/* 模式切換器容器 */
.mode-switcher {
    position: absolute;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 25px;
    padding: 4px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    z-index: 20;
    backdrop-filter: blur(10px);
}

.mode-btn {
    padding: 8px 16px;
    border-radius: 20px;
    border: none;
    background: transparent;
    color: #aaa;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.mode-btn.active {
    color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

/* 自由模式激活樣式 */
.mode-btn[data-mode="free"].active {
    background: #34c759; /* 綠色 */
}

/* 任務模式激活樣式 */
.mode-btn[data-mode="mission"].active {
    background: #ff3b30; /* 紅色 */
}

/* 配合模式切換的相機邊框效果 (選做) */
body.mode-free .camera-container {
    border: 0px solid transparent;
}

body.mode-mission .camera-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 4px solid rgba(255, 59, 48, 0.5);
    pointer-events: none;
    z-index: 5;
    animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
    0% { border-color: rgba(255, 59, 48, 0.3); }
    50% { border-color: rgba(255, 59, 48, 0.7); }
    100% { border-color: rgba(255, 59, 48, 0.3); }
}