/* Isolated install guide; inherits the existing app palette. */
.header-actions .pwa-install-entry { display: inline-flex; color: var(--accent-dark); background: #edf3ff; padding: 8px 10px; white-space: nowrap; }
.pwa-install[hidden] { display: none; }
.pwa-install {
  position: fixed; z-index: 45; bottom: calc(24px + env(safe-area-inset-bottom, 0px)); left: 50%;
  transform: translateX(-50%); width: min(428px, calc(100% - 28px));
  display: grid; grid-template-columns: 44px minmax(0, 1fr) 44px; gap: 10px;
  align-items: center; padding: 14px; background: var(--surface); border: 1px solid var(--line);
  border-radius: 20px; box-shadow: 0 12px 40px #18243b18;
  animation: pwa-install-appear .18s ease-out;
}
.pwa-install__app-icon { width: 44px; height: 44px; border-radius: 12px; }
.pwa-install__copy { min-width: 0; }
.pwa-install__copy strong { display: block; font-size: .875rem; line-height: 1.5; }
.pwa-install__copy p { margin: 4px 0 0; font-size: .75rem; color: var(--muted); }
.pwa-install__close {
  flex-shrink: 0; width: 44px; min-height: 44px; border: 0; border-radius: 12px;
  background: var(--surface-soft); color: var(--muted); font-size: 1.4rem; cursor: pointer;
}
.pwa-install__action, .pwa-install__secondary {
  min-height: 44px; padding: 11px 16px; border-radius: 12px; border: 1px solid transparent;
  font-size: .875rem; font-weight: 650; cursor: pointer; line-height: 1.5; overflow-wrap: anywhere;
}
.pwa-install__action { background: #edf3ff; color: var(--accent-dark); }
.pwa-install > .pwa-install__action { grid-column: 1 / -1; }
.pwa-install__action:hover { background: #e1ebff; }
.pwa-install__secondary { border-color: var(--line); background: var(--surface); color: var(--ink); }
.pwa-install__dialog {
  width: min(520px, calc(100% - 32px)); max-height: calc(100dvh - 40px); padding: 0;
  color: var(--ink); border: 1px solid var(--line); background: var(--surface);
  border-radius: var(--radius-lg); box-shadow: 0 24px 90px #15243b26; overflow: hidden;
}
.pwa-install__dialog[open] { display: flex; flex-direction: column; }
.pwa-install__dialog::backdrop { background: #15243b66; backdrop-filter: blur(5px); }
.pwa-install__header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 22px; border-bottom: 1px solid var(--line); flex-shrink: 0; }
.pwa-install__header h2 { margin: 4px 0 0; font-size: 1.125rem; line-height: 1.5; }
.pwa-install__browser { margin: 0; color: var(--accent-dark); font-size: .75rem; font-weight: 650; }
.pwa-install__content { padding: 22px; overflow-y: auto; overscroll-behavior: contain; min-height: 0; }
.pwa-install__steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 22px; }
.pwa-install__steps li { display: grid; grid-template-columns: 48px minmax(0, 1fr); align-items: start; gap: 14px; }
.pwa-install__step-icon { width: 48px; height: 48px; border: 1px solid #dce7ff; border-radius: 14px; background: #edf3ff; color: var(--accent-dark); display: grid; place-items: center; }
.pwa-install__step-icon svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.pwa-install__steps h3 { margin: 1px 0 6px; font-size: .875rem; line-height: 1.6; }
.pwa-install__steps p, .pwa-install__note { margin: 0; font-size: .8125rem; color: var(--muted); line-height: 1.8; overflow-wrap: anywhere; }
.pwa-install__note { margin-top: 22px; padding: 14px; border-radius: 12px; background: var(--surface-soft); }
.pwa-install__footer { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 10px; padding: 16px 22px; border-top: 1px solid var(--line); flex-shrink: 0; }
@keyframes pwa-install-appear { from { opacity: 0; } to { opacity: 1; } }
@media (max-width: 640px) {
  .header-actions .pwa-install-entry { font-size: .75rem; padding: 8px; }
  .header-actions:has(.pwa-install-entry:not([hidden])) .local-badge { display: none; }
  .pwa-install { bottom: calc(151px + env(safe-area-inset-bottom, 0px)); }
  .pwa-install__dialog { margin: auto auto 0; width: 100%; max-width: 100%; max-height: calc(100dvh - 24px); border-radius: 24px 24px 0 0; border-bottom: 0; }
  .pwa-install__header { padding: 18px 20px; }
  .pwa-install__content { padding: 20px; }
  .pwa-install__footer { padding: 16px 20px calc(16px + env(safe-area-inset-bottom, 0px)); }
}
@media (max-width: 360px) { .pwa-install__footer { grid-template-columns: minmax(0, 1fr); } }
@media (prefers-reduced-motion: reduce) { .pwa-install { animation: none; } }