/* ==========================================================================
   Sistema de diseño — capa mínima sobre Bootstrap 5
   Solo lo que Bootstrap no cubre: paleta navy, retícula tipo plano,
   tipografía técnica y hairlines.
   ========================================================================== */

:root {
  --navy: #14295e;
  --navy-2: #1f3a7d;
  --steel: #f26a21;
  --surface: #f6f7fa;
  --line: #e2e5ec;
  --ink: #1b2338;
  --muted: #6b7385;

  --bs-body-font-family: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --bs-body-color: var(--ink);
  --bs-primary: var(--navy);
  --bs-link-color: var(--steel);
  --bs-link-hover-color: var(--navy);
  --bs-border-radius: 0;
  --bs-border-color: var(--line);
}

body {
  font-family: var(--bs-body-font-family);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .display-1, .display-2, .display-3 {
  letter-spacing: -0.028em;
  font-weight: 800;
}

/* Utilidades de color ------------------------------------------------------ */
.bg-navy { background-color: var(--navy) !important; }
.bg-surface { background-color: var(--surface) !important; }
.bg-accent { background-color: var(--steel) !important; }
.text-accent { color: var(--steel) !important; }
.text-navy { color: var(--navy) !important; }
.text-muted-2 { color: var(--muted) !important; }
.text-on-navy { color: rgba(255, 255, 255, 0.7); }

/* Hairlines --------------------------------------------------------------- */
.hairline { border-top: 1px solid var(--line); }
.hairline-b { border-bottom: 1px solid var(--line); }
.hairline-light { border-top: 1px solid rgba(255, 255, 255, 0.15); }
.hairline-light-b { border-bottom: 1px solid rgba(255, 255, 255, 0.15); }
.tick { display: inline-block; width: 1.5rem; height: 1px; background: var(--line); }
.tick-light { display: inline-block; width: 1.5rem; height: 1px; background: rgba(255,255,255,.2); }

/* Tipografía técnica ------------------------------------------------------ */
.mono-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}

.display-xl {
  font-size: clamp(2.45rem, 5.9vw, 4.75rem);
  line-height: 1.02;
  letter-spacing: -0.032em;
  font-weight: 800;
}
.display-lg {
  font-size: clamp(2rem, 4.3vw, 3.25rem);
  line-height: 1.06;
  letter-spacing: -0.028em;
  font-weight: 800;
}
.display-md {
  font-size: clamp(1.6rem, 2.9vw, 2.4rem);
  line-height: 1.12;
  font-weight: 800;
}
.lead-2 {
  font-size: clamp(1rem, 1.05vw, 1.0625rem);
  line-height: 1.75;
}

/* Retícula tipo plano de ingeniería --------------------------------------- */
.blueprint {
  background-image:
    linear-gradient(to right, rgba(20, 41, 94, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20, 41, 94, 0.06) 1px, transparent 1px);
  background-size: 88px 88px;
}
.blueprint-dark {
  background-color: var(--navy);
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 88px 88px;
}

/* Ritmo vertical y contenedor -------------------------------------------- */
.section-y { padding-top: 6rem; padding-bottom: 6rem; }
@media (min-width: 992px) {
  .section-y { padding-top: 9rem; padding-bottom: 9rem; }
}
.container-wide {
  width: 100%;
  max-width: 1520px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}
@media (min-width: 576px) { .container-wide { padding-inline: 2rem; } }
@media (min-width: 992px) { .container-wide { padding-inline: 3.5rem; } }
@media (min-width: 1200px) { .container-wide { padding-inline: 5rem; } }

/* Botones ---------------------------------------------------------------- */
.btn-tech {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  min-height: 3.25rem;
  padding-inline: 1.75rem;
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: 0;
  border: 1px solid transparent;
  transition: background-color .25s ease, border-color .25s ease, color .25s ease;
}
.btn-accent { background: var(--steel); color: #fff; }
.btn-accent:hover { background: #d8551a; color: #fff; }
.btn-outline-light-tech { border-color: rgba(255,255,255,.25); color: #fff; }
.btn-outline-light-tech:hover { border-color: rgba(255,255,255,.6); background: rgba(255,255,255,.04); color: #fff; }
.btn-outline-navy-tech { border-color: var(--line); color: var(--navy); }
.btn-outline-navy-tech:hover { border-color: var(--navy); color: var(--navy); }

/* Navegación ------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: var(--navy);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.site-header .nav-link {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.875rem;
  font-weight: 600;
  padding-inline: 0;
}
.site-header .nav-link:hover { color: #fff; }
.site-header .nav-link.active { color: #fff; }
.site-header .nav-link.active::after {
  content: "";
  display: block;
  height: 1px;
  background: var(--steel);
  margin-top: 4px;
}
.logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
}

/* Listas técnicas -------------------------------------------------------- */
.tech-item { border-bottom: 1px solid var(--line); padding-block: 2rem; transition: background-color .25s ease; }
.tech-item:hover { background: #fff; }
.tech-item .num { color: rgba(20, 41, 94, 0.35); }
.tech-item:hover .num { color: var(--steel); }
.tech-item-dark { border-bottom: 1px solid rgba(255,255,255,.15); padding-block: 2rem; transition: background-color .25s ease; }
.tech-item-dark:hover { background: rgba(255,255,255,.04); }

/* Imágenes --------------------------------------------------------------- */
.img-band { position: relative; overflow: hidden; height: 280px; }
@media (min-width: 576px) { .img-band { height: 420px; } }
@media (min-width: 992px) { .img-band { height: 540px; } }
.img-band img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.img-band .veil { position: absolute; inset: 0; background: rgba(20, 41, 94, 0.45); }
.img-cover { width: 100%; height: 100%; object-fit: cover; }

/* Chips ------------------------------------------------------------------ */
.chip {
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.75rem 1rem;
  color: rgba(255, 255, 255, 0.6);
  transition: border-color .25s ease, color .25s ease;
}
.chip:hover { border-color: rgba(242, 106, 33, .6); color: #fff; }

/* WhatsApp flotante ------------------------------------------------------ */
.wa-fab {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 1040;
  width: 3.5rem;
  height: 3.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--steel);
  color: #fff;
  box-shadow: 0 18px 40px -16px rgba(20, 41, 94, .4);
  transition: transform .2s ease;
}
.wa-fab:hover { transform: scale(1.05); color: #fff; }
@media (min-width: 992px) { .wa-fab { right: 2rem; bottom: 2rem; } }

/* Reveal ----------------------------------------------------------------- */
/* Visible por defecto: solo se oculta cuando JS está disponible (clase .js en <html>) */
.reveal { opacity: 1; transform: none; transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1); }
.js .reveal { opacity: 0; transform: translateY(20px); }
.js .reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; } }

/* Galería de trabajos ------------------------------------------------------ */
.gallery-thumb {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 3;
  background: var(--surface);
}
.gallery-thumb img {
  transition: transform .5s ease;
}
.gallery-thumb:hover img {
  transform: scale(1.05);
}
.gallery-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(20, 41, 94, 0);
  transition: background .3s ease;
  pointer-events: none;
}
.gallery-thumb:hover::after {
  background: rgba(20, 41, 94, 0.1);
}

/* Formulario de contacto --------------------------------------------------- */
.form-tech { border: 1px solid var(--line); background: #fff; }
.form-tech .form-control,
.form-tech .form-select {
  border: 1px solid var(--line);
  padding: .8rem 1rem;
  font-size: .95rem;
  color: var(--navy);
  background: #fff;
}
.form-tech .form-control:focus,
.form-tech .form-select:focus {
  border-color: var(--steel);
  box-shadow: none;
}
.form-tech .form-control::placeholder { color: rgba(20, 41, 94, .45); }
.form-tech .form-label { margin-bottom: .5rem; }


.page-hero {
  padding-top: 4.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
@media (min-width: 992px) {
  .page-hero { padding-top: 7rem; padding-bottom: 4.5rem; }
}
.page-hero-intro { border-left: 1px solid rgba(255, 255, 255, 0.2); padding-left: 1.5rem; }