/* PWA install prompt — E-EDUCATION */
.ud-pwa-install {
  position: fixed;
  inset: 0;
  z-index: 10050;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 1rem;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.ud-pwa-install.is-visible {
  pointer-events: auto;
  opacity: 1;
  visibility: visible;
}

.ud-pwa-install__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
}

.ud-pwa-install__card {
  position: relative;
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: 20px;
  padding: 1.35rem 1.35rem 1.15rem;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.28);
  border: 1px solid rgba(124, 58, 237, 0.12);
  animation: udPwaSlideUp 0.35s ease;
}

@keyframes udPwaSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.ud-pwa-install__top {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.ud-pwa-install__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, #059669, #7c3aed);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.35rem;
  flex-shrink: 0;
  box-shadow: 0 8px 20px rgba(124, 58, 237, 0.25);
}

.ud-pwa-install__eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7c3aed;
  margin: 0 0 0.2rem;
}

.ud-pwa-install__title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #18181b;
  margin: 0;
  line-height: 1.2;
}

.ud-pwa-install__text {
  font-size: 0.9rem;
  color: #52525b;
  line-height: 1.5;
  margin: 0 0 1rem;
}

.ud-pwa-install__ios {
  display: none;
  font-size: 0.82rem;
  color: #713f12;
  background: #fef3c7;
  border: 1px solid #fcd34d;
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  margin-bottom: 0.85rem;
  line-height: 1.45;
}

.ud-pwa-install.is-ios .ud-pwa-install__ios {
  display: block;
}

.ud-pwa-install__actions {
  display: flex;
  gap: 0.65rem;
}

.ud-pwa-install__btn {
  flex: 1;
  border: none;
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

.ud-pwa-install__btn--primary {
  background: linear-gradient(135deg, #7c3aed, #5b21b6);
  color: #fff;
}

.ud-pwa-install__btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(124, 58, 237, 0.35);
}

.ud-pwa-install__btn--ghost {
  background: #f4f4f5;
  color: #3f3f46;
}

.ud-pwa-install__btn--ghost:hover {
  background: #e4e4e7;
}

[data-theme="dark"] .ud-pwa-install__card {
  background: #18181b;
  border-color: #27272a;
}

[data-theme="dark"] .ud-pwa-install__title { color: #fafafa; }
[data-theme="dark"] .ud-pwa-install__text { color: #a1a1aa; }
[data-theme="dark"] .ud-pwa-install__btn--ghost {
  background: #27272a;
  color: #e4e4e7;
}

@media (min-width: 640px) {
  .ud-pwa-install {
    align-items: center;
  }
}