body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #0f172a, #111827);
  color: #f8fafc;
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: min(700px, 100%);
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.25);
}

h1,
h2 {
  margin-top: 0;
  color: #fde68a;
}

.notice {
  background: rgba(234, 179, 8, 0.15);
  border-left: 4px solid #facc15;
  padding: 10px 12px;
  border-radius: 8px;
}

.upload-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

input[type="text"],
input[type="password"],
input[type="file"] {
  padding: 10px;
  border: 1px solid #64748b;
  border-radius: 8px;
  background: #0f172a;
  color: #f8fafc;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
}

button {
  padding: 10px 12px;
  border: none;
  border-radius: 8px;
  background: #22c55e;
  color: white;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  background: #16a34a;
}

.song-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.song-list li {
  padding: 10px 12px;
  background: rgba(30, 41, 59, 0.9);
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.song-list a {
  color: #f8fafc;
  text-decoration: none;
}

.admin-link {
  margin-top: 18px;
}

.admin-song-item button {
  background: #ef4444;
}

.admin-song-item button:hover {
  background: #dc2626;
}