/*
 * Site público do KN Clima Tech. Linguagem da família KN (kndojodigital.com.br,
 * knsolucaodigital.com.br): herói escuro com tipografia grande e ponto de destaque, faixa de
 * palavras, seções numeradas "01 / ..." e cartões de borda fina. Tokens do documento 4:
 * marinho KN, um único azul de destaque, cores planas (sem degradê, sem brilho), IBM Plex Sans
 * servida pelo próprio site.
 */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/plex-sans-400.woff2') format('woff2');
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/fonts/plex-sans-600.woff2') format('woff2');
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/fonts/plex-sans-700.woff2') format('woff2');
}

:root {
  /* claro (60%) */
  --bg: #f5f7fa;
  --surface: #ffffff;
  --border: #dde3ea;
  --text: #0b1b33;
  --text-secondary: #4e5d70;
  --accent: #1d64d8;
  --on-accent: #ffffff;
  /* escuro (30%: marinho KN) */
  --ink: #070f1d;
  --ink-2: #0a1424;
  --ink-surface: #111e33;
  --ink-border: #23324a;
  --ink-text: #e6edf5;
  --ink-muted: #9aa8ba;
  --ink-accent: #5b97f7;
  --success: #16794a;
  --success-ink: #3dbe7c;
  --radius: 8px;
  --font: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color-scheme: light;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

h1,
h2,
h3 {
  line-height: 1.1;
  margin: 0;
  letter-spacing: -0.02em;
}

:focus-visible {
  outline: 3px solid var(--ink-accent);
  outline-offset: 3px;
}

.wrap {
  width: min(1200px, 100% - 40px);
  margin-inline: auto;
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--surface);
  color: var(--text);
  padding: 8px 12px;
  border-radius: var(--radius);
  z-index: 10;
}

.skip:focus {
  left: 8px;
}

.dot,
.accent {
  color: var(--accent);
}

.dark .dot,
.dark .accent,
.hero .dot,
.top .dot,
.foot .dot {
  color: var(--ink-accent);
}

.ico {
  display: inline-block;
  vertical-align: -2px;
}

/* ---------- Topo ---------- */
.top {
  background: var(--ink);
  color: var(--ink-text);
  border-bottom: 1px solid var(--ink-border);
}

.top-row {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-text);
  text-decoration: none;
}

.brand-kn {
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.04em;
}

.brand-name {
  font-size: 12px;
  font-weight: 600;
  line-height: 1.15;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
}

.top nav {
  display: flex;
  gap: 4px;
  margin-inline: auto;
}

.top nav a {
  color: var(--ink-text);
  text-decoration: none;
  font-size: 15px;
  padding: 10px 14px;
  border-radius: var(--radius);
}

.top nav a:hover {
  background: var(--ink-surface);
}

.nav-login {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  padding: 10px 18px;
  border: 1px solid var(--ink-border);
  border-radius: 999px;
}

.nav-login:hover {
  border-color: var(--ink-accent);
}

/* ---------- Botões ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    transform 0.15s ease,
    background-color 0.15s ease;
}

.btn:hover .ico {
  transform: translate(2px, -2px);
}

.btn .ico {
  transition: transform 0.15s ease;
}

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

.btn-primary:hover {
  background: #1853b3;
}

.btn-outline {
  color: var(--ink-text);
  border-color: var(--ink-border);
}

.btn-outline:hover {
  border-color: var(--ink-accent);
}

.btn-dark {
  background: var(--ink-2);
  color: var(--ink-text);
}

.btn-dark:hover {
  background: var(--ink-surface);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 32px 0 0;
}

/* ---------- Herói ---------- */
.hero {
  background-color: var(--ink);
  background-image:
    linear-gradient(var(--ink-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-2) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--ink-text);
  padding: 88px 0 96px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.eyebrow,
.kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 24px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-accent);
}

.eyebrow::before {
  content: '';
  width: 40px;
  height: 1px;
  background: currentColor;
}

.light .kicker {
  color: var(--accent);
}

.hero h1 {
  font-size: clamp(48px, 7.4vw, 96px);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.hero-lead {
  font-size: 19px;
  color: var(--ink-muted);
  max-width: 560px;
  margin: 28px 0 0;
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.rule {
  width: 32px;
  height: 1px;
  background: var(--ink-muted);
}

/* Celular e orçamento (só HTML e CSS) */
.hero-art {
  position: relative;
  min-height: 520px;
}

.phone {
  position: absolute;
  right: 40px;
  top: 0;
  width: 300px;
  background: var(--ink-surface);
  border: 1px solid var(--ink-border);
  border-radius: 28px;
  padding: 28px 22px 22px;
  box-shadow: 0 24px 48px rgb(0 0 0 / 45%);
}

.phone-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-muted);
}

.pill {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
}

.pill-live {
  color: var(--ink-accent);
  background: rgb(91 151 247 / 14%);
}

.phone-client {
  margin: 18px 0 2px;
  font-weight: 600;
  font-size: 15px;
}

.phone-timer {
  margin: 0;
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.checks {
  list-style: none;
  padding: 0;
  margin: 14px 0;
  display: grid;
  gap: 8px;
}

.checks li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-muted);
  padding: 10px 12px;
  border: 1px solid var(--ink-border);
  border-radius: var(--radius);
}

.checks li::before {
  content: '';
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1.5px solid var(--ink-muted);
}

.checks li.ok {
  color: var(--ink-text);
}

.checks li.ok::before {
  background: var(--success-ink);
  border-color: var(--success-ink);
}

.phone-sync {
  font-size: 12px;
  color: var(--ink-muted);
  margin: 0 0 12px;
}

.phone-btn {
  display: block;
  text-align: center;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  font-size: 14px;
  padding: 13px;
  border-radius: var(--radius);
}

.doc {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 270px;
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 24px 48px rgb(0 0 0 / 40%);
  font-size: 13px;
  border-top: 4px solid var(--accent);
}

.doc-head {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
  line-height: 1.3;
}

.doc-head small {
  color: var(--text-secondary);
}

.doc-logo {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: #0b7480;
  color: #fff;
  font-weight: 700;
  font-size: 13px;
}

.doc-line {
  display: flex;
  justify-content: space-between;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}

.doc-total {
  font-weight: 700;
  border-bottom: 0;
}

.doc-ok {
  margin: 8px 0 0;
  color: var(--success);
  font-weight: 600;
}

/* ---------- Faixa de palavras ---------- */
.marquee {
  background: var(--ink-2);
  border-block: 1px solid var(--ink-border);
  overflow: hidden;
  padding: 18px 0;
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 36px;
  width: max-content;
  animation: marquee 40s linear infinite;
  color: var(--ink-muted);
}

.marquee-track span {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}

.marquee-track svg {
  color: var(--ink-accent);
  flex: none;
}

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .marquee-track {
    animation: none;
  }

  .btn,
  .btn .ico {
    transition: none;
  }
}

/* ---------- Seções ---------- */
.section {
  padding: 112px 0;
}

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

.section.dark {
  background: var(--ink);
  color: var(--ink-text);
}

.section h2 {
  font-size: clamp(34px, 4.6vw, 56px);
  font-weight: 700;
  letter-spacing: -0.035em;
}

.section-head {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: end;
  margin-bottom: 56px;
}

.section-lead {
  margin: 0;
  color: var(--text-secondary);
  font-size: 17px;
}

.dark .section-lead {
  color: var(--ink-muted);
  margin-top: 24px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

/* Cartões numerados (bordas compartilhadas) */
.cells {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.cell {
  background: var(--surface);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 28px;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease;
}

.cell:hover {
  background: #fafbfd;
}

.cell-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: auto;
  padding-bottom: 40px;
}

.cell-num {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
}

.cell-ico {
  color: var(--accent);
}

.cell h3 {
  font-size: 21px;
  margin-bottom: 10px;
}

.cell p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 15px;
}

/* Linha do tempo */
.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--ink-border);
}

.timeline li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  padding: 28px 0;
  border-bottom: 1px solid var(--ink-border);
}

.t-num {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-accent);
  letter-spacing: 0.08em;
  padding-top: 4px;
}

.timeline strong {
  font-size: 22px;
  letter-spacing: -0.01em;
}

.timeline p {
  margin: 6px 0 0;
  color: var(--ink-muted);
}

/* Planos */
.plans {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.plan {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.plan-featured {
  background: var(--ink);
  color: var(--ink-text);
  border-color: var(--ink);
}

.plan-tag {
  margin: 0 0 18px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.plan-featured .plan-tag {
  color: var(--ink-accent);
}

.plan h3 {
  font-size: 28px;
}

.plan-users {
  margin: 4px 0 24px;
  color: var(--text-secondary);
}

.price {
  margin: 0;
  font-size: 54px;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.price span {
  font-size: 20px;
  font-weight: 600;
  vertical-align: top;
  margin-right: 4px;
  letter-spacing: 0;
}

.price small {
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--text-secondary);
}

.plan-year,
.plan-extra {
  margin: 10px 0 0;
  font-size: 15px;
  color: var(--text-secondary);
}

.plan-featured .plan-users,
.plan-featured .price small,
.plan-featured .plan-year,
.plan-featured .plan-extra {
  color: var(--ink-muted);
}

.plan .btn {
  margin-top: 32px;
}

.fine {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 20px 0 0;
}

/* Perguntas */
.faq-section {
  border-top: 1px solid var(--border);
}

.faq details {
  border-bottom: 1px solid var(--border);
}

.faq details:first-child {
  border-top: 1px solid var(--border);
}

.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  font-weight: 600;
  font-size: 18px;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: '+';
  font-weight: 400;
  font-size: 24px;
  line-height: 1;
  color: var(--accent);
}

.faq details[open] summary::after {
  content: '−';
}

.faq details p {
  margin: 0 0 22px;
  color: var(--text-secondary);
}

/* Chamada final */
.closing h2 {
  font-size: clamp(40px, 6vw, 80px);
}

.closing .kicker::before {
  content: '';
  width: 40px;
  height: 1px;
  background: currentColor;
}

/* ---------- Rodapé ---------- */
.foot {
  background: var(--ink);
  color: var(--ink-muted);
  border-top: 1px solid var(--ink-border);
  font-size: 15px;
}

.foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.3fr;
  gap: 40px;
  padding: 64px 0 48px;
}

.foot-tag {
  max-width: 360px;
  margin: 16px 0 0;
}

.foot-links {
  display: grid;
  gap: 10px;
  align-content: start;
}

.foot-links a {
  color: var(--ink-text);
  text-decoration: none;
}

.foot-links a:hover {
  color: var(--ink-accent);
}

.foot-base {
  border-top: 1px solid var(--ink-border);
  padding: 24px 0 32px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.foot-base p {
  margin: 0;
}

/* ---------- Páginas internas (ajuda e documentos) ---------- */
.page-head,
.article {
  max-width: 820px;
  padding-top: 56px;
  padding-bottom: 72px;
}

.page-head {
  padding-bottom: 24px;
}

.page-head h1,
.article h1 {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: -0.035em;
  margin-bottom: 16px;
}

.crumbs {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.lead {
  font-size: 19px;
  color: var(--text-secondary);
  margin: 0;
}

.grid {
  list-style: none;
  padding: 0;
  margin: 0 0 80px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.card {
  background: var(--surface);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 24px;
}

.card-title {
  font-size: 19px;
  margin-bottom: 8px;
}

.card-title a {
  color: var(--text);
  text-decoration: none;
}

.card-title a:hover {
  color: var(--accent);
}

.card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 15px;
}

.howto {
  counter-reset: h;
  list-style: none;
  padding: 0;
  margin: 32px 0;
  border-top: 1px solid var(--border);
}

.howto li {
  counter-increment: h;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 12px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.howto li::before {
  content: counter(h, decimal-leading-zero);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding-top: 3px;
}

.pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 32px;
}

.pager a {
  font-weight: 600;
  text-decoration: none;
}

.legal section {
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.legal h2 {
  font-size: 22px;
  margin: 0 0 12px;
}

.legal section p {
  margin: 0 0 12px;
}

/* ---------- Telas menores ---------- */
@media (max-width: 960px) {
  .hero-grid,
  .section-head,
  .split {
    grid-template-columns: 1fr;
  }

  .hero-art {
    min-height: 500px;
    max-width: 480px;
  }

  .cells,
  .grid,
  .plans {
    grid-template-columns: 1fr 1fr;
  }

  .foot-grid {
    grid-template-columns: 1fr 1fr;
  }

  .foot-grid > div:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .top nav {
    display: none;
  }

  .nav-login {
    margin-left: auto;
  }

  .hero {
    padding: 56px 0 64px;
  }

  .hero-art {
    min-height: 470px;
  }

  .phone {
    right: 0;
    width: 260px;
  }

  .doc {
    width: 230px;
  }

  .section {
    padding: 72px 0;
  }

  .cells,
  .grid,
  .plans,
  .foot-grid {
    grid-template-columns: 1fr;
  }

  .cell {
    min-height: 0;
  }

  .cell-top {
    padding-bottom: 24px;
  }

  .btn {
    width: 100%;
  }
}