/* ==============================================================
   AGROCARBONO — Calculadora de Pegada de Carbono Agrícola
   Concurso Agrinho 2026 · Subcategoria 3
   ============================================================== */

/* ------- Tokens ------- */
:root {
  /* Paleta agro-sustentável + acentos vibrantes (ref: dobig, cubethumbs) */
  --bg:           #0a1f15;     /* verde profundo (base dark) */
  --bg-elev:     #0f2a1d;      /* elevação de cards */
  --bg-soft:     #122e21;      /* superfícies internas */
  --line:        #1c3b2c;      /* divisórias sutis */

  --ink:         #eaf5ec;      /* texto principal claro */
  --ink-dim:     #9bb5a4;      /* texto secundário */
  --ink-muted:   #6c8779;      /* texto auxiliar */

  --primary:     #d4ff5c;      /* lima vibrante (acento principal) */
  --primary-2:   #a3e635;      /* verde-lima profundo */
  --leaf:        #4ade80;      /* verde folha */
  --earth:       #d4a373;      /* âmbar terroso (acento) */

  --grad-1: linear-gradient(135deg, #d4ff5c 0%, #4ade80 100%);
  --grad-2: linear-gradient(135deg, #4ade80 0%, #2d6a4f 100%);

  --radius-sm: 10px;
  --radius:    18px;
  --radius-lg: 28px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,.25);
  --shadow:    0 18px 60px -12px rgba(0,0,0,.55);

  --container: 1200px;

  --t-fast: 180ms cubic-bezier(.2,.6,.2,1);
  --t-med:  360ms cubic-bezier(.2,.6,.2,1);
}

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

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

/* Quando o JS de smooth scroll está ativo, ele controla o scroll
   por requestAnimationFrame, então o nativo precisa ficar 'auto'. */
html.has-smooth-scroll { scroll-behavior: auto; }

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative; /* âncora pro .ambient absoluto */
}

img, svg { display: block; max-width: 100%; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--t-fast);
}

button { font: inherit; cursor: pointer; }

::selection { background: var(--primary); color: var(--bg); }

/* ------- Layout ------- */
.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

/* ------- Tipografia ------- */
.hero-title,
.section-title,
.logo-text,
.step-num,
.btn,
.eyebrow {
  font-family: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  letter-spacing: -0.02em;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
  padding: 6px 12px;
  border: 1px solid color-mix(in oklab, var(--primary) 35%, transparent);
  border-radius: 999px;
  background: color-mix(in oklab, var(--primary) 8%, transparent);
}

.text-gradient {
  background: var(--grad-1);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}

.section-title {
  font-size: clamp(2rem, 1.2rem + 3vw, 4rem);
  font-weight: 700;
  line-height: 1.05;
  margin: 18px 0 18px;
  max-width: 22ch;
}

.section-lead {
  font-size: clamp(1rem, .95rem + .3vw, 1.18rem);
  color: var(--ink-dim);
  max-width: 60ch;
  margin: 0 0 48px;
}

.muted { color: var(--ink-muted); }

/* ------- Botões ------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  transition: transform var(--t-fast), background var(--t-fast),
              color var(--t-fast), border-color var(--t-fast);
  white-space: nowrap;
}

.btn-sm  { padding: 9px 16px; font-size: 14px; }
.btn-lg  { padding: 16px 26px; font-size: 16px; }

.btn-primary {
  background: var(--primary);
  color: #0a1f15;
}
.btn-primary:hover {
  background: var(--primary-2);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ------- Header ------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid color-mix(in oklab, var(--line) 60%, transparent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.logo-mark {
  width: 22px;
  height: 22px;
  display: block;
  flex-shrink: 0;
}

.logo-text { font-size: 17px; letter-spacing: .04em; }
.logo-text .accent { color: var(--primary); }

.main-nav {
  margin-left: auto;
  display: flex;
  gap: 28px;
  font-size: 14.5px;
  color: var(--ink-dim);
}
.main-nav a:hover { color: var(--ink); }

/* ------- Hero ------- */
.hero {
  position: relative;
  padding: clamp(80px, 10vw, 140px) 0 clamp(60px, 8vw, 110px);
}

/* Camada de atmosfera global — vive no nível do body, atravessa todas
   as seções e elimina cortes entre uma seção e outra.
   z-index: -1 mantém ela atrás do conteúdo, mas acima do background do body. */
.ambient {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: float 14s ease-in-out infinite;
}
/* Topo (hero) — orb mais forte, define a "primeira impressão" */
.orb-1 {
  width: 520px; height: 520px;
  top: -100px;
  right: -100px;
  background: var(--primary);
  opacity: .22;
}
/* Transição hero → como funciona — costura as duas seções */
.orb-2 {
  width: 460px; height: 460px;
  top: 18%;
  left: -160px;
  background: var(--leaf);
  opacity: .16;
  animation-delay: -6s;
}
/* Calculadora — orb à direita, decora o miolo da página */
.orb-3 {
  width: 480px; height: 480px;
  top: 46%;
  right: -120px;
  background: var(--primary);
  opacity: .12;
  animation-delay: -3s;
}
/* Sobre / footer — fechamento suave da atmosfera */
.orb-4 {
  width: 400px; height: 400px;
  top: 76%;
  left: 8%;
  background: var(--leaf);
  opacity: .12;
  animation-delay: -9s;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 56px 56px;
  /* Fade no topo (atrás do header) e perto do rodapé — sem cortes visíveis */
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 120px, #000 calc(100% - 280px), transparent 100%);
          mask-image: linear-gradient(to bottom, transparent 0, #000 120px, #000 calc(100% - 280px), transparent 100%);
}

.hero-inner { position: relative; z-index: 1; }

.hero-title {
  font-size: clamp(2.6rem, 1.4rem + 5.2vw, 6.5rem);
  font-weight: 700;
  line-height: 1;
  margin: 22px 0 22px;
  letter-spacing: -0.035em;
}

/* Efeito typewriter no hero — cursor piscante após a palavra que cicla. */
.typewriter {
  display: inline-block;
  position: relative;
  /* Puxa o " forte" um pouco mais perto da palavra que cicla. */
  margin-right: -0.18em;
}
.typewriter::after {
  content: '|';
  display: inline-block;
  margin-left: 0;
  color: var(--primary);
  font-weight: 400;
  animation: typewriter-blink 0.9s step-end infinite;
}
@keyframes typewriter-blink {
  0%, 50%   { opacity: 1; }
  51%, 100% { opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .typewriter::after { animation: none; opacity: 0; }
}

.hero-lead {
  font-size: clamp(1.05rem, .95rem + .5vw, 1.35rem);
  color: var(--ink-dim);
  max-width: 58ch;
  margin: 0 0 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 64px;
}

.hero-stats {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

.hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hero-stats strong {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.6rem, 1.1rem + 1.5vw, 2.4rem);
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.hero-stats span {
  color: var(--ink-dim);
  font-size: 14.5px;
  max-width: 28ch;
}

/* ------- Como funciona ------- */
.how { padding: clamp(80px, 9vw, 130px) 0; }

.steps {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.step {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
  transition: transform var(--t-med), border-color var(--t-med),
              background var(--t-med), filter var(--t-med);
}
.step::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-1);
  opacity: 0;
  transition: opacity var(--t-med);
  pointer-events: none;
  mix-blend-mode: overlay;
}
/* Hover focado: o card sob o cursor cresce e ganha destaque,
   enquanto os outros desfocam pra direcionar a atenção. */
@media (hover: hover) {
  .steps:hover .step {
    filter: blur(2px) brightness(.7);
    transform: scale(.97);
  }
  .steps:hover .step:hover {
    filter: none;
    transform: translateY(-6px) scale(1.04);
    border-color: color-mix(in oklab, var(--primary) 40%, var(--line));
    z-index: 2;
  }
  .steps:hover .step:hover::after { opacity: .08; }
}
@media (prefers-reduced-motion: reduce) {
  .steps:hover .step,
  .steps:hover .step:hover {
    filter: none;
    transform: none;
  }
}

.step-num {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: .12em;
  margin-bottom: 24px;
}

.step h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.35rem;
  margin: 0 0 10px;
}

.step p {
  margin: 0;
  color: var(--ink-dim);
}

/* ------- Calculadora ------- */
.calc { padding: clamp(80px, 9vw, 130px) 0; }

.calc-form {
  display: grid;
  gap: 24px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 48px);
  box-shadow: var(--shadow);
}

.field-group {
  border: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.field-group legend {
  grid-column: 1 / -1;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--ink-dim);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
  width: 100%;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field label {
  font-size: 14px;
  color: var(--ink);
  font-weight: 500;
}

.field input,
.field select {
  appearance: none;
  -webkit-appearance: none;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: var(--radius-sm);
  padding: 13px 14px;
  font: inherit;
  font-size: 15px;
  transition: border-color var(--t-fast), background var(--t-fast),
              box-shadow var(--t-fast);
}

.field input::placeholder { color: var(--ink-muted); }

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--primary) 22%, transparent);
  background: color-mix(in oklab, var(--bg-soft) 92%, var(--primary) 8%);
}

.field select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%239bb5a4' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

/* ------- Resultado ------- */
.calc-result {
  margin-top: 28px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 40px);
  display: grid;
  gap: 28px;
  /* Compensa o header sticky na hora do scrollIntoView do JS,
     pra não cortar o rating badge atrás do header. */
  scroll-margin-top: 100px;
}
/* Esconde a caixa de resultado até que o JS remova o atributo [hidden].
   Sem essa regra o display:grid acima sobrepõe o default do [hidden]. */
.calc-result[hidden] { display: none; }

.result-headline {
  display: grid;
  gap: 6px;
}

.result-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.4rem, 1.5rem + 3vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--primary);
  line-height: 1;
}

.result-unit {
  color: var(--ink-dim);
  font-size: 14px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.result-rating {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  width: fit-content;
}
.rating-low    { background: color-mix(in oklab, var(--leaf) 18%, transparent);    color: var(--leaf); }
.rating-medium { background: color-mix(in oklab, var(--earth) 22%, transparent);   color: var(--earth); }
.rating-high   { background: color-mix(in oklab, #ff6b6b 22%, transparent);        color: #ff8a8a; }

.result-breakdown {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.breakdown-item {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 16px;
}
.breakdown-item .lbl {
  display: block;
  font-size: 12px;
  color: var(--ink-muted);
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.breakdown-item .val {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--ink);
}
.breakdown-item .pct {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--ink-dim);
}

/* Mini bar chart visual no breakdown — preenche proporcional ao percentual */
.breakdown-bar {
  width: 100%;
  height: 5px;
  background: color-mix(in oklab, var(--line) 70%, transparent);
  border-radius: 999px;
  margin-top: 12px;
  overflow: hidden;
}
.breakdown-bar-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 999px;
  width: 0;
  transition: width 1.2s cubic-bezier(.2, .6, .2, 1);
}

/* Bloco de equivalências educativas — coloca a pegada em contexto real */
.result-equivalences {
  background: color-mix(in oklab, var(--primary) 6%, transparent);
  border-left: 3px solid var(--primary);
  padding: 18px 22px;
  border-radius: var(--radius-sm);
}
.result-equivalences h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  margin: 0 0 12px;
  color: var(--ink-dim);
  font-weight: 500;
}
.result-equivalences ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}
.result-equivalences li {
  color: var(--ink);
  font-size: 0.95rem;
  line-height: 1.5;
}
.result-equivalences strong {
  color: var(--primary);
  font-weight: 600;
}
.result-equivalences .source {
  display: block;
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--ink-dim);
  opacity: 0.7;
}

.tips {
  display: grid;
  gap: 10px;
}
.tips h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  margin: 0 0 8px;
}
.tips ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.tips li {
  position: relative;
  padding: 14px 16px 14px 44px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 15px;
}
.tips li::before {
  content: "";
  position: absolute;
  left: 16px; top: 50%;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--grad-1);
  transform: translateY(-50%);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--primary) 14%, transparent);
}

/* ------- Sobre ------- */
.about { padding: clamp(80px, 9vw, 130px) 0; }

/* ------- Footer ------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  color: var(--ink-dim);
  font-size: 14px;
}
.site-footer p { margin: 4px 0; }

/* ------- Cursor Glow (segue o mouse) ------- */
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 520px;
  height: 520px;
  margin-left: -260px;
  margin-top: -260px;
  pointer-events: none;
  border-radius: 50%;
  /* Mesma cor lima dos orbs decorativos do .ambient. Removido o
     mix-blend-mode: screen que lavava a cor pra um branco-ish —
     agora mantém a saturação lima visível, igual aos orbs do site. */
  background: radial-gradient(
    closest-side,
    color-mix(in oklab, var(--primary) 50%, transparent) 0%,
    color-mix(in oklab, var(--primary) 15%, transparent) 40%,
    transparent 75%
  );
  filter: blur(60px);
  opacity: 0;
  z-index: 2;
  transform: translate3d(-9999px, -9999px, 0);
  transition: opacity 480ms ease;
  will-change: transform, opacity;
}
.cursor-glow.is-active { opacity: .18; }

/* Em telas sem hover (touch) ou movimento reduzido, escondemos. */
@media (hover: none), (prefers-reduced-motion: reduce) {
  .cursor-glow { display: none; }
}

/* ------- Animações ------- */
@keyframes float {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50%      { transform: translate3d(0, -20px, 0) scale(1.05); }
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(.2,.6,.2,1);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ------- Controles de tamanho de fonte (A- / A+) ------- */
.fs-controls {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
  background: var(--bg-elev);
}
.fs-controls button {
  appearance: none;
  background: transparent;
  border: 0;
  color: var(--ink);
  font-family: inherit;
  font-weight: 600;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t-fast), color var(--t-fast), opacity var(--t-fast);
}
.fs-controls button:hover:not(:disabled) {
  background: color-mix(in oklab, var(--primary) 20%, transparent);
  color: var(--primary);
}
.fs-controls button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.fs-controls .fs-decrease { font-size: 11px; }
.fs-controls .fs-increase { font-size: 15px; }

/* ------- Ícones SVG nos step cards ------- */
.step-icon {
  width: 38px;
  height: 38px;
  display: block;
  color: var(--primary);
  flex-shrink: 0;
}
/* Cabeçalho do card: número à esquerda, ícone à direita. */
.step-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.step-head .step-num { margin-bottom: 0; }

/* ------- Metodologia ------- */
.methodology { padding: clamp(80px, 9vw, 130px) 0; }
.methodology-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 40px;
}
.method-card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  position: relative;
  transition: border-color var(--t-med), transform var(--t-med), filter var(--t-med);
}
/* Hover focado: o card sob o cursor cresce e ganha destaque, enquanto
   os outros desfocam (mesmo padrão dos cards de Processo). */
@media (hover: hover) {
  .methodology-grid:hover .method-card {
    filter: blur(2px) brightness(.7);
    transform: scale(.97);
  }
  .methodology-grid:hover .method-card:hover {
    filter: none;
    transform: translateY(-6px) scale(1.04);
    border-color: color-mix(in oklab, var(--primary) 45%, var(--line));
    z-index: 2;
  }
}
@media (prefers-reduced-motion: reduce) {
  .methodology-grid:hover .method-card,
  .methodology-grid:hover .method-card:hover {
    filter: none;
    transform: none;
  }
}
.method-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  margin: 0 0 10px;
  color: var(--primary);
  letter-spacing: -0.01em;
}
.method-card p {
  margin: 0 0 14px;
  color: var(--ink-dim);
  font-size: 0.95rem;
  line-height: 1.6;
}
.method-card p strong { color: var(--ink); font-weight: 600; }
.method-card .source {
  font-size: 0.78rem;
  color: var(--ink-dim);
  opacity: 0.7;
  display: block;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}

/* Nota pessoal do autor — bloco em destaque na seção Sobre,
   cor lima sutil pra distinguir do parágrafo lead. */
.author-note {
  margin-top: 32px;
  padding: 24px 28px;
  background: color-mix(in oklab, var(--primary) 6%, transparent);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 70ch;
}
.author-note strong {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 10px;
  font-weight: 600;
  letter-spacing: -0.005em;
}

/* ------- Botão copiar resumo no resultado ------- */
.copy-btn {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: 999px;
  cursor: pointer;
  margin-top: 4px;
  transition: background var(--t-fast), border-color var(--t-fast),
              color var(--t-fast);
  align-self: start;
}
.copy-btn:hover {
  background: color-mix(in oklab, var(--primary) 12%, transparent);
  border-color: color-mix(in oklab, var(--primary) 45%, var(--line));
}
.copy-btn.copied {
  background: color-mix(in oklab, var(--primary) 22%, transparent);
  border-color: var(--primary);
  color: var(--primary);
}

/* ------- Skip link (acessibilidade — Tab pra aparecer) ------- */
.skip-link {
  position: absolute;
  top: 0;
  left: 12px;
  z-index: 999;
  background: var(--primary);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  transform: translateY(-150%);
  transition: transform var(--t-fast);
}
.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ------- Outline customizado em foco por teclado ------- */
a:focus-visible,
button:focus-visible,
.glossary:focus-visible,
.fs-controls button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ------- Glossário (tooltip nos termos técnicos) ------- */
.glossary {
  text-decoration: underline dotted;
  text-decoration-color: color-mix(in oklab, var(--primary) 60%, transparent);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  cursor: help;
  position: relative;
  font-weight: inherit;
}
.glossary::after {
  content: attr(data-glossary);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--bg-elev);
  border: 1px solid color-mix(in oklab, var(--primary) 40%, var(--line));
  color: var(--ink);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 400;
  line-height: 1.5;
  text-decoration: none;
  white-space: normal;
  width: max-content;
  max-width: 280px;
  text-align: left;
  letter-spacing: 0;
  text-transform: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 240ms ease, transform 240ms cubic-bezier(.2, .6, .2, 1);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 100;
}
.glossary:hover::after,
.glossary:focus::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ------- Validação visual no formulário ------- */
.field-error {
  display: block;
  min-height: 1.2em;
  margin-top: 6px;
  font-size: 13px;
  color: #ff8a8a;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity var(--t-fast), transform var(--t-fast);
}
.field.has-error input,
.field.has-error select {
  border-color: #ff6b6b;
  background: color-mix(in oklab, #ff6b6b 6%, var(--bg-soft));
}
.field.has-error input:focus,
.field.has-error select:focus {
  border-color: #ff8a8a;
  box-shadow: 0 0 0 3px color-mix(in oklab, #ff6b6b 22%, transparent);
}
.field.has-error .field-error {
  opacity: 1;
  transform: translateY(0);
}

/* ------- Toast notification ------- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  background: var(--bg-elev);
  border: 1px solid color-mix(in oklab, var(--primary) 40%, var(--line));
  color: var(--ink);
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  max-width: 360px;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 280ms ease, transform 280ms cubic-bezier(.2, .6, .2, 1);
}
.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ------- Grupo de botões de ação no resultado ------- */
.result-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 4px;
}

/* ------- Scrollbar customizada (Webkit/Chromium + Firefox) ------- */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: color-mix(in oklab, var(--primary) 28%, var(--line));
  border-radius: 999px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover {
  background: color-mix(in oklab, var(--primary) 45%, var(--line));
}
html {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in oklab, var(--primary) 30%, var(--line)) var(--bg);
}

/* ------- Print styles — quando o usuário imprime/salva PDF ------- */
@media print {
  /* Esconde decoração e seções não-resultado */
  .site-header, .site-footer, .ambient, .cursor-glow, .skip-link, .toast,
  .hero, #como-funciona, #metodologia, #sobre {
    display: none !important;
  }
  /* Dentro da seção Calculadora, esconde tudo menos o resultado */
  #calculadora > .container > *:not(#result) {
    display: none !important;
  }
  /* Esconde também os botões de ação dentro do resultado */
  .result-actions {
    display: none !important;
  }
  body {
    background: white;
    color: black;
  }
  .calc-result {
    background: white;
    border: 1px solid #ccc;
    color: black;
    box-shadow: none;
    page-break-inside: avoid;
    margin: 0;
  }
  .result-rating { color: black; background: none; border: 1px solid #999; }
  .result-value, .breakdown-item .val { color: #222; }
  .result-equivalences { background: none; border-left: 2px solid #999; color: #222; }
  .result-equivalences strong { color: #222; }
  .breakdown-bar { display: none; }
  .tips h3 { color: #222; }
  .tips ul { margin: 0; padding-left: 20px; }
  .tips li { color: #333; break-inside: avoid; }
}

/* ------- Responsividade dos novos elementos ------- */
@media (max-width: 720px) {
  .fs-controls { display: none; }
  .toast { left: 16px; right: 16px; bottom: 16px; max-width: none; }
  .glossary::after { max-width: 220px; }
}

/* ------- Responsivo ------- */
@media (max-width: 720px) {
  .main-nav { display: none; }
  .nav { gap: 12px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
}