/* --- 加载屏幕 --- */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000000;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    transition: opacity 0.5s ease-out;
}

#loading-screen img {
    width: 150px; /* 或者您希望的任何尺寸 */
    height: auto;
    animation: pulse-loader 2s infinite;
}

@keyframes pulse-loader {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.1);
        opacity: 1;
    }
    100% {
        transform: scale(1);
        opacity: 0.8;
    }
}


/* --- 基本重置和全局样式 --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: white;
    overflow: hidden; /* 防止视频导致滚动条 */
}

/* --- 视频背景 --- */
.video-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-color: #000000;
}

.bg-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain; /* 保持视频比例，留出黑边 */
    opacity: 0;
    transition: opacity 0.2s ease-in-out; /* 交叉淡入淡出动画 */
}

.bg-video.active {
    opacity: 1;
}

/* --- 内容覆盖层 --- */
.content-overlay {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center; /* 垂直居中 */
    align-items: center;
    padding: 25px;
    z-index: 1;
    gap: 40px; /* 在识别结果和按钮之间添加一些间距 */
}

/* --- 语音识别结果显示 --- */
.transcript-container {
    width: 80%;
    max-width: 600px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    text-align: center;
    opacity: 0;
    transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
    pointer-events: none; /* 默认不响应鼠标事件 */
    transform: translateY(20px);
}

.transcript-container.visible {
    opacity: 1;
    transform: translateY(0);
}

#transcript {
    font-size: 1.5rem; /* 稍大一点的字体 */
    color: #fff;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.6);
    min-height: 50px; /* 给一个最小高度，防止没内容时跳动 */
    line-height: 1.4;
}
    transform: scale(1.05);
}

#sentiment-result {
    color: white;
    font-size: 16px;
    margin: 10px 0;
    min-height: 20px;
    text-align: center;
}

/* 本地语音识别测试区域样式 */
.local-asr-container {
    position: fixed;
    bottom: 150px; /* 调整位置，避免与情感分析区域重叠 */
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    z-index: 1001;
    color: white;
    text-align: center;
}

#local-mic-button {
    background-color: #4CAF50; /* 绿色 */
    color: white;
    border: none;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s;
}

#local-mic-button:hover {
    background-color: #45a049;
}

#local-mic-button.recording {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(76, 175, 80, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(76, 175, 80, 0);
    }
}

#local-asr-result {
    font-weight: bold;
    color: #2196F3; /* 蓝色 */
}

/* --- 悬浮按钮和菜单 --- */
#floating-button {
    position: fixed;
    bottom: 120px; /* 调整位置，使其在麦克风按钮上方 */
    right: 30px;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    z-index: 10;
}

#floating-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

#floating-button i {
    font-size: 24px;
    color: white;
}

#menu-container {
    position: fixed;
    bottom: 200px; /* 调整位置，使其在悬浮按钮上方 */
    right: 30px;
    width: 150px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    z-index: 9;
    transition: opacity 0.3s ease, transform 0.3s ease;
    transform-origin: bottom right;
}

#menu-container.hidden {
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
}

.menu-item {
    display: block;
    width: 100%;
    padding: 12px;
    background: none;
    border: none;
    color: white;
    font-size: 1rem;
    text-align: left;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.2s ease;
}

.menu-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}


/* --- 底部内容 --- */
.bottom-bar {
    width: 100%;
    display: flex;
    flex-direction: column; /* 垂直排列 */
    justify-content: center; /* 水平居中 */
    align-items: center; /* 垂直居中 */
    position: relative; /* 为链接定位 */
}

.mic-button {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.mic-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.mic-button:active {
    transform: scale(1.05);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.mic-button i {
    font-size: 36px;
    color: white;
}

/* 麦克风 "监听中" 的动画效果 */
.mic-button.is-listening {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 154, 158, 0.7);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(255, 154, 158, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 154, 158, 0);
    }
}

.footer-credit {
    margin-top: 20px; /* 与麦克风按钮的间距 */
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.footer-credit:hover {
    color: white;
    text-decoration: underline;
}

/* --- 聊天控制面板 --- */
.chat-control-panel {
    position: fixed;
    top: 30px;
    left: 30px;
    display: flex;
    gap: 15px;
    z-index: 1002; /* 确保在所有元素之上 */
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 0.8s ease 2s, transform 0.8s ease 2s; /* 延迟2秒显示 */
}

.chat-control-panel.visible {
    opacity: 1;
    transform: translateY(0);
}

.control-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    user-select: none;
    pointer-events: auto;
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.control-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.control-btn.primary {
    background: rgba(255, 107, 157, 0.9);
    color: white;
}

.control-btn.primary:hover {
    background: rgba(255, 107, 157, 1);
    box-shadow: 0 6px 20px rgba(255, 107, 157, 0.3);
}

.control-btn.secondary {
    background: rgba(78, 205, 196, 0.9);
    color: white;
}

.control-btn.secondary:hover {
    background: rgba(78, 205, 196, 1);
    box-shadow: 0 6px 20px rgba(78, 205, 196, 0.3);
}

.control-btn i {
    font-size: 16px;
}

.control-btn span {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* --- 响应式设计 --- */
@media (max-width: 600px) {
    .content-overlay {
        padding: 20px;
    }

    .top-bar label {
        font-size: 0.9rem;
    }

    .progress-container {
        height: 10px;
    }

    .mic-button {
        width: 70px;
        height: 70px;
    }

    .mic-button i {
        font-size: 30px;
    }

    .footer-credit {
        margin-top: 15px;
        font-size: 0.9rem;
    }

    .chat-control-panel {
        top: 20px;
        left: 20px;
        gap: 10px;
    }

    .control-btn {
        padding: 10px 14px;
        font-size: 13px;
    }

    .control-btn i {
        font-size: 14px;
    }
}