:root {
  --bg: #f4efe2;
  --panel: rgba(255, 250, 243, 0.86);
  --panel-strong: rgba(255, 250, 243, 0.95);
  --ink: #192534;
  --muted: #6d7483;
  --accent: #ef7b45;
  --accent-dark: #b44e1f;
  --accent-soft: rgba(239, 123, 69, 0.16);
  --mint: #85b96d;
  --sky: #b8ddff;
  --line: rgba(25, 37, 52, 0.1);
  --success: #2e8b57;
  --danger: #b64545;
  --shadow: 0 24px 60px rgba(63, 44, 19, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Avenir Next", "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 18%, rgba(239, 123, 69, 0.24), transparent 20%),
    radial-gradient(circle at 82% 12%, rgba(184, 221, 255, 0.36), transparent 22%),
    radial-gradient(circle at 76% 84%, rgba(133, 185, 109, 0.16), transparent 20%),
    linear-gradient(180deg, #fef8ee 0%, var(--bg) 100%);
}

.app-shell {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 22px;
  max-width: 1360px;
  margin: 0 auto;
  padding: 24px;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 42px;
  line-height: 0.95;
}

h2 {
  font-size: 20px;
  margin-bottom: 0;
}

.intro {
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.6;
}

.hero-card {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  padding: 24px;
  border-radius: 30px;
  background:
    linear-gradient(180deg, rgba(255, 241, 218, 0.95) 0%, rgba(252, 224, 190, 0.92) 100%);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 220px;
}

.hero-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.lang-toggle {
  padding: 8px 12px;
  border-radius: 12px;
}

.hero-art {
  position: absolute;
  inset: 0;
}

.hero-sun {
  position: absolute;
  right: 34px;
  top: 30px;
  width: 74px;
  height: 74px;
  border-radius: 50%;
  background: radial-gradient(circle, #fff8d2 0%, #ffd175 62%, rgba(255, 209, 117, 0) 70%);
  filter: blur(1px);
}

.hero-cloud {
  position: absolute;
  background: rgba(255, 255, 255, 0.84);
  border-radius: 999px;
  box-shadow: 26px 8px 0 2px rgba(255, 255, 255, 0.84), -18px 10px 0 0 rgba(255, 255, 255, 0.84);
}

.cloud-a {
  width: 58px;
  height: 18px;
  right: 126px;
  top: 44px;
}

.cloud-b {
  width: 44px;
  height: 14px;
  right: 54px;
  top: 86px;
}

.hero-wheel,
.hero-coaster {
  position: absolute;
  filter: drop-shadow(0 10px 18px rgba(117, 63, 20, 0.18));
}

.hero-wheel {
  right: 34px;
  bottom: 22px;
  font-size: 94px;
}

.hero-coaster {
  right: 132px;
  bottom: 52px;
  font-size: 74px;
}

.build-panel,
.mode-panel,
.leaderboard-panel,
.tips-panel,
.hud-panel,
.board-panel,
.log-panel {
  padding: 22px;
  border-radius: 18px;
}

.section-head,
.board-header,
.log-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.toolbar {
  display: grid;
  gap: 12px;
  margin: 18px 0 16px;
}

.mission-card,
.leaderboard-entry {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
}

.mission-card {
  margin-top: 14px;
}

.mission-card strong {
  display: block;
  margin-bottom: 8px;
}

.mission-card p,
.leaderboard-entry small,
.leaderboard-empty {
  color: var(--muted);
  line-height: 1.55;
}

.leaderboard-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.leaderboard-entry {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
}

.tool-ribbon {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.tool-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid rgba(25, 37, 52, 0.1);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
}

.tool-chip.active {
  background: rgba(239, 123, 69, 0.14);
  color: var(--accent-dark);
  border-color: rgba(239, 123, 69, 0.2);
}

.build-btn,
button,
.tile,
.log-entry,
.insight-card,
.hud-card {
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
}

button {
  border: 0;
  border-radius: 18px;
  cursor: pointer;
}

button:disabled {
  opacity: 0.58;
  cursor: not-allowed;
  transform: none;
}

.build-btn {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
  color: var(--ink);
  text-align: left;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.build-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(246, 237, 224, 0.9) 100%);
  font-size: 24px;
}

.build-meta {
  display: grid;
  gap: 3px;
}

.build-title {
  font-weight: 700;
}

.build-copy {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.build-price {
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(25, 37, 52, 0.06);
  font-size: 13px;
}

.build-btn:hover,
button:hover,
.insight-card:hover,
.hud-card:hover,
.log-entry:hover {
  transform: translateY(-2px);
}

.build-btn.active {
  background: linear-gradient(180deg, rgba(239, 123, 69, 0.22) 0%, rgba(255, 239, 226, 0.92) 100%);
  border-color: rgba(239, 123, 69, 0.34);
  box-shadow: 0 10px 24px rgba(239, 123, 69, 0.18);
}

button.active-mode {
  background: linear-gradient(180deg, rgba(182, 69, 69, 0.16) 0%, rgba(255, 242, 242, 0.92) 100%);
  border-color: rgba(182, 69, 69, 0.28);
  color: var(--danger);
}

.actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.secondary-actions {
  margin-top: 10px;
}

button {
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 700;
}

.primary {
  background: linear-gradient(180deg, #ff955c 0%, var(--accent) 100%);
  color: #fff;
  box-shadow: 0 14px 28px rgba(239, 123, 69, 0.3);
}

.ghost {
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink);
  border: 1px solid var(--line);
}

.tips-panel {
  background: linear-gradient(180deg, rgba(246, 251, 243, 0.88) 0%, rgba(255, 250, 243, 0.86) 100%);
}

.tips {
  padding-left: 18px;
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.main-stage {
  display: grid;
  gap: 18px;
}

.workspace-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.hud-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.hud-strip.compact {
  gap: 0;
  border: 1px solid rgba(25, 37, 52, 0.08);
  background: rgba(255, 255, 255, 0.52);
}

.hud-card {
  padding: 16px 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
}

.hud-strip.compact .hud-card {
  border-radius: 0;
  border: 0;
  border-right: 1px solid rgba(25, 37, 52, 0.08);
  background: transparent;
}

.hud-strip.compact .hud-card:last-child {
  border-right: 0;
}

.hud-card.accent {
  background: linear-gradient(180deg, rgba(255, 235, 222, 0.95) 0%, rgba(255, 245, 238, 0.88) 100%);
}

.hud-strip.compact .hud-card.accent {
  background: linear-gradient(180deg, rgba(255, 235, 222, 0.72) 0%, rgba(255, 245, 238, 0.54) 100%);
}

.satisfaction-card {
  min-width: 0;
}

.operation-strip {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 14px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(25, 37, 52, 0.08);
}

.operation-copy {
  display: grid;
  gap: 4px;
}

.operation-copy strong {
  font-size: 18px;
}

.operation-track {
  align-self: center;
  height: 14px;
  border-radius: 999px;
  background: rgba(25, 37, 52, 0.08);
  overflow: hidden;
}

.operation-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #ffd166 0%, #ff8b5c 55%, #b14d1f 100%);
  transition: width 180ms linear;
}

.hud-card span,
.insight-card span {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}

.hud-card strong,
.insight-card strong {
  font-size: 28px;
}

.meter {
  height: 8px;
  margin-top: 12px;
  border-radius: 999px;
  background: rgba(25, 37, 52, 0.08);
  overflow: hidden;
}

.meter span {
  display: block;
  width: 0;
  height: 100%;
  margin: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent) 0%, #ffb169 100%);
}

.selected-build,
.summary-badge,
.board-chip {
  padding: 10px 14px;
  border-radius: 8px;
  background: rgba(25, 37, 52, 0.06);
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.board-status {
  display: flex;
  gap: 10px;
}

.board-chip.subtle {
  background: rgba(184, 221, 255, 0.26);
}

.board-stage {
  position: relative;
  margin: 18px 0 20px;
  padding: 18px 18px 52px;
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(187, 225, 255, 0.82) 0%, rgba(206, 234, 255, 0.62) 20%, rgba(229, 236, 215, 0.9) 20%, rgba(222, 230, 206, 0.96) 100%);
  border: 1px solid rgba(255, 255, 255, 0.72);
  overflow: hidden;
  perspective: 1400px;
}

.board-stage::after {
  content: "";
  position: absolute;
  left: 9%;
  right: 9%;
  bottom: 22px;
  height: 28px;
  background: rgba(40, 71, 34, 0.22);
  filter: blur(16px);
  border-radius: 999px;
  z-index: 0;
}

.board-stage::before {
  content: "";
  position: absolute;
  left: 36px;
  right: 36px;
  bottom: 16px;
  height: 28px;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(118, 87, 52, 0.92) 0 22px,
      rgba(229, 214, 177, 0.95) 22px 26px
    );
  border-top: 3px solid rgba(255, 247, 223, 0.86);
  box-shadow: 0 -8px 0 rgba(92, 66, 36, 0.18);
  z-index: 2;
  pointer-events: none;
}

.tile-tooltip {
  position: absolute;
  top: 18px;
  left: 18px;
  z-index: 4;
  width: 220px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(25, 37, 52, 0.9);
  color: #fff8ef;
  box-shadow: 0 14px 28px rgba(25, 37, 52, 0.22);
  pointer-events: none;
  transition: opacity 120ms ease, transform 120ms ease;
}

.tile-tooltip.hidden {
  opacity: 0;
  transform: translateY(4px);
}

.tile-tooltip strong,
.tile-tooltip span,
.tile-tooltip small {
  display: block;
}

.tile-tooltip strong {
  font-size: 16px;
}

.tile-tooltip small {
  margin-top: 4px;
  color: rgba(255, 248, 239, 0.78);
  line-height: 1.45;
}

.tooltip-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 12px;
  margin-top: 12px;
}

.tooltip-grid span {
  font-size: 11px;
  color: rgba(255, 248, 239, 0.62);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tooltip-grid strong {
  font-size: 14px;
  margin-top: 2px;
}

.board-skyline {
  display: flex;
  gap: 14px;
  position: absolute;
  right: 24px;
  top: 14px;
  font-size: 22px;
  opacity: 0.55;
}

.board {
  position: relative;
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 4px;
  z-index: 1;
  padding: 0;
  border-radius: 0;
  background:
    linear-gradient(180deg, rgba(149, 166, 124, 0.08), rgba(149, 166, 124, 0.06));
  transform: rotateX(58deg);
  transform-origin: center top;
  transform-style: preserve-3d;
  margin: 34px 18px 110px;
}

.tile {
  position: relative;
  aspect-ratio: 1;
  border-radius: 0;
  border: 1px solid rgba(139, 155, 117, 0.38);
  background:
    linear-gradient(180deg, #dfe8cc 0%, #d9e2c2 100%);
  cursor: pointer;
  overflow: visible;
  user-select: none;
  box-shadow:
    0 11px 0 rgba(103, 130, 79, 0.22),
    2px 11px 0 rgba(84, 105, 65, 0.12);
}

.tile:hover {
  transform: translateY(-8px);
  box-shadow:
    0 18px 0 rgba(103, 130, 79, 0.16),
    0 20px 24px rgba(25, 37, 52, 0.14);
}

.tile::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(139, 155, 117, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(139, 155, 117, 0.08) 1px, transparent 1px);
  background-size: 14px 14px;
}

.tile.connected-path::before,
.tile.entrance::before {
  background:
    linear-gradient(90deg, rgba(139, 155, 117, 0.05) 1px, transparent 1px),
    linear-gradient(180deg, rgba(139, 155, 117, 0.05) 1px, transparent 1px);
  background-size: 14px 14px;
}

.tile::after {
  content: attr(data-preview);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 26px;
  color: rgba(25, 37, 52, 0.16);
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 160ms ease, transform 160ms ease;
}

.tile.empty:hover::after {
  opacity: 1;
  transform: scale(1);
}

.tile.preview-valid::after,
.tile.preview-invalid::after {
  content: "";
  opacity: 1;
  transform: none;
  background: transparent;
}

.tile.preview-valid {
  box-shadow: inset 0 0 0 2px rgba(46, 139, 87, 0.68);
}

.tile.preview-invalid {
  box-shadow: inset 0 0 0 2px rgba(182, 69, 69, 0.72);
}

.preview-fill {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.42;
}

.preview-fill.path {
  background: rgba(106, 111, 118, 0.65);
}

.preview-fill.carousel {
  background: rgba(255, 185, 111, 0.58);
}

.preview-fill.coaster {
  background: rgba(255, 157, 77, 0.6);
}

.preview-fill.food {
  background: rgba(255, 143, 105, 0.58);
}

.preview-fill.restroom {
  background: rgba(131, 201, 247, 0.58);
}

.preview-fill.decor {
  background: rgba(149, 203, 115, 0.58);
}

.preview-fill.drop,
.preview-fill.wheel {
  background: rgba(255, 157, 77, 0.6);
}

.preview-fill.drink,
.preview-fill.firstaid {
  background: rgba(131, 201, 247, 0.54);
}

.preview-fill.fountain,
.preview-fill.garden {
  background: rgba(149, 203, 115, 0.58);
}

.preview-fill.power {
  background: rgba(160, 160, 170, 0.58);
}

.tile-content {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  transform: rotateX(-58deg) translateY(-15px) translateZ(22px) scale(1.08);
  transform-style: preserve-3d;
}

.road-mark {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  filter: drop-shadow(0 14px 12px rgba(25, 37, 52, 0.18));
}

.road-core,
.road-seg {
  position: absolute;
  overflow: visible;
}

.road-core::before,
.road-seg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, #90959c 0%, #6e747c 100%);
}

.road-core::after,
.road-seg::after {
  content: "";
  position: absolute;
  left: 0;
  right: -8px;
  top: 100%;
  height: 10px;
  background: linear-gradient(180deg, #585d64 0%, #40454c 100%);
  transform-origin: center top;
  transform: skewX(-50deg);
}

.road-core {
  inset: 0;
}

.road-seg {
  z-index: 1;
}

.lane-mark {
  position: absolute;
  inset: 0;
  margin: auto;
}

.road-core > .lane-mark::before,
.road-seg > .lane-mark::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, rgba(248, 245, 232, 0.92) 0 10px, transparent 10px 16px);
}

.road-seg.north,
.road-seg.south {
  left: 50%;
  width: 24px;
  margin-left: -12px;
}

.road-seg.north {
  top: 0;
  height: 50%;
}

.road-seg.south {
  bottom: 0;
  height: 50%;
}

.road-seg.north > .lane-mark::before,
.road-seg.south > .lane-mark::before,
.road-core > .lane-mark::before {
  width: 4px;
  background: repeating-linear-gradient(180deg, #fff3c5 0 8px, transparent 8px 14px);
}

.road-seg.east,
.road-seg.west {
  top: 50%;
  height: 24px;
  margin-top: -12px;
}

.road-seg.east {
  right: 0;
  width: 50%;
}

.road-seg.west {
  left: 0;
  width: 50%;
}

.road-seg.east > .lane-mark::before,
.road-seg.west > .lane-mark::before {
  height: 4px;
}

.road-core > .lane-mark::before {
  width: 4px;
  height: 4px;
}

.tile-crowd {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  transform: rotateX(-58deg) translateY(-12px) translateZ(24px) scale(1.08);
}

.visitor {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid rgba(25, 37, 52, 0.18);
  box-shadow: 0 3px 8px rgba(25, 37, 52, 0.16);
  animation: bob 1.2s ease-in-out infinite;
}

.visitor.v1 {
  background: #ff8b5c;
}

.visitor.v2 {
  background: #5cb8ff;
}

.visitor.v3 {
  background: #8fce6a;
}

.visitor.v4 {
  background: #ffd166;
}

.entrance-glow {
  position: absolute;
  left: 50%;
  bottom: 10px;
  width: 22px;
  height: 22px;
  margin-left: -11px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.9) 0%, rgba(255, 215, 102, 0.58) 45%, rgba(255, 215, 102, 0) 74%);
  animation: pulse 1.8s ease-out infinite;
}

.tile-live-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(46, 139, 87, 0.15);
  transform: rotateX(-58deg) translateZ(28px);
}

.tile-icon {
  font-size: 22px;
  line-height: 1;
  opacity: 0.72;
  transform: translateY(-8px);
  filter: drop-shadow(0 3px 8px rgba(25, 37, 52, 0.1));
}

.facility-block {
  position: absolute;
  inset: 0;
  border-radius: 0;
  transform-style: preserve-3d;
  filter: drop-shadow(0 18px 14px rgba(25, 37, 52, 0.2));
}

.facility-art,
.facility-side {
  position: absolute;
  border-radius: 0;
}

.facility-art {
  inset: 10px 10px 12px 10px;
  transform: translateZ(22px);
  border-radius: 4px;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.22) inset,
    0 10px 14px rgba(25, 37, 52, 0.16);
}

.tile.size-2 .facility-art,
.tile.size-2 .facility-side {
  background-size: 200% 200%;
}

.tile.size-2 .facility-art {
  inset: 8px 8px 10px 8px;
}

.facility-front {
  left: 10px;
  right: 0;
  top: calc(100% - 2px);
  height: 14px;
  transform-origin: center top;
  transform: skewX(-50deg);
  filter: brightness(0.74) saturate(0.92);
  border-radius: 0 0 3px 3px;
}

.facility-right {
  top: 10px;
  right: -14px;
  bottom: 0;
  width: 14px;
  transform-origin: left center;
  transform: skewY(-40deg);
  filter: brightness(0.6) saturate(0.88);
  border-radius: 0 3px 3px 0;
}

.carousel-art {
  background:
    radial-gradient(circle at 50% 48%, #ffe6a6 0 18%, transparent 18%),
    radial-gradient(circle at 50% 48%, #ff8f6a 0 28%, transparent 28%),
    conic-gradient(from 0deg, #ffdb82 0 20%, #ff8c60 20% 40%, #ffd990 40% 60%, #7fc5ff 60% 80%, #ffe7ab 80% 100%);
  box-shadow: inset 0 0 0 6px rgba(255, 248, 223, 0.45);
}

.carousel-art::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 14%;
  bottom: 18%;
  width: 8px;
  margin-left: -4px;
  background: linear-gradient(180deg, #fff6cf 0%, #c89046 100%);
  box-shadow:
    -16px 18px 0 -2px rgba(255, 248, 223, 0.86),
    16px 18px 0 -2px rgba(255, 248, 223, 0.86);
}

.carousel-art::after {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  top: 18%;
  height: 18%;
  background:
    repeating-conic-gradient(from 0deg, #ffd66c 0 18deg, #ff8f60 18deg 36deg);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.coaster-art {
  background:
    linear-gradient(180deg, #cde9ff 0%, #f4fbff 38%, #c9e18c 38%, #93bc59 100%);
}

.facility-art.coaster-art::before {
  content: "";
  position: absolute;
  inset: 6% 5%;
  background:
    radial-gradient(circle at 18% 78%, rgba(255,255,255,0.28) 0 10%, transparent 10%),
    linear-gradient(180deg, transparent 0 20%, rgba(214, 64, 38, 0.98) 20% 27%, transparent 27% 100%),
    linear-gradient(135deg, transparent 0 12%, rgba(92, 55, 31, 0.98) 12% 15%, transparent 15% 28%, rgba(92, 55, 31, 0.98) 28% 31%, transparent 31% 46%, rgba(92, 55, 31, 0.98) 46% 49%, transparent 49% 64%, rgba(92, 55, 31, 0.98) 64% 67%, transparent 67% 100%),
    linear-gradient(180deg, transparent 0 54%, rgba(92, 55, 31, 0.98) 54% 60%, transparent 60% 100%);
}

.facility-art.coaster-art::after {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 10%;
  top: 12%;
  background:
    radial-gradient(circle at 18% 70%, #f04f33 0 7%, transparent 7.5%),
    linear-gradient(135deg, transparent 0 14%, #d9412b 14% 19%, transparent 19% 100%),
    linear-gradient(180deg, transparent 0 18%, #ffdf7d 18% 20%, transparent 20% 100%);
  clip-path: polygon(0 72%, 10% 62%, 22% 34%, 38% 18%, 55% 26%, 72% 54%, 100% 70%, 100% 80%, 0 80%);
  filter: drop-shadow(0 10px 8px rgba(25, 37, 52, 0.18));
}

.coaster-art.facility-front {
  background: linear-gradient(180deg, #8ab153 0%, #679140 100%);
}

.coaster-art.facility-right {
  background: linear-gradient(180deg, #78a149 0%, #567b37 100%);
}

.food-art {
  background:
    linear-gradient(180deg, #ffe4d8 0 24%, #ff9b72 24% 100%);
}

.food-art::before {
  content: "";
  position: absolute;
  left: 14%;
  right: 14%;
  top: 10%;
  height: 26%;
  background:
    repeating-linear-gradient(90deg, #ffefc5 0 10px, #ff9b72 10px 20px);
}

.food-art::after {
  content: "";
  position: absolute;
  left: 22%;
  right: 22%;
  bottom: 16%;
  height: 24%;
  background: linear-gradient(180deg, #7c4a2c 0%, #63391f 100%);
  box-shadow:
    -14px -12px 0 -6px rgba(255, 250, 240, 0.86),
    14px -12px 0 -6px rgba(255, 250, 240, 0.86);
}

.drink-art {
  background:
    linear-gradient(180deg, #d6efff 0%, #9bd5ff 100%);
}

.drink-art::before {
  content: "";
  position: absolute;
  left: 38%;
  right: 38%;
  top: 14%;
  bottom: 18%;
  background: linear-gradient(180deg, rgba(255,255,255,0.88) 0%, rgba(63, 158, 255, 0.42) 100%);
  border-radius: 0 0 8px 8px;
  border: 2px solid rgba(255,255,255,0.72);
}

.drink-art::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 8%;
  width: 3px;
  height: 24%;
  background: #ff8b8b;
  transform: translateX(-50%) rotate(16deg);
}

.restroom-art {
  background:
    linear-gradient(180deg, #d6efff 0%, #8acdf8 100%);
}

.firstaid-art {
  background:
    linear-gradient(180deg, #ffe1df 0%, #ffafab 100%);
}

.decor-art {
  background:
    radial-gradient(circle at 50% 36%, #8fcd74 0 26%, transparent 26%),
    linear-gradient(180deg, transparent 0 52%, #7b5538 52% 72%, transparent 72% 100%),
    linear-gradient(180deg, #e2f0d4 0%, #b7d998 100%);
}

.fountain-art {
  background:
    radial-gradient(circle at 50% 56%, #9edcff 0 22%, transparent 22%),
    linear-gradient(180deg, #effaff 0%, #9fd4f8 100%);
}

.garden-art {
  background:
    radial-gradient(circle at 32% 36%, #ff8fa6 0 10%, transparent 10%),
    radial-gradient(circle at 64% 44%, #ffd166 0 10%, transparent 10%),
    linear-gradient(180deg, #e9f5db 0%, #bddd9f 100%);
}

.power-art {
  background:
    linear-gradient(180deg, #d8dbe0 0%, #9ea4af 100%);
}

.drop-art {
  background:
    linear-gradient(180deg, #d9edf9 0%, #9fd3f1 100%);
}

.wheel-art {
  background:
    linear-gradient(180deg, #dff0ff 0%, #b8ddff 100%);
}

.drop-art::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 8%;
  bottom: 14%;
  width: 12px;
  margin-left: -6px;
  background: linear-gradient(180deg, #ffd575 0%, #c65d24 100%);
  box-shadow: 0 0 0 2px rgba(255,255,255,0.34) inset;
}

.drop-art::after {
  content: "";
  position: absolute;
  left: 26%;
  right: 26%;
  top: 12%;
  height: 18%;
  background: linear-gradient(180deg, #ff9158 0%, #cf4c29 100%);
  border-radius: 3px;
  box-shadow:
    0 20px 0 -3px rgba(255, 173, 93, 0.92),
    0 40px 0 -3px rgba(255, 173, 93, 0.92);
}

.wheel-art::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 8%;
  width: 56%;
  height: 56%;
  margin-left: -28%;
  border-radius: 50%;
  border: 5px solid rgba(255, 214, 127, 0.94);
  box-shadow:
    0 0 0 4px rgba(127, 197, 255, 0.52) inset,
    0 0 0 1px rgba(255,255,255,0.52);
}

.wheel-art::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 14%;
  width: 46%;
  height: 44%;
  margin-left: -23%;
  background:
    linear-gradient(65deg, transparent 47%, #7d5a3d 47% 53%, transparent 53%),
    linear-gradient(-65deg, transparent 47%, #7d5a3d 47% 53%, transparent 53%),
    linear-gradient(180deg, transparent 0 68%, #7d5a3d 68% 76%, transparent 76% 100%);
}

.wheel-art.facility-front {
  background: linear-gradient(180deg, #9fc2da 0%, #6e94ac 100%);
}

.wheel-art.facility-right {
  background: linear-gradient(180deg, #8bb0ca 0%, #5f8196 100%);
}

.drop-art.facility-front {
  background: linear-gradient(180deg, #98bfd8 0%, #6f97b1 100%);
}

.drop-art.facility-right {
  background: linear-gradient(180deg, #83a8c0 0%, #5a7d95 100%);
}

.tile.root-q0 .facility-art,
.tile.part-q0 .facility-art,
.tile.root-q0 .facility-side,
.tile.part-q0 .facility-side {
  background-position: left top;
}

.tile.root-q1 .facility-art,
.tile.part-q1 .facility-art,
.tile.root-q1 .facility-side,
.tile.part-q1 .facility-side {
  background-position: right top;
}

.tile.root-q2 .facility-art,
.tile.part-q2 .facility-art,
.tile.root-q2 .facility-side,
.tile.part-q2 .facility-side {
  background-position: left bottom;
}

.tile.root-q3 .facility-art,
.tile.part-q3 .facility-art,
.tile.root-q3 .facility-side,
.tile.part-q3 .facility-side {
  background-position: right bottom;
}

.tile-label {
  position: absolute;
  left: 8px;
  bottom: 8px;
  padding: 4px 7px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.76);
  color: rgba(25, 37, 52, 0.62);
}

.tile.empty .tile-label {
  display: none;
}

.tile.path {
  background: #d4d0c8;
  border-color: rgba(104, 108, 114, 0.42);
}

.tile.path::before {
  display: none;
}

.tile.entrance {
  background: linear-gradient(180deg, #fff3b6 0%, #ffd766 100%);
}

.tile.ride {
  background: linear-gradient(180deg, #ffd9a4 0%, #ffb15b 100%);
}

.tile.coaster {
  background: linear-gradient(180deg, #ffd29f 0%, #ff9d4d 100%);
}

.tile.carousel {
  background: linear-gradient(180deg, #ffe0b6 0%, #ffb96f 100%);
}

.tile.food {
  background: linear-gradient(180deg, #ffc3af 0%, #ff8f69 100%);
}

.tile.drink,
.tile.firstaid {
  background: linear-gradient(180deg, #d6efff 0%, #9bd5ff 100%);
}

.tile.restroom {
  background: linear-gradient(180deg, #c7e8ff 0%, #83c9f7 100%);
}

.tile.decor {
  background: linear-gradient(180deg, #d8f3c6 0%, #95cb73 100%);
}

.tile.fountain,
.tile.garden {
  background: linear-gradient(180deg, #d8f3c6 0%, #95cb73 100%);
}

.tile.power {
  background: linear-gradient(180deg, #d8dbe0 0%, #9ea4af 100%);
}

.tile.drop,
.tile.wheel {
  background: linear-gradient(180deg, #ffd29f 0%, #ff9d4d 100%);
}

.tile.part .tile-label,
.tile.part .tile-icon {
  opacity: 0.2;
}

.tile.part .facility-art {
  inset: 0;
  border-radius: 0;
}

.tile.part .facility-right {
  right: -18px;
}

.tile.part .facility-front {
  right: -10px;
}

.tile.disconnected {
  box-shadow:
    inset 0 0 0 2px rgba(182, 69, 69, 0.42),
    0 0 0 1px rgba(182, 69, 69, 0.16);
}

.tile.disconnected::before {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.26), transparent 40%),
    linear-gradient(180deg, transparent 62%, rgba(72, 104, 48, 0.08) 100%),
    linear-gradient(180deg, rgba(182, 69, 69, 0.18), rgba(182, 69, 69, 0.08));
}

.tile.dragging {
  transform: translateY(-2px) scale(1.02);
  box-shadow:
    0 0 0 3px rgba(239, 123, 69, 0.22);
}

@keyframes bob {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2px);
  }
}

@keyframes pulse {
  0% {
    transform: scale(0.7);
    opacity: 0.7;
  }
  70% {
    transform: scale(1.5);
    opacity: 0;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.insight-card {
  padding: 16px 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
}

.daily-report {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid rgba(25, 37, 52, 0.08);
}

.daily-report.hidden {
  display: none;
}

.report-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.report-card {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
}

.report-card span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.report-card strong {
  display: block;
  font-size: 20px;
}

.bottom-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.bottom-actions,
.bottom-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.log-panel {
  background: linear-gradient(180deg, var(--panel-strong) 0%, rgba(255, 248, 240, 0.88) 100%);
}

.log {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.log-entry {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
}

.log-entry strong {
  display: block;
  margin-bottom: 4px;
}

.log-entry p {
  color: var(--muted);
  line-height: 1.5;
}

.delta-positive {
  color: var(--success);
}

.delta-negative {
  color: var(--danger);
}

@media (max-width: 960px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .workspace-shell {
    grid-template-columns: 1fr;
  }

  .hud-strip,
  .insight-grid,
  .report-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .board {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 16px;
  }

  h1 {
    font-size: 34px;
  }

  .hero-card,
  .build-panel,
  .tips-panel,
  .hud-panel,
  .board-panel,
  .log-panel {
    padding: 18px;
  }

  .board {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .actions,
  .hud-strip,
  .insight-grid,
  .report-grid {
    grid-template-columns: 1fr;
  }

  .bottom-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .operation-strip {
    grid-template-columns: 1fr;
  }

  .board-header,
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .board-status {
    flex-wrap: wrap;
  }
}

/* Three.js board overrides */
.board-stage {
  padding: 18px 18px 28px;
  background:
    linear-gradient(180deg, rgba(182, 223, 255, 0.92) 0%, rgba(205, 234, 255, 0.74) 30%, rgba(233, 243, 216, 0.94) 30%, rgba(230, 237, 211, 0.98) 100%);
  perspective: none;
}

.board-stage::before {
  display: none;
}

.board-stage::after {
  left: 16%;
  right: 16%;
  bottom: 18px;
  height: 22px;
  background: rgba(66, 90, 52, 0.18);
  filter: blur(14px);
}

.board {
  position: relative;
  display: block;
  height: 620px;
  margin: 28px 0 16px;
  border-radius: 18px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 8%, rgba(255, 255, 255, 0.5), transparent 30%),
    linear-gradient(180deg, #bfe3ff 0%, #d7efff 36%, #dbe8b9 36%, #d4e2b2 100%);
  transform: none;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.75),
    0 20px 34px rgba(49, 71, 28, 0.12);
}

.board canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.scene-fallback {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  padding: 24px;
  text-align: center;
  color: var(--accent-dark);
  background: rgba(255, 255, 255, 0.6);
}

.report-modal {
  position: fixed;
  inset: 0;
  z-index: 30;
}

.report-modal.hidden {
  display: none;
}

.report-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(25, 37, 52, 0.44);
  backdrop-filter: blur(6px);
}

.report-dialog {
  position: relative;
  z-index: 1;
  width: min(860px, calc(100vw - 32px));
  margin: 8vh auto 0;
  padding: 24px;
  border-radius: 24px;
  background: rgba(255, 250, 243, 0.96);
  box-shadow: 0 28px 70px rgba(25, 37, 52, 0.28);
}

.report-modal-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.report-card.emphasis {
  background: linear-gradient(180deg, rgba(255, 236, 214, 0.96) 0%, rgba(255, 244, 232, 0.92) 100%);
}

.report-suggestions {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.report-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 18px;
}

.suggestion-card {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(25, 37, 52, 0.08);
  color: var(--muted);
  line-height: 1.55;
}