/* 
   Premium Dark Mode Styles for DiverseTune 
   Uses Inter & JetBrains Mono, vibrant gradients, glassmorphism, and micro-animations.
*/

:root {
    --bg-dark: #0a0a16;
    --bg-card: rgba(25, 25, 45, 0.6);
    --bg-card-hover: rgba(35, 35, 60, 0.8);
    --text-main: #f0f0ff;
    --text-muted: #a0a0c0;
    
    --accent-greedy: #ff4757;
    --accent-greedy-glow: rgba(255, 71, 87, 0.4);
    
    --accent-similar: #1dd1a1;
    --accent-similar-glow: rgba(29, 209, 161, 0.4);
    
    --accent-graph_dpp_rerank: #9b59b6;
    --accent-graph_dpp_rerank-glow: rgba(155, 89, 182, 0.5);
    
    --gradient-primary: linear-gradient(135deg, #a855f7, #3b82f6);
    --gradient-greedy: linear-gradient(135deg, #ff6b6b, #c0392b);
    --gradient-similar: linear-gradient(135deg, #1dd1a1, #01a3a4);
    --gradient-graph_dpp_rerank: linear-gradient(135deg, #9b59b6, #8e44ad);
    
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Prevents anchor links from hiding behind sticky nav */
}

/* Background Canvas */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background: radial-gradient(circle at center, #151525 0%, #0a0a16 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 6rem 0 3rem;
    text-align: center;
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(168, 85, 247, 0.1) 40%, transparent 70%);
    z-index: -1;
    filter: blur(60px);
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    color: var(--text-muted);
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-subtitle-text {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 500;
    color: var(--text-main);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.stat-pill {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 140px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.stat-pill:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0.25rem;
}

/* Interactive Search Demo */
.search-container {
    max-width: 600px;
    margin: 0 auto 3rem;
    position: relative;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 1.5rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: color 0.3s ease;
}

.search-input {
    width: 100%;
    padding: 1.25rem 3.5rem 1.25rem 3.5rem;
    font-size: 1.1rem;
    font-family: 'Inter', sans-serif;
    background: rgba(20, 20, 35, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    color: white;
    outline: none;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.search-input:focus {
    border-color: rgba(168, 85, 247, 0.6);
    box-shadow: 0 4px 25px rgba(168, 85, 247, 0.2);
    background: rgba(25, 25, 45, 0.95);
}

.search-input:focus + .search-icon {
    color: var(--accent-graph_dpp_rerank);
}

.search-action-btn {
    position: absolute;
    right: 1.25rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 0.25rem;
    border-radius: 50%;
    transition: all 0.2s ease;
}

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

.search-action-btn.visible {
    display: flex;
}

.search-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.search-results-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    margin-top: 0.5rem;
    background: rgba(20, 20, 35, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    max-height: 350px;
    overflow-y: auto;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.search-results-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Custom scrollbar for dropdown */
.search-results-dropdown::-webkit-scrollbar {
    width: 6px;
}
.search-results-dropdown::-webkit-scrollbar-track {
    background: transparent;
}
.search-results-dropdown::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
}

.search-result-item {
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background 0.2s ease;
}

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

.search-result-item:hover, .search-result-item.selected {
    background: rgba(255, 255, 255, 0.1);
}

.search-result-name {
    display: block;
    font-weight: 500;
    font-size: 1rem;
    color: var(--text-main);
}

.search-result-artist {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(168, 85, 247, 0.5);
}

/* Nav */
.sticky-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 22, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-main);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--text-main);
}

/* Sections */
.section {
    padding: 6rem 0;
}

.section-dark {
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #a855f7;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* Algorithms */
.algo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.algo-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.algo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: transparent;
    transition: var(--transition);
}

#algo-greedy:hover { transform: translateY(-10px); border-color: rgba(255, 71, 87, 0.3); }
#algo-greedy::before { background: var(--gradient-greedy); }

#algo-content_filtering:hover { transform: translateY(-10px); border-color: rgba(29, 209, 161, 0.3); }
#algo-content_filtering::before { background: var(--gradient-similar); }

#algo-graph_dpp_rerank:hover { transform: translateY(-10px); border-color: rgba(155, 89, 182, 0.3); box-shadow: 0 10px 40px rgba(155, 89, 182, 0.15); }
#algo-graph_dpp_rerank::before { background: var(--gradient-graph_dpp_rerank); }

.algo-card-featured {
    border-color: rgba(155, 89, 182, 0.3);
    background: linear-gradient(to bottom, rgba(25, 25, 45, 0.8), rgba(20, 20, 35, 0.9));
}

.featured-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--gradient-graph_dpp_rerank);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    text-transform: uppercase;
    box-shadow: 0 2px 10px rgba(155, 89, 182, 0.4);
}

.algo-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.algo-icon-greedy { background: rgba(255, 71, 87, 0.1); color: var(--accent-greedy); }
.algo-icon-content_filtering { background: rgba(29, 209, 161, 0.1); color: var(--accent-similar); }
.algo-icon-graph_dpp_rerank { background: rgba(155, 89, 182, 0.1); color: var(--accent-graph_dpp_rerank); }

.algo-name {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.algo-type {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.algo-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    min-height: 80px;
}

.algo-traits {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.trait {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-weight: 600;
}

.trait-bad { background: rgba(255, 71, 87, 0.15); color: #ff6b6b; }
.trait-neutral { background: rgba(255, 255, 255, 0.1); color: #ccc; }
.trait-good { background: rgba(29, 209, 161, 0.15); color: #1dd1a1; }

.algo-complexity {
    display: flex;
    justify-content: space-between;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding-top: 1rem;
    border-top: 1px dashed rgba(255, 255, 255, 0.1);
}

/* Metrics Dashboard */
.metrics-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.metric-column {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.metric-column-featured {
    border-color: rgba(155, 89, 182, 0.3);
    box-shadow: 0 0 30px rgba(155, 89, 182, 0.1);
}

.metric-header {
    padding: 1.5rem;
    text-align: center;
    border-bottom: 1px solid var(--glass-border);
}

.metric-header h3 { margin-bottom: 0.25rem; }
.metric-header span { font-size: 0.8rem; opacity: 0.8; }

.metric-header-greedy { background: rgba(255, 71, 87, 0.1); color: #ff6b6b; }
.metric-header-content_filtering { background: rgba(29, 209, 161, 0.1); color: #1dd1a1; }
.metric-header-graph_dpp_rerank { background: rgba(155, 89, 182, 0.15); color: #e056fd; }

.metric-body {
    padding: 1.5rem;
}

.metric-item {
    margin-bottom: 1.5rem;
}
.metric-item:last-child { margin-bottom: 0; }

.metric-bar-container {
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    margin-bottom: 0.5rem;
    overflow: hidden;
}

.metric-bar {
    height: 100%;
    border-radius: 4px;
    width: 0; /* Animated via JS */
    transition: width 1.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.metric-bar-greedy { background: var(--gradient-greedy); }
.metric-bar-content_filtering { background: var(--gradient-similar); }
.metric-bar-graph_dpp_rerank { background: var(--gradient-graph_dpp_rerank); }

.metric-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
}

.metric-label { color: var(--text-muted); }
.metric-value { 
    font-family: 'JetBrains Mono', monospace; 
    font-weight: 600; 
    color: var(--text-main);
}

/* Console Output */
.console-output {
    background: #0d0d16;
    border: 1px solid #2a2a3e;
    border-radius: 8px;
    overflow: hidden;
    max-width: 800px;
    margin: 0 auto;
}

.console-header {
    background: #1a1a2e;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #2a2a3e;
}

.console-dots {
    display: flex;
    gap: 6px;
    margin-right: 15px;
}

.console-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.console-dots span:nth-child(1) { background: #ff5f56; }
.console-dots span:nth-child(2) { background: #ffbd2e; }
.console-dots span:nth-child(3) { background: #27c93f; }

.console-title {
    color: #8a8a9e;
    font-size: 0.85rem;
    font-family: 'Inter', sans-serif;
}

.console-body {
    padding: 1.5rem;
    margin: 0;
    overflow-x: auto;
}

.console-body code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    color: #e0e0ff;
}

/* Visualizations */
.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.chart-card-wide {
    grid-column: 1 / -1;
}

.chart-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.chart-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

canvas {
    width: 100% !important;
    height: auto !important;
    background: rgba(15, 15, 35, 0.5);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Comparison Table */
.table-wrapper {
    overflow-x: auto;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.comparison-table th, .comparison-table td {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.comparison-table th {
    font-weight: 600;
    font-size: 1.1rem;
    background: rgba(0, 0, 0, 0.2);
}

.comparison-table th small {
    display: block;
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.th-greedy { color: #ff6b6b; }
.th-content_filtering { color: #1dd1a1; }
.th-graph_dpp_rerank { color: #e056fd; }

.td-label {
    font-weight: 500;
    color: var(--text-main);
    width: 25%;
}

.td-best {
    font-weight: 700;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
}

.td-winner {
    text-align: center;
}

.winner-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.winner-greedy { background: rgba(255, 71, 87, 0.1); color: #ff6b6b; }
.winner-content_filtering { background: rgba(29, 209, 161, 0.1); color: #1dd1a1; }
.winner-graph_dpp_rerank { background: rgba(155, 89, 182, 0.2); color: #e056fd; border: 1px solid rgba(155, 89, 182, 0.3); }

.bias-indicator {
    font-size: 0.85rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}
.bias-high { background: rgba(255, 71, 87, 0.15); color: #ff6b6b; }
.bias-medium { background: rgba(243, 156, 18, 0.15); color: #f39c12; }
.bias-low { background: rgba(29, 209, 161, 0.15); color: #1dd1a1; }

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

.recs-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    max-height: 500px;
    overflow-y: auto;
}

.recs-title {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--glass-border);
}

.recs-title-greedy { color: #ff6b6b; }
.recs-title-content_filtering { color: #1dd1a1; }
.recs-title-graph_dpp_rerank { color: #e056fd; }

.recs-list {
    list-style: none;
}

.recs-item {
    padding: 0.75rem 0;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.recs-song {
    display: flex;
    flex-direction: column;
}

.recs-name {
    font-weight: 500;
    font-size: 0.95rem;
}

.recs-artist {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.recs-pop {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
}

.pop-high { color: #ff6b6b; }
.pop-med { color: #f39c12; }
.pop-low { color: #1dd1a1; }

/* Conclusions */
.conclusion-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.conclusion-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 2rem;
    transition: var(--transition);
}

.conclusion-card:hover {
    transform: translateY(-5px);
    background: rgba(35, 35, 60, 0.9);
}

.conclusion-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.conclusion-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.conclusion-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.conclusion-winner {
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.1), rgba(59, 130, 246, 0.1));
    border-color: rgba(155, 89, 182, 0.3);
}

/* Formulas */
.formula-card {
    background: #11111e;
    border: 1px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}

.formula-card h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-muted);
}

.formula-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

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

.formula-item h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: #e0e0ff;
}

.formula-math {
    background: #0a0a16;
    padding: 1rem;
    border-radius: 8px;
    font-family: 'JetBrains Mono', serif;
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    display: inline-flex;
    align-items: center;
    letter-spacing: 1px;
}

.formula-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.frac {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    margin: 0 0.5rem;
    vertical-align: middle;
}

.num {
    border-bottom: 1px solid #fff;
    padding: 0 0.2rem;
}

.den {
    padding: 0 0.2rem;
}

/* Footer */
.footer {
    border-top: 1px solid var(--glass-border);
    padding: 4rem 0 2rem;
    background: #05050b;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-tech h4 {
    margin-bottom: 1rem;
    color: var(--text-main);
}

.tech-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-pills span {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
    .nav-links {
        display: none;
    }
}