.return-user-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 10005;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.return-user-modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.return-user-card {
    position: relative;
    width: 90%;
    max-width: 480px;
    background: linear-gradient(145deg, #181818 0%, #202020 100%);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 20px;
    padding: 40px 30px 30px 30px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 15px rgba(255, 215, 0, 0.1);
    text-align: center;
    color: #fff;
    transform: scale(0.95) translateY(20px);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.return-user-modal-overlay.show .return-user-card {
    transform: scale(1) translateY(0);
}

.return-close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.05);
    border: none;
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.6);
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.return-close-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    transform: rotate(90deg);
}

.return-title {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 12px;
    background: linear-gradient(90deg, #fff 10%, #FFD700 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.5px;
}

.return-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 30px;
    line-height: 1.6;
}

.return-options-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 30px;
}

.return-option-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 18px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.2s ease;
}

.return-option-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(4px);
}

.return-option-item.selected {
    background: rgba(255, 215, 0, 0.08);
    border-color: #FFD700;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.05);
}

.option-name {
    font-size: 15px;
    font-weight: 500;
    color: #eee;
    text-align: left;
}

.option-check {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    position: relative;
    transition: all 0.2s;
    flex-shrink: 0;
}

.return-option-item.selected .option-check {
    border-color: #FFD700;
    background-color: transparent;
}

.return-option-item.selected .option-check::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background-color: #FFD700;
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(255, 215, 0, 0.6);
}

.return-claim-btn {
    width: 100%;
    padding: 14px;
    border-radius: 50px;
    border: none;
    background: linear-gradient(90deg, #FFD700, #FFA500);
    color: #000;
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.2);
    transition: all 0.2s;
}

.return-claim-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
    filter: brightness(1.1);
}

.return-footer-text {
    margin-top: 20px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.3);
}

.modal-overlay,
.return-user-modal-overlay,
.tour-modal-overlay {
    z-index: 10005 !important;
}

.tour-modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: flex; justify-content: center; align-items: center;
    opacity: 0; visibility: hidden;
    transition: all 0.4s ease;
    z-index: 10005;
}
.tour-modal-overlay.show { opacity: 1; visibility: visible; }

.tour-card {
    width: 550px;
    height: 600px;
    background: linear-gradient(145deg, #181818 0%, #252526 100%);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 24px;
    padding: 0;
    box-shadow: 0 30px 80px rgba(0,0,0,0.8);
    color: #fff;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.tour-modal-overlay.show .tour-card { transform: scale(1); }

.tour-header {
    padding: 30px 35px 10px 35px;
    flex-shrink: 0;
    text-align: left;
}

.tour-step-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 0;
    color: #fff;
    background: linear-gradient(90deg, #fff, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tour-step-desc {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.tour-scroll-content {
    padding: 10px 35px 20px 35px;
    flex-grow: 1;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    scrollbar-width: thin;
    scrollbar-color: #444 transparent;
    mask-image: linear-gradient(to bottom, transparent 0%, black 15px);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 15px);
}

.tour-scroll-content::-webkit-scrollbar { width: 6px; }
.tour-scroll-content::-webkit-scrollbar-track { background: transparent; }
.tour-scroll-content::-webkit-scrollbar-thumb { background-color: #444; border-radius: 3px; }

.tour-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    cursor: zoom-in;
    transition: transform 0.2s, box-shadow 0.2s;
}
.tour-img:hover {
    box-shadow: 0 8px 25px rgba(0,0,0,0.5);
    border-color: rgba(59, 130, 246, 0.5);
}

.tour-footer {
    padding: 20px 35px 30px 35px;
    background: rgba(30, 30, 30, 0.98);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex; justify-content: space-between; align-items: center;
    flex-shrink: 0;
    z-index: 3;
}

.tour-dots { display: flex; gap: 8px; }
.tour-dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255, 255, 255, 0.2); transition: all 0.3s; }
.tour-dot.active { background: #3b82f6; width: 24px; border-radius: 4px; }

.tour-btn { padding: 10px 24px; border-radius: 50px; font-size: 14px; cursor: pointer; border: none; transition: all 0.2s; font-family: inherit; }
.tour-btn-prev { background: transparent; color: rgba(255, 255, 255, 0.5); padding: 10px 15px; }
.tour-btn-prev:hover { color: #fff; }
.tour-btn-next { background: #3b82f6; color: #fff; font-weight: 600; box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4); }
.tour-btn-next:hover { background: #2563eb; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6); }

.tour-fullscreen-zoom {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 20000;
    display: flex; justify-content: center; align-items: center;
    opacity: 0; visibility: hidden;
    transition: all 0.3s ease;
    cursor: zoom-out;
}
.tour-fullscreen-zoom.visible { opacity: 1; visibility: visible; }

.tour-zoom-img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 0 50px rgba(0,0,0,0.8);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}
.tour-fullscreen-zoom.visible .tour-zoom-img { transform: scale(1); }

.download-code-btn {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    color: #b0b0b0;
    font-size: 12px;
    font-weight: 500;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.2s ease;
    cursor: pointer;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.download-code-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08) !important;
}

[data-theme="light"] .download-code-btn {
    color: #656d76;
}
[data-theme="light"] .download-code-btn:hover {
    color: #24292e;
    background: rgba(0, 0, 0, 0.05) !important;
}
.tour-img.qrcode-style {
    max-width: 220px !important;
    max-height: 220px !important;
    width: auto;
    border: 8px solid #fff;
    border-radius: 4px;
    background-color: #fff;
    margin-top: 20px;
}

.tour-content.no-image {
    justify-content: center;
    padding-top: 0;
}

.tour-content.no-image .tour-text-wrapper {
    margin-bottom: 0;
    transform: translateY(-20px);
}

.tour-content.no-image .tour-step-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    white-space: pre-wrap;
    text-align: left;
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

:root {
    --code-panel-width: 800px;
}

.code-side-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--code-panel-width);
    height: 100vh;
    background: var(--chat-bg);
    border-left: 1px solid var(--toolbar-border);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 1050;
    display: flex;
    flex-direction: column;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.15);
}

.code-side-panel.open {
    transform: translateX(0);
}

.panel-resizer {
    position: absolute;
    left: -2px;
    top: 0;
    bottom: 0;
    width: 4px;
    cursor: ew-resize;
    z-index: 10;
    background: transparent !important;
}

body.is-resizing {
    cursor: ew-resize !important;
    user-select: none !important;
}
body.is-resizing .code-side-panel,
body.is-resizing .main-content,
body.is-resizing .input-box {
    transition: none !important;
}

.main-content, .input-box {
    transition: margin-right 0.3s ease, right 0.3s ease;
}
.main-content.right-open { margin-right: var(--code-panel-width); }
.input-box.right-open { right: var(--code-panel-width); }

.code-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: var(--chat-bg);
    border-bottom: 1px solid var(--toolbar-border);
    height: var(--toolbar-height);
    box-sizing: border-box;
}

.panel-header-left, .panel-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-badge {
    background: transparent;
    color: var(--summary-text);
    font-size: 13px;
    font-weight: 500;
    padding: 0;
    text-transform: uppercase;
}

.panel-filename-input {
    background: transparent;
    border: 1px dashed transparent;
    color: var(--text);
    font-family: 'Consolas', monospace;
    font-size: 13px;
    padding: 2px 5px;
    border-radius: 4px;
    transition: border-color 0.2s;
    width: 200px;
}

.panel-filename-input:focus, .panel-filename-input:hover {
    border-color: var(--toolbar-border);
    outline: none;
    background: rgba(255, 255, 255, 0.05);
}

.panel-action-btn {
    background: transparent;
    border: 1px solid var(--toolbar-border);
    color: var(--text);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s;
}

.panel-action-btn:hover {
    background: rgba(255, 255, 255, 0.05);
}

.panel-close-btn {
    background: transparent;
    border: none;
    color: var(--close-btn);
    font-size: 20px;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    margin-left: 5px;
}
.panel-close-btn:hover { color: var(--close-btn-hover); }

.code-panel-body {
    flex: 1;
    padding: 0;
    overflow: auto;
}

.code-panel-body::-webkit-scrollbar {
    width: 8px;
    height: 6px;
}
.code-panel-body::-webkit-scrollbar-track {
    background: transparent;
}
.code-panel-body::-webkit-scrollbar-thumb {
    background: #444;
    border-radius: 4px;
}
.code-panel-body::-webkit-scrollbar-thumb:hover {
    background: #666;
}

.code-side-panel .code-toolbar > .toolbar {
    display: none !important;
}
.code-side-panel .code-toolbar {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    margin: 0 !important;
    padding: 0 !important;
}

.code-side-panel pre[class*="language-"] {
    margin: 0 !important;
    padding: 15px 15px 15px 3.2em !important;
    border: none !important;
    background: transparent !important;
    border-radius: 0 !important;
    min-height: 100%;
}

.message.ai .content div.code-toolbar.collapsed {
    height: 38px;
    min-height: 38px;
    overflow: hidden;
    padding-bottom: 0 !important;
}

.message.ai .content div.code-toolbar.collapsed pre {
    display: none !important;
}
.message.ai .content div.code-toolbar {
    transition: height 0.3s ease;
}

.toggle-btn-item button::before,
.edit-btn-item button::before {
    display: none !important;
    content: none !important;
}

.code-side-panel pre {
    position: relative !important;
    margin: 0 !important;
    padding: 15px 15px 15px 3.8em !important;
    border: none !important;
    background: transparent !important;
    border-radius: 0 !important;
    min-height: 100%;
}

.code-side-panel .line-numbers-rows {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 3.2em !important;
    padding: 15px 0 !important;
    border-right: 1px solid var(--toolbar-border) !important;
    background: transparent !important;
    text-align: center !important;
}

.code-side-panel .line-numbers-rows > span:before {
    color: #6e7681;
}

#codeSidePanel pre.line-numbers {
    position: relative !important;
    margin: 0 !important;
    padding: 15px 15px 15px 3.8em !important;
    border: none !important;
    background: transparent !important;
    border-radius: 0 !important;
    min-height: 100%;
}

#codeSidePanel code[class*="language-"] {
    position: relative !important;
}

#codeSidePanel .line-numbers-rows {
    position: absolute !important;
    top: 0 !important;
    left: -3.8em !important;
    width: 3.2em !important;
    padding: 0 !important;
    border-right: 1px solid var(--toolbar-border) !important;
    background: transparent !important;
    text-align: center !important;
}

#codeSidePanel .line-numbers-rows > span:before {
    color: #6e7681 !important;
}

#panelHtmlIframe {
    width: 100%;
    height: 100%;
    border: none;
    background-color: #ffffff;
    display: none;
}

.code-panel-body.show-preview pre {
    display: none !important;
}

.code-panel-body.show-preview #panelHtmlIframe {
    display: block !important;
}

#panelPreviewBtn.active {
    background-color: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
    border-color: rgba(59, 130, 246, 0.4);
}

#codeSidePanel .code-action-group {
    margin-left: 0;
    margin-right: 10px;
    border-color: var(--toolbar-border);
}

[data-theme="light"] #codeSidePanel .code-action-main-btn,
[data-theme="light"] #codeSidePanel .code-action-dropdown-trigger {
    color: #24292e !important;
}
[data-theme="light"] #codeSidePanel .code-action-main-btn:hover,
[data-theme="light"] #codeSidePanel .code-action-dropdown-trigger:hover {
    background-color: rgba(0,0,0,0.05) !important;
}
#codeSidePanel .code-action-group {
    position: relative;
    display: inline-flex !important;
    flex-direction: row !important;
    align-items: center !important;
    background-color: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid var(--toolbar-border) !important;
    border-radius: 6px !important;
    margin-right: 8px !important;
    height: 28px !important;
    padding: 0 !important;
}

#codeSidePanel .code-action-group:hover {
    background-color: rgba(255, 255, 255, 0.1) !important;
}

#codeSidePanel .code-action-main-btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    color: var(--text) !important;
    font-size: 12px !important;
    padding: 0 10px !important;
    height: 100% !important;
    margin: 0 !important;
    cursor: pointer !important;
    gap: 4px !important;
}

#codeSidePanel .code-action-main-btn:hover {
    color: #fff !important;
}

#codeSidePanel .code-action-main-btn svg {
    width: 14px !important;
    height: 14px !important;
    margin: 0 !important;
}

#codeSidePanel .code-action-divider {
    width: 1px !important;
    height: 14px !important;
    background-color: rgba(255, 255, 255, 0.2) !important;
    margin: 0 !important;
}

#codeSidePanel .code-action-dropdown-trigger {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    color: var(--text) !important;
    padding: 0 6px !important;
    height: 100% !important;
    margin: 0 !important;
    cursor: pointer !important;
}

#codeSidePanel .code-action-dropdown-trigger:hover {
    color: #fff !important;
}

#codeSidePanel .code-action-dropdown-menu {
    position: absolute !important;
    top: calc(100% + 4px) !important;
    right: 0 !important;
    background-color: #2d2d2d !important;
    border: 1px solid #444 !important;
    border-radius: 6px !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4) !important;
    padding: 4px 0 !important;
    min-width: 120px !important;
    z-index: 9999 !important;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-5px);
    transition: all 0.2s ease;
}

#codeSidePanel .code-action-group.open .code-action-dropdown-menu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

#codeSidePanel .code-action-menu-item {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    padding: 8px 12px !important;
    color: #e0e0e0 !important;
    font-size: 13px !important;
    cursor: pointer !important;
    background: transparent !important;
    border: none !important;
    width: 100% !important;
    text-align: left !important;
    margin: 0 !important;
    box-shadow: none !important;
}

#codeSidePanel .code-action-menu-item:hover {
    background-color: #3b82f6 !important;
    color: #fff !important;
}

[data-theme="light"] #codeSidePanel .code-action-group {
    background-color: rgba(0, 0, 0, 0.05) !important;
    border-color: #d0d7de !important;
}
[data-theme="light"] #codeSidePanel .code-action-group:hover {
    background-color: rgba(0, 0, 0, 0.08) !important;
}
[data-theme="light"] #codeSidePanel .code-action-main-btn,
[data-theme="light"] #codeSidePanel .code-action-dropdown-trigger {
    color: #24292f !important;
}
[data-theme="light"] #codeSidePanel .code-action-divider {
    background-color: #d0d7de !important;
}
[data-theme="light"] #codeSidePanel .code-action-dropdown-menu {
    background-color: #ffffff !important;
    border-color: #d0d7de !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
}
[data-theme="light"] #codeSidePanel .code-action-menu-item {
    color: #24292f !important;
}
[data-theme="light"] #codeSidePanel .code-action-menu-item:hover {
    background-color: #f3f4f6 !important;
    color: #24292f !important;
}

#codeSidePanel pre[class*="language-"] {
    padding-top: 15px !important; /* 恢复正常间距 */
    margin: 0 !important;
    overflow: visible !important; /* 关键：取消 pre 自身的滚动，交给父容器 */
    min-height: 100%;
    box-sizing: border-box;
}

/* 2. 统一右侧面板的滚动行为，解决双滚动条 */
.code-panel-body {
    flex: 1;
    overflow-y: auto !important; /* 只允许在这里产生垂直滚动 */
    overflow-x: auto !important; /* 允许横向滚动 */
    padding: 0;
    background: transparent;
}

/* 3. 修正行号的位置，防止因为 padding 改变而错位 */
#codeSidePanel .line-numbers-rows {
    padding-top: 15px !important; /* 与 pre 的 padding-top 保持一致 */
    top: 0 !important;
}

/* 4. 针对 PHP 的特殊处理（如果有自动添加标签逻辑，防止首行空行） */
#codeSidePanel code {
    display: block;
    white-space: pre !important;
}