/* ═══ Link Tools — Design System & Download Page ═══
   Identidade visual alinhada com o Link (https://linkgestao.ktechstudio.com.br)
   Tipografia: Instrument Sans | Suporte completo a Modo Claro e Escuro
*/

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

[hidden] {
  display: none !important;
}

/* ── Variáveis & Tokens do Link (Turquesa Oficial / Modo Claro) ── */
:root {
  --ease: cubic-bezier(.2, .8, .2, 1);
  --bg: #ebf2f7;
  --surface: #ffffff;
  --surface-2: #f2f7fa;
  --surface-3: #e4edf3;
  --border: #d8e4ec;
  --border-strong: #bccfdb;
  --text: #101c24;
  --text-dim: #3e5361;
  --text-mut: #627989;

  /* Turquesa Oficial do Link (Base do Azulejo #3589ac / Luz #67b2cd / Sombra #065980) */
  --accent: #237b9e;
  --accent-strong: #175d7b;
  --accent-soft: #e5f3f7;
  --accent-border: #b5d9e8;

  /* Status e Sucesso */
  --ok: #15794c;
  --ok-bg: #e6f6ee;
  --ok-fill: #1ea367;
  --ok-soft: #f2faf6;

  /* Informação / Azul */
  --info: #1b6ca8;
  --info-bg: #e8f3fa;
  --info-soft: #f3f8fc;

  /* Tipografia */
  --font: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Escala de texto do Link */
  --fs-xs: 12px;
  --fs-sm: 13px;
  --fs-md: 14px;
  --fs-lg: 16px;
  --fs-xl: 20px;
  --fs-2xl: 28px;
  --fs-hero: clamp(34px, 5.5vw, 56px);

  --shadow-sm: 0 2px 8px rgba(10, 25, 36, .04);
  --shadow-md: 0 12px 30px rgba(10, 25, 36, .08);
  --shadow-lg: 0 24px 60px rgba(10, 25, 36, .12);
}

/* ── Modo Escuro (Turquesa Oficial do Link) ── */
:root[data-tema="escuro"] {
  color-scheme: dark;
  --bg: #0e151b;
  --surface: #152028;
  --surface-2: #1b2833;
  --surface-3: #22323f;
  --border: #243542;
  --border-strong: #364e61;
  --text: #eaf2f7;
  --text-dim: #adc2d1;
  --text-mut: #7d96a7;

  --accent: #4baecc;
  --accent-strong: #72cbdf;
  --accent-soft: #142a35;
  --accent-border: #254a5c;

  --ok: #6fdca4;
  --ok-bg: #13382a;
  --ok-fill: #2fb578;
  --ok-soft: #0f2a20;

  --info: #78b8e6;
  --info-bg: #142838;
  --info-soft: #0f1f2c;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, .45);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, .6);
}

/* ── Base ── */
html {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text);
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
  -webkit-font-smoothing: antialiased;
  transition: background-color .3s var(--ease), color .3s var(--ease);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  line-height: 1.5;
}

/* ── Container ── */
.wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

/* ── Topo / Barra de Navegação ── */
.topo {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.topo-wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 68px;
}

.marca {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -.02em;
  text-decoration: none;
  color: var(--text);
}

.marca img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 8px;
}

.marca .marca-sub {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 7px;
  border-radius: 6px;
}

.nav {
  display: flex;
  gap: 6px;
  margin-left: 16px;
}

.nav a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-dim);
  text-decoration: none;
  transition: background .2s, color .2s;
}

.nav a:hover {
  background: var(--surface-2);
  color: var(--text);
}

.topo-acoes {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Botão de Tema */
.btn-tema {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0;
  transition: color .2s, border-color .2s, background .2s, transform .15s;
}

.btn-tema:hover {
  color: var(--accent-strong);
  border-color: var(--accent-border);
  transform: scale(1.05);
}

.btn-tema svg {
  width: 18px;
  height: 18px;
  grid-area: 1 / 1;
}

html:not([data-tema="escuro"]) .btn-tema .ic-sol,
html[data-tema="escuro"] .btn-tema .ic-lua {
  display: none;
}

/* ── Botões Padrão Link ── */
.cd-b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  font-family: inherit;
  font-size: var(--fs-sm);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: all .2s var(--ease);
}

.cd-b:hover {
  background: var(--surface-2);
  border-color: var(--border-strong);
  color: var(--text);
  transform: translateY(-1px);
}

.cd-b.prim {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 35%, transparent);
}

.cd-b.prim:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: #ffffff;
  box-shadow: 0 6px 20px color-mix(in srgb, var(--accent) 45%, transparent);
}

.cd-b.lg {
  padding: 15px 30px;
  font-size: var(--fs-lg);
  border-radius: 12px;
}

/* ── Hero / Seção Principal ── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 80px 0 70px;
  text-align: center;
}

.fundo-gradiente {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.fundo-gradiente i {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .45;
  transition: opacity .3s;
}

.fundo-gradiente .blob-1 {
  width: 45vmax;
  height: 45vmax;
  left: -15vmax;
  top: -20vmax;
  background: #6bb9d4;
}

.fundo-gradiente .blob-2 {
  width: 40vmax;
  height: 40vmax;
  right: -10vmax;
  top: -5vmax;
  background: #56c2c7;
}

:root[data-tema="escuro"] .fundo-gradiente i {
  opacity: .25;
}
:root[data-tema="escuro"] .fundo-gradiente .blob-1 {
  background: #153c4d;
}
:root[data-tema="escuro"] .fundo-gradiente .blob-2 {
  background: #134245;
}

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

/* Badges */
.badge-offline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--ok-soft);
  border: 1px solid var(--ok);
  color: var(--ok);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .02em;
  margin-bottom: 24px;
}

.badge-offline span.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok-fill);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok-fill) 30%, transparent);
}

.hero h1 {
  font-size: var(--fs-hero);
  line-height: 1.08;
  letter-spacing: -.035em;
  margin: 0 auto;
  max-width: 900px;
  font-weight: 700;
  color: var(--text);
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p.sub {
  max-width: 720px;
  margin: 20px auto 0;
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ── Caixa de Download Windows ── */
.download-box {
  margin: 44px auto 0;
  max-width: 680px;
  padding: 32px 36px;
  border-radius: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 24px;
  transition: all .3s var(--ease);
}

.download-topo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 20px;
  flex-wrap: wrap;
}

.os-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.os-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.os-icon svg {
  width: 26px;
  height: 26px;
}

.os-detalhes h3 {
  font-size: var(--fs-xl);
  font-weight: 700;
  letter-spacing: -.02em;
}

.os-detalhes p {
  font-size: var(--fs-sm);
  color: var(--text-mut);
}

.versao-pill {
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--surface-3);
  color: var(--text-dim);
  font-size: var(--fs-xs);
  font-weight: 700;
  font-family: var(--mono);
}

.download-acoes {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.btn-download-win {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 24px;
  font-size: var(--fs-lg);
  font-weight: 700;
  border-radius: 14px;
}

.btn-download-win svg {
  width: 22px;
  height: 22px;
}

.download-opcoes-extras {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-sm);
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 10px;
  padding: 4px 6px;
}

.download-opcoes-extras a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.download-opcoes-extras a:hover {
  text-decoration: underline;
}

.download-seguranca {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-xs);
  color: var(--text-mut);
}

.download-seguranca svg {
  width: 15px;
  height: 15px;
  color: var(--ok);
  flex-shrink: 0;
}

/* ── Recursos / Vitrine de Ferramentas ── */
.secao {
  padding: 84px 0;
}

.secao.alt {
  background: var(--surface);
  border-block: 1px solid var(--border);
}

.secao-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px;
}

.secao-rotulo {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
}

.secao-header h2 {
  font-size: clamp(26px, 4vw, 36px);
  letter-spacing: -.02em;
  margin-top: 8px;
  line-height: 1.15;
}

.secao-header p {
  margin-top: 12px;
  color: var(--text-dim);
  font-size: var(--fs-lg);
  line-height: 1.6;
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  padding: 28px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: transform .3s var(--ease), box-shadow .3s, border-color .3s;
  display: flex;
  flex-direction: column;
}

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

.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-border);
  box-shadow: var(--shadow-md);
}

.card-ico {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 18px;
}

.card-ico svg {
  width: 24px;
  height: 24px;
}

.card h3 {
  font-size: 18px;
  letter-spacing: -.01em;
  font-weight: 700;
}

.card p {
  margin-top: 8px;
  font-size: var(--fs-md);
  line-height: 1.6;
  color: var(--text-dim);
}

.card .tag {
  margin-top: auto;
  padding-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--accent);
}

/* ── Comparativo / Privacidade ── */
.destaque-privacidade {
  padding: 36px;
  border-radius: 20px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent-soft) 50%, var(--surface)), var(--surface));
  border: 1px solid var(--accent-border);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: center;
  box-shadow: var(--shadow-md);
}

.priv-ico {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: var(--accent);
  color: #ffffff;
  display: grid;
  place-items: center;
}

.priv-ico svg {
  width: 38px;
  height: 38px;
}

.priv-texto h3 {
  font-size: 22px;
  letter-spacing: -.02em;
  font-weight: 700;
}

.priv-texto p {
  margin-top: 6px;
  color: var(--text-dim);
  font-size: var(--fs-md);
  line-height: 1.6;
}

/* ── FAQ / Instruções de Instalação ── */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  max-width: 1040px;
  margin: 0 auto;
}

.faq-item {
  padding: 24px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.faq-item h4 {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.faq-item p {
  font-size: var(--fs-sm);
  color: var(--text-dim);
  line-height: 1.6;
}

/* ── Rodapé ── */
.rodape {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  font-size: var(--fs-sm);
  color: var(--text-mut);
  background: var(--surface);
  margin-top: auto;
}

.rodape-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.rodape-marca {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-dim);
}

.rodape-marca b {
  color: var(--text);
}

.rodape-links {
  display: flex;
  gap: 20px;
}

.rodape-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 600;
  transition: color .2s;
}

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

/* ── Responsividade ── */
@media (max-width: 900px) {
  .grid-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .destaque-privacidade {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }
}

@media (max-width: 760px) {
  .nav {
    display: none;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .download-box {
    padding: 24px 20px;
  }
}

@media (max-width: 580px) {
  .grid-cards {
    grid-template-columns: 1fr;
  }
  .download-topo {
    flex-direction: column;
    align-items: flex-start;
  }
  .download-opcoes-extras {
    flex-direction: column;
    align-items: flex-start;
  }
  .rodape-wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}