/* ===== 统一游戏外壳 · 音游风格 (game-shell) ===== */
/* 深空渐变背景 + 霓虹 + 玻璃卡片, 与节奏打击保持一致 */

/* 统一背景 */
html, body {
  background: linear-gradient(180deg, #1a0a3a 0%, #0a0a1a 60%, #001a2a 100%) !important;
  background-attachment: fixed !important;
  font-family: -apple-system, 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', sans-serif !important;
  color: #fff;
}

/* 顶部统一导航栏 */
#gs-shell-nav {
  position: relative;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  margin-bottom: 12px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 4px 20px rgba(0,0,0,.3);
}
#gs-shell-nav .gs-home {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #fff;
  text-decoration: none;
  background: linear-gradient(90deg, #2196f3, #ffb300);
  box-shadow: 0 2px 12px rgba(33,150,243,.35);
  transition: transform .15s, filter .2s;
  flex-shrink: 0;
  margin-left: auto; /* home 贴右上角 */
}
#gs-shell-nav .gs-home:hover { transform: translateY(-1px); filter: brightness(1.1); }
#gs-shell-nav .gs-home:active { transform: scale(.95); }
#gs-shell-nav .gs-title {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(90deg, #7ef2ff, #ffd700, #ff9ad5);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#gs-shell-nav .gs-tag {
  margin-left: auto;
  font-size: 10px;
  color: rgba(255,255,255,.5);
  letter-spacing: 1px;
  flex-shrink: 0;
}
@media (max-width: 480px) {
  #gs-shell-nav { padding: 8px 10px; }
  #gs-shell-nav .gs-home { padding: 6px 12px; font-size: 12px; }
  #gs-shell-nav .gs-title { font-size: 13px; }
  #gs-shell-nav .gs-tag { display: none; }
}