/* =========================================================
   VÉRTICE ENGENHARIA — STYLE.CSS
   Design: "blueprint" — pranchas técnicas, grid de projeto,
   linhas de cota e codificação de disciplinas (EST, GEO, GER...)
   ========================================================= */

/* ---------- 1. TOKENS ---------- */
:root {
  /* cor */
  --color-bg: #0E1620;
  --color-surface: #16212C;
  --color-surface-alt: #1C2A38;
  --color-accent: #C98A3E;      /* bronze/âmbar estrutural */
  --color-accent-dark: #9C6A2A;
  --color-accent-2: #5B8FB9;    /* azul de prancha técnica */
  --color-text: #E7E9EC;
  --color-text-dim: #9AA7B2;
  --color-border: rgba(231, 233, 236, 0.10);
  --color-success: #6FB98A;
  --color-error: #E0746B;

  /* tipografia */
  --font-display: "Big Shoulders Condensed", sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  /* layout */
  --container-width: 1180px;
  --radius: 4px;
  --transition: 200ms ease;
}

/* ---------- 2. RESET ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@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; scroll-behavior: auto !important; }
}

body {
  margin: 0;
  background-color: var(--color-bg);
  background-image:
    repeating-linear-gradient(0deg, rgba(91,143,185,0.05) 0px, rgba(91,143,185,0.05) 1px, transparent 1px, transparent 64px),
    repeating-linear-gradient(90deg, rgba(91,143,185,0.05) 0px, rgba(91,143,185,0.05) 1px, transparent 1px, transparent 64px);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 700; letter-spacing: 0.01em; line-height: 1.05; }
p { margin: 0 0 1rem; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 1rem; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 999;
  background: var(--color-accent); color: var(--color-bg);
  padding: 0.75rem 1.25rem; font-weight: 600;
}
.skip-link:focus { left: 0; }

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- 3. UTILITÁRIOS ---------- */
.eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--color-accent);
  margin: 0 0 1rem;
}

.sheet-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-2);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.6rem;
  margin: 0 0 1rem;
  display: inline-block;
}

.section { padding: 5rem 0; }
.section--alt { background-color: var(--color-surface); }
.section__head { max-width: 640px; margin-bottom: 2.75rem; }
.section__title { font-size: clamp(1.75rem, 1.2rem + 2vw, 2.5rem); margin-bottom: 0.85rem; }
.section__lead { color: var(--color-text-dim); font-size: 1.05rem; max-width: 620px; }

.section__grid { display: grid; gap: 2.5rem; }
@media (min-width: 900px) {
  .section__grid--about { grid-template-columns: 1.3fr 0.9fr; align-items: start; gap: 3.5rem; }
  .section__grid--contact { grid-template-columns: 1.2fr 0.8fr; gap: 3.5rem; }
}

/* Botões */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform var(--transition), background-color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn--accent { background-color: var(--color-accent); color: #1A1206; }
.btn--accent:hover { background-color: var(--color-accent-dark); transform: translateY(-1px); }
.btn--outline { border-color: var(--color-border); color: var(--color-text); }
.btn--outline:hover { border-color: var(--color-accent-2); color: var(--color-accent-2); }
.btn--small { padding: 0.6rem 1.1rem; font-size: 0.82rem; }
.btn--full { width: 100%; }

/* Moldura "prancha técnica" — elemento de assinatura do design */
.blueprint-frame {
  position: relative;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  padding: 1.5rem;
}
.blueprint-frame::before,
.blueprint-frame::after {
  content: "";
  position: absolute;
  width: 16px; height: 16px;
  border: 2px solid var(--color-accent);
  pointer-events: none;
}
.blueprint-frame::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.blueprint-frame::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

/* ---------- 4. HEADER ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background-color: rgba(14, 22, 32, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.9rem 1.25rem;
}
.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand__text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}
.brand__text--thin {
  display: block;
  font-weight: 600;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--color-text-dim);
  margin-top: -2px;
}

.main-nav__list { display: flex; gap: 1.75rem; list-style: none; }
.main-nav__list a {
  font-size: 0.92rem; color: var(--color-text-dim);
  transition: color var(--transition);
}
.main-nav__list a:hover, .main-nav__list a.is-active { color: var(--color-text); }

.header__cta { display: none; }

.nav-toggle {
  display: flex; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; background: none; border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.nav-toggle__bar {
  display: block; width: 18px; height: 2px; background-color: var(--color-text);
  margin: 0 auto; transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 899px) {
  .main-nav {
    position: fixed; inset: 64px 0 auto 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    max-height: 0; overflow: hidden;
    transition: max-height var(--transition);
  }
  .main-nav.is-open { max-height: 70vh; overflow-y: auto; }
  .main-nav__list { flex-direction: column; gap: 0; padding: 0.5rem 1.25rem 1.5rem; }
  .main-nav__list a { display: block; padding: 0.85rem 0; border-bottom: 1px solid var(--color-border); }
}
@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .header__cta { display: inline-flex; }
}

/* ---------- 5. HERO ---------- */
.hero { padding: 3.5rem 0 4.5rem; overflow: hidden; }
.hero__grid { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 980px) {
  .hero__grid { grid-template-columns: 1.05fr 0.95fr; gap: 3rem; }
}

.hero__title {
  font-size: clamp(2.1rem, 1.4rem + 3.4vw, 3.4rem);
  margin-bottom: 1.1rem;
}
.hero__lead {
  color: var(--color-text-dim);
  font-size: 1.08rem;
  max-width: 540px;
  margin-bottom: 1.75rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.75rem; }

.hero__stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1rem; max-width: 480px; margin: 0;
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}
.hero__stat dd { margin: 0; font-family: var(--font-mono); font-size: 1.5rem; font-weight: 600; color: var(--color-accent); }
.hero__stat-suffix { font-size: 1rem; color: var(--color-accent); }
.hero__stat-label { margin: 0.2rem 0 0; font-size: 0.8rem; color: var(--color-text-dim); }

.hero__visual { padding: 1.25rem; }
.hero__svg { width: 100%; height: auto; }
.hero__dim-label {
  font-family: var(--font-mono); font-size: 11px; fill: var(--color-accent);
}
.blueprint-frame__tag {
  position: absolute; bottom: 0.5rem; right: 1.5rem;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.05em;
  color: var(--color-text-dim);
}

/* ---------- 6. SOBRE ---------- */
.check-list { list-style: none; margin-top: 1.5rem; display: grid; gap: 0.75rem; }
.check-list li {
  position: relative; padding-left: 1.6rem; color: var(--color-text-dim); font-size: 0.96rem;
}
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 0.35rem;
  width: 9px; height: 9px; border: 2px solid var(--color-accent);
}

.about-card__kicker {
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--color-text-dim); margin-bottom: 0.75rem;
}
.about-card__quote {
  font-family: var(--font-display); font-size: 1.4rem; font-weight: 600;
  line-height: 1.3; color: var(--color-text);
}
.about-card__divider { height: 1px; background-color: var(--color-border); margin: 1.5rem 0; }
.about-card__list { list-style: none; display: grid; gap: 0.85rem; }
.about-card__list li { font-size: 0.92rem; color: var(--color-text-dim); }
.about-card__list span { display: block; font-family: var(--font-mono); font-size: 1.2rem; color: var(--color-accent); font-weight: 600; }

/* ---------- 7. SERVIÇOS ---------- */
.cards-grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .cards-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .cards-grid { grid-template-columns: repeat(3, 1fr); } }

.service-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}
.service-card:hover { border-color: var(--color-accent-2); transform: translateY(-3px); }
.service-card__code {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--color-text-dim);
  letter-spacing: 0.05em; margin-bottom: 1rem;
}
.service-card__icon {
  display: inline-flex; width: 42px; height: 42px;
  align-items: center; justify-content: center;
  border: 1px solid var(--color-border); border-radius: var(--radius);
  color: var(--color-accent); margin-bottom: 1.1rem;
}
.service-card__icon svg { width: 22px; height: 22px; }
.service-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.service-card p { color: var(--color-text-dim); font-size: 0.94rem; margin-bottom: 0; }

/* ---------- 8. PROCESSO (timeline) ---------- */
.timeline {
  list-style: none; display: grid; gap: 2rem;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .timeline { grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
}
.timeline__item {
  position: relative;
  border-top: 2px solid var(--color-accent);
  padding-top: 1.25rem;
}
.timeline__num {
  font-family: var(--font-mono); font-size: 0.85rem; color: var(--color-accent);
  display: block; margin-bottom: 0.5rem;
}
.timeline__item h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
.timeline__item p { color: var(--color-text-dim); font-size: 0.92rem; margin-bottom: 0; }

/* ---------- 9. PROJETOS ---------- */
.projects-grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .projects-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .projects-grid { grid-template-columns: repeat(4, 1fr); } }

.project-card { padding: 0.9rem; }
.project-card__thumb {
  aspect-ratio: 4 / 3; border-radius: 2px; margin-bottom: 1rem;
  background-size: cover; background-position: center;
}
.project-card__thumb--1 { background: linear-gradient(135deg, #1C2A38, #5B8FB9); }
.project-card__thumb--2 { background: linear-gradient(135deg, #1C2A38, #6FB98A); }
.project-card__thumb--3 { background: linear-gradient(135deg, #1C2A38, #C98A3E); }
.project-card__thumb--4 { background: linear-gradient(135deg, #1C2A38, #9AA7B2); }
.project-card__tag {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--color-accent);
  letter-spacing: 0.05em; margin-bottom: 0.4rem;
}
.project-card h3 { font-size: 1.05rem; margin-bottom: 0.3rem; }
.project-card__meta { font-size: 0.84rem; color: var(--color-text-dim); margin-bottom: 0; }

/* ---------- 10. DEPOIMENTOS ---------- */
.testimonial-grid { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .testimonial-grid { grid-template-columns: repeat(2, 1fr); } }
.testimonial-card {
  margin: 0; padding: 1.75rem;
  background-color: var(--color-surface);
  border-left: 3px solid var(--color-accent);
}
.testimonial-card p { font-size: 1.05rem; font-style: italic; color: var(--color-text); }
.testimonial-card footer { font-family: var(--font-mono); font-size: 0.84rem; color: var(--color-text-dim); }

/* ---------- 11. CTA BANNER ---------- */
.cta-banner {
  background: linear-gradient(120deg, var(--color-surface-alt), var(--color-bg));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 3.5rem 0;
}
.cta-banner__inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 1.5rem;
}
.cta-banner h2 { font-size: clamp(1.5rem, 1rem + 2vw, 2.1rem); max-width: 520px; }

/* ---------- 12. CONTATO ---------- */
.contact-form { display: grid; gap: 1.25rem; }
.form-row { display: grid; gap: 0.4rem; }
.form-row--split { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 540px) { .form-row--split { grid-template-columns: 1fr 1fr; } }

.contact-form label { font-size: 0.88rem; color: var(--color-text-dim); }
.contact-form input,
.contact-form select,
.contact-form textarea {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  padding: 0.75rem 0.9rem;
  width: 100%;
  transition: border-color var(--transition);
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--color-accent-2);
  outline: none;
}
.contact-form textarea { resize: vertical; min-height: 120px; }

.form-row.has-error input,
.form-row.has-error textarea { border-color: var(--color-error); }
.form-error { font-size: 0.8rem; color: var(--color-error); min-height: 1.1em; }
.form-feedback { font-size: 0.92rem; min-height: 1.2em; }
.form-feedback.is-success { color: var(--color-success); }
.form-feedback.is-error { color: var(--color-error); }

.contact-info { display: grid; gap: 1.25rem; align-content: start; }
.contact-info__card h3 { font-size: 1.1rem; margin-bottom: 1.1rem; }
.contact-info__card ul { list-style: none; display: grid; gap: 1rem; }
.contact-info__card li { display: grid; gap: 0.15rem; font-size: 0.92rem; }
.contact-info__card strong { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-text-dim); }
.contact-info__card a:hover { color: var(--color-accent-2); }

.social-links { display: flex; gap: 0.75rem; margin-top: 1.5rem; }
.social-links a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border: 1px solid var(--color-border); border-radius: var(--radius);
  color: var(--color-text-dim); transition: color var(--transition), border-color var(--transition);
}
.social-links a:hover { color: var(--color-accent); border-color: var(--color-accent); }

.map-frame { padding: 0; overflow: hidden; }
.map-frame iframe { width: 100%; height: 220px; border: 0; filter: grayscale(0.15) invert(0.92) contrast(0.9); }

/* ---------- 13. FOOTER ---------- */
.site-footer { background-color: var(--color-surface); border-top: 1px solid var(--color-border); padding-top: 3.5rem; }
.footer__grid {
  display: grid; gap: 2.5rem;
  grid-template-columns: 1fr; padding-bottom: 2.5rem;
}
@media (min-width: 768px) { .footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }

.footer__brand p { color: var(--color-text-dim); font-size: 0.92rem; margin-top: 0.85rem; max-width: 280px; }
.site-footer h3 { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-dim); margin-bottom: 1rem; font-weight: 600; }
.site-footer nav ul { list-style: none; display: grid; gap: 0.65rem; }
.site-footer nav a, .footer__contact a { font-size: 0.92rem; color: var(--color-text); }
.site-footer nav a:hover, .footer__contact a:hover { color: var(--color-accent); }
.footer__contact p { margin: 0 0 0.65rem; font-size: 0.92rem; }

.footer__bottom { border-top: 1px solid var(--color-border); padding: 1.5rem 0; }
.footer__bottom-inner {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
  font-size: 0.82rem; color: var(--color-text-dim);
}
.footer__legal { display: flex; gap: 1.25rem; }
.footer__legal a:hover { color: var(--color-accent); }

/* ---------- 14. BACK TO TOP ---------- */
.back-to-top {
  position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90;
  width: 44px; height: 44px;
  background-color: var(--color-accent); color: #1A1206;
  border: none; border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(8px); pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}
.back-to-top.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }

/* ---------- 15. SCROLL REVEAL ---------- */
[data-reveal] {
  opacity: 0; transform: translateY(16px);
  transition: opacity 600ms ease, transform 600ms ease;
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* =========================================================
   16. EQUIPE (cartões da equipe)
   ========================================================= */
.team-grid { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 700px) { .team-grid { grid-template-columns: repeat(2, 1fr); } }

.team-card { padding: 2rem; }
.team-card__avatar {
  width: 52px; height: 52px; border-radius: 50%;
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-mono); font-weight: 600; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
}
.team-card h3 { font-size: 1.3rem; margin-bottom: 0.25rem; }
.team-card__role {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--color-accent-2); margin-bottom: 1rem;
}
.team-card p:not(.team-card__role) { color: var(--color-text-dim); font-size: 0.94rem; }
.team-card__email { display: inline-block; margin-top: 0.5rem; font-size: 0.9rem; color: var(--color-accent); }
.team-card__email:hover { color: var(--color-accent-2); }

/* ---------- about-card variante "texto" (dados da empresa) ---------- */
.about-card__list--text { gap: 1.1rem; }
.about-card__list--text li { display: grid; gap: 0.2rem; }
.about-card__list--text strong {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--color-text-dim); font-weight: 600;
}
.about-card__list--text span { font-family: var(--font-body); font-size: 0.95rem; font-weight: 400; color: var(--color-text); }
.about-card__list--text a { color: var(--color-accent); }
.about-card__list--text a:hover { color: var(--color-accent-2); }

/* =========================================================
   17. OBRAS (variante de portfólio com escopo detalhado)
   ========================================================= */
.projects-grid--obras { grid-template-columns: 1fr; }
@media (min-width: 640px) { .projects-grid--obras { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .projects-grid--obras { grid-template-columns: repeat(3, 1fr); } }

.project-card__scope {
  list-style: none; display: grid; gap: 0.4rem; margin-top: 0.75rem;
}
.project-card__scope li {
  position: relative; padding-left: 1.1rem;
  font-size: 0.84rem; color: var(--color-text-dim); line-height: 1.4;
}
.project-card__scope li::before {
  content: ""; position: absolute; left: 0; top: 0.45em;
  width: 6px; height: 6px; background-color: var(--color-accent);
}

/* =========================================================
   18. CLIENTES (faixa de confiança)
   ========================================================= */
.clients-section__title { margin-top: 0.25rem; margin-bottom: 2rem; }
.clients-grid {
  list-style: none; display: grid; gap: 1rem;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 640px) { .clients-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 980px) { .clients-grid { grid-template-columns: repeat(6, 1fr); } }

.clients-grid li {
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  padding: 1.1rem 0.75rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--color-text-dim);
  transition: border-color var(--transition), color var(--transition);
}
.clients-grid li:hover { border-color: var(--color-accent); color: var(--color-text); }