/* ====================================================================
   UTILS.CSS — THINKCHIP
   Utilidades, páginas estáticas y media queries consolidadas.
   ────────────────────────────────────────────────────────────────────
   16.0 Página Contacto (.c-contact-layout, .c-contact-form)
   17.0 Páginas Legales (.c-legal-content)
   18.0 Cookie Banner estructura (.c-cookie-banner)
        Botones cookie → ver buttons.css
   19.0 SEO: Silo Hub (.c-silo-hub, .c-silo-card)
   20.0 RESPONSIVE (Media Queries consolidadas)
==================================================================== */

/* ====================================================================
   16.0 - Página Contacto
==================================================================== */
.c-contact-layout {
    display: grid;
    gap: 3rem;
    margin-top: 3rem;
}
@media (min-width: 992px) {
    .c-contact-layout {
        grid-template-columns: 1fr 1.2fr;
        gap: 5rem;
    }
}
.c-contact-reasons { list-style: none; padding: 0; }
.c-contact-reasons li { padding: 1rem 0; border-bottom: 1px solid var(--color-borde); }
.c-contact-reasons h4 { margin-bottom: 0.25rem; }
.c-contact-reasons p { margin: 0; font-size: 0.95rem; }
.c-contact-form {
    background-color: var(--color-superficie);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--color-borde);
}
.c-form-group { margin-bottom: 1.5rem; }
.c-form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-texto-principal);
}
.c-form-group input,
.c-form-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    background-color: var(--color-fondo);
    border: 1px solid var(--color-borde);
    color: var(--color-texto-principal);
    font-family: var(--fuente-principal);
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.c-form-group input:focus,
.c-form-group textarea:focus {
    outline: none;
    border-color: var(--color-acento);
    box-shadow: 0 0 10px hsla(212, 100%, 50%, 0.2);
}

/* ====================================================================
   17.0 - Páginas Legales
==================================================================== */
.c-legal-content {
    background-color: hsla(212, 29%, 11%, 0.5);
    border: 1px solid var(--color-borde);
    border-radius: 16px;
    padding: 2rem 3rem;
    margin-top: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}
.c-legal-content h2 {
    font-size: 1.6rem;
    margin-top: 2.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-borde);
}
.c-legal-content h2:first-of-type { margin-top: 0; }
.c-legal-content p, 
.c-legal-content ul { color: var(--color-texto-secundario); line-height: 1.8; }
.c-legal-content ul { list-style-position: inside; padding-left: 1rem; }
.c-legal-content li { margin-bottom: 0.75rem; }
.c-legal-content a { color: var(--color-acento); font-weight: 600; }

/* ====================================================================
   18.0 - Cookie Banner (estructura; botones → ver buttons.css)
==================================================================== */
.c-cookie-banner {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: #111;
  color: #fff;
  padding: 12px 14px;
  z-index: 9999;
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}
.c-cookie-banner__text { line-height: 1.4; }
.c-cookie-banner__actions { display: flex; gap: 8px; }

/* ====================================================================
   19.0 - SEO Silo Hub (.c-silo-hub, .c-silo-card)
==================================================================== */
.c-silo-hub {
  margin: 4rem 0 2rem;
  padding: 3rem 1.5rem;
  background: linear-gradient(135deg, hsla(212, 29%, 11%, 0.6), hsla(212, 29%, 8%, 0.8));
  border: 1px solid var(--color-borde);
  border-radius: 24px;
  position: relative;
  overflow: hidden;
}
.c-silo-hub::before {
  content: "";
  position: absolute;
  top: -50px; right: -50px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, var(--color-acento) 0%, transparent 70%);
  opacity: 0.1;
  filter: blur(40px);
}
.c-silo-hub__title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: center;
  color: var(--color-texto-principal);
}
.c-silo-hub__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}
.c-silo-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background-color: hsla(212, 29%, 15%, 0.5);
  border: 1px solid var(--color-borde);
  border-radius: 16px;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}
.c-silo-card:hover {
  background-color: hsla(212, 29%, 20%, 0.8);
  border-color: var(--color-acento);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px -10px hsla(212, 100%, 60%, 0.2);
}
.c-silo-card__icon {
  font-size: 1.5rem;
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: hsla(0, 0%, 100%, 0.05);
  border-radius: 12px;
  flex-shrink: 0;
}
.c-silo-card__content { display: flex; flex-direction: column; }
.c-silo-card__name { font-weight: 600; color: var(--color-texto-principal); font-size: 1rem; }
.c-silo-card__desc { font-size: 0.85rem; color: var(--color-texto-secundario); }
@media (max-width: 768px) {
  .c-silo-hub { padding: 2rem 1rem; }
  .c-silo-hub__title { font-size: 1.5rem; }
}

/* ====================================================================
   20.0 - RESPONSIVE (Media Queries consolidadas)
==================================================================== */

/* --- ESCRITORIO PEQUEÑO (hasta 1200px) --- */
@media (max-width: 1200px) {
  .container { max-width: 980px; }
}

/* --- TABLETAS (hasta 991.98px) --- */
@media (max-width: 991.98px) {
  .c-intro-promises { flex-direction: column; gap: 2rem; }
  .c-intro-promise-item:not(:last-child)::after { display: none; }
  .c-intro-promise-item { padding-left: 1rem; padding-right: 1rem; }
  .c-triptych-container { max-width: 700px; }
  .grid-destacado,
  .recomendaciones-grid-estatica,
  .guides-list-grid { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
  .c-flip-card__back-title { font-size: 2.2rem; }
  .comparador-dual { overflow-x: auto; }
}

/* --- MÓVILES (hasta 767.98px) --- */
@media (max-width: 767.98px) {
  /* Globales */
  :root { font-size: 14px; }
  .container { padding: 0 1.5rem; }

  /* Tipografía */
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.8rem; }
  .hero h1 { font-size: 2.5rem; }
  .page-intro h1 { font-size: 2.4rem; }

  /* Rejillas a una columna */
  .grid-destacado, .grid-marcas, .recomendaciones-grid-estatica,
  .guides-list-grid, .c-pillars-grid, .c-beats-grid, .c-liquid-grid,
  .c-typographic-grid, .c-glass-grid, .c-duel-grid,
  .c-savings-section__grid, .c-glosario-guia-grid { 
    grid-template-columns: 1fr;
  }
  .c-duel-separator { display: none; }

  /* Tablas comparativas */
  .comparador-columnas { overflow-x: auto; }
  .comparador-dual .c-overview-table { min-width: 100%; }
  .comparador-dual .c-overview-table thead { display: none; }
  .comparador-dual .c-overview-table tr {
    display: block;
    background-color: var(--color-superficie);
    border: 1px solid var(--color-borde);
    border-top: 3px solid var(--color-acento);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    padding: 1.25rem 1.5rem;
  }
  .comparador-dual .c-overview-table tr.fila-diferente { border-color: var(--color-acento); }
  .comparador-dual .c-overview-table td:first-child {
    display: block;
    text-align: left;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-texto-principal);
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-borde);
  }
  .comparador-dual .c-overview-table td:not(:first-child) {
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 0.75rem 0;
    font-size: 0.95rem;
    gap: 1rem;
  }
  .comparador-dual .c-overview-table td:not(:first-child):not(:last-of-type) {
    border-bottom: 1px dashed var(--color-borde);
  }
  .comparador-dual .c-overview-table td:not(:first-child)::before {
    content: attr(data-label);
    color: var(--color-texto-secundario);
    flex-basis: 45%;
    flex-shrink: 0;
  }
  .comparador-dual .c-overview-table td:not(:first-child) span {
    flex-basis: 55%;
    text-align: left;
  }

  /* Home */
  .c-intro-subtitle { max-width: 100%; padding: 0 1rem; }
  .c-intro-promise-item { padding-left: 0; padding-right: 0; }
  .c-triptych-container { gap: 2rem; }
  .c-flip-card { width: 90%; max-width: 300px; margin-left: auto; margin-right: auto; height: 320px; }
  .c-flip-card__front p { font-size: 1.4rem; }
  .c-flip-card__back-title { font-size: clamp(2rem, 10vw, 2.2rem); }
  .c-flip-card__category-list a { font-size: 0.95rem; padding: 0.6rem 0; }

  /* Header hamburguesa */
  .c-header__hamburger { display: block; }
  .c-header__nav {
    display: block;
    position: fixed;
    top: 0; right: 0;
    width: 300px; max-width: 90vw; height: 100vh;
    background-color: var(--color-superficie);
    border-left: 1px solid var(--color-borde);
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    padding-top: 5rem;
    z-index: 999;
    visibility: hidden;
  }
  body.nav-open .c-header__nav { transform: translateX(0); visibility: visible; }
  .c-header__menu { flex-direction: column; align-items: flex-start; }

  /* Formulario suscripción */
  .c-subscribe-form--modern {
    flex-direction: column;
    gap: 1rem;
    border-radius: 0;
    padding: 0;
    border: none;
    background: none;
    backdrop-filter: none;
  }
  .c-subscribe-form__input--modern {
    width: 100%;
    padding: 1rem 1.5rem;
    background-color: hsla(212, 29%, 11%, 0.4);
    border: 1px solid var(--color-borde);
    border-radius: 999px;
    min-width: 0; 
  }

  /* Marquesina */
  .c-marquee__track { animation-duration: 15s; }

  /* Apple Watch explainer */
  .c-watch-size-explainer { grid-template-columns: 1fr; gap: 1.5rem 0; text-align: center; }
  .c-watch-size-explainer__diagram { padding-right: 0; justify-content: center; }
  .c-watch-size-explainer__text { text-align: left; }

  /* Samsung animación móvil */
  .c-scan-animation-container h3,
  .c-scan-line { display: none; }
  .c-scan-animation-container { padding: 0; min-height: 0; }
  #samsung-grid-title {
    display: block;
    opacity: 1;
    transform: none;
    font-size: 2.2rem;
    margin: 0 auto 3rem auto;
    text-align: center;
  }

  /* MacBook vs iPad */
  .c-showdown-grid { align-items: start; }

  /* Botones finales comparativas */
  .c-botones-finales-comparador .fila-botones { gap: 0.7rem; }
  .c-botones-finales-comparador .btn { width: 100%; min-width: 0; }
}