/* ==========================================================================
   Componentes
   ========================================================================== */

/* --- Header / navegación -------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(20, 24, 27, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: var(--border-w) solid var(--line-on-dark);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-on-dark);
}

.brand-mark {
  width: 2.2rem;
  height: 2.1rem;
  flex-shrink: 0;
}

.brand-word {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.01em;
  line-height: 1;
}

.brand-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.03em;
  color: var(--text-on-dark-muted);
  margin-top: 0.15rem;
}

.nav-primary {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-links {
  display: flex;
  gap: var(--space-5);
}

.nav-links a {
  color: var(--text-on-dark-muted);
  font-size: var(--step--1);
  position: relative;
  padding-bottom: 0.3rem;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text-on-dark);
}

.nav-links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--copper);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-on-dark);
  transition: transform var(--dur-fast) var(--ease-engineer), opacity var(--dur-fast);
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: fixed;
    inset: 4.75rem 0 0 0;
    background: var(--graphite);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-5) var(--space-4);
    gap: var(--space-4);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur-med) var(--ease-engineer), transform var(--dur-med) var(--ease-engineer), visibility var(--dur-med);
  }

  .nav-links a {
    font-size: var(--step-1);
  }

  .site-header.is-open .nav-links {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-header.is-open .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .site-header.is-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  .site-header.is-open .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-primary .btn {
    display: none;
  }
}

/* --- Botones ---------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  font-size: var(--step--1);
  font-weight: 600;
  border: var(--border-w) solid transparent;
  border-radius: var(--radius);
  transition: background var(--dur-fast) var(--ease-engineer), color var(--dur-fast) var(--ease-engineer), border-color var(--dur-fast) var(--ease-engineer);
  white-space: nowrap;
}

.btn--primary {
  background: var(--copper);
  color: var(--paper);
}

.btn--primary:hover {
  background: var(--copper-light);
}

.btn--ghost-dark {
  border-color: var(--line-on-dark);
  color: var(--text-on-dark);
}

.btn--ghost-dark:hover {
  border-color: var(--copper);
  color: var(--copper-light);
}

.btn--ghost-light {
  border-color: var(--line-on-paper);
  color: var(--text-on-paper);
}

.btn--ghost-light:hover {
  border-color: var(--copper);
  color: var(--copper);
}

.btn--block {
  width: 100%;
  justify-content: center;
}

/* --- Hero -------------------------------------------------------------------- */

.hero {
  background: var(--graphite);
  color: var(--text-on-dark);
  position: relative;
  overflow: hidden;
  border-bottom: var(--border-w) solid var(--line-on-dark);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, var(--line-on-dark-soft) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(90deg, var(--line-on-dark-soft) 0 1px, transparent 1px 64px);
  mask-image: radial-gradient(ellipse 90% 70% at 30% 20%, black 40%, transparent 85%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-6);
  align-items: center;
  padding-block: var(--space-8);
}

.hero-copy p {
  margin-top: var(--space-4);
  max-width: 42ch;
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-5);
  flex-wrap: wrap;
}

.hero-figure {
  position: relative;
}

.hero-figure svg {
  width: 100%;
  height: auto;
}

.flow-line {
  stroke-dasharray: 10 8;
  animation: flow 3.6s linear infinite;
}

@keyframes flow {
  to {
    stroke-dashoffset: -36;
  }
}

.rig-turbine {
  transform-origin: 60px 300px;
  animation: spin 9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .flow-line,
  .rig-turbine {
    animation: none;
  }
}

/* --- Línea de dimensión / estadísticas tipo plano técnico ------------------- */

.spec-line {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-top: var(--space-7);
  padding-top: var(--space-4);
  border-top: var(--border-w) dashed var(--line-on-dark);
}

.spec-item {
  min-width: 9rem;
}

.spec-item .value {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step-2);
  color: var(--copper-light);
  line-height: 1;
}

.spec-item .label {
  display: block;
  margin-top: 0.35rem;
  font-size: var(--step--1);
  color: var(--text-on-dark-muted);
}

/* --- Legend / servicios ------------------------------------------------------ */

.legend-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.legend-item {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-4) var(--space-5) 0;
  border-top: var(--border-w) solid var(--line-on-paper);
}

.legend-list .legend-item:nth-child(1),
.legend-list .legend-item:nth-child(2) {
  border-top: none;
}

.legend-list .legend-item:nth-child(odd) {
  padding-right: var(--space-5);
  border-right: var(--border-w) solid var(--line-on-paper);
}

.legend-list .legend-item:nth-child(odd) {
  padding-left: 0;
}

.legend-item .icon {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--copper);
}

.legend-item h3 {
  margin-bottom: 0.5rem;
}

.legend-item p {
  color: var(--text-on-paper-muted);
  font-size: var(--step--1);
}

@media (max-width: 700px) {
  .legend-list {
    grid-template-columns: 1fr;
  }

  .legend-list .legend-item:nth-child(odd) {
    border-right: none;
    padding-inline: 0;
  }

  .legend-list .legend-item:nth-child(2) {
    border-top: var(--border-w) solid var(--line-on-paper);
  }
}

/* --- Diferenciales (lista con regla lateral) -------------------------------- */

.trait-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.trait {
  padding-left: var(--space-4);
  border-left: 2px solid var(--copper);
}

.trait h3 {
  margin-bottom: 0.4rem;
}

.trait p {
  color: var(--text-on-dark-muted);
  font-size: var(--step--1);
}

/* --- Clientes ----------------------------------------------------------------- */

.clients-marquee {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}

.clients-track {
  display: flex;
  align-items: stretch;
  gap: var(--space-5);
  width: max-content;
  animation: clients-marquee 26s linear infinite;
  will-change: transform;
}

.clients-group {
  display: flex;
  flex-shrink: 0;
  gap: var(--space-5);
}

.client-card {
  flex: 0 0 clamp(9.5rem, 15vw, 15rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-height: 10.5rem;
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.7);
  border: var(--border-w) solid var(--line-on-paper);
  border-radius: var(--radius);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
}

.client-card img {
  display: block;
  width: min(100%, 8.5rem);
  max-height: 4.5rem;
  object-fit: contain;
  filter: grayscale(0.2) contrast(1.08);
}

.client-card span {
  font-family: var(--font-display);
  font-size: var(--step-1);
  color: var(--ink);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

@keyframes clients-marquee {
  from {
    transform: translate3d(0, 0, 0);
  }

  to {
    transform: translate3d(calc(-50% - (var(--space-5) / 2)), 0, 0);
  }
}

@media (max-width: 700px) {
  .clients-marquee {
    mask-image: linear-gradient(to right, transparent, black 12%, black 88%, transparent);
  }

  .client-card {
    flex-basis: min(72vw, 18rem);
    min-height: 10rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .clients-track {
    animation: none;
  }
}

/* --- Galería de obras -------------------------------------------------------- */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 12rem;
  gap: var(--space-3);
}

.gallery-item {
  min-width: 0;
  overflow: hidden;
  border: var(--border-w) solid var(--line-on-paper);
  border-radius: var(--radius);
  background: var(--graphite);
}

.gallery-item--featured {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-trigger {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  overflow: hidden;
  color: var(--text-on-dark);
  text-align: left;
}

.gallery-trigger::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(20, 24, 27, 0.82), transparent 48%);
  pointer-events: none;
}

.gallery-trigger img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-med) var(--ease-engineer), filter var(--dur-med) var(--ease-engineer);
}

.gallery-caption {
  position: absolute;
  right: var(--space-3);
  bottom: var(--space-3);
  left: var(--space-3);
  z-index: 1;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--text-on-dark);
}

.gallery-trigger:hover img,
.gallery-trigger:focus-visible img {
  transform: scale(1.05);
  filter: brightness(1.12);
}

.gallery-lightbox {
  position: fixed;
  inset: 0;
  margin: auto;
  width: min(90vw, 960px);
  max-width: none;
  max-height: 90vh;
  padding: var(--space-3);
  border: var(--border-w) solid var(--line-on-dark);
  background: var(--graphite);
  color: var(--text-on-dark);
}

.gallery-lightbox::backdrop {
  background: rgba(20, 24, 27, 0.86);
}

.gallery-lightbox img {
  width: 100%;
  max-height: 75vh;
  object-fit: contain;
  background: var(--ink);
}

.gallery-lightbox p {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  color: var(--text-on-dark-muted);
}

.gallery-lightbox-close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  z-index: 1;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--paper);
  color: var(--ink);
  font-size: 1.75rem;
  line-height: 1;
}

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

@media (max-width: 620px) {
  .gallery-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 15rem;
  }

  .gallery-item--featured {
    grid-column: span 1;
    grid-row: span 1;
  }
}

/* --- Banda CTA ---------------------------------------------------------------- */

.cta-band {
  background: var(--copper);
  color: var(--ink);
}

.cta-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  flex-wrap: wrap;
  padding-block: var(--space-6);
}

.cta-band h2 {
  font-size: var(--step-2);
  max-width: 30ch;
}

.cta-band .btn--primary {
  background: var(--ink);
  color: var(--paper);
}

.cta-band .btn--primary:hover {
  background: var(--graphite-2);
}

/* --- Footer --------------------------------------------------------------- */

.site-footer {
  background: var(--ink);
  color: var(--text-on-dark-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-6);
  padding-block: var(--space-7);
}

.footer-grid h3 {
  color: var(--text-on-dark);
  font-size: var(--step--1);
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-3);
}

.footer-grid ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: var(--step--1);
}

.footer-grid a:hover {
  color: var(--copper-light);
}

.footer-brand p {
  margin-top: var(--space-3);
  font-size: var(--step--1);
  max-width: 32ch;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.footer-social a {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  border: var(--border-w) solid var(--line-on-dark);
  border-radius: 50%;
  transition: border-color var(--dur-fast), color var(--dur-fast);
}

.footer-social a:hover {
  border-color: var(--copper);
  color: var(--copper-light);
}

.footer-social svg {
  width: 1.35rem;
  height: 1.85rem;
}

.footer-bottom {
  border-top: var(--border-w) solid var(--line-on-dark-soft);
  padding-block: var(--space-4);
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  font-size: var(--step--1);
  font-family: var(--font-mono);
}

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

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

/* --- Formulario de contacto -------------------------------------------------- */

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: var(--space-4);
}

.form-field label {
  font-size: var(--step--1);
  font-weight: 600;
}

.form-field .hint {
  font-size: 0.8rem;
  color: var(--text-on-paper-muted);
  font-weight: 400;
}

.form-field input,
.form-field textarea,
.form-field select {
  padding: 0.8rem 0.9rem;
  border: var(--border-w) solid var(--line-on-paper);
  border-radius: var(--radius);
  background: var(--paper);
  font-family: var(--font-body);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  border-color: var(--copper);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 620px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-note {
  margin-top: var(--space-3);
  font-size: 0.85rem;
  color: var(--text-on-paper-muted);
}

.form-status {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-left: 3px solid var(--copper);
  background: var(--paper-2);
  font-size: var(--step--1);
  display: none;
}

.form-status.is-visible {
  display: block;
}

/* --- Bloques informativos (contacto / nosotros) ------------------------------ */

.info-card {
  padding: var(--space-4);
  border: var(--border-w) solid var(--line-on-paper);
  border-radius: var(--radius);
}

.info-card h3 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: var(--space-2);
}

.info-card .icon {
  width: 1.4rem;
  height: 1.4rem;
  color: var(--copper);
}

.map-frame {
  border: var(--border-w) solid var(--line-on-paper);
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.map-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* --- Historia / línea de tiempo (nosotros) ----------------------------------- */

.timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-6);
}

.timeline-item {
  padding-top: var(--space-3);
  border-top: 2px solid var(--copper);
}

.timeline-item .value {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  color: var(--copper);
  display: block;
  margin-bottom: 0.3rem;
}

.timeline-item p {
  font-size: var(--step--1);
  color: var(--text-on-paper-muted);
}

@media (max-width: 700px) {
  .timeline {
    grid-template-columns: 1fr;
  }
}

/* --- Página de error 404 ------------------------------------------------------ */

.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: var(--space-8) var(--space-4);
}

.error-page .value {
  font-family: var(--font-mono);
  font-size: var(--step-5);
  color: var(--copper);
  line-height: 1;
}