/* AI Chat Panel */

.ai-chat-panel {
    width: 360px;
    min-width: 0;
    flex-shrink: 0;
    background: var(--bg-main);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width 0.25s ease, opacity 0.25s ease;
}

#aiChatPanel.hidden {
    display: flex !important;
    width: 0 !important;
    min-width: 0 !important;
    padding: 0 !important;
    opacity: 0 !important;
    border-left: none !important;
    overflow: hidden !important;
    pointer-events: none !important;
}

.ai-chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    font-size: 0.9rem;
}

.ai-chat-header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-model-select {
    font-size: 0.8rem;
    padding: 4px 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-main);
    color: var(--text-primary);
    max-width: 200px;
}

.ai-chat-header .close-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.ai-chat-header .close-btn:hover {
    background: var(--light);
    color: var(--text-primary);
}

.ai-chat-header .close-btn svg {
    width: 16px;
    height: 16px;
}

.ai-chat-messages {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* Messages */

.ai-message {
    padding: 8px 12px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    max-width: 85%;
    word-break: break-word;
    line-height: 1.5;
}

.ai-message-user {
    background: var(--primary);
    color: white;
    align-self: flex-end;
}

.ai-message-assistant {
    background: var(--light);
    color: var(--text-primary);
    align-self: flex-start;
}

.ai-message-system {
    background: var(--warning);
    color: var(--dark);
    align-self: flex-start;
    font-size: 0.8rem;
}

.ai-message-content {
    line-height: 1.6;
}

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

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

.ai-message-content code {
    background: rgba(0,0,0,0.1);
    padding: 1px 4px;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.85em;
}

.ai-message-content pre {
    background: var(--light);
    padding: 10px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 0.4em 0;
    font-size: 0.85rem;
}

.ai-message-content pre code {
    background: none;
    padding: 0;
}

.ai-message-content ul,
.ai-message-content ol {
    padding-left: 1.2em;
    margin: 0.3em 0;
}

.ai-message-content blockquote {
    border-left: 3px solid var(--primary);
    padding-left: 0.8em;
    margin: 0.4em 0;
    color: var(--text-secondary);
}

.ai-message-content a {
    color: var(--primary);
}

.ai-message-content strong {
    font-weight: 600;
}

/* Thinking Indicator */

.ai-thinking {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--light);
    border-radius: var(--radius);
    align-self: flex-start;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.ai-thinking-dots {
    display: flex;
    gap: 4px;
}

.ai-thinking-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    animation: thinkBounce 1.4s ease-in-out infinite;
}

.ai-thinking-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.ai-thinking-dot:nth-child(3) {
    animation-delay: 0.4s;
}

/* Reasoning Block (low-profile) */

.ai-reasoning {
    align-self: flex-start;
    max-width: 90%;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.ai-reasoning-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    user-select: none;
    font-size: 0.78rem;
    color: var(--text-muted);
    transition: color var(--transition);
    background: transparent;
    border: none;
    font-family: var(--font-sans);
    padding: 2px 0;
}

.ai-reasoning-toggle:hover {
    color: var(--text-primary);
}

.ai-reasoning-toggle svg {
    width: 11px;
    height: 11px;
    transition: transform var(--transition);
    flex-shrink: 0;
}

.ai-reasoning-toggle.open svg {
    transform: rotate(90deg);
}

.ai-reasoning-content {
    display: none;
    padding: 4px 0 4px 16px;
    line-height: 1.6;
    white-space: pre-wrap;
    font-size: 0.78rem;
    color: var(--text-muted);
    max-height: 300px;
    overflow-y: auto;
    border-left: 2px solid var(--border);
    margin: 3px 0;
}

.ai-reasoning-content.open {
    display: block;
}

/* Tool Call Messages (low-profile, like reasoning) */

.ai-tool-call {
    align-self: flex-start;
    max-width: 90%;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.ai-tool-call-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    user-select: none;
    font-size: 0.78rem;
    color: var(--text-muted);
    transition: color var(--transition);
    background: transparent;
    border: none;
    font-family: var(--font-sans);
    padding: 2px 0;
}

.ai-tool-call-toggle:hover {
    color: var(--text-primary);
}

.ai-tool-call-toggle svg {
    width: 11px;
    height: 11px;
    transition: transform var(--transition);
    flex-shrink: 0;
}

.ai-tool-call-toggle.open svg {
    transform: rotate(90deg);
}

.ai-tool-call-toggle .tool-call-icon {
    display: flex;
    align-items: center;
    color: var(--text-muted);
}

.ai-tool-call-toggle .tool-call-icon svg {
    width: 11px;
    height: 11px;
}

.ai-tool-call-toggle .tool-call-name {
    font-weight: 500;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: var(--text-secondary);
    margin-right: auto;
}

.ai-tool-call-toggle .tool-call-status {
    margin-left: auto;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    gap: 3px;
}

.ai-tool-call-toggle .tool-call-status.running {
    color: var(--primary);
}

.ai-tool-call-toggle .tool-call-status.success,
.ai-tool-call-toggle.done .tool-call-status {
    color: var(--success);
}

.ai-tool-call-toggle .tool-call-status.error {
    color: var(--danger);
}

.tool-call-spinner {
    display: inline-block;
    width: 10px;
    height: 10px;
    border: 1.5px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.tool-call-done-icon {
    font-size: 0.75rem;
    line-height: 1;
}

.tool-call-error-icon {
    font-size: 0.75rem;
    line-height: 1;
}

/* Tool call expandable content */

.ai-tool-call-content {
    display: none;
    padding: 4px 0 4px 16px;
    border-left: 2px solid var(--border);
    margin: 2px 0;
}

.ai-tool-call-content.open {
    display: block;
}

.ai-tool-call-args {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    white-space: pre-wrap;
    word-break: break-word;
    padding: 4px 6px;
    margin: 2px 0;
    color: var(--text-muted);
    line-height: 1.4;
    max-height: 180px;
    overflow-y: auto;
    background: transparent;
    border-radius: 0;
}

.ai-tool-call-result {
    margin-top: 3px;
    padding: 3px 6px;
    font-size: 0.76rem;
    line-height: 1.4;
    border-radius: 0;
    background: transparent;
}

.ai-tool-call-result.success {
    color: var(--success);
}

.ai-tool-call-result.error {
    color: var(--danger);
}

/* Chat Input Area */

.ai-chat-input-area {
    display: flex;
    gap: 8px;
    padding: 12px;
    border-top: 1px solid var(--border);
}

.ai-chat-input-area textarea {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    resize: none;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    line-height: 1.5;
    min-height: 40px;
    max-height: 160px;
    background: var(--editor-bg);
    color: var(--editor-text);
    overflow-y: auto;
}

.ai-chat-input-area textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.ai-chat-input-area textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.ai-chat-input-area .btn {
    align-self: flex-end;
    flex-shrink: 0;
}