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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.app-container.hidden {
    display: none;
}

/* Connection Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 32px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.modal-header {
    text-align: center;
    margin-bottom: 24px;
}

.modal-header h2 {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.modal-header p {
    color: var(--text-muted);
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group input {
    width: 100%;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
    padding: 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 14px;
}


.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.sidebar-header h1 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header h1 i {
    color: var(--primary-color);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
    animation: pulse 2s infinite;
}

.status-dot.healthy {
    background: var(--success-color);
}

.status-dot.degraded {
    background: var(--warning-color);
}

.status-dot.unhealthy {
    background: var(--error-color);
}

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

.sidebar-section {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-section h2 {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-section h2 i {
    color: var(--primary-color);
    width: 20px;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-tertiary);
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: var(--bg-primary);
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: var(--bg-primary);
    transform: scale(1.02);
}

.upload-area i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 16px;
    display: block;
}

.upload-area p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.upload-progress {
    margin-top: 16px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    transition: width 0.3s ease;
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { background-position: -100% 0; }
    100% { background-position: 100% 0; }
}

.progress-text {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

/* Documents List */
.documents-list {
    max-height: 300px;
    overflow-y: auto;
}

.document-item {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.document-item:hover {
    background: var(--bg-primary);
    transform: translateX(4px);
}

.document-info {
    flex: 1;
    min-width: 0;
}

.document-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.document-meta {
    font-size: 12px;
    color: var(--text-muted);
}

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

.btn-icon-small {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: var(--transition);
}

.btn-icon-small:hover {
    background: var(--bg-secondary);
    color: var(--error-color);
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 24px;
    font-size: 14px;
}

/* Knowledge Base Info */
.knowledge-info {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 16px;
}

.info-text {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
    line-height: 1.6;
}

.info-text i {
    color: var(--primary-color);
    margin-right: 8px;
}

.info-text-small {
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 16px;
    line-height: 1.5;
}

.knowledge-stats {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}

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

.stat-value {
    color: var(--text-primary);
    font-weight: 600;
}

/* Settings */
.settings-group {
    margin-bottom: 16px;
}

.settings-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.settings-group input {
    width: 100%;
    padding: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
}

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

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

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

.btn-icon {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px;
}

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

.btn-send {
    background: var(--primary-color);
    color: white;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}

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

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

.logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.chat-header h2 {
    font-size: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0;
    color: var(--text-primary);
}

.chat-header h2 i {
    color: var(--primary-color);
}

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

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.welcome-message {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-secondary);
}

.welcome-message i {
    font-size: 64px;
    color: var(--primary-color);
    margin-bottom: 24px;
    display: block;
}

.welcome-message h3 {
    font-size: 28px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.welcome-message p {
    font-size: 16px;
    margin-bottom: 8px;
}

.welcome-message .hint {
    font-size: 14px;
    color: var(--text-muted);
    font-style: italic;
}

.message {
    display: flex;
    gap: 12px;
    animation: slideIn 0.3s ease;
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 18px;
}

.message.user .message-avatar {
    background: var(--primary-color);
    color: white;
}

.message.assistant .message-avatar {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

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

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

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

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

.message-text {
    background: var(--bg-secondary);
    padding: 12px 16px;
    border-radius: var(--radius);
    color: var(--text-primary);
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.message.user .message-text {
    background: var(--primary-color);
    color: white;
}

/* Action Buttons */
.action-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    min-height: 80px;
}

.action-btn:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.action-btn:active {
    transform: translateY(0);
}

.action-btn i {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.action-btn span {
    display: block;
    line-height: 1.4;
}

/* System Message Styles */
.message.system {
    margin-bottom: 16px;
}

.system-content {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius);
    padding: 16px;
}

.system-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    font-size: 14px;
}

.system-header i {
    color: var(--primary-color);
}

.server-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.server-info-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.server-info-item:hover {
    background: var(--bg-primary);
}

.server-info-item i {
    color: var(--primary-color);
    font-size: 18px;
    margin-top: 2px;
    width: 20px;
    text-align: center;
}

.server-info-item > div {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

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

.info-value {
    font-size: 13px;
    color: var(--text-primary);
    font-weight: 500;
    word-break: break-word;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-secondary);
}

.connection-status .status-dot.connected {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-color);
    animation: pulse 2s infinite;
}

.message.typing .message-text {
    background: var(--bg-tertiary);
}

.typing-indicator {
    display: inline-flex;
    gap: 4px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.5;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

.sources {
    margin-top: 12px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--primary-color);
}

.sources-header {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.source-item {
    font-size: 13px;
    color: var(--text-muted);
    padding: 4px 0;
    border-bottom: 1px solid var(--border-color);
}

.source-item:last-child {
    border-bottom: none;
}

/* Chat Input */
.chat-input-container {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.chat-input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

#chatInput {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    resize: none;
    max-height: 150px;
    min-height: 44px;
    transition: var(--transition);
}

#chatInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.chat-options {
    margin-top: 12px;
    display: flex;
    gap: 16px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 16px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary-color);
    z-index: 1000;
    animation: slideInRight 0.3s ease;
    max-width: 400px;
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.error {
    border-left-color: var(--error-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.hidden {
    display: none !important;
}

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

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

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

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

/* Software Options */
.software-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.software-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.software-btn:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.software-btn i {
    font-size: 24px;
    color: var(--primary-color);
    width: 30px;
    text-align: center;
}

.software-btn > div {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.software-btn strong {
    font-size: 14px;
    display: block;
}

.software-btn span {
    font-size: 12px;
    color: var(--text-muted);
}

.custom-install input {
    font-size: 14px;
}

.custom-install input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Action Status Indicators */
.action-status {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.action-status.processing {
    border-left-color: var(--primary-color);
}

.action-status.installing {
    border-left-color: var(--primary-color);
    animation: pulse-border 2s infinite;
}

.action-status.success {
    border-left-color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
}

.action-status.error {
    border-left-color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
}

.action-status.warning {
    border-left-color: var(--warning-color);
    background: rgba(245, 158, 11, 0.1);
}

.status-icon {
    font-size: 24px;
    color: var(--primary-color);
    width: 30px;
    text-align: center;
    flex-shrink: 0;
}

.action-status.success .status-icon {
    color: var(--success-color);
}

.action-status.error .status-icon {
    color: var(--error-color);
}

.action-status.warning .status-icon {
    color: var(--warning-color);
}

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

.status-content strong {
    display: block;
    margin-bottom: 8px;
    font-size: 15px;
}

.status-details {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

@keyframes pulse-border {
    0%, 100% {
        border-left-color: var(--primary-color);
    }
    50% {
        border-left-color: var(--secondary-color);
    }
}

/* Progress Bars */
.progress-bar-container {
    margin-top: 12px;
}

.progress-bar-fill {
    height: 6px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
    transition: width 0.3s ease;
    animation: shimmer 2s infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        max-height: 50vh;
    }

    .main-content {
        height: 50vh;
    }

    .software-options {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}