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a{text-decoration:none;color:var(--text-dim);font-weight:600;font-size:.95rem;transition:color .2s ease;text-shadow:none}.navbar-links a:hover{color:var(--primary-color)}.btn-join-game,.btn-login-nav,.btn-signup-nav{padding:8px 20px;font-weight:700;font-size:.9rem;border-radius:100px;cursor:pointer;border:none;transition:all .2s ease}.btn-join-game{background:var(--bg-light);color:var(--secondary-color)}.btn-join-game:hover{background:#dbeafe}.btn-login-nav{background:transparent;color:var(--text-dim)}.btn-login-nav:hover{color:var(--primary-color)}.btn-signup-nav{background:var(--primary-gradient);color:#fff}.btn-signup-nav:hover{transform:translateY(-1px);box-shadow:0 4px 10px #6366f14d}.mobile-toggle{display:none}.hero-section{position:relative;z-index:1;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:130px 20px 40px}.hero-content{max-width:800px;animation:bounceIn .8s cubic-bezier(.175,.885,.32,1.275)}.hero-title{font-size:clamp(2.5rem,5vw,4rem);font-weight:900;line-height:1.1;margin-bottom:24px;color:var(--text-dark)}.highlight-text{color:var(--primary-color);position:relative;display:inline-block}.floating-topics-container{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0;overflow:hidden}.floating-topic{position:absolute;padding:10px 20px;border-radius:100px;color:#fff;font-weight:800;font-size:1.1rem;box-shadow:0 4px 15px #0000001a;opacity:.8;animation:floatAnimation 8s ease-in-out infinite alternate;white-space:nowrap}@keyframes floatAnimation{0%{transform:translateY(0) scale(1) rotate(var(--rotate))}50%{transform:translateY(-20px) scale(1.05) rotate(calc(var(--rotate) + 5deg))}to{transform:translateY(10px) scale(.95) rotate(calc(var(--rotate) - 5deg))}}.highlight-text:after{content:"";position:absolute;bottom:5px;left:0;width:100%;height:12px;background:#f59e0b4d;z-index:-1;border-radius:4px;transform:rotate(-2deg)}.hero-subtitle{font-size:clamp(1.1rem,2vw,1.25rem);line-height:1.6;color:var(--text-dim);margin-bottom:40px;font-weight:700}.hero-action-box{background:#fff;padding:24px;border-radius:var(--radius-lg);box-shadow:var(--shadow-chunky);border:2px solid #E5E7EB;display:inline-flex;flex-direction:column;gap:16px;max-width:450px;width:100%;margin:0 auto}.pin-input{width:100%;padding:16px 20px;font-size:1.5rem;font-weight:900;text-align:center;border:2px solid #E5E7EB;border-radius:var(--radius-md);outline:none;background:#f9fafb;color:var(--text-dark);letter-spacing:2px}.pin-input:focus{border-color:var(--secondary-color);background:#fff;box-shadow:0 0 0 4px #1368ce33}.pin-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 4px #6366f11a;background:#fff}.hero-btn-primary{background:var(--secondary-color);color:#fff;font-weight:900;font-size:1.2rem;padding:16px 40px;border:none;border-radius:var(--radius-md);cursor:pointer;border-bottom:4px solid #0e4c96;transition:var(--transition-fast);display:flex;align-items:center;justify-content:center;gap:12px;width:100%}.hero-btn-primary:hover{transform:translateY(2px);border-bottom-width:2px;margin-top:2px}.hero-btn-primary:active{transform:translateY(4px);border-bottom-width:0px;margin-top:4px}@keyframes bounceIn{0%{opacity:0;transform:scale(.95) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}.lobby-section{padding:40px 5%;max-width:1200px;margin:0 auto}.section-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:30px}.section-title{font-size:clamp(1.8rem,3.5vw,2.2rem);font-weight:900;color:var(--text-dark);display:flex;align-items:center;gap:12px}.section-title .icon-bg{background:#6366f11a;color:var(--primary-color);padding:10px;border-radius:12px;display:flex}.lobby-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px}.room-card{background:#fff;border-radius:var(--radius-lg);padding:24px;border:2px solid #E5E7EB;box-shadow:var(--shadow-chunky);position:relative;display:flex;flex-direction:column;gap:16px;transition:var(--transition-fast)}.room-card:hover{transform:translateY(-5px);box-shadow:var(--card-hover-shadow);border-color:#6366f14d}.room-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}.room-tag{font-size:.8rem;font-weight:700;padding:4px 10px;border-radius:100px;text-transform:uppercase;letter-spacing:.5px}.tag-math{background:#eef2ff;color:#4f46e5}.tag-science{background:#ecfdf5;color:#059669}.tag-culture{background:#fffbeb;color:#d97706}.room-title{font-size:1.3rem;font-weight:800;color:var(--text-dark);margin-bottom:8px;line-height:1.3}.room-host{font-size:.95rem;color:var(--text-dim);display:flex;align-items:center;gap:6px;margin-bottom:16px}.room-details{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}.detail-row{display:flex;align-items:center;gap:10px;color:var(--text-dim);font-size:.95rem;font-weight:500}.room-progress{width:100%;height:10px;background:#e5e7eb;border-radius:100px;overflow:hidden;margin-bottom:8px}.progress-fill{height:100%;border-radius:100px;background:var(--secondary-color);transition:width .5s ease}.progress-fill.full{background:var(--accent-red)}.room-footer{display:flex;justify-content:space-between;align-items:center}.players-count{font-size:.9rem;font-weight:700;color:var(--text-dim)}.btn-join-room{width:100%;background:var(--primary-color);color:#fff;border:none;padding:12px;font-weight:900;font-size:1.1rem;border-radius:var(--radius-md);cursor:pointer;border-bottom:4px solid #280a5e;transition:var(--transition-fast)}.btn-join-room:hover{background:var(--secondary-color);color:#fff}.btn-full-room{background:#fef2f2;color:var(--accent-red);font-weight:700;padding:10px 20px;border-radius:var(--radius-sm);border:none;cursor:not-allowed}.leaderboard-section{padding:60px 5%;max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.podium-container{display:flex;align-items:flex-end;justify-content:center;gap:12px;height:350px}.podium-step{display:flex;flex-direction:column;align-items:center;width:110px;position:relative}.podium-avatar{width:60px;height:60px;border-radius:50%;margin-bottom:12px;border:3px solid white;box-shadow:0 4px 10px #0000001a;background:#e5e7eb;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.3rem;color:var(--text-dark)}.podium-name{font-weight:800;color:var(--text-dark);margin-bottom:4px;text-align:center}.podium-xp{font-weight:700;color:var(--primary-color);font-size:.9rem;margin-bottom:16px}.podium-block{width:100%;background:#fff;border-radius:12px 12px 0 0;display:flex;justify-content:center;padding-top:15px;box-shadow:var(--card-shadow);border:1px solid #E5E7EB;border-bottom:none}.podium-block span{font-size:1.8rem;font-weight:900}.step-1 .podium-block{height:160px;background:linear-gradient(to bottom,#fef3c7,#fff);border-color:#fcd34d}.step-1 .podium-avatar{border-color:#f59e0b;background:#fef3c7}.step-1 .podium-block span{color:#f59e0b}.step-1 .crown-icon{position:absolute;top:-30px;color:#f59e0b}.step-2 .podium-block{height:120px;background:linear-gradient(to bottom,#f3f4f6,#fff);border-color:#d1d5db}.step-2 .podium-avatar{border-color:#9ca3af;background:#f3f4f6}.step-2 .podium-block span{color:#9ca3af}.step-3 .podium-block{height:80px;background:linear-gradient(to bottom,#ffedd5,#fff);border-color:#fdba74}.step-3 .podium-avatar{border-color:#ea580c;background:#ffedd5}.step-3 .podium-block span{color:#ea580c}.leaderboard-list{background:#fff;border-radius:var(--radius-lg);padding:24px;box-shadow:var(--card-shadow);border:1px solid #E5E7EB}.leaderboard-row{display:flex;align-items:center;padding:12px 0;border-bottom:1px solid #F3F4F6}.leaderboard-row:last-child{border-bottom:none}.rank-num{width:30px;font-weight:800;color:var(--text-dim)}.player-info{flex-grow:1;display:flex;align-items:center;gap:12px}.player-avatar-small{width:36px;height:36px;border-radius:50%;background:#e0e7ff;color:#4f46e5;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}.player-name{font-weight:700;color:var(--text-dark)}.player-level{font-size:.8rem;color:var(--text-dim);background:#f3f4f6;padding:2px 8px;border-radius:10px}.player-score{font-weight:800;color:var(--primary-color)}.landing-footer{border-top:1px solid #E5E7EB;padding:40px 5%;background:#fff;margin-top:40px}.footer-content{display:flex;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto}.footer-brand h2{font-size:1.5rem;font-weight:900;margin:0 0 8px;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.footer-links{display:flex;gap:30px}.footer-links a{color:var(--text-dim);text-decoration:none;font-weight:600}.footer-links a:hover{color:var(--primary-color)}@media(max-width:900px){.landing-navbar{width:100%;border-radius:0;top:0;border-left:none;border-right:none;border-top:none}.mobile-toggle{display:block;background:none;border:none;cursor:pointer;color:var(--text-dark)}.navbar-links{display:none;position:absolute;top:64px;left:0;width:100%;background:#fffffff2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);flex-direction:column;padding:20px;border-bottom:1px solid var(--border-soft);margin:0}.navbar-links.open{display:flex}.navbar-right .hide-mobile{display:none!important}.show-mobile-flex{display:flex!important}.leaderboard-section{grid-template-columns:1fr;gap:40px}.hero-section{padding-top:100px}.footer-content{flex-direction:column;gap:20px;text-align:center}}.text-dark{color:var(--text-dark)!important}.ai-highlight-badge{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,#6366f11a,#ec48991a);color:var(--primary-color);font-weight:700;font-size:.9rem;padding:6px 16px;border-radius:100px;margin-bottom:20px;border:1px solid rgba(99,102,241,.2);animation:pulseGlow 2s infinite alternate}@keyframes pulseGlow{0%{box-shadow:0 0 5px #6366f133}to{box-shadow:0 0 15px #6366f180}}.ai-icon{color:var(--accent-pink)}.room-badge.finished{position:absolute;top:16px;right:16px;background:#f3f4f6;color:#4b5563;font-size:.8rem;font-weight:800;padding:4px 10px;border-radius:6px;border:1px solid #E5E7EB;text-transform:uppercase}.view-all-container{display:flex;justify-content:center;margin-top:30px}.btn-view-all{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--primary-color);border:2px solid var(--primary-color);padding:10px 24px;border-radius:100px;font-weight:700;cursor:pointer;transition:all .2s}.btn-view-all:hover{background:var(--primary-color);color:#fff}.period-filters{display:flex;gap:12px;margin-bottom:24px}.period-filters button{background:#fff;border:1px solid #E5E7EB;color:var(--text-dim);padding:8px 16px;border-radius:100px;font-weight:600;cursor:pointer;transition:all .2s}.period-filters button.active,.period-filters button:hover{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.modal-overlay{position:fixed;inset:0;background:#00000080;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:flex;align-items:center;justify-content:center;z-index:9999;padding:20px}.modal-content{background:#fff;border-radius:var(--radius-lg);padding:40px;width:100%;max-width:500px;position:relative;box-shadow:0 25px 50px -12px #00000040;animation:popIn .3s cubic-bezier(.175,.885,.32,1.275);text-align:center}.modal-close{position:absolute;top:16px;right:16px;background:none;border:none;font-size:1.5rem;color:var(--text-dim);cursor:pointer}.modal-close:hover{color:var(--text-dark)}.modal-success h3{font-size:1.5rem;font-weight:800;margin-bottom:20px}.modal-info-box{background:var(--bg-light);padding:20px;border-radius:var(--radius-md);margin-bottom:24px;display:flex;flex-direction:column;align-items:center;gap:12px}.modal-info-box p{color:var(--text-dim);font-size:.95rem;line-height:1.5;margin:0}.btn-primary-modal{background:var(--primary-gradient);color:#fff;font-weight:700;padding:14px 30px;border-radius:100px;border:none;cursor:pointer;width:100%;font-size:1.1rem;transition:transform .2s}.btn-primary-modal:hover{transform:scale(1.02)}.loading-spinner{font-weight:700;color:var(--text-dim);text-align:center;padding:20px}.empty-state{text-align:center;color:var(--text-dim);font-size:1.1rem;padding:40px;background:#fff;border-radius:var(--radius-lg);border:1px dashed #D1D5DB}@keyframes popIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.lobby-container{display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px;background-color:#0b0f19;font-family:Inter,sans-serif;color:#fff;background-image:radial-gradient(circle at 15% 30%,rgba(99,102,241,.15) 0%,transparent 40%),radial-gradient(circle at 85% 60%,rgba(236,72,153,.15) 0%,transparent 40%)}.kahoot-card{background:#151c2cd9;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);width:100%;max-width:420px;border-radius:24px;padding:48px 40px;border:1px solid rgba(255,255,255,.08);box-shadow:0 20px 50px #00000080,0 0 40px #6366f126;display:flex;flex-direction:column;align-items:center;gap:24px;animation:fadeUp .6s cubic-bezier(.16,1,.3,1) forwards}.kahoot-logo-title{font-size:2.5rem;font-weight:900;color:#fff;margin:0 0 10px;text-align:center;letter-spacing:-1px;background:linear-gradient(135deg,#6366f1,#ec4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.kahoot-input{width:100%;padding:16px;font-size:1.1rem;font-weight:600;text-align:center;border:1px solid rgba(255,255,255,.1);border-radius:12px;outline:none;transition:all .2s ease;color:#fff;background:#0b0f1999;font-family:Inter,sans-serif}.kahoot-input:focus{border-color:#6366f1;box-shadow:0 0 0 4px #6366f126;transform:translateY(-1px);background:#0b0f19cc}.kahoot-input::-moz-placeholder{color:#64748b;font-weight:500}.kahoot-input::placeholder{color:#64748b;font-weight:500}.kahoot-btn{width:100%;padding:16px;font-size:1.1rem;font-weight:700;color:#fff;background:linear-gradient(135deg,#6366f1,#ec4899);border:none;border-radius:12px;cursor:pointer;box-shadow:0 4px 15px #6366f14d;transition:all .2s ease;margin-top:8px;font-family:Inter,sans-serif;display:flex;justify-content:center;align-items:center}.kahoot-btn:hover{transform:translateY(-2px);box-shadow:0 0 40px #ec489966}.kahoot-btn:active{transform:translateY(0)}.kahoot-btn:disabled{background:#1e293b;color:#475569;cursor:not-allowed;box-shadow:none;transform:none}.status-text{color:#f87171;font-weight:600;font-size:.95rem;text-align:center;margin-top:10px;background:#ef44441a;padding:12px;border-radius:8px;border:1px solid rgba(239,68,68,.2);width:100%}@keyframes fadeUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@media(max-width:480px){.lobby-container{padding:15px}.kahoot-card{padding:40px 24px;max-width:100%;border-radius:20px}.kahoot-logo-title{font-size:2rem}.kahoot-input,.kahoot-btn{padding:14px;font-size:1rem}}