body {
    font-family: "Microsoft JhengHei", sans-serif;
    background-color: #f4f1ea;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.bwa-container {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 40px 0;
    perspective: 600px; /* 增加 3D 感 */
}

/* 模擬杯片外型 */
.cup {
    width: 60px;
    height: 100px;
    background-color: #b32d2e;
    border-radius: 50% 50% 10% 10% / 100% 100% 0% 0%;
    transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 2px solid #801a1b;
}

/* 平面代表「平的那面」朝上，圓弧代表「凸的那面」朝上 */
.flat { background-color: #d9534f; border-bottom: 8px solid #a94442; }
.round { border-radius: 50% 50% 50% 50%; transform: rotateX(180deg); }

#resultText {
    font-size: 1.5rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    min-height: 1.6em;
}

button {
    padding: 10px 25px;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    margin: 0 5px;
}

#throwBtn {
    padding: 18px 50px; /* 大幅度增加點擊區域 */
    font-size: 1.4rem;
    font-weight: bold;
    background-color: #ff6b6b;
    border: 3px solid #4a4a4a; /* 加入粗邊框，延續首頁風格 */
    box-shadow: 4px 4px 0px #4a4a4a; /* 漫畫風陰影 */
    border-radius: 40px;
    cursor: pointer;
    transition: transform 0.1s;
}

#throwBtn:disabled {
    background: #999;
    cursor: not-allowed;
}

#throwBtn:active {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0px #4a4a4a;
}

#resetBtn { background-color: #666; color: white; }



#ui {
    position: absolute; 
    bottom: 10%; 
    width: 100%; 
    /* 核心修正 1：讓容器本身不接收點擊，點擊可以穿透到 3D 場景 */
    pointer-events: none; 
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 100; /* 確保在最上層 */
    
}
#ui * { pointer-events: auto; } /* 讓按鈕可以點擊 */

#result, #throwBtn, #homeBtn {
    /* 核心修正 2：讓按鈕和文字框重新接收點擊 */
    pointer-events: auto; 
}

#result {
    font-weight: bold;
    color: #ffda79; /* 使用鮮明的黃色 */
    background: rgba(0, 0, 0, 0.6);
    padding: 10px 30px;
    border-radius: 50px;
    margin-bottom: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    
}