/* ===========================================================
   J.I Fundações — Site Institucional
   Paleta: branco, cinza grafite, preto, laranja (detalhes)
   =========================================================== */

:root {
  --white: #ffffff;
  --muted: #f4f5f7;
  --border: #e5e7eb;
  --graphite: #1f232a;
  --graphite-2: #2b3038;
  --black: #0b0d10;
  --text: #4b5563;
  --primary: #ea6a1f;
  --primary-dark: #c85812;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Barlow Condensed', 'Inter', sans-serif;
  color: var(--graphite);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--primary);
}
.eyebrow::before {
  content: "";
  width: 40px; height: 1px; background: var(--primary);
}

.section-title {
  font-size: clamp(28px, 3.4vw, 44px);
  margin-top: 14px;
  color: var(--graphite);
}
.section-title .accent { color: var(--primary); }

.section-desc {
  margin-top: 18px;
  max-width: 620px;
  color: var(--text);
}

.center { text-align: center; }
.center .eyebrow, .center .section-desc { margin-left: auto; margin-right: auto; }
.center .section-desc { max-width: 640px; }

/* ===== Header ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
  max-width: 1200px; margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 46px; width: auto; }
.brand-text { font-family: 'Barlow Condensed', sans-serif; font-weight: 700; color: var(--graphite); font-size: 20px; letter-spacing: 0.02em; }
.brand-text span { color: var(--primary); }

.nav { display: flex; align-items: center; gap: 32px; }
.nav a {
  font-size: 14px; font-weight: 500; color: var(--graphite);
  position: relative; padding: 6px 0;
  transition: color .2s;
}
.nav a:hover { color: var(--primary); }
.nav a.active { color: var(--primary); }

.nav-cta {
  background: var(--primary); color: var(--white) !important;
  padding: 10px 20px !important;
  font-weight: 600;
  transition: background .2s;
}
.nav-cta:hover { background: var(--primary-dark); }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: var(--graphite); margin: 5px 0; transition: .3s; }

@media (max-width: 900px) {
  .nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--white); flex-direction: column;
    gap: 0; padding: 0;
    max-height: 0; overflow: hidden;
    border-bottom: 1px solid var(--border);
    transition: max-height .3s ease;
  }
  .nav.open { max-height: 500px; padding: 12px 0; }
  .nav a { padding: 14px 24px !important; width: 100%; }
  .menu-toggle { display: block; }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 160px 0 100px;
  overflow: hidden;
  background: var(--graphite);
  color: var(--white);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: url('../images/concreto-comercial.jpg') center/cover no-repeat;
  opacity: 0.35;
  z-index: 0;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(11,13,16,0.92) 0%, rgba(31,35,42,0.85) 55%, rgba(31,35,42,0.5) 100%);
  z-index: 1;
}
.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; align-items: center;
}
.hero h1 {
  font-size: clamp(34px, 5vw, 62px);
  color: var(--white);
}
.hero h1 .accent { color: var(--primary); }
.hero-lead {
  margin-top: 24px;
  color: rgba(255,255,255,0.82);
  font-size: 17px; max-width: 560px;
}
.hero .eyebrow { color: var(--primary); }
.hero .eyebrow::before { background: var(--primary); }

.hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; margin-top: 48px; max-width: 480px;
}
.hero-stats > div { border-left: 2px solid var(--primary); padding-left: 16px; }
.hero-stats .k { font-size: 11px; letter-spacing: .15em; text-transform: uppercase; color: rgba(255,255,255,0.6); }
.hero-stats .v { font-family: 'Barlow Condensed', sans-serif; font-size: 28px; color: var(--white); margin-top: 4px; font-weight: 600; }

.hero-media {
  position: relative;
}
.hero-media img {
  width: 100%; aspect-ratio: 4/5; object-fit: cover;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
}
.hero-badge {
  position: absolute; bottom: -24px; left: -24px;
  background: var(--primary); color: var(--white);
  padding: 18px 24px;
}
.hero-badge .lbl { font-size: 11px; letter-spacing: .15em; text-transform: uppercase; opacity: .85; }
.hero-badge .val { font-family: 'Barlow Condensed', sans-serif; font-size: 20px; margin-top: 4px; }

.hero-cta { margin-top: 36px; display: inline-flex; gap: 16px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 28px;
  font-weight: 600; font-size: 14px;
  border: 1px solid transparent; cursor: pointer;
  transition: all .2s;
}
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.4); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

@media (max-width: 900px) {
  .hero { padding: 130px 0 80px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-badge { left: 16px; }
}

/* ===== Sections ===== */
section { padding: 100px 0; }

.sobre { background: var(--white); }
.sobre-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.sobre-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.sobre-imgs img { aspect-ratio: 3/4; object-fit: cover; width: 100%; }
.sobre-imgs img:nth-child(2) { margin-top: 40px; }
.sobre-content p { margin-top: 16px; }
.sobre-content p strong { color: var(--graphite); }
.values-list { list-style: none; margin-top: 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.values-list li { display: flex; align-items: center; gap: 10px; color: var(--graphite); font-size: 14px; }
.values-list li::before { content: ""; width: 6px; height: 6px; background: var(--primary); }

@media (max-width: 900px) {
  .sobre-inner { grid-template-columns: 1fr; }
}

/* Diferenciais */
.diferenciais { background: var(--muted); }
.diferenciais-grid {
  margin-top: 60px;
  display: grid; grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
  background: var(--border);
  gap: 1px;
}
.dif-card {
  background: var(--white);
  padding: 40px 32px;
  transition: background .3s;
}
.dif-card:hover { background: var(--graphite); }
.dif-card .ico {
  width: 44px; height: 44px; color: var(--primary);
  margin-bottom: 20px;
}
.dif-card h3 { font-size: 20px; transition: color .3s; }
.dif-card p { font-size: 14px; margin-top: 10px; transition: color .3s; }
.dif-card:hover h3 { color: var(--white); }
.dif-card:hover p { color: rgba(255,255,255,0.72); }

@media (max-width: 900px) { .diferenciais-grid { grid-template-columns: 1fr; } }
@media (min-width: 640px) and (max-width: 900px) { .diferenciais-grid { grid-template-columns: 1fr 1fr; } }

/* Áreas de Atuação */
.atuacao { background: var(--white); }
.atuacao-grid {
  margin-top: 60px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.atuacao-card {
  border: 1px solid var(--border);
  transition: border-color .2s;
}
.atuacao-card:hover { border-color: var(--primary); }
.atuacao-card .thumb {
  aspect-ratio: 16/10; overflow: hidden;
}
.atuacao-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.atuacao-card:hover .thumb img { transform: scale(1.05); }
.atuacao-card .body {
  padding: 20px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.atuacao-card .num { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--text); }
.atuacao-card h3 { font-size: 18px; margin-top: 4px; }
.atuacao-card .arrow {
  width: 32px; height: 32px; border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--graphite);
}

@media (max-width: 900px) { .atuacao-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .atuacao-grid { grid-template-columns: 1fr; } }

/* Galeria */
.galeria { background: var(--muted); }
.galeria-grid {
  margin-top: 60px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
.galeria-grid a { display: block; overflow: hidden; position: relative; aspect-ratio: 1/1; }
.galeria-grid a.tall { aspect-ratio: 3/4; }
.galeria-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.galeria-grid a:hover img { transform: scale(1.08); }
.galeria-grid a::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(11,13,16,0.55), transparent 45%);
  opacity: 0; transition: opacity .3s;
}
.galeria-grid a:hover::after { opacity: 1; }

@media (max-width: 900px) { .galeria-grid { grid-template-columns: repeat(2, 1fr); } }

/* Contato */
.contato { background: var(--white); }
.contato-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contato-list { display: grid; gap: 20px; }
.contato-item {
  display: flex; gap: 20px;
  padding: 24px; border: 1px solid var(--border);
  transition: border-color .2s;
}
.contato-item:hover { border-color: var(--primary); }
.contato-item .ic {
  width: 44px; height: 44px; flex-shrink: 0;
  background: var(--graphite); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
}
.contato-item .lbl { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--text); }
.contato-item .val { color: var(--graphite); margin-top: 4px; }
.contato-item a { color: var(--graphite); }
.contato-item a:hover { color: var(--primary); }

@media (max-width: 900px) { .contato-inner { grid-template-columns: 1fr; } }

/* Footer */
.site-footer {
  background: var(--black);
  color: rgba(255,255,255,0.7);
  padding: 70px 0 30px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
}
.footer-brand img { height: 60px; }
.footer-brand p { margin-top: 18px; font-size: 14px; max-width: 320px; line-height: 1.7; }
.footer h4 {
  font-family: 'Inter', sans-serif; color: var(--white);
  font-size: 12px; text-transform: uppercase; letter-spacing: .2em;
  margin-bottom: 18px; font-weight: 600;
}
.footer ul { list-style: none; display: grid; gap: 10px; }
.footer ul a { font-size: 14px; transition: color .2s; }
.footer ul a:hover { color: var(--primary); }
.footer-bottom {
  margin-top: 50px; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 12px; color: rgba(255,255,255,0.5);
}
.footer-bottom a:hover { color: var(--primary); }

@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* ===== Legal / Quem Somos pages ===== */
.page-hero {
  padding: 150px 0 60px;
  background: var(--muted);
  border-bottom: 1px solid var(--border);
}
.page-hero .eyebrow { color: var(--primary); }
.page-hero h1 { font-size: clamp(32px, 4vw, 52px); margin-top: 14px; }
.page-hero .updated { margin-top: 12px; font-size: 14px; color: var(--text); }

.page-content { padding: 70px 0 100px; }
.page-content .container { max-width: 820px; }
.page-content h2 {
  font-size: 26px; margin: 40px 0 14px; color: var(--graphite);
}
.page-content h3 { font-size: 18px; margin: 24px 0 10px; color: var(--graphite); }
.page-content p, .page-content li { margin-bottom: 12px; }
.page-content ul { padding-left: 22px; }
.page-content strong { color: var(--graphite); }
.page-content a { color: var(--primary); text-decoration: underline; }

/* Quem somos extras */
.qs-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 40px 0; }
.qs-imgs img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }

/* Fade animation */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity .8s, transform .8s; }
.fade-in.visible { opacity: 1; transform: none; }