/* 移动端响应式优化 */

/* 小屏幕 (手机) */
@media (max-width: 768px) {
    /* 导航栏 */
    .navbar {
        padding: 0.75rem 1rem !important;
        height: auto !important;
        min-height: 60px;
        display: grid !important;
        grid-template-columns: auto 1fr auto !important;
        align-items: center !important;
        column-gap: 0.75rem !important;
    }
    
    .nav-brand h1 {
        font-size: 1.1rem !important;
    }

    .top-bell-btn {
        display: inline-flex !important;
        width: 38px !important;
        height: 38px !important;
        justify-self: end !important;
    }
    
    .nav-links {
        flex-wrap: wrap;
        gap: 0.5rem !important;
    }
    
    .nav-link {
        padding: 0.4rem 0.8rem !important;
        font-size: 0.85rem !important;
    }
    
    .user-info {
        flex-wrap: wrap;
        gap: 0.5rem !important;
        padding-left: 0.5rem !important;
    }
    
    .user-credits, .user-name {
        font-size: 0.85rem !important;
    }
    
    .btn-recharge, .btn-logout {
        padding: 0.4rem 0.8rem !important;
        font-size: 0.85rem !important;
    }
    
    /* 侧边栏 */
    .sidebar {
        width: 100% !important;
        max-width: 280px !important;
        transform: translateX(-100%);
    }
    
    .sidebar.collapsed {
        transform: translateX(-100%);
    }
    
    .sidebar:not(.collapsed) {
        transform: translateX(0);
    }
    
    /* 对话容器 */
    .chat-container {
        margin-left: 0 !important;
        margin-right: 0 !important;
        display: flex !important;
        flex-direction: column !important;
        height: 100% !important;
        min-height: 0 !important;
        overflow: hidden !important;
    }

    .chat-messages {
        flex: 1 1 auto !important;
        min-height: 0 !important;
        height: auto !important;
        overflow-y: auto !important;
        padding: 1rem 1rem 6.25rem !important;
    }

    .current-model-indicator {
        display: none !important;
    }

    .mobile-current-model-indicator {
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 0.4rem !important;
        min-width: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        margin: 0 !important;
        padding: 0.45rem 0.8rem !important;
        border-radius: 999px !important;
        background: rgba(255, 255, 255, 0.08) !important;
        border: 1px solid rgba(255, 255, 255, 0.1) !important;
        color: var(--text-secondary) !important;
        font-size: 0.84rem !important;
        line-height: 1.2 !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        text-align: center !important;
        justify-self: stretch !important;
        align-self: center !important;
        pointer-events: none !important;
        z-index: 2 !important;
    }

    .mobile-current-model-indicator svg {
        flex: 0 0 auto !important;
        color: var(--accent) !important;
    }

    .mobile-current-model-indicator span {
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        white-space: nowrap !important;
        flex: 0 1 auto !important;
        min-width: 0 !important;
        text-align: center !important;
    }

    .message-actions {
        display: flex !important;
        opacity: 1 !important;
        visibility: visible !important;
        pointer-events: auto !important;
        flex-wrap: wrap !important;
        gap: 0.45rem !important;
    }

    .message.assistant .message-actions {
        padding-left: 3rem !important;
        margin-top: 0.15rem !important;
    }

    .message.user .message-actions {
        padding-right: 3rem !important;
        margin-top: 0.15rem !important;
    }

    .message-action-btn {
        min-width: 36px !important;
        min-height: 36px !important;
    }
    
    .message-content {
        max-width: 90% !important;
        padding: 0.875rem 1rem !important;
        font-size: 0.95rem !important;
    }
    
    /* 历史面板 */
    .history-panel {
        width: 100% !important;
        max-width: 100% !important;
        transform: translateX(100%) !important;
        transition: transform 0.3s ease !important;
    }

    .history-panel:not(.hidden) {
        transform: translateX(0) !important;
    }
    
    /* 输入区域 */
    .chat-input-container {
        padding: 0.65rem 0.9rem 0.35rem !important;
        flex-shrink: 0 !important;
    }

    .chat-input-wrapper {
        position: relative !important;
        gap: 0.55rem !important;
        width: 100% !important;
        max-width: none !important;
        padding: 0.65rem 0.85rem 0.45rem !important;
        border-radius: 22px !important;
        background: rgba(26, 31, 58, 0.96) !important;
        border: 1px solid rgba(255, 255, 255, 0.08) !important;
        box-shadow: 0 14px 34px rgba(0, 0, 0, 0.28) !important;
        overflow: visible !important;
    }

    .input-actions {
        position: relative !important;
        display: grid !important;
        grid-template-columns: auto minmax(0, 1fr) auto !important;
        align-items: center !important;
        column-gap: 0.75rem !important;
        width: 100% !important;
        overflow: visible !important;
        min-width: 0 !important;
    }

    .input-actions-left {
        position: relative !important;
        display: flex !important;
        align-items: center !important;
        gap: 0.5rem !important;
        min-width: 0 !important;
        z-index: 4 !important;
    }

    .mobile-upload-backdrop {
        position: fixed !important;
        inset: 0 !important;
        background: rgba(4, 8, 20, 0.22) !important;
        opacity: 0 !important;
        visibility: hidden !important;
        pointer-events: none !important;
        transition: opacity 0.2s ease, visibility 0.2s ease !important;
        z-index: 1 !important;
    }

    .mobile-upload-backdrop.is-open {
        opacity: 1 !important;
        visibility: visible !important;
        pointer-events: auto !important;
    }

    .mobile-upload-toggle {
        width: 42px !important;
        height: 42px !important;
        border: 1px solid rgba(255, 255, 255, 0.14) !important;
        border-radius: 50% !important;
        background: rgba(255, 255, 255, 0.06) !important;
        color: var(--text-primary) !important;
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
        flex: 0 0 42px !important;
        cursor: pointer !important;
        transition: all 0.2s ease !important;
        position: relative !important;
        z-index: 4 !important;
    }

    .mobile-upload-toggle.is-open {
        background: rgba(255, 107, 53, 0.16) !important;
        border-color: rgba(255, 107, 53, 0.45) !important;
        color: #fff !important;
    }

    .mobile-upload-toggle svg {
        transition: transform 0.2s ease !important;
    }

    .mobile-upload-toggle.is-open svg {
        transform: rotate(45deg) !important;
    }

    .mobile-upload-actions {
        position: absolute !important;
        left: 0 !important;
        bottom: calc(100% + 12px) !important;
        display: flex !important;
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 0.65rem !important;
        width: 136px !important;
        padding: 0.7rem !important;
        border-radius: 18px !important;
        background: rgba(12, 16, 38, 0.98) !important;
        border: 1px solid rgba(255, 255, 255, 0.08) !important;
        box-shadow: 0 18px 40px rgba(0, 0, 0, 0.34) !important;
        opacity: 0 !important;
        visibility: hidden !important;
        transform: translateY(10px) scale(0.96) !important;
        transform-origin: left bottom !important;
        pointer-events: none !important;
        transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease !important;
        z-index: 4 !important;
    }

    .mobile-upload-actions::after {
        content: '' !important;
        position: absolute !important;
        left: 14px !important;
        bottom: -7px !important;
        width: 14px !important;
        height: 14px !important;
        background: rgba(12, 16, 38, 0.98) !important;
        border-right: 1px solid rgba(255, 255, 255, 0.08) !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
        transform: rotate(45deg) !important;
    }

    .mobile-upload-actions.is-open {
        opacity: 1 !important;
        visibility: visible !important;
        transform: translateY(0) scale(1) !important;
        pointer-events: auto !important;
    }

    .mobile-camera-btn {
        display: flex !important;
        align-items: center !important;
        justify-content: flex-start !important;
        gap: 0.65rem !important;
        width: 100% !important;
        min-width: 0 !important;
        height: 48px !important;
        padding: 0 0.95rem !important;
        border-radius: 14px !important;
        font-size: 0.86rem !important;
        font-weight: 600 !important;
        white-space: nowrap !important;
        flex: 0 0 auto !important;
        background: rgba(255, 255, 255, 0.06) !important;
        border: 1px solid rgba(255, 255, 255, 0.12) !important;
        color: var(--text-primary) !important;
    }

    .mobile-camera-btn span:first-child {
        font-size: 1.05rem !important;
        line-height: 1 !important;
    }

    .btn-upload {
        display: none !important;
    }

    .btn-send {
        width: 46px !important;
        height: 46px !important;
        min-width: 46px !important;
        min-height: 46px !important;
        border-radius: 50% !important;
        flex: 0 0 46px !important;
        margin-left: auto !important;
        align-self: center !important;
        position: relative !important;
        z-index: 4 !important;
        overflow: visible !important;
        box-shadow: 0 8px 22px rgba(255, 107, 53, 0.35) !important;
    }
    
    .chat-input {
        font-size: 0.95rem !important;
        min-height: 48px !important;
        max-height: 3cm !important;
        padding: 0.875rem !important;
        line-height: 1.5 !important;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch;
    }
    
    .sidebar-toggle {
        display: none !important;
    }

    .chat-header-actions {
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
        gap: 0.75rem !important;
        padding: 0.7rem 0.85rem 0 !important;
        flex-shrink: 0 !important;
    }

    .chat-header-actions .chat-history-btn,
    .chat-header-actions .btn-new-chat {
        height: 36px !important;
        padding: 0 0.8rem !important;
        font-size: 0.82rem !important;
        border-radius: 10px !important;
        display: inline-flex !important;
        align-items: center !important;
        gap: 0.42rem !important;
        flex: 0 0 auto !important;
    }
    
    /* 主内容区域 */
    .main-content {
        padding: 1rem 1rem 0.35rem !important;
        margin-right: 0 !important;
        display: flex !important;
        flex-direction: column !important;
        min-height: 0 !important;
        height: 100% !important;
    }
    
    .upload-card {
        padding: 1.5rem !important;
        width: 100% !important;
    }
    
    .upload-card h2 {
        font-size: 1.3rem !important;
    }
    
    .upload-area {
        height: 250px !important;
    }

    .task-detail-grid {
        grid-template-columns: minmax(0, 1fr) !important;
    }
    
    .form-row {
        grid-template-columns: 1fr !important;
    }
    
    /* 任务面板手机端默认隐藏 */
    .task-panel {
        width: 100% !important;
        max-width: 100% !important;
        transform: translateX(100%) !important;
    }

    .task-panel.task-panel-open {
        transform: translateX(0) !important;
    }

    /* 任务面板悬浮按钮 - 移到左下角避免与公告按钮重叠 */
    .task-float-btn {
        right: auto !important;
        left: 1rem !important;
        bottom: 72px !important;
        width: 52px !important;
        height: 52px !important;
        z-index: 1001 !important;
    }

    /* 公告入口已移至顶部铃铛 */
    .announcement-btn {
        bottom: auto !important;
        left: auto !important;
        right: auto !important;
        width: auto !important;
        height: auto !important;
        z-index: auto !important;
    }

    /* 手机端工作区按钮已移至顶部工具栏 */
    .history-float-btn {
        display: none !important;
    }
    .recharge-modal {
        padding: 1rem !important;
    }
    
    .recharge-modal-content {
        max-width: 100% !important;
    }
    
    .recharge-modal-header {
        padding: 1rem 1.5rem !important;
    }
    
    .recharge-modal-header h3 {
        font-size: 1.2rem !important;
    }
    
    .recharge-modal-body {
        padding: 1.5rem !important;
    }
    
    .recharge-options {
        grid-template-columns: 1fr !important;
        gap: 0.75rem !important;
    }
    
    .recharge-option {
        padding: 1.25rem !important;
    }
    
    .recharge-amount {
        font-size: 1.3rem !important;
    }
    
    /* 公告弹窗 */
    .announcement-modal {
        padding: 1rem !important;
    }
    
    .announcement-modal-content {
        max-width: 100% !important;
        width: 95% !important;
    }
    
    .announcement-modal-header {
        padding: 1rem 1.25rem !important;
    }
    
    .announcement-modal-header h3 {
        font-size: 1.1rem !important;
    }
    
    .announcement-modal-body {
        padding: 1.25rem !important;
    }
    
    .announcement-content {
        padding: 1rem !important;
    }
    
    .announcement-content p {
        font-size: 13px !important;
    }
    
    .announcement-btn {
        bottom: 78px !important;
        left: 1rem !important;
        right: auto !important;
        width: 50px !important;
        height: 50px !important;
    }
    
    /* 任务详情弹窗 */
    .task-modal {
        padding: 1rem !important;
    }
    
    .task-modal-content {
        max-width: 100% !important;
    }
    
    .task-modal-header {
        padding: 1rem 1.5rem !important;
    }
    
    .task-modal-body {
        padding: 1.5rem !important;
    }
    
    .task-detail-grid {
        grid-template-columns: 1fr !important;
    }
    
    /* 结果网格 */
    .results-grid {
        grid-template-columns: 1fr !important;
        gap: 1.5rem !important;
    }
    
    /* 代码块 */
    .code-block-wrapper {
        max-height: 400px !important;
    }
    
    .code-block-wrapper pre {
        max-height: 350px !important;
        font-size: 0.85rem !important;
    }
    
    /* 图片查看器 */
    .image-viewer-modal {
        padding: 1rem !important;
    }
    
    .image-viewer-close,
    .image-viewer-download {
        top: 1rem !important;
    }
}

/* 超小屏幕 (小手机) */
@media (max-width: 480px) {
    .navbar {
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        display: grid !important;
        grid-template-columns: auto 1fr auto !important;
        align-items: center !important;
        justify-content: initial !important;
        gap: 0.5rem !important;
        padding: 0 0.75rem !important;
        height: 56px !important;
        min-height: 56px !important;
    }
    
    .nav-brand h1 {
        font-size: 1rem !important;
    }
    
    .nav-links {
        width: auto !important;
        justify-content: initial;
    }
    
    .user-info {
        width: auto !important;
        border-left: none;
        border-top: none;
        padding-left: 0 !important;
        padding-top: 0 !important;
    }
    
    .sidebar {
        max-width: 100% !important;
    }
    
    .message-content {
        max-width: 95% !important;
        font-size: 0.9rem !important;
    }

    .chat-input-container {
        padding: 0.4rem 0.6rem 0.2rem !important;
    }

    .chat-input-wrapper {
        padding: 0.55rem 0.6rem 0.35rem !important;
        border-radius: 20px !important;
    }

    .mobile-upload-toggle {
        width: 40px !important;
        height: 40px !important;
        flex-basis: 40px !important;
    }

    .mobile-upload-actions {
        width: 124px !important;
        bottom: calc(100% + 10px) !important;
        padding: 0.55rem !important;
        gap: 0.5rem !important;
    }

    .mobile-upload-actions::after {
        left: 12px !important;
    }

    .mobile-camera-btn {
        height: 44px !important;
        padding: 0 0.8rem !important;
        border-radius: 12px !important;
        flex: 0 0 auto !important;
    }

    .mobile-camera-btn span:last-child {
        display: inline !important;
        font-size: 0.8rem !important;
    }

    .btn-send {
        width: 44px !important;
        height: 44px !important;
        min-width: 44px !important;
        min-height: 44px !important;
        flex-basis: 44px !important;
        margin-left: auto !important;
        align-self: center !important;
        position: relative !important;
        z-index: 4 !important;
        overflow: visible !important;
    }
    
    .recharge-amount {
        font-size: 1.2rem !important;
    }
    
    .recharge-credits {
        font-size: 0.9rem !important;
    }
    
    .announcement-modal-header h3 {
        font-size: 1rem !important;
    }
    
    .announcement-content p {
        font-size: 12px !important;
    }
}

/* 平板 */
@media (min-width: 769px) and (max-width: 1024px) {
    .sidebar {
        width: 260px !important;
        min-width: 260px !important;
        max-width: 260px !important;
    }
    
    .chat-container {
        margin-left: 260px !important;
        margin-right: 260px !important;
    }
    
    .history-panel {
        width: 260px !important;
        min-width: 260px !important;
        max-width: 260px !important;
    }
    
    .task-panel {
        width: 320px !important;
    }
    
    .main-content {
        margin-right: 320px !important;
    }
    
    .task-float-btn {
        right: 340px !important;
    }
}

/* 横屏手机 */
@media (max-width: 768px) and (orientation: landscape) {
    .navbar {
        padding: 0.5rem 1rem !important;
        min-height: 50px !important;
    }
    
    .chat-messages {
        padding: 0.75rem !important;
    }
    
    .upload-area {
        height: 200px !important;
    }
}

/* =============================================
   底部导航栏 (手机端 App 风格)
   ============================================= */

/* PC端隐藏手机专属元素 */
.mobile-bottom-nav,
.mobile-top-user,
.mobile-model-selector,
.mobile-current-model-indicator,
.history-float-btn {
    display: none;
}

@media (max-width: 768px) {
    /* 显示底部导航栏 */
    .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 60px;
        background: var(--bg-card, #1a1a2e);
        border-top: 1px solid var(--border, rgba(255,255,255,0.1));
        z-index: 1000;
        align-items: stretch;
        box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
    }

    .mobile-bottom-nav .nav-tab {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        text-decoration: none;
        color: var(--text-secondary, #888);
        font-size: 10px;
        font-weight: 500;
        transition: color 0.2s ease;
        -webkit-tap-highlight-color: transparent;
        position: relative;
    }

    .mobile-bottom-nav .nav-tab svg {
        width: 22px;
        height: 22px;
        stroke: currentColor;
        transition: transform 0.2s ease;
    }

    .mobile-bottom-nav .nav-tab.active {
        color: var(--primary, #6C63FF);
    }

    .mobile-bottom-nav .nav-tab.active svg {
        transform: translateY(-2px);
    }

    .mobile-bottom-nav .nav-tab.active::before {
        content: '';
        position: absolute;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 32px;
        height: 3px;
        background: var(--primary, #6C63FF);
        border-radius: 0 0 4px 4px;
    }

    /* 顶部导航栏手机端隐藏导航链接，只留品牌名和用户积分 */
    .nav-links {
        display: none !important;
    }

    .navbar {
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        align-items: center !important;
        justify-content: space-between !important;
        padding: 0 1rem !important;
        height: 56px !important;
        min-height: 56px !important;
        overflow: hidden;
    }

    .nav-brand {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        min-width: 0;
        flex-shrink: 1;
    }

    .nav-brand h1 {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* 顶部右侧显示积分和用户名 */
    .navbar::after {
        display: none;
    }

    /* 顶部补充用户信息小栏 */
    .mobile-top-user {
        display: flex !important;
        align-items: center;
        justify-content: flex-end;
        gap: 0.4rem;
        min-width: 0;
        flex: 1;
        font-size: 0.8rem;
        color: var(--text-secondary, #888);
        overflow-x: auto;
        overflow-y: hidden;
        white-space: nowrap;
        scrollbar-width: none;
    }

    .mobile-top-user::-webkit-scrollbar {
        display: none;
    }

    .mobile-username {
        font-size: 0.8rem;
        color: var(--text-primary, #e0e0e0);
        font-weight: 600;
        max-width: 72px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .mobile-top-user .vip-expire-inline,
    .mobile-top-user .btn-username-toggle,
    .mobile-top-user .btn-logout {
        display: none !important;
    }

    .mobile-top-user .user-name,
    .mobile-top-user .vip-badge,
    .mobile-top-user .normal-user-badge {
        display: inline-flex !important;
        align-items: center;
        flex-shrink: 0;
    }

    .mobile-top-user .user-name {
        max-width: 84px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        color: var(--text-primary, #e0e0e0);
        font-size: 0.78rem;
        font-weight: 600;
    }

    .mobile-top-user .user-credits {
        font-size: 0.82rem;
        color: var(--primary, #6C63FF);
        font-weight: 600;
        flex-shrink: 0;
    }

    .mobile-top-user .btn-recharge,
    .mobile-top-user .btn-login {
        padding: 0.28rem 0.68rem !important;
        font-size: 0.78rem !important;
        flex-shrink: 0;
    }

    .mobile-top-user .btn-recharge {
        display: none !important;
    }

    /* 页面内容给固定头部和底部导航让位 */
    body {
        padding-bottom: 60px;
    }

    .main-content {
        margin-top: 56px !important;
        min-height: calc(100vh - 56px) !important;
        min-height: calc(100dvh - 56px) !important;
        padding: 0 !important;
        overflow: hidden !important;
    }

    /* 手机端模型下拉选择器 */
    .mobile-model-selector {
        display: block !important;
        padding: 0.5rem 0.75rem 0;
    }

    .mobile-model-selector select {
        width: 100%;
        padding: 0.6rem 1rem;
        background: var(--bg-main, #0f0f23);
        color: var(--text-primary, #e0e0e0);
        border: 1px solid var(--border, rgba(255,255,255,0.1));
        border-radius: 8px;
        font-size: 0.9rem;
        appearance: none;
        -webkit-appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 0.75rem center;
        cursor: pointer;
        outline: none;
    }

    .mobile-model-selector select:focus {
        border-color: var(--primary, #6C63FF);
    }

    .mobile-model-selector select optgroup {
        background: var(--bg-card, #1a1a2e);
        color: var(--text-secondary, #888);
        font-size: 0.8rem;
    }

    .mobile-model-selector select option {
        background: var(--bg-card, #1a1a2e);
        color: var(--text-primary, #e0e0e0);
        padding: 0.5rem;
    }

    /* chat页面底部输入框要在底部导航栏上方 */
    .chat-container {
        position: fixed !important;
        top: 56px !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 60px !important;
        height: auto !important;
        margin: 0 !important;
        display: flex !important;
        flex-direction: column !important;
        overflow: hidden !important;
    }

    .chat-messages {
        flex: 1 1 auto !important;
        min-height: 0 !important;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch !important;
        padding: 0.75rem 1rem calc(7.8rem + env(safe-area-inset-bottom, 0px)) !important;
    }

    .chat-input-container {
        flex-shrink: 0 !important;
        padding: 0.45rem 0.75rem calc(env(safe-area-inset-bottom, 0px) + 0.35rem) !important;
        background: var(--bg-card, #1a1a2e) !important;
        border-top: 1px solid var(--border, rgba(255,255,255,0.08)) !important;
        position: relative !important;
        z-index: 3 !important;
    }

    .chat-input-wrapper {
        bottom: auto !important;
    }
}