:root {
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --border-color: #e5e5e5;
    --text-color: #1a1a1a;
    --text-secondary: #666;
    --chat-ai-bg: #f8f9fa;
    --chat-ai-border: #e9ecef;
    --button-secondary-bg: #f0f0f0;
    --button-secondary-color: #666;
    --chat-preview-color: #666;
    --status-in-development-bg: #ffe08a;
    --status-in-development-color: #8b6b00;
    --status-planned-bg: #d1e7dd;
    --status-planned-color: #0f5132;
}

body.dark-mode {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2c2c2c;
    --border-color: #444;
    --text-color: #f0f0f0;
    --text-secondary: #aaa;
    --chat-ai-bg: #3a3a3a;
    --chat-ai-border: #555;
    --button-secondary-bg: #444;
    --button-secondary-color: #f0f0f0;
    --chat-preview-color: #aaa;
    --status-in-development-bg: #a67d00;
    --status-in-development-color: #fffacd;
    --status-planned-bg: #0d3625;
    --status-planned-color: #c3e6cb;
}

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

body {
    font-family: 'Cal Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-color);
    height: 100vh;
    overflow: hidden;
}

#app {
    display: grid;
    grid-template-areas: 
        "header header"
        "sidebar main";
    grid-template-columns: 280px 1fr;
    grid-template-rows: 60px 1fr;
    height: 100vh;
}

/* Header */
.header {
    grid-area: header;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
    display: flex;
    align-items: center;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.branding-text {
    font-size: 10px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.model-selector {
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
}

.model-selector select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-color);
    font-size: 14px;
    min-width: 150px;
}

/* New style for model description */
.model-description {
    font-size: 11px;
    color: var(--text-secondary);
    max-width: 200px;
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    text-decoration: underline dotted;
    transition: color 0.2s;
    position: absolute;
    top: 50%;
    left: -210px;
    transform: translateY(-50%);
    text-align: right;
    padding-right: 10px;
}

.model-description:hover {
    color: #667eea;
}

.credits-display {
    font-weight: 500;
    color: #667eea;
}

/* Sidebar */
.sidebar {
    grid-area: sidebar;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.sidebar-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.chat-list {
    flex: 1;
    overflow-y: auto;
}

.chat-item {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
    position: relative;
    color: var(--text-color);
}

.chat-item:hover {
    background: var(--button-secondary-bg);
}

.chat-item.active {
    background: #667eea;
    color: white;
}

.chat-title {
    font-weight: 500;
    font-size: 14px;
    margin-bottom: 4px;
}

.chat-preview {
    font-size: 12px;
    color: var(--chat-preview-color);
    opacity: 0.8;
}

.chat-item.active .chat-preview {
    color: rgba(255, 255, 255, 0.8);
}

.delete-chat {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
}

.delete-chat:hover {
    background: rgba(255, 0, 0, 0.1);
    color: red;
}

/* New style for undeletable survey chat item */
.chat-item.survey-chat {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 1px solid #667eea;
    cursor: default;
}

body.dark-mode .chat-item.survey-chat {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
}

.chat-item.survey-chat .delete-chat {
    display: none;
}

.sidebar-footer {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Main Content */
.main-content {
    grid-area: main;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.welcome-message {
    text-align: center;
    margin-top: 100px;
}

.welcome-message h2 {
    font-size: 32px;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.welcome-message p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.getting-started-hint {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

.getting-started-hint strong {
    color: var(--text-color);
}

.message {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    flex-shrink: 0;
}

.message.user .message-avatar {
    background: #667eea;
    color: white;
}

.message.ai .message-avatar {
    background: var(--button-secondary-bg);
    color: var(--text-secondary);
}

.message-content {
    max-width: 70%;
    padding: 16px 20px;
    border-radius: 18px;
    line-height: 1.6;
    font-size: 15px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.message.user .message-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-bottom-right-radius: 6px;
}

.message.ai .message-content {
    background: var(--chat-ai-bg);
    color: var(--text-color);
    border: 1px solid var(--chat-ai-border);
    border-bottom-left-radius: 6px;
}

/* Styling for survey answer display in chat */
.survey-answer-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.survey-answer-item h4 {
    margin-bottom: 10px;
    color: #667eea;
    font-size: 18px;
}

.survey-answer-item p {
    margin-bottom: 8px;
    color: var(--text-color);
    font-size: 14px;
}

.survey-answer-item p strong {
    color: var(--text-secondary);
    margin-right: 5px;
}

.chat-input-container {
    border-top: 1px solid var(--border-color);
    padding: 20px;
}

.model-status {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    text-align: center;
}

.chat-input {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.chat-input input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    outline: none;
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-color);
}

.chat-input input:focus {
    border-color: #667eea;
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5a6fd8;
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--button-secondary-bg);
    color: var(--button-secondary-color);
}

.btn-secondary:hover {
    background: var(--border-color);
    color: var(--text-color);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background: var(--button-secondary-bg);
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    background: #667eea;
    color: white;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    color: var(--text-color);
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 20px;
}

/* Forms */
#signInForm {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#signInForm input {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-secondary);
    color: var(--text-color);
}

/* Model Comparison */
.model-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.model-card {
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
}

.model-card.premium-pro {
    border-color: #667eea;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%;
}

body.dark-mode .model-card.premium-pro {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%;
}

.model-card.platinum {
    border-color: #ffd700;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1) 0%, rgba(218, 165, 32, 0.1) 100%;
    position: relative;
}

body.dark-mode .model-card.platinum {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2) 0%, rgba(218, 165, 32, 0.2) 100%;
}

.model-card.platinum::before {
    content: "⭐";
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 20px;
}

/* Modified to only apply to Platinum Thinking for brain emoji */
.model-card.platinum-thinking::before {
    content: "🧠"; /* Brain emoji for Platinum Thinking */
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 20px;
}

/* New: AI Emotions model card styles */
.model-card.ai-emotions {
    border-color: #e06cf0; /* A soft pink/purple border */
    background: linear-gradient(135deg, rgba(224, 108, 240, 0.1) 0%, rgba(126, 66, 178, 0.1) 100%;
    position: relative;
}

body.dark-mode .model-card.ai-emotions {
    background: linear-gradient(135deg, rgba(224, 108, 240, 0.2) 0%, rgba(126, 66, 178, 0.2) 100%;
}

.model-card.ai-emotions::before {
    content: "❤️"; /* Heart emoji for emotions */
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 20px;
}

/* New: Titanium Prime model card styles (replaces Platinum V2 visuals) */
.model-card.titanium-prime {
    border-color: #ff6b35; /* Orange-red border for Titanium Prime */
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.06) 0%, rgba(255, 140, 0, 0.06) 100%);
    position: relative;
}

.model-card.titanium-prime::before {
    content: "🔩"; /* Small emblem for Titanium Prime */
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 20px;
}

/* New: Platinum V2 model card styles */
.model-card.platinum-v2 {
    border-color: #ff6b35; /* Orange-red border for V2 */
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(255, 140, 0, 0.1) 100%;
    position: relative;
}

body.dark-mode .model-card.platinum-v2 {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.2) 0%, rgba(255, 140, 0, 0.2) 100%;
}

.model-card.platinum-v2::before {
    content: "🚀"; /* Rocket emoji for V2 speed+intelligence */
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 20px;
}

.model-card.basic-light {
    border-color: #90EE90;
    background: linear-gradient(135deg, rgba(144, 238, 144, 0.1) 0%, rgba(152, 251, 152, 0.1) 100%;
}

body.dark-mode .model-card.basic-light {
    background: linear-gradient(135deg, rgba(144, 238, 144, 0.2) 0%, rgba(152, 251, 152, 0.2) 100%;
}

.model-card.basic-light-v2 {
    border-color: #00CED1;
    background: linear-gradient(135deg, rgba(0, 206, 209, 0.1) 0%, rgba(64, 224, 208, 0.1) 100%;
}

body.dark-mode .model-card.basic-light-v2 {
    background: linear-gradient(135deg, rgba(0, 206, 209, 0.2) 0%, rgba(64, 224, 208, 0.2) 100%;
}

.model-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-color);
}

.model-card p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 14px;
}

.model-card ul {
    list-style: none;
}

.model-card li {
    padding: 4px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.model-card li::before {
    content: "✓";
    color: #667eea;
    font-weight: bold;
    margin-right: 8px;
}

/* Credit Options */
.credit-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.credit-option {
    text-align: center;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
}

.credit-option h3 {
    margin-bottom: 10px;
}

.credit-option p {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

/* Account Info */
.account-info p {
    margin-bottom: 10px;
}

.account-info span {
    font-weight: 600;
    color: var(--text-color);
}

/* Generated Images */
.generated-image {
    margin-top: 10px;
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.image-caption, .video-caption {
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}

/* Video Generation Styles */
.video-frames {
    margin-top: 10px;
}

.video-frames h4 {
    margin-bottom: 10px;
    color: var(--text-color);
    font-size: 16px;
}

.frame-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    margin-bottom: 10px;
}

.video-frame {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Character Modal Styles */
.character-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 15px;
    background: var(--bg-secondary);
}

.character-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
}

.character-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 24px;
}

.character-info {
    flex: 1;
}

.character-info h4 {
    margin-bottom: 5px;
    color: var(--text-color);
}

.character-info p {
    color: var(--text-secondary);
    font-size: 14px;
}

.character-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.character-actions .btn {
    font-size: 12px;
    padding: 6px 12px;
}

/* Character Creation Form */
.character-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.character-form input,
.character-form textarea {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    background: var(--bg-secondary);
    color: var(--text-color);
}

.character-form textarea {
    min-height: 80px;
    resize: vertical;
}

#characterBtn, #videoBtn {
    display: none;
    padding: 8px 12px;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin-left: 5px;
}

#characterBtn:hover, #videoBtn:hover {
    opacity: 0.9;
}

/* Survey Modals */
.survey-intro {
    text-align: center;
    margin-bottom: 20px;
    font-size: 15px;
    color: var(--text-secondary);
}

.survey-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
}

.survey-options .btn {
    width: 100%;
    max-width: 300px;
    padding: 15px;
    font-size: 16px;
}

.modal-body form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.modal-body form label {
    font-weight: 600;
    margin-bottom: 5px;
    display: block;
}

.modal-body form input[type="text"],
.modal-body form input[type="email"],
.modal-body form input[type="password"],
.modal-body form select,
.modal-body form textarea {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    background: var(--bg-secondary);
    color: var(--text-color);
    width: 100%;
    box-sizing: border-box;
}

.modal-body form input[type="checkbox"] {
    margin-right: 8px;
}

.modal-body form input[type="range"] {
    width: calc(100% - 40px);
    vertical-align: middle;
}

.modal-body form output {
    display: inline-block;
    vertical-align: middle;
    width: 30px;
    text-align: right;
}

/* Canvas input labels for clarity */
.input-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-right: 6px;
}

.chip {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.chip-chat {
    color: #0b6efb;
    border-color: rgba(11,110,251,0.3);
    background: rgba(11,110,251,0.06);
}

.chip-build {
    color: #0f9d58;
    border-color: rgba(15,157,88,0.3);
    background: rgba(15,157,88,0.06);
}

.auto-fix-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    user-select: none;
}

.auto-fix-toggle input[type="checkbox"] {
    transform: translateY(1px);
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Gallery Styles */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.gallery-item {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-secondary);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.gallery-item img, .gallery-item video {
    width: 100%;
    height: 150px;
    object-fit: cover;
    display: block;
    cursor: pointer;
}

.gallery-item-info {
    padding: 10px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.gallery-item-info p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    flex-grow: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.gallery-item-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 10px;
}

.gallery-item-actions .btn {
    font-size: 12px;
    padding: 6px 10px;
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
    font-size: 16px;
}

/* Roadmap Modal Styles */
.roadmap-section {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px dashed var(--border-color);
}

.roadmap-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.roadmap-section h3 {
    font-size: 22px;
    color: #667eea;
    margin-bottom: 15px;
    text-align: center;
    font-weight: 700;
}

.roadmap-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 15px 20px;
    margin-bottom: 15px;
    position: relative;
    overflow: hidden;
}

.roadmap-item h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 600;
}

.roadmap-item p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.status-tag {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-tag.in-development {
    background-color: var(--status-in-development-bg);
    color: var(--status-in-development-color);
}

.status-tag.planned {
    background-color: var(--status-planned-bg);
    color: var(--status-planned-color);
}

.status-tag.almost-complete {
    background-color: #90EE90;
    color: #006400;
}

body.dark-mode .status-tag.almost-complete {
    background-color: #228B22;
    color: #98FB98;
}

/* Canvas Mode two-pane layout */
.canvas-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 16px;
    min-height: 70vh;
}

@media (max-width: 900px) {
    .canvas-layout {
        grid-template-columns: 1fr;
    }
}

/* Canvas AI Chat styles */
.canvas-chat-panel {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    overflow: hidden;
    min-height: 400px;
}

.canvas-chat-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.canvas-chat-title {
    font-weight: 700;
    color: var(--text-color);
}

.canvas-chat-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
}

.canvas-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.canvas-chat-msg {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    max-width: 100%;
}

.canvas-chat-msg.user .bubble {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 14px 4px 14px 14px;
}

.canvas-chat-msg.ai .bubble {
    background: var(--chat-ai-bg);
    color: var(--text-color);
    border: 1px solid var(--chat-ai-border);
    border-radius: 4px 14px 14px 14px;
}

.canvas-chat-msg .avatar {
    width: 28px; height: 28px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700;
    background: var(--button-secondary-bg); color: var(--text-secondary);
    flex-shrink: 0;
}

.canvas-chat-msg.user .avatar { background: #667eea; color:#fff; }

.canvas-chat-msg .bubble {
    padding: 10px 12px;
    font-size: 14px;
    line-height: 1.5;
    max-width: 100%;
    overflow-x: auto;
}

.canvas-chat-msg .bubble pre, .canvas-chat-msg .bubble code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    font-size: 12px;
    background: rgba(0,0,0,0.06);
    color: inherit;
    padding: 6px;
    border-radius: 6px;
    display: block;
    overflow: auto;
}

.canvas-chat-inputbar {
    display: flex;
    gap: 8px;
    padding: 10px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.canvas-chat-inputbar input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-color);
    font-size: 14px;
}

.canvas-hints {
    padding: 8px 12px 12px;
    font-size: 12px;
    color: var(--text-secondary);
}

.canvas-hints ul { padding-left: 16px; margin-top: 6px; }

.canvas-hints li { margin: 4px 0; }

/* Responsive */
@media (max-width: 768px) {
    #app {
        grid-template-areas: 
            "header"
            "main";
        grid-template-columns: 1fr;
        grid-template-rows: 60px 1fr;
    }

    .sidebar {
        position: fixed;
        left: -280px;
        top: 60px;
        height: calc(100vh - 60px);
        z-index: 100;
        transition: left 0.3s;
    }

    .sidebar.active {
        left: 0;
    }

    .header-controls {
        gap: 10px;
    }

    .model-selector {
        flex-direction: column;
        align-items: flex-start;
    }

    .message-content {
        max-width: 85%;
    }

    .typing-speed-control {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 15px;
        padding: 10px 20px 0;
        justify-content: center;
    }

    .typing-speed-control label {
        font-size: 14px;
        color: var(--text-secondary);
    }

    .typing-speed-control input[type="range"] {
        flex-grow: 1;
        max-width: none;
        -webkit-appearance: none;
        width: 100%;
        height: 8px;
        background: var(--border-color);
        border-radius: 5px;
        outline: none;
        opacity: 0.7;
        transition: opacity .2s;
    }

    .typing-speed-control input[type="range"]::-webkit-slider-thumb {
        -webkit-appearance: none;
        appearance: none;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        background: #667eea;
        cursor: pointer;
        box-shadow: 0 0 5px rgba(0,0,0,0.2);
    }

    .typing-speed-control input[type="range"]::-moz-range-thumb {
        width: 20px;
        height: 20px;
        border-radius: 50%;
        background: #667eea;
        cursor: pointer;
        box-shadow: 0 0 5px rgba(0,0,0,0.2);
    }

    .typing-speed-control input[type="range"]:hover {
        opacity: 1;
    }

    .typing-speed-control #typingSpeedValue {
        font-size: 14px;
        color: var(--text-secondary);
        min-width: 45px;
        text-align: right;
        align-self: flex-end;
    }
}

.update-badge {
    display: inline-block;
    margin-left: 8px;
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 700;
    color: white;
    background: #0b6efb;
    border-radius: 999px;
    vertical-align: middle;
    box-shadow: 0 1px 4px rgba(11,110,251,0.12);
}

/* Small informational note shown at top of Canvas modal */
.canvas-update-note {
    background: rgba(11,110,251,0.06);
    border: 1px solid rgba(11,110,251,0.12);
    color: var(--text-secondary);
    padding: 8px 12px;
    border-radius: 8px;
    margin: 12px 0;
    font-size: 13px;
}