:root {
  --primary: #00f2fe;
  --secondary: #4facfe;
  --accent: #8e2de2;
  --dark-bg: #0a0a0c;
}

body {
  background-color: var(--dark-bg);
  color: #ffffff;
  font-family: "Inter", sans-serif;
  overflow-x: hidden;
}

.gradient-text {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.glass-card {
  background: rgba(22, 22, 26, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.quiz-step {
  display: none;
  min-height: 400px;
}

.quiz-step.active {
  display: flex;
  flex-direction: column;
  justify-content: center;
  animation: slideIn 0.4s ease-out forwards;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.btn-option {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
  text-align: left;
  padding: 1.25rem;
  border-radius: 1rem;
  width: 100%;
  margin-bottom: 1rem;
}

.btn-option:hover {
  border-color: var(--primary);
  background: rgba(0, 242, 254, 0.05);
  transform: scale(1.02);
}

.progress-bar {
  height: 6px;
  background: #222;
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  width: 20%;
  transition: width 0.5s ease;
}

.input-custom {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: white;
  padding: 1rem;
  border-radius: 0.75rem;
  width: 100%;
  outline: none;
}

.input-custom:focus {
  border-color: var(--primary);
}