/* CSS Variables - Dark Theme with Accent Colors */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-hover: #252535;
    --bg-active: #2d2d40;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-tertiary: #6b6b7b;
    
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    
    --border-color: #2a2a3a;
    --border-light: #3a3a4a;
    
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html, body {
    height: 100%;
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow: hidden;
}

/* App Container */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 280px;
    min-width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-glow);
}

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

.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.new-chat-btn {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.new-chat-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

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

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
    margin-bottom: 12px;
    padding: 0 8px;
}

.chat-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chat-item {
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
    font-size: 14px;
}

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

.chat-item.active {
    background: var(--bg-active);
    color: var(--text-primary);
}

.chat-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.chat-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.credit-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.credit-icon {
    font-size: 18px;
}

.credit-info {
    display: flex;
    flex-direction: column;
}

.credit-label {
    font-size: 11px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.credit-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--accent-primary);
}

.credit-value.unlimited {
    color: var(--success);
    font-size: 20px;
}

.credit-indicator.unlimited {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.user-menu:hover {
    background: var(--bg-hover);
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

.user-name {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--bg-primary);
}

/* Chat Area */
.chat-area {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

/* Empty State */
.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    padding: 40px 20px;
}

.empty-illustration {
    margin-bottom: 32px;
}

.orbit-container {
    position: relative;
    width: 120px;
    height: 120px;
}

.orbit {
    position: absolute;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    animation: rotate 10s linear infinite;
}

.orbit-1 {
    width: 120px;
    height: 120px;
    top: 0;
    left: 0;
    border-color: var(--accent-primary);
    opacity: 0.3;
}

.orbit-2 {
    width: 80px;
    height: 80px;
    top: 20px;
    left: 20px;
    border-color: var(--accent-secondary);
    opacity: 0.5;
    animation-duration: 7s;
    animation-direction: reverse;
}

.orbit-3 {
    width: 40px;
    height: 40px;
    top: 40px;
    left: 40px;
    border-color: var(--accent-primary);
    opacity: 0.7;
    animation-duration: 5s;
}

.center-core {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--accent-gradient);
    border-radius: 50%;
    top: 52px;
    left: 52px;
    box-shadow: var(--shadow-glow);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.8; }
}

.empty-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #fff 0%, #a0a0b0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.empty-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.6;
}

.suggestion-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.chip {
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.chip:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.chip-icon {
    font-size: 16px;
}

/* Messages Container */
.messages-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    padding-bottom: 20px;
}

.message {
    display: flex;
    gap: 16px;
    animation: fadeIn 0.3s ease;
}

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

.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: var(--accent-gradient);
    color: white;
}

.message.assistant .message-avatar {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.message-content {
    flex: 1;
    min-width: 0;
}

.message-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.message-author {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.message-time {
    font-size: 12px;
    color: var(--text-tertiary);
}

.message-bubble {
    padding: 16px;
    border-radius: var(--radius-lg);
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-primary);
}

.message.user .message-bubble {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.message.assistant .message-bubble {
    background: transparent;
    padding: 0;
}

.message-text {
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Code Block */
.code-block {
    margin: 16px 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.code-language {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
}

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

.code-action {
    padding: 4px 8px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.code-content {
    padding: 16px;
    overflow-x: auto;
}

.code-content pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-primary);
}

/* Tool Call Display */
.tool-call {
    margin: 16px 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.tool-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.tool-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-primary);
    border-radius: var(--radius-sm);
    font-size: 12px;
}

.tool-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.tool-status {
    margin-left: auto;
    font-size: 12px;
    color: var(--success);
    display: flex;
    align-items: center;
    gap: 4px;
}

.tool-content {
    padding: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

/* Input Area */
.input-area {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.input-container {
    max-width: 900px;
    margin: 0 auto;
}

.input-wrapper {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 14px 16px;
    display: flex;
    align-items: flex-end;
    gap: 12px;
    transition: all var(--transition-fast);
}

.input-wrapper:focus-within {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.message-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 15px;
    line-height: 1.5;
    resize: none;
    min-height: 24px;
    max-height: 200px;
    font-family: var(--font-sans);
}

.message-input::placeholder {
    color: var(--text-tertiary);
}

.input-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.action-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.send-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.send-btn:hover:not(:disabled) {
    background: var(--accent-secondary);
    transform: scale(1.05);
}

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

.input-hint {
    text-align: center;
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-tertiary);
}

/* Computer Panel */
.computer-panel {
    width: 360px;
    min-width: 360px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-normal);
}

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

.panel-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse-status 2s ease-in-out infinite;
}

.status-indicator.active {
    background: var(--success);
}

@keyframes pulse-status {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.panel-toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.task-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.task-item {
    display: flex;
    gap: 12px;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.task-item:hover {
    background: var(--bg-hover);
}

.task-item.active {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.task-status {
    display: flex;
    align-items: flex-start;
}

.status-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.task-content {
    flex: 1;
    min-width: 0;
}

.task-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.task-meta {
    font-size: 11px;
    color: var(--text-tertiary);
}

/* Tool Execution Panel */
.tool-execution {
    margin-top: 16px;
    padding: 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.tool-execution .tool-header {
    padding: 0;
    background: transparent;
    border: none;
    margin-bottom: 12px;
}

.tool-execution .tool-content {
    padding: 0;
}

/* File Preview */
.file-preview {
    margin-top: 16px;
    padding: 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.file-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.file-icon {
    font-size: 24px;
}

.file-info {
    flex: 1;
}

.file-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.file-size {
    font-size: 11px;
    color: var(--text-tertiary);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

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

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

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: 20px;
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.upload-zone:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.upload-zone p {
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.upload-hint {
    font-size: 13px;
    color: var(--text-tertiary);
}

.file-list {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.file-item-icon {
    font-size: 24px;
}

.file-item-info {
    flex: 1;
}

.file-item-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.file-item-size {
    font-size: 11px;
    color: var(--text-tertiary);
}

.file-item-remove {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-item-remove:hover {
    background: var(--error);
    color: white;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.btn {
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

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

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

/* Responsive Design */
@media (max-width: 1200px) {
    .computer-panel {
        position: fixed;
        right: 0;
        top: 0;
        bottom: 0;
        z-index: 100;
        transform: translateX(100%);
    }
    
    .computer-panel.open {
        transform: translateX(0);
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 100;
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .suggestion-chips {
        flex-direction: column;
        align-items: stretch;
    }
    
    .chip {
        justify-content: flex-start;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* Selection */
::selection {
    background: var(--accent-primary);
    color: white;
}

/* Loading Animation */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 8px 0;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

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

/* Task Progress Bar */
.task-progress {
    margin-top: 8px;
    height: 4px;
    background: var(--bg-hover);
    border-radius: 2px;
    overflow: hidden;
}

.task-progress-bar {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* Web Search Results */
.search-results {
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.search-result {
    padding: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.search-result-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.search-result-url {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-bottom: 6px;
}

.search-result-snippet {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Code Execution Output */
.execution-output {
    margin-top: 12px;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.6;
}

.execution-output.success {
    border-left: 3px solid var(--success);
}

.execution-output.error {
    border-left: 3px solid var(--error);
}

/* File Attachment in Message */
.message-attachments {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.attachment {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 13px;
}

.attachment-icon {
    font-size: 16px;
}

.attachment-name {
    color: var(--text-secondary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 101;
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
}