/**
 * AI Editor - Chat Panel Styles
 * Messages, streaming, tool calls, action buttons, summary notifications
 */

/* ============================================
   CHAT PANEL (Right)
   ============================================ */

.chat-panel {
    width: var(--chat-width);
    min-width: 280px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.chat-header {
    padding: 0.35rem 0.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.chat-header-row {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: nowrap;
    overflow: hidden;
}

.chat-header-spacer {
    flex: 1;
    min-width: 0.25rem;
}

.chat-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.model-selector {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    min-width: 0;
    overflow: hidden;
}

.model-selector select {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    padding: 0.2rem 0.4rem;
    font-size: var(--chat-sm);
    max-width: 130px;
    min-width: 60px;
    flex-shrink: 1;
}


/* ============================================
   CONVERSATION DRAWER
   ============================================ */

.conversation-drawer {
    display: none;
    flex-direction: column;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease;
}

.conversation-drawer.open {
    display: flex;
    max-height: 50vh;
}

.conv-drawer-header {
    padding: 0.5rem 0.75rem;
    font-size: var(--chat-sm);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.conv-drawer-controls {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.conv-sort-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 3px;
    font-size: var(--chat-sm);
    line-height: 1;
    min-width: 24px;
    min-height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.conv-sort-btn:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.conv-sort-btn.active {
    color: var(--accent);
}

.conv-search-bar {
    padding: 0.35rem 0.5rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.conv-search-bar input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    padding: 0.3rem 0.5rem;
    font-family: var(--font-sans);
    font-size: var(--chat-sm);
}

.conv-search-bar input:focus {
    outline: none;
    border-color: var(--accent);
}

.conv-search-bar input::placeholder {
    color: var(--text-muted);
}

.conv-drawer-list {
    overflow-y: auto;
    flex: 1;
    padding: 0.25rem;
}

.conv-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 0.65rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.1s;
}

.conv-item:hover {
    background: var(--bg-hover);
}

.conv-item-active {
    background: var(--bg-active);
}

.conv-item-active:hover {
    background: var(--bg-active);
}

.conv-item-content {
    flex: 1;
    min-width: 0;
}

.conv-item-title {
    font-size: var(--chat-sm);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.conv-item-meta {
    font-size: var(--chat-xs);
    color: var(--text-muted);
    margin-top: 1px;
}

.conv-item-delete {
    flex-shrink: 0;
    opacity: 0;
    transition: opacity 0.15s;
}

.conv-item:hover .conv-item-delete {
    opacity: 1;
}

.conv-empty {
    text-align: center;
    padding: 1.5rem 0.75rem;
    color: var(--text-muted);
    font-size: var(--chat-sm);
}


.chat-messages {
    flex: 1;
    min-height: 0;               /* allow flex child to shrink below content size */
    overflow-y: auto;
    padding: 1rem;
}

.chat-welcome {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-secondary);
}

.chat-welcome h3 {
    font-size: var(--chat-xl);
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.chat-welcome ul {
    list-style: none;
    text-align: left;
    margin: 1rem 0;
}

.chat-welcome li {
    padding: 0.25rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.chat-welcome li::before {
    content: "•";
    position: absolute;
    left: 0.5rem;
    color: var(--accent);
}

.chat-welcome .hint {
    font-size: var(--chat-sm);
    color: var(--text-muted);
    margin-top: 1rem;
}

.chat-message {
    margin-bottom: 1rem;
    animation: fadeIn 0.2s ease;
}

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

.chat-message .message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.25rem;
    font-size: var(--chat-sm);
}

.chat-message .message-role {
    font-weight: 500;
    color: var(--text-secondary);
}

.chat-message .message-time {
    color: var(--text-muted);
}

.chat-message .message-content {
    background: var(--bg-tertiary);
    padding: 0.75rem;
    border-radius: 6px;
    font-size: var(--chat-base);
    line-height: 1.5;
}

.chat-message.user .message-content {
    background: var(--bg-active);
}

.chat-message.error .message-content {
    background: rgba(241, 76, 76, 0.1);
    border: 1px solid var(--error);
}

.chat-message.system .message-content {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    font-size: var(--chat-md);
}

/* ---- Markdown rendering in chat messages ---- */

.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
    color: var(--text-primary);
    font-weight: 600;
    margin: 0.6em 0 0.3em;
    line-height: 1.3;
}
.message-content h1 { font-size: 1.5em; }
.message-content h2 { font-size: 1.3em; }
.message-content h3 { font-size: 1.15em; }
.message-content h4,
.message-content h5,
.message-content h6 { font-size: 1.05em; }

.message-content p {
    margin: 0.4em 0;
}

.message-content p:first-child { margin-top: 0; }
.message-content p:last-child { margin-bottom: 0; }

.message-content ul,
.message-content ol {
    padding-left: 1.5em;
    margin: 0.4em 0;
}

.message-content li { margin: 0.2em 0; }

.message-content li > p { margin: 0.2em 0; }

.message-content blockquote {
    border-left: 3px solid var(--accent);
    padding: 0.25em 0.75em;
    margin: 0.4em 0;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-radius: 0 4px 4px 0;
}

.message-content pre {
    background: var(--bg-primary);
    padding: 0.75em;
    border-radius: 4px;
    overflow-x: auto;
    margin: 0.5em 0;
    font-family: var(--font-mono);
    font-size: 0.9em;
    line-height: 1.4;
}

.message-content pre code {
    background: none;
    padding: 0;
    font-size: inherit;
}

.message-content code {
    background: var(--bg-primary);
    padding: 0.15em 0.4em;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}

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

.message-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0.75em 0;
}

.message-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 0.5em 0;
    font-size: 0.95em;
}

.message-content th,
.message-content td {
    border: 1px solid var(--border);
    padding: 0.35em 0.6em;
    text-align: left;
}

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

.message-content img {
    max-width: 100%;
    border-radius: 4px;
}

/* Summary notification — collapsible bar showing context compression */
.chat-summary-notification {
    margin: 0.5rem 0;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--border) 70%, var(--accent) 30%);
    background: var(--bg-primary);
    font-size: var(--chat-md);
}

.summary-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.75rem;
    cursor: pointer;
    background: color-mix(in srgb, var(--bg-secondary) 85%, var(--accent) 15%);
    user-select: none;
    transition: background 0.15s;
}

.summary-bar:hover {
    background: color-mix(in srgb, var(--bg-secondary) 75%, var(--accent) 25%);
}

.summary-icon { font-size: var(--chat-lg); }

.summary-label {
    flex: 1;
    color: var(--text-secondary);
}

.summary-chevron {
    color: var(--text-muted);
    font-size: var(--chat-xs);
    transition: transform 0.2s;
}

.summary-detail {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
}

.summary-detail.expanded {
    max-height: 400px;
    overflow-y: auto;
}

.summary-detail.expanded + .summary-bar .summary-chevron,
.summary-detail.expanded ~ .summary-bar .summary-chevron {
    transform: rotate(90deg);
}

/* Chevron rotation when sibling is expanded — use parent state */
.chat-summary-notification:has(.summary-detail.expanded) .summary-chevron {
    transform: rotate(90deg);
}

.summary-text {
    padding: 0.75rem;
    color: var(--text-muted);
    white-space: pre-wrap;
    line-height: 1.5;
    border-top: 1px solid var(--border);
}

.btn-summary-undo {
    padding: 0.15rem 0.5rem;
    font-size: var(--chat-xs, 11px);
    border: 1px solid color-mix(in srgb, var(--border) 60%, var(--accent) 40%);
    border-radius: 3px;
    background: var(--bg-primary);
    color: var(--accent);
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
}

.btn-summary-undo:hover {
    background: var(--accent);
    color: var(--bg-primary);
}

/* Tool call messages — compact, collapsible */
.chat-message.tool-call {
    padding: 0;
    margin: 2px 0;
}

.tool-call-details {
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-primary);
    font-size: var(--chat-sm);
    overflow: hidden;
}

.tool-call-summary {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    cursor: pointer;
    user-select: none;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    list-style: none;
}

.tool-call-summary::-webkit-details-marker {
    display: none;
}

.tool-call-summary::before {
    content: '▸';
    font-size: calc(var(--chat-xs) - 1px);
    transition: transform 0.15s;
    flex-shrink: 0;
}

.tool-call-details[open] .tool-call-summary::before {
    transform: rotate(90deg);
}

.tool-call-summary:hover {
    background: var(--bg-hover);
}

.tool-call-icon {
    flex-shrink: 0;
}

.tool-call-name {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--accent);
    flex-shrink: 0;
}

.tool-call-args-summary {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 200px;
}

.tool-call-status {
    margin-left: auto;
    flex-shrink: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 250px;
}

.tool-call-body {
    padding: 6px 8px;
    border-top: 1px solid var(--border);
}

.tool-call-section {
    margin-bottom: 6px;
}

.tool-call-section:last-child {
    margin-bottom: 0;
}

.tool-call-label {
    font-size: var(--chat-xs);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.tool-call-json {
    font-family: var(--font-mono);
    font-size: var(--chat-xs);
    background: var(--bg-secondary);
    padding: 4px 6px;
    border-radius: 3px;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 200px;
    overflow-y: auto;
    margin: 0;
    color: var(--text-secondary);
}

.chat-message.tool-error .tool-call-summary {
    border-left: 2px solid var(--error);
}

.chat-message .message-content code.inline-code {
    background: var(--bg-primary);
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: var(--chat-md);
}

.chat-message .message-content pre.code-block {
    background: var(--bg-primary);
    padding: 0.75rem;
    border-radius: 4px;
    overflow-x: auto;
    margin: 0.5rem 0;
    font-family: var(--font-mono);
    font-size: var(--chat-md);
}

.chat-message .message-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.chat-message .message-actions button {
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    border: none;
    font-size: var(--chat-md);
    cursor: pointer;
    transition: all 0.2s;
}

.chat-message .btn-apply {
    background: var(--success);
    color: var(--bg-primary);
}

.chat-message .btn-apply:hover {
    filter: brightness(1.1);
}

.chat-message .btn-reject {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.chat-message .btn-reject:hover {
    background: var(--error);
}

/* ============================================
   CHAT ACTION BUTTONS (Continue, Retry, Copy)
   ============================================ */

.chat-message .btn-action {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border);
    font-size: var(--chat-sm);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.chat-message .btn-action:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-light);
}

.chat-message .btn-continue:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.chat-message .btn-retry:hover {
    background: var(--warning);
    color: var(--bg-primary);
    border-color: var(--warning);
}

.chat-message .btn-copy:hover {
    background: var(--success);
    color: var(--bg-primary);
    border-color: var(--success);
}

.chat-message .btn-edit:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* ============================================
   INLINE MESSAGE EDITOR
   ============================================ */

.message-content.editing {
    padding: 0;
}

.edit-message-input {
    width: 100%;
    min-height: 3em;
    max-height: 50vh;
    padding: 0.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--accent);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: var(--chat-base);
    line-height: 1.5;
    resize: none;
    overflow-y: auto;
}

.edit-message-input:focus {
    outline: none;
    border-color: var(--accent-hover);
    box-shadow: 0 0 0 1px var(--accent-hover);
}

.edit-message-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.btn-edit-save:hover {
    background: var(--success) !important;
    color: var(--bg-primary) !important;
    border-color: var(--success) !important;
}

.btn-edit-cancel:hover {
    background: var(--error) !important;
    color: white !important;
    border-color: var(--error) !important;
}

.chat-message.streaming .typing-indicator {
    display: inline-block;
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Chat Input */
.chat-input-area {
    padding: 0.75rem;
    border-top: 1px solid var(--border);
    background: var(--bg-tertiary);
    flex-shrink: 0;              /* never compress the input area */
}

.chat-input-wrapper {
    display: flex;
    gap: 0.5rem;
}

.chat-input-wrapper textarea {
    flex: 1;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    font-family: var(--font-sans);
    font-size: var(--chat-base);
    resize: none;
    min-height: 60px;
    max-height: 120px;
}

.chat-input-wrapper textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.chat-input-wrapper textarea::placeholder {
    color: var(--text-muted);
}

.chat-input-actions {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.chat-input-actions button {
    padding: 0.5rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: var(--chat-md);
}

.chat-input-actions button:hover {
    background: var(--accent-hover);
}

.chat-input-actions button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.chat-input-actions .btn-stop {
    background: var(--error);
}

/* ============================================
 * ISSUE FOCUS BAR
 * Displayed at top of chat when triaging an issue
 * ============================================ */

.issue-focus-bar {
    border-bottom: 2px solid var(--accent);
    background: var(--bg-secondary);
    padding: 0.75rem;
    flex-shrink: 0;
    max-height: 40vh;
    overflow-y: auto;
}

.issue-focus-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.4rem;
}

.issue-focus-title {
    font-weight: 700;
    font-size: var(--chat-md);
    color: var(--text-primary);
    line-height: 1.3;
}

.issue-focus-controls {
    display: flex;
    gap: 0.25rem;
    flex-shrink: 0;
}

.issue-focus-controls .btn-sm {
    padding: 0.15rem 0.4rem;
    font-size: var(--chat-sm);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 3px;
    cursor: pointer;
    color: var(--text-secondary);
}

.issue-focus-controls .btn-sm:hover {
    background: var(--bg-tertiary);
}

.issue-focus-meta {
    font-size: var(--chat-sm);
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.issue-focus-meta .issue-label {
    display: inline-block;
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 3px;
    background: var(--accent);
    color: white;
    margin-right: 0.25rem;
}

.issue-focus-body {
    font-size: var(--chat-sm);
    color: var(--text-secondary);
    max-height: 80px;
    overflow-y: auto;
    padding: 0.4rem 0.5rem;
    background: var(--bg-primary);
    border-radius: 4px;
    border: 1px solid var(--border);
    margin-bottom: 0.4rem;
    line-height: 1.4;
}

.issue-focus-body:empty {
    display: none;
}

.issue-focus-comments {
    font-size: var(--chat-sm);
    max-height: 100px;
    overflow-y: auto;
    padding: 0.4rem 0.5rem;
    background: var(--bg-primary);
    border-radius: 4px;
    border: 1px solid var(--border);
    margin-bottom: 0.4rem;
}

.issue-focus-comments:empty {
    display: none;
}

.issue-focus-comment-item {
    border-left: 2px solid var(--accent);
    padding-left: 0.5rem;
    margin-bottom: 0.35rem;
}

.issue-focus-comment-item:last-child {
    margin-bottom: 0;
}

.issue-focus-comment-meta {
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
}

.issue-focus-comment-body {
    color: var(--text-secondary);
    line-height: 1.35;
}

.issue-focus-comment-body p {
    margin: 0.15em 0;
}

.issue-focus-actions {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.issue-focus-actions .btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: var(--chat-sm);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: background 0.15s, border-color 0.15s;
}

.issue-focus-actions .btn-accept:hover {
    background: #22863a20;
    border-color: #22863a;
    color: #22863a;
}

.issue-focus-actions .btn-deny:hover {
    background: #cb253620;
    border-color: #cb2536;
    color: #cb2536;
}

.issue-focus-actions .btn-comment:hover {
    background: var(--accent-bg, rgba(79, 139, 255, 0.1));
    border-color: var(--accent);
    color: var(--accent);
}

.issue-focus-actions .btn-work:hover {
    background: #6f42c120;
    border-color: #6f42c1;
    color: #6f42c1;
}

/* ============================================
 * IMAGE ATTACHMENTS — preview strip + message images
 * ============================================ */

/* Preview strip above input: shows pending images before send */
.image-preview-strip {
    display: flex;
    gap: 0.5rem;
    padding: 0.5rem 0;
    flex-wrap: wrap;
}

.image-preview-thumb {
    position: relative;
    width: 64px;
    height: 64px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
    flex-shrink: 0;
}

.image-preview-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.image-preview-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.65);
    color: #fff;
    font-size: 10px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    opacity: 0;
    transition: opacity 0.15s;
}

.image-preview-thumb:hover .image-preview-remove {
    opacity: 1;
}

/* Drag-over highlight on textarea */
.chat-input-wrapper textarea.drag-over {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(79, 139, 255, 0.25);
}

/* Images rendered inside chat messages */
.message-images {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin: 0.25rem 0 0.5rem;
}

.message-image {
    max-width: 200px;
    max-height: 150px;
    border-radius: 6px;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: opacity 0.15s;
    object-fit: contain;
}

.message-image:hover {
    opacity: 0.85;
}

/* Fullscreen image overlay */
.image-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
}

.image-overlay img {
    max-width: 90vw;
    max-height: 90vh;
    border-radius: 8px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}