/* =========================================================
   Time Machine — css/apps/timemachine.css
   All selectors scoped under .app-timemachine
   Uses CSS custom properties from reset.css for dark/light.
   ========================================================= */

/* ---------- Root container ---------- */
.app-timemachine .tm-root {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  background: #060c18; /* fallback; stars canvas covers this */
  outline: none;
}

/* ---------- Stars canvas (full bg) ---------- */
.app-timemachine .tm-stars {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ---------- Receding-windows stack ---------- */
.app-timemachine .tm-stack {
  position: absolute;
  /* Center the stack, leaving room for timeline on the right */
  left: 0;
  right: 220px;
  top: 0;
  bottom: 64px;
  z-index: 1;
  perspective: 900px;
  perspective-origin: 50% 80%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

/* Slide animations when navigating */
.app-timemachine .tm-stack.tm-slide-older {
  animation: tm-push-back 0.3s var(--ease-out, cubic-bezier(0.22,1,0.36,1)) forwards;
}
.app-timemachine .tm-stack.tm-slide-newer {
  animation: tm-pull-forward 0.3s var(--ease-out, cubic-bezier(0.22,1,0.36,1)) forwards;
}

@keyframes tm-push-back {
  0%   { transform: translateZ(0); opacity: 1; }
  40%  { transform: translateZ(-120px) rotateX(8deg); opacity: 0.4; }
  100% { transform: translateZ(0); opacity: 1; }
}
@keyframes tm-pull-forward {
  0%   { transform: translateZ(-120px) rotateX(8deg); opacity: 0.4; }
  100% { transform: translateZ(0); opacity: 1; }
}

/* ---------- Foreground (active) Finder window ---------- */
.app-timemachine .tm-finder {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(560px, 90%);
  height: min(380px, 88%);
  background: var(--win-bg);
  border-radius: var(--window-radius, 11px);
  box-shadow: var(--shadow-active, 0 28px 70px rgba(0,0,0,0.45));
  border: 0.5px solid var(--win-border);
  display: grid;
  grid-template-columns: 160px 1fr;
  grid-template-rows: 38px 1fr;
  overflow: hidden;
  z-index: 10;
}

/* ---------- Ghost windows (receding behind the active one) ---------- */
.app-timemachine .tm-ghost {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: min(560px, 90%);
  height: min(380px, 88%);
  background: var(--win-bg);
  border-radius: var(--window-radius, 11px);
  border: 0.5px solid var(--win-border);
  display: grid;
  grid-template-columns: 160px 1fr;
  grid-template-rows: 38px 1fr;
  overflow: hidden;
  pointer-events: none;
  transform-origin: 50% 100%;
}

.app-timemachine .tm-ghost[data-depth="1"] {
  transform: translateX(-50%) translateY(-24px) translateZ(-80px) scale(0.94);
  opacity: 0.55;
  box-shadow: 0 12px 32px rgba(0,0,0,0.5);
  z-index: 9;
}
.app-timemachine .tm-ghost[data-depth="2"] {
  transform: translateX(-50%) translateY(-48px) translateZ(-160px) scale(0.88);
  opacity: 0.38;
  box-shadow: 0 8px 22px rgba(0,0,0,0.5);
  z-index: 8;
}
.app-timemachine .tm-ghost[data-depth="3"] {
  transform: translateX(-50%) translateY(-70px) translateZ(-240px) scale(0.82);
  opacity: 0.22;
  box-shadow: 0 6px 16px rgba(0,0,0,0.5);
  z-index: 7;
}
.app-timemachine .tm-ghost[data-depth="4"] {
  transform: translateX(-50%) translateY(-90px) translateZ(-310px) scale(0.76);
  opacity: 0.13;
  z-index: 6;
}
.app-timemachine .tm-ghost[data-depth="5"] {
  transform: translateX(-50%) translateY(-108px) translateZ(-370px) scale(0.70);
  opacity: 0.07;
  z-index: 5;
}

/* ---------- Mini Finder inside windows ---------- */

/* Titlebar row */
.app-timemachine .tm-finder-titlebar,
.app-timemachine .tm-ghost  .tm-finder-titlebar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 12px;
  background: var(--titlebar-bg);
  border-bottom: 0.5px solid var(--win-border);
  font-size: 12.5px;
  color: var(--titlebar-fg-active, rgba(0,0,0,0.78));
}
.app-timemachine .tm-tl-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  flex-shrink: 0;
}
.app-timemachine .tm-finder-title {
  flex: 1;
  text-align: center;
  font-weight: 500;
  font-size: 12.5px;
  color: var(--win-fg);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Sidebar column */
.app-timemachine .tm-finder-sidebar,
.app-timemachine .tm-ghost  .tm-finder-sidebar {
  background: var(--sidebar-bg);
  border-right: 0.5px solid var(--sidebar-border);
  padding: 8px 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.app-timemachine .tm-sb-item {
  font-size: 11.5px;
  color: var(--sidebar-fg);
  padding: 4px 8px;
  border-radius: 5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.app-timemachine .tm-sb-active {
  background: var(--accent);
  color: #fff;
}

/* Main body column */
.app-timemachine .tm-finder-body,
.app-timemachine .tm-ghost  .tm-finder-body {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--win-bg);
}

.app-timemachine .tm-finder-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border-bottom: 0.5px solid var(--win-border);
  font-size: 12px;
  color: var(--win-muted);
}
.app-timemachine .tm-tb-spacer { flex: 1; }
.app-timemachine .tm-tb-path { font-weight: 500; color: var(--win-fg); }

.app-timemachine .tm-finder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 10px 6px;
  padding: 12px;
  overflow-y: auto;
  flex: 1;
}
.app-timemachine .tm-ff {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--win-fg);
  text-align: center;
  border-radius: 6px;
  padding: 5px 3px;
}
.app-timemachine .tm-ff-glyph {
  font-size: 32px;
  line-height: 1;
}
.app-timemachine .tm-ff-name {
  word-break: break-word;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: 1.3;
}

/* ---------- Right-edge timeline ---------- */
.app-timemachine .tm-timeline {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 64px;
  width: 200px;
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  padding: 14px 16px 14px 0;
  gap: 2px;
  overflow-y: auto;
  /* Semi-transparent dark stripe */
  background: linear-gradient(to left,
    rgba(4, 10, 22, 0.82) 0%,
    rgba(4, 10, 22, 0.55) 70%,
    transparent 100%
  );
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.18) transparent;
}
.app-timemachine .tm-timeline::-webkit-scrollbar { width: 4px; }
.app-timemachine .tm-timeline::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.18);
  border-radius: 2px;
}

.app-timemachine .tm-tl-group {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  padding: 8px 4px 2px;
  align-self: stretch;
  text-align: right;
}

.app-timemachine .tm-tl-tick {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  padding: 3px 4px;
  border-radius: 4px;
  cursor: default;
  align-self: stretch;
  transition: background 0.12s;
}
.app-timemachine .tm-tl-tick:hover {
  background: rgba(255,255,255,0.08);
}
.app-timemachine .tm-tl-tick.tm-tl-selected {
  background: rgba(10,132,255,0.22);
}
.app-timemachine .tm-tl-tick.tm-tl-selected .tm-tl-dot-el {
  background: var(--accent, #0a84ff);
  box-shadow: 0 0 6px 1px rgba(10,132,255,0.6);
}

.app-timemachine .tm-tl-tick-label {
  font-size: 11px;
  color: rgba(255,255,255,0.75);
  white-space: nowrap;
}
.app-timemachine .tm-tl-selected .tm-tl-tick-label {
  color: #fff;
  font-weight: 600;
}

.app-timemachine .tm-tl-dot-el {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  flex-shrink: 0;
  transition: background 0.15s, box-shadow 0.15s;
}

/* Vertical connecting line between ticks */
.app-timemachine .tm-timeline::before {
  content: '';
  position: absolute;
  top: 14px;
  right: 19px;
  bottom: 14px;
  width: 1px;
  background: rgba(255,255,255,0.12);
  pointer-events: none;
}

/* ---------- Bottom bar ---------- */
.app-timemachine .tm-bottom {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 64px;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 20px;
  background: linear-gradient(to top,
    rgba(4, 10, 22, 0.92) 0%,
    rgba(4, 10, 22, 0.75) 100%
  );
  border-top: 0.5px solid rgba(255,255,255,0.08);
}

.app-timemachine .tm-nav-row {
  display: flex;
  gap: 0;
  border-radius: 8px;
  overflow: hidden;
  border: 0.5px solid rgba(255,255,255,0.18);
}

.app-timemachine .tm-nav-btn {
  width: 32px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.10);
  color: #fff;
  font-size: 15px;
  cursor: default;
  border: none;
  transition: background 0.12s;
}
.app-timemachine .tm-nav-btn:not([disabled]):hover {
  background: rgba(255,255,255,0.2);
}
.app-timemachine .tm-nav-btn:first-child {
  border-right: 0.5px solid rgba(255,255,255,0.18);
}

.app-timemachine .tm-snap-label {
  flex: 1;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-timemachine .tm-restore-btn {
  padding: 6px 18px;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 600;
  background: var(--accent, #0a84ff);
  color: #fff;
  border: none;
  cursor: default;
  transition: background 0.12s, transform 0.1s;
}
.app-timemachine .tm-restore-btn:hover {
  background: var(--accent-light, #409cff);
  transform: scale(1.02);
}
.app-timemachine .tm-restore-btn:active {
  transform: scale(0.97);
}

.app-timemachine .tm-cancel-btn {
  padding: 6px 14px;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 500;
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.85);
  border: 0.5px solid rgba(255,255,255,0.18);
  cursor: default;
  transition: background 0.12s;
}
.app-timemachine .tm-cancel-btn:hover {
  background: rgba(255,255,255,0.2);
}

/* ---------- Responsive: narrow window ---------- */
@media (max-width: 580px) {
  .app-timemachine .tm-stack {
    right: 160px;
  }
  .app-timemachine .tm-timeline {
    width: 152px;
  }
  .app-timemachine .tm-finder,
  .app-timemachine .tm-ghost {
    width: 96%;
  }
  .app-timemachine .tm-snap-label {
    display: none;
  }
}