/* Industrial ChatGPT-style Interface */

:root {
    /* Light Theme - Monochromatic */
    --light-bg: #ffffff;
    --light-surface: #f7f7f8;
    --light-sidebar: #f7f7f8;
    --light-sidebar-bg-rgb: 247, 247, 248;
    --light-text: #1a1a1a;
    --light-text-muted: #6b7280;
    --light-border: #e5e7eb;
    --light-accent: #333333;
    --light-accent-text: #ffffff;
    --light-shadow: rgba(0, 0, 0, 0.1);
    --light-hover: #f0f0f0;

    /* Dark Theme - Monochromatic */
    --dark-bg: #1a1a1a;
    --dark-surface: #2a2a2a;
    --dark-sidebar: #171717;
    --dark-sidebar-bg-rgb: 23, 23, 23;
    --dark-text: #f8f9fa;
    --dark-text-muted: #9ca3af;
    --dark-border: #374151;
    --dark-accent: #ffffff;
    --dark-accent-text: #1a1a1a;
    --dark-shadow: rgba(0, 0, 0, 0.3);
    --dark-hover: #333333;

    /* Greyscale Theme - Fixed Contrast */
    --grey-bg: #2a2a2a;
    --grey-surface: #3a3a3a;
    --grey-sidebar: #262626;
    --grey-sidebar-bg-rgb: 38, 38, 38;
    --grey-text: #e0e0e0;
    --grey-text-muted: #b0b0b0;
    --grey-border: #4a4a4a;
    --grey-accent: #808080;
    --grey-accent-text: #ffffff;
    --grey-shadow: rgba(0, 0, 0, 0.4);
    --grey-hover: #404040;

    /* Typography - Font Variables */
    --font-mono: "JetBrains Mono", "Consolas", "Monaco", "Menlo", monospace;
    --font-sans: "Inter", "Roboto", "Helvetica Neue", sans-serif;

    /* Font Options */
    --font-jetbrains: "JetBrains Mono", monospace;
    --font-fira: "Fira Code", monospace;
    --font-source-code: "Source Code Pro", monospace;
    --font-roboto-mono: "Roboto Mono", monospace;
    --font-ubuntu-mono: "Ubuntu Mono", monospace;
    --font-inter: "Inter", sans-serif;
    --font-source-sans: "Source Sans Pro", sans-serif;
    --font-roboto: "Roboto", sans-serif;
    --font-open-sans: "Open Sans", sans-serif;
    --font-lato: "Lato", sans-serif;
    --font-poppins: "Poppins", sans-serif;
    --font-nunito: "Nunito", sans-serif;

    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 60px;
    --border-radius: 8px;
    --border-radius-sm: 4px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* Theme Application */
[data-theme="light"] {
    --bg: var(--light-bg);
    --surface: var(--light-surface);
    --sidebar-bg: var(--light-sidebar);
    --sidebar-bg-rgb: var(--light-sidebar-bg-rgb);
    --text: var(--light-text);
    --text-muted: var(--light-text-muted);
    --border: var(--light-border);
    --accent: var(--light-accent);
    --accent-text: var(--light-accent-text);
    --shadow: var(--light-shadow);
    --hover: var(--light-hover);
}

[data-theme="dark"] {
    --bg: var(--dark-bg);
    --surface: var(--dark-surface);
    --sidebar-bg: var(--dark-sidebar);
    --sidebar-bg-rgb: var(--dark-sidebar-bg-rgb);
    --text: var(--dark-text);
    --text-muted: var(--dark-text-muted);
    --border: var(--dark-border);
    --accent: var(--dark-accent);
    --accent-text: var(--dark-accent-text);
    --shadow: var(--dark-shadow);
    --hover: var(--dark-hover);
}

[data-theme="grey"] {
    --bg: var(--grey-bg);
    --surface: var(--grey-surface);
    --sidebar-bg: var(--grey-sidebar);
    --sidebar-bg-rgb: var(--grey-sidebar-bg-rgb);
    --text: var(--grey-text);
    --text-muted: var(--grey-text-muted);
    --border: var(--grey-border);
    --accent: var(--grey-accent);
    --accent-text: var(--grey-accent-text);
    --shadow: var(--grey-shadow);
    --hover: var(--grey-hover);
}

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

body {
    font-family: var(--font-sans);
    background: transparent;
    color: var(--text);
    line-height: 1.5;
    font-weight: 400;
    transition:
        background-color var(--transition-normal),
        color var(--transition-normal);
    overflow: hidden;
}

/* App Layout */
.app {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-normal);
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(var(--sidebar-bg-rgb), 0.8);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar-header {
    display: flex;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    min-height: 60px;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    margin-right: 12px;
}

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

.sidebar-toggle-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-normal);
}

.sidebar.collapsed .sidebar-toggle-icon {
    transform: rotate(180deg);
}

.sidebar-title {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
    opacity: 1;
    transition: opacity var(--transition-normal);
    overflow: hidden;
    white-space: nowrap;
}

.sidebar.collapsed .sidebar-title {
    opacity: 0;
}

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

.title-highlight {
    color: var(--accent);
}

.sidebar-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Navigation */
.sidebar-nav {
    padding: 16px 8px;
    flex: 1;
}

.nav-section {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-muted);
}

.nav-item:hover {
    background: var(--hover);
    color: var(--text);
}

.nav-item.active {
    background: var(--accent);
    color: var(--accent-text);
}

.nav-icon {
    width: 18px;
    height: 18px;
    margin-right: 12px;
    flex-shrink: 0;
}

.sidebar.collapsed .nav-icon {
    margin-right: 0;
}

.nav-label {
    font-size: 14px;
    font-weight: 500;
    opacity: 1;
    transition: opacity var(--transition-normal);
    overflow: hidden;
    white-space: nowrap;
}

.sidebar.collapsed .nav-label {
    opacity: 0;
}

/* Sessions Section */
.sidebar-section {
    border-top: 1px solid var(--border);
    padding: 12px 8px;
    max-height: 300px;
    overflow-y: hidden;
    display: flex;
    flex-direction: column;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
    padding: 0 4px;
}

.section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
    opacity: 1;
    transition: opacity var(--transition-normal);
}

.sidebar.collapsed .section-title {
    opacity: 0;
}

.section-refresh {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    width: 20px;
    height: 20px;
}

.section-refresh:hover {
    background: var(--hover);
    color: var(--text);
}

.section-refresh svg {
    width: 12px;
    height: 12px;
}

.sessions-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
    max-height: 250px;
    padding-right: 4px;
}

.sessions-list::-webkit-scrollbar {
    width: 4px;
}

.sessions-list::-webkit-scrollbar-track {
    background: transparent;
}

.sessions-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

.sessions-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.sessions-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    color: var(--text-muted);
    font-size: 12px;
}

.session-item {
    display: flex;
    align-items: center;
    padding: 8px 6px;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-muted);
    position: relative;
    min-height: 36px;
}

.session-item:hover {
    background: var(--hover);
    color: var(--text);
}

.session-item.active {
    background: var(--accent);
    color: var(--accent-text);
}

.session-item.active .session-menu-btn {
    color: var(--accent-text);
}

.session-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.session-title {
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}

.session-meta {
    font-size: 10px;
    color: inherit;
    opacity: 0.7;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-participants {
    display: flex;
    align-items: center;
    gap: 2px;
}

.participant-indicator {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.6;
}

.session-menu-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-fast);
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.session-item:hover .session-menu-btn {
    opacity: 1;
}

.session-menu-btn:hover {
    background: rgba(var(--text-rgb, 255, 255, 255), 0.1);
}

.session-menu-btn svg {
    width: 12px;
    height: 12px;
}

.sidebar.collapsed .sidebar-section {
    display: none;
}

/* Session Context Menu */
.session-context-menu {
    position: fixed;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow);
    padding: 4px;
    z-index: 1000;
    min-width: 120px;
    display: none;
}

.session-context-menu.show {
    display: block;
}

.context-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text);
    font-size: 13px;
}

.context-menu-item:hover {
    background: var(--hover);
}

.context-menu-item.context-menu-danger {
    color: #ef4444;
}

.context-menu-item.context-menu-danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.context-menu-item svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: var(--surface);
    border-radius: 12px;
    box-shadow: 0 8px 32px var(--shadow);
    max-width: 400px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    animation: modalSlideIn 0.2s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 0;
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px;
    margin-bottom: 20px;
}

.modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--hover);
    color: var(--text);
}

.modal-close svg {
    width: 18px;
    height: 18px;
}

.modal-body {
    padding: 0 24px 20px;
}

.modal-body p {
    margin: 0 0 16px;
    color: var(--text-muted);
    line-height: 1.5;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
}

.form-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    transition: all var(--transition-fast);
    box-sizing: border-box;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(var(--accent-rgb, 51, 51, 51), 0.1);
}

.session-delete-info {
    background: var(--hover);
    padding: 12px;
    border-radius: 6px;
    margin-top: 12px;
}

.session-delete-info strong {
    display: block;
    color: var(--text);
    margin-bottom: 4px;
}

.session-delete-info span {
    font-size: 12px;
    color: var(--text-muted);
}

.modal-footer {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    padding: 16px 24px 24px;
    border-top: 1px solid var(--border);
    margin-top: 20px;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

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

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

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

.btn-danger {
    background: #ef4444;
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Font Controls */
.font-controls-sidebar {
    display: flex;
    justify-content: center;
}

.font-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 8px 12px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 12px;
    font-weight: 500;
}

.font-toggle:hover {
    background: var(--hover);
    color: var(--text);
    border-color: var(--accent);
}

.font-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.sidebar.collapsed .font-label {
    display: none;
}

.theme-controls-sidebar {
    display: flex;
    justify-content: center;
}

.theme-group {
    display: flex;
    gap: 4px;
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: 4px;
}

.theme-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

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

.theme-btn.active {
    background: var(--accent);
    color: var(--accent-text);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: transparent;
    overflow: hidden;
}

/* Views */
.view {
    flex: 1;
    display: none;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.view.active {
    display: flex;
}

.view-content {
    padding: 32px;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.view-content h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text);
}

.view-content p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* Chat Interface */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
    padding: 0 16px;
    height: 100vh;
    overflow: hidden;
}

.chat-messages {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 32px 0;
    display: flex;
    flex-direction: column;
    min-height: 0;
    max-height: calc(100vh - 200px);
    scroll-behavior: smooth;
}

.chat-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    min-height: 200px;
}

.welcome-logo {
    margin-bottom: 24px;
}

.logo-text {
    font-family: var(--font-mono);
    font-size: 32px;
    font-weight: 300;
}

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

.logo-highlight {
    color: var(--accent);
}

.welcome-subtitle {
    font-size: 20px;
    color: var(--text-muted);
    font-weight: 400;
}

/* Chat Input */
.chat-input-container {
    flex: 0 0 auto;
    padding: 16px 0;
    position: relative;
    background: transparent;
}

/* Ollama Status Compact (Top Right) */
.ollama-status-compact {
    position: fixed;
    top: 16px;
    right: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(var(--sidebar-bg-rgb), 0.8);
    backdrop-filter: blur(10px);
    padding: 8px 12px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border);
    z-index: 100;
    transition: all var(--transition-fast);
}

.ollama-status-compact:hover {
    background: rgba(var(--sidebar-bg-rgb), 0.95);
    border-color: var(--accent);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-indicator:has(.connected) .status-dot {
    background: #10b981;
}

.status-indicator:has(.disconnected) .status-dot {
    background: #ef4444;
}

.ollama-status {
    font-size: 12px;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.model-select-compact {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    padding: 4px 8px;
    font-size: 12px;
    font-family: var(--font-mono);
    cursor: pointer;
    min-width: 100px;
}

.model-select-compact:focus {
    outline: none;
    border-color: var(--accent);
}

/* Image Upload */
.image-upload-container {
    margin-bottom: 12px;
}

.image-upload-icon {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.image-upload-icon:hover {
    background: var(--hover);
    color: var(--accent);
}

.image-upload-icon svg {
    width: 20px;
    height: 20px;
}

.image-upload-icon:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.image-preview {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.image-preview img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--border);
    cursor: pointer;
    position: relative;
}

.image-preview img:hover {
    border-color: var(--accent);
}

.chat-input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 12px 16px;
    transition: border-color var(--transition-fast);
}

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

.chat-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.5;
    resize: none;
    min-height: 24px;
    max-height: 200px;
}

.chat-input::placeholder {
    color: var(--text-muted);
}

.chat-send {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    margin-left: 12px;
}

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

.chat-send:not(:disabled) {
    color: var(--accent);
}

.chat-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.chat-send svg {
    width: 16px;
    height: 16px;
}

/* Message Bubbles */
.message {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
    opacity: 0.75;
}

.message.user {
    align-items: flex-end;
}

.message.assistant {
    align-items: flex-start;
}

.message-content {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    font-size: 14px;
    line-height: 1.4;
}

.message.user .message-content {
    background: var(--accent);
    color: var(--accent-text);
}

.message.assistant .message-content {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100vh;
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }

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

    .main-content {
        width: 100%;
    }

    .chat-container {
        padding: 0 12px;
    }

    .welcome-logo .logo-text {
        font-size: 24px;
    }

    .welcome-subtitle {
        font-size: 16px;
    }

    .ollama-status-compact {
        top: 12px;
        right: 12px;
        padding: 6px 10px;
    }

    .ollama-status {
        display: none;
    }

    .model-select-compact {
        min-width: 80px;
        font-size: 11px;
    }

    .message {
        width: 90%;
    }
}

/* FPS Indicator */
.fps-indicator {
    position: fixed;
    bottom: 16px;
    right: 16px;
    background: rgba(var(--sidebar-bg-rgb), 0.8);
    backdrop-filter: blur(10px);
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
    z-index: 100;
    user-select: none;
    pointer-events: none;
}

/* Scrollbar Styling */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Chat Messages */
.message {
    display: flex;
    flex-direction: column;
    margin-bottom: 24px;
    width: 75%;
}

.message.user {
    align-self: flex-end;
    margin-left: auto;
}

.message.assistant {
    align-self: flex-start;
    margin-right: auto;
}

.message-content {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 12px 16px;
    color: var(--text);
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
    position: relative;
    user-select: text;
    cursor: text;
}

.message-timestamp {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
    font-family: var(--font-mono);
}

.message.user .message-timestamp {
    text-align: right;
}

.message.assistant .message-timestamp {
    text-align: left;
}

.copy-button {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--hover);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    padding: 4px 6px;
    font-size: 10px;
    color: var(--text-muted);
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast);
    font-family: var(--font-mono);
}

.message:hover .copy-button {
    opacity: 1;
}

.copy-button:hover {
    background: var(--accent);
    color: var(--accent-text);
}

.copy-button.copied {
    background: #10b981;
    color: white;
}

.message.user .message-content {
    background: var(--accent);
    color: var(--accent-text);
    border-color: var(--accent);
}

/* Removed blinking cursor - no animation on streaming messages */

.message-images {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.message-image {
    max-width: 200px;
    max-height: 200px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border);
    cursor: pointer;
}

/* FPS Mode */
body.fps-mode {
    cursor: none;
    overflow: hidden;
}

body.fps-mode .sidebar,
body.fps-mode .chat-input-container,
body.fps-mode .chat-messages,
body.fps-mode .ollama-status-compact,
body.fps-mode .fps-indicator {
    display: none !important;
}

/* FPS Mode Instructions */
.fps-instructions {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 20px;
    border-radius: var(--border-radius);
    font-family: var(--font-mono);
    font-size: 14px;
    text-align: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.fps-instructions.show {
    opacity: 1;
}

.fps-instructions h3 {
    margin-bottom: 10px;
    color: #10b981;
}

.fps-instructions p {
    margin: 5px 0;
}

/* Loading States */
@keyframes pulse {
    0%,
    100% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Font Dropdown */
.font-dropdown {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.font-dropdown.show {
    display: flex;
}

.font-dropdown-content {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    width: 320px;
    max-height: 500px;
    box-shadow: 0 10px 25px var(--shadow);
    overflow: hidden;
}

.font-dropdown-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    font-size: 14px;
}

.font-dropdown-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.font-dropdown-close:hover {
    background: var(--hover);
    color: var(--text);
}

.font-dropdown-close svg {
    width: 16px;
    height: 16px;
}

.font-options {
    max-height: 400px;
    overflow-y: auto;
}

.font-section {
    padding: 12px;
}

.font-section:not(:last-child) {
    border-bottom: 1px solid var(--border);
}

.font-section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.font-option {
    display: block;
    width: 100%;
    background: none;
    border: none;
    color: var(--text);
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
    font-size: 14px;
    margin-bottom: 2px;
}

.font-option:hover {
    background: var(--hover);
}

.font-option.active {
    background: var(--accent);
    color: var(--accent-text);
}

/* Font Option Previews */
.font-option[data-font="JetBrains Mono"] {
    font-family: var(--font-jetbrains);
}
.font-option[data-font="Fira Code"] {
    font-family: var(--font-fira);
}
.font-option[data-font="Source Code Pro"] {
    font-family: var(--font-source-code);
}
.font-option[data-font="Roboto Mono"] {
    font-family: var(--font-roboto-mono);
}
.font-option[data-font="Ubuntu Mono"] {
    font-family: var(--font-ubuntu-mono);
}
.font-option[data-font="Inter"] {
    font-family: var(--font-inter);
}
.font-option[data-font="Source Sans Pro"] {
    font-family: var(--font-source-sans);
}
.font-option[data-font="Roboto"] {
    font-family: var(--font-roboto);
}
.font-option[data-font="Open Sans"] {
    font-family: var(--font-open-sans);
}
.font-option[data-font="Lato"] {
    font-family: var(--font-lato);
}
.font-option[data-font="Poppins"] {
    font-family: var(--font-poppins);
}
.font-option[data-font="Nunito"] {
    font-family: var(--font-nunito);
}

/* Dynamic Font Application */
body[data-font="JetBrains Mono"] {
    --font-sans: var(--font-jetbrains);
    --font-mono: var(--font-jetbrains);
}
body[data-font="Fira Code"] {
    --font-sans: var(--font-fira);
    --font-mono: var(--font-fira);
}
body[data-font="Source Code Pro"] {
    --font-sans: var(--font-source-code);
    --font-mono: var(--font-source-code);
}
body[data-font="Roboto Mono"] {
    --font-sans: var(--font-roboto-mono);
    --font-mono: var(--font-roboto-mono);
}
body[data-font="Ubuntu Mono"] {
    --font-sans: var(--font-ubuntu-mono);
    --font-mono: var(--font-ubuntu-mono);
}
body[data-font="Inter"] {
    --font-sans: var(--font-inter);
    --font-mono: var(--font-jetbrains);
}
body[data-font="Source Sans Pro"] {
    --font-sans: var(--font-source-sans);
    --font-mono: var(--font-jetbrains);
}
body[data-font="Roboto"] {
    --font-sans: var(--font-roboto);
    --font-mono: var(--font-jetbrains);
}
body[data-font="Open Sans"] {
    --font-sans: var(--font-open-sans);
    --font-mono: var(--font-jetbrains);
}
body[data-font="Lato"] {
    --font-sans: var(--font-lato);
    --font-mono: var(--font-jetbrains);
}
body[data-font="Poppins"] {
    --font-sans: var(--font-poppins);
    --font-mono: var(--font-jetbrains);
}
body[data-font="Nunito"] {
    --font-sans: var(--font-nunito);
    --font-mono: var(--font-jetbrains);
}