body {
  font-family: 'Roboto', sans-serif;
  background-color: #f9f9f9;
  margin: 0;
  padding: 0;
}

.card1 {
  background: #fff;
  width: 80vw;
  margin: 4vh auto;
  padding: 2vw;
  border: 10px solid var(--main-accent-color);
  border-radius: 1vw;
  box-shadow: 0 0.4vw 0.8vw rgba(0, 0, 0, 0.6);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.content-container {
  display: flex;
  flex-direction: row;
  gap: 2vw;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.image-container {
  flex: 1 1 300px;
  text-align: center;
}

.quiz-image {
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.description-container {
  flex: 1 1 300px;
}

h2 {
  font-size: 2vw;
  color: #006780;
  margin-bottom: 1vw;
  font-weight: 800;
}

.description-container p {
  font-size: 1.2vw;
  text-align: justify;
  margin-bottom: 2vw;
}

.submit-button {
  font-size: 1.2vw;
  padding: 0.8vw 2vw;
  background-color: #006780;
  color: white;
  border: none;
  border-radius: 0.5vw;
  cursor: pointer;
  font-weight: bold;
}

  .submit-button:hover {
    background-color: #bdc3c7;
    box-shadow: 0 12px 16px rgba(0,0,0,0.24), 0 17px 50px rgba(0,0,0,0.19);
  }

  .submit-button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
  }

@media (max-width: 768px) {
  .content-container {
    flex-direction: column;
  }

  h2 {
    font-size: 5vw;
  }

  .description-container p {
    font-size: 3.5vw;
  }

  .submit-button {
    font-size: 3.5vw;
    padding: 3vw 6vw;
    height: auto;
    margin-top: 2vw;
  }
}

@media (max-width: 480px) {
  .card1 {
    padding: 5vw;
  }

  .submit-button {
    width: 100%;
    font-size: 4vw;
  }
}

.game-screen {
  height: 71vh;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  background: #fff;
  width: 85vw;
  margin: 4vh auto;
  padding: 2vw;
  border: 10px solid var(--main-accent-color);
  border-radius: 1vw;
  box-shadow: 0 0.4vw 0.8vw rgba(0, 0, 0, 0.6);
  position: absolute;
  top: 52%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.game-content {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: center;
}

.audio-card, .input-card {
  width: 50%;
  height: 20vw;
  padding: 4rem;
  background-color: #deefef;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}

.input-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
}

.input-wrapper {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

  .input-wrapper input {
    width: 80%;
    font-weight: bold;
    padding: 1rem;
    border-radius: 8px;
    border: 2px solid #007bff;
    font-size: 1.2rem;
    text-align: center;
    transition: border-color 0.3s;
  }

    .input-wrapper input:disabled {
      background-color: #e0e0e0;
      color: #7a7a7a;
      border-color: #bdbdbd;
      cursor: not-allowed;
      opacity: 0.8;
    }

    .input-wrapper input.correct {
      border: 2px solid #4caf50 !important;
      background-color: #e8f5e9;
    }

    .input-wrapper input.error {
      border: 2px solid #f44336 !important;
      background-color: #ffebee;
    }

.error-message {
  color: #ff4d4d;
  font-weight: bold;
  font-size: 1.1rem;
  margin-top: 0.5rem;
  text-align: center;
}

.action-buttons {
  width: 100%;
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
  padding: 0 1rem;
  align-items: center;
}

.left-buttons {
  display: flex;
  gap: 10px;
}

.right-button {
  margin-left: auto;
}

.action-buttons .btn {
  padding: 0.8rem 1.5rem;
  font-size: 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.info-btn {
  background-color: #f8c102;
  color: white;
  font-weight: bold;
}

  .info-btn:hover {
    background-color: #e6a500;
  }

.next-btn {
  background-color: #006780;
  color: white;
  font-weight: bold;
}

  .next-btn:hover {
    background-color: #004d5c;
  }

  .next-btn:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
  }

.generate-buttons {
  display: flex;
  gap: 10px;
}

.generate-btn {
  background-color: #006780;
  color: white;
  border: none;
  padding: 15px 32px;
  font-size: 1.2vw;
  border-radius: 0.5vw;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.3s;
  font-weight: bold;
}

  .generate-btn:disabled {
    background-color: #cccccc !important;
    color: #666666;
    cursor: not-allowed;
    opacity: 0.7;
    box-shadow: none;
    transition: none;
  }

.extra-btn {
  background-color: #ff9800;
  color: white;
  padding: 0.8rem 1.5rem;
  font-size: 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s;
  border: none;
}

  .extra-btn:hover {
    background-color: #e68900;
  }

@media (max-width: 768px) {
  .game-content {
    flex-direction: column;
    align-items: center;
  }

  .audio-card, .input-card {
    width: 90%;
    height: auto;
  }

  .submit-btn, .action-buttons {
    width: 90%;
  }

  .action-buttons {
    flex-direction: column;
    gap: 0.5rem;
  }
}

.popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 20;
}

.popup-content {
  background-color: #ffffff;
  padding: 2vw;
  border-radius: 8px;
  text-align: center;
  border: 10px solid var(--main-accent-color);
  max-width: 50vw;
}

  .popup-content p {
    font-size: 1.3vw;
    margin-bottom: 2vw;
    color: #004d5c;
    font-weight: bold;
  }

@keyframes fadeInCenter {
  0% {
    opacity: 0;
    transform: translateY(50px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.game-header {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding-bottom: 1rem;
}

.back-btn {
  left: 0;
  top: 40%;
  width: 6vw;
}

.game-title {
  font-size: 2vw;
  color: #004d5c;
  margin: 0;
  text-align: center;
}

.info-btn:disabled {
  background-color: #b0bec5;
  color: #757575;
  cursor: not-allowed;
  opacity: 0.6;
}

.audio-card--kids {
  --primary: #006780;
  --accent: #009688;
  --soft: #deefef;
  --bar: rgba(0, 103, 128, 0.28);
  --bar-strong: rgba(0, 103, 128, 0.65);
  background: var(--soft);
  padding: 2rem;
  border-radius: 14px;
  border: 3px solid var(--accent);
  position: relative;
}

.ac-header {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
}

.ac-generate {
  border-radius: 999px;
  font-weight: 700;
  min-width: 230px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-align: center;
  display: flex;
  justify-content: center;
}

.spinner {
  width: 16px;
  height: 16px;
  display: inline-block;
  border: 3px solid #fff;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.ac-player {
  display: grid;
  grid-template-rows: auto auto auto auto;
  gap: 1rem;
  place-items: center;
  padding: 1rem 0 0.5rem;
}

  .ac-player.is-disabled {
    opacity: 0.6;
    filter: grayscale(0.2);
  }

.play-btn {
  position: relative;
  width: 65px;
  height: 65px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(0,0,0,0.18);
  display: grid;
  place-items: center;
  transition: transform 0.12s ease, box-shadow 0.2s ease, background 0.3s ease;
  outline: none;
}

  .play-btn:disabled {
    cursor: not-allowed;
    opacity: 0.7;
  }

  .play-btn:hover:not(:disabled) {
    transform: translateY(-2px) scale(1.02);
  }

  .play-btn:active:not(:disabled) {
    transform: translateY(0) scale(0.98);
  }

  .play-btn .icon {
    width: 40px;
    height: 40px;
    fill: #fff;
  }

  .play-btn .pulse {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    opacity: 0.18;
    transform: scale(0.9);
  }

.ac-player.is-playing .play-btn .pulse {
  animation: pulse 1.6s ease-out infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.9);
    opacity: 0.22;
  }

  70% {
    transform: scale(1.25);
    opacity: 0;
  }

  100% {
    transform: scale(1.25);
    opacity: 0;
  }
}

.wave-shell {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 6px;
  height: 46px;
  width: 80%;
  max-width: 420px;
}

  .wave-shell .bar {
    width: 6px;
    height: 16px;
    background: var(--bar);
    border-radius: 4px;
    animation: wave 1s ease-in-out infinite;
    animation-play-state: paused;
  }

.ac-player.is-playing .wave-shell .bar {
  animation-play-state: running;
}

@keyframes wave {
  0%, 100% {
    height: 12px;
    background: var(--bar);
  }

  50% {
    height: 38px;
    background: var(--bar-strong);
  }
}

.timeline {
  position: relative;
  height: 10px;
  width: 80%;
  max-width: 520px;
  background: #e9f3f3;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.06);
}

  .timeline.is-disabled {
    opacity: 0.5;
  }

  .timeline .progress {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 999px 0 0 999px;
    transition: width 0.15s linear;
  }

.time {
  width: 80%;
  max-width: 520px;
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  color: #004d5c;
}

.ac-hint {
  font-size: 0.95rem;
  color: #004d5c;
  background: #ffffffa6;
  border: 1px dashed var(--accent);
  padding: 8px 12px;
  border-radius: 10px;
}

@media (max-width: 768px) {
  .play-btn {
    width: 84px;
    height: 84px;
  }

    .play-btn .icon {
      width: 34px;
      height: 34px;
    }

  .wave-shell {
    width: 92%;
  }

  .timeline, .time {
    width: 92%;
  }
}

.kid-panel {
  --primary: #006780;
  --accent: #009688;
  --soft: #deefef;
  background: var(--soft);
  border: 3px solid var(--accent);
  border-radius: 14px;
  padding: 1.2rem 1.4rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  position: relative;
}

.kp-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kp-title {
  margin: 0;
  font-size: 1.25rem;
  color: #004d5c;
  font-weight: 800;
}

.kp-attempts .heart {
  font-size: 1.15rem;
  margin-left: 6px;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

  .kp-attempts .heart.is-off {
    opacity: 0.25;
    transform: scale(0.88);
  }

.kp-input-wrap {
  position: relative;
  display: grid;
  place-items: center;
}

.kp-input {
  width: 100%;
  font-weight: 700;
  padding: 0.95rem 1rem;
  border-radius: 10px;
  border: 2px solid var(--primary);
  font-size: 1.15rem;
  text-align: center;
  background: #fff;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
  transition: transform 0.1s ease, box-shadow 0.2s ease, border-color 0.3s ease;
  caret-color: var(--primary);
}

  .kp-input:focus {
    outline: none;
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--accent);
  }

  .kp-input.correct {
    border-color: #4caf50 !important;
    background: #e8f5e9;
  }

  .kp-input.error {
    border-color: #f44336 !important;
    background: #ffebee;
  }

.ok-badge {
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%) scale(0.6);
  animation: okPop 0.6s ease forwards;
  pointer-events: none;
}

.ok-icon {
  width: 42px;
  height: 42px;
  display: block;
}

  .ok-icon circle {
    fill: rgba(0, 103, 128, 0.12);
    stroke: var(--primary);
    stroke-width: 2;
  }

  .ok-icon path {
    fill: none;
    stroke: #2e7d32;
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

@keyframes okPop {
  0% {
    transform: translateY(-50%) scale(0);
    opacity: 0;
  }

  60% {
    transform: translateY(-50%) scale(1.08);
    opacity: 1;
  }

  100% {
    transform: translateY(-50%) scale(1);
    opacity: 1;
  }
}

.kid-panel.is-shake .kp-input {
  animation: kpShake 0.35s ease;
}

@keyframes kpShake {
  0%, 100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-6px);
  }

  50% {
    transform: translateX(6px);
  }

  75% {
    transform: translateX(-4px);
  }
}

.kp-submit {
  width: 44%;
  margin: 0 auto;
  font-weight: 800;
  letter-spacing: 0.3px;
  font-size: 1.2vw;
}

.info-panel {
  background: #ffffffd9;
  border: 1px dashed var(--accent);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.info-line {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 0.6rem;
}

.info-chip {
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  white-space: nowrap;
}

.info-text {
  margin: 0;
  color: #004d5c;
  line-height: 1.35rem;
  font-size: 0.98rem;
}

@media (max-width: 768px) {
  .kp-title {
    font-size: 1.05rem;
  }

  .kp-input {
    width: 92%;
    font-size: 1.05rem;
  }

  .ok-badge {
    right: 4%;
  }

  .kp-submit {
    width: 92%;
  }
}

.action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

  .action-bar .left-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
  }

.py-btn {
  background-color: #006780;
  color: #ffffff;
  border: none;
  padding: 15px 32px;
  font-size: 1.2vw;
  border-radius: 0.5vw;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.3s;
  font-weight: bold;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  line-height: 1;
}

  .py-btn:hover:not(:disabled) {
    background-color: #18788f;
    transform: scale(1.05);
  }

  .py-btn:active:not(:disabled) {
    transform: scale(0.98);
  }

  .py-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
  }

  .py-btn:focus-visible {
    outline: 3px solid #94c7d6;
    outline-offset: 2px;
  }

  .py-btn .btn__icon {
    display: inline-block;
    transform: translateY(0);
    transition: transform 0.25s ease;
  }

  .py-btn:hover:not(:disabled) .btn__icon {
    transform: translateY(-2px);
  }

@media (max-width: 768px) {
  .py-btn {
    font-size: 16px;
    border-radius: 10px;
    padding: 12px 22px;
  }
}

.user-guide-close-icon {
  top: -5.4vw;
  right: -3.5vw;
}

.left-illustration {
  position: absolute;
  left: -2vw;
  top: 50%;
  transform: translateY(-50%);
  width: 19vw;
  height: auto;
  z-index: 1;
  pointer-events: none;
  filter: none !important;
  image-rendering: auto;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

@media (max-width: 768px) {
  .left-illustration {
    width: 170px;
    left: 8px;
  }
}