/* ============================================================
   4 - RESPONSIVE - breakpoints (cargar SIEMPRE al ultimo)
   ============================================================
   Ajustes por tamano de pantalla, modo app en movil y
   accesibilidad (prefers-reduced-motion).
   ============================================================ */

/* ---------- Móvil: botones y toques más grandes ---------- */
@media (max-width: 639px) {
  .btn { min-height: 52px; padding: 15px 26px; font-size: 14px; }
  .btn-sm { min-height: 44px; padding: 11px 18px; font-size: 12px; }
  .top-cta { min-height: 40px; }
  .time-chip { padding: 13px 16px; font-size: 14px; min-height: 50px; }
  .date-field { padding: 14px 15px; }
  .book-svc { padding: 14px 15px; }
  .svc-btn { padding: 12px 22px; font-size: 12.5px; }
  .step-actions { flex-direction: column; }
  .step-actions .btn { width: 100%; }
  .app-screen { padding-bottom: calc(var(--tabbar-h) + 84px); }
  .tab span { font-size: 10.5px; }
  .demo-banner { font-size: 11px; padding: 8px 12px; }
}

@media (min-width: 640px) {
  .nav-link { display: none; }
  .hub { grid-template-columns: repeat(3, 1fr); }
  .about { grid-template-columns: 1fr 1fr; }
  .about-txt { text-align: left; }
  .about-txt .section-title, .about-txt .eyebrow { text-align: left; justify-content: flex-start; }
  .about-txt .eyebrow::after { display: none; }
  .about-txt p:not(.eyebrow) { margin-inline: 0; }
  .about-list { margin-inline: 0; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .book-group { grid-template-columns: repeat(2, 1fr); grid-column: 1 / -1; }
  .book-group-title { grid-column: 1 / -1; }
  .field-grid { grid-template-columns: repeat(2, 1fr); }
  .field.full { grid-column: 1 / -1; }
  .ns-grid { grid-template-columns: repeat(3, 1fr); }
  .visit-card { flex-direction: row; align-items: center; justify-content: space-between; }
  .footer-inner { flex-direction: row; align-items: center; justify-content: space-between; }
  .footer { padding-bottom: 46px; }
  .modal-back { align-items: center; }
  .modal { max-width: 600px; border-radius: 26px; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .booking-card { padding: 32px; }
}

@media (min-width: 900px) {
  .topnav { display: flex; }
  .top-cta { padding: 11px 22px; font-size: 13.5px; }
  .tabbar { display: none; }
  .app-screen { padding-bottom: 70px; }
  .toasts { bottom: 26px; }
  .hero { min-height: 100vh; }
  .brand-t1 { font-size: 18px; }
  .dash-stats { grid-template-columns: 220px 220px 220px; }
  .admin-list { grid-template-columns: 1fr 1fr; }
  .hero-stats { margin-top: 70px; }
}

@media (min-width: 1200px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1.1fr 1fr 1fr; }
}

/* ---------- Accesibilidad / preferencia de movimiento ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .marquee-track { animation-duration: 60s !important; animation-iteration-count: infinite !important; }
}

@media (min-width: 640px) {
  .kp-grid { grid-template-columns: repeat(3, 1fr); }
  .dash-cols.c2 { grid-template-columns: 1.4fr 1fr; }
  .dash-cols.c3 { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 900px) {
  .admin-shell { grid-template-columns: 215px 1fr; align-items: start; }
  .admin-side { flex-direction: column; position: sticky; top: 90px; align-self: start; }
}
@media (min-width: 1100px) {
  .kp-grid { grid-template-columns: repeat(6, 1fr); }
  .dash-cols.c3 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 899px) {
  body.admin-mode .tabbar { display: none; }
  body.admin-mode .admin-side {
    position: fixed; left: 0; right: 0; bottom: 0; top: auto; z-index: 70;
    display: flex; flex-direction: row; align-items: stretch;
    padding: 8px calc(8px + env(safe-area-inset-bottom)) 0 8px;
    height: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
    background: var(--tabbar-bg);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
    backdrop-filter: blur(22px) saturate(150%);
    border-radius: 0; border: 0; border-top: 1px solid var(--glass-brd);
    overflow-x: auto;
  }
  body.admin-mode .adm-nav {
    flex: 1 0 auto; flex-direction: column; justify-content: center;
    gap: 5px; padding: 6px 10px; border-radius: 13px;
    font-size: 8.5px; letter-spacing: .12em; text-transform: uppercase;
  }
  body.admin-mode .adm-nav svg { width: 22px; height: 22px; }
  body.admin-mode .admin-shell { padding-bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 24px); }
  body.admin-mode .dash-head { margin-top: 18px; }
}