/* 聊天容器整体布局，保证聊天区可见并支持上下滚动 */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.78);
    min-width: 0;
    height: var(--app-viewport, 100vh);
    overflow: hidden;
    position: relative;
    backdrop-filter: blur(6px);
}

.chat-container--monitor .virtual-monitor-surface {
    flex: 1;
}

/* 核心聊天区样式，确保对话内容在主面板中可见 */
.messages-area {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    padding-top: 30px;
    padding-bottom: calc(100px + var(--app-bottom-inset, 0px));
    min-height: 0;
    position: relative;
}

.messages-flow {
    width: min(960px, 100%);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

.chat-container .input-area {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 32px;
}

.messages-area::-webkit-scrollbar,
.sidebar::-webkit-scrollbar,
.conversation-list::-webkit-scrollbar {
    width: 8px;
}

.messages-area::-webkit-scrollbar-track,
.sidebar::-webkit-scrollbar-track,
.conversation-list::-webkit-scrollbar-track {
    background: transparent;
}

.messages-area::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb,
.conversation-list::-webkit-scrollbar-thumb {
    background: rgba(121, 109, 94, 0.4);
    border-radius: 8px;
}

.scroll-lock-toggle {
    position: absolute;
    right: 28px;
    bottom: 140px;
    z-index: 25;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.chat-container--immersive .messages-flow {
    width: min(900px, 100%);
}

.chat-container--immersive .scroll-lock-toggle {
    right: calc((100% - min(900px, 100%)) / 2 + 24px);
}

.chat-container--mobile {
    padding-top: 68px;
}

.scroll-lock-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--claude-border);
    background: rgba(255, 255, 255, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 6px 16px rgba(61, 57, 41, 0.08);
}

.scroll-lock-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 9px 20px rgba(61, 57, 41, 0.12);
}

.scroll-lock-toggle.locked .scroll-lock-btn {
    border-color: rgba(218, 119, 86, 0.32);
    box-shadow: 0 0 10px rgba(218, 119, 86, 0.28);
}

.scroll-lock-btn svg {
    width: 18px;
    height: 18px;
    stroke: var(--claude-text);
    stroke-width: 1.8;
    fill: none;
    transition: stroke 0.2s ease;
}

.scroll-lock-toggle.locked .scroll-lock-btn svg {
    stroke: var(--claude-accent);
}

.message-block {
    margin-bottom: 24px;
}

.user-message .message-header,
.assistant-message .message-header {
    font-size: 14px;
    font-weight: 600;
    color: var(--claude-text);
    margin-bottom: 10px;
    letter-spacing: 0.02em;
}

.user-message .message-text,
.assistant-message .message-text {
    padding: 16px 20px;
    border-radius: 18px;
    font-size: 15px;
    line-height: 1.6;
    box-shadow: 0 12px 28px rgba(61, 57, 41, 0.08);
    color: var(--claude-text);
    white-space: pre-wrap;
}

.user-message .message-text {
    background: rgba(255, 255, 255, 0.88);
}

.assistant-message .message-text {
    background: rgba(218, 119, 86, 0.12);
    border-left: 4px solid var(--claude-accent);
}

.assistant-generating-block {
    width: 100%;
}

.text-content.assistant-generating-placeholder {
    display: flex;
    width: 100%;
    align-items: center;
    gap: 0.08em;
    padding: 8px 0 16px;
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--claude-text);
    letter-spacing: 0.08em;
    background: transparent;
    border: none;
    box-shadow: none;
}

.assistant-generating-letter {
    display: inline-block;
    opacity: 0.35;
    transform: translateY(0);
    animation: assistant-generating-wave 1.6s ease-in-out infinite;
}

@keyframes assistant-generating-wave {
    0%,
    100% {
        opacity: 0.35;
        transform: translateY(0);
    }
    20% {
        opacity: 1;
        transform: translateY(-3px) scale(1.05);
    }
    40% {
        opacity: 0.65;
        transform: translateY(0);
    }
}

.thinking-content {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 13px;
    line-height: 1.6;
    color: var(--claude-text-secondary);
    scrollbar-width: none;
}

.thinking-content::-webkit-scrollbar {
    display: none;
}

.collapsible-block {
    background: rgba(255, 255, 255, 0.78);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    border: 1px solid var(--claude-border);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 12px 28px rgba(61, 57, 41, 0.08);
}

.collapsible-header {
    padding: 14px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    user-select: none;
    background: rgba(255, 255, 255, 0.72);
    transition: background-color 0.2s ease;
    position: relative;
}

.collapsible-header:hover {
    background: rgba(218, 119, 86, 0.07);
}

.arrow {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--claude-text-secondary);
}

.arrow::before {
    content: '›';
    font-size: 18px;
}

.collapsible-block.expanded .arrow {
    transform: rotate(90deg);
}

.captured-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--claude-text);
}

.collapsible-content {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition:
        max-height 0.26s cubic-bezier(0.4, 0, 0.2, 1),
        opacity 0.26s cubic-bezier(0.4, 0, 0.2, 1);
}

.collapsible-block.expanded .collapsible-content {
    max-height: 600px;
    overflow-y: auto;
    opacity: 1;
}

.content-inner {
    padding: 20px 20px 20px 56px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--claude-text-secondary);
    scrollbar-width: none;
}

.content-inner::-webkit-scrollbar {
    display: none;
}

.action-item {
    animation: slideInFade 0.6s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.action-item.streaming-content,
.action-item.immediate-show {
    animation: quickFadeIn 0.2s ease-out both;
}

.action-item.completed-tool {
    animation: slideInFade 0.4s cubic-bezier(0.4, 0, 0.2, 1) both;
    animation-delay: 100ms;
}

.action-item.thinking-finished {
    animation: none;
}

.stacked-blocks-wrapper {
    margin: 12px 0 8px;
}

.stacked-shell {
    position: relative;
    border: 1px solid var(--claude-border);
    border-radius: 16px;
    background: var(--claude-card);
    box-shadow: var(--claude-shadow);
    overflow: hidden;
    transition:
        height 280ms cubic-bezier(0.25, 0.9, 0.3, 1),
        padding-top 280ms cubic-bezier(0.25, 0.9, 0.3, 1);
    min-height: 0;
}

.stacked-inner {
    position: relative;
    width: 100%;
    transition: transform 280ms cubic-bezier(0.25, 0.9, 0.3, 1);
}

.stacked-viewport {
    overflow: hidden;
    position: relative;
    width: 100%;
}

.stacked-item {
    border-bottom: 1px solid var(--claude-border);
}

.stacked-item:last-child {
    border-bottom: none;
}

.stacked-block {
    margin: 0;
    border: none;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
}

.stacked-more-block {
    position: absolute;
    inset: 0 0 auto 0;
    background: var(--claude-card);
    border-bottom: 0 solid var(--claude-border);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 22px;
    height: 0;
    opacity: 0;
    overflow: hidden;
    cursor: pointer;
    z-index: 2;
    transition:
        height 280ms cubic-bezier(0.25, 0.9, 0.3, 1),
        padding 280ms cubic-bezier(0.25, 0.9, 0.3, 1),
        border-bottom-width 280ms cubic-bezier(0.25, 0.9, 0.3, 1),
        opacity 160ms ease;
}

.stacked-more-block.visible {
    opacity: 1;
    padding: 14px 22px;
    border-bottom-width: 1px;
}

.more-icon {
    width: 18px;
    height: 18px;
    display: inline-block;
    object-fit: contain;
}

.more-copy {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.more-title {
    font-weight: 700;
    color: var(--claude-text);
}

.more-desc {
    color: var(--claude-text-secondary);
    font-size: 12px;
}

.stacked-enter-from {
    opacity: 0;
    transform: translateY(14px);
}

.stacked-enter-active,
.stacked-appear-active {
    transition: all 220ms cubic-bezier(0.4, 0, 0.2, 1);
    transition-delay: 120ms;
}

.stacked-leave-active {
    position: absolute;
    width: 100%;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.stacked-leave-to {
    opacity: 0;
    transform: translateY(-12px);
}

.stacked-appear-from {
    opacity: 0;
    transform: translateY(14px);
}

.stacked-move {
    transition: transform 220ms cubic-bezier(0.4, 0, 0.2, 1);
}

.stacked-block .collapsible-content {
    transition:
        max-height 280ms cubic-bezier(0.25, 0.9, 0.3, 1),
        opacity 220ms ease;
}

.progress-indicator {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--claude-accent);
    animation: progress-bar 2s ease-in-out infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.collapsible-block.processing .progress-indicator {
    opacity: 1;
}

@keyframes progress-bar {
    0% {
        width: 0%;
        left: 0%;
    }
    50% {
        width: 40%;
        left: 30%;
    }
    100% {
        width: 0%;
        left: 100%;
    }
}

.status-text {
    font-size: 14px;
    color: var(--claude-text);
    font-weight: 500;
}

.collapsible-block.processing .status-text {
    color: var(--claude-text-secondary);
}

.tool-desc {
    color: var(--claude-text-secondary);
    font-size: 12px;
    margin-left: 8px;
}

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

@keyframes quickFadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.text-output {
    margin: 16px 0;
    color: var(--claude-text);
    font-size: 15px;
    line-height: 1.7;
}

.text-output .text-content {
    padding: 0 20px 0 15px;
}

.text-output .text-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    background: rgba(255, 255, 255, 0.92);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(61, 57, 41, 0.06);
}

.text-output .text-content thead {
    background: rgba(218, 119, 86, 0.1);
}

.text-output .text-content th,
.text-output .text-content td {
    border: 1px solid rgba(118, 103, 84, 0.18);
    padding: 10px 14px;
    text-align: left;
    vertical-align: middle;
    font-size: 14px;
}

.text-output .text-content th {
    font-weight: 600;
    color: var(--claude-text);
}

.system-action {
    margin: 12px 0;
    padding: 10px 14px;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(59, 130, 246, 0.08));
    border-left: 4px solid rgba(79, 70, 229, 0.6);
    color: var(--claude-text);
    font-size: 14px;
    line-height: 1.5;
}

.system-action-content {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.append-block,
.append-placeholder {
    margin: 12px 0;
    padding: 12px 16px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.82);
    border-left: 4px solid rgba(218, 119, 86, 0.32);
    box-shadow: inset 0 0 0 1px rgba(218, 119, 86, 0.05);
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--claude-text);
}

.append-block.append-error,
.append-placeholder.append-error {
    background: rgba(255, 244, 242, 0.85);
    border-left-color: rgba(216, 90, 66, 0.38);
}

.append-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.code-block-wrapper {
    border: 2px solid rgba(118, 103, 84, 0.25);
    border-radius: 12px;
    overflow: hidden;
    margin: 16px 0;
    background: rgba(255, 255, 255, 0.78);
    min-height: 80px;
}

.code-block-header {
    background: rgba(218, 119, 86, 0.08);
    padding: 10px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(118, 103, 84, 0.25);
}

.code-language {
    color: var(--claude-text-secondary);
    font-size: 13px;
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-weight: 500;
}

.copy-code-btn {
    width: 32px;
    height: 32px;
    border: none;
    padding: 0;
    border-radius: 50%;
    background-color: transparent;
    background-image: url('/static/icons/copy.svg');
    background-repeat: no-repeat;
    background-position: center;
    background-size: 20px;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.copy-code-btn:hover {
    opacity: 0.7;
}

.copy-code-btn.copied {
    opacity: 0.35;
}

.code-block-wrapper pre {
    background: #ffffff !important;
    padding: 16px !important;
    margin: 0 !important;
    border-radius: 0 !important;
    border: none !important;
}

.code-block-wrapper pre code {
    background: transparent !important;
    padding: 0 !important;
    color: #000000;
}

.streaming-text {
    display: block;
}

.cursor-blink {
    animation: blink 1s steps(1) infinite;
    color: var(--claude-accent);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}