// AI 对话页面 - 简约大气风格
.ai-chat-page {
    display: flex;
    height: 100%;
    width: 100%;
    background: var(--bg-gradient);
    color: var(--text-primary);
    overflow: hidden;

    .chat-container {
        flex: 1;
        display: flex;
        flex-direction: column;
        max-width: 1200px;
        margin: 0 auto;
        width: 100%;
    }

    // ========== 顶部 Header - 已移除 ==========
    // 模型选择器现已集成到输入框



    // ========== 聊天区域 ==========
    .chat-main {
        flex: 1;
        display: flex;
        flex-direction: column;
        background: var(--bg-secondary);
        position: relative;
        overflow: hidden;

        // 空状态
        .empty-state {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 40px;

            .icon {
                width: 80px;
                height: 80px;
                border-radius: 50%;
                background: var(--primary-light);
                display: flex;
                align-items: center;
                justify-content: center;
                margin-bottom: 24px;

                svg {
                    width: 40px;
                    height: 40px;
                    color: var(--primary);
                }
            }

            h2 {
                font-size: 20px;
                font-weight: 600;
                color: var(--text-primary);
                margin: 0 0 8px;
            }

            p {
                font-size: 14px;
                color: var(--text-tertiary);
                margin: 0;
            }
        }

        // 消息列表
        .messages-list {
            flex: 1;
            overflow-y: auto;
            padding: 24px 32px;
            display: flex;
            flex-direction: column;
            gap: 20px;

            &::-webkit-scrollbar {
                width: 6px;
            }

            &::-webkit-scrollbar-track {
                background: transparent;
            }

            &::-webkit-scrollbar-thumb {
                background: var(--border-color);
                border-radius: 3px;
            }

            .message-row {
                display: flex;
                gap: 12px;
                max-width: 80%;
                animation: messageIn 0.3s ease-out;

                // 用户消息
                &.user {
                    align-self: flex-end;
                    flex-direction: row-reverse;

                    .avatar {
                        background: var(--primary-light);
                        color: var(--primary);
                    }

                    .bubble {
                        background: var(--primary-gradient);
                        color: white;
                        border-radius: 18px 18px 4px 18px;
                        box-shadow: 0 2px 10px color-mix(in srgb, var(--primary) 20%, transparent);

                        .content {
                            color: white;
                        }
                    }
                }

                // AI 消息
                &.ai {
                    align-self: flex-start;

                    .avatar {
                        background: var(--bg-tertiary);
                        color: var(--text-secondary);
                    }

                    .bubble {
                        background: var(--card-bg);
                        border: 1px solid var(--border-color);
                        border-radius: 18px 18px 18px 4px;
                        backdrop-filter: blur(10px);
                        -webkit-backdrop-filter: blur(10px);
                    }
                }

                .avatar {
                    flex-shrink: 0;
                    width: 32px;
                    height: 32px;
                    border-radius: 50%;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                }

                .bubble {
                    padding: 12px 16px;
                    flex: 1;
                    min-width: 0;

                    .content,
                    .markdown-content {
                        font-size: 14px;
                        line-height: 1.6;
                        color: var(--text-primary);
                        word-wrap: break-word;
                        overflow-wrap: break-word;
                    }

                    // Markdown 样式
                    .markdown-content {
                        p {
                            margin: 0 0 0.8em;

                            &:last-child {
                                margin-bottom: 0;
                            }
                        }

                        h1,
                        h2,
                        h3,
                        h4,
                        h5,
                        h6 {
                            margin: 1em 0 0.5em;
                            font-weight: 600;
                            line-height: 1.3;
                            color: var(--text-primary);

                            &:first-child {
                                margin-top: 0;
                            }
                        }

                        h1 {
                            font-size: 1.5em;
                        }

                        h2 {
                            font-size: 1.3em;
                        }

                        h3 {
                            font-size: 1.1em;
                        }

                        ul,
                        ol {
                            margin: 0.5em 0;
                            padding-left: 1.5em;
                        }

                        li {
                            margin: 0.3em 0;
                        }

                        code {
                            background: var(--bg-tertiary);
                            padding: 2px 6px;
                            border-radius: 4px;
                            font-family: 'Consolas', 'Monaco', monospace;
                            font-size: 0.9em;
                        }

                        pre {
                            background: var(--bg-tertiary);
                            padding: 12px;
                            border-radius: 8px;
                            overflow-x: auto;
                            margin: 0.8em 0;

                            code {
                                background: none;
                                padding: 0;
                            }
                        }

                        blockquote {
                            border-left: 3px solid var(--primary);
                            padding-left: 12px;
                            margin: 0.8em 0;
                            color: var(--text-secondary);
                        }

                        a {
                            color: var(--primary);
                            text-decoration: none;

                            &:hover {
                                text-decoration: underline;
                            }
                        }

                        strong {
                            font-weight: 600;
                            color: var(--text-primary);
                        }

                        hr {
                            border: none;
                            border-top: 1px solid var(--border-color);
                            margin: 1em 0;
                        }

                        table {
                            border-collapse: collapse;
                            width: 100%;
                            margin: 0.8em 0;

                            th,
                            td {
                                border: 1px solid var(--border-color);
                                padding: 8px 12px;
                                text-align: left;
                            }

                            th {
                                background: var(--bg-tertiary);
                                font-weight: 600;
                            }
                        }
                    }
                }
            }

            .list-spacer {
                height: 100px;
                flex-shrink: 0;
            }
        }

        // 输入区域
        .input-area {
            position: absolute;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 64px);
            max-width: 800px;
            z-index: 10;

            .input-wrapper {
                display: flex;
                align-items: flex-end;
                gap: 10px;
                background: var(--card-bg);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border: 1px solid var(--border-color);
                border-radius: 20px;
                padding: 10px 14px;
                box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
                transition: all 0.2s ease;

                &:focus-within {
                    border-color: var(--primary);
                    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1),
                        0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent);
                }

                textarea {
                    flex: 1;
                    min-height: 24px;
                    max-height: 120px;
                    padding: 8px 0;
                    background: transparent;
                    border: none;
                    resize: none;
                    color: var(--text-primary);
                    font-size: 14px;
                    font-family: inherit;
                    line-height: 1.5;

                    &:focus {
                        outline: none;
                    }

                    &::placeholder {
                        color: var(--text-tertiary);
                    }

                    &:disabled {
                        cursor: not-allowed;
                    }
                }

                .input-actions {
                    display: flex;
                    align-items: center;
                    gap: 8px;
                    flex-shrink: 0;

                    // 模型选择器
                    .model-selector {
                        position: relative;

                        .model-btn {
                            display: flex;
                            align-items: center;
                            justify-content: center;
                            gap: 6px;
                            width: auto;
                            height: 36px;
                            padding: 6px 12px;
                            background: transparent;
                            border: 1px solid var(--border-color);
                            border-radius: 10px;
                            cursor: pointer;
                            color: var(--text-secondary);
                            font-size: 12px;
                            font-weight: 500;
                            white-space: nowrap;
                            transition: all 0.2s ease;
                            flex-shrink: 0;

                            svg {
                                flex-shrink: 0;

                                &.spin {
                                    animation: spin 1s linear infinite;
                                }
                            }

                            &:hover:not(:disabled) {
                                background: var(--bg-hover);
                                border-color: var(--text-tertiary);
                                color: var(--text-primary);
                            }

                            &.loaded {
                                background: color-mix(in srgb, var(--primary) 15%, transparent);
                                border-color: var(--primary);
                                color: var(--primary);
                            }

                            &.loading {
                                opacity: 0.7;
                            }

                            &.disabled {
                                opacity: 0.5;
                                cursor: not-allowed;
                            }
                        }

                        .model-dropdown {
                            position: absolute;
                            bottom: 100%;
                            right: 0;
                            margin-bottom: 8px;
                            background: var(--card-bg);
                            backdrop-filter: blur(20px);
                            -webkit-backdrop-filter: blur(20px);
                            border: 1px solid var(--border-color);
                            border-radius: 12px;
                            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
                            z-index: 100;
                            overflow: hidden;
                            animation: dropdownIn 0.2s ease-out;
                            min-width: 140px;

                            .model-option {
                                display: flex;
                                align-items: center;
                                justify-content: space-between;
                                padding: 10px 14px;
                                cursor: pointer;
                                font-size: 13px;
                                color: var(--text-primary);
                                transition: background 0.15s ease;
                                white-space: nowrap;

                                &:hover:not(.disabled) {
                                    background: var(--bg-hover);
                                }

                                &.active {
                                    background: color-mix(in srgb, var(--primary) 20%, transparent);
                                    color: var(--primary);
                                    font-weight: 600;

                                    .check {
                                        color: var(--primary);
                                    }
                                }

                                .check {
                                    margin-left: 8px;
                                    color: var(--text-tertiary);
                                    font-weight: 600;
                                }
                            }
                        }
                    }

                    .mode-toggle {
                        width: 36px;
                        height: 36px;
                        display: flex;
                        align-items: center;
                        justify-content: center;
                        background: transparent;
                        border: 1px solid var(--border-color);
                        border-radius: 10px;
                        cursor: pointer;
                        color: var(--text-tertiary);
                        transition: all 0.2s ease;
                        flex-shrink: 0;

                        &:hover:not(:disabled) {
                            background: var(--bg-hover);
                            color: var(--text-primary);
                        }

                        &.active {
                            background: color-mix(in srgb, var(--primary) 15%, transparent);
                            border-color: var(--primary);
                            color: var(--primary);
                        }

                        &:disabled {
                            opacity: 0.4;
                            cursor: not-allowed;
                        }
                    }

                    .send-btn {
                        width: 36px;
                        height: 36px;
                        display: flex;
                        align-items: center;
                        justify-content: center;
                        background: var(--primary-gradient);
                        border: none;
                        border-radius: 10px;
                        cursor: pointer;
                        color: white;
                        transition: all 0.2s ease;
                        flex-shrink: 0;
                        box-shadow: 0 2px 8px color-mix(in srgb, var(--primary) 25%, transparent);

                        &:hover:not(:disabled) {
                            transform: scale(1.05);
                            box-shadow: 0 4px 12px color-mix(in srgb, var(--primary) 35%, transparent);
                        }

                        &:active:not(:disabled) {
                            transform: scale(0.98);
                        }

                        &:disabled {
                            background: var(--bg-tertiary);
                            color: var(--text-tertiary);
                            box-shadow: none;
                            cursor: not-allowed;
                        }
                    }
                }
            }
        }
    }
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes dropdownIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}