* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #161b2e;
    --bg-card: #1e2538;
    --accent-primary: #6366f1;
    --accent-secondary: #a78bfa;
    --accent-gold: #fbbf24;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --border-color: #2d3548;
    --success: #10b981;
    --warning: #f59e0b;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #1a1f35 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background: var(--bg-card);
    transform: translateY(-2px);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.2);
    border-color: var(--accent-primary);
}

.stat-icon {
    font-size: 2.5rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 12px;
}

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

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Summary Section */
.summary-section {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 3rem;
}

.summary-section h2 {
    margin-bottom: 1.5rem;
    color: var(--accent-gold);
    font-size: 1.8rem;
}

.summary-content {
    line-height: 1.8;
    color: var(--text-primary);
    white-space: pre-wrap;
}

/* Trending Section */
.trending-section {
    margin-bottom: 3rem;
}

.trending-section h2 {
    margin-bottom: 1.5rem;
    color: var(--accent-gold);
    font-size: 1.8rem;
}

.trending-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.trending-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.trending-card h3 {
    margin-bottom: 1rem;
    color: var(--accent-secondary);
}

.list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.list-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    transition: all 0.2s ease;
}

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

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

.list-item-count {
    color: var(--accent-gold);
    font-weight: 600;
}

/* Filters */
.filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.filters input,
.filters select {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
}

.filters input:focus,
.filters select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

/* Channels Section */
.channels-section h2 {
    margin-bottom: 1.5rem;
    color: var(--accent-gold);
    font-size: 1.8rem;
}

.channel-group {
    margin-bottom: 2rem;
}

.channel-header {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    padding: 1.5rem;
    border-radius: 12px 12px 0 0;
    margin-bottom: 0;
}

.channel-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.channel-meta {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.videos-grid {
    display: grid;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 12px 12px;
}

.video-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.video-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.15);
}

.video-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.video-insights {
    display: grid;
    gap: 0.75rem;
}

.insight-row {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 1rem;
}

.insight-label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent-primary);
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 4rem;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--bg-card);
    border-top: 4px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Error State */
.error {
    text-align: center;
    padding: 4rem;
}

.error-content {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    max-width: 600px;
    margin: 0 auto;
}

.error-content h3 {
    color: var(--warning);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.error-content code {
    display: block;
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    color: var(--accent-gold);
    font-family: 'Courier New', monospace;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }

    .header h1 {
        font-size: 2rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .trending-grid {
        grid-template-columns: 1fr;
    }

    .filters {
        flex-direction: column;
    }

    .insight-row {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
}