* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #FAF8F4;
    --sidebar-bg: #FAF8F4;
    --sidebar-border: #D5CFC4;
    --sidebar-text: #2D2B28;
    --sidebar-hover: #F0EDE6;
    --sidebar-active: #E8E2D8;
    --user-bg: #EBE4DA;
    --assistant-bg: transparent;
    --input-bg: #FAF8F4;
    --input-container-bg: #FFFFFF;
    --border: #D5CFC4;
    --text: #2D2B28;
    --text-light: #5C574F;
    --accent: #C15F3C;
    --danger: #C15F3C;
    --font-serif: 'Libre Baskerville', 'Georgia', serif;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

.app {
    display: flex;
    height: 100vh;
    height: 100dvh;
}

/* =============================================
   Sidebar
   ============================================= */
.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    border-right: 1px solid var(--sidebar-border);
    overflow: hidden;
}

/* Sidebar tab selectors — pill style */
.sidebar-tabs {
    display: flex;
    gap: 4px;
    padding: 12px 12px 0;
    flex-shrink: 0;
}

.sidebar-tab-btn {
    flex: 1;
    padding: 7px 0;
    border: none;
    border-radius: 8px;
    background: none;
    color: var(--text-light);
    font-size: 13px;
    font-family: var(--font-sans);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    touch-action: manipulation;
}

.sidebar-tab-btn:hover {
    background: var(--sidebar-hover);
    color: var(--text);
}

.sidebar-tab-btn.active {
    background: var(--accent);
    color: white;
}

/* Sidebar search */
.sidebar-search {
    padding: 10px 12px;
    flex-shrink: 0;
}

.sidebar-search-input {
    width: 100%;
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    font-family: var(--font-sans);
    background: var(--input-container-bg);
    color: var(--text);
}

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

.sidebar-search-input::placeholder {
    color: var(--text-light);
}

/* Sidebar content panels */
#chatSidebar, #playbookSidebar {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.sidebar-header {
    padding: 0 12px 8px;
    flex-shrink: 0;
}

.btn-new {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 10px 12px;
    background: none;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-sans);
    transition: background 0.15s;
}

.btn-new:hover {
    background: var(--sidebar-hover);
}

.conversation-list {
    flex: 1;
    overflow-y: auto;
    padding: 4px 8px;
}

.conv-item {
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2px;
    font-size: 13px;
    line-height: 1.4;
    color: var(--text);
    transition: background 0.15s;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) {
    .conv-item:hover {
        background: var(--sidebar-hover);
    }
}

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

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

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

.conv-item .title {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.conv-item .meta {
    display: none;
}

.conv-item .delete-btn {
    visibility: hidden;
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 2px 6px;
    font-size: 14px;
    border-radius: 4px;
    flex-shrink: 0;
    margin-left: 8px;
    transition: color 0.15s;
    touch-action: manipulation;
}

@media (hover: hover) {
    .conv-item:hover .delete-btn {
        visibility: visible;
    }
}

.conv-item.active .delete-btn {
    visibility: visible;
}

.conv-item .delete-btn:hover {
    color: var(--accent);
}

/* Sidebar resize handle */
.sidebar-resize-handle {
    width: 4px;
    cursor: col-resize;
    flex-shrink: 0;
    background: transparent;
    transition: background 0.15s;
    position: relative;
}

.sidebar-resize-handle::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: -2px;
    right: -2px;
}

.sidebar-resize-handle:hover,
.sidebar-resize-handle.dragging {
    background: var(--accent);
    opacity: 0.4;
}

/* Sidebar toggle (mobile) */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 100;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 18px;
    cursor: pointer;
}

/* Hide hamburger when sidebar is open */
.sidebar.open ~ .sidebar-toggle,
.sidebar.open ~ .mobile-tab-bar .sidebar-toggle {
    display: none !important;
}

/* Mobile tab bar — hidden on desktop */
.mobile-tab-bar {
    display: none;
}

/* Sidebar overlay (mobile) */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.2);
    z-index: 40;
}

.sidebar-overlay.open {
    display: block;
}

/* =============================================
   Main content area
   ============================================= */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* Tab content */
.tab-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.messages {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 24px 32px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.empty-state {
    margin: auto;
    text-align: center;
    color: var(--text-light);
    max-width: 400px;
}

.empty-state h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    margin-bottom: 8px;
    color: var(--text);
}

.empty-state .hint {
    font-size: 13px;
    margin-top: 8px;
    opacity: 0.7;
}

/* Chat loading indicator */
.chat-loading {
    margin: auto;
    display: flex;
    gap: 6px;
    align-items: center;
    justify-content: center;
}

.chat-loading-dot {
    width: 8px;
    height: 8px;
    background: var(--text-light);
    border-radius: 50%;
    animation: chat-loading-bounce 1.4s infinite ease-in-out both;
}

.chat-loading-dot:nth-child(1) { animation-delay: -0.32s; }
.chat-loading-dot:nth-child(2) { animation-delay: -0.16s; }
.chat-loading-dot:nth-child(3) { animation-delay: 0s; }

@keyframes chat-loading-bounce {
    0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
    40% { opacity: 1; transform: scale(1); }
}

/* Messages */
.message {
    line-height: 1.7;
    font-size: 15px;
    position: relative;
    max-width: 100%;
    overflow: visible;
    word-break: break-word;
}

.message.user {
    align-self: flex-end;
    max-width: 65%;
    background: var(--user-bg);
    border-radius: 18px;
    padding: 12px 18px;
    color: var(--text);
}

.message.assistant {
    align-self: stretch;
    background: none;
    padding: 4px 0;
}

.message.assistant .actions {
    display: flex;
    gap: 4px;
    margin-top: 8px;
}

.message.assistant .copy-btn {
    background: none;
    border: none;
    border-radius: 4px;
    padding: 4px;
    cursor: pointer;
    color: var(--text-light);
    opacity: 0.5;
    transition: opacity 0.15s;
    display: flex;
    align-items: center;
}

.message.assistant .copy-btn:hover {
    opacity: 1;
    color: var(--accent);
}

/* Markdown content */
.message .content p { margin-bottom: 10px; }
.message .content p:last-child { margin-bottom: 0; }
.message .content ul, .message .content ol { margin: 8px 0; padding-left: 20px; }
.message .content li { margin-bottom: 4px; line-height: 1.5; }
.message .content strong { font-weight: 700; }
.message .content code {
    background: rgba(45, 43, 40, 0.08);
    padding: 2px 5px;
    border-radius: 3px;
    font-size: 13px;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}
.message .content pre {
    background: rgba(45, 43, 40, 0.08);
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 8px 0;
}
.message .content pre code { background: none; padding: 0; }
.message .content table { border-collapse: collapse; margin: 8px 0; font-size: 13px; font-family: var(--font-sans); }
.message .content th, .message .content td {
    border: 1px solid var(--border);
    padding: 6px 10px;
    text-align: left;
}
.message .content th { background: var(--sidebar-hover); font-weight: 600; }
.message .content h1, .message .content h2, .message .content h3 {
    margin: 16px 0 8px 0;
    font-size: 16px;
    font-family: var(--font-sans);
    font-weight: 600;
}
.message .content blockquote {
    border-left: 3px solid var(--border);
    padding-left: 12px;
    color: var(--text-light);
    margin: 8px 0;
    font-style: italic;
}

/* Pull to refresh */
.pull-refresh-indicator {
    text-align: center;
    font-size: 13px;
    color: var(--text-light);
    height: 0;
    opacity: 0;
    overflow: hidden;
    transition: height 0.2s, opacity 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Input area */
.input-area {
    padding: 0 32px 16px;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.input-container {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    background: var(--input-container-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 8px 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    transition: border-color 0.15s;
}

.input-container.drag-over {
    border-color: var(--accent);
    background: rgba(193, 95, 60, 0.04);
}

.input-container:focus-within {
    border-color: var(--accent);
}

.input-container textarea {
    flex-basis: 100%;
    padding: 4px 8px;
    border: none;
    resize: none;
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
    min-height: 24px;
    max-height: 45vh;
    overflow-y: hidden;
    background: transparent;
    color: var(--text);
}

.input-container textarea:focus {
    outline: none;
}

.input-container textarea::placeholder {
    color: var(--text-light);
}

.input-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
    margin-left: auto;
}

/* Model selector — inside input actions */
.input-actions select {
    padding: 4px 8px;
    border: none;
    background: none;
    color: var(--text-light);
    font-size: 12px;
    font-family: var(--font-sans);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235C574F' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 2px center;
    padding-right: 18px;
}

.input-actions select:focus {
    outline: none;
}

/* Send button */
.btn-send {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    padding: 0;
    transition: opacity 0.15s;
}

.btn-send:hover { opacity: 0.85; }
.btn-send:disabled { opacity: 0.3; cursor: not-allowed; }

.input-footer {
    margin-top: 8px;
    font-size: 11px;
    color: var(--text-light);
    opacity: 0.6;
}

/* Attach button — inside input actions */
.btn-attach {
    display: flex;
    align-items: center;
    padding: 4px;
    background: none;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-light);
    transition: color 0.15s;
}

.btn-attach:hover {
    color: var(--accent);
}

/* Image previews — above textarea in input container */
.image-previews {
    display: none;
    flex-basis: 100%;
    gap: 8px;
    padding: 4px 0 8px;
    overflow-x: auto;
}

.image-preview {
    position: relative;
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    border-radius: 8px;
    overflow: hidden;
}

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

.image-preview-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 18px;
    height: 18px;
    background: rgba(0,0,0,0.6);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 12px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.image-preview-remove:hover {
    background: rgba(0,0,0,0.8);
}

/* Images in chat messages */
.message-images {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
    max-width: 100%;
    overflow: hidden;
}

.message-image {
    max-width: min(300px, 100%);
    max-height: 200px;
    border-radius: 8px;
    cursor: pointer;
    object-fit: contain;
    transition: opacity 0.15s;
}

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

.message-usage {
    font-size: 11px;
    color: var(--text-muted);
    opacity: 0.5;
    margin-top: 6px;
    font-family: var(--font-sans);
}

/* Image zoom modal */
.image-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    cursor: pointer;
    padding: 24px;
}

.image-modal img {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
    border-radius: 8px;
    cursor: default;
}

/* Mic button — inside input container */
.btn-mic {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px;
    background: none;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-light);
    transition: color 0.15s;
}

.btn-mic:hover {
    color: var(--accent);
}

.btn-mic.recording {
    color: var(--accent);
    animation: pulse-recording 1.5s infinite;
}

.mic-timer {
    font-size: 11px;
    font-variant-numeric: tabular-nums;
    min-width: 28px;
    color: var(--accent);
}

.btn-mic.transcribing {
    color: var(--accent);
    animation: pulse-recording 1s infinite;
    cursor: wait;
}

@keyframes pulse-recording {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Streaming indicator */
.streaming-dot::after {
    content: '\2726';
    display: inline-block;
    color: var(--accent);
    margin-left: 4px;
    font-size: 14px;
    animation: sparkle-pulse 1.2s ease-in-out infinite;
}

@keyframes sparkle-pulse {
    0%, 100% { opacity: 0.3; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.1); }
}

/* Live indicator */
.live-badge {
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    margin-left: 6px;
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* Sources panel */
.sources-panel {
    margin-top: 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 12px;
    overflow: hidden;
}

.sources-panel summary {
    padding: 6px 12px;
    cursor: pointer;
    color: var(--text-light);
    font-size: 12px;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.sources-panel summary::-webkit-details-marker { display: none; }
.sources-panel summary::before {
    content: '\25B6';
    font-size: 8px;
    transition: transform 0.15s;
}
.sources-panel[open] summary::before { transform: rotate(90deg); }

.sources-panel summary:hover { color: var(--text); }

.source-model-badge {
    margin-left: auto;
    font-size: 11px;
    opacity: 0.5;
}

.sources-content {
    padding: 4px 12px 8px;
    border-top: 1px solid var(--border);
}

.source-item {
    padding: 6px 0;
    border-bottom: 1px solid rgba(213, 207, 196, 0.15);
}

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

.source-name {
    font-weight: 500;
    color: var(--text);
    margin-bottom: 2px;
}

.source-score-bar {
    height: 3px;
    background: rgba(213, 207, 196, 0.3);
    border-radius: 2px;
    margin: 4px 0;
    max-width: 120px;
}

.source-score-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
}

.source-preview {
    color: var(--text-light);
    font-size: 11px;
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.web-search-item .source-name { color: var(--accent); }
.perplexity-search-item .source-name { color: #8B5CF6; }

/* Perplexity search confirmation */
.search-confirm {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--input-container-bg);
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.search-confirm.confirmed {
    border-color: #4a9d6e;
    background: rgba(74, 157, 110, 0.05);
}

.search-confirm.declined {
    opacity: 0.5;
}

.search-confirm-icon {
    flex-shrink: 0;
    color: #8B5CF6;
}

.search-confirm-text {
    flex: 1;
    min-width: 0;
    font-size: 14px;
}

.search-confirm-query {
    margin-top: 4px;
    font-size: 13px;
    color: var(--text-light);
    font-style: italic;
}

.search-confirm-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.search-confirm-btn {
    padding: 6px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 0.15s;
}

.search-confirm-btn.approve {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.search-confirm-btn.approve:hover { opacity: 0.85; }

.search-confirm-btn.decline {
    background: none;
    color: var(--text-light);
}

.search-confirm-btn.decline:hover { background: var(--sidebar-hover); }
.search-confirm-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.search-confirm-timer {
    font-size: 11px;
    color: var(--text-light);
    font-variant-numeric: tabular-nums;
    min-width: 24px;
}

.search-confirm-status {
    font-size: 12px;
    color: var(--text-light);
}

/* Scrollbar styling */
.messages::-webkit-scrollbar { width: 6px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.conversation-list::-webkit-scrollbar { width: 4px; }
.conversation-list::-webkit-scrollbar-track { background: transparent; }
.conversation-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* =============================================
   Playbook — sidebar nav content
   ============================================= */

.pb-nav-content {
    flex: 1;
    overflow-y: auto;
}

.playbook-nav-header {
    padding: 4px 16px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-light);
}

#playbookSidebar details {
    margin-bottom: 2px;
}

#playbookSidebar summary {
    padding: 6px 16px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
    user-select: none;
}

#playbookSidebar summary::-webkit-details-marker { display: none; }

#playbookSidebar summary::before {
    content: '\25B6';
    font-size: 8px;
    transition: transform 0.15s;
    flex-shrink: 0;
}

#playbookSidebar details[open] > summary::before {
    transform: rotate(90deg);
}

#playbookSidebar summary:hover {
    background: var(--sidebar-hover);
}

.pb-file-link {
    display: block;
    padding: 5px 16px 5px 28px;
    font-size: 13px;
    color: var(--text);
    cursor: pointer;
    text-decoration: none;
    border-radius: 0;
    transition: background 0.1s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.pb-file-link:hover {
    background: var(--sidebar-hover);
}

.pb-file-link.active {
    background: var(--sidebar-active);
    font-weight: 500;
}

/* Playbook content area */
.playbook-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px 32px;
    min-width: 0;
}

.playbook-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-light);
    text-align: center;
}

.playbook-empty h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    color: var(--text);
    margin-bottom: 8px;
}

/* Playbook viewer header */
.pb-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    gap: 12px;
}

.pb-breadcrumb {
    font-size: 12px;
    color: var(--text-light);
}

.pb-title {
    font-family: var(--font-serif);
    font-size: 20px;
    margin: 0;
}

.pb-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

.pb-btn {
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: none;
    color: var(--text);
    font-size: 13px;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 0.15s;
}

.pb-btn:hover {
    background: var(--sidebar-hover);
}

.pb-btn-primary {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.pb-btn-primary:hover {
    opacity: 0.85;
    background: var(--accent);
}

/* Playbook rendered content — reuse markdown styles */
.pb-rendered {
    line-height: 1.7;
    font-size: 15px;
}

.pb-rendered p { margin-bottom: 10px; }
.pb-rendered p:last-child { margin-bottom: 0; }
.pb-rendered ul, .pb-rendered ol { margin: 8px 0; padding-left: 20px; }
.pb-rendered li { margin-bottom: 4px; line-height: 1.5; }
.pb-rendered strong { font-weight: 700; }
.pb-rendered code {
    background: rgba(45, 43, 40, 0.08);
    padding: 2px 5px;
    border-radius: 3px;
    font-size: 13px;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}
.pb-rendered pre {
    background: rgba(45, 43, 40, 0.08);
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 8px 0;
}
.pb-rendered pre code { background: none; padding: 0; }
.pb-rendered table { border-collapse: collapse; margin: 8px 0; font-size: 13px; }
.pb-rendered th, .pb-rendered td {
    border: 1px solid var(--border);
    padding: 6px 10px;
    text-align: left;
}
.pb-rendered th { background: var(--sidebar-hover); font-weight: 600; }
.pb-rendered h1, .pb-rendered h2, .pb-rendered h3 {
    margin: 16px 0 8px 0;
    font-family: var(--font-sans);
    font-weight: 600;
}
.pb-rendered h1 { font-size: 18px; }
.pb-rendered h2 { font-size: 16px; }
.pb-rendered h3 { font-size: 15px; }
.pb-rendered blockquote {
    border-left: 3px solid var(--border);
    padding-left: 12px;
    color: var(--text-light);
    margin: 8px 0;
    font-style: italic;
}

/* Playbook editor */
.pb-editor {
    display: flex;
    gap: 16px;
    flex: 1;
    min-height: 0;
}

.pb-editor-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.pb-editor-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-light);
    margin-bottom: 6px;
}

.pb-editor textarea {
    flex: 1;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 13px;
    line-height: 1.6;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--input-container-bg);
    color: var(--text);
    resize: none;
    tab-size: 2;
}

.pb-editor textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.pb-editor-preview {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--input-container-bg);
}

.pb-edit-footer {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
}

.pb-edit-summary {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    font-family: var(--font-sans);
    background: var(--input-container-bg);
    color: var(--text);
}

.pb-edit-summary:focus {
    outline: none;
    border-color: var(--accent);
}

/* Version history */
.pb-history {
    margin-top: 24px;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}

.pb-history-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pb-version-list {
    list-style: none;
}

.pb-version-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(213, 207, 196, 0.3);
    font-size: 13px;
}

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

.pb-version-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    flex-shrink: 0;
}

.pb-version-badge.human {
    background: rgba(193, 95, 60, 0.12);
    color: var(--accent);
}

.pb-version-badge.ai {
    background: rgba(74, 124, 89, 0.12);
    color: #4A7C59;
}

.pb-version-info {
    flex: 1;
    min-width: 0;
}

.pb-version-summary {
    color: var(--text);
}

.pb-version-date {
    font-size: 12px;
    color: var(--text-light);
}

.pb-version-actions {
    flex-shrink: 0;
}

/* Toast notification */
.pb-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 10px 20px;
    background: var(--text);
    color: var(--bg);
    border-radius: 8px;
    font-size: 13px;
    z-index: 200;
    animation: toast-in 0.2s ease-out;
}

@keyframes toast-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Sidebar scrollbars */
#playbookSidebar .pb-nav-content::-webkit-scrollbar { width: 4px; }
#playbookSidebar .pb-nav-content::-webkit-scrollbar-track { background: transparent; }
#playbookSidebar .pb-nav-content::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.playbook-content::-webkit-scrollbar { width: 6px; }
.playbook-content::-webkit-scrollbar-track { background: transparent; }
.playbook-content::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* Playbook search results (in sidebar) */
.pb-search-results {
    overflow-y: auto;
    flex: 1;
}

.pb-search-result {
    padding: 8px 16px;
    cursor: pointer;
    border-bottom: 1px solid rgba(213, 207, 196, 0.2);
    transition: background 0.1s;
}

.pb-search-result:hover {
    background: var(--sidebar-hover);
}

.pb-search-result-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
}

.pb-search-result-category {
    font-size: 11px;
    color: var(--text-light);
}

.pb-search-result-snippet {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.4;
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.pb-search-result-snippet mark {
    background: rgba(193, 95, 60, 0.15);
    color: var(--text);
    border-radius: 2px;
    padding: 0 1px;
}

/* Feature requests */
.pb-fr-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    cursor: pointer;
    border-bottom: 1px solid var(--border);
    transition: background 0.1s;
}

.pb-fr-nav-link:hover {
    background: var(--sidebar-hover);
}

.pb-fr-nav-link.active {
    background: var(--sidebar-active);
}

.pb-fr-count {
    background: var(--accent);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 1px 7px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
}

.pb-fr-item {
    padding: 16px 0;
    border-bottom: 1px solid rgba(213, 207, 196, 0.3);
}

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

.pb-fr-item-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.pb-fr-item-title {
    font-weight: 600;
    font-size: 15px;
    flex: 1;
}

.pb-fr-item-desc {
    font-size: 14px;
    color: var(--text);
    line-height: 1.5;
    margin-bottom: 8px;
}

.pb-fr-item-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-light);
}

.pb-fr-status-select {
    padding: 3px 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 12px;
    font-family: var(--font-sans);
    background: var(--input-container-bg);
    color: var(--text);
    cursor: pointer;
}

.pb-fr-status-select:focus {
    outline: none;
    border-color: var(--accent);
}

.pb-fr-delete-btn {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 16px;
    padding: 2px 6px;
    border-radius: 4px;
    transition: color 0.15s;
}

.pb-fr-delete-btn:hover {
    color: var(--accent);
}

.pb-fr-empty {
    text-align: center;
    color: var(--text-light);
    padding: 40px 0;
    font-size: 14px;
}

/* Shared tracker item styles (Feature Requests + Escalations) */
.pb-tracker-item { padding: 16px 0; border-bottom: 1px solid rgba(213, 207, 196, 0.3); }
.pb-tracker-item:last-child { border-bottom: none; }
.pb-tracker-header { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.pb-tracker-title { font-weight: 600; font-size: 15px; flex: 1; cursor: pointer; border-radius: 4px; padding: 2px 4px; margin: -2px -4px; }
.pb-tracker-title:hover { background: var(--sidebar-hover); }
.pb-tracker-desc { font-size: 14px; color: var(--text); line-height: 1.5; margin-bottom: 8px; cursor: pointer; border-radius: 4px; padding: 2px 4px; margin-left: -4px; margin-right: -4px; }
.pb-tracker-desc:hover { background: var(--sidebar-hover); }
.pb-tracker-desc-empty { color: var(--text-light); font-style: italic; }
.pb-tracker-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--text-light); flex-wrap: wrap; }
.pb-tracker-status-select { padding: 3px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 12px; font-family: var(--font-sans); background: var(--input-container-bg); color: var(--text); cursor: pointer; }
.pb-tracker-status-select:focus { outline: none; border-color: var(--accent); }
.pb-tracker-delete-btn { background: none; border: none; color: var(--text-light); cursor: pointer; font-size: 16px; padding: 2px 6px; border-radius: 4px; transition: color 0.15s; }
.pb-tracker-delete-btn:hover { color: var(--accent); }
.pb-tracker-empty { text-align: center; color: var(--text-light); padding: 40px 0; font-size: 14px; }

/* Inline editing */
.pb-tracker-inline-input {
    width: 100%; padding: 4px 8px; border: 1px solid var(--accent); border-radius: 4px;
    font-size: 15px; font-weight: 600; font-family: var(--font-sans);
    background: var(--input-container-bg); color: var(--text); box-sizing: border-box;
}
.pb-tracker-inline-input:focus { outline: none; }
.pb-tracker-inline-textarea {
    width: 100%; padding: 4px 8px; border: 1px solid var(--accent); border-radius: 4px;
    font-size: 14px; font-family: var(--font-sans); background: var(--input-container-bg);
    color: var(--text); line-height: 1.5; resize: vertical; min-height: 40px; box-sizing: border-box;
}
.pb-tracker-inline-textarea:focus { outline: none; }

/* Create form */
.pb-tracker-create-form {
    display: flex; flex-direction: column; gap: 8px; padding: 16px;
    margin-bottom: 16px; border: 1px solid var(--border); border-radius: 8px;
    background: var(--input-container-bg);
}
.pb-tracker-create-input {
    padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px;
    font-size: 14px; font-family: var(--font-sans); background: var(--bg);
    color: var(--text); box-sizing: border-box;
}
.pb-tracker-create-input:focus { outline: none; border-color: var(--accent); }
.pb-tracker-create-textarea {
    padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px;
    font-size: 14px; font-family: var(--font-sans); background: var(--bg);
    color: var(--text); resize: vertical; min-height: 60px; box-sizing: border-box;
}
.pb-tracker-create-textarea:focus { outline: none; border-color: var(--accent); }
.pb-tracker-create-select {
    padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px;
    font-size: 14px; font-family: var(--font-sans); background: var(--bg);
    color: var(--text); cursor: pointer;
}
.pb-tracker-create-select:focus { outline: none; border-color: var(--accent); }
.pb-tracker-create-actions { display: flex; gap: 8px; justify-content: flex-end; }

/* Escalation nav link */
.pb-esc-nav-link {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 16px; font-size: 13px; font-weight: 600; color: #D97706;
    cursor: pointer; border-bottom: 1px solid var(--border); transition: background 0.1s;
}
.pb-esc-nav-link:hover { background: var(--sidebar-hover); }
.pb-esc-nav-link.active { background: var(--sidebar-active); }
.pb-esc-count {
    background: #D97706; color: white; font-size: 11px; font-weight: 600;
    padding: 1px 7px; border-radius: 10px; min-width: 18px; text-align: center;
}

/* Priority badges */
.pb-esc-priority {
    font-size: 11px; font-weight: 600; padding: 1px 8px; border-radius: 10px;
    text-transform: uppercase; letter-spacing: 0.03em; flex-shrink: 0;
}
.pb-esc-priority-low { background: rgba(107, 114, 128, 0.12); color: #6B7280; }
.pb-esc-priority-medium { background: rgba(59, 130, 246, 0.12); color: #3B82F6; }
.pb-esc-priority-high { background: rgba(245, 158, 11, 0.12); color: #D97706; }
.pb-esc-priority-urgent { background: rgba(239, 68, 68, 0.12); color: #DC2626; }

/* Playbook home search — centered on empty state */
.playbook-home-search {
    width: 100%;
    max-width: 400px;
    margin-top: 16px;
}

.playbook-home-search-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    font-family: var(--font-sans);
    background: var(--input-container-bg);
    color: var(--text);
}

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

.playbook-home-search-input::placeholder {
    color: var(--text-light);
}

.playbook-home-results {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 8px;
    text-align: left;
}

.playbook-home-result {
    padding: 10px 14px;
    background: var(--input-container-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.1s, border-color 0.1s;
}

.playbook-home-result:hover,
.playbook-home-result:active {
    background: var(--sidebar-hover);
    border-color: var(--accent);
}

.playbook-home-result-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}

.playbook-home-result-category {
    font-size: 11px;
    color: var(--text-light);
    margin-top: 1px;
}

/* Playbook mobile search — hidden on desktop */
.playbook-mobile-search {
    display: none;
}

.playbook-mobile-search-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    font-family: var(--font-sans);
    background: var(--input-container-bg);
    color: var(--text);
}

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

.playbook-mobile-search-input::placeholder {
    color: var(--text-light);
}

.playbook-mobile-results {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 8px;
}

.playbook-mobile-result {
    padding: 10px 14px;
    background: var(--input-container-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.1s, border-color 0.1s;
}

.playbook-mobile-result:hover,
.playbook-mobile-result:active {
    background: var(--sidebar-hover);
    border-color: var(--accent);
}

.playbook-mobile-result-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}

.playbook-mobile-result-category {
    font-size: 11px;
    color: var(--text-light);
    margin-top: 1px;
}

/* =============================================
   Mobile
   ============================================= */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 50;
        transform: translateX(-100%);
        transition: transform 0.2s;
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }

    .sidebar.open { transform: translateX(0); }

    /* Hide sidebar tabs on mobile — tabs live in mobile-tab-bar instead */
    .sidebar-tabs { display: none; }

    /* Mobile tab bar */
    .mobile-tab-bar {
        display: flex;
        align-items: center;
        justify-content: center;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 30;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        padding: 0 12px;
        height: calc(48px + env(safe-area-inset-top));
        padding-top: env(safe-area-inset-top);
    }

    .mobile-tab-bar .sidebar-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        position: absolute;
        left: 12px;
        top: auto;
        z-index: auto;
        height: 34px;
        width: 34px;
        padding: 0;
        font-size: 16px;
        flex-shrink: 0;
    }

    .mobile-tabs {
        display: flex;
        gap: 4px;
    }

    .mobile-tab-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        height: 34px;
        padding: 0 20px;
        border: none;
        border-radius: 8px;
        background: none;
        color: var(--text-light);
        font-size: 13px;
        font-family: var(--font-sans);
        font-weight: 500;
        cursor: pointer;
        transition: all 0.15s;
        touch-action: manipulation;
    }

    .mobile-tab-btn:hover {
        background: var(--sidebar-hover);
        color: var(--text);
    }

    .mobile-tab-btn.active {
        background: var(--accent);
        color: white;
    }

    /* Hide sidebar resize handle on mobile */
    .sidebar-resize-handle {
        display: none;
    }

    /* Push messages down for fixed tab bar */
    .messages {
        padding: 12px 12px;
        padding-top: calc(48px + env(safe-area-inset-top) + 8px);
    }

    .message.user { max-width: 90%; }

    /* Input area: spacious Claude-like layout */
    .input-area {
        padding: 0 14px 14px;
        padding-bottom: max(14px, env(safe-area-inset-bottom));
    }

    .input-container {
        border-radius: 20px;
        padding: 10px 14px;
    }

    .input-container textarea {
        font-size: 16px; /* prevents iOS zoom on focus */
        min-height: 36px;
        line-height: 1.6;
    }

    .input-actions {
        gap: 8px;
    }

    .btn-send {
        width: 36px;
        height: 36px;
    }

    .btn-attach, .btn-mic {
        padding: 6px;
    }

    /* Hide desktop model selector on mobile — it's in the top bar */
    .input-actions select#modelSelect {
        display: none;
    }

    /* Mobile model selector in top bar */
    .mobile-model-select {
        position: absolute;
        right: 12px;
        height: 34px;
        padding: 0 18px 0 6px;
        border: 1px solid var(--border);
        border-radius: 6px;
        background: var(--bg);
        color: var(--text-light);
        font-size: 11px;
        font-family: var(--font-sans);
        -webkit-appearance: none;
        appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%235C574F' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 4px center;
    }

    /* Images: constrain to bubble width */
    .message-image {
        max-width: 100%;
        max-height: 160px;
    }

    /* Tables scroll horizontally */
    .message .content table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Code blocks don't overflow */
    .message .content pre {
        font-size: 12px;
    }

    /* Empty state smaller on mobile */
    .empty-state {
        padding: 0 16px;
    }

    .empty-state h3 {
        font-size: 18px;
    }

    .input-footer {
        display: none;
    }

    .sources-panel { font-size: 11px; }
    .source-preview { display: none; }

    .search-confirm { flex-wrap: wrap; gap: 8px; padding: 10px 12px; }
    .search-confirm-icon { display: none; }

    /* Prevent iOS zoom on input focus — all inputs need 16px+ */
    .sidebar-search-input {
        font-size: 16px;
    }

    .playbook-mobile-search-input {
        font-size: 16px;
    }

    .playbook-home-search {
        display: block;
    }

    .playbook-home-search-input {
        font-size: 16px; /* prevent iOS zoom */
    }

    /* Hide separate mobile search — use home search in empty state instead */
    .playbook-mobile-search {
        display: none !important;
    }

    /* Push playbook content down for fixed tab bar */
    .playbook-content {
        padding-top: calc(48px + env(safe-area-inset-top) + 16px);
    }

    .playbook-empty h3 {
        font-size: 18px;
    }

    .pb-tracker-inline-input,
    .pb-tracker-inline-textarea,
    .pb-tracker-create-input,
    .pb-tracker-create-textarea {
        font-size: 16px;
    }

    /* Playbook mobile search visible */
    .playbook-mobile-search {
        display: block;
        padding: 8px 12px;
        padding-top: calc(48px + env(safe-area-inset-top) + 12px);
        flex-shrink: 0;
    }

    /* Playbook content on mobile */
    .playbook-content {
        padding: 16px 12px;
    }

    .pb-editor {
        flex-direction: column;
    }

    .pb-header {
        flex-wrap: wrap;
    }

    .pb-editor textarea,
    .pb-editor-preview {
        min-height: 200px;
    }
}