:root {
  --bg: #20324a;
  --panel: rgba(29, 39, 46, 0.88);
  --line: rgba(255, 224, 181, 0.24);
  --text: #fff8ec;
  --dim: #c8c3b5;
  --amber: #f0b45e;
  --amber-ink: #3a240f;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.hidden {
  display: none !important;
}

#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.topbar {
  position: absolute;
  top: max(10px, env(safe-area-inset-top));
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 0 12px;
}

.clock {
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--dim);
  background: rgba(10, 13, 21, 0.62);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 7px 10px;
}

.actions {
  display: flex;
  gap: 8px;
  pointer-events: auto;
}

.interact {
  position: fixed;
  left: 50%;
  bottom: max(82px, calc(env(safe-area-inset-bottom) + 62px));
  z-index: 20;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 10px 20px;
  border: 1px solid rgba(255, 240, 205, 0.75);
  border-radius: 8px;
  background: #f0b45e;
  color: #3a240f;
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  pointer-events: auto;
  box-shadow: 0 10px 26px rgba(14, 23, 35, 0.32);
}

.home-action {
  position: fixed;
  left: 0;
  right: 0;
  bottom: max(20px, env(safe-area-inset-bottom));
  z-index: 20;
  width: max-content;
  margin: 0 auto;
  min-width: 118px;
  pointer-events: auto;
  box-shadow: 0 10px 26px rgba(14, 23, 35, 0.3);
}

.home-action:active {
  transform: translateY(1px);
}

.interact:active {
  transform: translateX(-50%) translateY(1px);
}

.interact-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #8c4a19;
  box-shadow: 0 0 0 4px rgba(140, 74, 25, 0.16);
}

.btn {
  font: inherit;
  font-size: 14px;
  color: var(--text);
  background: rgba(35, 46, 53, 0.82);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  min-height: 40px;
  cursor: pointer;
  user-select: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn.primary {
  background: var(--amber);
  border-color: transparent;
  color: var(--amber-ink);
  font-weight: 700;
}

.btn.icon {
  min-width: 40px;
  padding: 0;
  font-size: 18px;
  line-height: 1;
}

.shake {
  animation: shake 0.36s ease-in-out;
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-4px);
  }
  50% {
    transform: translateX(4px);
  }
  75% {
    transform: translateX(-2px);
  }
}

.btn.big {
  padding: 12px 22px;
  font-size: 16px;
}

.panel.sheet {
  position: absolute;
  left: 50%;
  bottom: max(12px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  width: min(560px, calc(100vw - 24px));
  max-height: calc(100dvh - 84px);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px 14px;
  pointer-events: auto;
  backdrop-filter: blur(6px);
}

.panel header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.panel h2 {
  margin: 0;
  font-size: 17px;
}

.note {
  margin: 6px 0 10px;
  color: var(--dim);
  font-size: 12px;
}

.items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 8px;
}

.item-group {
  grid-column: 1 / -1;
  margin: 4px 0 -2px;
  color: var(--dim);
  font-size: 11px;
  font-weight: 700;
}

.item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  text-align: left;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}

.item small {
  display: block;
  color: var(--dim);
  font-size: 11px;
  margin-top: 3px;
}

.item .price {
  color: #ffd9a0;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.item.bought {
  border-color: rgba(232, 163, 76, 0.6);
  background: rgba(232, 163, 76, 0.12);
}

.item.selected {
  border-color: rgba(240, 180, 94, 0.86);
  background: rgba(240, 180, 94, 0.17);
}

.config-summary {
  position: sticky;
  bottom: -14px;
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 2px;
  padding: 12px 0 2px;
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.quantity-summary {
  position: sticky;
  bottom: -14px;
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 2px;
  padding: 10px 0 2px;
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.selected-title {
  color: var(--dim);
  font-size: 11px;
  font-weight: 700;
}

.selected-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
  max-height: 168px;
  overflow-y: auto;
}

.selected-item {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
}

.selected-name {
  flex: 1;
  font-size: 12px;
}

.selected-count {
  margin-left: 6px;
  color: #ffd9a0;
  font-variant-numeric: tabular-nums;
}

.selected-step {
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font: inherit;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}

.selected-empty {
  color: var(--dim);
  font-size: 12px;
}

.quantity-summary .btn {
  align-self: flex-end;
}

.btn:disabled {
  opacity: 0.42;
  cursor: default;
}

.piece-card {
  display: flex;
  flex: 1 1 148px;
  align-items: center;
  gap: 8px;
  min-width: 148px;
  padding: 6px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-size: 13px;
}

.piece-card.on {
  border-color: rgba(232, 163, 76, 0.7);
  background: rgba(232, 163, 76, 0.16);
}

.piece-label {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.piece-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.piece-name {
  font-size: 13px;
}

.piece-weight {
  color: var(--dim);
  font-size: 10px;
  line-height: 1.2;
  white-space: nowrap;
}

.piece-count {
  color: #ffd9a0;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.piece-step {
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font: inherit;
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
}

.piece-step:disabled {
  opacity: 0.3;
  cursor: default;
}

.extra {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pieces {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.extra .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.weigh-result {
  flex: 1;
  font-size: 14px;
  line-height: 1.5;
  color: #ffd9a0;
  font-variant-numeric: tabular-nums;
}

.floats,
.toasts {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.float {
  position: absolute;
  transform: translate(-50%, -100%);
  color: #ffd9a0;
  font-size: 15px;
  white-space: nowrap;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.9);
  will-change: transform, opacity;
}

.purchase-pop {
  position: fixed;
  z-index: 30;
  transform: translate(-50%, -100%);
  padding: 6px 10px;
  border-radius: 6px;
  background: rgba(255, 248, 235, 0.96);
  border: 1px solid rgba(105, 66, 39, 0.18);
  color: #52331f;
  font-size: 13px;
  font-weight: 700;
  max-width: min(82vw, 420px);
  line-height: 1.4;
  text-align: center;
  white-space: normal;
  pointer-events: none;
  box-shadow: 0 6px 18px rgba(15, 20, 28, 0.24);
  opacity: 1;
  transition:
    transform 1.5s cubic-bezier(0.16, 1, 0.3, 1),
    opacity 0.38s ease 0.9s;
}

.purchase-pop.leaving {
  opacity: 0;
  transform: translate(-50%, -155%);
}

.toasts {
  inset: auto 0 auto 0;
  top: calc(max(10px, env(safe-area-inset-top)) + 52px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.toast {
  background: rgba(12, 15, 23, 0.9);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.45;
  max-width: min(88vw, 480px);
  text-align: center;
  animation: toast-in 0.18s ease-out, toast-out 0.3s ease-in 1.7s forwards;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
}

@keyframes toast-out {
  to {
    opacity: 0;
    transform: translateY(-4px);
  }
}

.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(4, 6, 10, 0.55);
  pointer-events: auto;
}

.card {
  width: min(420px, 100%);
  max-height: min(78vh, 640px);
  overflow: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  backdrop-filter: blur(8px);
}

.card h3 {
  margin: 0 0 12px;
  font-size: 17px;
}

.guess-field {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 0 18px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  font-variant-numeric: tabular-nums;
  color: #ffd9a0;
}

.guess-field span {
  font-size: 24px;
  font-weight: 700;
}

.guess-field input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  padding: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 38px;
  font-weight: 700;
  appearance: textfield;
}

.guess-field input::-webkit-inner-spin-button,
.guess-field input::-webkit-outer-spin-button {
  margin: 0;
  appearance: none;
}

.guess-field small {
  font-size: 15px;
  color: var(--dim);
}

.row {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.receipt {
  width: min(460px, 100%);
  animation: receipt-in 0.34s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.receipt-head {
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.14);
}

.receipt h3 {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  color: #ffd9a0;
  text-shadow: 0 2px 24px rgba(240, 180, 94, 0.38);
}

.receipt-comment {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--dim);
}

.receipt-hero {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 10px;
  padding: 16px 0 12px;
}

.receipt-hero.solo {
  grid-template-columns: minmax(0, 1fr);
}

.receipt-hero.solo .hero-cell:not(:first-child) {
  display: none;
}

.hero-cell {
  min-width: 0;
  animation: hero-in 0.32s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero-cell:nth-child(2) {
  animation-delay: 80ms;
}

.hero-cell:nth-child(3) {
  animation-delay: 160ms;
}

.hero-label {
  display: block;
  font-size: 11px;
  color: var(--dim);
}

.hero-value {
  display: block;
  margin-top: 3px;
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  white-space: nowrap;
}

.hero-cell.accent {
  grid-column: 1 / -1;
  padding: 10px 14px 12px;
  border: 1px solid rgba(240, 180, 94, 0.32);
  border-radius: 8px;
  background: rgba(240, 180, 94, 0.1);
}

.hero-cell.accent .hero-value {
  margin-top: 0;
  font-size: 40px;
  line-height: 1.1;
  color: #ffd9a0;
  text-shadow: 0 2px 22px rgba(240, 180, 94, 0.45);
}

.receipt-dir {
  margin: 0 0 10px;
  font-size: 12.5px;
  color: var(--dim);
}

.receipt .lines {
  padding-top: 10px;
  border-top: 1px dashed rgba(255, 255, 255, 0.14);
}

.receipt-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 8px;
}

.receipt-actions .btn {
  width: 100%;
  min-height: 42px;
}

.lines {
  margin-bottom: 12px;
}

.lines .line:last-child {
  border-bottom: 0;
}

@keyframes receipt-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.985);
  }
}

@keyframes hero-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .receipt,
  .hero-cell {
    animation: none;
  }
}

.line {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 5px 0;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
}

.line .name {
  color: var(--text);
}

.line .tip {
  color: var(--dim);
  font-size: 11px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 14px;
}

.stat {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 8px;
  padding: 8px 10px;
}

.stat b {
  display: block;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  color: #ffd9a0;
}

.stat span {
  font-size: 11px;
  color: var(--dim);
}

.receipt .btn.big {
  width: 100%;
}

.start {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  background: linear-gradient(to bottom, rgba(24, 36, 53, 0.55), rgba(14, 22, 34, 0.86));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.start h1 {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  color: #fff7e8;
  text-shadow: 0 2px 18px rgba(255, 190, 112, 0.28);
}

.start-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 0 24px;
  text-align: center;
}

.subtitle {
  margin: 0;
  font-size: 16px;
  color: var(--dim);
}

.intro {
  gap: 22px;
  padding: 24px;
  text-align: center;
}

.intro h2 {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  color: #fff7e8;
  text-shadow: 0 2px 18px rgba(255, 190, 112, 0.28);
}

.intro .steps {
  counter-reset: step;
  display: grid;
  gap: 14px;
  max-width: 520px;
  margin: 0;
  padding: 0;
  list-style: none;
  text-align: left;
}

.intro .steps li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 18px;
  line-height: 1.65;
  color: var(--text);
}

.intro .steps li::before {
  counter-increment: step;
  content: counter(step);
  flex: 0 0 26px;
  height: 26px;
  margin-top: 3px;
  border: 1px solid rgba(240, 180, 94, 0.5);
  border-radius: 50%;
  background: rgba(240, 180, 94, 0.16);
  color: var(--amber);
  font-size: 13px;
  font-weight: 700;
  line-height: 26px;
  text-align: center;
}

.intro .btn.big {
  padding: 13px 26px;
  font-size: 17px;
}

@media (max-width: 420px) {
  .actions {
    gap: 6px;
  }

  .btn {
    padding: 8px 9px;
    font-size: 13px;
  }

  .clock {
    padding: 7px 8px;
    font-size: 13px;
  }

  .start h1 {
    font-size: 25px;
  }

  .start .subtitle {
    font-size: 15px;
  }

  .intro h2 {
    font-size: 24px;
  }

  .intro .steps {
    gap: 12px;
  }

  .intro .steps li {
    font-size: 16px;
  }

  .receipt h3 {
    font-size: 26px;
  }

  .receipt-hero {
    gap: 10px 8px;
  }

  .hero-value {
    font-size: 18px;
  }

  .hero-cell.accent .hero-value {
    font-size: 34px;
  }
}