/* Modern CSS Variables for Theme */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #059669;
    --success-hover: #047857;
    --warning-color: #d97706;
    --warning-hover: #b45309;
    --danger-color: #dc2626;
    --danger-hover: #b91c1c;
    --emergency-color: #991b1b;
    --secondary-color: #6b7280;
    --secondary-hover: #4b5563;
    
    --background: #f8fafc;
    --surface: #ffffff;
    --surface-hover: #f1f5f9;
    --border: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

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

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing);
    min-height: 100vh;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--surface);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-lg);
}

.header h1 {
    color: var(--primary-color);
    font-size: 1.875rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing);
}

.system-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--secondary-color);
    animation: pulse 2s infinite;
}

.status-indicator.online { background: var(--success-color); }
.status-indicator.offline { background: var(--danger-color); }
.status-indicator.warning { background: var(--warning-color); }

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

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--surface);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-lg);
}

.nav-tab {
    flex: 1;
    padding: var(--spacing) var(--spacing-lg);
    background: transparent;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.nav-tab:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

.nav-tab.active {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow);
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

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

/* Dashboard */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.stat-header {
    display: flex;
    align-items: center;
    gap: var(--spacing);
    margin-bottom: var(--spacing);
}

.stat-header i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.stat-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Recent Activity */
.recent-activity {
    background: var(--surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
}

.recent-activity h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing);
    margin-bottom: var(--spacing);
    color: var(--text-primary);
}

.activity-list {
    max-height: 300px;
    overflow-y: auto;
}

.activity-item {
    padding: var(--spacing);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.activity-time {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Scrapers Grid */
.scrapers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.scraper-card {
    background: var(--surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.scraper-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.scraper-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing);
}

.scraper-header h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing);
    color: var(--text-primary);
    font-size: 1.25rem;
}

.scraper-status {
    margin-left: auto;
}

.status-badge {
    padding: var(--spacing-xs) var(--spacing);
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-badge.running {
    background: #dcfce7;
    color: var(--success-color);
}

.status-badge.stopped {
    background: #fee2e2;
    color: var(--danger-color);
}

.status-badge.error {
    background: #fef3c7;
    color: var(--warning-color);
}

.scraper-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing);
    font-size: 0.875rem;
}

.scraper-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing);
    margin-bottom: var(--spacing-lg);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.stat label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

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

.scraper-controls {
    display: flex;
    gap: var(--spacing-sm);
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    font-size: 0.875rem;
}

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

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

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

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

.btn-success:hover:not(:disabled) {
    background: var(--success-hover);
}

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

.btn-warning:hover:not(:disabled) {
    background: var(--warning-hover);
}

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

.btn-danger:hover:not(:disabled) {
    background: var(--danger-hover);
}

.btn-emergency {
    background: var(--emergency-color);
    color: white;
    font-weight: 700;
    animation: pulse-emergency 2s infinite;
}

.btn-emergency:hover {
    background: #7f1d1d;
}

@keyframes pulse-emergency {
    0%, 100% { box-shadow: 0 0 0 0 rgba(153, 27, 27, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(153, 27, 27, 0); }
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--secondary-hover);
}

.btn-info {
    background: #0ea5e9;
    color: white;
}

.btn-info:hover:not(:disabled) {
    background: #0284c7;
}

/* Files Section */
.files-header {
    background: var(--surface);
    padding: var(--spacing);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-lg);
}

.files-controls {
    display: flex;
    gap: var(--spacing);
    align-items: center;
    flex-wrap: wrap;
}

#file-search {
    flex: 1;
    min-width: 250px;
    padding: var(--spacing-sm) var(--spacing);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    background: var(--surface);
    color: var(--text-primary);
    font-size: 0.875rem;
}

#file-search:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.files-grid {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-lg);
}

.file-types {
    background: var(--surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    height: fit-content;
}

.file-types h4 {
    margin-bottom: var(--spacing);
    color: var(--text-primary);
}

.file-type-item {
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-type-item:hover {
    background: var(--surface-hover);
}

.file-type-item.active {
    background: var(--primary-color);
    color: white;
}

.file-type-count {
    font-size: 0.75rem;
    background: var(--border);
    color: var(--text-secondary);
    padding: 2px 6px;
    border-radius: 10px;
}

.file-type-item.active .file-type-count {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.file-list {
    background: var(--surface);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.file-list h4 {
    padding: var(--spacing-lg);
    margin: 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

.files-container {
    max-height: 600px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing);
    padding: var(--spacing);
    border-bottom: 1px solid var(--border);
    transition: background 0.2s ease;
}

.file-item:hover {
    background: var(--surface-hover);
}

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

.file-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    background: var(--surface-hover);
    color: var(--primary-color);
}

.file-info {
    flex: 1;
}

.file-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.file-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    gap: var(--spacing);
}

.file-actions {
    display: flex;
    gap: var(--spacing-xs);
}

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

/* Logs Section */
.logs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--surface);
    padding: var(--spacing);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-lg);
}

#log-selector {
    padding: var(--spacing-sm) var(--spacing);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    background: var(--surface);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.log-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.log-container {
    background: #1e293b;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    height: 500px;
    overflow: hidden;
}

#log-content {
    height: 100%;
    padding: var(--spacing);
    margin: 0;
    color: #e2e8f0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.75rem;
    line-height: 1.5;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Emergency Controls */
.emergency-controls {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1000;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--surface);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    width: 90%;
}

.modal-content h3 {
    margin-bottom: var(--spacing);
    color: var(--text-primary);
}

.modal-content p {
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}

.modal-buttons {
    display: flex;
    gap: var(--spacing);
    justify-content: flex-end;
}

/* Notifications */
.notifications {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.notification {
    padding: var(--spacing) var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    animation: slideIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing);
}

.notification.success {
    background: #dcfce7;
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.notification.error {
    background: #fee2e2;
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

.notification.warning {
    background: #fef3c7;
    color: var(--warning-color);
    border-left: 4px solid var(--warning-color);
}

.notification.info {
    background: #dbeafe;
    color: var(--primary-color);
    border-left: 4px solid var(--primary-color);
}

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

/* Loading States */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .header {
        flex-direction: column;
        gap: var(--spacing);
        text-align: center;
    }
    
    .nav-tabs {
        overflow-x: auto;
        padding-bottom: var(--spacing);
    }
    
    .nav-tab {
        white-space: nowrap;
        min-width: 120px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .scrapers-grid {
        grid-template-columns: 1fr;
    }
    
    .files-grid {
        grid-template-columns: 1fr;
    }
    
    .files-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    #file-search {
        min-width: auto;
    }
    
    .logs-header {
        flex-direction: column;
        gap: var(--spacing);
        align-items: stretch;
    }
    
    .emergency-controls {
        bottom: var(--spacing);
        right: var(--spacing);
        left: var(--spacing);
    }
    
    .btn-emergency {
        width: 100%;
    }
    
    .notifications {
        top: var(--spacing);
        right: var(--spacing);
        left: var(--spacing);
    }
    
    .notification {
        min-width: auto;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --background: #0f172a;
        --surface: #1e293b;
        --surface-hover: #334155;
        --border: #334155;
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-muted: #94a3b8;
    }
}

/* Print Styles */
@media print {
    .nav-tabs,
    .emergency-controls,
    .notifications,
    .modal {
        display: none !important;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .tab-content {
        display: block !important;
        page-break-inside: avoid;
    }
}