/* ==========================================================================
   projecentro - folha de estilos principal
   ========================================================================== */

:root {
  --color-primary: #0b2e4f;
  --color-primary-dark: #071b30;
  --color-primary-light: #2d6fa3;
  --color-accent: #b08d3f;
  --color-text: #212832;
  --color-text-muted: #5b6472;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f8;
  --color-border: #e2e6ea;
  --color-white: #ffffff;

  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container-width: 1180px;
  --radius: 6px;
  --transition: 0.25s ease;
  --shadow: 0 10px 30px rgba(11, 46, 79, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.2;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.1rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.3rem; }

p { margin: 0 0 1em; color: var(--color-text-muted); }

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

.section { padding: 88px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-head {
  max-width: 680px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-head .eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 12px;
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-primary { background: var(--color-primary); color: var(--color-white); }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-outline { border-color: var(--color-white); color: var(--color-white); }
.btn-outline:hover { background: rgba(255,255,255,0.12); }
.btn-outline-dark { border-color: var(--color-primary); color: var(--color-primary); }
.btn-outline-dark:hover { background: var(--color-primary); color: var(--color-white); }

/* ---------------- Header ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.brand-logo { height: 52px; width: auto; }

.header-right { display: flex; align-items: center; gap: 24px; }

.lang-switcher { display: flex; align-items: center; gap: 8px; }
.lang-flag {
  display: inline-flex;
  line-height: 1;
  opacity: 0.5;
  filter: grayscale(35%);
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.12);
  transition: opacity var(--transition), filter var(--transition), transform var(--transition);
  text-decoration: none;
}
.lang-flag svg { display: block; }
.lang-flag:hover { opacity: 0.85; transform: translateY(-1px); }
.lang-flag.active { opacity: 1; filter: none; box-shadow: 0 0 0 2px var(--color-primary); }

.nav-menu { display: flex; align-items: center; gap: 32px; }
.nav-menu a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  padding: 8px 0;
  position: relative;
  transition: color var(--transition);
}
.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--color-primary); }
.nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; }
.nav-menu a.nav-cta {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 10px 22px;
  border-radius: var(--radius);
}
.nav-menu a.nav-cta::after { display: none; }
.nav-menu a.nav-cta:hover { background: var(--color-primary-dark); color: var(--color-white); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span { width: 26px; height: 2px; background: var(--color-primary); transition: var(--transition); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  color: var(--color-white);
  background: linear-gradient(160deg, var(--color-primary-dark), var(--color-primary));
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.28;
  z-index: 0;
}
.hero-content { position: relative; z-index: 1; max-width: 720px; }
.hero h1 { color: var(--color-white); }
.hero p.lead { color: rgba(255,255,255,0.85); font-size: 1.15rem; max-width: 560px; }
.hero-actions { display: flex; gap: 16px; margin-top: 28px; flex-wrap: wrap; }

.page-hero {
  padding: 150px 0 70px;
  background: linear-gradient(160deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
  text-align: center;
}
.page-hero h1 { color: var(--color-white); margin-bottom: 8px; }
.page-hero p { color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto; }

/* ---------------- Cards / grids ---------------- */
.grid {
  display: grid;
  gap: 32px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card-body { padding: 28px; }
.card .card-img { aspect-ratio: 4/3; object-fit: cover; width: 100%; background: var(--color-bg-alt); }

.service-card { text-align: left; }
.service-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  font-family: var(--font-heading);
  color: var(--color-primary);
  font-size: 1.4rem;
}

.project-card { position: relative; display: block; color: inherit; }
.project-card .card-img { transition: transform 0.4s ease; }
.project-card:hover .card-img { transform: scale(1.05); }
.project-card .card-body { padding: 22px 24px; }
.project-tag {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 6px;
}
.project-card h3 { margin-bottom: 4px; }
.project-meta { font-size: 0.85rem; color: var(--color-text-muted); }

.featured-badge {
  position: absolute; top: 16px; left: 16px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 5px 12px;
  border-radius: 20px;
  font-weight: 600;
}

/* Filtro de categorias em Projetos */
.filters { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 48px; }
.filters button {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 9px 20px;
  border-radius: 30px;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}
.filters button:hover, .filters button.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* Sobre - stats */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.stats-row { display: flex; gap: 40px; margin-top: 32px; }
.stat-item .stat-number {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  color: var(--color-primary);
  font-weight: 700;
}
.stat-item .stat-label { font-size: 0.9rem; color: var(--color-text-muted); }

/* Galeria de detalhe de projeto */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
.gallery img { border-radius: var(--radius); aspect-ratio: 4/3; object-fit: cover; cursor: pointer; }

.lightbox {
  position: fixed; inset: 0;
  background: rgba(7,27,48,0.92);
  display: none;
  align-items: center; justify-content: center;
  z-index: 1000; padding: 24px;
}
.lightbox.open { display: flex; }
.lightbox img { max-height: 88vh; max-width: 90vw; border-radius: var(--radius); }
.lightbox-close {
  position: absolute; top: 24px; right: 30px;
  color: #fff; font-size: 2rem; cursor: pointer; background: none; border: none;
}

/* ---------------- Contactos ---------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; }
.contact-info-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-info-item .icon {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--color-bg-alt);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; font-size: 0.92rem; }
.form-control {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: var(--color-white);
}
.form-control:focus { outline: none; border-color: var(--color-primary); }
textarea.form-control { resize: vertical; min-height: 140px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.alert {
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  font-size: 0.92rem;
}
.alert-success { background: #e6f4ea; color: #1e7a34; border: 1px solid #b9e4c4; }
.alert-error { background: #fdecea; color: #b3261e; border: 1px solid #f6c8c4; }

/* CTA final */
.cta-band {
  background: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  padding: 70px 0;
}
.cta-band h2 { color: var(--color-white); }
.cta-band p { color: rgba(255,255,255,0.8); }

/* ---------------- Footer ---------------- */
.site-footer { background: var(--color-primary-dark); color: rgba(255,255,255,0.75); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
  padding: 64px 0 40px;
}
.footer-logo { height: 40px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer-col h4 { color: var(--color-white); font-size: 1rem; margin-bottom: 16px; }
.footer-col a { display: block; margin-bottom: 10px; color: rgba(255,255,255,0.7); transition: var(--transition); }
.footer-col a:hover { color: var(--color-white); }
.footer-col p { color: rgba(255,255,255,0.65); margin-bottom: 8px; }
.footer-social { display: flex; gap: 16px; margin-top: 16px; }
.footer-note { font-size: 0.78rem; color: rgba(255,255,255,0.5); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  font-size: 0.85rem;
  text-align: center;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-bottom-inner p { margin: 0; }
.livro-reclamacoes-link { display: inline-flex; opacity: 0.85; transition: opacity var(--transition); }
.livro-reclamacoes-link:hover { opacity: 1; }
.livro-reclamacoes-link img { display: block; }

/* ---------------- Responsividade ---------------- */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .header-right { gap: 12px; }
  .lang-switcher { gap: 5px; }
  .lang-flag svg { width: 19px; height: 13px; }
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: 84px; left: 0; right: 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 24px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  .nav-menu.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-menu a { padding: 14px 0; border-bottom: 1px solid var(--color-border); }
  .nav-menu a.nav-cta { margin-top: 12px; text-align: center; }

  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .section { padding: 60px 0; }
  .stats-row { gap: 24px; flex-wrap: wrap; }
  .form-row { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding: 150px 0 80px; text-align: center; }
  .hero-content { max-width: 100%; }
  .hero-actions { justify-content: center; }
}