/* ==========================================================================
   Academia Kernel — Hoja de estilos principal (css/styles.css)
   Tokens, layout responsive, componentes y accesibilidad
   ========================================================================== */

:root {
  /* Paleta principal */
  --color-navy: #1D2B53;
  --color-navy-hover: #0E1630;
  --color-crema: #FFF8EC;
  --color-celeste: #E4F3FF;
  --color-amarillo: #FFF0C7;
  --color-naranja: #FF8A3D;

  /* Colores de interfaz y acentos */
  --color-blanco: #FFFFFF;
  --color-cta: #FFC93C;
  --color-cta-hover: #FFBA08;
  --color-hero-card: #BFE3FF;
  --color-hero-shadow: #8FC7EE;
  --color-badge-mint: #D9F2E4;

  /* Textos (todos cumplen contraste WCAG AA >= 4.5:1 sobre crema/blanco/celeste/amarillo) */
  --color-text: #1D2B53;
  --color-text-muted: #3A4568;
  --color-text-subtle: #4A5578;
  --color-footer-text: #DCE2F2;

  /* Colores de acento por curso */
  --color-scratch: #FFC93C;
  --color-roblox: #FF8FA3;
  --color-pygame: #3CC47C;
  --color-python: #3776AB;
  --color-python-yellow: #FFD43B;
  --color-godot: #7FC4FF;
  --color-unity: #C9B6FF;

  /* Estados del formulario */
  --color-status-ok-bg: #D9F2E4;
  --color-status-ok-border: #1D2B53;
  --color-status-error-bg: #FFE3E3;
  --color-status-error-border: #B42318;
  --color-status-error-text: #7A1414;

  /* Tipografías */
  --font-display: 'Baloo 2', system-ui, -apple-system, sans-serif;
  --font-body: 'Nunito', system-ui, -apple-system, sans-serif;

  /* Bordes y sombras duras desplazadas */
  --border-thin: 2px solid var(--color-navy);
  --border-input: 2.5px solid var(--color-navy);
  --border-thick: 3px solid var(--color-navy);
  --shadow-sm: 3px 3px 0 var(--color-navy);
  --shadow-md: 4px 4px 0 var(--color-navy);
  --shadow-lg: 6px 6px 0 var(--color-navy);
  --shadow-xl: 8px 8px 0 var(--color-navy);

  /* Radios */
  --radius-sm: 14px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  /* Layout y espaciado (16px gutter en mobile, 24px en tablet/desktop) */
  --container-max: 1200px;
  --gutter: 16px;
}

@media (min-width: 768px) {
  :root {
    --gutter: 24px;
  }
}

/* ==========================================================================
   Base y Reset
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--color-crema);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: clip;
}

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
}

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

a {
  color: var(--color-navy);
  text-underline-offset: 3px;
  transition: color 0.15s ease, background-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

a:hover {
  color: var(--color-navy-hover);
}

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

summary {
  cursor: pointer;
}

/* ==========================================================================
   Utilidades de Contenedor y Tipografía
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.05;
  color: var(--color-navy);
}

.section-lead {
  margin: 0;
  font-size: 19px;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Botones y Chips
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 26px;
  border-radius: var(--radius-pill);
  border: var(--border-thick);
  box-shadow: var(--shadow-md);
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.2;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  color: var(--color-navy);
  background-color: var(--color-blanco);
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
  color: var(--color-navy);
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--color-navy);
}

.btn--primary {
  background-color: var(--color-cta);
  color: var(--color-navy);
}

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

.btn--secondary {
  background-color: var(--color-blanco);
  color: var(--color-navy);
}

.btn--secondary:hover {
  background-color: var(--color-amarillo);
}

.btn--inverse {
  background-color: var(--color-cta);
  color: var(--color-navy);
  border-color: var(--color-crema);
  box-shadow: 4px 4px 0 var(--color-crema);
  padding: 13px 22px;
  font-size: 16px;
}

.btn--inverse:hover {
  background-color: var(--color-cta-hover);
  box-shadow: 6px 6px 0 var(--color-crema);
}

.btn--inverse:focus-visible {
  outline-color: var(--color-cta);
}

.btn--sm {
  padding: 10px 20px;
  font-size: 16px;
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Aviso Superior
   ========================================================================== */

.top-banner {
  background-color: var(--color-navy);
  color: var(--color-crema);
  text-align: center;
  padding: 10px var(--gutter);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.4;
}

@media (min-width: 768px) {
  .top-banner {
    font-size: 15px;
  }
}

/* ==========================================================================
   Header Sticky y Navegación (Desktop + Mobile <details>)
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-crema);
  border-bottom: var(--border-thick);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  padding-bottom: 14px;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-navy);
  min-width: 0;
}

.brand__logo {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  color: var(--color-navy);
}

.brand__sub {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-subtle);
}

@media (min-width: 768px) {
  .brand__logo {
    width: 46px;
    height: 46px;
  }

  .brand__name {
    font-size: 26px;
  }
}

/* Links desktop */
.nav-links {
  display: none;
  align-items: center;
  gap: 6px;
}

.nav-link {
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-weight: 700;
  color: var(--color-navy);
}

.nav-link:hover {
  background-color: var(--color-amarillo);
}

.nav-cta {
  margin-left: 6px;
}

/* Menú mobile con <details> sin JS */
.nav-mobile {
  position: relative;
}

.nav-mobile__toggle {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background-color: var(--color-blanco);
  border: var(--border-thick);
  box-shadow: var(--shadow-sm);
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 15px;
  color: var(--color-navy);
  user-select: none;
}

.nav-mobile__toggle::-webkit-details-marker {
  display: none;
}

.nav-mobile__toggle:hover {
  background-color: var(--color-amarillo);
}

.nav-mobile[open] .nav-mobile__toggle {
  background-color: var(--color-cta);
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--color-navy);
}

.nav-mobile__icon {
  width: 20px;
  height: 20px;
}

.nav-mobile__panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: min(280px, calc(100vw - 32px));
  background-color: var(--color-blanco);
  border: var(--border-thick);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 110;
}

.nav-mobile__link {
  display: block;
  padding: 10px 14px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 800;
  color: var(--color-navy);
}

.nav-mobile__link:hover {
  background-color: var(--color-amarillo);
}

.nav-mobile__cta {
  margin-top: 4px;
  width: 100%;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }

  .nav-mobile {
    display: none;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  padding-top: 36px;
  padding-bottom: 64px;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 44px;
}

@media (min-width: 960px) {
  .hero {
    padding-top: 56px;
    padding-bottom: 88px;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.95fr);
    gap: 48px;
  }
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.hero__age-pill {
  align-self: flex-start;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background-color: var(--color-badge-mint);
  border: var(--border-thin);
  font-weight: 800;
  font-size: 14px;
  color: var(--color-navy);
}

.hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(38px, 6.2vw, 76px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--color-navy);
}

.hero__highlight {
  display: inline-block;
  margin-top: 4px;
  background-color: var(--color-cta);
  padding: 2px 12px;
  border-radius: var(--radius-sm);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.hero__lead {
  margin: 0;
  max-width: 540px;
  font-size: 19px;
  color: var(--color-text-muted);
}

@media (min-width: 768px) {
  .hero__lead {
    font-size: 20px;
  }
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding-top: 4px;
}

.hero__actions .btn {
  width: 100%;
}

@media (min-width: 520px) {
  .hero__actions .btn {
    width: auto;
  }
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 6px;
}

.tag-pill {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background-color: var(--color-blanco);
  border: var(--border-thin);
  font-weight: 700;
  font-size: 14px;
  color: var(--color-navy);
}

.hero__visual {
  display: flex;
  justify-content: center;
  min-width: 0;
  padding-top: 14px;
  padding-bottom: 14px;
}

.mascot-card-wrap {
  position: relative;
  width: 100%;
  max-width: 420px;
}

.mascot-card {
  background-color: var(--color-hero-card);
  border: var(--border-thick);
  border-radius: 36px;
  box-shadow: var(--shadow-xl);
  padding: 28px 20px 14px;
  display: flex;
  justify-content: center;
}

.mascot-svg {
  width: 100%;
  max-width: 330px;
  height: auto;
}

.mascot-badge {
  position: absolute;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: var(--border-thick);
  box-shadow: var(--shadow-md);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.2;
  color: var(--color-navy);
}

@media (min-width: 768px) {
  .mascot-badge {
    padding: 8px 16px;
    font-size: 18px;
  }
}

.mascot-badge--top {
  top: -16px;
  right: 4px;
  transform: rotate(5deg);
  background-color: var(--color-blanco);
}

.mascot-badge--bottom {
  bottom: -16px;
  left: 4px;
  transform: rotate(-4deg);
  background-color: var(--color-pygame);
}

/* ==========================================================================
   Franja de Herramientas
   ========================================================================== */

.tools-strip {
  background-color: var(--color-navy);
  color: var(--color-crema);
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.tools-strip__inner {
  padding-top: 20px;
  padding-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px 28px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
}

@media (min-width: 768px) {
  .tools-strip__inner {
    gap: 14px 36px;
    font-size: 22px;
  }
}

.tools-strip__star {
  color: var(--color-cta);
}

/* ==========================================================================
   Sección Cursos (Tarjetas parejas en alto y color/acento por curso)
   ========================================================================== */

.courses-section {
  padding-top: 72px;
  padding-bottom: 72px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

@media (min-width: 768px) {
  .courses-section {
    padding-top: 96px;
    padding-bottom: 84px;
    gap: 44px;
  }
}

.courses-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: stretch;
}

@media (min-width: 700px) {
  .courses-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: 1fr;
    gap: 28px;
  }
}

@media (min-width: 1080px) {
  .courses-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.course-card {
  --course-accent: var(--color-scratch);
  background-color: var(--color-blanco);
  border: var(--border-thick);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.course-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-xl);
}

.course-card--scratch {
  --course-accent: var(--color-scratch);
}

.course-card--roblox {
  --course-accent: var(--color-roblox);
}

.course-card--pygame {
  --course-accent: var(--color-python);
}

/* Azul Python: texto blanco para mantener contraste AA (4.84:1) */
.course-card--pygame .course-card__link {
  color: #FFFFFF;
}

.course-card--godot {
  --course-accent: var(--color-godot);
}

.course-card--unity {
  --course-accent: var(--color-unity);
}

.course-card__header {
  background-color: var(--course-accent);
  border-bottom: var(--border-thick);
  padding: 22px 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.course-card__icon {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}

.course-card__age {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background-color: var(--color-blanco);
  border: var(--border-thin);
  font-weight: 800;
  font-size: 14px;
  color: var(--color-navy);
  white-space: nowrap;
}

.course-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1 1 auto;
}

.course-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 28px;
  line-height: 1.1;
  color: var(--color-navy);
}

.course-card__desc {
  margin: 0;
  color: var(--color-text-muted);
}

.course-card__meta {
  margin: 0;
  margin-top: auto;
  padding-top: 10px;
  font-weight: 700;
  font-size: 15px;
  color: var(--color-text-subtle);
}

.course-card__link {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background-color: var(--course-accent);
  border: var(--border-thin);
  box-shadow: 2px 2px 0 var(--color-navy);
  font-weight: 800;
  font-size: 15px;
  text-decoration: none;
  color: var(--color-navy);
}

.course-card__link:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-md);
}

/* Tarjeta especial de recomendación */
.course-card--help {
  background-color: var(--color-navy);
  color: var(--color-crema);
  box-shadow: 6px 6px 0 var(--color-cta);
  padding: 28px;
  justify-content: center;
  gap: 16px;
}

.course-card--help:hover {
  box-shadow: 8px 8px 0 var(--color-cta);
}

.course-card--help .course-card__title {
  color: var(--color-crema);
}

.course-card--help .course-card__desc {
  color: var(--color-footer-text);
}

.course-card--help .btn {
  align-self: flex-start;
  margin-top: 4px;
}

/* ==========================================================================
   Sección "El camino" — Mapa de niveles (Vertical en mobile, Horizontal en desktop)
   ========================================================================== */

.roadmap-section {
  background-color: var(--color-celeste);
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.roadmap-section__inner {
  padding-top: 72px;
  padding-bottom: 72px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

@media (min-width: 768px) {
  .roadmap-section__inner {
    padding-top: 88px;
    padding-bottom: 88px;
    gap: 48px;
  }
}

.roadmap-map {
  margin: 0;
  padding: 0;
  list-style: none;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Línea conectora del mapa en mobile (vertical) */
.roadmap-map::before {
  content: "";
  position: absolute;
  top: 28px;
  bottom: 28px;
  left: 42px;
  width: 6px;
  background-color: var(--color-navy);
  border-radius: var(--radius-pill);
  z-index: 0;
}

.roadmap-step {
  --step-accent: var(--color-scratch);
  position: relative;
  z-index: 1;
  background-color: var(--color-blanco);
  border: var(--border-thick);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 16px;
}

.roadmap-step--1 { --step-accent: var(--color-scratch); }
.roadmap-step--2 { --step-accent: var(--color-roblox); }
.roadmap-step--3 { --step-accent: var(--color-python); }
.roadmap-step--3 .roadmap-step__badge { color: #FFFFFF; }
.roadmap-step--4 { --step-accent: var(--color-godot); }
.roadmap-step--5 { --step-accent: var(--color-unity); }

/* Flecha conectora entre niveles */
.roadmap-step:not(:last-child)::after {
  content: "↓";
  position: absolute;
  bottom: -21px;
  left: 33px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-amarillo);
  border: var(--border-thin);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 13px;
  line-height: 1;
  color: var(--color-navy);
  z-index: 2;
}

.roadmap-step__badge {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 50%;
  background-color: var(--step-accent);
  border: var(--border-thick);
  box-shadow: 2px 2px 0 var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  color: var(--color-navy);
}

.roadmap-step__content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.roadmap-step__label {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-subtle);
}

.roadmap-step__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-navy);
}

.roadmap-step__desc {
  margin: 0;
  font-size: 15px;
  color: var(--color-text-muted);
}

/* En desktop: mapa horizontal de 5 niveles conectados de izquierda a derecha */
@media (min-width: 900px) {
  .roadmap-map {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 22px;
    align-items: stretch;
  }

  .roadmap-map::before {
    top: 44px;
    bottom: auto;
    left: 48px;
    right: 48px;
    width: auto;
    height: 6px;
  }

  .roadmap-step {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
    gap: 10px;
  }

  .roadmap-step:not(:last-child)::after {
    content: "→";
    top: 32px;
    bottom: auto;
    left: auto;
    right: -25px;
  }
}

/* ==========================================================================
   Sección "Por qué aprender en Kernel"
   ========================================================================== */

.why-section {
  padding-top: 72px;
  padding-bottom: 72px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

@media (min-width: 768px) {
  .why-section {
    padding-top: 96px;
    padding-bottom: 96px;
    gap: 44px;
  }
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .why-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .why-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.why-card {
  background-color: var(--color-blanco);
  border: var(--border-thick);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.why-card__icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  border: var(--border-thick);
  box-shadow: 2px 2px 0 var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.why-card__icon--yellow { background-color: var(--color-scratch); }
.why-card__icon--pink { background-color: var(--color-roblox); }
.why-card__icon--green { background-color: var(--color-pygame); }
.why-card__icon--blue { background-color: var(--color-godot); }

.why-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-navy);
}

.why-card__desc {
  margin: 0;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Sección Familias / FAQ (<details> estilado)
   ========================================================================== */

.faq-section {
  background-color: var(--color-amarillo);
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.faq-section__inner {
  padding-top: 72px;
  padding-bottom: 72px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

@media (min-width: 900px) {
  .faq-section__inner {
    padding-top: 88px;
    padding-bottom: 88px;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.65fr);
    gap: 48px;
  }
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.faq-item {
  background-color: var(--color-blanco);
  border: var(--border-thick);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.faq-item:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-lg);
}

.faq-item[open] {
  box-shadow: var(--shadow-lg);
}

.faq-item__summary {
  list-style: none;
  padding: 18px 22px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.25;
  color: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-item__summary::-webkit-details-marker {
  display: none;
}

.faq-item__summary::after {
  content: "+";
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 50%;
  background-color: var(--color-cta);
  border: var(--border-thin);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  line-height: 1;
  color: var(--color-navy);
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.faq-item[open] .faq-item__summary {
  background-color: var(--color-celeste);
  border-bottom: var(--border-thin);
}

.faq-item[open] .faq-item__summary::after {
  content: "−";
  background-color: var(--color-naranja);
}

.faq-item__answer {
  margin: 0;
  padding: 16px 22px 20px;
  color: var(--color-text-muted);
}

.faq-item__answer p {
  margin: 0 0 12px;
}

.faq-item__answer p:last-child {
  margin-bottom: 0;
}

.faq-item__list {
  margin: 0 0 12px;
  padding-left: 20px;
  display: grid;
  gap: 6px;
}

.faq-item__list strong {
  color: var(--color-text);
}

/* ==========================================================================
   Sección Inscripción y Formulario (#k-form)
   ========================================================================== */

.signup-section {
  padding-top: 72px;
  padding-bottom: 80px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

@media (min-width: 900px) {
  .signup-section {
    padding-top: 96px;
    padding-bottom: 96px;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 48px;
  }
}

.signup-info {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.signup-info__contact {
  margin: 0;
  font-weight: 700;
}

.signup-form {
  background-color: var(--color-blanco);
  border: var(--border-thick);
  border-radius: 28px;
  box-shadow: var(--shadow-xl);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

@media (min-width: 768px) {
  .signup-form {
    padding: 32px;
  }
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 560px) {
  .form-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  }
}

.form-label {
  font-weight: 800;
  font-size: 16px;
  color: var(--color-navy);
}

.form-control {
  width: 100%;
  font: inherit;
  padding: 12px 16px;
  border: var(--border-input);
  border-radius: var(--radius-sm);
  background-color: var(--color-crema);
  color: var(--color-navy);
  transition: border-color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:hover {
  background-color: var(--color-blanco);
}

.form-control:focus-visible {
  background-color: var(--color-blanco);
  box-shadow: var(--shadow-sm);
}

/* Slot de Cloudflare Turnstile */
#k-turnstile {
  display: flex;
  justify-content: center;
  min-height: 0;
}

#k-turnstile:empty {
  display: none;
}

.form-submit {
  width: 100%;
}

/* Estado de éxito / error (#k-estado) */
#k-estado {
  margin: 0;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: var(--border-thin);
  background-color: var(--color-status-ok-bg);
  color: var(--color-navy);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.4;
}

#k-estado:empty {
  display: none;
}

#k-estado.ok,
#k-estado.exito,
#k-estado.success,
#k-estado.is-success,
#k-estado[data-estado="ok"],
#k-estado[data-estado="exito"],
#k-estado[data-status="ok"],
#k-estado[data-status="success"] {
  background-color: var(--color-status-ok-bg);
  border-color: var(--color-status-ok-border);
  color: var(--color-navy);
}

#k-estado.error,
#k-estado.is-error,
#k-estado[data-estado="error"],
#k-estado[data-status="error"] {
  background-color: var(--color-status-error-bg);
  border-color: var(--color-status-error-border);
  color: var(--color-status-error-text);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  margin-top: auto;
  background-color: var(--color-navy);
  color: var(--color-footer-text);
  border-top: var(--border-thick);
}

.site-footer__inner {
  padding-top: 40px;
  padding-bottom: 28px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
  font-size: 15px;
}

@media (min-width: 768px) {
  .site-footer__inner {
    padding-bottom: 40px;
  }
}

.site-footer__col {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-start;
}

.site-footer__brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 24px;
  color: var(--color-crema);
}

.site-footer__link {
  color: var(--color-crema);
  font-weight: 700;
}

.site-footer__link:hover {
  color: var(--color-cta);
}

.site-footer__link:focus-visible {
  outline-color: var(--color-cta);
}

.site-footer__accent-link {
  color: var(--color-cta);
  font-weight: 700;
}

.site-footer__accent-link:hover {
  color: var(--color-crema);
}

.site-footer__accent-link:focus-visible {
  outline-color: var(--color-cta);
}

/* Firma MarckTM: discreta, en tonos de la marca madre */
.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 24px;
  padding-bottom: 96px;
  font-size: 13px;
  color: rgba(220, 226, 242, 0.72);
}

@media (min-width: 768px) {
  .site-footer__inner {
    padding-bottom: 28px;
  }
  .site-footer__legal {
    padding-bottom: 28px;
  }
}

.mk-signature {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: color 0.18s ease;
}

.mk-signature strong {
  font-weight: 700;
  color: var(--color-footer-text);
}

.mk-signature__mark {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 6px;
  box-shadow: 0 0 0 1px rgba(220, 226, 242, 0.18);
}

.mk-signature:hover,
.mk-signature:hover strong {
  color: #FFFFFF;
}

.mk-signature:focus-visible {
  outline: 2px solid var(--color-cta);
  outline-offset: 4px;
  border-radius: 6px;
}

/* ==========================================================================
   Botón flotante de WhatsApp en mobile
   ========================================================================== */

.whatsapp-fab {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 95;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: var(--radius-pill);
  background-color: var(--color-pygame);
  color: var(--color-navy);
  border: var(--border-thick);
  box-shadow: var(--shadow-md);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1;
  text-decoration: none;
}

.whatsapp-fab:hover {
  background-color: var(--color-cta);
  color: var(--color-navy);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}

.whatsapp-fab__icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .whatsapp-fab {
    display: none;
  }
}

/* ==========================================================================
   Accesibilidad: prefers-reduced-motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}