:root {
  --ink: #17211f;
  --muted: #647069;
  --paper: #fff8ed;
  --green: #0f6b55;
  --green-deep: #083f34;
  --coral: #e35d45;
  --mango: #f2b544;
  --line: rgba(23, 33, 31, 0.14);
  --shadow: 0 24px 80px rgba(9, 22, 18, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(15, 107, 85, 0.1), rgba(227, 93, 69, 0.1)),
    var(--paper);
  font-family:
    "Noto Sans TC",
    "Microsoft JhengHei",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  letter-spacing: 0;
}

.quiz-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 60px;
}

.quiz-hero {
  padding: clamp(34px, 7vw, 76px) 0 28px;
}

nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 52px;
}

nav a {
  color: var(--green-deep);
  font-weight: 900;
  text-decoration: none;
}

.quiz-hero p,
.question-card__count {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 0.84rem;
  font-weight: 900;
}

h1 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(3rem, 9vw, 7rem);
  line-height: 0.98;
}

.start-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  max-width: 680px;
  margin-top: 30px;
}

.start-form label {
  display: grid;
  gap: 8px;
}

.start-form span {
  color: var(--muted);
  font-weight: 800;
}

input,
button {
  min-height: 54px;
  border-radius: 8px;
  font: inherit;
}

input {
  width: 100%;
  padding: 0 16px;
  border: 1px solid var(--line);
  color: var(--ink);
  background: #fffdf8;
}

button {
  padding: 0 20px;
  border: 0;
  color: #fffaf2;
  background: var(--coral);
  font-weight: 900;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.quiz-stage,
.punishment-stage {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.quiz-stage[hidden],
.punishment-stage[hidden],
[hidden] {
  display: none;
}

.stage-status,
.punishment-result {
  min-height: 54px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: #fffdf8;
}

.stage-status[data-status="success"] {
  border-color: rgba(15, 107, 85, 0.3);
  color: var(--green-deep);
  background: rgba(15, 107, 85, 0.08);
}

.stage-status[data-status="error"],
.punishment-result {
  border-color: rgba(227, 93, 69, 0.3);
  color: var(--coral);
  background: rgba(227, 93, 69, 0.08);
}

.question-card {
  padding: clamp(18px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf8;
  box-shadow: var(--shadow);
}

.question-card h2 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 3rem);
  line-height: 1.18;
}

.question-media {
  margin: 0 0 22px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(23, 33, 31, 0.06);
}

.question-media img {
  display: block;
  width: 100%;
  max-height: min(46vh, 520px);
  object-fit: contain;
  background: #fffdf8;
}

.question-provider {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 850;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.option-button {
  min-height: 82px;
  padding: 16px;
  color: var(--ink);
  text-align: left;
  background: rgba(15, 107, 85, 0.08);
  border: 1px solid rgba(15, 107, 85, 0.16);
}

.option-button:hover,
.option-button:focus-visible {
  outline: none;
  border-color: rgba(15, 107, 85, 0.44);
  background: rgba(15, 107, 85, 0.13);
}

.punishment-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.punishment-card {
  position: relative;
  min-height: clamp(210px, 26vw, 300px);
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  perspective: 1200px;
  opacity: 0;
  transform: translateY(34px) rotate(-8deg) scale(0.94);
  transition:
    opacity 420ms ease,
    transform 420ms ease;
}

.punishment-card.is-dealt {
  opacity: 1;
  transform: translateY(0) rotate(0);
}

.punishment-grid.is-shuffling .punishment-card.is-dealt .card-inner {
  animation: cardSettle 820ms cubic-bezier(0.2, 0.72, 0.2, 1) both;
}

.card-inner {
  position: absolute;
  inset: 0;
  border-radius: 8px;
  box-shadow: var(--shadow);
  transform-style: preserve-3d;
  transition: transform 700ms cubic-bezier(0.2, 0.72, 0.2, 1);
}

.punishment-card.is-revealed .card-inner {
  transform: rotateY(180deg);
}

.card-face {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: space-between;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  backface-visibility: hidden;
}

.card-back {
  background:
    linear-gradient(135deg, rgba(227, 93, 69, 0.24), transparent),
    url("./assets/punishment-card-back.png") center / cover no-repeat,
    #180f12;
}

.card-front {
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(227, 93, 69, 0.12), rgba(242, 181, 68, 0.1)),
    #fffdf8;
  transform: rotateY(180deg);
}

.card-front span {
  color: var(--muted);
  font-weight: 800;
}

.card-front strong {
  overflow-wrap: anywhere;
  font-size: clamp(1.5rem, 3vw, 2.6rem);
  line-height: 1.1;
}

.punishment-result {
  font-weight: 900;
}

#nextQuestion {
  justify-self: start;
  background: var(--green-deep);
}

@keyframes cardSettle {
  0% {
    transform: translateY(-18px) rotate(-8deg);
  }
  42% {
    transform: translateY(8px) rotate(4deg);
  }
  72% {
    transform: translateY(-4px) rotate(-2deg);
  }
  100% {
    transform: translateY(0) rotate(0);
  }
}

@media (max-width: 840px) {
  .options-grid,
  .punishment-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .start-form {
    grid-template-columns: 1fr;
  }
}