/*
 * content.css - Extracted from styles.css during the layered stylesheet split.
 * Ownership: Timeline posts, markdown rendering, adaptive cards, and content presentation.
 * Keep selector names/order stable in this first move-only tranche.
 */

/* Timeline - uses column-reverse for natural scroll anchoring when prepending */
.timeline {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    display: flex;
    flex-direction: column;
}

.timeline.reverse {
    flex-direction: column-reverse;
}

.timeline.normal {
    flex-direction: column;
}

/* Wrapper to hold posts in correct order inside column-reverse container */
.timeline-content {
    display: flex;
    flex-direction: column;
}

.timeline-sentinel {
    width: 100%;
    height: 1px;
    pointer-events: none;
}

.load-more-btn {
    background: none;
    border: none;
    color: var(--accent-color);
    padding: var(--spacing-md);
    cursor: pointer;
    font-size: var(--font-size-sm);
    text-align: center;
    width: 100%;
    transition: background-color var(--ui-transition-fast), color var(--ui-transition-fast);
}

.load-more-btn:hover {
    background-color: var(--bg-hover);
}

/* Post */
.post {
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
    position: relative;
    border-radius: var(--chat-surface-radius);
    animation: post-entry-fade 0.24s ease-out backwards;
    transition: background-color var(--ui-transition-fast), opacity 0.18s ease, transform 0.18s ease;
}

.post.removing {
    opacity: 0;
    transform: translateY(-6px) scale(0.98);
    pointer-events: none;
}

.post.post-highlight,
.post.search-highlight {
    border-radius: var(--radius-md);
    background-clip: padding-box;
    animation: row-highlight-fade 2s ease-out;
}

@keyframes row-highlight-fade {
    0% {
        box-shadow: inset 0 0 0 9999px var(--accent-color-alpha, rgba(100, 149, 237, 0.25));
    }
    100% {
        box-shadow: inset 0 0 0 9999px rgba(100, 149, 237, 0);
    }
}

@keyframes post-entry-fade {
    from {
        opacity: 0;
        box-shadow: inset 0 0 0 9999px color-mix(in srgb, var(--bg-hover) 88%, transparent);
    }
    to {
        opacity: 1;
        box-shadow: inset 0 0 0 9999px rgba(0, 0, 0, 0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .post {
        animation: none;
    }
}

.post:hover {
    background-color: var(--bg-hover);
}

.post.thread-reply {
    margin-left: 2.5rem;
    padding-left: calc(var(--spacing-md) - 2px);
    position: relative;
}

.post.thread-reply::before,
.post.thread-reply::after {
    content: '';
    position: absolute;
    left: 0;
    width: 2px;
    background: var(--border-color);
    opacity: 0;
}

.post.thread-reply::before {
    top: 0;
    bottom: 50%;
}

.post.thread-reply::after {
    top: 50%;
    bottom: 0;
}

.post.thread-reply.thread-prev::before,
.post.thread-reply.thread-next::after {
    opacity: 1;
}

.post.thread-reply .post-avatar {
    width: 28px;
    height: 28px;
    min-width: 28px;
    min-height: 28px;
    flex: 0 0 28px;
    font-size: 0.65rem;
}

.post-avatar {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-md);
    background-color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: var(--font-size-sm);
    flex: 0 0 auto;
}

.post-avatar.has-image {
    padding: 0;
    background-color: transparent;
}

.post-avatar.has-image img {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-md);
    object-fit: cover;
    display: block;
}

.post-avatar.agent-avatar {
    background-color: var(--accent-color);
}

.post-body {
    flex: 1;
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
    position: relative;
}

.post-actions {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    gap: 6px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

.post-action-btn {
    border: 1px solid transparent;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 13px;
    line-height: 1;
    transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
    pointer-events: auto;
}

.post-action-btn svg {
    width: 12px;
    height: 12px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.post:hover .post-actions,
.post:focus-within .post-actions {
    opacity: 1;
    pointer-events: auto;
}

.post-action-btn:hover,
.post-action-btn:focus-visible {
    border-color: var(--border-color);
    background-color: var(--bg-hover);
    outline: none;
}

.post-delete-btn:hover,
.post-delete-btn:focus-visible {
    color: var(--danger-color);
}

.post-copy-btn.is-success {
    color: var(--success-color);
    border-color: color-mix(in srgb, var(--success-color) 45%, var(--border-color));
}

.post-copy-btn.is-error {
    color: var(--danger-color);
    border-color: color-mix(in srgb, var(--danger-color) 45%, var(--border-color));
}

.post-copy-btn:disabled {
    opacity: 0.45;
    cursor: default;
}

.post-meta {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
}

.post-author {
    font-weight: 700;
}

.post-chat-agent-tag {
    display: inline-flex;
    align-items: center;
    padding: 1px 6px;
    border-radius: 999px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    line-height: 1.4;
    color: var(--accent-color);
    background: var(--accent-soft);
    border: 1px solid color-mix(in srgb, var(--accent-color) 32%, transparent);
}

.post-time {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-decoration: none;
}

.post-time:hover {
    text-decoration: underline;
}

.post-msg-pill-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.post-msg-pill-link:hover {
    text-decoration: none;
}

.post-msg-pill-link .post-file-pill {
    cursor: pointer;
}

.post-file-refs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
}

.attachment-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    max-width: 100%;
}

.attachment-pill-main {
    color: inherit;
    text-decoration: none;
    max-width: 100%;
}

.attachment-pill-preview {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    flex-shrink: 0;
}

.post-file-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 2px 8px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    max-width: 100%;
}

.post-file-pill svg {
    display: block;
}

.post-file-name {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@keyframes searchHighlightFade {
    0% { background-color: var(--search-highlight-color); }
    100% { background-color: transparent; }
}

.search-highlight-term {
    background-color: var(--search-highlight-color);
    color: inherit;
    padding: 0 2px;
    border-radius: 2px;
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
}

.post-content {
    margin-top: var(--spacing-xs);
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-word;
    font-size: var(--chat-content-font-size);
    line-height: 1.3;
    max-width: 100%;
}

.post-content.truncated,
.post-content.preview {
    background: var(--bg-secondary);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm);
    transition: background-color var(--ui-transition-fast), border-color var(--ui-transition-fast), color var(--ui-transition-fast);
}

.post-content.truncated .truncated-title,
.post-content.preview .truncated-title {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.post-content p {
    margin: 0 0 0.5em 0;
}

.post-content p:last-child {
    margin-bottom: 0;
}

.post-content h1, .post-content h2, .post-content h3,
.post-content h4, .post-content h5, .post-content h6 {
    margin: 0.5em 0 0.25em 0;
    font-weight: 600;
}

.post-content h1 { font-size: 1.4em; }
.post-content h2 { font-size: 1.25em; }
.post-content h3 { font-size: 1.1em; }

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

.post-content li {
    margin: 0.25em 0;
}

.post-content code {
    background-color: var(--bg-secondary);
    padding: 0.15em 0.4em;
    border-radius: var(--radius-sm);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: 0.9em;
}

.post-code-block {
    position: relative;
    margin: 0.5em 0 1em 0;
    max-width: 100%;
}

.post-content pre {
    background-color: var(--bg-secondary);
    border: 1px solid color-mix(in srgb, var(--border-color) 85%, transparent);
    padding: var(--spacing-md);
    padding-right: calc(var(--spacing-md) + 36px);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 0;
    max-width: 100%;
}

.post-content pre code {
    background: none;
    color: var(--text-primary);
    padding: 0;
    display: block;
    font-size: 0.9em;
    line-height: 1.35;
    tab-size: 4;
}

.post-content pre code.hljs {
    color: var(--text-primary);
}

.post-content pre code.hljs .tok-comment,
.post-content pre code.hljs .tok-meta {
    font-style: italic;
}

.post-code-copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 26px;
    height: 26px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: color-mix(in srgb, var(--bg-primary) 88%, transparent);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    pointer-events: auto;
    transition: color var(--ui-transition-fast), border-color var(--ui-transition-fast), background-color var(--ui-transition-fast), transform var(--ui-transition-fast);
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
}

.post-code-copy-btn svg {
    width: 14px;
    height: 14px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.post-code-copy-btn:hover,
.post-code-copy-btn:focus-visible {
    color: var(--text-primary);
    border-color: var(--accent-color);
    outline: none;
}

.post-code-copy-btn.is-success {
    color: var(--success-color);
    border-color: var(--success-color);
}

.post-code-copy-btn.is-error {
    color: var(--danger-color);
    border-color: var(--danger-color);
}


.post-content blockquote {
    border-left: 3px solid var(--border-color);
    margin: 0.5em 0;
    padding-left: var(--spacing-md);
    color: var(--text-secondary);
}

.post-content a {
    color: var(--accent-color);
    text-decoration: none;
}

.post-content a:hover {
    text-decoration: underline;
}

.post-content li input[type="checkbox"] {
    margin-right: 6px;
}

.post-content li:has(> input[type="checkbox"]) {
    list-style: none;
    margin-left: -1.5em;
}

.post-content li input[type="checkbox"] ~ *,
.post-content li input[type="checkbox"] ~ * *,
.post-content li input[type="checkbox"] + * {
    text-decoration: none !important;
}

.post-content li input[type="checkbox"]:checked ~ *,
.post-content li input[type="checkbox"]:checked + * {
    opacity: 0.65;
}
.post-content table {
    display: block;
    border-collapse: collapse;
    margin: 0.5em 0;
    width: max-content;
    min-width: 100%;
    max-width: 100%;
    overflow-x: auto;
    font-size: 0.9em;
    table-layout: auto;
}

.post-content th,
.post-content td {
    border: 1px solid var(--border-color);
    padding: 0.4em 0.6em;
    text-align: left;
    white-space: normal;
    overflow-wrap: break-word;
    word-break: normal;
    hyphens: auto;
}

.post-content th:first-child,
.post-content td:first-child {
    width: auto;
}

.post-content th {
    background-color: var(--bg-secondary);
    font-weight: 600;
}

.post-content tr:nth-child(even) {
    background-color: var(--bg-secondary);
}

/* Resource link blocks */
.resource-links {
    margin-top: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.resource-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    color: var(--text-primary);
}

.resource-link:hover {
    background-color: var(--bg-hover);
}

.resource-link-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.resource-link-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.resource-link-icon-inline {
    font-size: 14px;
}

.resource-link-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: 4px;
}

.resource-link-meta {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    display: flex;
    gap: var(--spacing-sm);
}

.resource-link-icon {
    color: var(--text-secondary);
    margin-left: var(--spacing-sm);
}

/* Embedded resources */
.resource-embeds {
    margin-top: var(--spacing-sm);
}

.resource-embed {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
}

.resource-embed-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    padding: 0;
}

.resource-embed-content {
    margin-top: var(--spacing-sm);
    white-space: pre-wrap;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.resource-embed-blob {
    margin-top: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.resource-embed-blob-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.resource-embed-blob-meta {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.resource-embed-blob-btn {
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    cursor: pointer;
    font-size: var(--font-size-sm);
}

.resource-embed-blob-btn:hover {
    background-color: var(--bg-hover);
}

/* Content annotations */
.content-annotations {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
}

.content-annotation {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
}

/* Mermaid diagrams */
.mermaid-container {
    margin: var(--spacing-md) 0;
    overflow-x: auto;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
}

.mermaid-container svg {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Smooth arrow corners for Mermaid flowchart/connectors */
.mermaid-container .edge {
    stroke-linejoin: round;
    stroke-linecap: round;
}

.mermaid-loading {
    color: var(--text-secondary);
    font-style: italic;
    padding: var(--spacing-md);
}

.mermaid-error {
    color: var(--error-color, #e53935);
    background-color: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    white-space: pre-wrap;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    cursor: zoom-in;
}

/* Adaptive Cards */
.post-adaptive-cards {
    margin-top: 8px;
}

.adaptive-card-container {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0;
    background: var(--bg-secondary);
    color: var(--text-primary);
    margin-bottom: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.adaptive-card-container,
.adaptive-card-container * {
    box-sizing: border-box;
}

.adaptive-card-container > .ac-adaptiveCard {
    padding: 12px;
    border-radius: inherit;
    background: transparent !important;
    color: var(--text-primary);
}

.adaptive-card-container .ac-textBlock,
.adaptive-card-container p,
.adaptive-card-container span,
.adaptive-card-container div,
.adaptive-card-container label,
.adaptive-card-container td,
.adaptive-card-container th {
    color: var(--text-primary);
}

.adaptive-card-container .ac-textBlock {
    line-height: 1.45;
}

.adaptive-card-container .ac-textBlock[role="heading"],
.adaptive-card-container .ac-textBlock[aria-level="2"] {
    letter-spacing: -0.01em;
}

.adaptive-card-container a {
    color: var(--accent-color) !important;
}

.adaptive-card-container .ac-horizontal-separator {
    border-color: var(--border-color) !important;
    opacity: 1;
}

.adaptive-card-container .ac-richTextBlock,
.adaptive-card-container .ac-input-label,
.adaptive-card-container .ac-input-label * {
    color: var(--text-primary) !important;
}

.adaptive-card-container input[type="text"],
.adaptive-card-container input[type="email"],
.adaptive-card-container input[type="tel"],
.adaptive-card-container input[type="url"],
.adaptive-card-container input[type="number"],
.adaptive-card-container input[type="date"],
.adaptive-card-container input[type="time"],
.adaptive-card-container textarea,
.adaptive-card-container select {
    width: 100%;
    min-height: 34px;
    background: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-md) !important;
    padding: 8px 10px !important;
    box-shadow: none !important;
}

.adaptive-card-container input[type="text"]:focus-visible,
.adaptive-card-container input[type="email"]:focus-visible,
.adaptive-card-container input[type="tel"]:focus-visible,
.adaptive-card-container input[type="url"]:focus-visible,
.adaptive-card-container input[type="number"]:focus-visible,
.adaptive-card-container input[type="date"]:focus-visible,
.adaptive-card-container input[type="time"]:focus-visible,
.adaptive-card-container textarea:focus-visible,
.adaptive-card-container select:focus-visible {
    outline: none;
    border-color: var(--accent-color) !important;
    box-shadow: 0 0 0 2px var(--accent-soft, rgba(29, 155, 240, 0.12)) !important;
}

.adaptive-card-container input[type="radio"],
.adaptive-card-container input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: var(--accent-color);
    flex: 0 0 auto;
}

.adaptive-card-container label {
    color: var(--text-primary) !important;
}

.adaptive-card-container .ac-choiceSetInput-expanded,
.adaptive-card-container .ac-input-container {
    gap: 8px;
}

.adaptive-card-container .ac-pushButton,
.adaptive-card-container button.ac-pushButton,
.adaptive-card-container [role="button"].ac-pushButton {
    appearance: none;
    background: var(--accent-color) !important;
    color: var(--adaptive-card-button-text-color, var(--accent-contrast-text)) !important;
    border: 1px solid var(--accent-color) !important;
    border-radius: var(--radius-md) !important;
    min-height: 32px;
    padding: 7px 14px !important;
    cursor: pointer !important;
    font-size: var(--font-size-sm) !important;
    font-weight: 600 !important;
    line-height: 1.2 !important;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--ui-transition-fast), border-color var(--ui-transition-fast), box-shadow var(--ui-transition-fast), transform var(--ui-transition-fast);
}

.adaptive-card-container .ac-pushButton *,
.adaptive-card-container button.ac-pushButton *,
.adaptive-card-container [role="button"].ac-pushButton * {
    color: inherit !important;
}

.adaptive-card-container .ac-pushButton:hover,
.adaptive-card-container button.ac-pushButton:hover,
.adaptive-card-container [role="button"].ac-pushButton:hover {
    background: var(--accent-hover) !important;
    border-color: var(--accent-hover) !important;
}

.adaptive-card-container .ac-pushButton:active,
.adaptive-card-container button.ac-pushButton:active,
.adaptive-card-container [role="button"].ac-pushButton:active {
    transform: translateY(1px);
    box-shadow: none;
}

.adaptive-card-container .ac-pushButton:focus-visible,
.adaptive-card-container button.ac-pushButton:focus-visible,
.adaptive-card-container [role="button"].ac-pushButton:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px var(--bg-primary), 0 0 0 4px var(--accent-color);
}

.adaptive-card-container .ac-pushButton.style-default[role="link"] {
    background: var(--bg-primary) !important;
    color: var(--accent-color) !important;
    border-color: var(--border-color) !important;
    box-shadow: none;
}

.adaptive-card-container .ac-pushButton.style-default[role="link"]:hover {
    background: var(--bg-hover) !important;
    border-color: var(--accent-color) !important;
}

.adaptive-card-container .ac-pushButton:disabled,
.adaptive-card-container .ac-pushButton[aria-disabled="true"] {
    opacity: 0.5;
    cursor: not-allowed !important;
    transform: none;
    box-shadow: none;
}

.adaptive-card-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    background: color-mix(in srgb, var(--bg-primary) 78%, var(--bg-secondary));
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.3;
}

.adaptive-card-status-label {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--bg-hover);
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: 0.01em;
}

.adaptive-card-status-detail {
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.adaptive-card-status-completed {
    background: color-mix(in srgb, var(--success-color) 6%, color-mix(in srgb, var(--bg-primary) 78%, var(--bg-secondary)));
}

.adaptive-card-status-completed .adaptive-card-status-label {
    background: color-mix(in srgb, var(--success-color) 14%, var(--bg-hover));
    color: var(--text-primary);
}

.adaptive-card-status-cancelled {
    background: color-mix(in srgb, var(--text-secondary) 6%, color-mix(in srgb, var(--bg-primary) 78%, var(--bg-secondary)));
}

.adaptive-card-status-cancelled .adaptive-card-status-label {
    background: color-mix(in srgb, var(--text-secondary) 12%, var(--bg-hover));
    color: var(--text-primary);
}

.adaptive-card-status-failed {
    background: color-mix(in srgb, var(--danger-color) 6%, color-mix(in srgb, var(--bg-primary) 78%, var(--bg-secondary)));
}

.adaptive-card-status-failed .adaptive-card-status-label {
    background: color-mix(in srgb, var(--danger-color) 14%, var(--bg-hover));
    color: var(--text-primary);
}

.adaptive-card-readonly input,
.adaptive-card-readonly textarea,
.adaptive-card-readonly select {
    opacity: 0.92;
    cursor: default !important;
}

.adaptive-card-notice {
    margin: 0 12px 12px;
    padding: 8px 10px;
    border-radius: var(--radius-md);
    font-size: 12px;
    line-height: 1.35;
}

.adaptive-card-notice-error {
    background: color-mix(in srgb, var(--danger-color) 12%, var(--bg-primary));
    border: 1px solid color-mix(in srgb, var(--danger-color) 30%, var(--border-color));
    color: var(--text-primary);
}

.adaptive-card-busy {
    opacity: 0.85;
    pointer-events: none;
}

.adaptive-card-finished {
    opacity: 0.82;
}

.adaptive-card-finished .ac-pushButton,
.adaptive-card-finished button,
.adaptive-card-finished [role="button"] {
    display: none !important;
}

.post-adaptive-card-submissions {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.adaptive-card-submission-receipt {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--bg-secondary) 92%, transparent);
    color: var(--text-primary);
    padding: 10px 12px;
    box-shadow: var(--shadow-sm);
}

.adaptive-card-submission-header {
    display: flex;
    align-items: center;
    gap: 8px;
}

.adaptive-card-submission-icon {
    width: 18px;
    height: 18px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--success-color) 18%, transparent);
    color: var(--success-color);
    font-size: 12px;
    font-weight: 700;
    flex: 0 0 auto;
}

.adaptive-card-submission-title-wrap {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.adaptive-card-submission-title {
    font-size: 11px;
    color: var(--text-secondary);
}

.adaptive-card-submission-title-action {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.adaptive-card-submission-summary {
    margin-top: 6px;
    font-size: 13px;
    line-height: 1.4;
    color: var(--text-primary);
}

.adaptive-card-submission-fields {
    margin-top: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.adaptive-card-submission-field {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    border: 1px solid color-mix(in srgb, var(--border-color) 70%, transparent);
    border-radius: 999px;
    padding: 3px 8px;
    font-size: 11px;
    line-height: 1.2;
    color: var(--text-primary);
    max-width: 100%;
    background: var(--bg-secondary);
}

.adaptive-card-submission-field-key {
    color: var(--text-secondary);
}

.adaptive-card-submission-field-value {
    color: var(--text-primary);
    font-weight: 600;
    white-space: nowrap;
}

.adaptive-card-submission-field-sep {
    opacity: 0.8;
}

.adaptive-card-submission-field-more {
    color: var(--text-secondary);
    border-style: dashed;
    font-style: italic;
    font-weight: 500;
}

.adaptive-card-submission-toggle {
    margin-top: 8px;
    border: none;
    background: transparent;
    color: var(--accent-color);
    padding: 0;
    font-size: 12px;
    line-height: 1.3;
    font-weight: 600;
    cursor: pointer;
}

.adaptive-card-submission-toggle:hover,
.adaptive-card-submission-toggle:focus-visible {
    text-decoration: underline;
    outline: none;
}

.adaptive-card-submission-fields-extra {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dashed color-mix(in srgb, var(--border-color) 70%, transparent);
}

.adaptive-card-submission-meta {
    margin-top: 6px;
    font-size: 11px;
    color: var(--text-secondary);
}

/* Hashtags */
.hashtag {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

.hashtag:hover {
    text-decoration: underline;
}

/* Back button */
.back-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-sm);
}

.back-btn:hover {
    background-color: var(--bg-hover);
}

.back-btn svg {
    display: block;
}

/* Media preview */
.media-preview {
    margin-top: var(--spacing-sm);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.media-preview img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    cursor: zoom-in;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.media-preview img:active {
    transform: scale(0.95);
}

@media (hover: hover) {
    .media-preview img:hover {
        transform: scale(1.02);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }
}

/* File attachments */
.file-attachments {
    margin-top: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.file-attachment {
    display: flex;
    align-items: stretch;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: inherit;
    transition: background-color 0.15s ease, transform 0.15s ease;
}

.file-attachment-main {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
    min-width: 0;
    color: inherit;
    text-decoration: none;
}

.file-attachment:active {
    transform: scale(0.98);
}

@media (hover: hover) {
    .file-attachment:hover {
        background-color: var(--bg-hover);
    }
}

.file-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    color: var(--text-secondary);
}

.file-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.file-name {
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-size {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.file-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.file-attachment-preview {
    align-self: center;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    font: inherit;
    padding: 6px 10px;
    white-space: nowrap;
}

.download-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--text-secondary);
}

/* Link previews */
.link-previews {
    margin-top: var(--spacing-sm);
    display: grid;
    gap: var(--spacing-sm);
    grid-template-columns: 1fr;
    align-items: stretch;
}

@media (min-width: 720px) {
    .link-previews {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1100px) {
    .link-previews {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.link-preview {
    display: block;
    position: relative;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    background-size: cover;
    background-position: center;
    min-height: 100px;
    max-height: 56.25vw; /* 16:9 max aspect ratio */
    transition: transform 0.2s, box-shadow 0.2s;
}

@media (min-width: 600px) {
    .link-preview {
        max-height: 337px; /* 600px * 9/16 */
    }
}

.link-preview:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.link-preview.has-image {
    min-height: 160px;
}

.link-preview-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.5) 40%, rgba(0, 0, 0, 0.25) 50%, rgba(0, 0, 0, 0) 100%);
    color: #fff;
}

.link-preview.has-image .link-preview-overlay {
    padding-top: var(--spacing-xl);
}

.link-preview:not(.has-image) .link-preview-overlay {
    position: relative;
    background: transparent;
    color: var(--text-primary);
}

.link-preview-site {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    text-transform: lowercase;
}

.link-preview:not(.has-image) .link-preview-site {
    color: var(--text-secondary);
}

.link-preview-title {
    font-weight: 600;
    margin-top: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.3;
}

.link-preview-description {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    margin-top: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.link-preview:not(.has-image) .link-preview-description {
    color: var(--text-secondary);
}

/* Thread view */
.btw-panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 6px var(--spacing-sm) 0;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--bg-secondary) 88%, transparent);
    box-shadow: var(--shadow-sm);
}

.btw-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.btw-panel-title-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.btw-panel-title {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--accent-color);
}

.btw-panel-status {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    color: var(--text-secondary);
    background: var(--bg-hover);
}

.btw-panel-status-running {
    color: var(--accent-color);
}

.btw-panel-status-error {
    color: var(--danger-color);
}

.btw-panel-close {
    flex: 0 0 auto;
    padding: 2px;
    border-radius: 999px;
    color: var(--accent-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: color 0.15s ease, background-color 0.15s ease;
    background: none;
    border: none;
    margin-left: auto;
}

.btw-panel-close:hover,
.btw-panel-close:focus-visible {
    color: var(--accent-color);
    background: color-mix(in srgb, var(--accent-color) 10%, transparent);
    outline: none;
}

.btw-panel-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    flex-wrap: wrap;
}

.btw-panel-footer-left,
.btw-panel-footer-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btw-block {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.btw-question,
.btw-answer,
.btw-error,
.btw-thinking {
    font-size: 13px;
    line-height: 1.45;
    color: var(--text-primary);
}

.btw-answer-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.btw-answer-body {
    overflow-wrap: anywhere;
}

.btw-answer-body > :first-child {
    margin-top: 0;
}

.btw-answer-body > :last-child {
    margin-bottom: 0;
}

.btw-answer-body ul,
.btw-answer-body ol {
    margin: 0.35em 0;
    padding-left: 1.25em;
}

.btw-answer-body li {
    margin: 0.15em 0;
}

.btw-error {
    color: var(--danger-color);
}

.btw-thinking summary {
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 12px;
}

.btw-thinking-body {
    margin-top: 6px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 12px;
    overflow-wrap: anywhere;
}

.btw-thinking-body > :first-child {
    margin-top: 0;
}

.btw-thinking-body > :last-child {
    margin-bottom: 0;
}

.btw-btn {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.btw-btn:hover:not(:disabled),
.btw-btn:focus-visible:not(:disabled) {
    background: var(--bg-hover);
    outline: none;
}

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

.btw-btn-primary {
    background: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.btw-btn-primary:hover:not(:disabled),
.btw-btn-primary:focus-visible:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--accent-color);
}