body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(255, 92, 200, 0.18), transparent 35%),
    radial-gradient(circle at bottom, rgba(57, 255, 106, 0.12), transparent 35%),
    #070707;
  color: white;
  font-family: 'Orbitron', sans-serif;
  text-align: center;
}

.page {
  max-width: 1150px;
  margin: auto;
  padding: 38px 20px 70px;
}

h1 {
  font-family: 'Pacifico', cursive;
  font-size: 4.6rem;
  color: #39ff6a;
  margin: 10px 0 4px;
  text-shadow: 0 0 28px rgba(57, 255, 106, 0.75);
}

.subtitle {
  color: #ff5cc8;
  letter-spacing: 3px;
  font-size: 0.95rem;
  margin: 0 0 14px;
}

.intro {
  color: #ffffff;
  opacity: 0.85;
  max-width: 720px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.player-box {
  margin: 0 auto 35px;
}

video {
  width: 100%;
  max-width: 950px;
  background: #000;
  border-radius: 22px;
  box-shadow:
    0 0 28px rgba(255, 92, 200, 0.35),
    0 0 45px rgba(57, 255, 106, 0.16);
}

#nowPlaying {
  color: #f2c7e8;
  margin-top: 14px;
  font-size: 0.9rem;
}

.category {
  margin: 30px auto;
  padding: 24px 18px;
  max-width: 900px;
  border: 1px solid rgba(255, 92, 200, 0.35);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.045);
  box-shadow: 0 0 22px rgba(255, 92, 200, 0.12);
}

.category h2 {
  font-size: 1.55rem;
  margin: 0 0 8px;
  color: #ffffff;
}

.category-note {
  color: #d8d8d8;
  font-size: 0.85rem;
  line-height: 1.5;
  margin: 0 0 18px;
}

.challenge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

button {
  font-family: 'Orbitron', sans-serif;
  background: #ff5cc8;
  color: white;
  border: none;
  padding: 14px 22px;
  border-radius: 999px;
  font-size: 0.82rem;
  letter-spacing: 1px;
  cursor: pointer;
  min-width: 310px;
  box-shadow: 0 0 18px rgba(255, 92, 200, 0.42);
}

button:hover {
  background: #ff2fb3;
  transform: scale(1.03);
}

button:disabled {
  background: #333;
  color: #aaa;
  cursor: not-allowed;
  box-shadow: none;
}

.locked {
  opacity: 0.72;
}

@media (max-width: 600px) {
  h1 {
    font-size: 3.1rem;
  }

  button {
    width: 100%;
    min-width: unset;
  }
}