/* =========================================
   Quoridor - 大厅 (Lobby) 独立样式
   ========================================= */

   #lobby {
    width: 100%;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  #lobby h1 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 2px;
    margin: 8px 0 16px;
  }
  
  /* --- 面板与容器 --- */
  .panel {
    width: 100%;
    padding: 14px;
    margin-bottom: 10px;
    background: var(--panel);
    border-radius: 14px;
  }
  
  .panel-title {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-muted);
  }
  
  .flex-row {
    display: flex;
    gap: 8px;
    width: 100%;
  }
  
  /* --- 输入框与大厅按钮 --- */
  input {
    flex: 1;
    border: 0;
    outline: 0;
    padding: 11px 14px;
    font-size: 14px;
    border-radius: 12px;
    background: var(--btn-bg);
    color: var(--text);
    font-family: monospace;
    text-transform: lowercase;
  }
  
  input::placeholder {
    color: var(--text-muted);
  }
  
  #lobby button {
    border: 0;
    outline: 0;
    padding: 11px 14px;
    font-size: 14px;
    border-radius: 12px;
    background: var(--btn-bg);
    color: var(--text);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
  }
  
  #lobby button:active {
    background: var(--btn-active);
    color: var(--btn-active-text);
  }
  
  /* --- 房间码/匹配码展示区 --- */
  .code-box {
    margin-top: 10px;
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 6px;
  }
  
  .code-text {
    width: 100%;
    padding: 12px;
    font: bold 22px monospace;
    letter-spacing: 5px;
    text-align: center;
    cursor: pointer;
    background: var(--btn-bg);
    border-radius: 12px;
  }
  
  .tip-text {
    font-size: 12px;
    color: var(--text-muted);
  }
  
  /* --- 大厅底部教程按钮 --- */
  #btn-tutorial,
  .tutorial-entry-btn,
  .tutorial-btn {
    width: 100% !important;
    align-self: stretch;
    box-sizing: border-box;
    margin-top: 6px;
    background: var(--btn-bg);
    color: var(--text);
    border: 0;
    outline: 0;
    font-size: 14px;
    font-weight: 600;
    padding: 14px;
    border-radius: 14px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
  }
  
  #btn-tutorial:active,
  .tutorial-entry-btn:active,
  .tutorial-btn:active {
    background: var(--btn-active);
    color: var(--btn-active-text);
  }