/* ==========================================================================
   Adaptación a pantallas — PyCon Panamá 2026

   Todas las media queries del sitio viven aquí, ordenadas de mayor a menor
   ancho. Tres cortes, y solo tres:

     ≤ 1024px  tablet horizontal — el hero pasa a una columna
     ≤  768px  tablet y celular  — la navegación se convierte en menú
     ≤  480px  celular pequeño   — acciones a ancho completo

   El corte de 768px debe coincidir con el de js/main.js.
   ========================================================================== */


/* ==========================================================================
   ≤ 1024px — Tablet horizontal
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  /* La tarjeta del hero deja de competir con el titular y pasa a apoyarlo */
  .hero-card {
    max-width: 520px;
  }
}


/* ==========================================================================
   ≤ 768px — Tablet y celular
   ========================================================================== */

@media (max-width: 768px) {
  :root {
    --container-gutter: 20px;
  }

  /* --- Navegación como menú desplegable --------------------------------- */

  .nav-toggle {
    display: inline-flex;
  }

  /* El panel se superpone: no empuja el contenido de la página */
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    padding: var(--space-4) var(--container-gutter) var(--space-5);
    background: var(--surface);
    border-bottom: 1px solid var(--border-soft);
    box-shadow: var(--shadow-lg);
  }

  .site-nav.opened {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

  /* Cada opción es una fila completa y cómoda de tocar */
  .nav-list a,
  .submenu-toggle {
    width: 100%;
    min-height: 48px;
    padding: var(--space-3) var(--space-4);
    background: var(--accent-softer);
    font-size: var(--fs-base);
  }

  .submenu-toggle {
    justify-content: space-between;
  }

  /* El submenú se despliega en el flujo, indentado bajo su título */
  .submenu {
    position: static;
    display: none;
    margin-top: var(--space-2);
    padding: 0 0 0 var(--space-4);
    background: transparent;
    border: 0;
    box-shadow: none;
  }

  /* En móvil solo abre con toque, no al pasar el puntero */
  .nav-item-has-children:hover .submenu {
    display: none;
  }

  .nav-item-has-children.open .submenu {
    display: grid;
    gap: var(--space-2);
  }

  .submenu a {
    min-height: 48px;
    background: var(--accent-softer);
  }

  /* --- Contenido --------------------------------------------------------- */

  .card,
  .hero-card,
  .details-accordion details {
    padding: var(--space-5);
    border-radius: var(--radius-md);
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }

  /* Compensa el padding del área táctil para alinear los iconos al margen */
  .footer-social {
    margin-left: calc(var(--space-3) * -1);
  }

  /* --- Formularios en Móvil ----------------------------------------------- */

  .registro-layout,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .field input,
  .field select,
  .field textarea {
    font-size: 16px; /* Evita que los navegadores móviles hagan zoom y desplacen la pantalla */
  }

  /* Agenda: lectura vertical, la hora encima de cada sesión */
  .agenda-item .session-card {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2);
  }

  .agenda-time {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0 var(--space-2);
    padding: 0 0 0 var(--space-1);
  }

  .agenda-time span,
  .agenda-time small {
    display: inline;
    margin: 0;
  }

  .agenda-item--event .agenda-time {
    padding-top: 0;
  }

  .agenda-session {
    padding: var(--space-4);
  }

  .agenda-item--event .agenda-session {
    padding: var(--space-3) var(--space-4);
  }
}


/* ==========================================================================
   ≤ 480px — Celular pequeño
   ========================================================================== */

@media (max-width: 480px) {
  :root {
    --container-gutter: 16px;
  }

  /* Botones apilados a ancho completo: objetivos grandes, sin ambigüedad */
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .brand {
    font-size: var(--fs-sm);
  }

  .agenda-day-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .agenda-day-tab {
    justify-content: center;
    gap: var(--space-1);
    padding-inline: var(--space-2);
  }

  .agenda-session .session-title,
  .agenda-item .session-keynote .agenda-session .session-title {
    font-size: var(--fs-base);
  }

  .speaker-avatar,
  .agenda-item .session-keynote .speaker-avatar {
    width: 40px;
    height: 40px;
    font-size: 0.7rem;
  }

  .agenda-dialog-content {
    padding-inline: var(--space-4);
  }

  .speaker-profile .speaker-avatar {
    width: 48px;
    height: 48px;
  }
}


/* ==========================================================================
   Preferencias del usuario
   ========================================================================== */

@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;
  }

  .btn:hover,
  .card--link:hover,
  .feature-card-grid .card:hover,
  .feature-card-grid .venue-card:hover,
  .home-hero-card:hover,
  .sponsor-options .card:hover,
  .home-card-grid .card--link:hover .home-card-icon,
  .home-card-grid .card--link:focus-visible .home-card-icon,
  .feature-card-grid .card:hover .home-card-icon,
  .feature-card-grid .venue-card:hover .home-card-icon,
  .sponsor-options .card:hover .home-card-icon,
  .home-card-grid .card--link:hover .home-card-arrow,
  .home-card-grid .card--link:focus-visible .home-card-arrow,
  .home-card-grid .card--link:focus-visible {
    transform: none;
  }
}