/* ============================================================
   Calculadora S&A — Layout e componentes
   Consome os tokens de assets/brand.css
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--brand-ink);
  background: var(--brand-fog);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { font-weight: 600; line-height: 1.2; margin: 0; }
p { margin: 0; }
img { max-width: 100%; display: block; }
a { color: inherit; }

.wrap {
  width: 100%;
  max-width: 960px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

/* ---------------- HEADER ---------------- */
.site-header {
  background: var(--brand-ink);
  color: var(--white);
  border-bottom: 3px solid var(--brand-green);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
}
.brand__badge {
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .25);
  flex: none;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name { font-weight: 600; font-size: 1.05rem; letter-spacing: -0.01em; }
.brand__name em { font-style: normal; font-weight: 400; opacity: .82; }
.brand__tag {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--brand-green);
  font-weight: 600;
  margin-top: 2px;
}
.header-meta {
  font-size: .78rem;
  color: rgba(255, 255, 255, .66);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ---------------- ABAS ---------------- */
.tabs {
  background: var(--white);
  border-bottom: 1px solid var(--brand-border);
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: var(--shadow-sm);
}
.tabs__inner {
  display: flex;
  gap: var(--space-1);
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs__inner::-webkit-scrollbar { display: none; }
.tab {
  appearance: none;
  border: 0;
  background: transparent;
  font-family: inherit;
  font-size: .9rem;
  font-weight: 600;
  color: var(--ink-soft);
  padding: var(--space-4) var(--space-3) calc(var(--space-4) - 3px);
  border-bottom: 3px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color .15s ease, border-color .15s ease, background .15s ease;
}
.tab:hover { color: var(--brand-ink); background: var(--brand-green-soft); }
.tab[aria-selected="true"] {
  color: var(--brand-ink);
  border-bottom-color: var(--brand-green);
}
.tab:focus-visible {
  outline: 3px solid var(--brand-ring);
  outline-offset: -3px;
  border-radius: 4px 4px 0 0;
}

/* ---------------- MAIN ---------------- */
.main { flex: 1; padding-block: var(--space-6) var(--space-7); }

.calc__head { margin-bottom: var(--space-5); }
.calc__title { font-size: clamp(1.35rem, 4vw, 1.7rem); letter-spacing: -0.02em; }
.calc__sub { color: var(--ink-soft); margin-top: var(--space-2); font-size: .95rem; }
.calc__sub strong { color: var(--brand-ink); font-weight: 600; }

/* ---------------- CARD / FORM ---------------- */
.card {
  background: var(--white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-5);
}
.calc__form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4) var(--space-5);
}
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--brand-ink);
  letter-spacing: .005em;
}
.field__hint { font-size: .74rem; color: var(--ink-faint); }

.control { position: relative; display: block; }
.control input {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--brand-ink);
  background: var(--white);
  border: 1.5px solid var(--brand-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-variant-numeric: tabular-nums;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
.control input::placeholder { color: var(--ink-faint); font-weight: 400; }
.control input:hover { border-color: #c9d3de; }
.control input:focus {
  outline: none;
  border-color: var(--brand-green);
  box-shadow: 0 0 0 4px var(--brand-ring);
}
/* prefixo R$ / sufixo % via CSS (sem HTML extra) */
.control--prefix::before,
.control--suffix::after {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: .9rem;
  font-weight: 600;
  color: var(--ink-faint);
  pointer-events: none;
}
.control--prefix::before { content: attr(data-prefix); left: 14px; }
.control--prefix input { padding-left: 40px; }
.control--suffix::after { content: attr(data-suffix); right: 14px; }
.control--suffix input { padding-right: 34px; }

/* campo destacado quando é o que será/foi calculado */
.field.is-target label { color: var(--brand-green-strong); }
.field.is-target .control input {
  border-color: var(--brand-green);
  background: var(--brand-mint);
}

.form-error {
  grid-column: 1 / -1;
  margin: 0;
  color: #a3341f;
  background: #fdecec;
  border: 1px solid #f4c9c0;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: .85rem;
  font-weight: 500;
}

.calc__actions {
  grid-column: 1 / -1;
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-1);
}

/* ---------------- BOTÕES ---------------- */
.btn {
  appearance: none;
  font-family: inherit;
  font-size: .92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 12px 22px;
  cursor: pointer;
  border: 1.5px solid transparent;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .15s ease, color .15s ease, border-color .15s ease, transform .05s ease;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 3px solid var(--brand-ring); outline-offset: 2px; }
.btn--primary { background: var(--brand-green); color: var(--on-green); }
.btn--primary:hover { background: var(--brand-green-strong); }
.btn--ghost { background: transparent; color: var(--ink-soft); border-color: var(--brand-border); }
.btn--ghost:hover { background: var(--brand-fog); color: var(--brand-ink); }
.btn--outline { background: transparent; color: var(--white); border-color: rgba(255, 255, 255, .35); }
.btn--outline:hover { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .6); }

/* ---------------- RESULTADO ---------------- */
.result {
  margin-top: var(--space-4);
  background: var(--brand-mint);
  border: 1px solid #cdeede;
  border-left: 5px solid var(--brand-green);
  border-radius: var(--radius);
  padding: var(--space-5);
  animation: rise .35s ease both;
}
.result__label {
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--brand-green-strong);
}
.result__value {
  font-size: clamp(1.9rem, 7vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--brand-ink);
  font-variant-numeric: tabular-nums;
  margin-top: var(--space-1);
  line-height: 1.1;
}
.result__sentence {
  margin-top: var(--space-3);
  color: var(--ink-90);
  font-size: .95rem;
}
.result__sentence b { font-weight: 600; }
.result__meta {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px dashed #bfe3cf;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
}
.result__meta div { display: flex; flex-direction: column; }
.result__meta dt { font-size: .72rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .06em; }
.result__meta dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; }

/* ---------------- EXEMPLOS ---------------- */
.examples { margin-top: var(--space-7); }
.examples__title {
  font-size: 1.05rem;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--brand-border);
}
.examples__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: var(--space-4);
}
.example {
  background: var(--white);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.example:hover { border-color: #c9d3de; box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.example h3 { font-size: .9rem; color: var(--brand-ink); }
.example p { font-size: .82rem; color: var(--ink-soft); flex: 1; }
.link-btn {
  align-self: flex-start;
  appearance: none;
  border: 0;
  background: none;
  padding: 4px 0 0;
  margin: 0;
  font-family: inherit;
  font-size: .82rem;
  font-weight: 600;
  color: var(--brand-green-strong);
  cursor: pointer;
  border-bottom: 1.5px solid transparent;
}
.link-btn:hover { border-bottom-color: var(--brand-green-strong); }
.link-btn:focus-visible { outline: 3px solid var(--brand-ring); outline-offset: 3px; border-radius: 2px; }

.disclaimer {
  margin-top: var(--space-7);
  font-size: .78rem;
  color: var(--ink-faint);
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
}

/* ---------------- RODAPÉ / CTA ---------------- */
.site-footer {
  background: var(--brand-ink);
  color: var(--white);
  margin-top: var(--space-8);
  padding-block: var(--space-6);
}
.cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  flex-wrap: wrap;
  padding-bottom: var(--space-5);
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}
.cta__text { display: flex; flex-direction: column; gap: 4px; max-width: 460px; }
.cta__text strong { font-size: 1.15rem; font-weight: 600; letter-spacing: -0.01em; }
.cta__text span { color: rgba(255, 255, 255, .72); font-size: .92rem; }
.cta__actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.footer-legal { margin-top: var(--space-5); display: flex; flex-direction: column; gap: var(--space-2); }
.footer-legal p { font-size: .8rem; color: rgba(255, 255, 255, .6); }
.footer-legal strong { color: rgba(255, 255, 255, .82); font-weight: 600; }
.footer-legal__copy { font-size: .76rem !important; }

/* ---------------- ANIMAÇÕES ---------------- */
@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.calc:not([hidden]) .card { animation: rise .3s ease both; }

/* ---------------- RESPONSIVO ---------------- */
@media (max-width: 640px) {
  .calc__form { grid-template-columns: 1fr; }
  .site-header__inner { padding-block: var(--space-3); }
  .brand__tag { display: none; }
  .header-meta { display: none; }
  .cta { flex-direction: column; align-items: flex-start; }
  .cta__actions { width: 100%; }
  .cta__actions .btn { flex: 1; }
  .btn { padding: 12px 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}