/* ====================================================================
   COMPONENTS.CSS — THINKCHIP
   Componentes globales reutilizables en todas las páginas.
   ────────────────────────────────────────────────────────────────────
   4.3   Cabecera (.c-header)
   4.4   Pie de Página (.c-footer)
   4.5   Miga de Pan (.c-breadcrumb)
   4.6   Acordeón FAQs (.c-faq)
   4.7   Formulario Suscripción (wrapper + input)
   4.8   Glosario (página cuadrícula)
   4.9   Tarjeta de Información (.c-info-card)
   4.9.2 Tarjeta Unificada para Guías (.guide-card)
   4.10  Tabla Comparativa HUD (.c-overview-table)
   4.11  Tarjeta de Guía de Producto (.c-guia)
         Badge (.badge) · Tarjeta Recomendación (.c-recommendation-card)
         Fecha Actualización (.c-last-updated) · Autor (.c-author-byline)
         Tabla de Contenidos (.c-toc)
==================================================================== */

/* ====================================================================
   4.3 - Cabecera Principal
==================================================================== */
.c-header {
  background: rgba(16, 25, 42, 0.58);
  backdrop-filter: blur(11px);
  -webkit-backdrop-filter: blur(11px);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(124, 152, 190, 0.35);
}
.c-header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}
.c-header__title {
  font-family: "Tomorrow", monospace;
  font-weight: 500;
  font-size: 1.8rem;
  margin: 0;
}
.c-header__logo {
  color: var(--color-texto-principal);
  text-decoration: none;
}
.c-header__menu {
  list-style: none;
  display: flex;
  gap: 1rem;
  align-items: center;
  margin: 0;
  padding: 0;
}
.c-header__menu-item {
  position: relative;
}
.c-header__menu-link {
  color: var(--gris-300);
  text-decoration: none;
  font-weight: 500;
  padding: 0.55rem 1rem;
  display: block;
  transition: color 0.3s ease, background-color 0.3s ease;
  border-radius: 8px;
}
.c-header__menu-link:hover,
.c-header__menu-link.active {
  color: var(--color-texto-principal);
  background-color: hsla(0, 0%, 100%, 0.05);
}
.c-header__dropdown {
  display: block;
  position: absolute;
  top: 120%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-superficie);
  border: 1px solid var(--color-borde);
  border-radius: 10px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
  min-width: 200px;
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.2s, top 0.2s ease;
  padding: 0.5rem;
}
.c-header__menu-item--has-dropdown:hover .c-header__dropdown {
  opacity: 0.98;
  visibility: visible;
  top: 100%;
}
.c-header__dropdown-item {
  list-style: none;
}
.c-header__dropdown-link {
  display: block;
  padding: 0.7rem 1.2rem;
  color: var(--color-texto-secundario);
  text-decoration: none;
  font-weight: 500;
  white-space: nowrap;
  border-radius: 4px;
  transition: background-color 0.2s, color 0.2s;
}
.c-header__dropdown-link:hover {
  background-color: var(--color-acento);
  color: #fff;
}
.c-header__hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}
.c-header__hamburger-bar {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--color-texto-principal);
  margin: 5px 0;
  transition: all 0.3s ease-in-out;
}

/* ====================================================================
   4.4 - Pie de Página
==================================================================== */
.c-footer {
  background-color: var(--color-superficie);
  color: var(--color-texto-secundario);
  text-align: center;
  padding: 3rem 1rem;
  margin-top: 4rem;
}
.c-footer a {
  color: var(--color-texto-secundario);
  text-decoration: none;
  transition: color 0.3s ease;
}
.c-footer a:hover {
  color: var(--color-acento);
}
.c-footer__legal {
  margin-top: 2rem;
  font-size: 0.8rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.c-footer__nav-separator {
  margin: 0 0.5rem;
}

/* ====================================================================
   4.5 - Miga de Pan
==================================================================== */
.c-breadcrumb {
  font-size: 0.85rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-borde);
}
.c-breadcrumb__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}
.c-breadcrumb__item {
  display: flex;
  align-items: center;
}
.c-breadcrumb__item:not(:last-child)::after {
  content: '>';
  margin: 0 0.75rem;
  color: var(--color-texto-secundario);
}
.c-breadcrumb__link {
  color: var(--color-texto-secundario);
  text-decoration: none;
  transition: color 0.2s ease;
}
.c-breadcrumb__link:hover {
  color: var(--color-acento);
}
.c-breadcrumb__current {
  color: var(--color-texto-principal);
  font-weight: 500;
}

/* ====================================================================
   4.6 - Acordeón de FAQs
==================================================================== */
.c-faq {
  margin-top: 4rem;
  max-width: 1150px;
  margin-left: auto;
  margin-right: auto;
}

/* Título unificado — especificidad 0-2-0 para ganar sobre .guia-articulo h2 (0-1-1) */
.c-faq .c-faq__title {
  font-family: var(--fuente-titulos);
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 700;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-texto-principal);
  margin: 0 0 2rem 0;
  padding: 0;
}

.c-faq__item {
  background: transparent;
  border-bottom: 1px solid var(--color-borde);
  padding: 1rem 0;
}
.c-faq__item:first-of-type {
  border-top: 1px solid var(--color-borde);
}
.c-faq__question {
  padding: 0.5rem 0;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-texto-principal);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s ease;
}
.c-faq__question:hover {
  color: var(--color-acento);
}
.c-faq__question::-webkit-details-marker {
  display: none;
}
.c-faq__question::after {
  content: '+';
  font-size: 2rem;
  font-weight: 300;
  color: var(--color-texto-secundario);
  transition: transform 0.3s ease-in-out, color 0.2s ease;
}
.c-faq__item[open] > .c-faq__question::after {
  content: '−';
  transform: rotate(180deg);
  color: var(--color-acento);
}
.c-faq__answer {
  padding: 1rem 0 0.5rem 0;
  color: var(--color-texto-secundario);
  line-height: 1.7;
}
.c-faq__answer p {
  margin: 0 0 0.75rem 0;
  color: var(--color-texto-secundario);
  line-height: 1.7;
  font-size: 1rem;
}
.c-faq__answer p:last-child {
  margin-bottom: 0;
}
.c-faq__answer a {
  color: var(--color-acento);
  text-decoration: none;
  font-weight: 500;
}
.c-faq__answer a:hover {
  color: #fff;
}
.c-faq__answer strong {
  color: var(--color-texto-principal);
  font-weight: 600;
}

/* ====================================================================
   4.7 - Formulario de Suscripción (wrapper + input; botón → ver buttons.css)
==================================================================== */
.c-suscripcion-box {
  text-align: center;
  background-color: var(--color-superficie);
  border-radius: 16px;
  padding: 3rem 2rem;
  margin-top: 4rem;
}
.c-subscribe-form--modern {
  display: flex;
  align-items: center;
  max-width: 500px;
  margin: 2rem auto 0 auto;
  padding: 0.5rem 0.75rem;
  background-color: hsla(212, 29%, 11%, 0.4); 
  backdrop-filter: blur(5px);
  border: 1px solid var(--color-borde);
  border-radius: 999px; 
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.c-subscribe-form--modern:focus-within {
  border-color: var(--color-acento);
  box-shadow: 0 0 15px hsla(212, 100%, 50%, 0.3);
}
.c-subscribe-form__input--modern {
  flex-grow: 1;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  color: var(--color-texto-principal);
  background: transparent;
  border: none;
  outline: none; 
}
.c-subscribe-form__input--modern::placeholder {
  color: var(--color-texto-secundario);
}

/* ====================================================================
   4.8 - Glosario (Página Cuadrícula)
==================================================================== */
.c-glosario-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem; 
    margin-top: 3rem;
}
.c-glosario-item {
    background-color: hsla(0, 0%, 100%, 0.03);
    text-align: center;
    border: 1px solid var(--color-borde);
    border-radius: 12px;
    padding: 2rem;
    display: flex; 
    flex-direction: column;
    transition: transform 0.3s ease, border-color 0.3s ease;
}
.c-glosario-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-acento);
}
.c-glosario-item__term {
    font-family: var(--fuente-titulos);
    font-size: 1.3rem;
    color: var(--color-texto-principal);
    margin: 0 0 0.5rem 0;
}
.c-glosario-item__definition {
    color: var(--color-texto-secundario);
    line-height: 1.6;
    margin: 0;
    flex-grow: 1;
}

/* ====================================================================
   4.9 - Tarjeta de Información (.c-info-card)
==================================================================== */
.c-info-card {
  background-color: hsla(0, 0%, 100%, 0.03);
  border: 1px solid var(--color-borde);
  border-radius: 12px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
  color: var(--color-texto-principal);
  text-decoration: none;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  height: 100%; 
}
.c-info-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-acento);
  box-shadow: 0 10px 30px -10px hsla(212, 100%, 50%, 0.3);
}
.c-info-card__title {
  text-transform: uppercase;
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  margin: 0 0 .5rem 0;
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.c-info-card__text {
  flex-grow: 1; 
  color: var(--color-texto-secundario);
  font-family: var(--fuente-principal);
  font-size: 1rem;
  margin: 0 0 0.5rem 0;
  line-height: 1.6;
  text-align: center;
  font-weight: 500;  
}
.c-info-card__link {
  color: var(--color-acento);
  text-decoration: none;
  font-weight: bold;
  margin-top: auto;
  align-self: center; 
  transition: color 0.3s ease;
}
.c-info-card__link:hover {
  color: #fff;
}
.c-info-card__arrow {
  display: inline-block;
  transition: transform 0.2s ease-in-out;
}
.c-info-card__link:hover .c-info-card__arrow {
  transform: translateX(5px);
}
.c-info-card__icon-feature {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--color-acento);
    display: block;
    text-align: center;
}
.c-info-card--transparent {
  background-color: hsla(212, 29%, 11%, 0.4); 
  backdrop-filter: blur(5px);
}
.c-info-card--transparent:hover {
  transform: scale(1.03);
  border-color: var(--color-acento);
}
.texto-verde {
    color: var(--color-exito);
    font-weight: 700;
}

/* Overrides específicos para sección Pixel 10 essentials */
#pixel10-essentials .c-info-card {
  position: relative;
  overflow: hidden;
}
#pixel10-essentials .c-info-card::before{
  content:"";
  position:absolute; inset:0 0 auto 0; height:6px; opacity:.65;
}
#pixel10-essentials .is-camara::before   { background: linear-gradient(90deg,#f472b6,#fb7185); }
#pixel10-essentials .is-pantalla::before { background: linear-gradient(90deg,#60a5fa,#38bdf8); }
#pixel10-essentials .is-bateria::before  { background: linear-gradient(90deg,#34d399,#10b981); }
#pixel10-essentials .is-ia::before       { background: linear-gradient(90deg,#a78bfa,#8b5cf6); }
#pixel10-essentials .is-seguridad::before{ background: linear-gradient(90deg,#93c5fd,#60a5fa); }
#pixel10-essentials .is-camara   .c-info-card__title { color:#f8a6c5; }
#pixel10-essentials .is-pantalla .c-info-card__title { color:#8ecbff; }
#pixel10-essentials .is-bateria  .c-info-card__title { color:#6ee7b7; }
#pixel10-essentials .is-ia       .c-info-card__title { color:#c4b5fd; }
#pixel10-essentials .is-seguridad .c-info-card__title{ color:#a7d8ff; }
#pixel10-essentials ul{ list-style:none; margin:0; padding:0; }
#pixel10-essentials li{
  background: rgba(255,255,255,.05);
  padding:.8rem 1rem; border-radius:10px; margin-bottom:.8rem;
  line-height:1.6; transition:transform .2s ease, background .2s ease;
}
#pixel10-essentials li:hover{ background:rgba(255,255,255,.08); transform:translateX(4px); }
#pixel10-essentials .c-info-card__title{
  display:flex; align-items:center; gap:.5rem; margin-bottom:.75rem;
}
#pixel10-essentials p, 
#pixel10-essentials li { font-size:.97rem; }
@media (min-width: 1024px){
  #pixel10-essentials .grid-destacado{ 
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 720px) and (max-width: 1023px){
  #pixel10-essentials .grid-destacado{ 
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ====================================================================
   4.9.2 - Tarjeta Unificada para Guías (.guide-card)
==================================================================== */
.guide-card {
    background-color: var(--color-superficie);
    border: 1px solid var(--color-borde);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    height: 100%;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative; 
    overflow: hidden;   
}
.guide-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}
.guide-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -150%; 
    width: 70%;
    height: 100%;
    background: linear-gradient(
        to right, 
        transparent 0%, 
        hsla(0, 0%, 100%, 0.1) 50%,
        transparent 100%
    );
    transform: skewX(-25deg); 
    transition: left 0.5s ease-in-out; 
    z-index: 1;
}
.guide-card:hover::before {
    left: 150%;
}
.guide-card__header {
    padding: 1.5rem;
}
.guide-card__title {
    font-size: 1.4rem;
    margin: 0 0 0.25rem 0;
    color: var(--color-texto-principal);
}
.guide-card__model {
    margin: 0;
    color: var(--color-texto-secundario);
    font-style: italic;
}
.guide-card__body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.guide-card__specs {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
    color: var(--color-texto-secundario);
    font-size: 0.95rem;
}
.guide-card__spec-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    text-align: left;
    border-bottom: 1px solid var(--color-borde);
}
.guide-card__spec-item:last-child {
    border-bottom: none;
}
.guide-card__verdict-title {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-texto-principal);
    margin: 1rem 0 0.5rem 0;
}
.guide-card__verdict-text {
    font-size: 0.95rem;
    line-height: 1.6;
    flex-grow: 1;
    text-align: justify;
    color: var(--color-texto-secundario);
}
.guide-card__features-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0 0;
  font-size: 0.9rem;
  text-align: left;
}
.guide-card__features-list li {
  margin-bottom: 0.5rem;
  padding-left: 1.75rem;
  position: relative;
}
.guide-card__features-list li::before {
  position: absolute;
  left: 0;
  top: 2px;
  font-weight: bold;
  font-size: 1.1em;
}
.guide-card__features-list li.pro::before {
  content: '✓';
  color: var(--color-exito);
}
.guide-card__features-list li.contra::before {
  content: '✗';
  color: var(--color-error);
}
.guide-card__footer {
    padding: 1.5rem;
    margin-top: auto;
    border-top: 1px solid var(--color-borde);
}
.c-botones-finales-comparador .fila-botones {
  display:flex;
  justify-content:center;
  gap:1rem;
  margin-bottom:1rem;
}

/* ====================================================================
   4.10 - Tabla Comparativa "HUD" (.c-overview-table)
==================================================================== */
.c-overview-table {
  width: 100%;
  min-width: 1000px;
  border-collapse: separate;
  border-spacing: 0;
  background-color: hsla(212, 29%, 11%, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 10px;
  border: 0px solid hsla(210, 10%, 23%, 0.5); 
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  padding: 0 1rem;
  overflow: hidden;
}
.c-overview-table__heading,
.c-overview-table__cell {
  padding: 1.25rem 1rem;
  border: none;
  background-image: linear-gradient(to right, transparent, var(--color-borde), transparent);
  background-repeat: no-repeat;
  background-position: bottom;
  background-size: 100% 1px;
  text-align: center;
  vertical-align: middle;
  position: relative;
}
.c-overview-table__body tr:last-child td {
  background-image: none;
}
.c-overview-table__body tr:nth-child(even) {
  background-color: hsla(0, 0%, 100%, 0.02);
}
.c-product-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end; 
  text-align: center;
  min-height: 220px;
  height: 100%;
  padding: 1rem 0;
}
.c-product-header__name {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.25rem;
  min-width: 150px;
}
.c-product-header > .etiqueta,
.c-product-header__label-wrapper {
  min-height: 3em;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.25rem;
}
.c-product-header__image {
  max-height: 140px;
  margin-top: 0.5rem;
}
.c-overview-table__cell--feature,
.c-overview-table__header .c-overview-table__heading:first-child {
  position: sticky;
  left: 0;
  background-color: hsla(212, 45%, 7%, 0.8);
  border-right: 1px solid var(--color-borde);
}
.c-overview-table__header .c-overview-table__heading:first-child { z-index: 2; }
.c-overview-table__cell--feature { z-index: 1; text-align: left; font-weight: 600; color: var(--color-texto-secundario); }
.c-overview-table__header .c-overview-table__heading:not(:first-child) {
  vertical-align: bottom;
}
.c-overview-table:hover .c-overview-table__body td,
.c-overview-table:hover .c-overview-table__body th {
  opacity: 0.5;
  transition: opacity 0.3s ease;
}
.c-overview-table:hover .c-overview-table__body tr:hover td,
.c-overview-table:hover .c-overview-table__body tr:hover th {
  opacity: 1;
}
.c-overview-table .highlight {
  background-color: hsla(212, 100%, 50%, 0.1) !important;
  opacity: 1 !important;
}
.c-overview-table .highlight .c-product-header__image {
    transform: scale(1.05);
}

/* ====================================================================
   4.11 - Tarjeta de Guía de Producto (.c-guia)
==================================================================== */
.c-guia{
  background-color: hsla(0,0%,100%,.03);
  border: 1px solid var(--color-borde);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
}
.c-guia__header{
  text-align: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--color-borde);
}
.c-guia__modelo{ margin: 0; color: var(--color-texto-secundario); }
.c-guia__imagen{ max-height: 150px; margin-top: 1rem; }
.c-guia__body{
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  flex: 1 1 auto;  
}
.c-guia__body p{
  color: var(--color-texto-secundario);
  font-size: 1rem;
  line-height: 1.6;
  text-align: center;
  margin: 0; 
}
.c-guia__footer{
  padding: 1.5rem;
  margin-top: auto;
  border-top: 1px solid var(--color-borde);
  text-align: center;
}
.c-guia__boton{ display:block; width:100%; }
.c-guia__features-list{
  list-style: none;
  padding: 0;
  margin: 1rem 0 0 0;
  font-size: .9rem;
  text-align: left;
}
.c-guia__features-list li{
  position: relative;
  margin-bottom: .5rem;
  padding-left: 1.75rem;
}
.c-guia__features-list li::before{
  position: absolute;
  left: 0;
  top: 2px;
  font-weight: 700;
  font-size: 1.1em;
  content: '';      
}
.c-guia__features-list li.pro::before{
  content: '✓';
  color: var(--color-exito);
}
.c-guia__features-list li.contra::before{
  content: '✗';
  color: var(--color-error);
}

/* ====================================================================
   Badge, Tarjeta Recomendación y overrides c-guia para Google/Pixel
==================================================================== */
.c-recommendation-card{
  border:1px solid var(--color-borde);
  border-radius:16px;
  background: hsla(0,0%,100%,.02);
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  overflow:hidden;
}
.c-guia__titulo{
  font-family: var(--fuente-logos);
  font-size:1.15rem;
  margin:0 0 .25rem;
}
.c-guia__boton.btn{ width:100%; }
.badge{
  display:inline-block;
  padding:.25rem .6rem;
  border-radius:999px;
  font-size:.75rem;
  letter-spacing:.02em;
  border:1px solid var(--color-borde);
  color: var(--gris-200);
  margin-left:.5rem;
  vertical-align: middle;
}
.badge--google{ border-color: var(--color-marca-google-blue); }
.c-guia__features-list li.pro::before{
  filter: drop-shadow(0 0 6px rgba(66,133,244,.25));
}
.c-guia__features-list li.contra::before{
  filter: drop-shadow(0 0 6px rgba(234,67,53,.25));
}

/* Variantes de texto iPad/Beats */
.c-info-card__title__ipad{
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.1rem; 
  font-size: 1.1rem;
  color: var(--color-texto-principal);
}
.c-info-card__text__ipad{
  text-align: center;
  color: var(--color-texto-secundario);
  font-family: var(--fuente-principal);
  font-size: 1rem;
  line-height: 1.6;
  font-weight: 500;
}
.c-info-card .c-info-card__text__ipad,
.c-recommendation-card .c-guia__veredicto-texto {
  color: var(--color-texto-secundario);
  font-family: var(--fuente-principal);
  font-size: 1rem;
  line-height: 1.6;
  font-weight: 500;
}

/* ====================================================================
   Fecha de Última Actualización y Author Byline
==================================================================== */
.c-last-updated {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--color-texto-secundario);
  margin-bottom: 1.5rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--color-borde);
  border-radius: 6px;
  background-color: hsla(0, 0%, 100%, 0.03);
}
.c-author-byline {
  display: none;
}

/* ====================================================================
   Tabla de Contenidos (.c-toc)
==================================================================== */
.c-toc {
  background-color: hsla(212, 29%, 11%, 0.5);
  border: 1px solid var(--color-borde);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 2rem auto;
  max-width: 800px;
}
.c-toc__details {
  outline: none;
}
.c-toc__summary {
  font-family: var(--fuente-titulos);
  font-size: 1.2rem;
  color: var(--color-texto-principal);
  cursor: pointer;
  text-transform: uppercase;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.c-toc__summary::-webkit-details-marker {
  display: none;
}
.c-toc__summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  transition: transform 0.3s ease;
}
.c-toc__details[open] .c-toc__summary::after {
  content: '−';
}
.c-toc__list {
  list-style: none;
  padding: 1rem 0 0 0;
  margin: 0;
  columns: 1;
}
@media (min-width: 768px) {
  .c-toc__list {
    columns: 2;
    column-gap: 2rem;
  }
}
.c-toc__item {
  margin-bottom: 0.75rem;
  page-break-inside: avoid;
  break-inside: avoid;
}
.c-toc__link {
  color: var(--color-texto-secundario);
  text-decoration: none;
  transition: color 0.2s ease;
  display: inline-block;
  line-height: 1.4;
  border-bottom: 1px dashed transparent;
}
.c-toc__link:hover {
  color: var(--color-acento);
  border-bottom-color: var(--color-acento);
}