@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap";:root{--primary:#6c63ff;--primary-dark:#5a52d5;--primary-light:#ede9ff;--secondary:#f97316;--success:#16a34a;--success-light:#dcfce7;--warning:#d97706;--warning-light:#fef3c7;--danger:#dc2626;--danger-light:#fee2e2;--info:#0284c7;--info-light:#e0f2fe;--bg:#f8fafc;--bg-white:#fff;--bg-card:#fff;--bg-card2:#f1f5f9;--bg-hover:#f8fafc;--text:#0f172a;--text-muted:#64748b;--text-light:#94a3b8;--border:#e2e8f0;--border-dark:#cbd5e1;--radius:12px;--radius-lg:16px;--shadow-sm:0 1px 3px #0000000f, 0 1px 2px #0000000a;--shadow:0 4px 16px #00000014, 0 1px 4px #0000000a;--shadow-lg:0 10px 40px #0000001a, 0 4px 12px #0000000d}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Inter,Segoe UI,system-ui,sans-serif;font-size:15px;line-height:1.6}.main-content{max-width:1200px;min-height:calc(100vh - 64px);margin:0 auto;padding:28px 20px}.navbar{background:var(--bg-white);border-bottom:1px solid var(--border);z-index:100;height:64px;box-shadow:var(--shadow-sm);justify-content:space-between;align-items:center;padding:0 28px;display:flex;position:sticky;top:0}.navbar-brand{color:var(--primary);letter-spacing:-.3px;font-size:1.3rem;font-weight:800;text-decoration:none}.navbar-links{align-items:center;gap:4px;display:flex}.nav-link{color:var(--text-muted);border-radius:8px;padding:7px 14px;font-size:.875rem;font-weight:500;text-decoration:none;transition:all .15s}.nav-link:hover{color:var(--text);background:var(--bg-card2)}.nav-link.active{color:var(--primary);background:var(--primary-light);font-weight:600}.btn{cursor:pointer;white-space:nowrap;border:none;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:8px 18px;font-size:.875rem;font-weight:600;text-decoration:none;transition:all .15s;display:inline-flex}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 2px 8px #6c63ff4d}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 16px #6c63ff59}.btn-outline{color:var(--primary);border:1.5px solid var(--primary);background:0 0}.btn-outline:hover{background:var(--primary-light)}.btn-ghost{color:var(--text-muted);border:1.5px solid var(--border);background:0 0}.btn-ghost:hover{background:var(--bg-card2);color:var(--text);border-color:var(--border-dark)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#b91c1c;transform:translateY(-1px)}.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:#15803d;transform:translateY(-1px)}.btn-warning{background:var(--warning);color:#fff}.btn-sm{border-radius:6px;padding:5px 12px;font-size:.8rem}.btn-lg{border-radius:10px;padding:12px 32px;font-size:1rem}.btn-xl{border-radius:12px;padding:14px 40px;font-size:1.05rem}.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none!important;transform:none!important}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:24px}.card-hover:hover{box-shadow:var(--shadow);border-color:var(--primary-light);transition:all .2s}.card-grid{gap:16px;display:grid}.card-grid-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.card-grid-3{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.card-grid-4{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.form-group{margin-bottom:18px}.form-label{color:var(--text);margin-bottom:6px;font-size:.875rem;font-weight:600;display:block}.form-input,.form-select,.form-textarea{background:var(--bg-white);border:1.5px solid var(--border);width:100%;color:var(--text);border-radius:8px;padding:10px 14px;font-family:inherit;font-size:.9rem;transition:border-color .15s,box-shadow .15s}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #6c63ff1f}.form-input::placeholder{color:var(--text-light)}.form-select{cursor:pointer}.form-textarea{resize:vertical}.auth-page{background:linear-gradient(135deg,#f0edff 0%,#f8fafc 50%,#e0f2fe 100%);justify-content:center;align-items:center;min-height:calc(100vh - 64px);padding:24px;display:flex}.auth-card{background:var(--bg-white);border:1px solid var(--border);width:100%;max-width:460px;box-shadow:var(--shadow-lg);border-radius:20px;padding:40px}.page-header{margin-bottom:28px}.page-title{color:var(--text);letter-spacing:-.4px;font-size:1.75rem;font-weight:800}.page-subtitle{color:var(--text-muted);margin-top:4px;font-size:.9rem}.stat-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center;box-shadow:var(--shadow-sm);padding:24px 20px;transition:all .2s;position:relative;overflow:hidden}.stat-card:before{content:"";background:linear-gradient(90deg, var(--primary), #a78bfa);height:3px;position:absolute;top:0;left:0;right:0}.stat-card:hover{box-shadow:var(--shadow);border-color:var(--primary-light);transform:translateY(-3px)}.stat-icon{margin-bottom:8px;font-size:1.8rem}.stat-value{color:var(--primary);letter-spacing:-.5px;font-size:2rem;font-weight:800}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-top:4px;font-size:.78rem;font-weight:600}.quiz-container{max-width:720px;margin:0 auto}.question-card{background:var(--bg-white);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:20px;padding:36px}.question-number{color:var(--text-light);text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px;font-size:.8rem;font-weight:600}.question-text{color:var(--text);margin-bottom:28px;font-size:1.2rem;font-weight:700;line-height:1.55}.options-grid{gap:10px;display:grid}.option-btn{background:var(--bg-card2);border:1.5px solid var(--border);color:var(--text);text-align:left;cursor:pointer;border-radius:10px;width:100%;padding:14px 20px;font-size:.925rem;font-weight:500;transition:all .15s}.option-btn:hover:not(:disabled){border-color:var(--primary);background:var(--primary-light);color:var(--primary)}.option-btn.selected{border-color:var(--primary);background:var(--primary-light);color:var(--primary);font-weight:600}.option-btn.correct{border-color:var(--success);background:var(--success-light);color:var(--success);font-weight:600}.option-btn.wrong{border-color:var(--danger);background:var(--danger-light);color:var(--danger);font-weight:600}.option-btn:disabled{cursor:default}.progress-bar{background:var(--border);border-radius:99px;height:6px;margin:12px 0;overflow:hidden}.progress-fill{background:linear-gradient(90deg, var(--primary), #a78bfa);border-radius:99px;height:100%;transition:width .4s}.timer{color:var(--warning);background:var(--warning-light);border-radius:99px;align-items:center;gap:6px;padding:5px 12px;font-size:1rem;font-weight:700;display:inline-flex}.timer.urgent{color:var(--danger);background:var(--danger-light);animation:1s infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.65}}.leaderboard-item{background:var(--bg-white);border:1px solid var(--border);box-shadow:var(--shadow-sm);border-radius:12px;align-items:center;gap:16px;margin-bottom:8px;padding:14px 20px;transition:all .15s;display:flex}.leaderboard-item:hover{border-color:var(--primary);box-shadow:var(--shadow);transform:translate(2px)}.leaderboard-item.top-3{background:linear-gradient(135deg,#ffffef,#fff)}.rank-badge{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:.85rem;font-weight:800;display:flex}.rank-1{color:#fff;background:linear-gradient(135deg,gold,#f59e0b);box-shadow:0 2px 8px #f59e0b66}.rank-2{color:#fff;background:linear-gradient(135deg,#94a3b8,#64748b)}.rank-3{color:#fff;background:linear-gradient(135deg,#d97706,#b45309)}.rank-other{background:var(--bg-card2);color:var(--text-muted)}.badge-grid{flex-wrap:wrap;gap:8px;display:flex}.badge-item{background:var(--bg-card2);border:1px solid var(--border);border-radius:20px;align-items:center;gap:5px;padding:5px 12px;font-size:.78rem;font-weight:500;display:flex}.badge-rare{color:#1d4ed8;background:#eff6ff;border-color:#93c5fd}.badge-epic{color:#7c3aed;background:#faf5ff;border-color:#d8b4fe}.badge-legendary{color:#b45309;background:#fffbeb;border-color:#fcd34d}.mode-cards{grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:20px;margin:24px 0;display:grid}.mode-card{background:var(--bg-white);border:2px solid var(--border);text-align:center;cursor:pointer;box-shadow:var(--shadow-sm);border-radius:20px;padding:32px 20px;transition:all .25s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.mode-card:after{content:"";opacity:0;background:linear-gradient(135deg,#6c63ff0f,#a78bfa0f);transition:opacity .2s;position:absolute;inset:0}.mode-card:hover:after,.mode-card.selected:after{opacity:1}.mode-card:hover,.mode-card.selected{border-color:var(--primary);transform:translateY(-6px);box-shadow:0 12px 40px #6c63ff33}.mode-icon{margin-bottom:14px;font-size:3.2rem;display:block}.mode-title{color:var(--text);margin-bottom:8px;font-size:1.05rem;font-weight:800}.mode-desc{color:var(--text-muted);font-size:.82rem;line-height:1.5}.result-circle{background:linear-gradient(135deg, var(--primary-light), #e0e7ff);border:5px solid var(--primary);border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:150px;height:150px;margin:0 auto 24px;display:flex;box-shadow:0 0 0 10px #6c63ff14}.result-score{color:var(--primary);letter-spacing:-1px;font-size:2.4rem;font-weight:800}.result-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.72rem;font-weight:600}.loading-screen{flex-direction:column;justify-content:center;align-items:center;gap:16px;min-height:60vh;display:flex}.spinner{border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:40px;height:40px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.tabs{background:var(--bg-card2);border-radius:12px;gap:4px;margin-bottom:24px;padding:4px;display:flex}.tab-btn{cursor:pointer;color:var(--text-muted);background:0 0;border:none;border-radius:9px;flex:1;padding:9px 16px;font-family:inherit;font-size:.875rem;font-weight:600;transition:all .2s}.tab-btn.active{background:var(--bg-white);color:var(--primary);box-shadow:var(--shadow-sm)}.tab-btn:hover:not(.active){color:var(--text);background:#fff9}.hero-section{text-align:center;padding:72px 20px 56px;position:relative;overflow:hidden}.hero-section:before{content:"";pointer-events:none;background:radial-gradient(circle,#6c63ff14 0%,#0000 70%);border-radius:50%;width:700px;height:700px;position:absolute;top:-120px;left:50%;transform:translate(-50%)}.hero-badge{background:linear-gradient(135deg, var(--primary-light), #e0f2fe);color:var(--primary);letter-spacing:.04em;text-transform:uppercase;border:1px solid #6c63ff33;border-radius:99px;align-items:center;gap:6px;margin-bottom:22px;padding:6px 16px;font-size:.78rem;font-weight:700;display:inline-flex;box-shadow:0 2px 8px #6c63ff1a}.hero-title{letter-spacing:-1.5px;color:var(--text);margin-bottom:20px;font-size:clamp(2.2rem,5.5vw,3.8rem);font-weight:900;line-height:1.1}.hero-title span{background:linear-gradient(135deg, var(--primary) 0%, #a78bfa 50%, #60a5fa 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.hero-subtitle{color:var(--text-muted);max-width:560px;margin-bottom:40px;margin-left:auto;margin-right:auto;font-size:1.1rem;line-height:1.75}.hero-stats-bar{background:var(--bg-white);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:16px;flex-wrap:wrap;justify-content:center;gap:0;max-width:600px;margin:48px auto 0;padding:20px 32px;display:flex}.hero-stat{text-align:center;flex:1;min-width:100px;padding:4px 16px}.hero-stat:not(:last-child){border-right:1px solid var(--border)}.hero-stat-val{color:var(--primary);letter-spacing:-.5px;font-size:1.7rem;font-weight:900}.hero-stat-lbl{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-top:2px;font-size:.75rem;font-weight:600}.table{border-collapse:collapse;width:100%;font-size:.875rem}.table th{text-align:left;background:var(--bg-card2);color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;border-bottom:1px solid var(--border);padding:11px 14px;font-size:.75rem;font-weight:700}.table th:first-child{border-radius:8px 0 0 8px}.table th:last-child{border-radius:0 8px 8px 0}.table td{border-bottom:1px solid var(--border);color:var(--text);vertical-align:middle;padding:13px 14px}.table tr:last-child td{border-bottom:none}.table tr:hover td{background:var(--bg-hover)}.input-with-icon{align-items:center;display:flex;position:relative}.input-with-icon .form-input{width:100%;padding-right:44px}.eye-btn{cursor:pointer;color:var(--text-light);background:0 0;border:none;align-items:center;padding:4px;transition:color .15s;display:flex;position:absolute;right:12px}.eye-btn:hover{color:var(--primary)}.field-error{color:var(--danger);align-items:center;gap:4px;margin-top:5px;font-size:.78rem;font-weight:500;display:flex}.field-error:before{content:"⚠"}.input-error{border-color:var(--danger)!important}.input-error:focus{box-shadow:0 0 0 3px #dc26261f!important}.role-card{background:var(--bg-card2);border:2px solid var(--border);text-align:center;cursor:pointer;border-radius:12px;padding:14px 10px;transition:all .15s}.role-card:hover{border-color:var(--primary);background:var(--primary-light)}.role-card.selected{border-color:var(--primary);background:var(--primary-light);box-shadow:0 0 0 3px #6c63ff1f}.btn-spinner{border:2px solid #fff6;border-top-color:#fff;border-radius:50%;width:16px;height:16px;animation:.7s linear infinite spin;display:inline-block}.link-btn{cursor:pointer;color:var(--primary);font-size:inherit;text-underline-offset:2px;background:0 0;border:none;padding:0;font-weight:600;text-decoration:underline}.link-btn:hover{color:var(--primary-dark)}.profile-banner{background:linear-gradient(135deg, var(--primary) 0%, #a78bfa 60%, #60a5fa 100%);color:#fff;border-radius:20px;margin-bottom:24px;padding:36px 32px;position:relative;overflow:hidden}.profile-banner:before{content:"";background:#ffffff14;border-radius:50%;width:200px;height:200px;position:absolute;top:-60px;right:-60px}.profile-banner:after{content:"";background:#ffffff0f;border-radius:50%;width:120px;height:120px;position:absolute;bottom:-40px;left:40px}.profile-avatar{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#ffffff40;border:3px solid #ffffff80;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:80px;height:80px;font-size:2.6rem;display:flex;box-shadow:0 4px 16px #00000026}.dash-welcome{background:linear-gradient(135deg, var(--primary) 0%, #7c3aed 60%, #0ea5e9 100%);color:#fff;border-radius:20px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;padding:28px 32px;display:flex;position:relative;overflow:hidden}.dash-welcome:before{content:"";background:#ffffff12;border-radius:50%;width:160px;height:160px;position:absolute;top:-40px;right:-40px}.dash-welcome:after{content:"";background:#ffffff0d;border-radius:50%;width:120px;height:120px;position:absolute;bottom:-50px;left:30%}.feature-card{background:var(--bg-white);border:1px solid var(--border);text-align:center;box-shadow:var(--shadow-sm);border-radius:18px;padding:28px 22px;transition:all .25s}.feature-card:hover{box-shadow:var(--shadow-lg);border-color:var(--primary-light);transform:translateY(-4px)}.feature-icon-wrap{background:linear-gradient(135deg, var(--primary-light), #e0f2fe);border-radius:16px;justify-content:center;align-items:center;width:56px;height:56px;margin:0 auto 16px;font-size:1.6rem;display:flex;box-shadow:0 2px 8px #6c63ff1f}.admin-stat-card{background:var(--bg-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border);align-items:center;gap:16px;padding:22px 24px;transition:all .2s;display:flex}.admin-stat-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.admin-stat-icon{border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:52px;height:52px;font-size:1.5rem;display:flex}.admin-stat-info{flex:1}.admin-stat-num{color:var(--text);letter-spacing:-.5px;font-size:1.8rem;font-weight:800}.admin-stat-lbl{color:var(--text-muted);margin-top:2px;font-size:.8rem;font-weight:500}.diff-badge{text-transform:capitalize;border-radius:99px;padding:3px 10px;font-size:.75rem;font-weight:700;display:inline-block}.diff-easy{background:var(--success-light);color:var(--success)}.diff-medium{background:var(--warning-light);color:var(--warning)}.diff-hard{background:var(--danger-light);color:var(--danger)}.audience-badge{background:var(--info-light);color:var(--info);text-transform:capitalize;border-radius:99px;padding:3px 10px;font-size:.75rem;font-weight:600;display:inline-block}.text-center{text-align:center}.text-muted{color:var(--text-muted)}.text-primary{color:var(--primary)}.text-success{color:var(--success)}.text-danger{color:var(--danger)}.text-warning{color:var(--warning)}.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.mt-8{margin-top:32px}.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.flex{display:flex}.flex-between{justify-content:space-between;align-items:center;display:flex}.flex-center{justify-content:center;align-items:center;display:flex}.items-center{align-items:center}.flex-wrap{flex-wrap:wrap}.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}.w-full{width:100%}.divider{border:none;border-top:1px solid var(--border);margin:20px 0}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border-dark);border-radius:99px}::-webkit-scrollbar-thumb:hover{background:var(--text-light)}@media (width<=768px){.navbar{padding:0 16px}.navbar-links .nav-link:not(:last-child):not(:nth-last-child(2)){display:none}.main-content{padding:16px 14px}.auth-card{padding:28px 20px}.question-card{padding:24px 18px}.page-title{font-size:1.4rem}}@media (width<=480px){.navbar-links .nav-link{display:none}.card-grid-3,.card-grid-4{grid-template-columns:repeat(2,1fr)}.mode-cards{grid-template-columns:1fr}}