/* ============================================== */
/*  SECTIONS                                      */
/*  Estilos específicos por sección del sitio     */
/* ============================================== */

/* ============================================== */
/*  HEADER & NAVIGATION                           */
/* ============================================== */

header {
  display: flex;
  justify-content: center;
  /* Centrar el contenedor interno */
  align-items: center;
  padding: var(--space-md) 0;
  /* Padding horizontal eliminado, vertical mantenido */
  position: sticky;
  top: 0;
  z-index: 10000;
  /* border-bottom: 4px solid hsl(from var(--color-contrast) h s l / 20%); */

  transition: background 0.4s, border-color 0.4s;
  width: 100%;
}

header .container {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
  align-items: center;

  @media (width < 600px) {
    width: min(100% - var(--container-padding),
        var(--container-max-width));
  }

  @media (width < 480px) {
    width: min(100%,
        var(--container-max-width));
  }
}

/* Estado del encabezado cuando el menú o las opciones están abiertas */
.menu-open header,
.options-open header {
  background: transparent;
  border-color: transparent;
}

.menu-open .logo,
.options-open .logo {
  opacity: 0;
  pointer-events: none;
}

.logo {
  font-family: var(--font-condensed);
  font-variation-settings: 'wdth' 70;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;

  position: relative;

  a {
    outline: none;

    &:is(:hover, :focus)::after {
      content: '';
      position: absolute;
      inset: -.5em -2em;
      z-index: -1;
      background: var(--fondo-ultra);
      transition: 0.4s;
    }

  }

  span {
    font-weight: 400;
    color: var(--color-text-secondary);
  }

  /* Texto del logotipo responsivo: mostrar versión completa por defecto */
  .logo__short {
    display: none;
  }

  @media (max-width: 479px) {
    .logo__full {
      display: none;
    }

    .logo__short {
      display: inline;
    }
  }
}

@media (max-width: 768px) {
  header {
    padding: var(--space-md) var(--space-lg);
  }
}

/* ============================================== */
/*  HEADER ACTIONS                                */
/* ============================================== */

/* Contenedor para nav y options-btn */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* ============================================== */
/*  MAIN NAVIGATION                               */
/* ============================================== */

.main-nav {
  display: flex;
  align-items: center;
}

/* Lista de navegación - Móvil (< 900px) */
.nav-list {
  list-style: none;
  margin: 0;
  padding: var(--space-3xl) var(--space-xl);

  /* Fullscreen overlay en móvil */
  position: fixed;
  inset: 0;
  height: 101dvh;

  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  z-index: 9000;

  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-lg);

  /* Animación con clip-path */
  clip-path: circle(0% at 100% 0%);
  transition: clip-path var(--duration-lg) var(--ease-expo),
    visibility var(--duration-lg);
  pointer-events: none;
  visibility: hidden;

  @media (max-width: 768px) {
    padding: var(--space-2xl) var(--space-lg);
  }
}

/* Lista de navegación - Activa en móvil */
.nav-list.active {
  clip-path: circle(150% at 100% 0%);
  pointer-events: auto;
  visibility: visible;
}

/* Enlaces de navegación - Estado base (móvil) */
.nav-link {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(3rem, 0.7568rem + 8.6486vw, 8rem);
  line-height: 1;
  letter-spacing: 0;
  font-variation-settings: 'wght' 200;
  hyphens: auto;
  word-wrap: break-word;

  opacity: 0;
  transform: translateY(20px);
  transition: .6s;
}

.nav-list.active .nav-link {
  opacity: 1;
  transform: translateY(0);
}

/* Delays escalonados para animación de entrada */
.nav-list li:nth-child(1) .nav-link {
  transition-delay: 0.1s;
}

.nav-list li:nth-child(2) .nav-link {
  transition-delay: 0.2s;
}

.nav-list li:nth-child(3) .nav-link {
  transition-delay: 0.3s;
}

.nav-list li:nth-child(4) .nav-link {
  transition-delay: 0.4s;
}

/* Hover/focus en enlaces */
.nav-link:is(:hover, :focus) {
  font-weight: 700;
  font-variation-settings: 'wght' 700;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  outline: none;
}

:root[data-theme="dark"] .nav-link:is(:hover, :focus) {
  font-weight: 700;
  font-variation-settings: 'wght' 700;
}

/* ============================================== */
/*  DESKTOP NAVIGATION (>= 900px)                 */
/* ============================================== */

@media (min-width: 900px) {

  /* Ocultar burger button en desktop */
  .burger-btn {
    display: none !important;
  }

  /* Resetear lista a layout horizontal */
  .nav-list {
    /* Anular estilos de móvil */
    position: static;
    height: auto;
    background: transparent;
    padding: 0;

    /* Visible siempre en desktop */
    clip-path: none;
    visibility: visible;
    pointer-events: auto;

    /* Layout horizontal */
    flex-direction: row;
    gap: var(--space-sm);
    align-items: center;
  }

  /* Resetear márgenes de li (heredados de typography.css) */
  .nav-list li {
    margin: 0;
  }

  /* Resetear enlaces para desktop */
  .nav-link {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 1em;
    font-weight: 350;
    font-variation-settings: 'wght' 350;
    letter-spacing: 0.02em;
    line-height: 1;

    /* Visible siempre */
    opacity: 1;
    transform: none;
    transition: color 0.3s, font-weight 0.3s;

    color: var(--color-contrast);
    padding: var(--space-xs) var(--space-sm);
  }

  .nav-link:is(:hover, :focus),
  .nav-link.current {
    color: var(--color-text-primary) !important;
    font-weight: 300;
    font-variation-settings: 'wght' 300;
    letter-spacing: 0.02em;
  }

  /* solo en tema claro */
  :root[data-theme="light"] .nav-link.current {
    font-variation-settings: 'wght' 400;
  }

  /* Resetear delays */
  .nav-list li .nav-link {
    transition-delay: 0s;
  }
}

/* ============================================== */
/*  OPTIONS OVERLAY                               */
/* ============================================== */

.options-overlay {
  position: fixed;
  height: 101dvh;
  inset: 0;
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  z-index: 9000;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--space-3xl) var(--space-xl);

  @media (max-width: 768px) {
    padding: var(--space-2xl) var(--space-lg);
  }

  clip-path: circle(0% at 100% 0%);
  transition: clip-path var(--duration-lg) var(--ease-expo),
  visibility var(--duration-lg);
  pointer-events: none;
  visibility: hidden;
}

.options-overlay.active {
  clip-path: circle(150% at 100% 0%);
  pointer-events: auto;
  visibility: visible;
}

.options-container {
  display: grid;
  gap: var(--space-3xl);
  max-width: 800px;
  width: 100%;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s, transform 0.6s;
}

.options-overlay.active .options-container {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.2s;
}

/* ============================================== */
/*  BUTTONS (Options & Burger)                    */
/* ============================================== */

.options-btn {
  position: relative;
  z-index: 9001;
  width: clamp(1.75rem, 1.5796rem + 0.6568vw, 2rem);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  background: transparent;
  border: none;
  outline: none;
  fill: var(--color-contrast);
}

.options-btn:is(:hover, :focus) {
  fill: var(--texto-ultra);
}

.burger-btn {
  position: relative;
  z-index: 9001;
  width: clamp(1.75rem, 1.5796rem + 0.6568vw, 2rem);
  height: clamp(1.25rem, 1rem + 0.8333vw, 1.5rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: transparent;
  border: none;
  padding: 0;
  outline: none;
}

.burger-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-contrast);
  transition: transform 0.3s var(--ease-expo), background 0.3s;
}

.burger-btn:is(:hover, :focus) span {
  background: var(--texto-ultra);
}

body:not(.menu-open) :is(.options-btn, .burger-btn):focus::after {
  content: '';
  position: absolute;
  inset: -1.5em -1em -1.5em -1em;
  border-radius: 50%;
  z-index: -1;
  background: hsl(from var(--color-bg-secondary) h s l / 20%);
  transition: .6s;
}

body:not(.menu-open) .options-btn:focus::after {
  inset: -1em;
}

.menu-open .burger-btn span {
  background: var(--color-text-on-dark);
}

/* Índices 2, 3, 4 debido a .sr-only en el índice 1 */
.menu-open .burger-btn span:nth-child(2) {
  transform: translateY(11px) rotate(45deg);
}

.menu-open .burger-btn span:nth-child(3) {
  opacity: 0;
}

.menu-open .burger-btn span:nth-child(4) {
  transform: translateY(-11px) rotate(-45deg);
}

/* ============================================== */
/*  HERO SECTION                                  */
/* ============================================== */

.hero {
  position: relative;
  /* height: 200vh; */
  /* Rastro para animación de desplazamiento */
  overflow-x: clip;
  /* Ocultar boceto fuera de pantalla sin desplazamiento horizontal */
  /* padding-block-end: var(--space-xl); */
  min-height: calc(100dvh - var(--header-height));
}

.hero .container {
  height: auto;
}

.hero__title {
  margin-bottom: var(--space-lg);
  max-width: 900px;
}

/* Espaciado del lema de hero section */
.hero__title .text-technical {
  padding-block: var(--space-md);
}

/* Meta de hero section con retraso - aplica al segundo bloque de revelación en hero */
.hero__meta {
  transition-delay: 0.2s;
}

.hero__meta p {
  max-width: 65ch;
  text-wrap: balance;
}

/* Contenedor de botones CTA de hero section */
.hero__actions {
  display: grid;
  gap: var(--space-lg);
  margin-block: var(--space-3xl) var(--space-2xl);
  margin-inline-start: auto;
  width: min(100%, 500px);

  a {
    position: relative;
    font-weight: 200;
    display: block;
    padding-inline-end: var(--space-sm);
    outline: none;
  }

  a::after,
  a::before {
    content: '';
    position: absolute;
    inset: 0 -100% -1rem 0;
    z-index: -1;
    border-block-end: 2px solid transparent;
    transition: var(--duration-xl);
    transform: scaleX(0);
    transform-origin: left;
  }

  a::before {
    transform: scaleX(1);
    border-block-end-color: hsl(from currentColor h s l / 0.15);
  }

  a:is(:hover, :focus-visible):after {
    border-block-end-color: hsl(from currentColor h s l / 0.75);
    transform: scaleX(1);
    outline: none;
  }

  /* a:last-of-type {
    color: hsl(from currentColor h s l / 0.5);
  } */
}

/* Hero Slider Wrapper - Carousel de proyectos en hero */
.hero-slider-wrapper {
  background-color: var(--color-bg-primary);

  @media (width >=1024px) {
    position: sticky;
    top: var(--header-height, 104px);
    z-index: 1;
  }
}

.hero-carousel {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.hero-carousel__item {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(.75) contrast(1.1);
  opacity: 0;
  transition: opacity 1.5s var(--ease-expo);
}

.hero-carousel__item.active {
  opacity: 0.7;
}

@media (max-width: 1024px) {
  .hero {
    height: auto;
    overflow: visible;
  }
}

@media (max-width: 1200px) {
  .hero__content {
    max-width: 100%;
  }
}

/* ============================================== */
/*  ARQUITECTURA SECTION                          */
/* ============================================== */

.container.contenidos-arq {
  display: grid;
  gap: var(--space-xl);
  align-items: start;

  @media (width >=1024px) {
    /* grid-template-columns: 500px 1fr; */
    gap: var(--space-xl);
  }
}

.contenidos-arq svg {
  fill: var(--color-contrast);
  scale: 1.75;
  display: grid;
  place-items: center;
  margin-block-end: 1em;
  transform-origin: center left;
}

/* Párrafo de introducción pegajoso */
.intro-sticky {
  position: relative;

  /* Asegurar que ::after esté anclado correctamente en todas las pantallas */
  @media (width >=1024px) {
    position: sticky;
    top: 185px;
    /* Encabezado (85px) + espacio pegajoso del título de la sección */
  }

  align-self: start;
  z-index: 10;
  /* background: var(--color-bg-primary); */
  padding-block: var(--space-xl) var(--space-md);
  margin-inline-start: calc(-1 * var(--space-md));
  padding-inline-start: var(--space-md);

  &::after {
    position: absolute;
    content: "";
    display: block;
    width: 100%;
    height: 1em;
    border-block-end: solid 6px hsl(from var(--color-contrast) h s l / 20%);
    /* Anclar a la derecha para coincidir con la lógica h1::after */
    right: 0;
    /* Lógica: Comenzar en -100vw (izquierda de la pantalla), moviéndose a -1em (margen derecho) */
    transform: translateX(calc(-100vw + (100vw - 1em) * var(--intro-progress, 0)));
    opacity: calc(var(--intro-progress, 0) * 0.7);

    pointer-events: none;
    transition: none !important;
    /* Prevenir saltos/retrasos */
  }
}

/* Lista de servicios que se desplaza debajo de la introducción pegajosa */
.servicios-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(400px, 100%), 1fr));
  gap: var(--space-xl) var(--space-md);
  padding-block: var(--space-2xl) var(--space-xl);

  >* {
    text-wrap: balance;
    display: grid;
    gap: var(--space-lg);

    >* {
      margin: 0;
    }

    h3 span {
      line-height: 2.5rem !important;
    }

  }

  article p {
    color: hsl(from currentColor h s l / 75%);
    align-self: end;
  }

  /* Mayor opacidad en tema claro */
  :root[data-theme="light"] & article p {
    color: hsl(from currentColor h s l / 85%);
  }

  /* Relleno de artículos de servicios */
  article {
    padding: var(--space-md) var(--space-lg);
    position: relative;
    border-radius: var(--radius-lg);
    /* Ancla para el tooltip */
  }

  /* ==============================================
     TOOLTIP: p[data-i18n] como tooltip en hover/focus
     ============================================== */

  article p[data-i18n] {
    /* Posicionamiento absoluto */
    position: absolute;
    inset-inline: 0;
    bottom: -2lh;
    z-index: 100;
    margin: 0;
    padding: var(--space-sm) var(--space-lg);

    /* Estilos visuales del tooltip */
    background: var(--color-bg-elevated, var(--color-bg-secondary));
    box-shadow: 0 4px 20px hsl(0 0% 0% / 15%);
    font-size: var(--font-size-sm, 0.875rem);
    line-height: 1.5;

    /* ========================================
       FALLBACK (Alternativa 4): clip-path
       Funciona en todos los navegadores
       ======================================== */
    clip-path: inset(50%);
    opacity: 0;
    transform: translateY(-0.5rem);
    pointer-events: none;

    transition:
      opacity 0.35s var(--ease-out, ease-out),
      transform 0.35s var(--ease-out, ease-out),
      clip-path 0s 0.35s;
    /* Delay clip-path al ocultar */
  }

  /* Estado visible: hover o focus-within */
  article:hover p[data-i18n],
  article:focus-within p[data-i18n] {
    clip-path: inset(0);
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;

    transition:
      opacity 0.35s var(--ease-out, ease-out),
      transform 0.35s var(--ease-out, ease-out),
      clip-path 0s;
    /* Sin delay al mostrar */
  }

  /* ========================================
     MODERNO (Alternativa 3): @starting-style
     Chrome 117+, Safari 17.4+
     ======================================== */
  @supports (transition-behavior: allow-discrete) {
    article p[data-i18n] {
      /* Resetear fallback, usar visibility */
      clip-path: none;
      visibility: hidden;

      transition:
        opacity 0.35s var(--ease-out, ease-out),
        transform 0.35s var(--ease-out, ease-out),
        visibility 0.35s;
      transition-behavior: allow-discrete;
    }

    article:hover p[data-i18n],
    article:focus-within p[data-i18n] {
      clip-path: none;
      visibility: visible;
    }

    /* Animación de entrada desde estado inicial */
    @starting-style {

      article:hover p[data-i18n],
      article:focus-within p[data-i18n] {
        opacity: 0;
        transform: translateY(-0.5rem);
      }
    }
  }

  /* Feedback visual para navegación por teclado */
  article:focus-visible {
    outline: 4px dotted hsl(from var(--color-contrast) h s l / 30%);
    outline-offset: var(--space-md);
  }
}

#projekte {
  scroll-margin-top: var(--header-height);
}

/* ============================================== */
/*  ESTUDIO SECTION                               */
/* ============================================== */

#estudio> :last-child {
  margin-block-end: 0;
  padding-block-end: 0;
}

.buro-grid {
  display: grid;
  gap: var(--space-xl) var(--space-md);
  margin-block: var(--space-2xl) var(--space-3xl);

  @media (width >=900px) {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(3, auto);
    margin-block: var(--space-3xl) var(--space-xl);
  }

  /* > :first-child {
    background-color: var(--color-bg-primary);
    text-wrap: balance;
    margin: calc(var(--space-lg) * -1);
    padding: var(--space-lg);

    @media (width >=900px) {
      grid-column: 1 / -1;
      align-self: start;
      z-index: 1;
    }

    >p {
      margin-bottom: var(--space-lg);
    }
  } */

  >article {
    >* {
      text-wrap: balance;
    }

    p {
      align-self: end;
      color: hsl(from currentColor h s l / 50%);
    }

    /* Mayor opacidad en tema claro */
    :root[data-theme="light"] & p {
      color: hsl(from currentColor h s l / 60%);
    }

  }

  >article.reveal-block {
    /* Animación controlada por posición de desplazamiento de JavaScript */
    opacity: var(--reveal-opacity, 0) !important;
    transform: translateX(var(--reveal-translate, 200px)) !important;
    /* Movemos desde más lejos (100px) para que sea más evidente */
    transition: none !important;
    display: grid;
    grid-template-rows: auto auto 1fr;
    gap: var(--space-sm);


    &::before {
      background-color: var(--color-bg-primary);
    }
  }

  svg {
    fill: var(--color-contrast);
    scale: 1.75;
    display: grid;
    place-items: center;
    margin-block-end: 1.5em;
    transform-origin: bottom left;
  }
}

.empleados-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(240px, 100%), 1fr));
  gap: var(--space-md) var(--space-xl);
  padding-block: var(--space-xl);

  >* {
    margin: 0;

    &:nth-child(3n) {
      color: hsl(from var(--color-text-primary) h s l / 50%);
    }

    &:nth-child(3n + 1) {
      color: hsl(from var(--color-text-primary) h s l / 100%);
    }

    &:nth-child(3n + 2) {
      color: hsl(from var(--color-text-primary) h s l / 75%);
    }

    @media (width >=900px) {
      &:nth-child(odd) {
        color: var(--color-text-primary);
      }

      &:nth-child(even) {
        color: var(--color-text-secondary);
      }

    }
  }
}

/* ============================================== */
/*  DESIGN SECTION                                */
/* ============================================== */

#design {
  padding-block-start: var(--space-xl);
  min-height: calc(100dvh - var(--header-height, 85px));
}

/* Estilos del menú de filtro */
.design-filter {
  position: sticky;
  top: var(--sticky-offset, 190px);

  @media (width >=900px) {
    top: var(--header-height, 85px);
  }

  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-lg);
}

#design .project-carousel .sketch-card__image {
  object-fit: cover;
  object-position: top;
}


/* ============================================== */
/*  STICKY SECTION HEADERS                        */
/* ============================================== */

.section-sticky-header {
  position: sticky;
  top: var(--header-height, 85px);
  /* Ajustar para coincidir con la altura del encabezado - ahora usando variable CSS */
  /* background: var(--color-bg-primary); */
  z-index: 900;
  width: 100%;
  margin-top: calc(var(--space-md) * -1);
  margin-bottom: var(--space-xl);

  /* NO sticky en pantallas >= 900px (menú visible marca la sección) */
  @media (width >=900px) {
    position: relative;
    top: unset;
  }
}

.section-title-sticky {
  padding: var(--space-md) 0;
  margin: 0;
}

/* Nota: La consulta de medios para pantallas más pequeñas no es necesaria
   ya que --header-height se ajusta automáticamente al tamaño real del encabezado */

/* ============================================== */
/*  FOOTER & CONTACT                              */
/* ============================================== */

footer {
  font-variation-settings: 'wght' 250;
  padding-block-end: var(--space-lg) !important;

  .logo {
    margin-block-start: var(--space-lg);
  }

  strong,
  a {
    font-variation-settings: 'wght' 400;
  }
}

.texto_contenido {
  position: relative;
  display: grid;

  @media (width >=1200px) {
    grid-template-columns: 800px 1fr;
    gap: var(--space-xl);
  }
}

.direcciones {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(12.5em, 100%), 1fr));
  gap: 2rem;
  line-height: 1.5;

  +p {
    margin-block-start: var(--space-lg);
  }
}

address {
  font-size: 1.25em;
  margin-block-start: 1em;
  font-style: normal;
}

#contacto a {
  display: inline-block;
  position: relative;
  font-weight: 700;
  transition: .5s;
  outline: none;

  &::after {
    content: "";
    position: absolute;
    inset: 0 -1em;
    z-index: -1;
    background-color: transparent;
  }

  &:is(:hover, :focus-visible) {
    color: var(--texto-ultra);
  }

  &:is(:hover, :focus-visible)::after {
    background-color: var(--fondo-ultra);
    transition: .5s;
  }

}

.footer-wrapper {
  position: relative;
  overflow: hidden;
  margin-right: calc(-1 * max(var(--container-padding),
        (100vw - var(--container-max-width)) / 2));

  /* Variables de animación */
  opacity: var(--footer-opacity, 0);
  transform: translateX(var(--footer-translate, 90%));

  @media (width < 1200px) {
    display: none;
  }
}