/* AI对话组件样式 */

/* 聊天组件容器 */
.chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* 悬浮球按钮 */
.chat-bubble {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    font-size: 24px;
}

.chat-bubble:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.chat-bubble i {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* 对话框容器 */
.chat-box {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 360px;
    height: 520px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    display: none;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.3s ease;
}

.chat-box.active {
    display: flex;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 对话框头部 */
.chat-header {
    padding: 16px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header-title {
    font-size: 16px;
    font-weight: 600;
}

.chat-header-subtitle {
    font-size: 12px;
    opacity: 0.9;
    margin-top: 2px;
}

.chat-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.chat-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 消息列表容器 */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    background: #f5f7fa;
}

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 3px;
}

/* 消息气泡 */
.message {
    margin-bottom: 12px;
    display: flex;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-content {
    max-width: 75%;
    padding: 10px 14px;
    border-radius: 12px;
    word-wrap: break-word;
    line-height: 1.5;
    font-size: 14px;
}

/* 用户消息（右侧） */
.message.user {
    justify-content: flex-end;
}

.message.user .message-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-bottom-right-radius: 4px;
}

/* AI消息（左侧） */
.message.bot {
    justify-content: flex-start;
}

.message.bot .message-content {
    background: white;
    color: #2d3748;
    border-bottom-left-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* 打字中动画 */
.message.typing .message-content {
    display: flex;
    align-items: center;
    gap: 4px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #cbd5e0;
    animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* 输入区域 */
.chat-input {
    display: flex;
    padding: 12px;
    background: white;
    border-top: 1px solid #e2e8f0;
    gap: 8px;
}

.chat-input input {
    flex: 1;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    padding: 10px 16px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.chat-input input:focus {
    border-color: #667eea;
}

.chat-input button {
    padding: 10px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: transform 0.2s, box-shadow 0.2s;
}

.chat-input button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.chat-input button:active {
    transform: translateY(0);
}

/* 欢迎消息 */
.welcome-message {
    text-align: center;
    padding: 20px;
    color: #718096;
}

.welcome-message i {
    font-size: 48px;
    color: #667eea;
    margin-bottom: 12px;
}

.welcome-message h3 {
    font-size: 16px;
    color: #2d3748;
    margin: 0 0 8px 0;
}

.welcome-message p {
    font-size: 13px;
    margin: 0;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .chat-box {
        width: calc(100vw - 40px);
        height: calc(100vh - 120px);
        max-height: 600px;
    }
    
    .chat-widget {
        bottom: 15px;
        right: 15px;
    }
}