/* TalkTrough Stylesheet */
/* Based on docs/styleguide.md */

/* === Variables === */
:root {
    --color-primary: #5271ff;
    --color-primary-hover: #3d5bd9;
    --color-primary-light: #e8ecff;
    --color-danger: #dc3545;
    --color-danger-hover: #c82333;
    --color-success: #28a745;
    --color-text: #333333;
    --color-text-muted: #6c757d;
    --color-background: #f8f9fa;
    --color-card: #ffffff;
    --color-border: #dee2e6;

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* === Layout === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.page {
    min-height: 100vh;
}

/* === Navigation === */
.navbar {
    background-color: var(--color-card);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: var(--space-md) 0;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    color: var(--color-text);
    font-size: 1.5rem;
    font-weight: 600;
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.navbar-text {
    color: var(--color-text-muted);
}

/* === Buttons === */
.btn {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.15s ease-in-out;
    text-align: center;
}

.btn:hover {
    text-decoration: none;
}

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

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

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

.btn-outline:hover {
    background-color: var(--color-primary-light);
}

.btn-danger {
    background-color: var(--color-danger);
    color: white;
}

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

.btn-sm {
    padding: var(--space-xs) 0.75rem;
    font-size: 0.8125rem;
}

/* === Cards === */
.card {
    background: var(--color-card);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    padding: var(--space-lg);
}

.card-shadow {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border: none;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.card-text {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
}

/* === Grid === */
.grid {
    display: grid;
    gap: var(--space-md);
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* === Alerts === */
.alert {
    padding: 0.75rem var(--space-md);
    border-radius: 4px;
    margin-bottom: var(--space-md);
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* === Forms === */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 500;
    color: var(--color-text);
}

.form-control {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
}

.form-control:focus {
    outline: 2px solid var(--color-primary);
    border-color: var(--color-primary);
}

/* === Utilities === */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }

.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }

.d-inline { display: inline; }
.d-flex { display: flex; }
.gap-1 { gap: var(--space-sm); }
.gap-2 { gap: var(--space-md); }

/* === Page specific === */
.main-content {
    padding: var(--space-xl) 0;
}

.page-header {
    margin-bottom: var(--space-lg);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.page-description {
    color: var(--color-text-muted);
}

/* === Auth Pages === */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.auth-card {
    background: var(--color-card);
    padding: var(--space-xl);
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.auth-title {
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--color-text);
    font-size: 1.5rem;
}

.auth-link {
    text-align: center;
}

/* === Checkbox === */
.form-check {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-md);
}

.form-check input {
    margin-right: var(--space-sm);
}

/* === Select === */
.form-select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background-color: var(--color-card);
}

.form-select:focus {
    outline: 2px solid var(--color-primary);
    border-color: var(--color-primary);
}

/* === Error List === */
.error-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

/* === Full Width Button === */
.btn-block {
    width: 100%;
}

/* === Project Cards === */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.project-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--space-lg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: box-shadow 0.2s;
}

.project-card:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.project-card h3 {
    margin: 0 0 var(--space-sm) 0;
    color: var(--color-text);
}

.project-card p {
    color: var(--color-text-muted);
    margin: var(--space-sm) 0;
}

.project-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
    color: var(--color-text-muted);
}

.empty-state h3 {
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

/* === Page Header with Actions === */
.page-header-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

/* === Breadcrumb === */
.breadcrumb {
    margin-bottom: var(--space-md);
}

.breadcrumb a {
    color: var(--color-primary);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* === Narrow Container === */
.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* === Form Help Text === */
.form-text {
    display: block;
    margin-top: var(--space-xs);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* === Textarea === */
textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

/* === Form Actions === */
.form-actions {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

/* === Section Title === */
.section-title {
    margin-bottom: var(--space-md);
    color: var(--color-text);
    font-size: 1.1rem;
}

/* === Project Meta === */
.project-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin: var(--space-xl) 0;
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: 4px;
}

.meta-item {
    display: flex;
    flex-direction: column;
}

.meta-label {
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.meta-value {
    color: var(--color-text-muted);
}

/* === Evaluation Criteria === */
.evaluation-criteria {
    margin-top: var(--space-xl);
    padding: var(--space-md);
    background: var(--color-background);
    border-left: 4px solid var(--color-primary);
}

.evaluation-criteria h4 {
    margin-top: 0;
    margin-bottom: var(--space-sm);
}

/* === Disabled Input === */
.form-control:disabled,
.form-control[disabled] {
    background-color: var(--color-background);
    color: var(--color-text-muted);
    cursor: not-allowed;
}

/* === Versions Grid === */
.versions-grid {
    display: grid;
    gap: var(--space-lg);
}

.version-card {
    background: var(--color-card);
    border-radius: 8px;
    padding: var(--space-lg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border-left: 4px solid var(--color-border);
}

.version-card.active {
    border-left-color: var(--color-success);
}

.version-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.version-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.version-title h3 {
    margin: 0;
    color: var(--color-text);
}

.version-meta {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

.version-meta div {
    margin-bottom: var(--space-sm);
}

.version-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* === Badges === */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-success {
    background-color: var(--color-success);
    color: white;
}

.badge-muted {
    background-color: var(--color-text-muted);
    color: white;
}

.badge-primary {
    background-color: var(--color-primary);
    color: white;
}

/* === Mode Tags === */
.mode-tag {
    display: inline-block;
    background-color: #e9ecef;
    color: #495057;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-right: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.modes-list {
    margin-bottom: var(--space-md);
}

.modes-list h4 {
    margin: 0 0 var(--space-sm) 0;
    color: #495057;
    font-size: 0.9rem;
}

/* === Mode Section (detail view) === */
.modes-section {
    background: var(--color-card);
    padding: var(--space-xl);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.modes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.modes-header h3 {
    margin: 0;
    color: var(--color-text);
}

.mode-card {
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    background-color: var(--color-background);
}

.mode-card:last-child {
    margin-bottom: 0;
}

.mode-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.mode-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.mode-title h4 {
    margin: 0;
    color: #495057;
}

.mode-order {
    background-color: var(--color-primary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
}

.mode-prompt {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: var(--space-md);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* === Mode Editor (create/edit) === */
.modes-editor {
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: var(--space-md);
    background-color: var(--color-background);
}

.mode-item {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: var(--space-md);
    margin-bottom: var(--space-md);
    position: relative;
}

.mode-item:last-child {
    margin-bottom: 0;
}

.mode-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.mode-item-header h4 {
    margin: 0;
    color: #495057;
}

/* === Tools Info === */
.tools-info {
    background-color: #e7f3ff;
    border: 1px solid #b3d7ff;
    border-radius: 4px;
    padding: var(--space-md);
    margin-top: var(--space-md);
}

.tools-info h5 {
    margin: 0 0 var(--space-sm) 0;
    color: #0056b3;
}

.tool-tag {
    display: inline-block;
    background-color: var(--color-primary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-right: var(--space-sm);
    margin-bottom: var(--space-xs);
}

/* === Status Badge === */
.status-badge {
    background-color: var(--color-success);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

/* === Text Colors === */
.text-danger {
    color: var(--color-danger);
}

.text-success {
    color: var(--color-success);
}

/* === Required Indicator === */
.required {
    color: var(--color-danger);
}

/* === Remove Button === */
.btn-remove {
    background: var(--color-danger);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    cursor: pointer;
}

/* === Success Button === */
.btn-success {
    background-color: var(--color-success);
    color: white;
}

.btn-success:hover {
    background-color: #218838;
}

/* === Scenarios Grid === */
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.scenario-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--space-lg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: box-shadow 0.2s;
}

.scenario-card:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.scenario-card h3 {
    margin: 0 0 var(--space-md) 0;
    color: var(--color-text);
}

.scenario-meta {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin: var(--space-sm) 0;
}

.scenario-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.persona-preview {
    background: var(--color-background);
    padding: 0.75rem;
    border-radius: 4px;
    border-left: 4px solid var(--color-primary);
    margin: var(--space-md) 0;
    font-style: italic;
    font-size: 0.9rem;
}

/* === Scenario Detail === */
.scenario-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-xl);
}

.field-group {
    margin-bottom: var(--space-xl);
}

.field-label {
    font-weight: bold;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
    display: block;
}

.field-content {
    background: var(--color-background);
    padding: var(--space-md);
    border-radius: 4px;
    border: 1px solid #e9ecef;
    line-height: 1.6;
}

/* === Meta Grid === */
.meta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.meta-grid-item {
    background: var(--color-background);
    padding: var(--space-md);
    border-radius: 4px;
    border: 1px solid #e9ecef;
}

.meta-grid-label {
    font-weight: bold;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.meta-grid-value {
    color: var(--color-text);
    margin-top: var(--space-xs);
}

/* === Character Counter === */
.char-counter {
    text-align: right;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

/* === Playground Chat Interface === */
.playground-container {
    height: calc(100vh - 140px);
    display: flex;
    flex-direction: column;
}

.playground-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.playground-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    flex: 1;
    min-height: 0;
}

.playground-layout.full-width {
    grid-template-columns: 1fr;
}

/* Chat Panel */
.chat-panel {
    display: flex;
    flex-direction: column;
    background: var(--color-card);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    min-height: 0;
}

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

.chat-header h3 {
    margin: 0;
    font-size: 1rem;
}

.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Messages */
.message {
    max-width: 85%;
    padding: var(--space-md);
    border-radius: 12px;
    line-height: 1.6;
}

.message-user {
    align-self: flex-end;
    background: var(--color-primary);
    color: white;
    border-bottom-right-radius: 4px;
}

.message-assistant {
    align-self: flex-start;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-bottom-left-radius: 4px;
}

.message-content {
    word-wrap: break-word;
}

.message-content p {
    margin: 0 0 var(--space-sm) 0;
}

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

.message-content pre {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    padding: var(--space-sm);
    border-radius: 4px;
    overflow-x: auto;
    font-size: 0.9em;
    margin: var(--space-sm) 0;
}

.message-content code {
    background: rgba(0,0,0,0.05);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
}

.message-user .message-content code {
    background: rgba(255,255,255,0.2);
}

.message-content ul, .message-content ol {
    margin: var(--space-sm) 0;
    padding-left: var(--space-lg);
}

.message-content blockquote {
    border-left: 3px solid var(--color-primary);
    margin: var(--space-sm) 0;
    padding-left: var(--space-md);
    color: var(--color-text-muted);
}

/* Chat Input */
.chat-input-container {
    padding: var(--space-md);
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: var(--space-sm);
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    resize: none;
    min-height: 44px;
    max-height: 150px;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: 22px;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.5;
}

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

.chat-input:disabled {
    background: var(--color-background);
    cursor: not-allowed;
}

.chat-send-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
    flex-shrink: 0;
}

.chat-send-btn:hover:not(:disabled) {
    background: var(--color-primary-hover);
}

.chat-send-btn:disabled {
    background: var(--color-text-muted);
    cursor: not-allowed;
}

/* Document Panel */
.document-panel {
    display: flex;
    flex-direction: column;
    background: var(--color-card);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    min-height: 0;
}

/* Mode Bar */
.mode-bar {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.15s;
}

.mode-bar:hover {
    background: var(--color-background);
}

.mode-current {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.mode-indicator {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
}

.mode-arrow {
    color: var(--color-text-muted);
    transition: transform 0.2s;
}

/* Mode Bar Inline (when no document panel) */
.mode-bar-inline {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-background);
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: background 0.15s;
}

.mode-bar-inline:hover {
    background: var(--color-border);
}

/* Document Content */
.document-content {
    flex: 1;
    padding: var(--space-lg);
    overflow-y: auto;
}

.document-empty {
    color: var(--color-text-muted);
    text-align: center;
    padding: var(--space-xl);
    font-style: italic;
}

.document-text {
    word-wrap: break-word;
    line-height: 1.5;
}

.document-text p {
    margin: 0 0 var(--space-sm) 0;
}

.document-text p:last-child {
    margin-bottom: 0;
}

.document-text h1, .document-text h2, .document-text h3 {
    margin: var(--space-md) 0 var(--space-sm) 0;
    line-height: 1.3;
}

.document-text h1:first-child, .document-text h2:first-child, .document-text h3:first-child {
    margin-top: 0;
}

.document-text ul, .document-text ol {
    margin: var(--space-sm) 0;
    padding-left: var(--space-lg);
}

.document-text pre {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    padding: var(--space-sm);
    border-radius: 4px;
    overflow-x: auto;
    font-size: 0.9em;
    margin: var(--space-sm) 0;
}

.document-text code {
    background: rgba(0,0,0,0.05);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
}

/* Mode Overlay */
.mode-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}

.mode-overlay.active {
    display: flex;
}

.mode-list-container {
    background: var(--color-card);
    border-radius: 12px;
    padding: var(--space-xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.mode-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.mode-list-header h3 {
    margin: 0;
}

.mode-close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-muted);
    padding: var(--space-xs);
}

.mode-list-item {
    padding: var(--space-md);
    border-radius: 8px;
    margin-bottom: var(--space-sm);
    border: 2px solid var(--color-border);
    background: var(--color-background);
}

.mode-list-item:last-child {
    margin-bottom: 0;
}

.mode-list-item.active {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.mode-list-item h4 {
    margin: 0 0 var(--space-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.mode-list-item p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Chat Loading */
.chat-loading {
    display: flex;
    gap: 4px;
    padding: var(--space-md);
    align-self: flex-start;
}

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

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

@keyframes chatBounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

/* Chat Error */
.chat-error {
    background: #f8d7da;
    color: #721c24;
    padding: var(--space-md);
    border-radius: 8px;
    margin: var(--space-md);
    text-align: center;
}

/* === Diagrams === */
.diagram-container {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin: var(--space-md) 0;
    overflow: hidden;
}

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

.diagram-name {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.diagram-open-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    font-size: 1rem;
    padding: var(--space-xs);
    transition: color 0.15s;
}

.diagram-open-btn:hover {
    color: var(--color-primary);
}

.diagram-svg {
    padding: var(--space-md);
    overflow: auto;
}

.diagram-svg svg {
    max-width: 100%;
    height: auto;
}

.diagram-missing {
    color: var(--color-text-muted);
    font-style: italic;
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: 4px;
    margin: var(--space-md) 0;
}

.diagram-error {
    color: var(--color-danger);
    padding: var(--space-md);
    background: #f8d7da;
    border-radius: 4px;
    font-size: 0.875rem;
}

/* === Lists in Document === */
.list-container {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin: var(--space-md) 0;
    overflow: hidden;
}

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

.list-name {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.list-progress {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    background: var(--color-card);
    padding: 2px 8px;
    border-radius: 10px;
}

.list-items {
    list-style: none;
    margin: 0;
    padding: var(--space-sm);
}

.list-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-radius: 4px;
    transition: background 0.15s;
}

.list-item.current {
    background: var(--color-primary-light);
}

.list-item.completed {
    opacity: 0.7;
}

.list-item-checkbox {
    flex-shrink: 0;
    color: var(--color-text-muted);
}

.list-item.completed .list-item-checkbox {
    color: var(--color-success);
}

.list-item-content {
    flex: 1;
}

.list-item.completed .list-item-content {
    text-decoration: line-through;
}

.list-item-result {
    color: var(--color-primary);
    font-size: 0.875rem;
}

.list-missing {
    color: var(--color-text-muted);
    font-style: italic;
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: 4px;
    margin: var(--space-md) 0;
}

/* === Screenflows === */
.screenflow-container {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin: var(--space-md) 0;
    overflow: hidden;
}

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

.screenflow-name {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.screenflow-open-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    font-size: 1rem;
    padding: var(--space-xs);
    transition: color 0.15s;
}

.screenflow-open-btn:hover {
    color: var(--color-primary);
}

.screenflow-svg {
    padding: var(--space-md);
    overflow: auto;
    background: #f0f4f8;
}

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

.screenflow-missing {
    color: var(--color-text-muted);
    font-style: italic;
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: 4px;
    margin: var(--space-md) 0;
}

/* === Help Button === */
.help-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: background 0.15s, transform 0.15s;
}

.help-btn:hover {
    background: var(--color-primary-hover);
    transform: scale(1.1);
    text-decoration: none;
}

/* === Welcome Page === */
.welcome-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.welcome-header {
    padding: var(--space-md) 0;
    background: var(--color-card);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.welcome-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.welcome-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
}

.welcome-hero {
    text-align: center;
    max-width: 600px;
}

.welcome-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.welcome-tagline {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
    line-height: 1.4;
}

.welcome-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-xl);
}

.welcome-actions .btn {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
}

.welcome-footer {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    width: 100%;
}

.welcome-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    max-width: 900px;
    margin: var(--space-xl) auto 0;
    padding: 0 var(--space-md);
}

.welcome-feature {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--space-lg);
}

.welcome-feature h3 {
    font-size: 1.1rem;
    color: var(--color-text);
    margin: 0 0 var(--space-sm) 0;
}

.welcome-feature p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0 0 var(--space-sm) 0;
}

.welcome-feature-list {
    margin: 0;
    padding-left: var(--space-md);
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

.welcome-feature-list li {
    margin-bottom: var(--space-xs);
}

/* === Learn Page === */
.learn-page {
    min-height: 100vh;
}

.learn-header {
    padding: var(--space-md) 0;
    background: var(--color-card);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.learn-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.learn-content {
    padding: var(--space-xl) 0;
}

.learn-section {
    max-width: 800px;
    margin: 0 auto var(--space-xl);
    padding: 0 var(--space-md);
}

.learn-section h2 {
    font-size: 1.75rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-primary);
}

.learn-section h3 {
    font-size: 1.25rem;
    color: var(--color-text);
    margin: var(--space-lg) 0 var(--space-sm);
}

.learn-section p {
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.learn-section ul {
    margin: var(--space-md) 0;
    padding-left: var(--space-lg);
}

.learn-section li {
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

.learn-diagram {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--space-lg);
    margin: var(--space-lg) 0;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    overflow-x: auto;
    white-space: pre;
}

.learn-callout {
    background: var(--color-primary-light);
    border-left: 4px solid var(--color-primary);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-lg) 0;
    border-radius: 0 8px 8px 0;
}

.learn-callout p {
    margin: 0;
    font-style: italic;
}

.learn-glossary {
    background: var(--color-background);
    border-radius: 8px;
    padding: var(--space-lg);
}

.learn-glossary dt {
    font-weight: 600;
    color: var(--color-text);
    margin-top: var(--space-md);
}

.learn-glossary dt:first-child {
    margin-top: 0;
}

.learn-glossary dd {
    color: var(--color-text-muted);
    margin: var(--space-xs) 0 0 0;
}

.learn-cta {
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-card);
    border-radius: 8px;
    margin-top: var(--space-xl);
}

/* Illustrated sections - alternating image left/right */
.learn-section-illustrated {
    display: flex;
    gap: var(--space-xl);
    align-items: center;
    max-width: 1000px;
    margin: 0 auto var(--space-xl);
    padding: 0 var(--space-md);
}

.learn-section-illustrated.image-left {
    flex-direction: row;
}

.learn-section-illustrated.image-right {
    flex-direction: row-reverse;
}

.learn-section-illustrated .learn-section-image {
    flex-shrink: 0;
    width: 45%;
    max-width: 400px;
}

.learn-section-illustrated .learn-section-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.learn-section-illustrated .learn-section-text {
    flex: 1;
}

.learn-section-illustrated .learn-section-text h2 {
    font-size: 1.75rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-primary);
}

.learn-section-illustrated .learn-section-text p {
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.learn-section-illustrated .learn-section-text ul {
    margin: var(--space-md) 0;
    padding-left: var(--space-lg);
}

.learn-section-illustrated .learn-section-text li {
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .learn-section-illustrated {
        flex-direction: column !important;
    }

    .learn-section-illustrated .learn-section-image {
        width: 100%;
        max-width: none;
    }
}

/* === Help Page === */
.help-page {
    min-height: 100vh;
}

.help-content {
    padding: var(--space-xl) 0;
}

.help-section {
    max-width: 800px;
    margin: 0 auto var(--space-xl);
    padding: 0 var(--space-md);
    scroll-margin-top: 80px;
}

.help-section h2 {
    font-size: 1.5rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-primary);
}

.help-section h3 {
    font-size: 1.125rem;
    color: var(--color-text);
    margin: var(--space-lg) 0 var(--space-sm);
}

.help-section p {
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.help-section ul, .help-section ol {
    margin: var(--space-md) 0;
    padding-left: var(--space-lg);
}

.help-section li {
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

/* === Templates Section on Projects === */
.section-divider {
    border: none;
    border-top: 2px solid var(--color-border);
    margin: var(--space-xl) 0;
}

.section-header {
    margin-bottom: var(--space-lg);
}

.section-header h2 {
    font-size: 1.25rem;
    color: var(--color-text);
    margin: 0;
}

.section-header p {
    color: var(--color-text-muted);
    margin: var(--space-xs) 0 0;
    font-size: 0.9rem;
}

.template-card {
    background: var(--color-card);
    border: 2px dashed var(--color-border);
    border-radius: 8px;
    padding: var(--space-lg);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.template-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.template-card h3 {
    margin: 0 0 var(--space-sm) 0;
    color: var(--color-text);
}

.template-card p {
    color: var(--color-text-muted);
    margin: var(--space-sm) 0;
    font-size: 0.9rem;
}

.template-badge {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

/* Responsive */
@media (max-width: 900px) {
    .playground-layout {
        grid-template-columns: 1fr;
        height: auto;
    }

    .chat-panel {
        height: 60vh;
    }

    .document-panel {
        height: 40vh;
    }
}