/* SIGAERO 145 — landing page
   Tokens alinhados à identidade SIGAERO (sigaero.com.br), com o âmbar
   como acento próprio do produto de manutenção. */
:root {
  --navy-950: #06182a;
  --navy-900: #0a223a;
  --navy-800: #103653;
  --blue-700: #125da2;
  --blue-600: #1676c4;
  --blue-500: #2c8bdd;
  --sky-300: #9fd2f7;
  --slate-50: #f5f8fa;
  --slate-100: #eaf0f4;
  --slate-200: #dbe4ea;
  --slate-300: #c4d0d9;
  --slate-600: #556879;
  --slate-700: #34495b;
  --white: #fff;
  --amber: #ffbf5b;
  --amber-soft: #ffd58e;
  --amber-ink: #8a5a00;
  --shadow: 0 24px 70px rgba(4, 25, 43, .16);
  --font-display: Georgia, "Times New Roman", serif;
  --font-ui: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", "DejaVu Sans Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; background: var(--white); color: var(--navy-950); font-family: var(--font-ui); line-height: 1.5; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { text-wrap: balance; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; border-radius: 4px; }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; top: 10px; left: 10px; transform: translateY(-150%); padding: 10px 14px; border-radius: 8px; background: var(--white); color: var(--navy-950); font-weight: 800; }
.skip-link:focus { transform: translateY(0); }
.code { color: var(--blue-700); font: 800 .68rem var(--font-mono); letter-spacing: .13em; text-transform: uppercase; }

/* Header */
.site-header { position: fixed; z-index: 50; inset: 0 0 auto; border-bottom: 1px solid rgba(255,255,255,.12); background: rgba(6,24,42,.84); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: background .2s ease, box-shadow .2s ease; }
.site-header.is-scrolled { background: rgba(6,24,42,.97); box-shadow: 0 10px 34px rgba(0,0,0,.18); }
.header-inner { display: flex; min-height: 76px; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--white); }
.brand img { width: 124px; }
.brand-tag { padding-left: 12px; border-left: 1px solid rgba(255,255,255,.3); color: var(--amber); font: 700 1.3rem/1 var(--font-display); letter-spacing: -.02em; }
.main-nav { display: flex; align-items: center; gap: 27px; color: rgba(255,255,255,.8); font-size: .86rem; font-weight: 700; }
.main-nav a { text-decoration: none; transition: color .2s ease; }
.main-nav a:hover { color: var(--white); }
.main-nav .nav-cta { margin-left: 4px; border: 1px solid rgba(255,255,255,.34); border-radius: 9px; padding: 11px 15px; color: var(--white); }
.main-nav .nav-cta:hover { border-color: var(--white); background: var(--white); color: var(--navy-950); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.22); border-radius: 9px; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; width: 21px; height: 2px; margin: 5px auto; background: var(--white); transition: transform .2s ease, opacity .2s ease; }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 150px 0 0; background: radial-gradient(circle at 78% 30%, rgba(44,139,221,.28), transparent 32%), linear-gradient(137deg, var(--navy-950), #0b2f4d 64%, #0f4871); color: var(--white); }
.hero-grid { position: absolute; inset: 0; opacity: .18; background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 44px 44px; mask-image: linear-gradient(to bottom, black, transparent 85%); -webkit-mask-image: linear-gradient(to bottom, black, transparent 85%); }
.hero-layout { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 64px; min-height: 560px; padding-bottom: 80px; }
.status-badge { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 26px; border: 1px solid rgba(255,191,91,.45); border-radius: 999px; padding: 7px 13px 7px 11px; color: var(--amber-soft); font-size: .7rem; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 4px rgba(255,191,91,.16); }
.hero h1 { margin: 0; font: 700 clamp(3.2rem, 6.4vw, 5.6rem)/.98 var(--font-display); letter-spacing: -.045em; }
.hero-lead { max-width: 600px; margin: 26px 0 0; color: #e4edf4; font-size: clamp(1.1rem, 1.7vw, 1.35rem); line-height: 1.55; }
.hero-lead strong { color: var(--white); }
.hero-sub { max-width: 580px; margin: 16px 0 0; color: #b9cad7; font-size: 1rem; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-note { max-width: 540px; margin: 22px 0 0; color: #8facbf; font-size: .78rem; line-height: 1.6; }

/* Buttons */
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 9px; padding: 0 20px; text-decoration: none; font-size: .9rem; font-weight: 800; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--blue-500); color: var(--white); box-shadow: 0 14px 34px rgba(22,118,196,.3); }
.button-primary:hover { background: #3b99e7; }
.button-secondary { border-color: rgba(255,255,255,.28); background: rgba(255,255,255,.07); color: var(--white); }
.button-secondary:hover { border-color: rgba(255,255,255,.6); background: rgba(255,255,255,.12); }

/* Data plate — composição gráfica inspirada nas placas de identificação aeronáuticas */
.data-plate { position: relative; justify-self: end; width: min(440px, 100%); padding: 30px 34px 26px; border: 1px solid rgba(255,255,255,.55); border-radius: 14px; background: linear-gradient(160deg, #f4f7f9 0%, #e1e8ee 55%, #d4dde4 100%); color: var(--navy-900); box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 40px 100px rgba(0,0,0,.38); }
.data-plate::before { content: ""; position: absolute; inset: 9px; border: 1px solid rgba(16,54,83,.18); border-radius: 8px; pointer-events: none; }
.rivet { position: absolute; width: 9px; height: 9px; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #fff, #9aabb8 70%); box-shadow: 0 1px 1px rgba(0,0,0,.25); }
.rivet-tl { top: 15px; left: 15px; } .rivet-tr { top: 15px; right: 15px; }
.rivet-bl { bottom: 15px; left: 15px; } .rivet-br { bottom: 15px; right: 15px; }
.plate-head { display: flex; justify-content: space-between; gap: 12px; padding: 4px 6px 14px; border-bottom: 2px solid var(--navy-900); font: 800 .68rem var(--font-mono); letter-spacing: .16em; text-transform: uppercase; }
.plate-head span:last-child { color: var(--slate-600); }
.plate-rows { margin: 0; padding: 6px 6px 0; }
.plate-rows div { display: grid; grid-template-columns: 110px 1fr; gap: 14px; align-items: baseline; padding: 12px 0; border-bottom: 1px dashed rgba(16,54,83,.25); }
.plate-rows dt { color: var(--slate-600); font: 700 .64rem var(--font-mono); letter-spacing: .12em; text-transform: uppercase; }
.plate-rows dd { margin: 0; font-size: .92rem; font-weight: 750; }
.plate-rows .plate-status { justify-self: start; border-radius: 5px; padding: 3px 8px; background: #fde7bf; color: var(--amber-ink); font-size: .8rem; }
.plate-foot { margin: 16px 6px 2px; color: var(--slate-700); font: 700 .72rem var(--font-mono); letter-spacing: .04em; }
.plate-foot span { color: var(--slate-600); font-weight: 500; }

.hero-strip { position: relative; display: flex; min-height: 76px; align-items: center; justify-content: center; flex-wrap: wrap; gap: 12px 30px; border-top: 1px solid rgba(255,255,255,.13); color: #b8cbd9; }
.hero-strip span { font-size: .68rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.hero-strip strong { color: var(--white); font-size: .78rem; font-weight: 700; }

/* Sections */
.section { padding: 112px 0; }
.section-light { background: var(--white); }
.section-slate { background: var(--slate-50); }
.section-dark { background: linear-gradient(135deg, var(--navy-950), #0c2c48); color: var(--white); }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; color: var(--sky-300); font-size: .7rem; font-weight: 900; letter-spacing: .17em; text-transform: uppercase; }
.eyebrow span { width: 25px; height: 2px; background: currentColor; }
.eyebrow.dark { color: var(--blue-700); }
.eyebrow.light { color: #cfe6f8; }
.section h2, .contact-card h2 { margin: 0; font: 700 clamp(2.1rem, 3.8vw, 3.4rem)/1.08 var(--font-display); letter-spacing: -.035em; }

.split-heading { display: grid; grid-template-columns: 1.1fr .8fr; align-items: end; gap: 80px; }
.split-heading > p { margin: 0 0 5px; color: var(--slate-600); line-height: 1.75; }
.grid-caption { margin: 72px 0 14px; color: var(--slate-600); font: 700 .7rem var(--font-mono); letter-spacing: .12em; text-transform: uppercase; }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--slate-300); border-radius: 14px; overflow: hidden; }
.principle-grid article { padding: 30px; border-right: 1px solid var(--slate-300); }
.principle-grid article:last-child { border-right: 0; }
.principle-grid h3 { margin: 40px 0 8px; font: 700 1.45rem var(--font-display); }
.principle-grid p { margin: 0; color: var(--slate-600); font-size: .9rem; line-height: 1.65; }

/* Ecosystem */
.ecosystem-layout { display: grid; grid-template-columns: .95fr 1.05fr; gap: 80px; align-items: center; }
.ecosystem-copy > p:not(.eyebrow) { max-width: 520px; margin: 18px 0 0; color: var(--slate-600); line-height: 1.75; }
.text-link { display: inline-flex; gap: 6px; margin-top: 26px; color: var(--blue-700); font-size: .86rem; font-weight: 800; text-underline-offset: 4px; }
.text-link:hover { color: var(--blue-600); }
.ecosystem-map { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 0; }
.eco-node { display: grid; gap: 8px; min-height: 170px; align-content: center; padding: 26px; border: 1px solid var(--slate-200); border-radius: 14px; background: var(--white); box-shadow: 0 12px 34px rgba(4,25,43,.06); }
.eco-node strong { font: 700 1.25rem/1.2 var(--font-display); }
.eco-node small { color: var(--slate-600); font-size: .78rem; font-weight: 600; }
.eco-node-145 { border-color: rgba(255,191,91,.7); box-shadow: 0 12px 34px rgba(4,25,43,.06), inset 0 3px 0 var(--amber); }
.eco-node-145 .code { color: var(--amber-ink); }
.eco-link { display: grid; justify-items: center; gap: 8px; width: 120px; padding: 0 8px; }
.eco-line { width: 100%; height: 0; border-top: 2px dashed var(--slate-300); }
.eco-label { color: var(--slate-600); font: 700 .58rem/1.4 var(--font-mono); letter-spacing: .1em; text-align: center; text-transform: uppercase; }

/* Status */
.status-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; }
.status-heading > p:not(.eyebrow) { max-width: 520px; margin: 20px 0 0; color: #b9cad7; line-height: 1.75; }
.status-rail { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.16); }
.status-rail li { display: grid; grid-template-columns: 105px 1fr; gap: 28px; padding: 28px 0; border-bottom: 1px solid rgba(255,255,255,.16); }
.status-rail .code { color: var(--sky-300); padding-top: 5px; }
.status-rail li.is-current .code { color: var(--amber); }
.status-rail h3 { margin: 0 0 7px; font: 700 1.35rem var(--font-display); }
.status-rail p { margin: 0; color: #b9cad7; font-size: .9rem; line-height: 1.65; }

/* Contact */
.contact-section { padding: 96px 0; background: var(--white); }
.contact-card { display: grid; grid-template-columns: 1fr .8fr; gap: 80px; align-items: center; padding: 58px; border-radius: 20px; background: var(--blue-700); color: var(--white); box-shadow: 0 25px 60px rgba(18,93,162,.22); }
.contact-card > div > p:not(.eyebrow) { max-width: 520px; margin: 18px 0 0; color: #dbeaf6; line-height: 1.65; }
.contact-actions { display: grid; gap: 6px; }
.contact-link { display: grid; gap: 3px; border-bottom: 1px solid rgba(255,255,255,.24); padding: 14px 4px; text-decoration: none; transition: border-color .2s ease, padding .2s ease; }
.contact-link:hover { border-color: var(--white); padding-left: 8px; }
.contact-link span { color: #c7e3f7; font-size: .66rem; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }
.contact-link strong { font-size: 1rem; word-break: break-word; }

/* Footer */
.site-footer { padding: 58px 0; background: var(--navy-950); color: #a9becc; }
.footer-layout { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 55px; align-items: end; }
.brand-footer img { width: 104px; }
.brand-footer .brand-tag { font-size: 1.1rem; }
.footer-brand p { max-width: 360px; margin: 14px 0 0; font-size: .8rem; line-height: 1.55; }
.site-footer nav, .footer-meta { display: flex; flex-wrap: wrap; gap: 13px 20px; font-size: .8rem; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--white); text-decoration: underline; text-underline-offset: 4px; }

/* Tablet */
@media (max-width: 980px) {
  .menu-toggle { display: block; }
  .main-nav { position: absolute; top: calc(100% + 1px); right: 20px; left: 20px; display: none; align-items: stretch; gap: 0; padding: 9px; border: 1px solid rgba(255,255,255,.13); border-radius: 12px; background: var(--navy-950); box-shadow: var(--shadow); }
  .main-nav.is-open { display: grid; }
  .main-nav a { padding: 12px; }
  .main-nav .nav-cta { margin: 5px 0 0; text-align: center; }
  .menu-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.is-open span:nth-child(2) { opacity: 0; }
  .menu-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero-layout { grid-template-columns: 1fr; gap: 52px; min-height: 0; padding-bottom: 64px; }
  .data-plate { justify-self: start; }
  .split-heading, .ecosystem-layout, .status-layout, .contact-card { grid-template-columns: 1fr; gap: 40px; }
  .footer-layout { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* Mobile */
@media (max-width: 680px) {
  html { scroll-padding-top: 72px; }
  .container { width: calc(100% - 32px); }
  .header-inner { min-height: 68px; }
  .brand img { width: 108px; }
  .brand-tag { font-size: 1.15rem; padding-left: 10px; }
  .hero { padding-top: 116px; }
  .hero h1 { font-size: clamp(2.7rem, 13vw, 3.6rem); }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .data-plate { padding: 26px 22px 22px; }
  .plate-rows div { grid-template-columns: 92px 1fr; gap: 10px; }
  .hero-strip { gap: 8px 18px; padding: 22px 0; }
  .hero-strip span { width: 100%; text-align: center; }
  .section { padding: 76px 0; }
  .grid-caption { margin-top: 48px; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle-grid article { border-right: 0; border-bottom: 1px solid var(--slate-300); padding: 26px; }
  .principle-grid article:last-child { border-bottom: 0; }
  .principle-grid h3 { margin-top: 20px; }
  .ecosystem-map { grid-template-columns: 1fr; }
  .eco-node { min-height: 0; }
  .eco-link { width: auto; padding: 12px 0; }
  .eco-line { width: 0; height: 22px; border-top: 0; border-left: 2px dashed var(--slate-300); }
  .status-rail li { grid-template-columns: 78px 1fr; gap: 14px; }
  .contact-section { padding: 64px 0; }
  .contact-card { padding: 34px 24px; }
  .footer-layout { grid-template-columns: 1fr; gap: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}