/*
  LCG Solutions · app.css · 2026

  Justificación explícita de features 2026 usadas:
  - @layer: separa base/componentes/utilidades y mantiene la especificidad bajo control.
  - Native nesting: se usa dentro de .site-nav, .btn, .card, .faq__item y otros componentes para agrupar estados sin preprocesador.
  - :has(): .faq__item:has(> summary:focus-visible) refuerza el contenedor cuando el summary recibe foco.
  - :is(): agrupa encabezados y enlaces equivalentes, reduciendo duplicación de selectores.
  - :where(): reset de baja especificidad para listas, botones, imágenes y tipografía.
  - oklch(): los tokens perceptuales se consumen desde tokens.css.
  - color-mix(): genera bordes/fondos hover derivados de tokens sin nuevos colores hardcodeados.
  - @container: las tarjetas destacadas y de servicio responden a su propio ancho, no solo al viewport.
  - subgrid: alinea icono, etiqueta, título, copy y CTA de tarjetas en filas coherentes.
  - clamp(): tipografía/espaciado fluido con mínimos y máximos definidos.
  - aspect-ratio: reserva geometría del logo/visual y ayuda a prevenir CLS.
  - text-wrap: balance: mejora títulos cortos sin insertar saltos manuales.
  - prefers-reduced-motion: neutraliza transiciones no esenciales.
  - @property NO se usa: no existe una custom property animada que lo justifique.
  - text-wrap: pretty NO se usa: no aporta una mejora necesaria frente a balance + medidas de línea controladas.
*/

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

  html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + var(--space-4));
    background: var(--color-bg);
  }

  body {
    margin: 0;
    min-width: 20rem;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: var(--step-0);
    line-height: 1.65;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
  }

  :where(h1, h2, h3, p, ul, ol, figure) { margin-block-start: 0; }
  :where(h1, h2, h3) {
    color: var(--color-text);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.025em;
    text-wrap: balance;
  }
  h1 { font-size: var(--step-5); }
  h2 { font-size: var(--step-3); }
  h3 { font-size: var(--step-1); }
  p { max-width: 70ch; }

  :where(ul, ol) { padding-inline-start: 1.25rem; }
  :where(img, svg) { display: block; max-width: 100%; }
  :where(button, input) { font: inherit; }
  :where(button, a, input, summary) { -webkit-tap-highlight-color: transparent; }

  a {
    color: var(--color-link);
    text-underline-offset: 0.18em;
    text-decoration-thickness: 0.09em;
  }

  :where(a, button, input, summary):focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
  }

  ::selection {
    background: var(--color-primary-100);
    color: var(--color-primary-900);
  }

  [hidden] { display: none; }

  .skip-link {
    position: fixed;
    inset-block-start: var(--space-2);
    inset-inline-start: var(--space-2);
    z-index: 1000;
    translate: 0 -180%;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
    background: var(--color-neutral-950);
    color: #fff;
    font-weight: 800;
    text-decoration: none;

    &:focus { translate: 0 0; }
  }
}

@layer components {
  .shell {
    width: min(calc(100% - 2rem), var(--content-wide));
    margin-inline: auto;

    &.shell--narrow { max-width: var(--content-narrow); }
  }

  .section {
    padding-block: clamp(4rem, 7vw, 7rem);

    &.section--muted { background: var(--color-surface-muted); }
    &.section--brand {
      background: var(--color-primary-900);
      color: #fff;

      :is(h2, h3, p) { color: inherit; }
    }
    &.section--cta {
      background:
        radial-gradient(circle at 15% 20%, color-mix(in oklch, var(--color-primary-500) 22%, transparent), transparent 32rem),
        var(--color-primary-900);
      color: #fff;
    }
  }

  .section-heading {
    display: grid;
    gap: var(--space-3);
    max-width: 48rem;
    margin-block-end: clamp(2rem, 4vw, 3.5rem);

    & > :where(h2, p) { margin: 0; }
    & > p { color: var(--color-text-muted); }

    &.section-heading--split {
      max-width: none;
      grid-template-columns: minmax(0, 1fr) minmax(18rem, 28rem);
      align-items: end;
      gap: var(--space-8);
    }
  }

  .eyebrow,
  .badge,
  .pill {
    display: inline-flex;
    width: fit-content;
    align-items: center;
    min-height: 1.75rem;
    border-radius: var(--radius-pill);
    font-size: var(--step--1);
    font-weight: 800;
    letter-spacing: 0.03em;
  }

  .eyebrow {
    color: var(--color-primary-700);
    text-transform: uppercase;
  }

  .badge {
    padding: 0.38rem 0.75rem;
    background: var(--color-primary-100);
    color: var(--color-primary-900);

    &.badge--light {
      background: color-mix(in oklch, #fff 14%, transparent);
      color: #fff;
      border: 1px solid color-mix(in oklch, #fff 30%, transparent);
    }
  }

  .pill {
    padding: 0.25rem 0.62rem;
    background: var(--color-surface-muted);
    color: var(--color-text-muted);
  }

  .icon {
    width: 1.2em;
    height: 1.2em;
    flex: 0 0 auto;
    fill: currentColor;
  }

  .btn {
    display: inline-flex;
    min-width: 2.75rem;
    min-height: 2.75rem;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.72rem 1rem;
    border: 1px solid transparent;
    border-radius: var(--radius-pill);
    font-weight: 800;
    line-height: 1.15;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 160ms ease, border-color 160ms ease, translate 160ms ease;

    &:hover { translate: 0 -1px; }

    &.btn--compact {
      min-height: 2.5rem;
      padding: 0.62rem 0.9rem;
      font-size: var(--step--1);
    }

    &.btn--primary,
    &.btn--wa {
      background: var(--color-accent-500);
      color: #fff;
      box-shadow: var(--shadow-sm);

      &:hover { background: var(--color-accent-600); }
    }

    &.btn--secondary,
    &.btn--mail {
      border-color: var(--color-border);
      background: #fff;
      color: var(--color-neutral-950);

      &:hover { border-color: var(--color-primary-700); background: var(--color-primary-50); }
    }

    &.btn--ghost {
      background: transparent;
      color: var(--color-primary-700);
      &:hover { background: var(--color-primary-50); }
    }

    &.btn--dark {
      background: var(--color-neutral-950);
      color: #fff;
    }

    &.btn--light {
      background: #fff;
      color: var(--color-neutral-950);
      &:hover { background: var(--color-neutral-100); }
    }
  }

  .site-header {
    position: sticky;
    inset-block-start: 0;
    z-index: 100;
    height: var(--header-height);
    border-block-end: 1px solid color-mix(in oklch, var(--color-border) 75%, transparent);
    background: color-mix(in oklch, #fff 94%, transparent);
    backdrop-filter: blur(14px);

    .site-header__inner {
      min-height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-6);
    }
  }

  .brand {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-neutral-950);
    font-weight: 800;
    text-decoration: none;

    .brand__media {
      width: 2.7rem;
      aspect-ratio: 1;
      overflow: hidden;
      border-radius: 0.8rem;

      img { width: 100%; height: 100%; object-fit: cover; }
    }

    .brand__name { white-space: nowrap; }
  }

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

    .site-nav__list {
      display: flex;
      align-items: center;
      gap: var(--space-1);
      margin: 0;
      padding: 0;
      list-style: none;

      a {
        display: inline-flex;
        min-height: 2.75rem;
        align-items: center;
        padding-inline: 0.72rem;
        border-radius: var(--radius-pill);
        color: var(--color-neutral-950);
        font-size: var(--step--1);
        font-weight: 700;
        text-decoration: none;

        &:hover { background: var(--color-surface-muted); }
      }
    }
  }

  .nav-toggle {
    display: none;
    min-width: 3rem;
    min-height: 2.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    background: #fff;
    color: var(--color-neutral-950);
    font-weight: 800;
    cursor: pointer;
  }

  .hero {
    overflow: clip;
    background:
      radial-gradient(circle at 85% 20%, color-mix(in oklch, var(--color-primary-100) 70%, transparent), transparent 28rem),
      linear-gradient(180deg, #fff 0%, var(--color-neutral-0) 100%);

    .hero__grid {
      display: grid;
      grid-template-columns: minmax(0, 1.12fr) minmax(18rem, 0.88fr);
      align-items: center;
      gap: clamp(2rem, 6vw, 6rem);
    }

    .hero__copy {
      display: grid;
      justify-items: start;
      gap: var(--space-6);

      & > :where(h1, p) { margin: 0; }
    }

    .hero__lead {
      font-size: var(--step-1);
      color: var(--color-text-muted);
      max-width: 62ch;
    }

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

    .hero__visual {
      position: relative;
      display: grid;
      place-items: center;
      gap: var(--space-6);
      min-width: 0;
      padding: clamp(1.25rem, 3vw, 2rem);
      border: 1px solid color-mix(in oklch, var(--color-primary-700) 20%, transparent);
      border-radius: var(--radius-lg);
      background: color-mix(in oklch, #fff 92%, var(--color-primary-50));
      box-shadow: var(--shadow-md);
    }

    .hero__logo {
      width: min(72%, 18rem);
      aspect-ratio: 1;
      overflow: hidden;
      border-radius: 2.4rem;
      background: var(--color-surface);

      img { width: 100%; height: 100%; object-fit: cover; }
    }

    .hero__capabilities {
      width: 100%;
      display: grid;
      gap: var(--space-2);
      margin: 0;
      padding: 0;
      list-style: none;

      li {
        display: grid;
        grid-template-columns: 7rem 1fr;
        gap: var(--space-3);
        padding-block: var(--space-3);
        border-block-start: 1px solid var(--color-border);
      }
      strong { color: var(--color-primary-700); }
      span { color: var(--color-text-muted); }
    }
  }

  .proof-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2) var(--space-6);
    margin: 0;
    padding: 0;
    list-style: none;
    color: var(--color-text-muted);
    font-size: var(--step--1);
    font-weight: 700;

    li::before {
      content: "✓";
      margin-inline-end: var(--space-2);
      color: var(--color-primary-700);
    }
  }

  .featured-grid,
  .service-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .featured-grid { container-type: inline-size; container-name: featured-grid; }
  .service-grid { container-type: inline-size; container-name: service-grid; }

  .card,
  .service-card {
    display: grid;
    grid-template-rows: subgrid;
    grid-row: span 5;
    gap: var(--space-4);
    min-width: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: #fff;

    :where(h3, p) { margin: 0; }
    p { color: var(--color-text-muted); }
  }

  .card {
    padding: var(--space-6);

    &.card--featured {
      container-type: inline-size;
      box-shadow: var(--shadow-sm);
    }

    .card__icon {
      display: grid;
      width: 3rem;
      aspect-ratio: 1;
      place-items: center;
      border-radius: var(--radius-sm);
      background: var(--color-primary-100);
      color: var(--color-primary-700);
      font-size: 1.35rem;
    }
  }

  .benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .benefit-card {
    display: grid;
    gap: var(--space-3);

    :where(h3, p) { margin: 0; }
    p { color: var(--color-text-muted); }

    .benefit-card__icon {
      display: grid;
      width: 3.25rem;
      aspect-ratio: 1;
      place-items: center;
      border-radius: var(--radius-md);
      background: var(--color-primary-50);
      color: var(--color-primary-700);
      font-size: 1.4rem;
    }
  }

  .service-search {
    form { display: grid; gap: var(--space-2); }
    label { color: var(--color-text-muted); font-size: var(--step--1); font-weight: 800; }
    input {
      width: 100%;
      min-height: 3rem;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-pill);
      background: #fff;
      color: var(--color-neutral-950);
      padding-inline: var(--space-4);

      &::placeholder { color: color-mix(in oklch, var(--color-text-muted) 78%, #fff); }
      &:focus { border-color: var(--color-info); }
    }
  }

  .search-status {
    margin-block: calc(var(--space-6) * -1) var(--space-6);
    color: var(--color-text-muted);
    font-size: var(--step--1);
  }

  .service-card {
    padding: var(--space-5, 1.25rem);
    container-type: inline-size;

    .service-card__icon {
      display: grid;
      width: 2.8rem;
      aspect-ratio: 1;
      place-items: center;
      border-radius: var(--radius-sm);
      background: var(--color-primary-50);
      color: var(--color-primary-700);
      font-size: 1.25rem;
    }

    .text-link { align-self: end; }
  }

  .text-link {
    display: inline-flex;
    min-height: 2rem;
    width: fit-content;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-primary-700);
    font-weight: 800;
    text-decoration: none;

    &:hover { text-decoration: underline; }
  }

  .process-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin: 0;
    padding: 0;
    list-style: none;

    &.process-list--compact { margin-block-start: var(--space-8); }
  }

  .process-step {
    position: relative;
    display: grid;
    gap: var(--space-3);
    padding: var(--space-6);
    border-block-start: 3px solid var(--color-primary-500);
    background: var(--color-neutral-0);

    :where(h3, p) { margin: 0; }
    p { color: var(--color-text-muted); }

    .process-step__number {
      font-size: var(--step-2);
      font-weight: 800;
      color: var(--color-primary-700);
    }
  }

  .case-demo {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.8fr);
    gap: clamp(2rem, 6vw, 6rem);
    align-items: start;

    article { display: grid; justify-items: start; gap: var(--space-4); }
    :where(h2, p) { margin: 0; }

    .case-demo__flow {
      display: grid;
      gap: var(--space-3);
      margin: 0;
      padding: 0;
      list-style: none;

      li {
        display: grid;
        gap: var(--space-1);
        padding: var(--space-4);
        border: 1px solid color-mix(in oklch, #fff 24%, transparent);
        border-radius: var(--radius-md);
        background: color-mix(in oklch, #fff 8%, transparent);
      }
      span { color: color-mix(in oklch, #fff 78%, transparent); }
    }
  }

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

  .faq__item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: #fff;
    overflow: clip;

    summary {
      display: flex;
      min-height: 3.5rem;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-4);
      padding: var(--space-4) var(--space-6);
      color: var(--color-neutral-950);
      font-weight: 800;
      cursor: pointer;
      list-style: none;

      &::-webkit-details-marker { display: none; }
      &::after {
        content: "+";
        display: grid;
        width: 1.75rem;
        aspect-ratio: 1;
        place-items: center;
        border-radius: 50%;
        background: var(--color-primary-50);
        color: var(--color-primary-700);
        font-size: 1.3rem;
      }
    }

    &[open] {
      border-color: color-mix(in oklch, var(--color-primary-700) 40%, var(--color-border));

      summary::after { content: "−"; }
    }

    /* :has() permite reflejar el foco del summary en el contenedor completo sin JS. */
    &:has(> summary:focus-visible) { border-color: var(--color-info); }

    p {
      margin: 0;
      padding: 0 var(--space-6) var(--space-6);
      color: var(--color-text-muted);
    }
  }

  .cta-panel {
    display: grid;
    justify-items: start;
    gap: var(--space-4);
    padding: clamp(1.5rem, 5vw, 4rem);
    border: 1px solid color-mix(in oklch, #fff 22%, transparent);
    border-radius: var(--radius-lg);
    background: color-mix(in oklch, #fff 8%, transparent);

    :where(h2, p) { margin: 0; color: #fff; }
    .eyebrow { color: var(--color-primary-100); }

    .cta-panel__actions {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-3);
      margin-block-start: var(--space-2);
    }
  }

  .service-hero {
    background: linear-gradient(180deg, #fff, var(--color-neutral-0));

    .service-hero__grid {
      display: grid;
      grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.65fr);
      gap: clamp(2rem, 6vw, 6rem);
      align-items: center;
    }

    .service-hero__copy {
      display: grid;
      justify-items: start;
      gap: var(--space-5, 1.25rem);

      :where(h1, p) { margin: 0; }
    }
  }

  .breadcrumb {
    ol {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-2);
      margin: 0;
      padding: 0;
      list-style: none;
      color: var(--color-text-muted);
      font-size: var(--step--1);
    }

    li:not(:last-child)::after { content: "/"; margin-inline-start: var(--space-2); color: var(--color-border); }
    a { color: inherit; }
  }

  .service-summary {
    display: grid;
    gap: var(--space-5, 1.25rem);
    padding: clamp(1.5rem, 4vw, 2.5rem);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-md);

    :where(h2, ul) { margin: 0; }
    h2 { font-size: var(--step-2); }

    .service-summary__icon {
      display: grid;
      width: 4rem;
      aspect-ratio: 1;
      place-items: center;
      border-radius: var(--radius-md);
      background: var(--color-primary-100);
      color: var(--color-primary-700);
      font-size: 1.8rem;
    }
  }

  .check-list {
    display: grid;
    gap: var(--space-3);
    padding: 0;
    list-style: none;

    li {
      position: relative;
      padding-inline-start: 1.8rem;
      color: var(--color-text-muted);

      &::before {
        content: "✓";
        position: absolute;
        inset-inline-start: 0;
        color: var(--color-primary-700);
        font-weight: 900;
      }
    }
  }

  .site-footer {
    padding-block: var(--space-16) var(--space-6);
    background: var(--color-neutral-950);
    color: #fff;

    :is(h2, p, a, span) { color: inherit; }
    h2 { font-size: var(--step-1); }

    .site-footer__grid {
      display: grid;
      grid-template-columns: 1.5fr repeat(3, 1fr);
      gap: var(--space-8);
    }

    .site-footer__brand p { color: color-mix(in oklch, #fff 72%, transparent); }
    .site-footer__bottom {
      margin-block: var(--space-12) 0;
      padding-block-start: var(--space-6);
      border-block-start: 1px solid color-mix(in oklch, #fff 15%, transparent);
      color: color-mix(in oklch, #fff 64%, transparent);
      font-size: var(--step--1);
    }
  }

  .footer-links,
  .social-links {
    display: grid;
    gap: var(--space-2);
    margin: 0;
    padding: 0;
    list-style: none;

    a {
      display: inline-flex;
      min-height: 2rem;
      align-items: center;
      gap: var(--space-2);
      color: color-mix(in oklch, #fff 78%, transparent);
      text-decoration: none;

      &:hover { color: #fff; text-decoration: underline; }
    }
    span { color: color-mix(in oklch, #fff 68%, transparent); }
  }

  @container featured-grid (max-width: 52rem) {
    .card--featured { padding: var(--space-5, 1.25rem); }
  }

  @container service-grid (max-width: 46rem) {
    .service-card h3 { font-size: var(--step-0); }
  }
}

@layer utilities {
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  @media (max-width: 68rem) {
    .featured-grid,
    .service-grid,
    .benefits-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .site-footer .site-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .site-nav {
      position: absolute;
      inset: calc(100% + 1px) 1rem auto;
      display: none;
      align-items: stretch;
      padding: var(--space-4);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      background: #fff;
      box-shadow: var(--shadow-md);

      &[data-open] { display: grid; }
      .site-nav__list { display: grid; }
      .site-nav__list a { width: 100%; }
    }

    .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  }

  @media (max-width: 48rem) {
    :root { --header-height: 4.25rem; }
    .shell { width: min(calc(100% - 1.25rem), var(--content-wide)); }
    .section { padding-block: clamp(3rem, 12vw, 5rem); }

    .brand .brand__name { font-size: 0.96rem; }

    .hero .hero__grid,
    .service-hero .service-hero__grid,
    .case-demo { grid-template-columns: 1fr; }

    .hero .hero__visual { max-width: 34rem; }
    .hero .hero__actions,
    .cta-panel .cta-panel__actions { width: 100%; }
    .hero .hero__actions .btn,
    .cta-panel .cta-panel__actions .btn { flex: 1 1 100%; }

    .section-heading.section-heading--split { grid-template-columns: 1fr; }
    .featured-grid,
    .service-grid,
    .benefits-grid,
    .process-list { grid-template-columns: 1fr; }

    .card,
    .service-card { grid-template-rows: auto; grid-row: auto; }

    .site-footer .site-footer__grid { grid-template-columns: 1fr; }
  }

  /* WCAG 2.2: usuarios que solicitan más contraste reciben bordes y focos reforzados. */
  @media (prefers-contrast: more) {
    :root {
      --color-border: var(--color-neutral-600);
      --color-text-muted: var(--color-neutral-950);
    }

    :where(a, button, input, summary):focus-visible { outline-width: 4px; }
    .card, .service-card, .faq__item, .service-summary { border-width: 2px; }
  }

  /* Toda transición decorativa/no esencial se neutraliza para reduced motion. */
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
      animation-duration: 0.01ms;
      animation-iteration-count: 1;
      transition-duration: 0.01ms;
      scroll-behavior: auto;
    }
  }
}

/* 404 branded: reutiliza tokens y componentes para mantener la misma experiencia del sitio. */
@layer components {
  .error-hero {
    min-block-size: min(72svh, 46rem);
    display: grid;
    place-items: center;

    .error-hero__inner {
      max-inline-size: var(--content-narrow);
      text-align: center;
      display: grid;
      justify-items: center;
      gap: var(--space-6);
    }

    h1 {
      max-inline-size: 16ch;
      margin: 0;
      font-size: var(--step-4);
      text-wrap: balance;
    }

    p {
      max-inline-size: 62ch;
      margin: 0;
      color: var(--color-text-muted);
      font-size: var(--step-1);
    }
  }

  .error-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4) var(--space-6);
  }
}

@layer utilities {
  /* El atributo HTML hidden debe ganar sobre display:grid/flex de componentes; utilities es la última capa y evita elevar especificidad. */
  [hidden] {
    display: none;
  }
}