/* =============================================================
   LAYOUT — Estructura global: barra de anuncio, header, footer
   ============================================================= */

/* ---------- Barra de anuncio ---------- */
.announce {
  background: var(--grad-dark);
  color: #fbf9f9;
  text-align: center;
  font-size: .875rem;
  font-weight: 500;
  padding: .6rem var(--gutter);
}
.announce strong { color: var(--brand-teal); }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .96);
  /* Nota: NO usar backdrop-filter aquí: crea un "containing block" que
     rompe el position:fixed del menú móvil (.nav). */
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.header.is-scrolled {
  border-color: var(--line);
  box-shadow: var(--shadow-sm);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 74px;
}
.header__logo img { height: 40px; width: auto; }

.nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}
.nav a {
  font-size: .93rem;
  font-weight: 600;
  color: var(--purple-900);
  position: relative;
  padding: .25rem 0;
  transition: color .2s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--grad-brand);
  transition: width .25s var(--ease);
}
.nav a:hover { color: var(--brand-purple); }
.nav a:hover::after { width: 100%; }

.header__actions { display: flex; align-items: center; gap: .75rem; }

/* Botón X para cerrar el menú móvil (oculto en escritorio) */
.nav__close { display: none; }

/* Botón hamburguesa (móvil) */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  place-items: center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 22px; height: 2px;
  background: var(--purple-900);
  border-radius: 2px;
  transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.nav-toggle span::before { transform: translateY(-7px); }
.nav-toggle span::after  { transform: translateY(5px); }
.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { transform: rotate(45deg); }
.nav-toggle.is-open span::after  { transform: rotate(-45deg); }

/* ---------- Footer ---------- */
.footer {
  background: var(--grad-dark);
  color: rgba(255, 255, 255, .78);
  padding-block: clamp(3rem, 6vw, 4.5rem) 2rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1.1fr .9fr 1.4fr;
  gap: 2.5rem;
}
.footer__logo img { height: 38px; margin-bottom: 1.1rem; }
.footer__blurb { font-size: .92rem; color: rgba(255, 255, 255, .7); max-width: 34ch; }

.footer__contact { display: grid; gap: .6rem; font-size: .9rem; }
.footer__contact a, .footer__contact span { color: rgba(255, 255, 255, .82); display: flex; gap: .55rem; }
.footer__contact a:hover { color: var(--brand-teal); }

.footer__social { margin-top: 1.5rem; display: flex; gap: .6rem; }
.footer__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .2);
  color: rgba(255, 255, 255, .82);
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.footer__social a:hover {
  color: #fff;
  border-color: var(--brand-teal);
  background: rgba(56, 217, 211, .12);
}
.footer__social svg { width: 19px; height: 19px; }

.footer__col h4 { color: #fff; font-size: .95rem; margin-bottom: 1rem; letter-spacing: .02em; }
.footer__col ul { display: grid; gap: .6rem; }
.footer__col a { font-size: .9rem; color: rgba(255, 255, 255, .72); transition: color .2s var(--ease); }
.footer__col a:hover { color: var(--brand-teal); }

.footer__bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, .12);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: .82rem;
  color: rgba(255, 255, 255, .6);
}

/* ---------- Botón flotante de WhatsApp (avatar + pastilla) ---------- */
.wa-widget {
  position: fixed;
  right: 1.25rem; bottom: 1.25rem;
  z-index: 60;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}
.wa-widget__avatar {
  width: 118px; height: 132px;
  border-radius: 20px;
  object-fit: cover;
  object-position: 50% 18%;      /* enfoca la cara y el torso del doctor */
  filter: drop-shadow(0 10px 20px rgba(30, 18, 51, .18));
  margin: 0 6px -16px auto;      /* se apoya sobre la pastilla, alineado a la derecha */
  position: relative; z-index: 1;
  pointer-events: none;
  transition: transform .3s var(--ease);
  animation: wa-bob 3.6s ease-in-out infinite;
}
.wa-widget__btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: #25d366;
  color: #fff;
  padding: .38rem 1rem .38rem .4rem;   /* más delgado */
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 24px rgba(37, 211, 102, .4);
  font-weight: 700;
  letter-spacing: .02em;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
  animation: wa-pulse 2.4s infinite;
}
/* Al pasar el cursor por el widget: el doctor se asoma y el botón crece */
.wa-widget:hover .wa-widget__btn { transform: translateY(-2px) scale(1.03); }
.wa-widget__icon {
  width: 1.8rem; height: 1.8rem;
  border-radius: 50%;
  background: #fff;
  display: grid; place-items: center;
  flex: 0 0 auto;
}
.wa-widget__icon svg { width: 1.1rem; height: 1.1rem; fill: #25d366; }
.wa-widget__text { font-size: .88rem; }

/* Animaciones para llamar la atención */
@keyframes wa-bob {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
@keyframes wa-pulse {
  0%   { box-shadow: 0 10px 24px rgba(37, 211, 102, .4), 0 0 0 0 rgba(37, 211, 102, .5); }
  70%  { box-shadow: 0 10px 24px rgba(37, 211, 102, .4), 0 0 0 16px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 10px 24px rgba(37, 211, 102, .4), 0 0 0 0 rgba(37, 211, 102, 0); }
}
@media (prefers-reduced-motion: reduce) {
  .wa-widget__avatar, .wa-widget__btn { animation: none; }
}

/* En móvil: solo ícono + avatar (oculta el texto para no ocupar tanto) */
@media (max-width: 520px) {
  .wa-widget__avatar { width: 96px; height: 108px; margin-bottom: -14px; }
  .wa-widget__text { display: none; }
  .wa-widget__btn { padding: .42rem; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 820px) {
  .nav-toggle { display: grid; }
  .nav {
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 55;
    width: min(320px, 82vw);
    flex-direction: column;
    align-items: flex-start;
    gap: .35rem;
    background: var(--surface);
    padding: 6rem 1.75rem 2rem;
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform .3s var(--ease);
  }
  .nav.is-open { transform: none; }
  .nav a, .nav .nav__mega-toggle { font-size: 1.05rem; padding: .6rem 0; width: 100%; }
  .nav__close {
    display: grid; place-items: center;
    position: absolute; top: 1rem; right: 1.1rem;
    width: 2.5rem; height: 2.5rem;
    font-size: 1.9rem; line-height: 1; color: var(--purple-900);
    border-radius: 50%;
  }
  .nav__close:hover { background: var(--purple-100); }
  .header__cta-desktop { display: none; }
}

@media (max-width: 560px) {
  .footer__grid { grid-template-columns: 1fr; }
}