@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap";.toast-container{position:fixed;top:80px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:12px;max-width:400px;pointer-events:none}.toast-wrapper{pointer-events:auto;animation:toastSlideIn .3s ease-out forwards;animation-delay:calc(var(--toast-index) * .05s)}.toast{display:flex;align-items:flex-start;gap:12px;padding:16px;border-radius:var(--radius-md);background:var(--bg-card);border:1px solid var(--border);box-shadow:var(--shadow-lg);min-width:300px}.toast-success{border-left:4px solid var(--success)}.toast-success .toast-icon{color:var(--success);background:var(--success-light)}.toast-error{border-left:4px solid var(--danger)}.toast-error .toast-icon{color:var(--danger);background:var(--danger-light)}.toast-warning{border-left:4px solid var(--warning)}.toast-warning .toast-icon{color:var(--warning);background:var(--warning-light)}.toast-info{border-left:4px solid var(--info)}.toast-info .toast-icon{color:var(--info);background:#3b82f626}.toast-icon{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex-shrink:0}.toast-content{flex:1;min-width:0}.toast-title{font-weight:600;font-size:14px;color:var(--text);margin-bottom:2px}.toast-message{font-size:13px;color:var(--text-secondary);line-height:1.4}.toast-dismiss{background:none;border:none;color:var(--text-muted);font-size:20px;cursor:pointer;padding:0;line-height:1;transition:color .2s;flex-shrink:0}.toast-dismiss:hover{color:var(--text)}@keyframes toastSlideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes toastSlideOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(100%)}}@media (max-width: 480px){.toast-container{left:12px;right:12px;max-width:none}.toast{min-width:auto}}.navbar{position:fixed;top:0;left:0;right:0;background:var(--darker);border-bottom:1px solid var(--border);z-index:1000}.navbar-container{max-width:1400px;margin:0 auto;padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between}.navbar-brand{display:flex;align-items:center;gap:10px;text-decoration:none}.brand-icon{font-size:24px}.brand-text{font-size:22px;font-weight:700;color:var(--primary);letter-spacing:-.5px}.navbar-menu{display:flex;align-items:center;gap:8px}.nav-link{padding:8px 16px;color:var(--text-muted);font-weight:500;font-size:14px;text-decoration:none;border-radius:4px;transition:all .2s}.nav-link:hover{color:var(--text);background:var(--card-bg);text-decoration:none}.nav-link.active{color:var(--primary);background:#9b59b61a}.admin-link{color:var(--danger)!important}.navbar-right{display:flex;align-items:center;gap:16px}.user-dropdown{position:relative}.user-btn{display:flex;align-items:center;gap:10px;padding:6px 12px;background:var(--card-bg);border:1px solid var(--border);border-radius:4px;cursor:pointer;color:var(--text)}.user-avatar{width:28px;height:28px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px}.user-name{font-weight:500;font-size:14px}.dropdown-arrow{font-size:8px;color:var(--text-muted)}.dropdown-menu{position:absolute;top:100%;right:0;margin-top:8px;background:var(--card-bg);border:1px solid var(--border);border-radius:4px;min-width:180px;display:none;box-shadow:0 4px 20px #0000004d}.user-dropdown:hover .dropdown-menu{display:block}.dropdown-item{display:block;width:100%;padding:10px 16px;color:var(--text);text-decoration:none;font-size:14px;background:none;border:none;text-align:left;cursor:pointer}.dropdown-item:hover{background:var(--darker);text-decoration:none}.dropdown-item.logout{color:var(--danger)}.dropdown-divider{border:none;border-top:1px solid var(--border);margin:4px 0}.mobile-menu-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:10px;background:none;border:none;cursor:pointer;z-index:1100}.hamburger-line{width:24px;height:2px;background:var(--text);border-radius:2px;transition:all .3s ease}.mobile-menu-toggle.open .hamburger-line:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.mobile-menu-toggle.open .hamburger-line:nth-child(2){opacity:0}.mobile-menu-toggle.open .hamburger-line:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;z-index:1050;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.mobile-menu{display:none;position:fixed;top:0;right:-300px;width:300px;height:100vh;background:var(--bg-card);border-left:1px solid var(--border);z-index:1100;transition:right .3s ease;overflow-y:auto}.mobile-menu.open{right:0}.mobile-menu-header{display:flex;align-items:center;gap:10px;padding:16px 20px;border-bottom:1px solid var(--border)}.mobile-menu-content{padding:20px}.mobile-user-info{display:flex;align-items:center;gap:12px;padding:16px;background:var(--bg-secondary);border-radius:var(--radius-md);margin-bottom:20px}.mobile-user-info .user-avatar.large{width:48px;height:48px;font-size:20px}.mobile-user-info .user-details{display:flex;flex-direction:column}.mobile-user-info .user-name{font-weight:600;color:var(--text)}.mobile-user-info .user-role{font-size:12px;color:var(--text-muted);text-transform:capitalize}.mobile-nav-section{margin-bottom:20px;padding-bottom:20px;border-bottom:1px solid var(--border)}.mobile-nav-link{display:flex;align-items:center;gap:12px;padding:14px 16px;color:var(--text);text-decoration:none;border-radius:var(--radius-md);font-weight:500;transition:all .2s}.mobile-nav-link:hover{background:var(--bg-hover);text-decoration:none}.mobile-nav-link.active{background:#8b5cf626;color:var(--primary)}.mobile-nav-link.admin{color:var(--danger)}.mobile-logout-btn{width:100%;padding:14px;background:var(--danger-light);color:var(--danger);border:1px solid var(--danger);border-radius:var(--radius-md);font-weight:600;cursor:pointer;transition:all .2s}.mobile-logout-btn:hover{background:var(--danger);color:#fff}.mobile-auth-section{display:flex;flex-direction:column;gap:12px;padding-top:20px}@media (max-width: 768px){.navbar-menu,.navbar-right{display:none}.mobile-menu-toggle{display:flex}.mobile-menu-overlay,.mobile-menu{display:block}}@media (max-width: 480px){.mobile-menu{width:100%;right:-100%}.navbar-container{padding:0 16px}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #8b5cf6;--primary-dark: #7c3aed;--primary-light: #a78bfa;--primary-glow: rgba(139, 92, 246, .4);--secondary: #06b6d4;--secondary-dark: #0891b2;--success: #10b981;--success-light: rgba(16, 185, 129, .15);--danger: #ef4444;--danger-light: rgba(239, 68, 68, .15);--warning: #f59e0b;--warning-light: rgba(245, 158, 11, .15);--info: #3b82f6;--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a24;--bg-card: #16161f;--bg-hover: #1e1e2a;--border: #2a2a3a;--border-light: #3a3a4a;--text: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);--gradient-dark: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .5);--shadow-glow: 0 0 30px var(--primary-glow);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--transition: all .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: all .3s cubic-bezier(.4, 0, .2, 1)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}code,.mono{font-family:JetBrains Mono,Consolas,monospace}a{color:var(--primary-light);text-decoration:none;transition:var(--transition)}a:hover{color:var(--primary)}.container{max-width:1280px;margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:none;border-radius:var(--radius-md);cursor:pointer;font-size:14px;font-weight:600;font-family:inherit;transition:var(--transition);text-decoration:none;position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:.5s}.btn:hover:before{left:100%}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-md),0 0 20px #8b5cf64d}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg),0 0 30px #8b5cf666}.btn-secondary{background:var(--bg-tertiary);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--border-light)}.btn-success{background:var(--success);color:#fff}.btn-danger{background:var(--danger);color:#fff}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg-tertiary);color:var(--text)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.btn-sm{padding:8px 16px;font-size:13px}.btn-lg{padding:16px 32px;font-size:16px}.btn-block{width:100%}.card{background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border);padding:24px;transition:var(--transition)}.card-hover:hover{border-color:var(--primary);box-shadow:var(--shadow-glow);transform:translateY(-4px)}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:600;font-size:14px;color:var(--text)}.form-group input,.form-group textarea,.form-group select{width:100%;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;font-family:inherit;background:var(--bg-secondary);color:var(--text);transition:var(--transition)}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #8b5cf633}.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted)}.form-group small{display:block;margin-top:6px;font-size:12px;color:var(--text-muted)}.alert{padding:14px 18px;border-radius:var(--radius-md);margin-bottom:20px;font-weight:500;display:flex;align-items:center;gap:10px;animation:slideIn .3s ease}@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.alert-error{background:var(--danger-light);color:var(--danger);border:1px solid var(--danger)}.alert-success{background:var(--success-light);color:var(--success);border:1px solid var(--success)}.alert-warning{background:var(--warning-light);color:var(--warning);border:1px solid var(--warning)}.badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:20px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}.badge-easy{background:var(--success-light);color:var(--success)}.badge-medium{background:var(--warning-light);color:var(--warning)}.badge-hard{background:var(--danger-light);color:var(--danger)}.badge-primary{background:#8b5cf626;color:var(--primary)}.badge-info{background:#06b6d426;color:var(--secondary)}.text-center{text-align:center}.text-muted{color:var(--text-muted)}.text-gradient{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes glow{0%,to{box-shadow:0 0 20px var(--primary-glow)}50%{box-shadow:0 0 40px var(--primary-glow)}}.animate-pulse{animation:pulse 2s infinite}.animate-spin{animation:spin 1s linear infinite}.animate-float{animation:float 3s ease-in-out infinite}.animate-glow{animation:glow 2s ease-in-out infinite}.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}.skeleton{background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--bg-hover) 50%,var(--bg-tertiary) 75%);background-size:200% 100%;animation:skeleton 1.5s infinite;border-radius:var(--radius-sm)}@keyframes skeleton{0%{background-position:200% 0}to{background-position:-200% 0}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--border-light)}::selection{background:var(--primary);color:#fff}[data-tooltip]{position:relative}[data-tooltip]:after{content:attr(data-tooltip);position:absolute;bottom:100%;left:50%;transform:translate(-50%);padding:6px 12px;background:var(--bg-tertiary);color:var(--text);font-size:12px;border-radius:var(--radius-sm);white-space:nowrap;opacity:0;visibility:hidden;transition:var(--transition);z-index:100}[data-tooltip]:hover:after{opacity:1;visibility:visible;bottom:calc(100% + 8px)}.page-loader{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:calc(100vh - 56px);gap:16px;color:var(--text-muted)}.loader-spinner{width:48px;height:48px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes confetti-fall{0%{transform:translateY(-100vh) rotate(0);opacity:1}to{transform:translateY(100vh) rotate(720deg);opacity:0}}.confetti-container{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:9999;overflow:hidden}.confetti{position:absolute;width:10px;height:10px;animation:confetti-fall 3s ease-out forwards}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.skip-link{position:absolute;top:-40px;left:0;background:var(--primary);color:#fff;padding:8px 16px;z-index:10000;transition:top .3s}.skip-link:focus{top:0}@media (prefers-contrast: high){:root{--border: #555;--text-muted: #999}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}body.high-contrast{--bg-primary: #000000;--bg-secondary: #0a0a0a;--bg-tertiary: #141414;--bg-card: #0a0a0a;--bg-hover: #1a1a1a;--border: #444444;--border-light: #666666;--text: #ffffff;--text-secondary: #cccccc;--text-muted: #999999;--primary: #a78bfa;--primary-light: #c4b5fd}body.high-contrast .card{border-width:2px}body.high-contrast .btn{border:2px solid currentColor}body.high-contrast a{text-decoration:underline}body.reduced-motion *,body.reduced-motion *:before,body.reduced-motion *:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}