/* CSS Custom Properties for Dark Mode */
:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border-color: #30363d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent-color: #58a6ff;
    --accent-hover: #539bf5;
    --success-color: #238636;
    --warning-color: #f85149;
    --shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    --radius: 6px;
    --transition: all 0.2s ease;
    
    /* Word Cloud Category Colors - Dark Mode */
    --category-web: #61dafb;
    --category-cli: #4ade80;
    --category-devops: #f59e0b;
    --category-llm: #a78bfa;
    --category-ml: #ec4899;
    --category-cv: #06b6d4;
    --category-ai: #4682b4;
    --category-mcp: #10b981;
    --category-dev-resources: #3b82f6;
    --category-awesome: #fbbf24;
    --category-databases: #ef4444;
    --category-dev-tools: #84cc16;
    --category-desktop: #06b6d4;
    --category-shell: #22c55e;
    --category-system: #f97316;
    --category-version: #6366f1;
    --category-libraries: #14b8a6;
    --category-security: #dc2626;
    --category-testing: #059669;
    --category-monitoring: #0ea5e9;
    --category-data: #7c3aed;
    --category-infrastructure: #0891b2;
    --category-iot: #f59e0b;
    --category-uncategorized: #94a3b8;
}

/* Light Mode */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-tertiary: #ffffff;
    --border-color: #d1d9e0;
    --text-primary: #24292f;
    --text-secondary: #656d76;
    --text-muted: #8b949e;
    --accent-color: #0969da;
    --accent-hover: #0860ca;
    --success-color: #1f883d;
    --warning-color: #d1242f;
    --shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    
    /* Word Cloud Category Colors - Light Mode */
    --category-web: #0ea5e9;
    --category-cli: #059669;
    --category-devops: #ea580c;
    --category-llm: #7c3aed;
    --category-ml: #be185d;
    --category-cv: #0891b2;
    --category-ai: #36648b;
    --category-mcp: #047857;
    --category-dev-resources: #1d4ed8;
    --category-awesome: #d97706;
    --category-databases: #dc2626;
    --category-dev-tools: #65a30d;
    --category-desktop: #0891b2;
    --category-shell: #16a34a;
    --category-system: #ea580c;
    --category-version: #4f46e5;
    --category-libraries: #0d9488;
    --category-security: #b91c1c;
    --category-testing: #047857;
    --category-monitoring: #0284c7;
    --category-data: #6d28d9;
    --category-infrastructure: #0e7490;
    --category-iot: #d97706;
    --category-uncategorized: #64748b;
}

/* 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(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Header */
.header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.header h1 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.logo-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.25rem; /* optional spacing between image and text */
    margin: 0 auto; /* Center the logo stack horizontally */
}

.logo-image {
    height: 142px;
    width: auto;
    transition: var(--transition);
}

.logo-image:hover {
    transform: scale(1.05);
}

.logo-text {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

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

.theme-toggle,
.view-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover,
.view-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-color);
}

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Controls */
.controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.search-container {
    position: relative;
    flex: 1;
    min-width: 200px;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    padding-right: 2.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px var(--accent-color)25;
}

.search-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

.filter-container {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-select {
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Analytics Section */
.analytics-section {
    margin-bottom: 2rem;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.analytics-section h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.analytics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

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

.analytics-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.125rem;
}

.chart-container {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* Main Content */
.main-content {
    margin-bottom: 2rem;
}

.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    color: var(--text-secondary);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

.error {
    text-align: center;
    padding: 2rem;
    color: var(--warning-color);
    background: var(--bg-secondary);
    border: 1px solid var(--warning-color);
    border-radius: var(--radius);
}

/* Repository Grid */
.repositories {
    display: grid;
    gap: 1.5rem;
    transition: var(--transition);
}

.repositories.grid-view {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.repositories.list-view {
    grid-template-columns: 1fr;
}

.repo-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.repo-card:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.repo-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.repo-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    word-break: break-word;
}

.repo-stars {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    flex-shrink: 0;
}

.repo-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.repo-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.repo-language {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.language-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-color);
}

.repo-categories {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.category-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    border: 1px solid var(--border-color);
}

.repo-updated {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.footer a {
    color: var(--accent-color);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .header {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .header {
        padding: 2rem 1rem;
    }
    
    
    .stats-bar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .controls {
        flex-direction: column;
    }
    
    .filter-container {
        flex-direction: column;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
    }
    
    .repositories.grid-view {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.5rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .repo-card {
        padding: 1rem;
    }
    
    .repo-footer {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Donut Chart Styles */
.donut-chart-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    width: 100%;
    height: 100%;
}

.donut-chart {
    display: block;
    margin: 0 auto;
}

.donut-segment {
    cursor: pointer;
    transition: var(--transition);
    transform-origin: center;
}

.donut-segment:hover {
    opacity: 0.8;
    transform: scale(1.02);
}

.donut-segment.highlighted {
    opacity: 1;
    filter: brightness(1.2);
}

.donut-segment.dimmed {
    opacity: 0.3;
}

.donut-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    pointer-events: none;
    z-index: 1;
}

.donut-total {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.donut-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}


/* Updated Chart Container */
.chart-container {
    height: 300px;
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Word Cloud Styles */
.word-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-content: flex-start;
    gap: 0.5rem;
    width: 100%;
    height: 100%;
    padding: 0.75rem;
    line-height: 1.3;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    
    /* Custom scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.word-cloud::-webkit-scrollbar {
    width: 6px;
}

.word-cloud::-webkit-scrollbar-track {
    background: transparent;
}

.word-cloud::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.word-cloud::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

.word-cloud-item {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    color: var(--text-primary);
    font-weight: 600;
    border: 1px solid transparent;
    flex-shrink: 0;
}

.word-cloud-item:hover,
.word-cloud-item.hovered {
    background: var(--bg-secondary);
    border-color: var(--accent-color);
    transform: scale(1.05);
    opacity: 1 !important;
    z-index: 10;
    position: relative;
}

.word-cloud-item.selected {
    background: var(--accent-color)25;
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.word-text {
    font-size: inherit;
    line-height: 1.2;
}

.word-count {
    font-size: 0.75em;
    opacity: 0.7;
    font-weight: 500;
}

/* Responsive updates for new visualizations */
@media (max-width: 768px) {
    .analytics-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 250px;
    }
    
    .word-cloud {
        gap: 0.5rem;
        padding: 0.75rem;
    }
}

@media (max-width: 480px) {
    .chart-container {
        height: 200px;
        padding: 0.5rem;
    }
    
    .word-cloud {
        gap: 0.25rem;
        padding: 0.5rem;
    }
    
    .word-cloud-item {
        padding: 0.125rem 0.25rem;
        gap: 0.125rem;
    }
    
    .donut-chart-container {
        gap: 0.5rem;
    }
    
    .donut-total {
        font-size: 1.25rem;
    }
    
    .donut-label {
        font-size: 0.75rem;
    }
}