/* ==========================================================================
   SKYTORM — estilo base
   Fontes: Space Grotesk e Spline Sans Mono são substitutos temporários de
   Saans e Saans SemiMono. Para trocar, basta alterar --font-display e
   --font-mono e carregar os arquivos .woff2 licenciados em /assets/fonts.
   ========================================================================== */

:root {
  /* Cores oficiais da marca */
  --c-petroleo: #16232B;
  --c-laranja: #DE5C30;
  --c-branco: #F0F0F0;
  --c-cinza: #838892;
  --c-cinza-claro: #C4C5C7;

  /* Derivadas (apenas profundidade, sem novas cores) */
  --c-profundo: #0E181D;
  --c-linha: rgba(240, 240, 240, 0.14);
  --c-linha-clara: rgba(22, 35, 43, 0.16);

  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Spline Sans Mono", ui-monospace, "SFMono-Regular", monospace;

  --step--1: clamp(0.78rem, 0.75rem + 0.15vw, 0.86rem);
  --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.08rem);
  --step-1: clamp(1.18rem, 1.08rem + 0.5vw, 1.4rem);
  --step-2: clamp(1.5rem, 1.28rem + 1.1vw, 2.1rem);
  --step-3: clamp(2rem, 1.55rem + 2.2vw, 3.4rem);
  --step-4: clamp(2.8rem, 1.9rem + 4.5vw, 6rem);

  --space: clamp(1.25rem, 1rem + 1.2vw, 2rem);
  --section-y: clamp(5rem, 3.5rem + 7vw, 10rem);
  --container: 1360px;
  --gutter: clamp(1.5rem, 1rem + 3vw, 5rem);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 6rem; }

body {
  margin: 0;
  background: var(--c-petroleo);
  color: var(--c-branco);
  font-family: var(--font-display);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { font-weight: 700; line-height: 1.05; letter-spacing: -0.02em; margin: 0; }
p { margin: 0 0 1.1em; max-width: 62ch; }
img { max-width: 100%; height: auto; display: block; }

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--c-laranja);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--c-laranja);
  color: var(--c-branco);
  padding: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  z-index: 200;
}
.skip-link:focus { left: 0; }

/* ---------- Cabeçalho ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-stuck {
  background: rgba(14, 24, 29, 0.92);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--c-linha);
}

.header-inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.6rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  transition: padding 0.4s var(--ease);
}
.site-header.is-stuck .header-inner { padding-block: 1rem; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--c-branco);
}
.brand-mark { width: auto; height: 30px; color: var(--c-laranja); }
.brand-name {
  font-weight: 700;
  font-size: 1.28rem;
  letter-spacing: 0.14em;
}

.site-nav { display: flex; align-items: center; gap: 2.5rem; }
.site-nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav ul a {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-decoration: none;
  color: var(--c-cinza-claro);
  padding-block: 0.35rem;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.site-nav ul a:hover { color: var(--c-branco); }
.site-nav ul a.is-active { color: var(--c-branco); border-bottom-color: var(--c-laranja); }

.nav-cta {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-decoration: none;
  padding: 0.7rem 1.3rem;
  border: 1px solid var(--c-laranja);
  color: var(--c-branco);
  transition: background 0.25s var(--ease);
}
.nav-cta:hover { background: var(--c-laranja); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  background: none;
  border: 0;
  color: var(--c-branco);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  cursor: pointer;
  padding: 0.4rem 0;
}
.nav-toggle-bars { display: grid; gap: 5px; width: 22px; }
.nav-toggle-bars i {
  display: block;
  height: 2px;
  background: var(--c-laranja);
  transition: transform 0.3s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:first-child { transform: translateY(3.5px) rotate(20deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:last-child { transform: translateY(-3.5px) rotate(-20deg); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 9rem var(--gutter) 3rem;
  max-width: var(--container);
  margin-inline: auto;
  overflow: hidden;
}

.hero-graphic {
  position: absolute;
  inset: 0 -6% 0 auto;
  width: min(46%, 620px);
  color: var(--c-laranja);
  opacity: 0.85;
  pointer-events: none;
}
.hero-graphic svg { width: 100%; height: 100%; }
.hero-graphic .draw path {
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
  animation: trace 1.5s var(--ease) forwards;
}
.hero-graphic .draw path:nth-child(2) { animation-delay: 0.12s; }
.hero-graphic .draw path:nth-child(3) { animation-delay: 0.24s; }
.hero-graphic .draw path:nth-child(4) { animation-delay: 0.36s; }
.hero-graphic .draw path:nth-child(5) { animation-delay: 0.48s; }

@keyframes trace { to { stroke-dashoffset: 0; } }

.hero-inner { position: relative; z-index: 1; max-width: 46rem; }

.hero-kicker {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--c-cinza);
  letter-spacing: 0.05em;
  margin-bottom: 1.6rem;
  padding-left: 1.4rem;
  position: relative;
}
.hero-kicker::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 0.8rem;
  height: 1px;
  background: var(--c-laranja);
}

.hero-title {
  font-size: var(--step-4);
  letter-spacing: -0.035em;
  margin-bottom: 2rem;
}
.hero-title em { font-style: normal; color: var(--c-laranja); }

.hero-lead {
  font-size: var(--step-1);
  color: var(--c-cinza-claro);
  line-height: 1.5;
  max-width: 40rem;
  margin-bottom: 2.6rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.hero-foot {
  position: relative;
  z-index: 1;
  margin: 4rem 0 0;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--c-cinza);
  border-top: 1px solid var(--c-linha);
  padding-top: 1.2rem;
}

/* ---------- Botões e links ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-decoration: none;
  padding: 1rem 1.9rem;
  border: 1px solid transparent;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.btn-primary { background: var(--c-laranja); color: var(--c-branco); }
.btn-primary:hover { background: #c74f27; }
.btn-ghost { border-color: var(--c-linha); color: var(--c-branco); }
.btn-ghost:hover { border-color: var(--c-branco); }

.link-arrow {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-decoration: none;
  color: var(--c-laranja);
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.2rem;
  transition: opacity 0.25s var(--ease);
}
.link-arrow:hover { opacity: 0.7; }

/* ---------- Seções ---------- */

.section { padding-block: var(--section-y); }
.section-dark { background: var(--c-petroleo); }
.section-deep { background: var(--c-profundo); }

.section-light {
  background: var(--c-branco);
  color: var(--c-petroleo);
}
.section-light .link-arrow { color: var(--c-laranja); }

.grid {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space);
}
.col-heading { grid-column: 1 / span 5; }
.col-heading h2 { font-size: var(--step-3); }
.col-heading-note {
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--c-cinza);
  line-height: 1.7;
}
.col-body { grid-column: 7 / span 6; color: var(--c-cinza-claro); }
.col-body .lead { font-size: var(--step-1); color: var(--c-branco); line-height: 1.5; }

/* Lacunas do mercado */
.gaps {
  max-width: var(--container);
  margin: clamp(4rem, 8vw, 7rem) auto 0;
  padding-inline: var(--gutter);
}
.gaps-head { border-top: 1px solid var(--c-linha); padding-top: 2rem; margin-bottom: 2.5rem; }
.gaps-head h3 { font-size: var(--step-2); margin-bottom: 1rem; }
.gaps-head p { color: var(--c-cinza); max-width: 52ch; margin: 0; }

.gaps-list { list-style: none; margin: 0; padding: 0; }
.gaps-list li {
  border-top: 1px solid var(--c-linha);
  padding: 1.6rem 0 1.6rem 0;
  font-size: var(--step-1);
  color: var(--c-cinza-claro);
  display: grid;
  grid-template-columns: minmax(0, 18rem) 1fr;
  gap: 1rem 2rem;
  transition: color 0.3s var(--ease);
}
.gaps-list li:last-child { border-bottom: 1px solid var(--c-linha); }
.gaps-list li span { color: var(--c-branco); font-weight: 500; }
.gaps-list li:hover { color: var(--c-branco); }

/* Seções de oferta */
.section-head {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  margin-bottom: clamp(3rem, 6vw, 5.5rem);
}
.section-head h2 { font-size: var(--step-3); max-width: 20ch; margin-bottom: 1.2rem; }
.section-head p { color: #4a5a63; max-width: 56ch; }

.offer {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space);
  align-items: center;
  padding-block: clamp(2.5rem, 5vw, 4.5rem);
  border-top: 1px solid var(--c-linha-clara);
}
.offer-text { grid-column: 1 / span 5; }
.offer-media { grid-column: 7 / span 6; }
.offer-reverse .offer-text { grid-column: 8 / span 5; }
.offer-reverse .offer-media { grid-column: 1 / span 6; grid-row: 1; }

.offer h3 { font-size: var(--step-2); margin-bottom: 1.2rem; }
.offer p { color: #4a5a63; }

.media-slot {
  aspect-ratio: 4 / 3;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 0.5rem;
  border: 1px dashed rgba(22, 35, 43, 0.3);
  background: rgba(22, 35, 43, 0.04);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: #6c7a82;
  text-align: center;
  padding: 1rem;
}
.media-slot span:first-child { color: var(--c-laranja); }

/* Princípios */
.principles { display: grid; gap: 2.5rem; }
.principle { border-top: 1px solid var(--c-linha); padding-top: 1.5rem; }
.principle h3 { font-size: var(--step-1); color: var(--c-laranja); margin-bottom: 0.7rem; }
.principle p { margin: 0; }

/* Declaração */
.statement {
  max-width: var(--container);
  margin: 0 auto clamp(4rem, 8vw, 7rem);
  padding-inline: var(--gutter);
}
.statement p {
  font-size: var(--step-3);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  max-width: 24ch;
  margin: 0;
}
.statement em { font-style: normal; color: var(--c-laranja); }

/* Atributos */
.traits {
  max-width: var(--container);
  margin: clamp(4rem, 8vw, 6rem) auto 0;
  padding-inline: var(--gutter);
}
.traits > div {
  display: grid;
  grid-template-columns: minmax(0, 14rem) 1fr;
  gap: 1rem 2rem;
  border-top: 1px solid var(--c-linha);
  padding-block: 1.4rem;
}
.traits dt { font-weight: 700; font-size: var(--step-1); }
.traits dd { margin: 0; color: var(--c-cinza); max-width: 58ch; }

/* Contato */
.section-contact { background: var(--c-laranja); color: var(--c-branco); }
.contact-inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.contact-inner h2 { font-size: var(--step-3); margin-bottom: 1.5rem; }
.contact-lead { font-size: var(--step-1); max-width: 44rem; line-height: 1.5; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin: 2.5rem 0 4rem; }
.section-contact .btn-primary { background: var(--c-petroleo); }
.section-contact .btn-primary:hover { background: var(--c-profundo); }
.section-contact .btn-ghost { border-color: rgba(240, 240, 240, 0.45); }
.section-contact .btn-ghost:hover { border-color: var(--c-branco); }

.contact-data {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  border-top: 1px solid rgba(240, 240, 240, 0.35);
  padding-top: 2rem;
}
.contact-data li {
  display: grid;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  word-break: break-word;
}
.contact-data span { color: rgba(240, 240, 240, 0.7); }
.contact-data a { text-decoration: none; border-bottom: 1px solid rgba(240, 240, 240, 0.4); padding-bottom: 0.15rem; }
.contact-data a:hover { border-bottom-color: var(--c-branco); }

/* Rodapé */
.site-footer { background: var(--c-profundo); padding-block: 4rem 3rem; }
.footer-inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2.5rem;
  align-items: start;
}
.footer-brand { display: flex; align-items: center; gap: 1rem; }
.footer-brand .brand-mark { height: 34px; color: var(--c-laranja); }
.footer-brand p { margin: 0; font-size: var(--step--1); color: var(--c-cinza-claro); font-family: var(--font-mono); }
.footer-nav { display: grid; gap: 0.6rem; }
.footer-nav a {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--c-cinza);
  text-decoration: none;
}
.footer-nav a:hover { color: var(--c-branco); }
.footer-legal {
  grid-column: 1 / -1;
  border-top: 1px solid var(--c-linha);
  padding-top: 1.5rem;
  margin: 0;
  max-width: none;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--c-cinza);
  line-height: 1.8;
}

/* Reveal no scroll */
.reveal { opacity: 0; transform: translateY(18px); }
.reveal.is-visible {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero-graphic .draw path { stroke-dashoffset: 0; }
}