* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: linear-gradient(135deg, #1f1c2c, #928dab);
  margin: 0;
  font-family: Arial, sans-serif;
  perspective: 1000px;
  flex-direction: column;
  gap: 40px;
}

.navbar {
  position: fixed;
  top: 30px;
  display: flex;
  gap: 20px;
  background: rgba(255, 255, 255, 0.1);
  padding: 15px 30px;
  border-radius: 50px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  z-index: 1000;
}

.navbar a {
  color: #fff;
  text-decoration: none;
  font-size: 16px;
  font-weight: bold;
  padding: 10px 20px;
  border-radius: 25px;
  transition: all 0.3s ease;
}

.navbar a:hover {
  background: rgba(255, 255, 255, 0.2);
}

.navbar a.active {
  background: rgba(255, 255, 255, 0.3);
}

.card {
  width: 300px;
  height: 400px;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  transition: transform 0.1s ease;
  transform-style: preserve-3d;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  font-size: 24px;
  font-weight: bold;
  color: #333;
  position: relative;
  padding: 30px;
  text-align: center;
  gap: 20px;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 20px;
  background: rgba(255,255,255,0.1);
  pointer-events: none;
}

.card h2 {
  font-size: 32px;
  position: relative;
  z-index: 1;
}

.card p {
  font-size: 16px;
  font-weight: normal;
  color: #666;
  position: relative;
  z-index: 1;
  line-height: 1.6;
}

.card-gradient1 {
  background: linear-gradient(135deg, #f093fb, #f5576c);
  color: #fff;
}

.card-gradient1 p {
  color: rgba(255, 255, 255, 0.9);
}

.card-gradient2 {
  background: linear-gradient(135deg, #4facfe, #00f2fe);
  color: #fff;
}

.card-gradient2 p {
  color: rgba(255, 255, 255, 0.9);
}

.video-card {
  width: 90%;
  max-width: 600px;
  margin: 40px auto;
  background: white;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  text-align: center;
  padding: 20px;
}

.card-video {
  width: 100%;
  height: auto;
  max-height: 340px;
  border-radius: 15px;
  object-fit: cover;
  margin-bottom: 15px;
}

audio#bg-audio {
  margin: 20px auto;
  display: block;
  width: 80%;
  max-width: 400px;
}