:root {
  --ink: #121118;
  --warm: #F4F2E6;
  --mono: 'Space Mono', 'Courier New', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--ink);
  font-family: var(--mono);
  color: var(--warm);
  -webkit-font-smoothing: antialiased;
  user-select: none;
  -webkit-user-select: none;
}

/* ── Deck Container ── */
#deck {
  position: fixed;
  inset: 0;
  z-index: 1;
}

.slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
  padding: 24px;
}

.slide.active {
  opacity: 1;
  pointer-events: auto;
}

.slide img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 2px;
  box-shadow: 0 8px 60px rgba(0, 0, 0, 0.5);
}

/* ── Slide Counter ── */
#slide-counter {
  position: fixed;
  top: 20px;
  left: 24px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(244, 242, 230, 0.3);
  z-index: 100;
  pointer-events: none;
}

/* ── Progress Bar ── */
#progress-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 32px;
  z-index: 100;
  display: flex;
  align-items: flex-end;
}

#prog-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--warm);
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 1;
}

#prog-track {
  position: relative;
  display: flex;
  width: 100%;
  height: 100%;
  z-index: 2;
}

.prog-seg {
  flex: 1;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.prog-seg::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(244, 242, 230, 0.06);
}

.prog-seg.passed::after {
  background: transparent;
}

.prog-seg:hover::before {
  content: attr(data-label);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: rgba(244, 242, 230, 0.4);
  white-space: nowrap;
  padding: 4px 8px;
  margin-bottom: 4px;
}

/* ── Click Zones (visual hints) ── */
.slide::before,
.slide::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 35%;
  z-index: 10;
  cursor: pointer;
}

.slide::before { left: 0; }
.slide::after { right: 0; }

/* ── Video Slide ── */
.slide-video::before,
.slide-video::after {
  display: none;
}

.video-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 100%;
  max-height: 100%;
}

.video-wrap video {
  max-width: 100%;
  max-height: 80vh;
  border-radius: 2px;
  box-shadow: 0 8px 60px rgba(0, 0, 0, 0.5);
  cursor: pointer;
  background: #000;
}

.watch-btn {
  position: absolute;
  z-index: 20;
  padding: 16px 40px;
  background: var(--warm);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, opacity 0.3s;
}

.watch-btn:hover {
  transform: scale(1.05);
}

.watch-btn.hidden {
  opacity: 0;
  pointer-events: none;
}

/* ── Keyboard hint on first slide ── */
.hint {
  position: fixed;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(244, 242, 230, 0.2);
  z-index: 100;
  pointer-events: none;
  opacity: 0;
  animation: hintFade 4s ease 1.5s forwards;
}

@keyframes hintFade {
  0% { opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { opacity: 0; }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .slide { padding: 12px; }

  #slide-counter {
    top: 12px;
    left: 16px;
    font-size: 10px;
  }
}

@media (max-width: 480px) {
  .slide { padding: 4px; }
}