/* General Styles for Mobile */
@media (max-width: 768px) {
  body {
    font-size: 14px; /* Smaller font size for mobile */
  }

  .page {
    width: 90%; /* Make the quiz container narrower */
    padding: 15px; /* Reduce padding */
  }

  h1 {
    font-size: 24px; /* Smaller heading size */
  }

  h2 {
    font-size: 20px; /* Smaller question size */
  }

  input, button {
    width: 100%; /* Full-width inputs and buttons */
    font-size: 14px; /* Smaller font size */
    padding: 8px; /* Smaller padding */
  }

  #options .option {
    width: 100%; /* Full-width options */
    font-size: 14px; /* Smaller font size */
    padding: 8px; /* Smaller padding */
  }

  #timer-container {
    flex-direction: column; /* Stack timer and circle vertically */
    gap: 5px; /* Reduce gap between elements */
  }

  #timer {
    font-size: 20px; /* Smaller timer text */
  }

  #timer-circle {
    width: 50px; /* Smaller circle */
    height: 50px;
  }

  #timer-circle-background,
  #timer-circle-progress {
    stroke-width: 4; /* Thinner stroke */
  }

  #progress-bar-container {
    height: 8px; /* Thinner progress bar */
  }

  #progress-bar {
    height: 8px; /* Thinner progress bar */
  }

  #share-buttons {
    flex-direction: column; /* Stack share buttons vertically */
    gap: 5px; /* Reduce gap between buttons */
  }

  #share-buttons button {
    width: 100%; /* Full-width share buttons */
    font-size: 14px; /* Smaller font size */
    padding: 8px; /* Smaller padding */
  }

  #restart-btn {
    width: 100%; /* Full-width restart button */
    font-size: 14px; /* Smaller font size */
    padding: 8px; /* Smaller padding */
  }
}

/* Share Buttons */
#share-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin: 20px 0;
}

#share-buttons button {
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.2s ease;
}

#share-telegram {
  background: #0088cc;
  color: white;
}

#share-vk {
  background: #4a76a8;
  color: white;
}

#share-sms {
  background: #4caf50;
  color: white;
}

#share-buttons button:hover {
  transform: scale(1.05);
}

/* Timer Styles */
/* Timer Container */
#timer-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
}

/* Timer Text */
#timer {
  font-size: 24px;
  font-weight: bold;
  color: #ff6f61;
  animation: pulse 1s infinite alternate;
}

/* Timer Circle (SVG) */
#timer-circle {
  transform: rotate(-90deg); /* Start from the top */
}

#timer-circle-background {
  fill: none;
  stroke: rgba(255, 255, 255, 0.2);
  stroke-width: 5;
}

#timer-circle-progress {
  fill: none;
  stroke: #ff6f61;
  stroke-width: 5;
  stroke-dasharray: 157; /* Circumference of the circle (2 * π * r) */
  stroke-dashoffset: 157; /* Start with no progress */
  transition: stroke-dashoffset 1s linear;
}

@keyframes pulse {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.1);
  }
}

/* General Styles */
body {
  font-family: Arial, sans-serif;
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  overflow: hidden;
  background: linear-gradient(135deg, #ff9a9e, #fad0c4, #a1c4fd, #c2e9fb, #fbc2eb, #a6c1ee, #4b6cb7, #182848);
  background-size: 400% 400%;
  animation: gradientMove 15s ease infinite;
  transition: background 0.5s ease, color 0.5s ease;
}

body.dark-theme {
  background: linear-gradient(135deg, #1e3c72, #2a5298, #1c1c1c, #3a3a3a);
  background-size: 400% 400%;
  animation: gradientMove 15s ease infinite;
}

@keyframes gradientMove {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.page {
  text-align: center;
  padding: 20px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out, background 0.5s ease;
  opacity: 0;
  transform: translateY(20px);
}

body.dark-theme .page {
  background: rgba(0, 0, 0, 0.5);
}

.page.active {
  opacity: 1;
  transform: translateY(0);
}

.hidden {
  display: none;
}

input, button {
  padding: 10px;
  margin: 10px;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  transition: all 0.3s ease;
}

input {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

input:focus {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

button {
  background: #ff6f61;
  color: white;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.2s ease;
}

button:hover {
  background: #ff3b2f;
  transform: scale(1.05);
}

#options {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.option {
  padding: 10px;
  margin: 5px;
  width: 80%;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.2s ease;
}

body.dark-theme .option {
  background: rgba(255, 255, 255, 0.1);
}

.option:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

.option.correct {
  background: #4caf50;
  animation: correct 0.5s ease forwards;
}

body.dark-theme .option.correct {
  background: #4caf50; /* Keep the same color for visibility */
}

.option.wrong {
  background: #f44336;
  animation: wrong 0.5s ease forwards;
}

body.dark-theme .option.wrong {
  background: #f44336; /* Keep the same color for visibility */
}

@keyframes correct {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

@keyframes wrong {
  0% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  50% { transform: translateX(10px); }
  100% { transform: translateX(0); }
}

/* Theme Switcher Button */
.theme-switcher {
  position: fixed;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.2s ease;
}

.theme-switcher:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

/* Progress Bar */
#progress-bar-container {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  margin-bottom: 20px;
  overflow: hidden;
}

#progress-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #ff6f61, #ff3b2f, #ff6f61); /* Gradient for the progress bar */
  border-radius: 5px;
  transition: width 0.5s ease;
  background-size: 200% 100%; /* For animation */
  animation: progressGradient 2s linear infinite; /* Animation for gradient */
}

/* Gradient Animation */
@keyframes progressGradient {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: -100% 0;
  }
}
/* Additional Animations */
@keyframes fadeOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-20px);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#quiz-page.fade-out {
  animation: fadeOut 0.5s ease forwards;
}

#quiz-page.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

#start-page.active, #quiz-page.active, #end-page.active {
  animation: fadeIn 0.5s ease forwards;
}

#options .option {
  animation: slideIn 0.5s ease forwards;
  animation-delay: calc(var(--index) * 0.1s);
}

@keyframes correctAnswer {
  0% {
    transform: scale(1);
    background: #4caf50;
  }
  50% {
    transform: scale(1.1);
    background: #66bb6a;
  }
  100% {
    transform: scale(1);
    background: #4caf50;
  }
}

@keyframes wrongAnswer {
  0% {
    transform: translateX(0);
    background: #f44336;
  }
  25% {
    transform: translateX(-10px);
    background: #ef5350;
  }
  50% {
    transform: translateX(10px);
    background: #f44336;
  }
  75% {
    transform: translateX(-5px);
    background: #ef5350;
  }
  100% {
    transform: translateX(0);
    background: #f44336;
  }
}

.option.correct {
  animation: correctAnswer 0.5s ease forwards;
}

.option.wrong {
  animation: wrongAnswer 0.5s ease forwards;
}

#quiz-page {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
}