:root {
  --roxo: #7c3aed;
  --roxo-escuro: #5b21b6;
  --roxo-claro: #f1eafe;
  --grafite: #23262d;
  --grafite-2: #3a3f48;
  --texto: #1d1f24;
  --texto-suave: #555b66;
  --fundo: #f6f5f9;
  --card: #ffffff;
  --borda: #dcd9e4;
  --ok: #157347;
  --ok-fundo: #e7f5ee;
  --aviso: #8a5300;
  --aviso-fundo: #fff4de;
  --perigo: #b42318;
  --perigo-fundo: #fdecea;
  --raio: 12px;
  font-size: 16px;
}

* { box-sizing: border-box; }

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

h1, h2, h3, h4 { line-height: 1.25; color: var(--grafite); }
h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin: 0 0 .5rem; }
h2 { font-size: 1.2rem; margin: 0 0 .75rem; display: flex; align-items: center; gap: .5rem; }
h3 { font-size: 1.05rem; margin: 1.25rem 0 .5rem; }
h4 { font-size: .95rem; margin: 1rem 0 .4rem; color: var(--grafite-2); }

/* ---------- topo e marca ---------- */
.topbar { background: var(--grafite); color: #fff; }
.topbar__inner {
  max-width: 1280px; margin: 0 auto; padding: .9rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}
.brand { font-weight: 800; font-size: 1.5rem; letter-spacing: .04em; color: #fff; }
.brand__lab {
  font-size: .62em; font-weight: 700; color: #c4a5ff; margin-left: .2em;
  vertical-align: .35em; letter-spacing: .08em;
}
.topbar__title { margin: 0; font-weight: 600; }
.topnav a { color: #fff; font-weight: 600; }
.tag {
  display: inline-block; font-size: .72rem; text-transform: uppercase; letter-spacing: .06em;
  background: var(--roxo); color: #fff; padding: .1rem .5rem; border-radius: 999px; margin-left: .4rem; vertical-align: middle;
}

/* ---------- layout ---------- */
.layout {
  max-width: 1280px; margin: 0 auto; padding: 1.5rem 1.25rem 2rem;
  display: grid; gap: 1.25rem;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas: "recovery" "intro" "inputs" "results" "sheet" "concepts";
}
.recovery { grid-area: recovery; }
.sheet-card { grid-area: sheet; }
.intro { grid-area: intro; }
.inputs { grid-area: inputs; display: grid; gap: 1.25rem; }
.results { grid-area: results; }
.concepts { grid-area: concepts; }

@media (min-width: 1000px) {
  .layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    grid-template-areas: "recovery recovery" "intro intro" "inputs results" "sheet sheet" "concepts concepts";
  }
  .results__sticky { position: sticky; top: 1rem; max-height: calc(100vh - 2rem); overflow-y: auto; }
}

.card, .results__sticky {
  background: var(--card); border: 1px solid var(--borda); border-radius: var(--raio);
  padding: 1.25rem; box-shadow: 0 1px 2px rgba(35, 38, 45, .05);
}
.results__sticky { border-top: 4px solid var(--roxo); }

.step {
  display: inline-grid; place-items: center; width: 1.7rem; height: 1.7rem; border-radius: 50%;
  background: var(--roxo); color: #fff; font-size: .9rem; flex: none;
}

.hint, .field__hint, .muted, .empty { color: var(--texto-suave); font-size: .9rem; }
.hint { margin: 0 0 .75rem; }
.empty { margin: .25rem 0; }

/* ---------- formulário ---------- */
.field { display: flex; flex-direction: column; gap: .25rem; min-width: 0; margin-bottom: .6rem; }
.field label { font-size: .85rem; font-weight: 600; color: var(--grafite-2); }
.field__hint { margin: 0; }

.input-wrap {
  display: flex; align-items: stretch; border: 1px solid var(--borda); border-radius: 8px; background: #fff; overflow: hidden;
}
.input-wrap:focus-within { border-color: var(--roxo); box-shadow: 0 0 0 3px rgba(124, 58, 237, .2); }
.input-wrap input { flex: 1; min-width: 0; border: 0; padding: .55rem .65rem; font: inherit; color: inherit; background: transparent; }
.input-wrap input:focus { outline: none; }
.input-wrap:has(input[aria-invalid="true"]) { border-color: var(--perigo); background: var(--perigo-fundo); }
.affix { display: flex; align-items: center; padding: 0 .6rem; background: var(--fundo); color: var(--texto-suave); font-size: .9rem; }

select {
  font: inherit; padding: .55rem .5rem; border: 1px solid var(--borda); border-radius: 8px; background: #fff; color: inherit;
}
select:focus { outline: 3px solid rgba(124, 58, 237, .3); border-color: var(--roxo); }
select[aria-invalid="true"] { border-color: var(--perigo); background: var(--perigo-fundo); }

.grid-2, .grid-3 { display: grid; gap: 0 1rem; grid-template-columns: 1fr; }
@media (min-width: 600px) {
  .grid-2 { grid-template-columns: 2fr 1fr; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.list { display: grid; gap: .5rem; margin-bottom: .5rem; }
.row {
  border: 1px solid var(--borda); border-radius: 10px; padding: .6rem .6rem .1rem; margin: 0;
  display: grid; gap: 0 .6rem; grid-template-columns: 1fr 1fr; align-items: end; position: relative;
}
.row > .field:first-of-type { grid-column: 1 / -1; padding-right: 2.2rem; }
.row .btn--icon { position: absolute; top: .45rem; right: .45rem; }
@media (min-width: 760px) {
  .row { grid-template-columns: 2fr 1fr .8fr 1fr .8fr 1.2fr auto; border: 0; padding: 0; }
  .row--2 { grid-template-columns: 2fr 1fr auto; }
  .row--3 { grid-template-columns: 2fr 1fr 1fr auto; }
  .row > .field:first-of-type { grid-column: auto; padding-right: 0; }
  .row .btn--icon { position: static; margin-bottom: .6rem; }
}

.channels { display: grid; gap: 1rem; }
@media (min-width: 1200px) { .channels { grid-template-columns: 1fr 1fr; } }
.channel { border: 1px solid var(--borda); border-radius: 10px; padding: 1rem; background: #fcfbfe; min-width: 0; }
.channel h3 { margin-top: 0; color: var(--roxo-escuro); }
.channel .row { grid-template-columns: 1fr 1fr; }
.channel .row--2 .field:first-of-type, .channel .row--3 .field:first-of-type { grid-column: 1 / -1; padding-right: 2.2rem; }
.channel .row .btn--icon { position: absolute; top: .45rem; right: .45rem; }
.channel .row { border: 1px solid var(--borda); padding: .6rem .6rem .1rem; }

/* ---------- botões ---------- */
.actions { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1rem 0; }
.btn {
  font: inherit; font-weight: 600; cursor: pointer; border-radius: 8px; padding: .55rem 1rem;
  border: 1px solid var(--grafite-2); background: #fff; color: var(--grafite);
}
.btn:hover { background: var(--fundo); }
.btn:focus-visible { outline: 3px solid rgba(124, 58, 237, .45); outline-offset: 2px; }
.btn--primary { background: var(--roxo); border-color: var(--roxo); color: #fff; }
.btn--primary:hover { background: var(--roxo-escuro); }
.btn--ghost { border: 1px dashed var(--roxo); color: var(--roxo-escuro); background: transparent; padding: .4rem .8rem; font-size: .9rem; }
.btn--ghost:hover { background: var(--roxo-claro); }
.btn--icon { padding: .3rem .55rem; border-color: var(--borda); color: var(--texto-suave); line-height: 1; }
.btn--icon:hover { color: var(--perigo); border-color: var(--perigo); }

.banner {
  border-left: 4px solid var(--roxo); background: var(--roxo-claro); color: var(--grafite);
  padding: .75rem 1rem; border-radius: 8px; font-size: .95rem;
}

/* ---------- resultados ---------- */
.product { font-weight: 700; color: var(--roxo-escuro); margin: 0 0 .5rem; }
.kpi { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; padding: .5rem 0; }
.kpi__label { color: var(--texto-suave); font-weight: 600; }
.kpi__value { font-size: 1.6rem; font-weight: 800; color: var(--grafite); }

.table-scroll { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: .93rem; font-variant-numeric: tabular-nums; }
.table th, .table td { padding: .45rem .5rem; border-bottom: 1px solid var(--borda); text-align: right; }
.table th[scope="row"], .table td:first-child { text-align: left; font-weight: 500; }
.table thead th { color: var(--roxo-escuro); font-weight: 700; }
.table--compact td { padding: .3rem .4rem; }
.table .total th, .table .total td { font-weight: 800; border-top: 2px solid var(--grafite-2); }
.table .highlight th, .table .highlight td { background: var(--roxo-claro); }
.table small { color: var(--texto-suave); }

.pos { color: var(--ok); }
.warn { color: var(--aviso); }
.neg { color: var(--perigo); }

.note { font-size: .9rem; background: var(--fundo); border-radius: 8px; padding: .6rem .8rem; }

.alerts { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; gap: .5rem; }
.alert { padding: .6rem .8rem; border-radius: 8px; font-size: .92rem; border-left: 4px solid; margin: 0 0 1rem; }
.alerts .alert { margin: 0; }
.alert--erro, .alert--perigo { background: var(--perigo-fundo); border-color: var(--perigo); color: #7a1610; }
.alert--atencao { background: var(--aviso-fundo); border-color: #d18a00; color: #5c3800; }
.alert--ok { background: var(--ok-fundo); border-color: var(--ok); color: #0d4f30; }

.formulas { margin-top: 1rem; border: 1px solid var(--borda); border-radius: 10px; padding: .5rem .9rem; }
.formulas summary { cursor: pointer; font-weight: 700; color: var(--roxo-escuro); padding: .3rem 0; }
.formula { font-size: .88rem; border-top: 1px solid var(--borda); padding-top: .4rem; }
.formula p { margin: .35rem 0; overflow-wrap: anywhere; }
.formula code { font-size: .82rem; background: var(--fundo); padding: .1rem .3rem; border-radius: 4px; }

.concepts dt { font-weight: 700; color: var(--roxo-escuro); margin-top: .9rem; }
.concepts dd { margin: .25rem 0 0; }

.footer { text-align: center; color: var(--texto-suave); font-size: .85rem; padding: 1rem 1.25rem 2rem; max-width: 900px; margin: 0 auto; }

/* ---------- salvamento e recuperação ---------- */
.save-status { font-size: .88rem; margin: 0 0 .75rem; min-height: 1.3em; }
.save-status--ok { color: var(--texto-suave); }
.save-status--erro { color: var(--perigo); font-weight: 700; }
.banner--warn { border-left-color: #d18a00; background: var(--aviso-fundo); }
.recovery { background: var(--perigo-fundo); border: 2px solid var(--perigo); border-radius: var(--raio); padding: 1rem 1.25rem; }
.recovery h2 { color: var(--perigo); }
.recovery textarea { width: 100%; font: .82rem/1.4 ui-monospace, monospace; margin-top: .3rem; border: 1px solid var(--borda); border-radius: 8px; padding: .5rem; }
.btn--danger { border-color: var(--perigo); color: var(--perigo); }
.btn--danger:hover { background: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- ficha técnica ---------- */
.sheet { border: 1px solid var(--borda); border-radius: 10px; padding: 1.25rem; background: #fff; }
.sheet__head { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; border-bottom: 3px solid var(--roxo); padding-bottom: .6rem; }
.sheet__kicker { margin: 0; text-transform: uppercase; letter-spacing: .08em; font-size: .75rem; color: var(--roxo-escuro); font-weight: 700; }
.sheet__title { margin: .1rem 0; font-size: 1.35rem; }
.sheet__business { margin: 0; color: var(--grafite-2); font-weight: 600; }
.sheet__meta { display: flex; flex-direction: column; text-align: right; font-size: .9rem; color: var(--texto-suave); }
.sheet__warn { color: var(--aviso); font-weight: 700; margin: .6rem 0 0; }
.sheet__note { font-size: .9rem; background: var(--fundo); padding: .6rem .8rem; border-radius: 8px; margin-top: 1rem; }
.sheet__foot { font-size: .78rem; color: var(--texto-suave); margin-top: .8rem; border-top: 1px solid var(--borda); padding-top: .5rem; }

.contact a { color: var(--roxo-escuro); font-weight: 600; }

@media print {
  body { background: #fff; }
  .topbar, .intro, .inputs, .results, .concepts, .footer, .recovery, .no-print, .sheet-card > h2 { display: none !important; }
  .layout { display: block; padding: 0; max-width: none; }
  .sheet-card { border: 0; box-shadow: none; padding: 0; }
  .sheet { border: 0; padding: 0; }
  .table-scroll { overflow: visible; }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0;
}

/* Acabamento compartilhado: teclado, estado de espera e movimento reduzido. */
.skip-link{position:fixed;top:8px;left:12px;z-index:1000;transform:translateY(-180%);background:#fff;color:#32105d;padding:12px 18px;border-radius:8px;font-weight:700}.skip-link:focus{transform:none}
:focus-visible{outline:3px solid #a865ed;outline-offset:3px}button:disabled{cursor:wait;opacity:.65}[aria-busy="true"]{cursor:progress}.msg:empty{display:none}.msg:focus{outline:2px solid #a865ed;outline-offset:4px}input,select,textarea{scroll-margin-top:24px}main{min-width:0}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media print{.skip-link{display:none}}