html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow-x: hidden;
}
#tsparticles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}
body {
  background: radial-gradient(circle at top left, #10151c, #0f0f0f);
  color: #ffffffcc;
  font-family: 'Segoe UI', sans-serif;
  padding: 1rem;
}
.container-custom {
  max-width: 1000px;
  margin: auto;
  background: rgba(20, 20, 20, 0.75);
  border-radius: 1rem;
  padding: 2rem;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.glow-title {
  font-weight: bold;
  font-size: 2rem;
  color: #0af;
  text-align: center;
  text-shadow: 0 0 10px #0af;
}
#ip-city-group {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  align-items: center;
}
#server-ip {
  flex: 1 1 300px;
}
button.btn-info {
  background: linear-gradient(to right, #00c6ff, #0072ff);
  border: none;
  font-weight: 600;
  box-shadow: 0 0 10px #0072ff;
}
button.btn-info:hover {
  opacity: 0.85;
  box-shadow: 0 0 15px #00c6ff;
}
#city-display {
  background-color: #1e1e1e;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  min-width: 180px;
  text-align: center;
  font-weight: 600;
  color: #03dac5;
  border: 1px solid #03dac5;
  box-shadow: 0 0 5px #03dac5;
}
.player-section {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
#player-list {
  flex: 1 1 45%;
  max-height: 500px;
  overflow-y: auto;
  border-radius: 0.5rem;
  background-color: #1b1b1b;
  border: 1px solid #444;
  padding: 0.5rem;
}
.player-item {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid #333;
  cursor: pointer;
  transition: background 0.3s ease;
}
.player-item:hover {
  background-color: #0af3;
}
.player-item.selected {
  background-color: #0af8;
  color: #000;
  font-weight: bold;
}
#player-avatar {
  max-width: 100px;
  border-radius: 8px;
  border: 2px solid #0af;
  box-shadow: 0 0 15px #0af4;
}
.detail-label {
  font-weight: 600;
  color: #0af;
}
.player-detail-block {
  flex: 1 1 45%;
  background: #121212;
  border-radius: 0.5rem;
  padding: 1rem;
  box-shadow: 0 0 10px #0af2;
}
.popup-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background-color: #0af;
  color: #fff;
  border-radius: 10px;
  padding: 1rem;
  display: none;
  z-index: 1000;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
  animation: slideIn 0.5s ease;
}
@keyframes slideIn {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}
#search-player {
  margin-bottom: 0.75rem;
  border-radius: 6px;
  border: none;
  padding: 0.5rem 1rem;
  width: 100%;
  background-color: #222;
  color: #fff;
}
#player-count {
  font-weight: bold;
  margin-bottom: 0.75rem;
  color: #0af;
}
@media (max-width: 768px) {
  .container-custom {
    padding: 1rem;
  }
  .glow-title {
    font-size: 1.5rem;
  }
  .player-section {
    flex-direction: column;
  }
}