:root {
  --primary: #0b5fa8;
  --primary-dark: #001c3a;
  --primary-light: #d3e4ff;
  --secondary: #b56a1a;
  --secondary-light: #ffddb8;
  --bg: #fdfcff;
  --surface: #ffffff;
  --surface-variant: #eef1f6;
  --text: #1a1c1e;
  --text-muted: #43474e;
  --border: #dfe2eb;
  --radius: 14px;
  --max-width: 1120px;
  --danger: #b3261e;
  --on-primary: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #9fc9ff;
    --primary-dark: #d3e4ff;
    --primary-light: #004883;
    --secondary: #ffb868;
    --secondary-light: #864f00;
    --bg: #16181a;
    --surface: #1e2023;
    --surface-variant: #26292d;
    --text: #e3e2e6;
    --text-muted: #c3c6cf;
    --border: #3a3d42;
    --danger: #ff8a80;
    --on-primary: #00315f;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--primary);
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

header.site-header {
  position: sticky;
  top: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--text);
}

.brand img {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
}

.nav-links a:hover {
  color: var(--primary);
}

/* Menu no celular (decisão 99): um botão "Menu" abre os links numa coluna embaixo do cabeçalho.
   Só vale depois que assets/nav.js marca o cabeçalho com .nav-ready; sem JS, os links aparecem
   como antes. */
.nav-toggle {
  display: none;
}

@media (max-width: 860px) {
  .site-header.nav-ready .nav {
    flex-wrap: wrap;
  }

  .site-header.nav-ready .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: transparent;
    color: var(--text);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
  }

  .site-header.nav-ready .nav-toggle .icon-close,
  .site-header.nav-open .nav-toggle .icon-open {
    display: none;
  }

  .site-header.nav-open .nav-toggle .icon-close {
    display: block;
  }

  .site-header.nav-ready .nav-links {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
    border-top: 1px solid var(--border);
    padding-top: 6px;
  }

  .site-header.nav-open .nav-links {
    display: flex;
  }

  .site-header.nav-ready .nav-links a {
    padding: 12px 0;
    font-size: 1rem;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  font-size: 0.95rem;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
}

.btn-secondary {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}

.btn-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero {
  padding: 64px 20px 48px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 860px) {
  .hero .container {
    grid-template-columns: 1fr;
  }
}

.eyebrow {
  color: var(--secondary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  margin-bottom: 10px;
}

.hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.15;
  margin: 0 0 16px;
}

.hero p.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 26px;
  max-width: 52ch;
}

.hero-art {
  background: linear-gradient(160deg, var(--primary-light), var(--surface));
  border-radius: 24px;
  padding: 32px;
  text-align: center;
}

.hero-art img {
  margin: 0 auto;
  width: 160px;
  height: 160px;
}

section {
  padding: 56px 0;
}

section.alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 8px;
}

.section-intro {
  color: var(--text-muted);
  max-width: 60ch;
  margin-bottom: 36px;
}

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

section.alt .card {
  background: var(--bg);
}

.card h3 {
  margin-top: 0;
  font-size: 1.05rem;
}

.card p {
  color: var(--text-muted);
  margin-bottom: 0;
  font-size: 0.95rem;
}

.screenshot {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface-variant);
}

/* Os prints são 16:10 e a imagem do WhatsApp é quadrada: a moldura igual deixa a grade alinhada. */
.screenshot img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: contain;
}

.screenshot figcaption {
  padding: 12px 16px 14px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.screenshot figcaption strong {
  color: var(--text);
}

.gallery {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Vídeo com carregamento no clique (decisão 120): até lá é só uma imagem com botão. */
.video {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface-variant);
}

.video-play {
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  cursor: pointer;
  background: none;
}

.video-play img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-play-icon {
  position: absolute;
  inset: 50% auto auto 50%;
  width: 84px;
  height: 84px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
}

.video-play-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 54%;
  transform: translate(-50%, -50%);
  border-style: solid;
  border-width: 16px 0 16px 26px;
  border-color: transparent transparent transparent var(--on-primary);
}

.video-play:hover .video-play-icon,
.video-play:focus-visible .video-play-icon {
  transform: translate(-50%, -50%) scale(1.08);
}

.video iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.video-note {
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.pipeline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
}

.pipeline-step {
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.85rem;
  white-space: nowrap;
}

.pipeline-arrow {
  color: var(--text-muted);
  font-weight: 700;
}

.formula-box {
  background: var(--surface-variant);
  border-radius: var(--radius);
  padding: 20px 24px;
  overflow-x: auto;
  font-family: "Courier New", monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: pre-wrap;
}

details.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 12px;
}

section.alt details.faq-item {
  background: var(--bg);
}

details.faq-item summary {
  font-weight: 700;
  cursor: pointer;
}

details.faq-item p {
  color: var(--text-muted);
  margin-bottom: 0;
  margin-top: 10px;
}

.steps {
  display: grid;
  gap: 20px;
}

.step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
}

.step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.step h3 {
  margin: 4px 0 6px;
}

.step p {
  color: var(--text-muted);
  margin: 0;
}

footer.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

footer.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
}

footer.site-footer a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
}

footer.site-footer a:hover {
  color: var(--primary);
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.table-wrap {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9rem;
}

th, td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}

th {
  background: var(--surface-variant);
}

.badge-os {
  display: inline-block;
  background: var(--secondary-light);
  color: var(--text);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.78rem;
  font-weight: 700;
  margin-right: 6px;
}

/* Calculadora */

.calc-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: start;
}

@media (max-width: 860px) {
  .calc-layout {
    grid-template-columns: 1fr;
  }
}

.calc-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: grid;
  gap: 18px;
  min-width: 0;
}

.calc-form fieldset {
  border: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
  min-width: 0;
}

.calc-form legend {
  padding: 0;
  margin-bottom: 4px;
  font-weight: 700;
  font-size: 1.05rem;
}

.field {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.field label {
  font-weight: 600;
  font-size: 0.9rem;
}

.field input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

.field input:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

.field-hint {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  min-width: 0;
}

.calc-advanced {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  display: grid;
  gap: 16px;
  min-width: 0;
}

.calc-advanced summary {
  margin-bottom: 4px;
  font-weight: 700;
  cursor: pointer;
}

.calc-advanced[open] summary {
  margin-bottom: 12px;
}

.calc-result {
  display: grid;
  gap: 20px;
  align-content: start;
  min-width: 0;
}

@media (min-width: 861px) {
  .calc-result {
    position: sticky;
    top: 84px;
  }
}

.result-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.result-label {
  margin: 0 0 4px;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.result-total {
  margin: 0 0 4px;
  color: var(--primary);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  word-break: break-word;
}

.result-unit {
  margin: 0 0 16px;
  color: var(--text-muted);
}

.result-lines {
  display: grid;
  gap: 8px;
  margin: 16px 0;
}

.result-lines div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.95rem;
}

.result-lines dt {
  color: var(--text-muted);
}

.result-lines dd {
  margin: 0;
  font-weight: 700;
  text-align: right;
}

.result-breakdown {
  list-style: none;
  margin: 16px 0 0;
  padding: 12px 0 0;
  display: grid;
  gap: 6px;
  border-top: 1px solid var(--border);
}

.result-breakdown li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.result-placeholder {
  margin: 0;
  color: var(--text-muted);
}

.result-error {
  margin: 0;
  color: var(--danger);
  font-weight: 600;
}

.result-breakdown li.app-only {
  opacity: 0.75;
}

.app-only-tag {
  font-size: 0.75rem;
  font-weight: 700;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 1px 8px;
  white-space: nowrap;
}

.result-note {
  margin: 12px 0 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.calc-result-more {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
}

.calc-hero {
  padding-bottom: 8px;
}

.calc-section {
  padding-top: 24px;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 14px;
  align-items: start;
}

@media (max-width: 480px) {
  .field-grid {
    grid-template-columns: 1fr;
  }
}

.input-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.input-unit {
  position: relative;
  display: block;
  min-width: 0;
}

.input-unit input {
  padding-right: 40px;
}

.input-unit > span {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
  pointer-events: none;
}

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

.compare-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.compare-table th,
.compare-table td {
  background: transparent;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.compare-table thead th {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.compare-table thead th:last-child {
  color: var(--primary);
}

.compare-table tbody th {
  font-weight: 600;
}

.compare-table td {
  width: 22%;
  text-align: center;
  white-space: nowrap;
}

.compare-table thead th:not(:first-child) {
  text-align: center;
}

.compare-table td.yes {
  color: var(--primary);
  font-weight: 700;
  font-size: 1.1rem;
}

.compare-table td.no {
  color: var(--text-muted);
  font-size: 0.85rem;
}

@media (max-width: 560px) {
  .compare-table th,
  .compare-table td {
    padding: 10px 8px;
    font-size: 0.85rem;
  }

  .compare-table td {
    width: 76px;
  }

  .compare-table thead th {
    font-size: 0.68rem;
    letter-spacing: 0;
  }
}

.compare-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 24px;
}

.compare-cta-note {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Página de imprensa (decisão 120) */
.press-copy {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 20px;
}

.press-copy-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.press-copy-head h3 {
  margin: 0;
  font-size: 1.05rem;
}

.copy-btn {
  font-family: inherit;
  padding: 6px 16px;
  font-size: 0.9rem;
}

.press-copy p {
  color: var(--text-muted);
  margin-bottom: 0;
}

.press-facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 10px 28px;
  margin: 0;
}

.press-facts dt {
  font-weight: 600;
}

.press-facts dd {
  margin: 0;
  color: var(--text-muted);
}

@media (max-width: 560px) {
  .press-facts {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .press-facts dd {
    margin-bottom: 10px;
  }
}