:root {
  --ink: #1e2430;
  --muted: #687183;
  --line: #d9deea;
  --paper: #ffffff;
  --soft: #f4f7fb;
  --brand: #6f4bb6;
  --brand-dark: #4e327f;
  --good: #16833a;
  --bad: #b42318;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Poppins, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: #edf1f7;
}

button {
  font: inherit;
}

.app-shell {
  width: min(980px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 40px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
  margin-bottom: 20px;
}

h1.page-title,
h2.page-title {
  margin: 0;
  color: var(--brand);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.05;
}

h1 {
  margin: 0;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.05;
}

.progress-wrap {
  flex: 0 0 auto;
  text-align: right;
}

.quiz-progress,
.score {
  color: var(--muted);
  font-weight: 700;
}

.score {
  margin-top: 4px;
  color: var(--brand-dark);
}

.session-panel {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.session-panel label {
  font-weight: 800;
}

.session-panel select {
  min-height: 42px;
  padding: 0 36px 0 12px;
  color: var(--ink);
  background: #fff;
  border: 2px solid var(--line);
  border-radius: 8px;
  font: inherit;
  font-weight: 700;
}

.session-panel button,
.controls button {
  min-height: 44px;
  padding: 0 18px;
  color: #fff;
  background: var(--brand);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 800;
}

.stage {
  position: relative;
  min-height: 520px;
  padding: 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 18px 45px rgba(38, 45, 68, 0.12);
}

.character-wrap {
  position: relative;
  width: min(900px, 100%);
  min-height: 480px;
  margin: 0 auto;
  --scene-size: min(54%, 430px);
}

.character {
  position: absolute;
  left: 50%;
  bottom: 0;
  z-index: 1;
  width: var(--scene-size);
  height: auto;
  max-width: none;
  max-height: none;
  object-fit: contain;
  transform: translateX(-50%);
}

.comment-overlay {
  position: absolute;
  left: 50%;
  bottom: 0;
  z-index: 2;
  width: var(--scene-size);
  aspect-ratio: 1 / 1;
  transform: translateX(-50%);
  pointer-events: none;
}

.bubble-overlay {
  position: absolute;
  z-index: 2;
  left: 50%;
  width: 42%;
  aspect-ratio: 175 / 145;
  transform: translateX(-50%);
  filter: drop-shadow(0 10px 14px rgba(38, 45, 68, 0.2));
}

.bubble-overlay-a {
  top: 8%;
}

.bubble-overlay-b {
  top: 60%;
  width: 45%;
  aspect-ratio: 217 / 122;
}

.bubble-overlay img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: fill;
}

.bubble-overlay-b img {
  transform: translateY(-4px) rotate(180deg);
}

.bubble-overlay p {
  position: absolute;
  inset: 16% 14% 20%;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.1;
  text-align: center;
  overflow-wrap: anywhere;
}

.bubble-overlay-b p {
  inset: 13% 17% 19%;
  font-size: 13px;
}

.question-card {
  margin-top: 18px;
  padding: 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.prompt {
  margin: 0 0 16px;
  color: var(--brand-dark);
  font-size: 18px;
  font-weight: 800;
}

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

.option {
  min-height: 62px;
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: flex-start;
  padding: 12px 14px;
  color: var(--ink);
  background: #fff;
  border: 2px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  transition: border-color 120ms ease, transform 120ms ease, background 120ms ease;
}

.option:hover {
  transform: translateY(-1px);
  border-color: #a999d5;
}

.option[disabled] {
  cursor: default;
  transform: none;
}

.option.correct {
  border-color: var(--good);
  background: #ecfdf3;
}

.option.wrong {
  border-color: var(--bad);
  background: #fff1f0;
}

.marker {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  border: 2px solid #b8c0d1;
  border-radius: 50%;
}

.correct .marker,
.wrong .marker {
  border: 0;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.correct .marker {
  background-image: url("./assets/feedback/checkmark.svg");
}

.wrong .marker {
  background-image: url("./assets/feedback/crossmark.svg");
}

.feedback {
  min-height: 24px;
  margin: 14px 0 0;
  color: var(--muted);
  font-weight: 700;
}

.feedback.good {
  color: var(--good);
}

.feedback.bad {
  color: var(--bad);
}

.controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 18px;
}

.session-panel button:hover,
.controls button:hover {
  background: var(--brand-dark);
}

.session-panel button:disabled,
.controls button:disabled {
  cursor: default;
  opacity: 0.45;
}

@media (max-width: 760px) {
  .topbar,
  .stage {
    display: block;
  }

  .progress-wrap {
    margin-top: 10px;
    text-align: left;
  }

  .session-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .stage {
    padding: 18px;
    min-height: 430px;
  }

  .character-wrap {
    min-height: 390px;
    --scene-size: min(70%, 300px);
  }

  .character {
    width: var(--scene-size);
  }

  .bubble-overlay p {
    font-size: 12px;
  }

  .bubble-overlay {
    width: 48%;
  }

  .bubble-overlay-b {
    width: 52%;
  }

  .options {
    grid-template-columns: 1fr;
  }

  .controls {
    flex-wrap: wrap;
  }
}