:root {
  --bg: #070512;
  --surface: #0e0b22;
  --surface-2: #14102f;
  --line: rgba(255, 255, 255, .08);
  --violeta: #8b3fd9;
  --violeta-escuro: #631ca3;
  --ciano: #22e1f2;
  --magenta: #ff2d95;
  --verde: #34d399;
  --texto: #f4f3fb;
  --mutado: #aaa6c8;
  --raio: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0; background: var(--bg); color: var(--texto);
  font-family: 'Manrope', 'Segoe UI', Roboto, Arial, sans-serif;
  line-height: 1.7; -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, .logo { font-family: 'Sora', 'Segoe UI', Arial, sans-serif; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--ciano); outline-offset: 3px; }
.container { width: 90%; max-width: 1180px; margin: 0 auto; }

/* Cabeçalho */
header {
  position: fixed; inset: 0 0 auto 0; z-index: 1000;
  background: rgba(7, 5, 18, .8); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
nav { display: flex; justify-content: space-between; align-items: center; padding: 16px 0; gap: 20px; }
.logo { color: #fff; text-decoration: none; font-weight: 800; font-size: 24px; letter-spacing: .5px; display: flex; align-items: baseline; gap: 10px; }
.logo span { color: var(--ciano); }
.logo small { font-family: 'Manrope', sans-serif; font-weight: 500; font-size: 12px; color: var(--mutado); letter-spacing: 0; }
nav ul { list-style: none; display: flex; gap: 6px; margin: 0; padding: 0; }
nav ul a {
  display: block; padding: 8px 16px; border-radius: 8px;
  color: var(--mutado); text-decoration: none; font-weight: 600; font-size: 15px;
  transition: color .2s, background .2s;
}
nav ul a:hover { color: #fff; background: rgba(255, 255, 255, .05); }
nav ul a[aria-current="page"] { color: #fff; background: rgba(139, 63, 217, .22); }

/* Banner principal */
.hero {
  position: relative;
  padding: 210px 0 190px;
  background:
    linear-gradient(90deg, var(--bg) 0%, rgba(7, 5, 18, .88) 32%, rgba(7, 5, 18, .25) 70%, rgba(7, 5, 18, .1) 100%),
    linear-gradient(0deg, var(--bg) 0%, transparent 35%),
    url('imagens/banner-tkti.png') no-repeat 70% center / cover;
}
.hero-content { max-width: 620px; }
.hero h2 { font-size: clamp(38px, 6vw, 64px); line-height: 1.05; font-weight: 800; letter-spacing: -1.5px; margin: 0 0 22px; }
.hero h2 span { color: var(--ciano); }
.hero p { font-size: 19px; color: #c9c6e2; margin: 0 0 36px; max-width: 540px; }
.hero-acoes { display: flex; flex-wrap: wrap; gap: 14px; }

.btn {
  display: inline-block; padding: 14px 32px; border-radius: 10px;
  background: var(--ciano); color: #04020d; font-weight: 800; font-size: 15px;
  text-decoration: none; transition: transform .2s, box-shadow .2s, background .2s;
  box-shadow: 0 6px 24px rgba(34, 225, 242, .25);
}
.btn:hover { transform: translateY(-2px); background: #fff; box-shadow: 0 10px 28px rgba(34, 225, 242, .4); }
.btn-sec { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, .25); box-shadow: none; }
.btn-sec:hover { background: rgba(255, 255, 255, .08); box-shadow: none; }

/* Páginas internas */
.page-title {
  padding: 150px 0 70px; text-align: center;
  background:
    linear-gradient(180deg, rgba(7, 5, 18, .55) 0%, rgba(7, 5, 18, .85) 70%, var(--bg) 100%),
    url('imagens/banner-tkti.png') no-repeat center / cover;
}
.page-title h2 { font-size: clamp(30px, 5vw, 46px); font-weight: 800; letter-spacing: -1px; margin: 0; }
.page-title h2 span { color: var(--ciano); }
.page-title p { color: #c9c6e2; font-size: 18px; margin: 12px auto 0; max-width: 620px; }

/* Cards de entrada (index) */
.cards-topo-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px;
  margin-top: -90px; position: relative; z-index: 2; padding-bottom: 80px;
}
.card-clicavel {
  display: flex; flex-direction: column; padding: 32px 30px; border-radius: var(--raio);
  background: var(--surface); border: 1px solid var(--line); border-top: 2px solid var(--violeta);
  color: var(--texto); text-decoration: none; transition: border-color .25s, transform .25s;
}
.card-clicavel:hover { border-color: var(--ciano); transform: translateY(-4px); }
.card-clicavel h3 { margin: 0 0 10px; font-size: 20px; font-weight: 700; }
.card-clicavel p { margin: 0; font-size: 15px; color: var(--mutado); flex: 1; }
.seta-link { margin-top: 22px; color: var(--ciano); font-weight: 700; font-size: 14px; }

/* Seções detalhadas (index): título à esquerda, texto à direita */
.secao-detalhe {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.8fr); gap: 0 64px; align-items: start;
  padding: 64px 0; border-top: 1px solid var(--line);
}
.secao-detalhe h2 {
  grid-column: 1; grid-row: 1 / span 6; position: sticky; top: 110px;
  margin: 0; font-size: 28px; line-height: 1.25; font-weight: 700; letter-spacing: -.5px;
}
.secao-detalhe > :not(h2) { grid-column: 2; }
.secao-detalhe p { margin: 0 0 20px; font-size: 16.5px; color: #c9c6e2; }
.lista-recursos { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 10px; }
.lista-recursos li {
  padding: 14px 18px; border-radius: 10px; font-size: 15px; font-weight: 500;
  background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--violeta);
}

/* Cartões da página de especialidades */
.portfolio-section { padding: 30px 0 0; }
.detail-card {
  padding: 40px; margin-bottom: 24px; border-radius: var(--raio);
  background: var(--surface); border: 1px solid var(--line);
}
.detail-card h3 { margin: 0 0 14px; font-size: 24px; font-weight: 700; letter-spacing: -.3px; }
.detail-card p { color: #c9c6e2; margin: 0; }
.impacto-box {
  margin: 24px 0 8px; padding: 20px 24px; border-radius: 10px;
  background: rgba(52, 211, 153, .06); border: 1px solid rgba(52, 211, 153, .2);
}
.impacto-box h4 { margin: 0 0 6px; font-size: 15px; color: var(--verde); font-weight: 700; }
.impacto-box p { color: #e3e1f2; font-size: 15px; }
.badge {
  display: inline-block; margin: 14px 8px 0 0; padding: 5px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 600; color: var(--ciano);
  background: rgba(34, 225, 242, .08); border: 1px solid rgba(34, 225, 242, .22);
}
.cta-diagnostico {
  margin-top: 56px; padding: 56px 32px; text-align: center; border-radius: 20px;
  background: linear-gradient(135deg, rgba(99, 28, 163, .35) 0%, var(--surface) 80%);
  border: 1px solid var(--line);
}
.cta-diagnostico h3 { font-size: 30px; font-weight: 800; margin: 0 0 12px; letter-spacing: -.5px; }
.cta-diagnostico p { color: var(--mutado); font-size: 17px; max-width: 640px; margin: 0 auto 28px; }

/* Contato */
.contact-section { padding: 30px 0 0; }
.contact-card {
  max-width: 640px; margin: 0 auto; padding: 44px 40px; text-align: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: 20px;
}
.contact-card h3 { font-size: 26px; font-weight: 800; margin: 0 0 12px; }
.contact-card > p { color: var(--mutado); margin: 0 0 32px; }
.contact-method {
  margin-top: 16px; padding: 20px; border-radius: 12px;
  background: var(--surface-2); border: 1px solid var(--line); transition: border-color .25s;
}
.contact-method:hover { border-color: var(--ciano); }
.contact-method strong { display: block; color: var(--mutado); font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.contact-method a { color: #fff; font-size: 19px; font-weight: 700; text-decoration: none; }
.contact-method a:hover { color: var(--ciano); }

footer { margin-top: 90px; padding: 36px 0; text-align: center; font-size: 14px; color: var(--mutado); background: #04030c; border-top: 1px solid var(--line); }
footer p { margin: 0; }

/* Chat */
#tkti-chat-widget { position: fixed; right: 22px; bottom: 22px; z-index: 9999; font-family: 'Manrope', sans-serif; }
#tkti-chat-btn {
  width: 58px; height: 58px; border: 0; border-radius: 50%; cursor: pointer; font-size: 24px;
  background: var(--ciano); color: #04020d; box-shadow: 0 6px 22px rgba(34, 225, 242, .35); transition: transform .2s;
}
#tkti-chat-btn:hover { transform: scale(1.07); }
#tkti-chat-box {
  display: none; position: absolute; right: 0; bottom: 74px; width: 340px; height: 440px; max-height: 70vh;
  flex-direction: column; overflow: hidden; background: var(--surface);
  border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 18px 50px rgba(0, 0, 0, .6);
}
#tkti-chat-box.aberto { display: flex; }
#tkti-chat-header { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; background: var(--violeta-escuro); font-weight: 700; }
#tkti-chat-close { background: none; border: 0; color: #fff; font-size: 22px; cursor: pointer; line-height: 1; }
#tkti-chat-messages { flex: 1; padding: 14px; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.tkti-msg { padding: 10px 14px; border-radius: 12px; max-width: 85%; line-height: 1.45; white-space: pre-wrap; overflow-wrap: anywhere; }
.tkti-msg.user { align-self: flex-end; background: #1d4ed8; }
.tkti-msg.bot { align-self: flex-start; background: rgba(255, 255, 255, .08); }
#tkti-chat-input-area { display: flex; gap: 8px; padding: 10px; border-top: 1px solid var(--line); background: #07050f; }
#tkti-chat-input { flex: 1; min-width: 0; padding: 10px 12px; color: #fff; background: rgba(255, 255, 255, .06); border: 1px solid var(--line); border-radius: 8px; font: inherit; }
#tkti-chat-send { padding: 0 16px; border: 0; border-radius: 8px; background: var(--ciano); color: #04020d; font-weight: 800; cursor: pointer; }

/* Responsivo */
@media (max-width: 820px) {
  nav { flex-direction: column; align-items: flex-start; gap: 8px; padding: 12px 0; }
  .logo small { display: none; }
  nav ul { width: 100%; overflow-x: auto; }
  nav ul a { padding: 6px 12px; white-space: nowrap; }
  .hero { padding: 170px 0 150px; background-position: 62% center; }
  .page-title { padding: 150px 0 50px; }
  .secao-detalhe { grid-template-columns: 1fr; padding: 44px 0; }
  .secao-detalhe h2 { position: static; grid-row: auto; margin-bottom: 20px; }
  .secao-detalhe > :not(h2) { grid-column: 1; }
  .detail-card, .contact-card { padding: 28px 22px; }
  #tkti-chat-box { width: calc(100vw - 44px); }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}