:root, .theme-light { --bg-primary: #ffffff; --bg-secondary: #f3f4f6; --bg-sidebar: #f9fafb; --bg-bubble-user: #2563eb; --bg-bubble-assistant: #f3f4f6; --text-primary: #111827; --text-secondary: #6b7280; --text-on-primary: #ffffff; --border-color: #e5e7eb; --accent-color: #2563eb; --error-color: #dc2626; --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06); } .theme-dark { --bg-primary: #111827; --bg-secondary: #1f2937; --bg-sidebar: #0f172a; --bg-bubble-user: #2563eb; --bg-bubble-assistant: #1f2937; --text-primary: #f9fafb; --text-secondary: #9ca3af; --text-on-primary: #ffffff; --border-color: #374151; --accent-color: #3b82f6; --error-color: #f87171; --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3); } /* * Telerik/Kendo components derive their colors from design tokens defined at * :root by the light theme. Overriding the core tokens on the when dark * mode is active flips the AppBar, Splitter, buttons, dropdowns and dialogs to * dark. The token overrides must live on an ancestor of every component * (including popups appended to ), hence the body.theme-dark scope. */ body.theme-dark { color-scheme: dark; --kendo-color-app-surface: #111827; --kendo-color-on-app-surface: #f9fafb; --kendo-color-surface: #1f2937; --kendo-color-surface-alt: #243042; --kendo-color-base: #1f2937; --kendo-color-base-hover: #2a3647; --kendo-color-base-active: #313f54; --kendo-color-on-base: #f9fafb; --kendo-color-border: rgba(255, 255, 255, 0.12); --kendo-color-border-alt: rgba(255, 255, 255, 0.22); } *, *::before, *::after { box-sizing: border-box; } html, body { margin: 0; padding: 0; height: 100%; /* Lock the outer shell; only the message list scrolls. Prevents the page from scrolling the app bar away when the mobile keyboard opens. */ overflow: hidden; font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; background: var(--bg-primary); color: var(--text-primary); } #app { height: 100%; } .app-loading { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100vh; gap: 1rem; color: var(--text-secondary); } .app-loading-spinner { width: 2.5rem; height: 2.5rem; border: 3px solid var(--border-color); border-top-color: var(--accent-color); border-radius: 50%; animation: spin 0.8s linear infinite; } @keyframes spin { to { transform: rotate(360deg); } } .app-shell { height: 100vh; } .chat-page { --appbar-height: 56px; display: flex; flex-direction: column; height: 100vh; /* Dynamic viewport height keeps the composer reachable above mobile browser chrome. */ height: 100dvh; /* --app-height is driven by the VisualViewport API so the layout shrinks when the on-screen keyboard opens (keeps the composer above the keyboard). */ height: var(--app-height, 100dvh); background: var(--bg-primary); color: var(--text-primary); } .chat-appbar { min-height: var(--appbar-height); } .chat-appbar-title { font-weight: 600; font-size: 1.1rem; margin-left: 0.5rem; } .chat-body { display: flex; flex: 1; min-height: 0; } .chat-sidebar { width: 280px; border-right: 1px solid var(--border-color); background: var(--bg-sidebar); display: flex; flex-direction: column; min-height: 0; } .sidebar-header { padding: 1rem; border-bottom: 1px solid var(--border-color); } .sidebar-list { flex: 1; overflow-y: auto; padding: 0.5rem; } .sidebar-empty { padding: 1rem; color: var(--text-secondary); font-size: 0.875rem; } .sidebar-item { display: flex; align-items: center; gap: 0.25rem; border-radius: 0.5rem; margin-bottom: 0.25rem; } .sidebar-item.active { background: var(--bg-secondary); } .sidebar-item-button { flex: 1; text-align: left; background: none; border: none; padding: 0.625rem 0.75rem; cursor: pointer; color: var(--text-primary); } .sidebar-item-title { display: block; font-size: 0.875rem; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } .sidebar-item-meta { display: block; font-size: 0.75rem; color: var(--text-secondary); } .chat-main { flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--bg-primary); } .chat-error-banner { background: color-mix(in srgb, var(--error-color) 15%, transparent); color: var(--error-color); padding: 0.5rem 1rem; font-size: 0.875rem; border-bottom: 1px solid var(--border-color); } .chat-message-list { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; overscroll-behavior: contain; padding: 1.5rem 1rem; scroll-behavior: smooth; } .chat-empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; text-align: center; color: var(--text-secondary); } .chat-message { display: flex; flex-direction: column; margin-bottom: 1.25rem; max-width: 820px; width: 100%; } .chat-message.user { margin-left: auto; align-items: flex-end; } .chat-message.assistant, .chat-message.system { margin-right: auto; align-items: flex-start; } .chat-bubble { padding: 0.875rem 1rem; border-radius: 1rem; box-shadow: var(--shadow-sm); line-height: 1.6; word-break: break-word; } .chat-message.user .chat-bubble { background: var(--bg-bubble-user); color: var(--text-on-primary); border-bottom-right-radius: 0.25rem; } .chat-message.assistant .chat-bubble, .chat-message.system .chat-bubble { background: var(--bg-bubble-assistant); color: var(--text-primary); border-bottom-left-radius: 0.25rem; } .chat-bubble.error { border: 1px solid var(--error-color); } .chat-message-actions { display: flex; gap: 0.25rem; margin-top: 0.25rem; opacity: 0; transition: opacity 0.15s ease; } .chat-message:hover .chat-message-actions { opacity: 1; } /* Touch devices have no hover, so keep message actions visible. */ @media (hover: none) { .chat-message-actions { opacity: 1; } } .markdown-content pre { background: #0d1117; color: #e6edf3; padding: 1rem; border-radius: 0.5rem; overflow-x: auto; margin: 0.75rem 0; } .markdown-content code { font-family: Consolas, 'Courier New', monospace; font-size: 0.875em; } .markdown-content p { margin: 0 0 0.75rem; } .markdown-content p:last-child { margin-bottom: 0; } .streaming-cursor { display: inline-block; width: 0.5rem; height: 1rem; background: var(--accent-color); margin-left: 2px; animation: blink 1s step-end infinite; vertical-align: text-bottom; } @keyframes blink { 50% { opacity: 0; } } .typing-indicator { display: flex; gap: 0.35rem; padding: 0.5rem 0; } .typing-indicator span { width: 0.5rem; height: 0.5rem; background: var(--text-secondary); border-radius: 50%; animation: bounce 1.2s infinite ease-in-out; } .typing-indicator span:nth-child(2) { animation-delay: 0.15s; } .typing-indicator span:nth-child(3) { animation-delay: 0.3s; } @keyframes bounce { 0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; } 40% { transform: scale(1); opacity: 1; } } .chat-composer { border-top: 1px solid var(--border-color); padding: 1rem; background: var(--bg-secondary); display: flex; flex-direction: column; gap: 0.75rem; } .chat-composer-actions { display: flex; justify-content: flex-end; } .chat-loading-overlay { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.15); display: flex; align-items: center; justify-content: center; z-index: 1000; } #blazor-error-ui { display: none; background: #b32121; color: white; padding: 0.75rem 1rem; position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000; } .chat-splitter { flex: 1; min-height: 0; border: none; } .chat-sidebar-pane, .chat-main-pane { overflow: hidden; } .chat-drawer-backdrop { position: fixed; inset: var(--appbar-height) 0 0 0; background: rgba(0, 0, 0, 0.4); z-index: 90; } .chat-sidebar-mobile { position: fixed; top: var(--appbar-height); left: 0; bottom: 0; z-index: 100; width: 280px; max-width: 85vw; transform: translateX(-100%); transition: transform 0.25s ease; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35); } .chat-sidebar-mobile.open { transform: translateX(0); } .confirm-dialog-message { margin: 0; color: var(--text-primary); line-height: 1.5; } .sidebar-new-btn { width: 100%; } .sidebar-menu-btn { flex-shrink: 0; } .model-selector { min-width: 180px; } .model-selector-label { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; opacity: 0.75; margin-right: 0.5rem; } @media (max-width: 768px) { .chat-message { max-width: 100%; } /* Free up app bar space on narrow screens. */ .chat-appbar-title { display: none; } .model-selector-label { display: none; } /* Override Telerik's inline width so the dropdown fits a phone screen. */ .model-selector { width: 42vw !important; min-width: 0 !important; max-width: 200px; } .chat-message-list { padding: 1rem 0.75rem; } /* Respect the iOS home indicator / safe area at the bottom. */ .chat-composer { padding: 0.75rem; padding-bottom: calc(0.75rem + env(safe-area-inset-bottom)); } /* 16px input font prevents iOS Safari from auto-zooming on focus. */ .chat-input textarea, .chat-input .k-input-inner { font-size: 16px; } } .pwa-update-banner { position: fixed; bottom: calc(1rem + env(safe-area-inset-bottom)); left: 50%; transform: translateX(-50%); z-index: 1100; display: flex; align-items: center; gap: 0.75rem; max-width: calc(100vw - 2rem); padding: 0.6rem 0.75rem 0.6rem 1rem; border-radius: 0.75rem; background: #1f2937; color: #f9fafb; border: 1px solid rgba(255, 255, 255, 0.12); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35); animation: pwa-update-in 0.25s ease-out; } .pwa-update-icon { display: inline-flex; align-items: center; color: #818cf8; } .pwa-update-text { font-size: 0.9rem; white-space: nowrap; } .pwa-update-dismiss { background: transparent; border: none; color: inherit; opacity: 0.6; font-size: 1.25rem; line-height: 1; cursor: pointer; padding: 0 0.25rem; } .pwa-update-dismiss:hover { opacity: 1; } @keyframes pwa-update-in { from { opacity: 0; transform: translateX(-50%) translateY(1rem); } to { opacity: 1; transform: translateX(-50%) translateY(0); } } @media (max-width: 768px) { .pwa-update-text { white-space: normal; } }