/* General Body & Background */
body {
  margin: 0;
  font-family: "Times New Roman", Times, serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  overflow-x: hidden;
  background: linear-gradient(135deg, #ffb3ba 50%, #ffe0b3 50%);
  background-size: 200% 100%;
  animation: rainbowDiagonal 10s linear infinite;
  color: #333;
}

/* Scroll progress bar */
#scrollBar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 6px;
  background-color: rgb(0, 238, 255);
  z-index: 9999;
}

/* Quiz container */
.quiz-container {
  background: #fff;
  padding: 5vw 7vw;
  border-radius: 15px;
  width: 90vw;
  max-width: 700px;
  margin: 5vw auto;
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
  text-align: center;
  position: relative;
}

/* Fixed floating & wiggling title */
h1 {
  position: fixed;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  background: rgba(255, 255, 255, 0.9);
  padding: 12px 24px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  font-weight: 700;
  font-size: 2em;
  color: #1b1b1b;
  animation: floatWiggle 6s ease-in-out infinite alternate;
}

/* Floating + horizontal wiggle animation */
@keyframes floatWiggle {
  0%   { transform: translateX(-50%) translateY(0px); }
  25%  { transform: translateX(-48%) translateY(5px); }
  50%  { transform: translateX(-50%) translateY(8px); }
  75%  { transform: translateX(-52%) translateY(5px); }
  100% { transform: translateX(-50%) translateY(0px); }
}

/* Fade-in animation */
@keyframes fadeInUp {
  0% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* Questions */
.question {
  margin-bottom: 4vw;
  font-size: 1.2em;
  text-align: left;
  padding-top: 70px; /* spacing for fixed title */
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s forwards;
}

/* Hide actual radio buttons */
.question input[type="radio"] {
  display: none;
}

/* Option labels */
.question .options label {
  display: block;
  padding: 12px 16px;
  margin-bottom: 10px;
  border: 2px solid #3399ff86;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  background-color: #fff;
  font-size: 1em;
  text-align: left;
  opacity: 0;
  transform: translateY(10px);
  animation: fadeInUp 0.5s forwards;
}

/* Staggered fade-in for each option */
.question .options label:nth-child(1) { animation-delay: 0.2s; }
.question .options label:nth-child(2) { animation-delay: 0.4s; }
.question .options label:nth-child(3) { animation-delay: 0.6s; }

/* Hover effect for options */
.question .options label:hover {
  background-color: #e6f0ff;
}

/* Selected option highlighting */
.question input[type="radio"]:checked + span {
  background-color: #3399ff95;
  color: white;
  border-color: #3399ff79;
  display: block;
  padding: 12px 16px;
  border-radius: 8px;
}

/* Correct / Wrong answers (optional) */
.correct { color: green; font-weight: bold; }
.wrong { color: red; font-weight: bold; }

/* Submit button */
button {
  background: #83eb86;
  color: white;
  padding: 16px 0;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  width: 100%;
  font-size: 1.2em;
  margin-top: 2vw;
  transition: 0.3s;
}
button:hover { background: #45a049; }

/* Submission message */
.submit-msg {
  color: rgb(97, 248, 102);
  font-size: 1.3em;
  margin-top: 1vw;
  text-align: center;
}

/* Rainbow diagonal background */
@keyframes rainbowDiagonal {
  0%   { background: linear-gradient(135deg, #ffb3ba 50%, #ffe0b3 50%); }
  10%  { background: linear-gradient(135deg, #ffe0b3 50%, #f3e5ab 50%); } /* Vanilla */
  20%  { background: linear-gradient(135deg, #f3e5ab 50%, #e0ffe0 50%); } /* Light Mint */
  35%  { background: linear-gradient(135deg, #e0ffe0 50%, #d0f4ff 50%); } /* Light Blue */
  50%  { background: linear-gradient(135deg, #d0f4ff 50%, #e0e0ff 50%); } /* Light Lavender */
  65%  { background: linear-gradient(135deg, #e0e0ff 50%, #ffe0f7 50%); } /* Light Pink */
  80%  { background: linear-gradient(135deg, #ffe0f7 50%, #fffbe0 50%); } /* Light Yellow */
  90%  { background: linear-gradient(135deg, #fffbe0 50%, #ffb3ba 50%); }
  100% { background: linear-gradient(135deg, #ffb3ba 50%, #ffe0b3 50%); }
}

/* Responsive for mobile */
@media (max-width: 600px) {
  .quiz-container { padding: 8vw 4vw; width: 98vw; max-width: 100vw; }
  h1 { font-size: 1.8em; padding: 10px 18px; }
  .question { font-size: 1.1em; margin-bottom: 5vw; padding-top: 80px; }
  button { font-size: 1em; padding: 14px 0; }
}