:root {
  color-scheme: light;
  font-family: "Arial Rounded MT Bold", "Noto Sans TC", system-ui, sans-serif;
  background: #d9f2ff;
  color: #17314f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 14% 11%, rgba(255, 228, 111, 0.9), transparent 20rem),
    linear-gradient(180deg, #bdeaff 0%, #f8f4ce 58%, #8bd87d 100%);
  overflow-x: hidden;
}

button,
select {
  font: inherit;
}

.shape-game {
  width: min(100%, 760px);
  min-height: 100vh;
  margin: 0 auto;
  padding: calc(14px + env(safe-area-inset-top)) 14px calc(24px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.topbar {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 10px;
  align-items: center;
}

.home-link,
.soft-btn,
.result-card button,
.result-card a {
  min-height: 44px;
  border: 0;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.9);
  color: #17314f;
  box-shadow: 0 8px 18px rgba(38, 79, 113, 0.18);
  font-weight: 900;
  text-decoration: none;
}

.home-link {
  display: grid;
  place-items: center;
  font-size: 1.4rem;
}

.title-block p,
.title-block h1 {
  margin: 0;
}

.title-block p {
  font-size: 0.74rem;
  font-weight: 900;
  color: rgba(23, 49, 79, 0.68);
}

.title-block h1 {
  font-size: clamp(1.25rem, 5vw, 2.2rem);
  line-height: 1.02;
}

.language-picker {
  min-width: 112px;
  display: grid;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 900;
  color: rgba(23, 49, 79, 0.7);
}

.language-picker select {
  width: 100%;
  border: 0;
  border-radius: 12px;
  padding: 8px 9px;
  background: rgba(255, 255, 255, 0.9);
  color: #17314f;
  font-weight: 900;
}

.menu-panel,
.play-panel {
  flex: 1;
  display: grid;
  align-content: start;
  gap: 14px;
}

.cover {
  width: 100%;
  aspect-ratio: 1.18 / 1;
  border-radius: 22px;
  object-fit: cover;
  object-position: center;
  box-shadow: 0 18px 38px rgba(38, 79, 113, 0.22);
}

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

.menu-copy strong {
  font-size: 1.35rem;
}

.menu-copy span {
  color: rgba(23, 49, 79, 0.72);
  font-weight: 800;
}

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

.stage-card {
  min-height: 94px;
  border: 0;
  border-radius: 18px;
  padding: 12px;
  display: grid;
  gap: 5px;
  text-align: left;
  background: linear-gradient(145deg, #fff5d4, #ffffff);
  color: #17314f;
  box-shadow: 0 10px 22px rgba(38, 79, 113, 0.17);
  font-weight: 900;
}

.stage-card.locked {
  filter: grayscale(1);
  opacity: 0.58;
}

.stage-card b {
  font-size: 2rem;
}

.stage-card span {
  color: rgba(23, 49, 79, 0.68);
}

.play-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: center;
}

.soft-btn {
  padding: 0 14px;
}

.progress-line {
  display: grid;
  gap: 5px;
  font-weight: 900;
}

.progress-line div,
.loading-card div {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
}

.progress-line i,
.loading-card i {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #ffca3a, #55c7ff);
  transition: width 0.28s ease;
}

.train-track {
  min-height: 255px;
  border-radius: 28px;
  padding: 18px 12px 28px;
  display: grid;
  align-content: end;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.48)),
    url("../../assets/shape-train-cover.png") center / cover;
  box-shadow: inset 0 0 0 1000px rgba(255, 255, 255, 0.34), 0 18px 34px rgba(38, 79, 113, 0.2);
}

.car-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  align-items: end;
}

.train-car {
  height: clamp(94px, 24vw, 132px);
  border: 4px solid rgba(255, 255, 255, 0.85);
  border-radius: 20px 20px 14px 14px;
  display: grid;
  place-items: center;
  position: relative;
  box-shadow: 0 12px 22px rgba(27, 75, 102, 0.2);
  touch-action: manipulation;
}

.train-car::before,
.train-car::after {
  content: "";
  position: absolute;
  bottom: -14px;
  width: 19px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #23364d;
  border: 4px solid #fff;
}

.train-car::before {
  left: 14px;
}

.train-car::after {
  right: 14px;
}

.train-car span {
  display: grid;
  place-items: center;
  width: 58px;
  aspect-ratio: 1;
  color: rgba(255, 255, 255, 0.95);
  font-size: 2.35rem;
  filter: drop-shadow(0 3px 4px rgba(0, 0, 0, 0.18));
}

.train-car.target {
  animation: glow 0.65s ease infinite alternate;
}

.train-car.correct {
  animation: pop 0.35s ease;
}

.passenger-area {
  min-height: 182px;
  border-radius: 24px;
  padding: 14px;
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.62);
}

.passenger-area p {
  min-height: 1.35em;
  margin: 0;
  color: rgba(23, 49, 79, 0.76);
  font-weight: 900;
}

.passenger {
  width: min(42vw, 150px);
  aspect-ratio: 1;
  border: 6px solid rgba(255, 255, 255, 0.92);
  border-radius: 32px;
  display: grid;
  place-items: center;
  background: #fff;
  box-shadow: 0 16px 28px rgba(38, 79, 113, 0.22);
  touch-action: none;
}

.passenger span {
  display: block;
  width: 76%;
  aspect-ratio: 1;
}

.shape-circle {
  border-radius: 50%;
}

.shape-square {
  border-radius: 18%;
}

.shape-triangle {
  clip-path: polygon(50% 5%, 95% 92%, 5% 92%);
}

.shape-star {
  clip-path: polygon(50% 0%, 62% 34%, 98% 35%, 69% 56%, 79% 91%, 50% 70%, 21% 91%, 31% 56%, 2% 35%, 38% 34%);
}

.shape-diamond {
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

.shape-heart {
  clip-path: path("M 50 88 C 20 64 5 48 12 28 C 18 10 40 10 50 26 C 60 10 82 10 88 28 C 95 48 80 64 50 88 Z");
}

.feedback {
  min-height: 28px;
  text-align: center;
  font-weight: 900;
  color: #17314f;
}

.wrong {
  animation: shake 0.28s ease;
}

.hidden {
  display: none !important;
}

.loading-panel,
.result-panel {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(24, 48, 72, 0.44);
  backdrop-filter: blur(8px);
}

.loading-card,
.result-card {
  width: min(92vw, 420px);
  border-radius: 24px;
  padding: 22px;
  display: grid;
  gap: 12px;
  background: #fffdf2;
  color: #17314f;
  text-align: center;
  box-shadow: 0 24px 50px rgba(18, 48, 70, 0.28);
  animation: cardIn 0.28s ease both;
}

.result-card strong {
  font-size: 1.65rem;
}

.stars {
  color: #ffb300;
  font-size: 2.1rem;
}

.result-card button,
.result-card a {
  display: grid;
  place-items: center;
  padding: 10px 14px;
  background: #ffdf70;
}

.result-card button:nth-of-type(2),
.result-card button:nth-of-type(3) {
  background: rgba(255, 255, 255, 0.94);
}

@keyframes cardIn {
  from { transform: translateY(16px) scale(0.96); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

@keyframes pop {
  50% { transform: scale(1.06); }
}

@keyframes glow {
  from { transform: translateY(0); }
  to { transform: translateY(-5px); }
}

@keyframes shake {
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

@media (max-width: 430px) {
  .shape-game {
    padding-inline: 10px;
    gap: 10px;
  }

  .topbar {
    grid-template-columns: 44px 1fr 104px;
  }

  .cover {
    aspect-ratio: 1.04 / 1;
  }

  .train-track {
    min-height: 228px;
  }

  .car-grid {
    gap: 6px;
  }

  .train-car {
    border-width: 3px;
  }

  .train-car span {
    width: 46px;
    font-size: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}
html,
body,
button,
a,
canvas,
[role="button"] {
  -webkit-user-select: none;
  user-select: none;
}

input,
textarea,
select,
[contenteditable="true"] {
  -webkit-user-select: text;
  user-select: text;
}