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

/* Modern Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

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

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Loading States */
.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn 0.3s ease-out;
}

.loading-content {
    text-align: center;
}

.loading-content .loading-spinner {
    width: 60px;
    height: 60px;
    border-width: 5px;
    margin-bottom: var(--spacing-lg);
}

.loading-content p {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1.125rem;
}

:root {
    /* Modern Color Palette */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --accent-light: #f472b6;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-card: #ffffff;
    --bg-overlay: rgba(255, 255, 255, 0.95);
    
    /* Text Colors */
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
    
    /* Status Colors */
    --success-color: #10b981;
    --success-light: #34d399;
    --warning-color: #f59e0b;
    --warning-light: #fbbf24;
    --error-color: #ef4444;
    --error-light: #f87171;
    --info-color: #3b82f6;
    --info-light: #60a5fa;
    
    /* Gradient Colors */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-info: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-blue: linear-gradient(135deg, #2196F3 0%, #00BCD4 100%);
    
    /* Modern Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-colored: 0 10px 40px -10px rgba(102, 126, 234, 0.4);
    
    /* Borders */
    --border-color: #e5e7eb;
    --border-color-light: #f3f4f6;
    --border-radius: 10px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Animation */
    --bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --bg-tertiary: #4a5568;
    --bg-card: #2d3748;
    
    --text-primary: #ffffff;
    --text-secondary: #e2e8f0;
    --text-muted: #a0aec0;
    --text-light: #718096;
    
    --border-color: #4a5568;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(to bottom right, #f9fafb 0%, #f3f4f6 50%, #e5e7eb 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

body > * {
    position: relative;
    z-index: 1;
}

/* Add fade-in animation to main content */
.main-content {
    animation: fadeIn 0.6s ease-out;
}

/* Stagger animation for grid items */
.metrics-grid > .metric-card {
    animation: slideInRight 0.5s ease-out;
    animation-fill-mode: both;
}

.metrics-grid > .metric-card:nth-child(1) {
    animation-delay: 0.1s;
}

.metrics-grid > .metric-card:nth-child(2) {
    animation-delay: 0.2s;
}

.metrics-grid > .metric-card:nth-child(3) {
    animation-delay: 0.3s;
}

.metrics-grid > .metric-card:nth-child(4) {
    animation-delay: 0.4s;
}

/* API Tabs */
.api-tabs-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.api-tabs {
    display: flex;
    justify-content: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0;
}

.api-tab {
    flex: 1;
    max-width: 300px;
    padding: 16px 24px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
}

.api-tab i {
    font-size: 1.25rem;
}

.api-tab:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

.api-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background: linear-gradient(to bottom, rgba(102, 126, 234, 0.05), transparent);
}

.api-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 3px;
    background: var(--gradient-purple);
    border-radius: 3px 3px 0 0;
}

/* Navigation */
.navbar {
    background: var(--gradient-purple);
    color: white;
    padding: 0;
    position: fixed;
    top: 55px;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    height: 64px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 600;
}

.navbar-brand i {
    font-size: 1.5rem;
}

.navbar-menu {
    display: flex;
    gap: var(--spacing-xs);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
    font-weight: 500;
}

.nav-item:hover,
.nav-item.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateY(-1px);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-icon {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

/* Mock Data Mode Button */
#mockDataToggle {
    position: relative;
    transition: all 0.3s ease;
}

#mockDataToggle:hover {
    transform: scale(1.1);
}

#mockDataToggle.active,
#mockDataToggle[style*="background: rgb(72, 187, 120)"] {
    background: #48bb78 !important;
    color: white !important;
    box-shadow: 0 0 20px rgba(72, 187, 120, 0.5);
    animation: pulse 2s infinite;
}

#mockDataBadge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: #48bb78;
    color: white;
    border-radius: 50%;
    width: 12px;
    height: 12px;
    font-size: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    box-shadow: 0 2px 8px rgba(72, 187, 120, 0.6);
    animation: bounce 1s infinite;
}

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

.status-indicator.connected {
    color: var(--success-color);
}

.status-indicator.disconnected {
    color: var(--error-color);
}

/* Main Content */
.main-content {
    margin-top: 119px;
    padding: var(--spacing-xl);
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.content-section {
    display: none;
}

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

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.date-controls,
.section-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Form Elements */
.date-input,
.select-input,
.input-field {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.date-input:focus,
.select-input:focus,
.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-purple);
    color: white;
    box-shadow: var(--shadow-md);
}

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

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

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

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

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--border-radius);
}

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

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.metric-card {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color-light);
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-purple);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.metric-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.metric-card:hover::before {
    opacity: 1;
}

.metric-icon {
    width: 70px;
    height: 70px;
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: white;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.metric-card:hover .metric-icon {
    transform: scale(1.1) rotate(5deg);
}

.metric-icon.trends {
    background: var(--gradient-primary);
}

.metric-icon.topics {
    background: var(--gradient-success);
}

.metric-icon.volume {
    background: var(--gradient-info);
}

.metric-icon.sentiment {
    background: var(--gradient-secondary);
}

.metric-content {
    flex: 1;
}

.metric-content h3 {
    font-size: 2.25rem;
    font-weight: 700;
    background: var(--gradient-purple);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.025em;
}

.metric-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-change {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 12px;
}

.metric-change.positive {
    background: rgba(72, 187, 120, 0.1);
    color: var(--success-color);
}

.metric-change.negative {
    background: rgba(245, 101, 101, 0.1);
    color: var(--error-color);
}

.metric-change.neutral {
    background: var(--bg-tertiary);
    color: var(--text-muted);
}

/* Charts */
.charts-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.chart-container {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--border-color-light);
    transition: all var(--transition-normal);
}

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

.chart-container.full-width {
    grid-column: 1 / -1;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl);
    background: linear-gradient(to right, var(--bg-secondary), var(--bg-primary));
    border-bottom: 1px solid var(--border-color-light);
}

.chart-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.chart-header h3 i {
    color: var(--primary-color);
}

.chart-controls {
    display: flex;
    gap: var(--spacing-xs);
}

.chart-content {
    padding: var(--spacing-lg);
    min-height: 300px;
}

.chart-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--text-muted);
}

.chart-placeholder i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* Activity Section */
.activity-section {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

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

.activity-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.activity-list {
    max-height: 400px;
    overflow-y: auto;
}

.activity-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.activity-placeholder i {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.activity-item {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color-light);
    transition: all var(--transition-normal);
    cursor: pointer;
    border-radius: var(--border-radius);
    margin-bottom: 2px;
    position: relative;
}

.activity-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--gradient-purple);
    opacity: 0;
    transition: opacity var(--transition-normal);
    border-radius: 3px 0 0 3px;
}

.activity-item:hover {
    background: var(--bg-secondary);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.activity-item:hover::before {
    opacity: 1;
}

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

.activity-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.activity-meta {
    font-size: 0.8125rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.activity-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.activity-meta i {
    color: var(--primary-color);
    font-size: 0.875rem;
}

/* Trends Grid */
.trends-container,
.topics-container {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
}

.trends-grid,
.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.trends-placeholder,
.topics-placeholder {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.trends-placeholder i,
.topics-placeholder i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.trend-card,
.topic-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.topic-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-purple);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.trend-card:hover,
.topic-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.topic-card:hover::before {
    opacity: 1;
}

.topic-card::after {
    content: 'Click to view posts →';
    position: absolute;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--gradient-purple);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    pointer-events: none;
    box-shadow: var(--shadow-md);
}

.topic-card:hover::after {
    opacity: 1;
    transform: translateY(0);
}

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

.trend-title,
.topic-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topic-date {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-secondary);
    background: var(--background-lighter);
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 8px;
}

.trend-type {
    background: var(--primary-color);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.trend-type-badges {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-top: var(--spacing-xs);
}

.trend-type-badge {
    background: var(--primary-color);
    color: white;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.trend-type-badge.spike {
    background: var(--error-color);
}

.trend-type-badge.emerging {
    background: var(--info-color);
}

.trend-type-badge.growing {
    background: var(--success-color);
}

.campaign-type-badge {
    background: var(--secondary-color);
    color: white;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.campaign-distribution {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
}

.campaign-distribution strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.campaign-dist-item {
    display: inline-block;
    margin: 2px 4px;
    padding: 2px 6px;
    background: var(--bg-card);
    border-radius: 4px;
    font-size: 0.75rem;
}

.trend-metrics,
.topic-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.metric-item {
    text-align: center;
}

.metric-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.trend-keywords,
.topic-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.keyword-tag {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.trend-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Analytics */
.analytics-container {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
}

.analytics-grid {
    display: grid;
    gap: var(--spacing-lg);
}

/* Settings */
.settings-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.settings-group {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-xl);
}

.settings-group h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.setting-item {
    margin-bottom: var(--spacing-lg);
}

.setting-item label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.setting-item .input-field,
.setting-item .select-input {
    width: 100%;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 900px;
    width: 90%;
    max-height: 85vh;
    overflow: hidden;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

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

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: calc(80vh - 100px);
}

/* Cluster Details */
.cluster-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.cluster-info-section {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
}

.cluster-info-section h3,
.posts-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.cluster-info-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

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

.info-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.cluster-keywords-section {
    margin-top: var(--spacing-md);
}

.campaign-dist-section {
    margin-top: var(--spacing-md);
}

.campaign-dist-chart {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.campaign-dist-bar {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dist-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.dist-bar-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-card);
    border-radius: 4px;
    overflow: hidden;
    height: 24px;
}

.dist-bar {
    height: 100%;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

.dist-count {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    padding: 0 var(--spacing-sm);
}

/* Posts List */
.posts-section {
    flex: 1;
}

.posts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: 600px;
    overflow-y: auto;
    padding-right: var(--spacing-xs);
}

.post-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: all var(--transition-fast);
}

.post-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

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

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

.post-source,
.post-date,
.post-author {
    display: flex;
    align-items: center;
    gap: 4px;
}

.sentiment-badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: capitalize;
}

.sentiment-positive {
    background: rgba(72, 187, 120, 0.1);
    color: var(--success-color);
}

.sentiment-negative {
    background: rgba(245, 101, 101, 0.1);
    color: var(--error-color);
}

.sentiment-neutral {
    background: var(--bg-tertiary);
    color: var(--text-muted);
}

.post-text {
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.post-campaign {
    margin-bottom: var(--spacing-sm);
}

.post-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: var(--spacing-sm);
}

.keyword-tag-small {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 2px 6px;
    border-radius: 8px;
    font-size: 0.7rem;
    font-weight: 500;
}

.post-entities {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
}

.entity-tag {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 2px 6px;
    border-radius: 8px;
    font-size: 0.7rem;
    font-weight: 500;
}

.post-footer {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

.post-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.post-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    z-index: 3000;
    backdrop-filter: blur(2px);
}

.loading-overlay.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-content p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    z-index: 4000;
    transform: translateX(400px);
    opacity: 0;
    transition: all var(--transition-normal);
    max-width: 400px;
}

.toast.active {
    transform: translateX(0);
    opacity: 1;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toast-icon {
    font-size: 1.25rem;
}

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

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

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

.toast.info .toast-icon {
    color: var(--info-color);
}

.toast-message {
    color: var(--text-primary);
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: var(--spacing-md);
    }
    
    .navbar-container {
        padding: 0 var(--spacing-md);
    }
    
    .navbar-menu {
        display: none;
    }
    
    .api-tabs {
        flex-direction: row;
        justify-content: stretch;
    }
    
    .api-tab {
        flex: 1;
        max-width: none;
        font-size: 0.875rem;
        padding: 12px 16px;
    }
    
    .api-tab i {
        font-size: 1rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .charts-row {
        grid-template-columns: 1fr;
    }
    
    .trends-grid,
    .topics-grid {
        grid-template-columns: 1fr;
    }
    
    .settings-container {
        grid-template-columns: 1fr;
    }
    
    .date-controls,
    .section-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .date-controls > *,
    .section-controls > * {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-sm);
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
    
    .toast {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        left: var(--spacing-md);
        max-width: none;
    }
}

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

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

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

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

/* HART Event Cards */
.hart-event-card {
    border-left: 4px solid var(--primary-color);
}

.hart-event-card:hover {
    border-left-color: var(--primary-dark);
}

.hart-event-info {
    margin-bottom: var(--spacing-md);
}

.hart-event-title {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.hart-event-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.hart-event-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.hart-event-meta i {
    font-size: 0.875rem;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

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

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

.text-success {
    color: var(--success-color);
}

.text-warning {
    color: var(--warning-color);
}

.text-error {
    color: var(--error-color);
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.flex {
    display: flex;
}

.flex-column {
    flex-direction: column;
}

.flex-center {
    align-items: center;
    justify-content: center;
}

.flex-between {
    justify-content: space-between;
}

.flex-wrap {
    flex-wrap: wrap;
}

.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }
.gap-5 { gap: var(--spacing-xl); }