:root {
    --bg-dark: #0a0a0f;
    --bg-darker: #050508;
    --bg-card: rgba(15, 15, 25, 0.8);
    --bg-glass: rgba(20, 20, 35, 0.6);
    --primary: #00f0ff;
    --primary-glow: rgba(0, 240, 255, 0.3);
    --secondary: #ff00aa;
    --secondary-glow: rgba(255, 0, 170, 0.3);
    --accent: #8b5cf6;
    --accent-glow: rgba(139, 92, 246, 0.3);
    --success: #00ff88;
    --warning: #ffaa00;
    --danger: #ff3366;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --border-color: rgba(255, 255, 255, 0.1);
    --border-glow: rgba(0, 240, 255, 0.2);
    --gradient-primary: linear-gradient(135deg, #00f0ff 0%, #8b5cf6 50%, #ff00aa 100%);
    --gradient-dark: linear-gradient(180deg, #0a0a0f 0%, #151520 100%);
    --shadow-glow: 0 0 30px rgba(0, 240, 255, 0.15);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-dark);
    background-image: 
        radial-gradient(ellipse at 20% 20%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(255, 0, 170, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
    min-height: 100vh;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--secondary);
    text-shadow: 0 0 10px var(--primary-glow);
}

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

.header {
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 0 20px var(--primary-glow);
    position: relative;
}

.logo-icon::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-primary);
    border-radius: calc(var(--radius-md) + 2px);
    z-index: -1;
    opacity: 0.5;
    filter: blur(8px);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: 0.5rem 0;
    transition: all 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
}

.hero {
    padding: 8rem 0 6rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    opacity: 0.3;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { filter: drop-shadow(0 0 20px var(--primary-glow)); }
    50% { filter: drop-shadow(0 0 40px var(--secondary-glow)); }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-dark);
    box-shadow: 0 0 30px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 50px var(--primary-glow), 0 10px 30px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
}

.section {
    padding: 5rem 0;
}

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

.section-title {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: -3rem;
    position: relative;
    z-index: 10;
}

.stat-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    padding: 2.5rem 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

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

.stat-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    box-shadow: 0 0 30px var(--primary-glow);
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1rem;
}

.profiles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.profile-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    position: relative;
}

.profile-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.profile-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--primary);
    box-shadow: 0 20px 60px rgba(0, 240, 255, 0.2);
}

.profile-card:hover::before {
    opacity: 0.05;
}

.profile-header {
    position: relative;
    height: 160px;
    background: var(--gradient-primary);
    overflow: hidden;
}

.profile-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, var(--bg-glass), transparent);
}

.profile-avatar {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--bg-dark);
    background: var(--bg-card);
    overflow: hidden;
    z-index: 10;
    box-shadow: 0 0 30px var(--primary-glow);
}

.profile-body {
    padding: 4rem 2rem 2rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

.profile-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.profile-title {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.profile-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.tag {
    padding: 0.5rem 1rem;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--primary);
    transition: all 0.3s ease;
}

.tag:hover {
    background: rgba(0, 240, 255, 0.2);
    box-shadow: 0 0 15px var(--primary-glow);
}

.profile-stats {
    display: flex;
    justify-content: space-around;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.profile-stat {
    text-align: center;
}

.profile-stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.ranking-table {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.ranking-header {
    display: grid;
    grid-template-columns: 100px 1fr 150px 150px;
    gap: 1rem;
    padding: 1.5rem 2rem;
    background: rgba(0, 240, 255, 0.05);
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 1px;
}

.ranking-row {
    display: grid;
    grid-template-columns: 100px 1fr 150px 150px;
    gap: 1rem;
    padding: 1.5rem 2rem;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.ranking-row:hover {
    background: rgba(0, 240, 255, 0.05);
}

.ranking-row:last-child {
    border-bottom: none;
}

.rank-number {
    font-size: 2rem;
    font-weight: 900;
    text-align: center;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
}

.rank-number.gold {
    background: linear-gradient(135deg, #ffd700, #ffaa00);
    color: var(--bg-dark);
    border-color: #ffd700;
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.4);
}

.rank-number.silver {
    background: linear-gradient(135deg, #c0c0c0, #a0a0a0);
    color: var(--bg-dark);
    border-color: #c0c0c0;
    box-shadow: 0 0 30px rgba(192, 192, 192, 0.4);
}

.rank-number.bronze {
    background: linear-gradient(135deg, #cd7f32, #b87333);
    color: var(--bg-dark);
    border-color: #cd7f32;
    box-shadow: 0 0 30px rgba(205, 127, 50, 0.4);
}

.rank-user {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.rank-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
}

.rank-name {
    font-weight: 600;
    font-size: 1.1rem;
}

.rank-points {
    text-align: center;
    font-weight: 800;
    font-size: 1.25rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.rank-level {
    text-align: center;
    font-weight: 600;
    padding: 0.5rem 1rem;
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid rgba(139, 92, 246, 0.4);
    border-radius: var(--radius-sm);
    color: var(--accent);
}

.community-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.community-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: 2rem;
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
}

.community-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.community-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.community-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
}

.community-meta {
    flex: 1;
}

.community-author {
    font-weight: 700;
    font-size: 1.1rem;
}

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

.community-content {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.community-stats {
    display: flex;
    gap: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.community-stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.community-stat:hover {
    color: var(--primary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.about-features {
    list-style: none;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 1.25rem;
    padding: 1rem 1.5rem;
    background: var(--bg-glass);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.about-features li:hover {
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 0 20px var(--primary-glow);
}

.about-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-glow);
}

.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.footer-desc {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.footer-title {
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--primary);
    font-size: 1.1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 0.5rem;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

@media (max-width: 1200px) {
    .profiles-grid,
    .community-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .ranking-header,
    .ranking-row {
        grid-template-columns: 60px 1fr 100px;
    }
    
    .ranking-header div:nth-child(4),
    .ranking-row div:nth-child(4) {
        display: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .profiles-grid,
    .community-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}