/*
 * PWA Install prompt — modern in-page UI.
 *
 * Two pieces of UI:
 *   .pwa-install       → bottom-anchored install card (auto + manual)
 *   .pwa-install-fab   → persistent floating "Install app" pill
 *
 * Themed via CSS variables (--rc-primary, --rc-accent, --rc-surface, ...) from base.html.
 */

.pwa-install {
  position: fixed;
  z-index: 9999;
  left: 50%;
  bottom: max(1rem, env(safe-area-inset-bottom));
  transform: translate(-50%, 120%);
  width: min(420px, calc(100vw - 1.25rem));
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto;
  gap: 0.85rem;
  align-items: start;
  padding: 1rem 1.1rem;
  border-radius: 1.1rem;
  background: rgb(var(--rc-surface) / 0.97);
  color: rgb(var(--rc-page-fg));
  border: 1px solid rgb(var(--rc-border));
  box-shadow:
    0 24px 60px -22px rgba(0, 0, 0, 0.35),
    0 8px 24px -12px rgba(var(--rc-primary) / 0.3);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  opacity: 0;
  pointer-events: none;
  transition:
    transform 0.34s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.24s ease-out;
  font-family: var(--rc-font-family, "Plus Jakarta Sans", system-ui, sans-serif);
}

@media (min-width: 768px) {
  .pwa-install {
    left: auto;
    right: max(1rem, env(safe-area-inset-right));
    bottom: max(1rem, env(safe-area-inset-bottom));
    transform: translate(0, 120%);
  }
}

.pwa-install--show {
  transform: translate(-50%, 0);
  opacity: 1;
  pointer-events: auto;
}
@media (min-width: 768px) {
  .pwa-install--show {
    transform: translate(0, 0);
  }
}

.pwa-install::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(var(--rc-primary) / 0.55), rgba(var(--rc-accent) / 0.35) 60%, transparent 100%);
  -webkit-mask: linear-gradient(#000, #000) content-box, linear-gradient(#000, #000);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

.pwa-install__icon {
  grid-row: 1 / span 2;
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 0.85rem;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(var(--rc-primary) / 0.18), rgba(var(--rc-accent) / 0.22));
  border: 1px solid rgba(var(--rc-primary) / 0.25);
  overflow: hidden;
  flex-shrink: 0;
}
.pwa-install__icon img {
  width: 78%;
  height: 78%;
  object-fit: contain;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.25));
}

.pwa-install__body {
  min-width: 0;
}

.pwa-install__eyebrow {
  margin: 0 0 0.18rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgb(var(--rc-primary));
}

.pwa-install__title {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.pwa-install__desc {
  margin: 0 0 0.7rem;
  font-size: 0.84rem;
  line-height: 1.45;
  color: rgb(var(--rc-page-fg) / 0.78);
}

.pwa-install__features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.7rem;
  margin: 0 0 0.85rem;
}
.pwa-install__feature {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  font-weight: 500;
  color: rgb(var(--rc-page-fg) / 0.7);
}
.pwa-install__feature svg {
  width: 0.9rem;
  height: 0.9rem;
  color: rgb(var(--rc-primary));
}

.pwa-install__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.pwa-install__actions--single {
  margin-top: 0.5rem;
}

.pwa-install__btn {
  appearance: none;
  border: 1px solid transparent;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  font-size: 0.86rem;
  padding: 0.55rem 0.95rem;
  border-radius: 0.7rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.pwa-install__btn svg {
  width: 1rem;
  height: 1rem;
}

.pwa-install__btn--primary {
  color: #fff;
  background-image: linear-gradient(135deg, rgb(var(--rc-primary)), rgb(var(--rc-accent)));
  box-shadow: 0 10px 22px -10px rgba(var(--rc-primary) / 0.7);
}
.pwa-install__btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 26px -10px rgba(var(--rc-primary) / 0.8);
}
.pwa-install__btn--primary:active {
  transform: translateY(0);
}
.pwa-install__btn--primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.pwa-install__btn--ghost {
  background: transparent;
  color: rgb(var(--rc-page-fg) / 0.78);
  border-color: rgb(var(--rc-border));
}
.pwa-install__btn--ghost:hover {
  background: rgb(var(--rc-surface));
  color: rgb(var(--rc-page-fg));
}

.pwa-install__close {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 9999px;
  border: 1px solid transparent;
  background: transparent;
  color: rgb(var(--rc-page-fg) / 0.6);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}
.pwa-install__close:hover {
  background: rgb(var(--rc-page-fg) / 0.08);
  color: rgb(var(--rc-page-fg));
}
.pwa-install__close svg {
  width: 0.95rem;
  height: 0.95rem;
}

/* Manual / iOS step-by-step variant */
.pwa-install__steps,
.pwa-install--manual .pwa-install__steps,
.pwa-install--ios .pwa-install__steps {
  margin: 0;
  padding-left: 1.15rem;
  font-size: 0.86rem;
  line-height: 1.5;
  color: rgb(var(--rc-page-fg) / 0.85);
  display: grid;
  gap: 0.2rem;
}
.pwa-install__steps li::marker,
.pwa-install--manual .pwa-install__steps li::marker,
.pwa-install--ios .pwa-install__steps li::marker {
  color: rgb(var(--rc-primary));
  font-weight: 700;
}
.pwa-install__inline-icon {
  display: inline-flex;
  width: 1.05rem;
  height: 1.05rem;
  vertical-align: -0.18rem;
  margin: 0 0.15rem;
  color: rgb(var(--rc-primary));
}
.pwa-install__inline-icon svg {
  width: 100%;
  height: 100%;
}

@media (prefers-reduced-motion: reduce) {
  .pwa-install {
    transition: opacity 0.18s ease-out;
    transform: translate(-50%, 0);
  }
  @media (min-width: 768px) {
    .pwa-install {
      transform: translate(0, 0);
    }
  }
  .pwa-install:not(.pwa-install--show) {
    opacity: 0;
  }
}

/* ====================================================================
   Floating "Install app" pill — always-visible affordance
   ==================================================================== */

.pwa-install-fab {
  position: fixed;
  z-index: 9998;
  right: max(0.85rem, env(safe-area-inset-right));
  bottom: max(0.85rem, env(safe-area-inset-bottom));
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 1.05rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 9999px;
  color: #fff;
  font: 600 0.92rem / 1 var(--rc-font-family, "Plus Jakarta Sans", system-ui, sans-serif);
  letter-spacing: 0.01em;
  cursor: pointer;
  background-image: linear-gradient(135deg, rgb(var(--rc-primary)), rgb(var(--rc-accent)));
  box-shadow:
    0 18px 38px -14px rgba(var(--rc-primary) / 0.65),
    0 8px 18px -10px rgba(0, 0, 0, 0.35);
  opacity: 0;
  transform: translateY(140%) scale(0.92);
  pointer-events: none;
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.22s ease-out, box-shadow 0.2s ease;
  overflow: visible;
}
.pwa-install-fab:hover {
  box-shadow:
    0 22px 44px -14px rgba(var(--rc-primary) / 0.75),
    0 10px 20px -10px rgba(0, 0, 0, 0.4);
}
.pwa-install-fab:active {
  transform: translateY(0) scale(0.98);
}
.pwa-install-fab--show {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.pwa-install-fab__icon {
  width: 1.4rem;
  height: 1.4rem;
  display: grid;
  place-items: center;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.22);
}
.pwa-install-fab__icon svg {
  width: 0.95rem;
  height: 0.95rem;
}
.pwa-install-fab__label {
  white-space: nowrap;
  font-weight: 700;
}

.pwa-install-fab__pulse {
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(135deg, rgb(var(--rc-primary)), rgb(var(--rc-accent)));
  opacity: 0;
  filter: blur(8px);
  animation: pwa-fab-pulse 2.6s ease-out infinite;
}
@keyframes pwa-fab-pulse {
  0%   { opacity: 0;   transform: scale(0.96); }
  35%  { opacity: 0.55; }
  100% { opacity: 0;   transform: scale(1.14); }
}

@media (max-width: 480px) {
  .pwa-install-fab__label { display: none; }
  .pwa-install-fab {
    padding: 0.8rem;
    width: 3.2rem;
    height: 3.2rem;
    justify-content: center;
  }
  .pwa-install-fab__icon { background: transparent; width: 1.6rem; height: 1.6rem; }
  .pwa-install-fab__icon svg { width: 1.4rem; height: 1.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  .pwa-install-fab { transition: opacity 0.15s ease-out; transform: none; }
  .pwa-install-fab:not(.pwa-install-fab--show) { opacity: 0; }
  .pwa-install-fab__pulse { animation: none; }
}