.chamber {
  position: relative;
  height: 100dvh;
  min-height: 100dvh;
  max-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: stretch;
  padding: 0;
  padding-left: var(--space-md);
  box-sizing: border-box;
  overflow: hidden;
  opacity: 0.5;
  transition: opacity 200ms linear;
}

.chamber.is-near {
  opacity: 0.82;
}

.chamber.is-active {
  opacity: 1;
}

.chamber.is-far {
  opacity: 0.38;
}

@media (prefers-reduced-motion: reduce) {
  .chamber {
    transition: opacity var(--duration-fast) var(--ease-out);
  }
}

.chamber-inner {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding:
    calc(56px + env(safe-area-inset-top, 0px))
    var(--space-md)
    calc(88px + env(safe-area-inset-bottom, 0px));
  box-sizing: border-box;
}

.chamber-header {
  margin-bottom: var(--space-lg);
  position: relative;
  padding-right: 7.5rem;
}

.chamber-home-btn {
  display: none !important;
}

.chamber-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: var(--space-sm);
}

.chamber-subtitle {
  color: var(--muted);
  font-size: 1rem;
  max-width: 560px;
  margin: 0;
}

.chamber-hint {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  border: 1px solid rgba(201, 191, 255, 0.2);
  background: rgba(123, 97, 255, 0.08);
}

.chamber-hint-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--cosmic-void);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

.chamber-hint-text {
  flex: 1;
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
}

.chamber.is-active .chamber-hint {
  animation: hintEntrance 400ms var(--ease-silk) 200ms both;
}

@keyframes hintEntrance {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chamber .phone-frame {
  transition: transform var(--duration-chamber) var(--ease-silk);
}

.chamber.is-active .phone-frame {
  transform: translateY(calc(var(--phone-parallax, 0px)));
}

.chamber-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  align-items: center;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

@media (min-width: 900px) {
  .chamber-body {
    grid-template-columns: 1fr 1fr;
  }

  .chamber--reverse .chamber-body {
    direction: rtl;
  }

  .chamber--reverse .chamber-body > * {
    direction: ltr;
  }
}

.chamber-copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.chamber-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.chamber-features li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.9rem;
  color: var(--muted);
}

.chamber-features li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

.chamber-nav {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-md);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--line);
  flex-shrink: 0;
}

.chamber-nav [data-action="next"] {
  display: none !important;
}

.chamber-nav-back {
  font-size: 0.9rem;
  color: var(--outline);
}

.chamber-nav-back:hover {
  color: var(--primary);
}

.phone-frame {
  position: relative;
  width: var(--phone-w);
  max-width: 100%;
  margin: 0 auto;
  aspect-ratio: 280 / 560;
  border-radius: 32px;
  padding: 12px;
  background: var(--surface-highest);
  border: 2px solid var(--line);
  box-shadow: var(--shadow), var(--shadow-glow);
}

.phone-notch {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 24px;
  background: var(--cosmic-void);
  border-radius: 12px;
  z-index: 2;
}

.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 24px;
  overflow: hidden;
  background: var(--bg);
  position: relative;
}

.mock-app-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 36px 14px 10px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.mock-app-bar h3 {
  font-size: 0.85rem;
  font-weight: 700;
}

.mock-app-body {
  padding: 12px;
  height: calc(100% - 56px);
  overflow: hidden;
}

.mock-tile {
  padding: 12px;
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  transition: transform var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.mock-tile.is-highlight {
  border-color: var(--primary);
  box-shadow: 0 0 16px rgba(201, 191, 255, 0.2);
}

.mock-tile h4 {
  font-size: 0.75rem;
  margin: 0 0 4px;
}

.mock-tile p {
  font-size: 0.65rem;
  color: var(--muted);
  margin: 0;
}

.mock-tile-icon {
  font-size: 14px;
  margin-bottom: 6px;
}