/* styles.css */

:root {
  --font-family: "Nunito", sans-serif;
  --primary-color: #4a90e2;
  --correct-color: #34d399;
  --incorrect-color: #f87171;
  --card-bg: #ffffff;
  --text-color: #333;
  --container-bg: rgba(255, 255, 255, 0.9);
  --sequence-bg: rgba(227, 237, 247, 0.8);
  --border-color: #a8c5e5;
}

html {
  scroll-behavior: smooth;
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  touch-action: manipulation;
}

#app-container {
  width: 100%;
  height: 100%;
  background-color: #fde68a;
  background-image: linear-gradient(
    to top,
    #fde68a 0%,
    #fce38a 50%,
    #f38181 100%
  );
  padding: 4vmin;
  box-sizing: border-box;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  overflow-y: auto;
}

.screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 40px;
  background-color: var(--container-bg);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
  padding: 4vmin;
  width: 90%;
  max-width: 800px;
  margin: 0 auto;
  box-sizing: border-box;
}

.hidden {
  display: none;
}

.title {
  font-size: 8vmin;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 3vmin;
}

.header {
  font-size: 5.5vmin;
  font-weight: 700;
  color: var(--text-color);
  margin: 1.5vmin 0;
}

p {
  font-size: 3vmin;
}

.button {
  background-color: var(--primary-color);
  color: white;
  font-size: 4vmin;
  font-weight: 700;
  padding: 2vmin 4vmin;
  border: none;
  border-radius: 2.5vmin;
  cursor: pointer;
  transition: transform 0.2s ease-in-out;
  box-shadow: 0 0.5vmin 1.5vmin rgba(0, 0, 0, 0.2);
}

.button:hover {
  transform: scale(1.05);
}

#sequence-container {
  background-color: var(--sequence-bg);
  border: 0.3vmin solid var(--border-color);
  border-radius: 3vmin;
  padding: 2vmin;
  margin-bottom: 3vmin;
  transition: width 0.5s ease-in-out;
}

#sequence-display,
#answer-options {
  display: flex;
  flex-wrap: wrap;
  gap: 3vmin;
  justify-content: center;
  align-items: center;
  transition: width 0.5s ease-in-out;
}

.card {
  background-color: var(--card-bg);
  border-radius: 2.5vmin;
  box-shadow: 0 0.8vmin 2vmin rgba(0, 0, 0, 0.1);
  padding: 2vmin;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  will-change: transform, box-shadow, opacity;
}

.card img {
  width: 20vmin;
  height: 20vmin;
  object-fit: cover;
  border-radius: 2vmin;
  pointer-events: none;
}

.card p {
  margin-top: 1.5vmin;
  font-size: 3vmin;
  font-weight: 700;
  color: #555;
}

.option-card {
  cursor: pointer;
}

.option-card:hover {
  transform: translateY(-1vmin);
  box-shadow: 0 1.2vmin 2.5vmin rgba(0, 0, 0, 0.2);
}

.card.correct {
  box-shadow: 0 0 0 1.2vmin var(--correct-color);
}

.option-card.correct {
  animation: correct-answer-pulse 0.5s ease-in-out;
}

.option-card.incorrect {
  box-shadow: 0 0 0 1.2vmin var(--incorrect-color);
  animation: incorrect-answer-shake 0.5s ease-in-out;
}

.option-card.fading-out {
  animation: fade-out 0.5s ease-in-out forwards;
}

.card.moving {
  position: absolute;
  z-index: 10;
  transition: top 0.5s ease-in-out, left 0.5s ease-in-out,
    transform 0.5s ease-in-out;
}

#feedback-message {
  margin-top: 4vmin;
  font-size: 6.5vmin;
  font-weight: 800;
  height: 8vmin; /* Reserve space */
}

#next-button {
  margin-top: 3vmin;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.03);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes correct-answer-pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes incorrect-answer-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-1.5vmin);
  }
  75% {
    transform: translateX(1.5vmin);
  }
}

@keyframes fade-out {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.8);
  }
}