/* Nord — estilos del sitio. Mobile-first. */

:root {
  --color-bordo: #641414;
  --color-bordo-dark: #4a0f0f;
  --color-ink: #1a1a1a;
  --color-grafito: #232323;
  --color-paper: #faf7f4;
  --color-concrete: #e9e4df;
  --color-white: #ffffff;

  --font-display: 'Archivo', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-wordmark: 'Poppins', system-ui, sans-serif;

  --container-width: 1200px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.1;
  margin: 0 0 var(--space-2);
  text-wrap: balance;
}

p {
  margin: 0 0 var(--space-2);
}

a {
  color: var(--color-bordo);
}

a:hover {
  color: var(--color-bordo-dark);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-2);
}

.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 0.9em 1.6em;
  border-radius: 2px;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 0.95rem;
}

.btn--primary {
  background: var(--color-bordo);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-bordo-dark);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}

.completar {
  display: inline-block;
  background: #fff6d6;
  color: #6b5a00;
  border: 1px dashed #b89b00;
  padding: 0.15em 0.5em;
  font-size: 0.85em;
  border-radius: 3px;
}

@media (min-width: 768px) {
  :root {
    --space-5: 6rem;
  }
}

@media (min-width: 1200px) {
  .container {
    padding: 0 var(--space-4);
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  background: rgba(250, 247, 244, 0.92);
  backdrop-filter: blur(6px);
}

.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-1);
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 0.4em;
  text-decoration: none;
}

.site-header__brand img {
  width: clamp(34px, 9vw, 44px);
  height: auto;
}

.site-header__wordmark {
  font-family: var(--font-wordmark);
  font-weight: 800;
  font-size: clamp(1.5rem, 6vw, 1.9rem);
  letter-spacing: 0;
  line-height: 1;
  color: var(--color-ink);
}

.site-header__wordmark-accent {
  color: var(--color-bordo);
}

.nav {
  display: flex;
  position: fixed;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-white);
  flex-direction: column;
  padding: var(--space-2);
  transform: translateY(-120%);
  transition: transform 0.25s ease;
}

.nav.is-open {
  transform: translateY(0);
}

.nav__link {
  display: block;
  padding: var(--space-1) 0;
  color: var(--color-ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-bordo);
}

.nav__toggle {
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  height: 2px;
  background: var(--color-ink);
}

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  color: var(--color-white);
}

.hero__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26, 26, 26, 0.15) 0%, rgba(26, 26, 26, 0.85) 100%);
}

.hero__content {
  position: relative;
  padding-block: var(--space-5);
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6em;
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  opacity: 0.9;
}

.hero__eyebrow-bar {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--color-bordo);
}

.hero h1 {
  font-size: clamp(2.75rem, 10vw, 5.5rem);
  letter-spacing: -0.01em;
}

.hero__subtitle {
  max-width: 32rem;
  font-size: 1.1rem;
  opacity: 0.9;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

@media (min-width: 900px) {
  .nav__toggle {
    display: none;
  }

  .nav {
    position: static;
    flex-direction: row;
    gap: var(--space-3);
    padding: 0;
    background: none;
    transform: none;
  }

  .nav__link {
    padding: 0;
  }
}

.sistemas {
  padding-block: var(--space-5);
}

.sistemas__tabs {
  display: flex;
  gap: var(--space-1);
  margin-block: var(--space-3);
}

.sistemas__tab {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--color-concrete);
  border: none;
  padding: 0.75em 1.5em;
  cursor: pointer;
  border-bottom: 3px solid transparent;
}

.sistemas__tab.is-active {
  background: var(--color-white);
  border-bottom-color: var(--color-bordo);
  color: var(--color-bordo);
}

.sistemas__panel[hidden] {
  display: none;
}

.sistemas__banner {
  width: 100%;
  height: clamp(220px, 35vw, 420px);
  object-fit: cover;
  margin-bottom: var(--space-2);
}

.sistemas__intro {
  max-width: 42rem;
  margin-bottom: var(--space-3);
}

.producto-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.producto-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  margin-bottom: var(--space-1);
}

.producto-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.35em;
}

.producto-card p {
  font-size: 0.92rem;
  color: #4a4a4a;
}

@media (min-width: 700px) {
  .producto-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .producto-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.proyectos {
  padding-block: var(--space-5);
  background: var(--color-concrete);
}

.carousel {
  --carousel-gap: var(--space-2);
  --carousel-visible: 1;
  position: relative;
}

.carousel__viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.carousel__viewport::-webkit-scrollbar {
  display: none;
}

.carousel__viewport:focus-visible {
  outline: 2px solid var(--color-bordo);
  outline-offset: 4px;
}

.carousel__track {
  display: flex;
  gap: var(--carousel-gap);
}

.carousel__track .obra-item {
  flex: 0 0 calc((100% - (var(--carousel-visible) - 1) * var(--carousel-gap)) / var(--carousel-visible));
  scroll-snap-align: start;
}

.carousel__btn {
  position: absolute;
  top: 50%;
  z-index: 2;
  width: 2.75rem;
  height: 2.75rem;
  transform: translateY(-50%);
  border: none;
  border-radius: 50%;
  background: var(--color-bordo);
  color: var(--color-white);
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
}

.carousel__btn:hover:not(:disabled) {
  background: var(--color-bordo-dark);
}

.carousel__btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.carousel__btn--prev {
  left: var(--space-1);
}

.carousel__btn--next {
  right: var(--space-1);
}

.carousel__dots {
  display: flex;
  justify-content: center;
  gap: var(--space-1);
  margin-top: var(--space-2);
}

.carousel__dot {
  width: 0.65rem;
  height: 0.65rem;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--color-bordo);
  opacity: 0.3;
  cursor: pointer;
}

.carousel__dot.is-active {
  opacity: 1;
}

.obra-item {
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  overflow: hidden;
}

.obra-item img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.obra-item:hover img {
  transform: scale(1.04);
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(26, 26, 26, 0.92);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3);
}

.lightbox[hidden] {
  display: none;
}

.lightbox__img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
}

.lightbox__caption {
  color: var(--color-white);
  margin-top: var(--space-1);
}

.lightbox__close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  font-size: 2rem;
  line-height: 1;
  background: none;
  border: none;
  color: var(--color-white);
  cursor: pointer;
}

@media (min-width: 600px) {
  .carousel {
    --carousel-visible: 2;
  }
}

@media (min-width: 900px) {
  .carousel {
    --carousel-visible: 3;
  }
}

.presupuesto {
  padding-block: var(--space-5);
  border-top: 3px solid var(--color-bordo);
}

.form {
  max-width: 40rem;
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.form__group {
  display: grid;
  gap: 0.35em;
  min-width: 0;
}

.form__label {
  font-weight: 600;
  font-size: 0.9rem;
}

.form__input {
  width: 100%;
  min-width: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.7em;
  border: 1px solid #c9c2ba;
  border-radius: 2px;
  background: var(--color-white);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-bordo);
  box-shadow: 0 0 0 3px rgba(100, 20, 20, 0.15);
}

.form button[type='submit'] {
  justify-self: start;
}

.nosotros {
  padding-block: var(--space-5);
  background: var(--color-grafito);
  color: var(--color-white);
}

.nosotros__grid {
  display: grid;
  gap: var(--space-3);
}

.nosotros__media {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.nosotros h2 {
  color: var(--color-white);
}

@media (min-width: 900px) {
  .nosotros__grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.contacto {
  padding-block: var(--space-5);
}

.contacto__grid {
  display: grid;
  gap: var(--space-4);
}

.contacto__list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--space-1);
}

.contacto__map {
  min-height: 260px;
  border: 1px solid var(--color-concrete);
}

.contacto__map iframe {
  width: 100%;
  height: 100%;
  min-height: 260px;
  border: 0;
}

@media (min-width: 900px) {
  .contacto__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.whatsapp-float {
  position: fixed;
  right: var(--space-2);
  bottom: var(--space-2);
  z-index: 60;
  background: #25d366;
  color: var(--color-white);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  padding: 0.75em 1.1em;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  white-space: nowrap;
}

.whatsapp-float .completar {
  font-size: 0.7em;
  padding: 0.1em 0.35em;
}

.site-footer {
  background: var(--color-ink);
  color: var(--color-white);
  padding-block: var(--space-3);
}

.site-footer__grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  text-align: center;
  font-size: 0.85rem;
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: 0.4em;
}

.site-footer__brand img {
  border-radius: 3px;
}

.site-footer__wordmark {
  font-family: var(--font-wordmark);
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: 0;
  color: var(--color-white);
}

.site-footer__meta {
  display: grid;
  gap: 0.3em;
}

.site-footer__meta p {
  margin: 0;
}

.site-footer__credit {
  opacity: 0.7;
  font-size: 0.8rem;
}

.site-footer__credit a {
  color: inherit;
  text-decoration: underline;
}

@media (min-width: 700px) {
  .site-footer__grid {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}