:root{--bg-primary:#0a0a0f;--bg-secondary:#12121a;--bg-card:rgba(255,255,255,0.03);--bg-card-hover:rgba(255,255,255,0.06);--bg-glass:rgba(255,255,255,0.05);--accent-1:#6366f1;--accent-2:#8b5cf6;--accent-3:#d946ef;--accent-gradient:linear-gradient(135deg,var(--accent-1) 0%,var(--accent-2) 50%,var(--accent-3) 100%);--text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;--border-color:rgba(255,255,255,0.08);--border-hover:rgba(255,255,255,0.15);--glow-primary:0 0 60px rgba(99,102,241,0.3);--glow-card:0 8px 32px rgba(0,0,0,0.4);--radius-sm:8px;--radius:12px;--radius-lg:20px;--radius-xl:28px;--ease-out:cubic-bezier(0.16,1,0.3,1);--transition:all 0.4s var(--ease-out)}*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased}body::before{position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse 80% 50% at 20% 40%,rgba(99,102,241,0.15) 0%,transparent 50%),radial-gradient(ellipse 60% 40% at 80% 60%,rgba(139,92,246,0.1) 0%,transparent 50%),radial-gradient(ellipse 40% 30% at 50% 80%,rgba(217,70,239,0.08) 0%,transparent 50%);pointer-events:none;z-index:0}::selection{background:var(--accent-1);color:white}.container{max-width:1200px;margin:0 auto;padding:0 24px}.navbar{position:fixed;top:0;left:0;right:0;height:72px;background:rgba(10,10,15,0.8);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);z-index:1000}.navbar .container{display:flex;justify-content:space-between;align-items:center;height:100%}.logo{font-size:22px;font-weight:800;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-decoration:none;letter-spacing:-0.5px}.nav-links{display:flex;list-style:none;align-items:center;gap:4px}.nav-links a{color:var(--text-secondary);text-decoration:none;padding:10px 16px;border-radius:var(--radius);font-size:14px;font-weight:500;transition:var(--transition);display:flex;align-items:center;gap:8px}.nav-links a:hover{color:var(--text-primary);background:var(--bg-glass)}.nav-badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;background:#ef4444;color:white;font-size:11px;font-weight:700;border-radius:9px;line-height:1;margin-left:2px}.user-badge{background:var(--accent-gradient);color:white;padding:8px 16px;border-radius:var(--radius);font-size:13px;font-weight:600}.navbar .btn-primary{background:var(--accent-gradient);color:white;padding:10px 20px;border-radius:var(--radius);text-decoration:none;font-weight:600;font-size:14px;transition:var(--transition);box-shadow:0 4px 20px rgba(99,102,241,0.3)}.navbar .btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(99,102,241,0.4)}.nav-dropdown{position:relative;display:flex;align-items:center}.nav-dropdown-toggle{cursor:pointer;color:var(--text-secondary);padding:10px 16px;border-radius:var(--radius);font-size:14px;font-weight:500;transition:var(--transition);display:flex;align-items:center;gap:8px}.nav-dropdown-toggle:hover{color:var(--text-primary);background:var(--bg-glass)}.nav-dropdown-menu{display:none;position:absolute;top:100%;left:0;min-width:180px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--glow-card);z-index:1001;max-height:300px;overflow-y:auto;padding:8px}.nav-dropdown:hover .nav-dropdown-menu{display:block}.nav-user-item{display:flex;align-items:center;gap:8px;padding:8px 12px;color:var(--text-secondary);text-decoration:none;border-radius:6px;font-size:14px;transition:var(--transition)}.nav-user-item:hover{background:var(--bg-card-hover);color:var(--text-primary)}.user-status-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.user-status-dot.online{background:#10b981;box-shadow:0 0 6px #10b981}.user-status-dot.offline{background:#6b7280}.nav-user-item{display:flex;align-items:center;gap:8px;padding:8px 12px;color:var(--text-secondary);text-decoration:none;border-radius:6px;font-size:14px;transition:var(--transition)}.nav-user-item:hover{background:var(--bg-card-hover);color:var(--text-primary)}.nav-user-item .user-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nav-user-item .user-time{font-size:12px;color:var(--text-tertiary);white-space:nowrap}.nav-user-item .online-text{color:#10b981;font-size:12px}.mobile-menu-btn{display:none;background:none;border:none;font-size:24px;cursor:pointer;padding:8px;color:var(--text-secondary);-webkit-tap-highlight-color:transparent;touch-action:manipulation}@media (max-width:768px){.mobile-menu-btn{display:block}.nav-links{display:none !important;position:absolute;top:72px;left:0;right:0;background:rgba(10,10,15,0.98);backdrop-filter:blur(20px);flex-direction:column;padding:16px;border-bottom:1px solid var(--border-color)}.nav-links.active{display:flex !important}.nav-links a{display:block;padding:14px 16px;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.mobile-menu-btn{display:block !important}.nav-dropdown{flex-direction:column;align-items:flex-start}.nav-dropdown-menu{display:none !important;position:static;width:100%;box-shadow:none;border:none;background:var(--bg-tertiary);max-height:none;padding-left:16px}.nav-dropdown-menu.show{display:flex !important}.nav-user-item{padding:10px 12px}}.main-content{padding-top:140px}.hero{min-height:calc(100vh - 72px);display:flex;align-items:center;justify-content:center;text-align:center;padding:80px 24px;position:relative;overflow:hidden}.hero::before{content:'';position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(99,102,241,0.2) 0%,transparent 70%);top:50%;left:50%;transform:translate(-50%,-50%);animation:pulse 8s ease-in-out infinite}@keyframes pulse{0%,100%{transform:translate(-50%,-50%) scale(1);opacity:0.5}50%{transform:translate(-50%,-50%) scale(1.2);opacity:0.8}}.hero-content{position:relative;z-index:1;max-width:800px}.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--bg-glass);border:1px solid var(--border-color);padding:8px 16px;border-radius:50px;font-size:13px;color:var(--text-secondary);margin-bottom:32px;backdrop-filter:blur(10px)}.hero-badge span{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;font-weight:600}.hero h1{font-size:clamp(40px,8vw,72px);font-weight:800;line-height:1.1;margin-bottom:24px;letter-spacing:-2px;background:linear-gradient(180deg,#fff 0%,#94a3b8 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero p{font-size:20px;color:var(--text-secondary);margin-bottom:48px;line-height:1.7}.hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:16px 32px;border-radius:var(--radius);font-weight:600;font-size:15px;text-decoration:none;transition:var(--transition);border:none;cursor:pointer}.btn-primary{background:var(--accent-gradient);color:white;box-shadow:0 4px 20px rgba(99,102,241,0.4)}.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(99,102,241,0.5)}.btn-outline{background:transparent;border:1px solid var(--border-hover);color:var(--text-primary);backdrop-filter:blur(10px)}.btn-outline:hover{background:var(--bg-glass);border-color:var(--accent-1);transform:translateY(-3px)}.btn-lg{padding:18px 40px;font-size:16px}.btn-sm{padding:10px 20px;font-size:13px}.btn-block{width:100%}.features{padding:120px 0}.section-header{text-align:center;margin-bottom:64px}.section-header h2{font-size:42px;font-weight:800;margin-bottom:16px;letter-spacing:-1px}.section-header p{font-size:18px;color:var(--text-secondary);max-width:600px;margin:0 auto}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}.feature-card{background:var(--bg-card);border:1px solid var(--border-color);padding:40px;border-radius:var(--radius-lg);transition:var(--transition);position:relative;overflow:hidden}.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--accent-gradient);opacity:0;transition:var(--transition)}.feature-card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:translateY(-8px);box-shadow:var(--glow-card)}.feature-card:hover::before{opacity:1}.feature-icon{width:64px;height:64px;background:var(--bg-glass);border:1px solid var(--border-color);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:24px}.feature-card h3{font-size:20px;font-weight:700;margin-bottom:12px;color:var(--text-primary)}.feature-card p{color:var(--text-secondary);font-size:15px;line-height:1.7}.stats-section{padding:80px 0;background:var(--bg-secondary);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px}.stat-item{text-align:center}.stat-number{font-size:48px;font-weight:800;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:8px}.stat-label{font-size:14px;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px}.games-section{padding:100px 0;background:var(--bg-secondary);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}.games-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}.game-card{display:flex;align-items:center;gap:20px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:28px 28px;text-decoration:none;transition:var(--transition);position:relative;overflow:hidden}.game-card::before{content:'';position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--accent-gradient);opacity:0;transition:var(--transition)}.game-card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:translateY(-4px);box-shadow:var(--glow-card)}.game-card:hover::before{opacity:1}.game-card:hover .game-play svg{transform:translateX(4px)}.game-icon{font-size:36px;flex-shrink:0;width:60px;height:60px;display:flex;align-items:center;justify-content:center;background:var(--bg-glass);border-radius:var(--radius);border:1px solid var(--border-color)}.game-info{flex:1;min-width:0}.game-info h3{font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:6px}.game-info p{font-size:14px;color:var(--text-secondary);line-height:1.5}.game-play{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:14px;font-weight:600;flex-shrink:0;transition:var(--transition)}.game-card:hover .game-play{color:var(--accent-1)}.game-play svg{transition:transform 0.3s var(--ease-out)}.game-card-flappy::before{background:linear-gradient(180deg,#2ecc71,#27ae60)}.game-card-tetris::before{background:linear-gradient(180deg,#3498db,#2980b9)}.game-card-snake::before{background:linear-gradient(180deg,#e74c3c,#c0392b)}.game-card-run::before{background:linear-gradient(180deg,#f39c12,#e67e22)}.game-card-memory::before{background:linear-gradient(180deg,#9b59b6,#8e44ad)}.game-card-spelling::before{background:linear-gradient(180deg,#e91e63,#c2185b)}.auth-container{min-height:calc(100vh - 72px);display:flex;align-items:center;justify-content:center;padding:60px 24px}.auth-card{background:var(--bg-card);border:1px solid var(--border-color);padding:48px;border-radius:var(--radius-xl);width:100%;max-width:420px;backdrop-filter:blur(20px)}.auth-card h2{text-align:center;font-size:28px;font-weight:800;margin-bottom:8px;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.auth-card .subtitle{text-align:center;color:var(--text-secondary);margin-bottom:40px;font-size:15px}.form-group{margin-bottom:24px}.form-group label{display:block;margin-bottom:10px;font-weight:600;color:var(--text-primary);font-size:14px}.form-group input,.form-group textarea,.form-group select{width:100%;padding:14px 18px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius);font-size:15px;color:var(--text-primary);transition:var(--transition);font-family:inherit}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--accent-1);box-shadow:0 0 0 4px rgba(99,102,241,0.15)}.form-group input::placeholder{color:var(--text-muted)}.form-footer{text-align:center;margin-top:32px;color:var(--text-secondary);font-size:14px}.form-footer a{color:var(--accent-1);text-decoration:none;font-weight:600}.form-footer a:hover{text-decoration:underline}.dashboard{padding:60px 0;min-height:calc(100vh - 72px)}.welcome-header{margin-bottom:48px}.welcome-header h1{font-size:36px;font-weight:800;margin-bottom:8px}.welcome-header .user-info{color:var(--text-secondary);font-size:15px}.modules-section h2{font-size:24px;font-weight:700;margin-bottom:24px;color:var(--text-secondary)}.module-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.module-card{background:var(--bg-card);border:1px solid var(--border-color);padding:32px;border-radius:var(--radius-lg);text-decoration:none;color:inherit;display:block;transition:var(--transition);position:relative;overflow:hidden}.module-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--accent-gradient);transform:scaleX(0);transform-origin:left;transition:var(--transition)}.module-card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:translateY(-4px);box-shadow:var(--glow-card)}.module-card:hover::before{transform:scaleX(1)}.module-icon{font-size:40px;margin-bottom:20px;display:block}.module-card h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--text-primary)}.module-card p{color:var(--text-secondary);font-size:14px}.news-page,.news-detail-page,.news-form-page{padding:60px 0;min-height:calc(100vh - 72px)}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:48px;flex-wrap:wrap;gap:20px}.page-header h1{font-size:32px;font-weight:800}.header-actions{display:flex;gap:12px}.news-list{display:flex;flex-direction:column;gap:20px}.news-item{background:var(--bg-card);border:1px solid var(--border-color);padding:32px;border-radius:var(--radius-lg);transition:var(--transition)}.news-item:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:translateX(8px)}.news-meta{display:flex;gap:20px;margin-bottom:16px;font-size:13px;color:var(--text-muted)}.news-meta span{display:flex;align-items:center;gap:6px}.news-item h2{font-size:20px;font-weight:700;margin-bottom:12px}.news-item h2 a{color:var(--text-primary);text-decoration:none;transition:var(--transition)}.news-item h2 a:hover{color:var(--accent-1)}.news-excerpt{color:var(--text-secondary);line-height:1.8;margin-bottom:20px}.news-footer{display:flex;justify-content:space-between;align-items:center;padding-top:20px;border-top:1px solid var(--border-color)}.read-more{color:var(--accent-1);text-decoration:none;font-weight:600;font-size:14px}.read-more:hover{text-decoration:underline}.news-detail{background:var(--bg-card);border:1px solid var(--border-color);padding:48px;border-radius:var(--radius-xl);max-width:800px;margin:0 auto}.news-header{margin-bottom:40px}.news-header h1{font-size:32px;font-weight:800;margin-bottom:20px;line-height:1.3}.news-content{font-size:16px;line-height:2;color:var(--text-secondary);white-space:pre-wrap}.badge{display:inline-flex;align-items:center;padding:6px 12px;border-radius:var(--radius);font-size:12px;font-weight:600}.badge-secondary{background:var(--bg-glass);color:var(--text-secondary)}.badge-danger{background:rgba(239,68,68,0.15);color:#ef4444}.badge-success{background:rgba(16,185,129,0.15);color:#10b981}.badge-primary{background:rgba(99,102,241,0.15);color:var(--accent-1)}.admin-dashboard{padding:60px 0;min-height:calc(100vh - 72px)}.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:48px;flex-wrap:wrap;gap:20px}.admin-header h1{font-size:32px;font-weight:800}.footer{padding:40px 0;border-top:1px solid var(--border-color);text-align:center;color:var(--text-muted);font-size:14px}.announcement-banner{background:linear-gradient(135deg,#fef3c7 0%,#fde68a 100%);border-bottom:1px solid #fcd34d;font-size:14px;position:fixed;top:72px;left:0;right:0;z-index:1001}.alert{padding:16px 20px;border-radius:var(--radius);margin-bottom:24px;font-size:14px}.alert-success{background:rgba(16,185,129,0.15);border:1px solid rgba(16,185,129,0.3);color:#10b981}.alert-danger{background:rgba(239,68,68,0.15);border:1px solid rgba(239,68,68,0.3);color:#ef4444}.alert-warning{background:rgba(245,158,11,0.15);border:1px solid rgba(245,158,11,0.3);color:#f59e0b}.alert-info{background:rgba(59,130,246,0.15);border:1px solid rgba(59,130,246,0.3);color:#3b82f6}.text-center{text-align:center}.text-muted{color:var(--text-muted)}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}