:root {
  --bg: #f5f7fb;
  --text: #152033;
  --muted: #64748b;
  --primary: #0f4c81;
  --primary-dark: #0a355c;
  --accent: #00a6c8;
  --card: #ffffff;
  --dark: #0d1726;
  --border: #d9e2ef;
  --shadow: 0 20px 45px rgba(15, 76, 129, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.navbar {
  max-width: 1150px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.brand-mark {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  letter-spacing: -1px;
}
.brand-text { font-size: 1.1rem; }
.nav-links { display: flex; gap: 24px; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--muted); font-weight: 700; }
.nav-links a:hover { color: var(--primary); }
.menu-toggle { display: none; border: 0; background: transparent; font-size: 1.8rem; }

.hero {
  max-width: 1150px;
  margin: 0 auto;
  padding: 90px 20px 70px;
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 34px;
  align-items: center;
}
.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 800;
}
h1, h2, h3 { line-height: 1.18; margin-top: 0; }
h1 { font-size: clamp(2.25rem, 5vw, 4.4rem); margin-bottom: 22px; }
h2 { font-size: clamp(1.8rem, 3vw, 2.65rem); margin-bottom: 14px; }
h3 { font-size: 1.25rem; }
.hero-text { max-width: 690px; color: var(--muted); font-size: 1.1rem; }
.hero-actions { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 20px;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { border-color: var(--border); color: var(--primary); background: #fff; }
.hero-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 30px;
  box-shadow: var(--shadow);
}
.hero-card ul { padding-left: 20px; margin-bottom: 0; color: var(--muted); }

.section { max-width: 1150px; margin: 0 auto; padding: 70px 20px; }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading p { color: var(--muted); }
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.service-card, .project-list article {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 10px 25px rgba(10, 53, 92, 0.06);
}
.service-card p, .project-list p { color: var(--muted); margin-bottom: 0; }
.section-dark {
  max-width: none;
  background: var(--dark);
  color: #fff;
  padding-left: calc((100% - 1150px) / 2 + 20px);
  padding-right: calc((100% - 1150px) / 2 + 20px);
}
.section-dark .section-heading p, .section-dark .project-list p { color: #b7c4d8; }
.project-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.project-list article { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.12); }

.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.gallery-grid figure {
  margin: 0;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
}
.gallery-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: #e8eef7; }
.gallery-grid figcaption { padding: 14px; font-weight: 800; color: var(--primary); }

.cta-section {
  margin: 30px auto;
  max-width: 1050px;
  padding: 45px 25px;
  text-align: center;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 30px;
}
.cta-section p { margin: 0 auto 24px; max-width: 650px; }
.cta-section .btn { background: #fff; color: var(--primary); }

.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: start;
}
.contact-info, .contact-form {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 10px 25px rgba(10, 53, 92, 0.06);
}
.contact-info p { color: var(--muted); }
.contact-form { display: grid; gap: 16px; }
.contact-form label { display: grid; gap: 8px; font-weight: 800; color: var(--primary); }
.contact-form input, .contact-form textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  font: inherit;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: 2px solid rgba(0, 166, 200, 0.22);
  border-color: var(--accent);
}
.site-footer { padding: 28px 20px; text-align: center; color: var(--muted); border-top: 1px solid var(--border); }

@media (max-width: 850px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    left: 20px; right: 20px; top: 72px;
    background: #fff;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
    flex-direction: column;
  }
  .nav-links.open { display: flex; }
  .hero, .contact-section { grid-template-columns: 1fr; }
  .cards-grid, .project-list, .gallery-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 55px; }
}


/* Área Administrador / Cotizador */
.admin-link {
  padding: 9px 14px;
  border-radius: 999px;
  color: #fff !important;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 8px 18px rgba(15, 76, 129, 0.16);
}
.btn-admin {
  color: #fff;
  background: var(--dark);
  border: 1px solid rgba(255,255,255,0.18);
}
.btn-admin:hover { background: var(--primary-dark); }
.admin-section { padding-top: 38px; padding-bottom: 38px; }
.admin-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px;
  border-radius: 28px;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.admin-card p { color: var(--muted); margin-bottom: 0; }
.admin-note { margin-top: 10px; font-size: 0.95rem; }
@media (max-width: 850px) {
  .admin-card { flex-direction: column; align-items: flex-start; }
  .admin-link { display: inline-block; width: fit-content; }
}