/* ADA8 · Ferramentas gratuitas · estilos compartilhados (hub + ferramentas) */
:root {
  --ink-900: #161C18; --ink-800: #1F2A23; --ink-700: #2D3B32;
  --paper: #F7F4EE; --paper-100: #F5F0E5; --paper-200: #EAE2D0;
  --moss-700: #4F624F; --moss-600: #738678; --moss-500: #94A398;
  --brass: #D4A84B; --brass-700: #8A6A22; --cream: #F5F0E5;
  --gray-300: #E4E0D8; --gray-500: #6B6560; --gray-700: #4A4540; --gray-1000: #161410;
  --danger: #A23B2A; --ok: #3F6B4A;
  --radius: 10px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Space Grotesk', system-ui, sans-serif; background: var(--ink-900); color: var(--cream);
  line-height: 1.6; font-weight: 400; -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Nav */
.ada8-nav {
  position: sticky; top: 0; z-index: 100; background: rgba(22,28,24,.9);
  border-bottom: 1px solid rgba(115,134,120,.12); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
}
.nav-inner { max-width: 1240px; margin: 0 auto; padding: 0 2rem; display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: .55rem; color: var(--cream); opacity: .9; }
.logo:hover { opacity: 1; }
.logo-mark { font-weight: 400; letter-spacing: .18em; font-size: 1.05rem; }
.logo-tag { color: var(--brass); font-size: .75rem; letter-spacing: .15em; text-transform: uppercase; }
.nav-right { display: flex; align-items: center; gap: 1.5rem; }
.nav-back { font-size: .9rem; color: rgba(245,240,229,.6); transition: color .15s; }
.nav-back:hover { color: var(--cream); }
.btn-sm {
  display: inline-flex; align-items: center; gap: .45rem; background: var(--moss-600); color: var(--ink-900);
  padding: .6rem 1.1rem; border-radius: 5px; font-size: .9rem; font-weight: 500; transition: background .2s;
}
.btn-sm:hover { background: var(--moss-500); }

/* Hero */
.hero { position: relative; padding: 5.5rem 2rem 4.5rem; text-align: center; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 110% 80% at 50% 0%, var(--ink-800) 0%, var(--ink-900) 70%); }
.hero::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(245,240,229,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(245,240,229,.025) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 20%, transparent 75%);
}
.hero-inner { position: relative; z-index: 1; max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 1.25rem; }
.eyebrow { color: var(--brass); font-size: .75rem; letter-spacing: .26em; text-transform: uppercase; font-weight: 500; }
h1 { font-weight: 500; font-size: clamp(2rem, 4.6vw, 3.3rem); line-height: 1.08; letter-spacing: -.03em; }
h1 em { color: var(--moss-500); font-style: normal; }
h2 { font-weight: 500; font-size: clamp(1.5rem, 3vw, 2.1rem); line-height: 1.15; letter-spacing: -.02em; }
.hero-sub { font-size: 1.12rem; color: rgba(245,240,229,.7); max-width: 60ch; line-height: 1.7; }
.hero-note { font-size: .9rem; color: rgba(245,240,229,.5); max-width: 62ch; }
.crumbs { font-size: .9rem; color: rgba(245,240,229,.5); }
.crumbs a:hover { color: var(--cream); }

/* Corpo claro */
.page-body { background: var(--paper); color: var(--gray-1000); padding: 4rem 0 5rem; }
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 2rem; }

/* Hub: cards de ferramentas */
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.tool-card {
  background: #fff; border: 1px solid var(--gray-300); border-radius: var(--radius); padding: 2rem 1.75rem;
  display: flex; flex-direction: column; gap: 1rem; position: relative; transition: border-color .2s, transform .2s, box-shadow .2s;
}
.tool-card.is-live:hover { border-color: var(--moss-600); transform: translateY(-2px); box-shadow: 0 14px 30px -18px rgba(22,28,24,.35); }
.tool-card .tool-ico { width: 44px; height: 44px; }
.tool-card h3 { font-weight: 500; font-size: 1.3rem; letter-spacing: -.01em; line-height: 1.2; }
.tool-card p { color: var(--gray-700); font-size: 1rem; line-height: 1.6; }
.tool-card ul { list-style: none; display: grid; gap: .4rem; font-size: .9rem; color: var(--gray-700); margin-top: .25rem; }
.tool-card li { display: flex; gap: .55rem; align-items: baseline; }
.tool-card li::before { content: ''; width: 6px; height: 6px; flex: none; transform: translateY(-1px); background: var(--brass); clip-path: polygon(30% 0,70% 0,100% 30%,100% 70%,70% 100%,30% 100%,0 70%,0 30%); }
.tool-card .card-foot { margin-top: auto; padding-top: .75rem; }
.badge {
  display: inline-block; font-size: .75rem; letter-spacing: .16em; text-transform: uppercase; font-weight: 500;
  padding: .3rem .6rem; border-radius: 999px; border: 1px solid currentColor; align-self: flex-start;
}
.badge-live { color: var(--ok); }
.badge-soon { color: var(--gray-500); }
.tool-card.is-soon { background: #FBFAF7; }
.tool-card.is-soon h3, .tool-card.is-soon .tool-ico { opacity: .75; }

/* Botões */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem; cursor: pointer;
  padding: .8rem 1.3rem; border-radius: 6px; font-weight: 500; font-size: 1rem; border: 1px solid transparent;
  transition: background .2s, border-color .2s, color .2s, transform .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--moss-700); color: #fff; }
.btn-primary:hover { background: var(--ink-700); }
.btn-outline { background: transparent; color: var(--gray-1000); border-color: var(--gray-300); }
.btn-outline:hover { border-color: var(--moss-600); color: var(--moss-700); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }
.btn-light { background: var(--moss-600); color: var(--ink-900); }
.btn-light:hover { background: var(--moss-500); }
.btn-ghost-light { color: rgba(245,240,229,.75); border-color: rgba(245,240,229,.2); }
.btn-ghost-light:hover { color: var(--cream); border-color: rgba(245,240,229,.4); }

/* Seção comercial / CTA */
.cta-band { background: var(--ink-800); padding: 4.5rem 2rem; text-align: center; }
.cta-band h2 { color: var(--cream); max-width: 26ch; margin: .75rem auto 1rem; }
.cta-band p { color: rgba(245,240,229,.65); max-width: 54ch; margin: 0 auto 2rem; font-size: 1.05rem; line-height: 1.65; }
.cta-actions { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }
.site-footer {
  background: var(--ink-900); padding: 2rem; text-align: center; font-size: .8rem;
  color: rgba(245,240,229,.4); border-top: 1px solid rgba(115,134,120,.12);
}
.site-footer a { color: var(--brass); }

/* ── Calculadora ─────────────────────────────────────────── */
.calc { display: grid; grid-template-columns: minmax(330px, 420px) minmax(0, 1fr); gap: 2rem; align-items: start; }
.calc > * { min-width: 0; }
.results, .kpis, .charts-2, .split, .tools-grid, .proj-inputs { min-width: 0; }
.results > *, .kpis > *, .charts-2 > *, .split > *, .proj-inputs > * { min-width: 0; }
.results { grid-template-columns: minmax(0, 1fr); }
.panel { background: #fff; border: 1px solid var(--gray-300); border-radius: var(--radius); }
.panel-params { position: sticky; top: 80px; max-height: calc(100vh - 96px); overflow: auto; padding: 1.5rem; }
.panel h2 { font-size: 1.15rem; }
.panel-title { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: 1rem; }
.hint { font-size: .9rem; color: var(--gray-500); line-height: 1.5; }
fieldset { border: 0; border-top: 1px solid var(--gray-300); padding: 1.1rem 0 .4rem; margin-top: .4rem; min-width: 0; }
legend { font-size: .75rem; letter-spacing: .2em; text-transform: uppercase; color: var(--moss-700); font-weight: 500; padding-right: .6rem; }
.presets { display: grid; grid-template-columns: repeat(2, 1fr); gap: .45rem; margin: .7rem 0 .4rem; }
.preset {
  text-align: left; cursor: pointer; background: var(--paper); border: 1px solid var(--gray-300); border-radius: 6px;
  padding: .55rem .7rem; font-size: .9rem; line-height: 1.3; color: var(--gray-700); transition: border-color .15s, background .15s;
}
.preset:hover { border-color: var(--moss-600); }
.preset[aria-pressed="true"] { border-color: var(--moss-700); background: #EEF2EC; color: var(--gray-1000); font-weight: 500; }
.field { display: grid; gap: .3rem; margin: .75rem 0; }
.field label { font-size: .9rem; color: var(--gray-1000); font-weight: 400; display: flex; justify-content: space-between; gap: .5rem; }
.field label .unit { color: var(--gray-500); font-size: .8rem; }
.field-row { display: grid; grid-template-columns: 1fr 96px; gap: .6rem; align-items: center; }
.field-row.field-time { grid-template-columns: 1fr auto; gap: .4rem; }
.field select.time-unit {
  padding: .55rem 1.9rem .55rem .65rem; border: 1px solid var(--gray-300); border-radius: 6px; font-size: .9rem; color: var(--gray-1000);
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23737373' stroke-width='1.4'/%3E%3C/svg%3E") no-repeat right .65rem center;
  -webkit-appearance: none; appearance: none; cursor: pointer;
}
.field select.time-unit:focus { border-color: var(--moss-600); outline: none; box-shadow: 0 0 0 3px rgba(115,134,120,.2); }
.field input[type="text"], .field input[type="number"], .field input[inputmode] {
  width: 100%; padding: .55rem .65rem; border: 1px solid var(--gray-300); border-radius: 6px; background: #fff;
  font-size: 1rem; color: var(--gray-1000); font-variant-numeric: tabular-nums;
}
.field input:focus { border-color: var(--moss-600); outline: none; box-shadow: 0 0 0 3px rgba(115,134,120,.2); }
.field.has-error input { border-color: var(--danger); }
.field .err { color: var(--danger); font-size: .8rem; min-height: 0; }
.field .help { font-size: .8rem; color: var(--gray-500); line-height: 1.45; }
input[type="range"] { width: 100%; accent-color: var(--moss-700); height: 22px; }

.results { display: grid; gap: 1.5rem; }
.results-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.results-head h2 { color: var(--gray-1000); }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: .9rem; }
.kpi { background: #fff; border: 1px solid var(--gray-300); border-radius: var(--radius); padding: 1.1rem 1.1rem 1rem; display: grid; gap: .25rem; align-content: start; }
.kpi .k-label { font-size: .8rem; color: var(--gray-500); line-height: 1.35; }
.kpi .k-value { font-size: 1.45rem; font-weight: 500; letter-spacing: -.02em; color: var(--gray-1000); font-variant-numeric: tabular-nums; line-height: 1.2; word-break: break-word; }
.kpi .k-value.small { font-size: 1.05rem; line-height: 1.35; }
.kpi .k-sub { font-size: .8rem; color: var(--gray-500); }
.kpi.accent { border-color: var(--moss-600); background: #F1F4EF; }
.kpi .neg { color: var(--danger); }
.kpi .pos { color: var(--ok); }

.note {
  border-left: 3px solid var(--brass); background: #FBF6EA; padding: 1rem 1.15rem; border-radius: 0 8px 8px 0;
  font-size: .9rem; color: var(--gray-700); line-height: 1.6;
}
.note strong { color: var(--gray-1000); font-weight: 500; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: .9rem; }
.split .box { background: #fff; border: 1px solid var(--gray-300); border-radius: var(--radius); padding: 1rem 1.1rem; }
.split .box h3 { font-size: .9rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 500; color: var(--moss-700); margin-bottom: .35rem; }
.split .box .big { font-size: 1.25rem; font-weight: 500; font-variant-numeric: tabular-nums; }
.split .box p { font-size: .9rem; color: var(--gray-500); margin-top: .3rem; line-height: 1.5; }

.card { background: #fff; border: 1px solid var(--gray-300); border-radius: var(--radius); padding: 1.35rem 1.4rem; }
.card h3 { font-size: 1.05rem; font-weight: 500; margin-bottom: .2rem; }
.card .hint { margin-bottom: .9rem; }
.chart { width: 100%; height: auto; display: block; }
.chart text { font-family: 'Space Grotesk', system-ui, sans-serif; }
.legend { display: flex; gap: 1.1rem; flex-wrap: wrap; font-size: .8rem; color: var(--gray-700); margin-top: .6rem; }
.legend span { display: inline-flex; align-items: center; gap: .4rem; }
.legend i { width: 14px; height: 3px; border-radius: 2px; display: inline-block; }
.charts-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }

table.scen { width: 100%; border-collapse: collapse; font-size: .9rem; font-variant-numeric: tabular-nums; }
table.scen th, table.scen td { padding: .55rem .5rem; border-bottom: 1px solid var(--gray-300); text-align: right; vertical-align: middle; }
table.scen th:first-child, table.scen td:first-child { text-align: left; }
table.scen thead th { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--gray-500); font-weight: 500; }
table.scen tbody tr.hyp td { color: var(--gray-500); font-size: .9rem; }
table.scen input { width: 74px; padding: .35rem .4rem; border: 1px solid var(--gray-300); border-radius: 5px; text-align: right; font-size: .9rem; background: #fff; }
table.scen .col-base { background: #F6F8F4; }
.table-scroll { overflow-x: auto; }

.formulas { font-size: .9rem; color: var(--gray-700); line-height: 1.7; }
.formulas code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9rem; background: var(--paper); padding: .1rem .35rem; border-radius: 4px; color: var(--gray-1000); }
details.card summary { cursor: pointer; font-weight: 500; font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; }
details.card summary::after { content: '+'; color: var(--moss-700); }
details.card[open] summary::after { content: '−'; }
details.card[open] summary { margin-bottom: .8rem; }
.proj-inputs { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; margin-bottom: .8rem; }
.proj-inputs .field { margin: 0; }
.tag-nominal { display: inline-block; font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--brass-700); background: #FBF3DF; padding: .2rem .5rem; border-radius: 4px; }
.toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%) translateY(20px); opacity: 0;
  background: var(--ink-800); color: var(--cream); padding: .7rem 1.1rem; border-radius: 6px; font-size: .9rem;
  transition: opacity .2s, transform .2s; pointer-events: none; z-index: 200;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── IA na calculadora ─────────────────────────────── */
.ai-chip { display: inline-block; font-size: .75rem; letter-spacing: .14em; font-weight: 500; color: var(--brass-700); background: #FBF3DF; border: 1px solid #EAD9AE; padding: .1rem .4rem; border-radius: 4px; margin-right: .35rem; vertical-align: middle; }
.btn-ai[aria-busy="true"] { cursor: progress; opacity: .75; }
.btn-ai[aria-busy="true"]::before { content: ''; width: 12px; height: 12px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; display: inline-block; margin-right: .5rem; vertical-align: -1px; animation: ai-spin .8s linear infinite; }
@keyframes ai-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .btn-ai[aria-busy="true"]::before { animation: none; } }
.ai-status { font-size: .9rem; color: var(--gray-500); line-height: 1.5; margin-top: .5rem; }
.ai-status:empty { display: none; }
.ai-status.is-error { color: var(--danger); }
.ai-card { border-color: #E3D5B0; }
.ai-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; flex-wrap: wrap; }
.ai-head .hint { margin-bottom: 0; max-width: 62ch; }
.ai-out { margin-top: 1rem; display: grid; gap: 1rem; }
.ai-out.is-stale { opacity: .55; }
.ai-verdict { display: inline-block; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 500; padding: .2rem .55rem; border-radius: 4px; }
.ai-verdict.v-favoravel { color: var(--ok); background: #E9F1EA; }
.ai-verdict.v-marginal { color: var(--brass-700); background: #FBF3DF; }
.ai-verdict.v-desfavoravel { color: var(--danger); background: #F8E9E6; }
.ai-summary { font-size: 1rem; line-height: 1.65; color: var(--gray-1000); }
.ai-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.ai-cols > div, .ai-steps { min-width: 0; }
.ai-out h4 { font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 500; color: var(--moss-700); margin-bottom: .45rem; }
.ai-item { font-size: .9rem; line-height: 1.55; color: var(--gray-700); padding: .55rem 0; border-top: 1px solid var(--gray-300); }
.ai-item strong { display: block; color: var(--gray-1000); font-weight: 500; margin-bottom: .15rem; }
.ai-steps ol { padding-left: 1.2rem; display: grid; gap: .35rem; font-size: .9rem; line-height: 1.55; color: var(--gray-700); }
.ai-source { font-size: .8rem; color: var(--gray-500); }
.ai-badges { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.ai-rec { display: inline-block; font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 500; padding: .2rem .55rem; border-radius: 4px; color: var(--gray-1000); background: var(--gray-100, #F4F1EA); border: 1px solid var(--gray-300); }
.ai-rec.r-aprovar { border-color: #BFD3C2; }
.ai-rec.r-reestruturar, .ai-rec.r-nao_recomendado { border-color: #E5C3BC; }
.ai-thesis { font-size: 1.22rem; line-height: 1.4; font-weight: 500; letter-spacing: -.01em; color: var(--gray-1000); padding-left: .9rem; border-left: 3px solid var(--brass-600, #D4A84B); }
.ai-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .6rem; }
.ai-metric { border: 1px solid var(--gray-300); border-radius: 8px; padding: .65rem .75rem; display: grid; gap: .15rem; background: #fff; min-width: 0; }
.ai-metric span { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--gray-500); }
.ai-metric strong { font-size: 1.05rem; font-weight: 500; color: var(--gray-1000); overflow-wrap: anywhere; }
.ai-metric small { font-size: .8rem; color: var(--gray-500); line-height: 1.35; }
.ai-metric.t-pos strong { color: var(--ok); }
.ai-metric.t-neg strong { color: var(--danger); }
.ai-block { min-width: 0; }
.ai-para { font-size: 1rem; line-height: 1.7; color: var(--gray-700); }
.ai-para + .ai-para { margin-top: .6rem; }
.ai-invite { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; background: #FBF8F0; border: 1px solid #EFE4C8; border-radius: 10px; padding: 1rem 1.1rem; }
.ai-invite > div { flex: 1 1 320px; min-width: 0; }
.ai-invite p { font-size: 1rem; line-height: 1.6; color: var(--gray-1000); }
@media (max-width: 760px) { .ai-cols { grid-template-columns: 1fr; } .ai-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); } .ai-thesis { font-size: 1.12rem; } }

@media (max-width: 1100px) {
  .kpis { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 960px) {
  .calc { grid-template-columns: 1fr; }
  .panel-params { position: static; max-height: none; }
  .tools-grid { grid-template-columns: 1fr; }
  .charts-2 { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .hero { padding: 3.5rem 1.25rem 3rem; }
  .wrap { padding: 0 1rem; }
  .nav-inner { padding: 0 1rem; }
  .nav-back, .logo-tag { display: none; }
  .split, .proj-inputs { grid-template-columns: 1fr; }
  .kpi .k-value { font-size: 1.2rem; }
  .presets { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }
@media print {
  .ada8-nav, .panel-params, .actions, .cta-band, .site-footer { display: none !important; }
  .calc { grid-template-columns: 1fr; }
}