/* ==========================================================================
   Constructora Marmo - estilos complementarios a Tailwind CSS
   Sistema visual "Lámina de obra": cotas, rótulos y retícula de plano.
   ========================================================================== */

:root {
  --grafito: #1C272E;
  --pizarra: #2F4858;
  --hormigon: #E4E7E6;
  --calco: #F5F7F7;
  --plano: #99B3C6;
  --marmo: #FC5100;
  --marmo-oscuro: #D52C00;
  --ease-obra: cubic-bezier(.65, 0, .35, 1);
  --header-h: 76px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Public Sans', system-ui, sans-serif;
  background: var(--hormigon);
  color: var(--grafito);
  -webkit-font-smoothing: antialiased;
}

.font-display {
  font-family: 'Archivo', sans-serif;
  font-stretch: 118%;
  font-variation-settings: "wdth" 118;
}

::selection {
  background: var(--marmo);
  color: #fff;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  background: var(--marmo);
  color: #fff;
  padding: .7rem 1rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: .75rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  transition: top .2s ease;
}

.skip-link:focus {
  top: 1rem;
}

/* --------------------------------------------------------------------------
   Retícula de plano
   -------------------------------------------------------------------------- */
.grid-plano {
  background-image:
    linear-gradient(rgba(153, 179, 198, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(153, 179, 198, .07) 1px, transparent 1px);
  background-size: 56px 56px;
}

.grid-plano-claro {
  background-image:
    linear-gradient(rgba(47, 72, 88, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 72, 88, .06) 1px, transparent 1px);
  background-size: 56px 56px;
}

/* --------------------------------------------------------------------------
   Antetítulo
   -------------------------------------------------------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 2rem;
  height: 1px;
  background: var(--marmo);
}

/* --------------------------------------------------------------------------
   Cabecera y navegación
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background-color .35s ease, border-color .35s ease;
}

.site-header.is-scrolled,
.site-header.menu-open {
  background: rgba(28, 39, 46, .94);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom-color: rgba(153, 179, 198, .14);
}

.nav-link {
  position: relative;
  padding: .35rem 0;
  transition: color .25s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--marmo);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .35s var(--ease-obra);
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: #fff;
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.menu-toggle {
  width: 44px;
  height: 44px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid rgba(153, 179, 198, .3);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--calco);
  transition: transform .3s var(--ease-obra);
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4.25px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4.25px) rotate(-45deg);
}

.mobile-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: calc(100dvh - var(--header-h));
  overflow-y: auto;
  background: var(--grafito);
  padding: 1.5rem 1.25rem 2.5rem;
}

.mobile-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(153, 179, 198, .15);
  font-family: 'Archivo', sans-serif;
  font-stretch: 118%;
  font-size: 1.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--calco);
}

.mobile-link[aria-current="page"] {
  color: var(--marmo);
}

/* --------------------------------------------------------------------------
   Botones
   -------------------------------------------------------------------------- */
.btn-primary,
.btn-ghost,
.btn-ghost-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  padding: 1rem 1.5rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  transition: background-color .25s ease, color .25s ease, border-color .25s ease;
}

.btn-primary {
  background: var(--marmo);
  color: #fff;
}

.btn-primary:hover {
  background: var(--marmo-oscuro);
}

.btn-ghost {
  border: 1px solid rgba(245, 247, 247, .4);
  color: var(--calco);
}

.btn-ghost:hover {
  background: var(--calco);
  border-color: var(--calco);
  color: var(--grafito);
}

.btn-ghost-dark {
  border: 1px solid rgba(28, 39, 46, .35);
  color: var(--grafito);
}

.btn-ghost-dark:hover {
  background: var(--grafito);
  border-color: var(--grafito);
  color: var(--calco);
}

.btn-arrow {
  display: inline-block;
  transition: transform .3s var(--ease-obra);
}

a:hover .btn-arrow,
button:hover .btn-arrow {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   Cotas (elemento distintivo)
   -------------------------------------------------------------------------- */
.cota {
  --cota-bg: var(--hormigon);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 16px;
  color: var(--marmo);
}

.cota::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 1.2s var(--ease-obra) var(--cota-delay, .15s);
}

.cota::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(currentColor, currentColor) left center / 1px 100% no-repeat,
    linear-gradient(currentColor, currentColor) right center / 1px 100% no-repeat;
  opacity: 0;
  transition: opacity .3s ease var(--cota-delay, .15s);
}

.cota > span {
  position: relative;
  z-index: 1;
  padding: 0 .7rem;
  background: var(--cota-bg);
  font-family: 'IBM Plex Mono', monospace;
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
  transition: opacity .5s ease calc(var(--cota-delay, .15s) + .8s);
}

.cota.is-visible::before {
  transform: scaleX(1);
}

.cota.is-visible::after,
.cota.is-visible > span {
  opacity: 1;
}

.cota-v {
  --cota-bg: var(--grafito);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  color: var(--marmo);
}

.cota-v::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: currentColor;
  transform: scaleY(0);
  transform-origin: center top;
  transition: transform 1.4s var(--ease-obra) var(--cota-delay, .4s);
}

.cota-v::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(currentColor, currentColor) center top / 100% 1px no-repeat,
    linear-gradient(currentColor, currentColor) center bottom / 100% 1px no-repeat;
  opacity: 0;
  transition: opacity .3s ease var(--cota-delay, .4s);
}

.cota-v > span {
  position: relative;
  z-index: 1;
  padding: .7rem 0;
  background: var(--cota-bg);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: 'IBM Plex Mono', monospace;
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
  transition: opacity .5s ease calc(var(--cota-delay, .4s) + 1s);
}

.cota-v.is-visible::before {
  transform: scaleY(1);
}

.cota-v.is-visible::after,
.cota-v.is-visible > span {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   Rótulo (cajetín técnico)
   -------------------------------------------------------------------------- */
.rotulo {
  --line: rgba(153, 179, 198, .3);
  --rotulo-bg: var(--grafito);
  display: grid;
  grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.rotulo > div {
  min-width: 0;
  padding: .7rem .85rem;
  background: var(--rotulo-bg);
}

.rotulo dt {
  font-family: 'IBM Plex Mono', monospace;
  font-size: .6rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  opacity: .62;
}

.rotulo dd {
  margin-top: .2rem;
  font-size: .82rem;
  font-weight: 600;
  line-height: 1.3;
}

.rotulo-claro {
  --line: rgba(47, 72, 88, .22);
  --rotulo-bg: var(--calco);
}

.rotulo-hormigon {
  --line: rgba(47, 72, 88, .22);
  --rotulo-bg: var(--hormigon);
}

@media (max-width: 520px) {
  .rotulo {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rotulo > div:last-child:nth-child(odd) {
    grid-column: span 2;
  }
}

/* --------------------------------------------------------------------------
   Lámina de proyecto
   -------------------------------------------------------------------------- */
.lamina-media {
  position: relative;
  overflow: hidden;
  background: var(--pizarra);
}

.lamina-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease-obra);
}

.lamina-media::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(245, 247, 247, 0);
  pointer-events: none;
  transition: border-color .5s ease, inset .5s var(--ease-obra);
}

.lamina:hover .lamina-media img,
.lamina:focus-within .lamina-media img {
  transform: scale(1.04);
}

.lamina:hover .lamina-media::after,
.lamina:focus-within .lamina-media::after {
  inset: 18px;
  border-color: rgba(245, 247, 247, .6);
}

.lamina-codigo {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 1;
  padding: .3rem .55rem;
  background: var(--grafito);
  color: var(--calco);
  font-family: 'IBM Plex Mono', monospace;
  font-size: .62rem;
  letter-spacing: .16em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   Visor de plano técnico interactivo (Lámina E-01)
   -------------------------------------------------------------------------- */
.blueprint-svg {
  filter: drop-shadow(0 12px 24px rgba(0, 0, 0, .3));
}

.blueprint-layer {
  transition: opacity .4s var(--ease-obra);
}

.blueprint-layer.is-dimmed {
  opacity: .12;
}

.capa-btn {
  padding: .45rem .85rem;
  border: 1px solid rgba(153, 179, 198, .25);
  background: rgba(28, 39, 46, .7);
  color: var(--calco);
  font-family: 'IBM Plex Mono', monospace;
  font-size: .65rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  transition: all .25s ease;
}

.capa-btn:hover {
  border-color: var(--plano);
  color: #fff;
}

.capa-btn[aria-pressed="true"] {
  background: var(--marmo);
  border-color: var(--marmo);
  color: #fff;
}

.blueprint-hotspot {
  cursor: pointer;
  transition: stroke .2s ease, filter .2s ease;
}

.blueprint-hotspot:hover {
  stroke: var(--marmo) !important;
  filter: drop-shadow(0 0 4px var(--marmo));
}


/* --------------------------------------------------------------------------
   Aparición al desplazarse
   -------------------------------------------------------------------------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity .9s ease var(--d, 0s),
    transform .9s cubic-bezier(.2, .7, .2, 1) var(--d, 0s);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   Filtros de proyectos
   -------------------------------------------------------------------------- */
.filtro {
  padding: .7rem 1.1rem;
  border: 1px solid rgba(47, 72, 88, .3);
  color: var(--pizarra);
  font-family: 'IBM Plex Mono', monospace;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  transition: background-color .25s ease, color .25s ease, border-color .25s ease;
}

.filtro:hover {
  border-color: var(--grafito);
  color: var(--grafito);
}

.filtro[aria-pressed="true"] {
  background: var(--grafito);
  border-color: var(--grafito);
  color: var(--calco);
}

/* --------------------------------------------------------------------------
   Formulario
   -------------------------------------------------------------------------- */
.campo label {
  display: block;
  margin-bottom: .4rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: .65rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--pizarra);
}

.campo input,
.campo select,
.campo textarea {
  width: 100%;
  padding: .75rem 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid rgba(47, 72, 88, .35);
  border-radius: 0;
  font-size: 1rem;
  color: var(--grafito);
  transition: border-color .25s ease, box-shadow .25s ease;
}

.campo :is(input, select, textarea):focus {
  outline: none;
  border-bottom-color: var(--marmo);
  box-shadow: 0 1px 0 0 var(--marmo);
}

.campo [aria-invalid="true"] {
  border-bottom-color: #B42318;
}

.campo-error {
  margin-top: .4rem;
  font-size: .78rem;
  color: #B42318;
}

/* --------------------------------------------------------------------------
   Pie de página
   -------------------------------------------------------------------------- */
.footer-heading {
  margin-bottom: 1rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: .65rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--plano);
}

.footer-link {
  transition: color .2s ease;
}

.footer-link:hover {
  color: var(--marmo);
}

/* --------------------------------------------------------------------------
   Movimiento reducido
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
    transition-delay: 0s !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .draw [pathLength] {
    stroke-dashoffset: 0;
  }

  .draw text,
  .draw .draw-fill {
    opacity: 1;
  }
}