/* Section 4 — classic horizontal trolley problem */
.section-trolley {
  width: 100%;
  display: flex;
  justify-content: center;
}

.section-trolley.hidden {
  display: none !important;
}

.section-trolley:not(.hidden) {
  display: flex;
}

.trolley-panel {
  width: 100%;
  max-width: 480px;
  padding: 0 12px 20px;
}

.trolley-title {
  margin: 0 0 6px;
  font-family: "Roboto", sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  color: #1a1a1a;
}

.trolley-hint {
  margin: 0 0 12px;
  font-family: "Roboto", sans-serif;
  font-size: 0.85rem;
  text-align: center;
  color: #5f6368;
  line-height: 1.4;
}

/* viewBox 0 0 400 200 — all % = coord / 400 or / 200 */
.trolley-scene {
  position: relative;
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
  aspect-ratio: 2 / 1;
  background-color: #6eb5d8;
  background-image:
    linear-gradient(180deg, #87ceeb 0%, #b4dce8 38%, transparent 38%),
    url("sprites/grass-texture.svg"),
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 11px,
      rgba(27, 94, 32, 0.06) 11px,
      rgba(27, 94, 32, 0.06) 12px
    ),
    linear-gradient(180deg, transparent 38%, #4a9e4a 38%, #3d8b3d 100%);
  background-repeat: no-repeat, repeat, no-repeat;
  background-size:
    100% 100%,
    64px 64px,
    100% 100%;
  background-position: top, bottom, bottom;
  border: 3px solid #1a1a1a;
  border-radius: 8px;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.28);
  overflow: hidden;
}

.trolley-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.trolley-ground {
  fill: transparent;
}

.trolley-rail {
  stroke: #212121;
  stroke-width: 5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.trolley-rail-inner {
  stroke: #757575;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.trolley-tie {
  stroke: #5d4037;
  stroke-width: 2.5;
  stroke-linecap: round;
}

.trolley-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.trolley-layer--interactive {
  pointer-events: none;
}

.trolley-layer--interactive .trolley-lever-assembly {
  pointer-events: auto;
}

/* Fork switch at (195, 72) */
.trolley-switch {
  position: absolute;
  left: 48.75%;
  top: 36%;
  width: 6%;
  height: 2.5%;
  margin-top: -1.25%;
  background: #616161;
  border: 2px solid #1a1a1a;
  transform-origin: 0% 50%;
  transform: rotate(-38deg);
  transition: transform 0.08s ease-out;
  z-index: 4;
}

.trolley-scene.is-lever-dragging .trolley-switch {
  transition: none;
}

.trolley-scene.is-robot-committed .trolley-lever-arm {
  cursor: not-allowed;
}

.trolley-scene.is-robot-committed .trolley-lever-knob {
  box-shadow: inset -2px -2px 0 rgba(255, 100, 100, 0.35);
}

/* Train — pixel sprite, faces RIGHT (→) */
.trolley-train-wrap {
  position: absolute;
  width: 28%;
  height: 22%;
  z-index: 6;
  pointer-events: none;
}

.trolley-scene.is-resolved .trolley-train-wrap {
  transition: left 0.12s linear, top 0.12s linear;
}

.trolley-train-inner {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.trolley-sprite {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center bottom;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  display: block;
  filter: drop-shadow(2px 3px 0 rgba(0, 0, 0, 0.35));
}

.trolley-train-smoke {
  position: absolute;
  left: -12%;
  top: 8%;
  width: 20%;
  height: 20%;
  background: rgba(70, 70, 70, 0.5);
  border-radius: 50%;
  animation: trolley-smoke 0.85s ease-out infinite;
}

@keyframes trolley-smoke {
  0% {
    opacity: 0.65;
    transform: translateX(0) scale(0.5);
  }
  100% {
    opacity: 0;
    transform: translateX(-80%) scale(1.4);
  }
}

/* Victims on right — upper = person, lower = robot */
.trolley-victim {
  position: absolute;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: translate(-50%, -88%);
  transition: opacity 0.35s ease, filter 0.35s ease;
}

.trolley-person {
  left: 91.25%;
  top: 36%;
}

.trolley-robot {
  left: 91.25%;
  top: 62.5%;
}

.trolley-victim-tag {
  margin: 2px 0 0;
  padding: 2px 5px;
  font-family: "Roboto", sans-serif;
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  border-radius: 3px;
}

/* Person figure */
.trolley-figure--person {
  position: relative;
  width: 26px;
  height: 40px;
}

.trolley-figure--person .fig-head {
  position: absolute;
  top: 0;
  left: 50%;
  width: 14px;
  height: 14px;
  margin-left: -7px;
  background: #ffcc80;
  border: 2px solid #1a1a1a;
  border-radius: 50%;
}

.trolley-figure--person .fig-body {
  position: absolute;
  top: 12px;
  left: 50%;
  width: 16px;
  height: 14px;
  margin-left: -8px;
  background: #1565c0;
  border: 2px solid #1a1a1a;
  border-radius: 2px;
}

.trolley-figure--person .fig-leg {
  position: absolute;
  bottom: 0;
  width: 7px;
  height: 14px;
  background: #37474f;
  border: 2px solid #1a1a1a;
  border-radius: 0 0 2px 2px;
}

.trolley-figure--person .fig-leg--l {
  left: 4px;
}

.trolley-figure--person .fig-leg--r {
  right: 4px;
}

/* Robot figure */
.trolley-figure--robot {
  position: relative;
  width: 28px;
  height: 40px;
}

.trolley-figure--robot .fig-head {
  position: absolute;
  top: 2px;
  left: 50%;
  width: 20px;
  height: 12px;
  margin-left: -10px;
  background: #9e9e9e;
  border: 2px solid #1a1a1a;
  border-radius: 3px;
}

.trolley-figure--robot .fig-eye {
  position: absolute;
  top: 3px;
  width: 4px;
  height: 4px;
  background: #00e5ff;
  border: 1px solid #1a1a1a;
  box-shadow: 0 0 3px #00e5ff;
}

.trolley-figure--robot .fig-eye--l {
  left: 3px;
}

.trolley-figure--robot .fig-eye--r {
  right: 3px;
}

.trolley-figure--robot .fig-body {
  position: absolute;
  top: 14px;
  left: 50%;
  width: 22px;
  height: 16px;
  margin-left: -11px;
  background: #757575;
  border: 2px solid #1a1a1a;
  border-radius: 2px;
}

.trolley-figure--robot .fig-base {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 20px;
  height: 7px;
  margin-left: -10px;
  background: #424242;
  border: 2px solid #1a1a1a;
  border-radius: 2px;
}

.trolley-victim.is-dead {
  opacity: 0.4;
  filter: grayscale(1);
  transform: translate(-50%, -75%) rotate(-12deg);
}

.trolley-victim.is-safe {
  animation: victim-relief 0.55s ease;
}

@keyframes victim-relief {
  0%,
  100% {
    transform: translate(-50%, -88%) scale(1);
  }
  50% {
    transform: translate(-50%, -92%) scale(1.06);
  }
}

/* Lever — directly under trolley start (left) */
.trolley-lever-assembly {
  position: absolute;
  left: 12.5%;
  top: 54%;
  transform: translateX(-50%);
  z-index: 12;
  display: flex;
  flex-direction: column;
  align-items: center;
  touch-action: none;
}

.trolley-lever-base {
  width: 28px;
  height: 8px;
  background: #5d4037;
  border: 2px solid #1a1a1a;
  border-radius: 2px;
}

.trolley-lever-arm {
  position: relative;
  width: 5px;
  height: 50px;
  margin-top: -2px;
  transform-origin: bottom center;
  transform: rotate(-6deg);
  transition: transform 0.08s ease-out;
  cursor: grab;
  background: #1a1a1a;
  border-radius: 2px;
}

.trolley-lever-arm:active {
  cursor: grabbing;
}

.trolley-scene.is-lever-dragging .trolley-lever-arm {
  transition: none;
}

/* Ball on top — classic lever look */
.trolley-lever-knob {
  position: absolute;
  top: -11px;
  left: 50%;
  width: 14px;
  height: 14px;
  margin-left: -7px;
  background: #1a1a1a;
  border: 2px solid #1a1a1a;
  border-radius: 50%;
  box-shadow: inset -2px -2px 0 rgba(255, 255, 255, 0.15);
}

.trolley-lever-label {
  margin-top: 4px;
  font-family: "Roboto", sans-serif;
  font-size: 0.6rem;
  font-weight: 800;
  color: #1a1a1a;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.trolley-status {
  margin: 12px 0 0;
  min-height: 1.4em;
  font-family: "Roboto", sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
  color: #1a1a1a;
}

.trolley-status.is-urgent {
  color: #d93025;
  animation: urgent-pulse 0.8s ease-in-out infinite;
}

@keyframes urgent-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.55;
  }
}