:root {
  --bg-color: #f4f6f8;
  --card-bg: #ffffff;
  --primary-color: #003366; --accent-color: #2c7be5;
  --success-color: #28a745; --danger-color: #dc3545;
  --locked-color: #adb5bd; --text-color: #2c3e50;
  --border-radius: 8px;
  --shadow: 0 4px 12px rgba(0,0,0,0.15);
}

html, body {
  max-width: 100vw;
  overflow-x: hidden; /* 隱藏水平捲軸，侷限在螢幕寬度內 */
  touch-action: pan-y; /* 停用雙指縮放，僅允許垂直上下滑動 */
}

body { font-family: 'Noto Sans TC', sans-serif; background-color: var(--bg-color);
  color: var(--text-color); margin: 0; padding: 10px; display: flex; justify-content: center; align-items: center; min-height: 100vh;
}
.container { width: 100%; max-width: 600px; background-color: var(--card-bg); border-radius: var(--border-radius); box-shadow: var(--shadow);
  border-top: 6px solid var(--primary-color); padding: 30px; position: relative; text-align: left;
}

.header-bar { border-bottom: 2px solid #f0f0f0; padding-bottom: 15px;
  margin-bottom: 20px; display: flex; justify-content: space-between; align-items: center; }
.header-title { font-size: 1.2rem; font-weight: 700;
  color: var(--primary-color); }
.user-detail { font-size: 0.85rem; color: #666; margin-top: 2px;
}
.status-badge { background: #e9ecef; padding: 4px 10px; border-radius: 20px; font-size: 0.85rem; color: #495057;
  display: inline-block; }

.content-area { line-height: 1.8; font-size: 1rem;
  margin-bottom: 20px; color: #4a4a4a; }
.media-container { width: 100%; background: #000; margin-bottom: 20px; display: flex;
  align-items: center; justify-content: center; border-radius: 6px; overflow: hidden; }
.media-container img { width: 100%;
  height: auto; display: block; }
.media-container iframe { width: 100%; aspect-ratio: 16/9; border: none;
}

/* 成績單 */
.result-card { background: #f0f7ff;
  border: 2px solid #cce5ff; border-radius: 10px; padding: 20px; text-align: center; margin-bottom: 20px;
}
.result-school { font-size: 1.1rem; color: #004085; font-weight: bold; margin-bottom: 5px;
}
.result-name { font-size: 1rem; color: #555; margin-bottom: 15px;
}
.result-stats { display: flex; justify-content: space-around; margin-top: 10px; align-items: flex-start;
}
.stat-item { display: flex; flex-direction: column; width: 45%;
}
.stat-label { font-size: 0.85rem; color: #666;
}
.stat-value { font-size: 2rem; font-weight: bold; color: var(--accent-color);
}
.stat-value.score { color: #d63384;
}

.rank-badge { background: #ffc107; color: #856404;
  padding: 5px 15px; border-radius: 20px; font-weight: bold; font-size: 1rem; margin-top: 15px; display: inline-block; box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* 排行榜 */
.leaderboard-box { background: #fff8e1;
  border: 2px solid #ffecb3; padding: 15px; border-radius: 8px; margin-top: 20px; }
.leaderboard-title { text-align: center;
  font-weight: bold; color: #f57f17; margin-bottom: 10px; font-size: 1.1rem; }
.rank-table { width: 100%; border-collapse: collapse;
  font-size: 0.9rem; }
.rank-table th { text-align: left; border-bottom: 2px solid #ffe082; padding: 5px;
  color: #f57f17; }
.rank-table td { border-bottom: 1px solid #fff3cd; padding: 8px 5px;
}
.rank-1 { font-weight: bold; color: #d84315;
}

/* 任務列表 */
.task-group { margin-bottom: 15px;
  border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden; }
.task-header { background: #f8f9fa; padding: 15px;
  cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: bold; color: var(--primary-color);
}
.task-list { display: none; background: white; padding: 0; margin: 0; list-style: none;
}
.task-group.open .task-list { display: block; border-top: 1px solid #e0e0e0;
}
.level-item { padding: 12px 20px; border-bottom: 1px solid #f0f0f0; display: flex; align-items: center;
  justify-content: space-between; cursor: pointer; }
.level-item.completed { color: var(--success-color); background: #fafffb;
}
.level-item.active { background: #fff; color: var(--accent-color); font-weight: bold; border-left: 4px solid var(--accent-color);
}
.level-item.locked { color: var(--locked-color); background: #f9f9f9; pointer-events: none;
}

.info-text { font-size: 0.8rem; color: #666; margin-left: 5px;
}
.penalty-time { color: #e67e22; font-weight: bold;
}
.deduct-score { color: #dc3545; font-weight: bold;
}

/* 回顧模式 */
.review-stats-board { background: #f8f9fa;
  border-left: 5px solid #28a745; padding: 15px; margin-bottom: 20px; border-radius: 4px; box-shadow: 0 2px 5px rgba(0,0,0,0.05); display: flex; flex-direction: column;
  gap: 5px; }
.review-stat-row { display: flex; justify-content: space-between; align-items: center;
}
.review-stat-value { font-weight: bold; color: #333; font-size: 1.1rem; margin-left: 5px;
}
.btn-review-disabled { cursor: default; opacity: 0.7; background-color: #f1f3f5; border: 1px solid #dee2e6; pointer-events: none;
}
.btn-review-correct { border: 2px solid #28a745 !important; background-color: #e6ffec !important; color: #155724 !important;
  font-weight: bold; position: relative; opacity: 1 !important; }
.btn-review-correct::after { 
  content: ' (★ 正確解答)'; 
  position: static; /* 取消絕對定位 */
  display: block;   /* 讓文字直接換行顯示在選項下方 */
  font-size: 1rem; 
  color: #28a745; 
  margin-top: 5px; 
}

.btn { display: block; width: 100%; padding: 15px;
  margin: 10px 0; background: var(--card-bg); border: 2px solid #e9ecef; color: var(--accent-color); border-radius: 6px; cursor: pointer; text-align: center; font-weight: bold;
  transition: all 0.2s; }
.btn-primary { background: var(--primary-color); color: white; border: none;
}
.btn-final { background: linear-gradient(135deg, #f6d365 0%, #fda085 100%); color: #fff; border: none; font-size: 1.1rem;
  box-shadow: 0 4px 15px rgba(253, 160, 133, 0.4); }
.btn-hint { background-color: #ffc107; color: #856404;
  border: 1px solid #ffeeba; font-weight: bold; font-size: 0.9rem; padding: 8px 15px; border-radius: 20px; cursor: pointer; display: inline-flex; align-items: center;
  margin-left: 10px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.btn-hint:hover { background-color: #ffca2c;
}
.btn-intro { background: #17a2b8; color: white; border: none; animation: pulse 2s infinite;
}

/* 掃描按鈕樣式 */
.btn-scan { background: #17a2b8;
  color: white; border: none; font-size: 1.1rem; display: flex; align-items: center; justify-content: center; gap: 10px;
}
.btn-scan:hover { background: #138496;
}

/* ★ 錦囊庫按鈕與清單樣式 */
.btn-side-quest { margin-left: auto; margin-bottom: 15px; width: fit-content; background: #6f42c1; color: white; border: none; padding: 8px 15px; border-radius: 20px; font-size: 0.9rem; font-weight: bold; cursor: pointer; box-shadow: 0 2px 5px rgba(0,0,0,0.2); display: flex; align-items: center; gap: 5px; }
.btn-side-quest:hover { background: #5a32a3; }
.sq-list-btn { width: 100%; padding: 12px; margin-bottom: 10px; background: #f8f9fa; border: 2px solid #6f42c1; color: #6f42c1; border-radius: 6px; font-weight: bold; cursor: pointer; text-align: left; }
.sq-list-btn.completed { background: #e9ecef; border-color: #adb5bd; color: #6c757d; }

/* 掃描視窗樣式 */
#scanner-container { width: 100%;
  max-width: 400px; margin: 0 auto; background: #000; position: relative; }
#reader { width: 100%;
}

.hidden { display: none !important;
}
.loader { border: 4px solid #f3f3f3; border-top: 4px solid var(--primary-color); border-radius: 50%; width: 30px;
  height: 30px; animation: spin 1s linear infinite; margin: 20px auto;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg);
} }

/* 防止手機輸入自動縮放 (字體設為 16px) */
input[type="text"], 
input[type="password"], 
input[type="number"],
select, 
textarea { 
  width: 100%;
  padding: 12px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; margin-bottom: 15px;
  font-size: 16px !important;
}

/* 管理後台 */
.admin-btn-float { position: fixed;
  bottom: 10px; right: 10px; background: #6c757d; color: white; border: none; padding: 5px 10px; border-radius: 4px; font-size: 0.8rem; opacity: 0.5;
  cursor: pointer; }
.admin-table { width: 100%; border-collapse: collapse; margin-top: 15px; font-size: 0.9rem;
}
.admin-table th { background: #343a40; color: white; padding: 8px; text-align: left;
}
.admin-table td { border-bottom: 1px solid #ddd; padding: 8px;
}
.btn-del { background: #dc3545; color: white; border: none; padding: 4px 8px; border-radius: 4px;
  cursor: pointer; font-size: 0.8rem; }
.add-form { display: grid; grid-template-columns: 1fr 1fr 1fr auto;
  gap: 10px; background: #e9ecef; padding: 15px; border-radius: 6px; margin-bottom: 20px;
  align-items: end;}

.modal-overlay { position: fixed; top: 0;
  left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); display: flex; justify-content: center; align-items: center; z-index: 1000; backdrop-filter: blur(2px);
}
.modal-box { background: white; padding: 25px; border-radius: 12px; width: 85%; max-width: 400px; display: flex;
  flex-direction: column; animation: popIn 0.3s ease; }
.modal-footer { display: flex; justify-content: flex-end; gap: 10px;
  margin-top:20px; }
.btn-modal { width: auto; padding: 8px 20px; border: none; border-radius: 4px; cursor: pointer;
}
.btn-confirm { background: var(--primary-color); color: white;
}
.btn-cancel { background: #e9ecef; color: #495057;
}

/* --- 字體放大微調 --- */
/* 選擇題選項按鈕 */
.mcq-btn {
  font-size: 1.15rem; 
  padding: 16px 20px;
}

/* 標題文字比例調整 */
.header-title { font-size: 1.4rem; } /* 頂部標題 */
h2 { font-size: 1.5rem; margin-bottom: 15px; } /* 關卡標題 */
.modal-header { font-size: 1.3rem !important; } /* 彈窗標題 */
.task-header { font-size: 1.15rem; } /* 任務列表群組標題 */
.leaderboard-title { font-size: 1.2rem; } /* 排行榜標題 */

/* --- 統一放大系統內所有按鈕的文字 --- */

/* 1. 一般主要按鈕 (包含送出、下一步、返回大廳等) */
.btn {
  font-size: 1.15rem !important; /* 加大字體比例 */
}

/* 2. 彈窗通知上的按鈕 (確定、取消) */
.btn-modal {
  font-size: 1.1rem !important; 
}

/* 3. 錦囊庫與提示按鈕 (原本預設字體較小，同步放大) */
.btn-side-quest, .btn-hint {
  font-size: 1.05rem !important; 
}

/* 放大「選擇要查閱的錦囊」彈窗內的清單按鈕文字 */
.sq-list-btn {
  font-size: 1.15rem !important; 
}