.upd-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(44, 24, 16, .38);
  z-index: 130;
  animation: upd-fade-in .18s ease;
}

@keyframes upd-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.upd-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(360px, 92vw);
  background: var(--surface);
  border-left: 1px solid var(--bd);
  z-index: 131;
  display: flex;
  flex-direction: column;
  box-shadow: -8px 0 32px rgba(44, 24, 16, .14);
  animation: upd-slide-in .22s cubic-bezier(.34, 1.3, .64, 1);
  overflow: hidden;
}

@keyframes upd-slide-in {
  from { transform: translateX(32px); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* ---- Cabecera del panel ---- */
.upd-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.25rem .85rem;
  border-bottom: 1px solid var(--bd);
  flex-shrink: 0;
}
.upd-head-left {
  display: flex;
  align-items: center;
  gap: .5rem;
}
.upd-head-icon {
  font-size: 1rem;
  color: var(--w1);
  line-height: 1;
}
.upd-head-title {
  font-family: var(--fd);
  font-size: 1.1rem;
  color: var(--tx);
}
.upd-sub {
  font-size: .74rem;
  color: var(--tx3);
  padding: .55rem 1.25rem .65rem;
  border-bottom: 1px solid var(--bd);
  flex-shrink: 0;
}
.upd-close {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--s2);
  color: var(--tx2);
  font-size: .82rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  transition: background .15s, color .15s;
  flex-shrink: 0;
}
.upd-close:hover { background: var(--w4); color: var(--w2); }

/* ---- Cuerpo scrolleable ---- */
.upd-body {
  flex: 1;
  overflow-y: auto;
  padding: .85rem 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ---- Grupo por versión ---- */
.upd-group {
  display: flex;
  flex-direction: column;
  gap: .65rem;
}
.upd-group-head {
  display: flex;
  align-items: center;
  gap: .55rem;
}
.upd-version {
  font-size: .72rem;
  font-weight: 600;
  font-family: var(--fb);
  color: var(--w1);
  background: var(--w4);
  border: 1px solid var(--w3);
  padding: .15rem .55rem;
  border-radius: 8px;
  letter-spacing: .02em;
}
.upd-date {
  font-size: .72rem;
  color: var(--tx3);
  letter-spacing: .01em;
}
.upd-new-badge {
  font-size: .65rem;
  font-weight: 600;
  font-family: var(--fb);
  color: #fff;
  background: var(--w1);
  padding: .12rem .45rem;
  border-radius: 8px;
  letter-spacing: .03em;
  text-transform: uppercase;
}
.upd-group-latest .upd-list {
  border-left: 2px solid var(--w3);
  padding-left: .85rem;
}

/* ---- Lista de items ---- */
.upd-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .55rem;
  padding-left: 0;
}
.upd-item {
  display: flex;
  align-items: flex-start;
  gap: .55rem;
}
.upd-icon {
  font-size: .75rem;
  color: var(--w1);
  flex-shrink: 0;
  margin-top: .18rem;
  opacity: .8;
}
.upd-text {
  font-size: .82rem;
  color: var(--tx2);
  line-height: 1.55;
}

/* ================================================================
   PUNTO ROJO — compartido por escritorio y móvil
   ================================================================ */
.upd-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--w1);
  /* Oculto por defecto — el JS lo muestra cuando hay novedades */
  display: none;
  flex-shrink: 0;
  animation: upd-dot-pulse 2s ease-in-out infinite;
}

@keyframes upd-dot-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .6; transform: scale(.85); }
}

/* ================================================================
   BOTÓN ESCRITORIO — fixed en el espacio vacío a la izquierda
   ================================================================ */
.upd-desktop-btn {
  /* Oculto en móvil; visible solo en desktop via media query */
  display: none;
  position: fixed;
  /* main centrado con max-width:660px → botón queda a su izquierda */
  left: max(1rem, calc(50vw - 330px - 120px));
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;

  flex-direction: column;
  align-items: center;
  gap: .5rem;
  padding: .9rem .75rem;
  background: var(--surface);
  border: 1px solid var(--bd);
  border-radius: var(--r);
  color: var(--tx3);
  cursor: pointer;
  font-family: var(--fb);
  box-shadow: 0 2px 12px rgba(44, 24, 16, .07);
  transition: background .15s, color .15s, border-color .15s, box-shadow .18s;
}
.upd-desktop-btn:hover {
  background: var(--w4);
  color: var(--w2);
  border-color: var(--w3);
  box-shadow: 0 4px 18px rgba(44, 24, 16, .11);
}

.upd-desktop-icon {
  font-size: 1.1rem;
  color: var(--w1);
  line-height: 1;
}

.upd-desktop-label {
  font-size: .7rem;
  writing-mode: vertical-lr;
  text-orientation: mixed;
  transform: rotate(180deg);
  letter-spacing: .05em;
  color: inherit;
  white-space: nowrap;
}

/* El punto rojo en el botón de escritorio */
.upd-desktop-dot {
  /* hereda de .upd-dot: display:none por defecto */
}

/* Mostrar el botón solo en pantallas anchas */
@media (min-width: 841px) {
  .upd-desktop-btn { display: flex; }
}

/* ================================================================
   BOTÓN MÓVIL — dentro de .mob-header-actions en el header
   ================================================================ */

/* El botón usa las clases .upd-mob-btn y .mob-header-btn.
   mob-header-btn ya tiene display:flex y los estilos base.
   Solo necesitamos position:relative para el badge y el dot. */
.upd-mob-btn {
  position: relative;
}

/* Punto rojo encima del botón móvil */
#upd-mob-dot {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--w1);
  border: 1.5px solid var(--surface);
  /* Oculto por defecto — JS lo muestra */
  display: none;
  pointer-events: none;
  animation: upd-dot-pulse 2s ease-in-out infinite;
}

/* ================================================================
   PANEL EN MÓVIL — sube desde abajo
   ================================================================ */
@media (max-width: 640px) {
  .upd-panel {
    width: 100%;
    top: auto;
    bottom: 62px; /* encima del mob-nav */
    right: 0;
    left: 0;
    max-height: 80vh;
    border-left: none;
    border-top: 1px solid var(--bd);
    border-radius: 18px 18px 0 0;
    box-shadow: 0 -4px 28px rgba(44, 24, 16, .15);
    animation: upd-slide-up .22s cubic-bezier(.34, 1.3, .64, 1);
  }

  @keyframes upd-slide-up {
    from { transform: translateY(24px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
  }
}