brand { margin: 0; font-weight: 700; font-size: 20px; }
.tagline { margin: 0; color: var(--muted); font-size: 15px; }

main { padding-top: 20px; padding-bottom: 32px; }

h2 { font-size: 24px; line-height: 1.25; margin: 0 0 8px; }
h2:focus { outline: none; }
h3 { font-size: 19px; margin: 0 0 8px; }
.eyebrow { margin: 0 0 4px; color: var(--muted); font-size: 14px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; overflow-wrap: anywhere; }
.intro { margin: 0 0 20px; color: var(--muted); }

.field, fieldset.field { margin: 0 0 20px; padding: 0; border: 0; min-width: 0; }
/* :not(.choice) so this never overrides the flex layout (and gap) of a radio or checkbox label. */
.field > label:not(.choice), fieldset.field > legend { display: block; font-weight: 600; margin-bottom: 4px; padding: 0; }
.hint, .example { margin: 2px 0 6px; color: var(--muted); font-size: 15px; }
.example::before { content: "Example: "; font-weight: 600; }

input[type="text"], input[type="date"], select {
  width: 100%;
  max-width: 320px;
  min-height: 44px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}
input.wide { max-width: 100%; }
input[aria-invalid="true"] { border-color: var(--stop); }

.choice { display: flex; align-items: flex-start; gap: 10px; padding: 8px 0; cursor: pointer; }
.choice input { width: 22px; height: 22px; margin: 2px 0 0; flex: none; accent-color: var(--accent); }
.choice span small { display: block; color: var(--muted); font-size: 15px; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

details.help { margin: 4px 0 6px; font-size: 15px; }
details.help summary { color: var(--accent); cursor: pointer; width: fit-content; }
details.help p { margin: 6px 0 0; padding: 8px 10px; border-left: 3px solid var(--border); }

.msg { margin: 6px 0 0; padding: 6px 10px; border-radius: 6px; font-size: 15px; }
.msg.stop { color: var(--stop); background: var(--stop-bg); }
.msg.warn { color: var(--warn); background: var(--warn-bg); }
.msg.note { color: var(--muted); background: transparent; padding-left: 0; }
.live { margin: 6px 0 0; font-size: 15px; color: var(--muted); }
.live.ok { color: var(--ok); }
.live.bad { color: var(--warn); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; margin: 0 0 16px; }
.card h3 { overflow-wrap: anywhere; }
.card ul { margin: 0; padding-left: 20px; }
.card .actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.card.inset { background: transparent; }

button { font: inherit; cursor: pointer; }
.btn { min-height: 44px; padding: 8px 18px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn.small { min-height: 36px; padding: 4px 12px; font-size: 15px; }
.btn.danger { color: var(--stop); }
.link { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; font-size: 15px; }

.nav { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.nav .primary { margin-left: auto; }

.banner { padding: 10px 14px; border-radius: var(--radius); background: var(--warn-bg); color: var(--warn); margin: 0 0 16px; font-weight: 600; }

/* Results */
.badge { display: inline-block; padding: 4px 12px; border-radius: 999px; font-weight: 700; font-size: 15px; margin-bottom: 8px; }
.badge.onTrack { color: var(--ok); background: var(--ok-bg); }
.badge.close { color: var(--close); background: var(--close-bg); }
.badge.needsFix { color: var(--fix); background: var(--fix-bg); }
.answer { font-size: 21px; line-height: 1.4; margin: 0 0 20px; }
.answer + .saver { margin: -8px 0 20px; }
.fix.main { border: 2px solid var(--accent); }
.fix .headline { font-weight: 700; font-size: 18px; margin: 0 0 8px; overflow-wrap: anywhere; }
.fix .tag { display: inline-block; font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); margin-bottom: 4px; }
.verified { margin: 8px 0 0; padding: 8px 10px; border-radius: 6px; background: var(--ok-bg); color: var(--ok); font-weight: 600; }
.verified p { margin: 0; }
.fix .starts { margin: 0 0 4px; padding-left: 20px; font-weight: 600; overflow-wrap: anywhere; }
.fix .starts + .hint { margin: 0 0 8px; }
.fix .undo { margin: 10px 0 0; font-weight: 600; }
details.why { margin: 4px 0 8px; }
details.why summary { color: var(--accent); cursor: pointer; width: fit-content; }
details.why p { margin: 6px 0 0; }
.alt { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.scenarios { display: grid; grid-template-columns: 1fr; gap: 10px; margin: 0 0 16px; }
@media (min-width: 560px) { .scenarios { grid-template-columns: repeat(3, 1fr); } }
.scenario { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; }
.scenario .name { font-weight: 700; margin: 0; }
.scenario .amount { margin: 4px 0; }
.breakdown { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 15px; }
.breakdown td { padding: 6px 0; border-bottom: 1px solid var(--border); vertical-align: top; }
.breakdown td.amt { text-align: right; white-space: nowrap; padding-left: 12px; }
.breakdown tr.total td { font-weight: 700; }
details.how summary { font-weight: 700; cursor: pointer; }
.fine { color: var(--muted); font-size: 15px; }

.site-footer { border-top: 1px solid var(--border); padding: 16px 0 32px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; font-size: 15px; color: var(--muted); }
.site-footer p { margin: 0; }
.confirm { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

@media print {
  body { background: #fff; color: #000; font-size: 12pt; }
  .site-footer, .nav, .no-print, details.help { display: none !important; }
  .card, .scenario { border-color: #999; break-inside: avoid; }
  .badge, .verified, .msg { background: none !important; color: #000 !important; border: 1px solid #999; }
}