body {
    font-family: 'Inter', sans-serif;
    background-color: #0A0F1F; /* Main dark background */
    color: #E0E0E0; /* Light text color for contrast */
    position: relative;
    z-index: 0;
}
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: url('Anu-Background.png') center center / cover no-repeat;
    opacity: 0.55;
    z-index: -1;
    pointer-events: none;
}
.hero-section {
    background-color: rgba(10, 15, 31, 0.7); /* Semi-transparent dark */
}
.section-bg {
    background: linear-gradient(90deg, rgba(10, 15, 31, 0.7) 0%, rgba(26, 32, 53, 0.7) 100%);
}
.card-bg {
    background-color: #1A2035; /* Darker card background */
}
.primary-button {
    background-color: #007BFF; /* Bright blue for buttons */
    color: white;
    transition: background-color 0.3s ease;
}
.primary-button:hover {
    background-color: #0056b3;
}
.secondary-button {
    border: 1px solid #007BFF;
    color: #007BFF;
    transition: background-color 0.3s ease, color 0.3s ease;
}
.secondary-button:hover {
    background-color: #007BFF;
    color: white;
}
.nav-link {
    color: #A0AEC0; /* Lighter gray for nav links */
    transition: color 0.3s ease;
}
.nav-link:hover {
    color: #E0E0E0; /* White on hover */
}
.icon-placeholder { /* For SVG icons */
    width: 24px;
    height: 24px;
    fill: currentColor; /* SVG will inherit text color */
}
.quiz-box {
    background: rgba(20, 30, 55, 0.7); /* translucent dark */
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 1rem;
    border: 1px solid rgba(255,255,255,0.12);
}
.answer-options {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 1rem;
}
.answer-box {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border: 2px solid transparent;
  border-radius: 1.5rem;
  padding: 1rem 1.5rem;
  font-size: 1rem;
  cursor: pointer;
  transition: border 0.2s, background 0.2s, color 0.2s;
  min-width: 140px;
  text-align: center;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
}
.answer-box.selected,
.answer-box:focus {
  border: 2px solid #007BFF;
  background: rgba(33,118,255,0.15);
  color: #007BFF;
  outline: none;
}
.answer-box:hover {
  border: 2px solid #007BFF;
}
.quiz-step label {
  font-weight: bold;
  text-align: center;
  display: block;
  width: 100%;
}