:root {
      --void:#000;--abyss:#0a0a0a;--shadow:#111;--charcoal:#1a1a1a;--steel:#252525;
      --dried-blood:#4a1c1c;--crimson-dark:#6b1c1c;--rust:#8b3a3a;--ember:#a45a5a;
      --pulse:#c41e3a;
      --diff-easy:#4a6b52;--diff-medium:#6b6040;--diff-hard:#6b3535;
      --text-primary:#e8e8e8;--text-secondary:#a0a0a0;--text-muted:#666;--text-accent:#d4a5a5;
      --font-display:'Bebas Neue',Impact,sans-serif;
      --font-body:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
    }
    *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{background:var(--void);color:var(--text-primary);font-family:var(--font-body);min-height:100vh;overflow-x:hidden}
    body::before{content:'';position:fixed;inset:0;background:radial-gradient(ellipse at center,transparent 0%,rgba(0,0,0,.7) 100%);pointer-events:none;z-index:9999;opacity:.5}

    
    .demo-banner{background:rgba(196,30,58,.08);border-bottom:1px solid rgba(196,30,58,.2);padding:.5rem 2rem;display:flex;align-items:center;justify-content:space-between;font-size:.8rem;color:var(--ember)}
    .back-link{color:var(--text-muted);text-decoration:none;font-size:.8rem}
    .back-link:hover{color:var(--text-secondary)}

    
    .navbar{position:sticky;top:0;z-index:200;display:flex;align-items:center;justify-content:space-between;padding:.75rem 2rem;background:rgba(0,0,0,.88);backdrop-filter:blur(20px);border-bottom:1px solid rgba(100,100,100,.1);box-shadow:0 8px 40px rgba(0,0,0,.8)}
    .navbar::after{content:'';position:absolute;bottom:0;left:0;width:100%;height:2px;background:linear-gradient(90deg,transparent,#6b1c1c,#c41e3a,#6b1c1c,transparent);opacity:.6}
    .navbar-brand{font-family:var(--font-display);font-size:1.6rem;letter-spacing:.1em;color:var(--text-primary);text-decoration:none}
    .navbar-brand span{color:var(--pulse)}
    .nav-links{display:flex;gap:.25rem;list-style:none}
    .nav-links a{color:var(--text-secondary);text-decoration:none;padding:.5rem 1rem;font-size:.875rem;font-weight:500;letter-spacing:.04em;transition:color .2s;border-radius:6px;position:relative}
    .nav-links a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:var(--pulse);transition:width .2s}
    .nav-links a:hover,.nav-links a.active{color:var(--text-primary)}
    .nav-links a:hover::after,.nav-links a.active::after{width:80%}

    
    .view{display:none}
    .view.active{display:block}

    
    .horror-hero{position:relative;min-height:32vh;display:flex;align-items:center;justify-content:center;overflow:hidden;background:var(--abyss)}
    .horror-hero--full{min-height:100vh}
    .hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse at center,#150505 0%,#050505 100%)}
    .hero-bg::after{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:300px;height:300px;border:1px solid rgba(196,30,58,.06);border-radius:50%;box-shadow:0 0 0 60px rgba(196,30,58,.03),0 0 0 120px rgba(196,30,58,.02);animation:breathe 8s ease-in-out infinite}
    @keyframes breathe{0%,100%{opacity:.4}50%{opacity:1}}
    .hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.5) 0%,rgba(0,0,0,.95) 100%)}
    .hero-content{position:relative;z-index:2;text-align:center;padding:3rem 1rem}
    .hero-badge{display:inline-block;background:rgba(196,30,58,.15);border:1px solid rgba(196,30,58,.25);color:var(--ember);font-size:.7rem;font-weight:600;letter-spacing:.12em;padding:.25rem .8rem;border-radius:100px;text-transform:uppercase;margin-bottom:1rem}
    .hero-title{font-family:var(--font-display);font-size:clamp(2.5rem,8vw,6rem);letter-spacing:.1em;text-transform:uppercase;color:var(--text-primary);text-shadow:0 2px 10px rgba(0,0,0,.8),0 0 40px rgba(0,0,0,.5);animation:titlePulse 4s ease-in-out infinite}
    @keyframes titlePulse{0%,100%{text-shadow:0 2px 10px rgba(0,0,0,.8),0 0 40px rgba(0,0,0,.5)}50%{text-shadow:0 2px 10px rgba(0,0,0,.8),0 0 60px rgba(196,30,58,.18)}}
    .hero-sub{color:var(--text-muted);font-size:1.05rem;letter-spacing:.05em;margin-top:.75rem}

    
    .container{max-width:1100px;margin:0 auto;padding:0 1.5rem}
    .py-5{padding-top:3rem;padding-bottom:3rem}
    .pt-5{padding-top:3rem}
    .mb-4{margin-bottom:1rem}
    .mb-5{margin-bottom:2rem}

    
    .category-header{display:flex;align-items:center;gap:1rem;margin-bottom:1.25rem;padding-bottom:.75rem;border-bottom:1px solid rgba(80,80,80,.2)}
    .category-header h3{font-family:var(--font-display);font-size:1.8rem;letter-spacing:.08em;text-transform:uppercase}
    .category-count{background:rgba(40,40,40,.8);border:1px solid rgba(80,80,80,.2);color:var(--text-muted);font-size:.75rem;font-weight:600;padding:.2rem .6rem;border-radius:100px}
    .challenges-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:1rem;margin-bottom:2rem}

    
    .challenge-button{display:block;width:100%;background:linear-gradient(145deg,rgba(25,25,25,.95) 0%,rgba(15,15,15,.95) 100%);border:1px solid rgba(80,80,80,.2);border-radius:12px;color:var(--text-primary);cursor:pointer;position:relative;overflow:hidden;transition:all .3s cubic-bezier(.4,0,.2,1);text-align:center}
    .challenge-button::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,transparent 0%,rgba(196,30,58,.05) 100%);opacity:0;transition:opacity .3s}
    .challenge-button:hover{transform:translateY(-6px) scale(1.02);box-shadow:0 8px 40px rgba(0,0,0,.8),0 0 30px rgba(196,30,58,.1);border-color:var(--crimson-dark)}
    .challenge-button:hover::before{opacity:1}
    .challenge-button.solved{border-color:var(--dried-blood);background:linear-gradient(145deg,rgba(30,20,20,.95) 0%,rgba(20,15,15,.95) 100%)}
    .challenge-inner{padding:1.5rem 1rem}
    .challenge-name{font-weight:600;font-size:.95rem;margin-bottom:.35rem}
    .challenge-pts{font-size:1.4rem;font-weight:700;color:var(--text-accent)}
    .challenge-button.solved .challenge-pts{color:var(--rust)}
    .solved-label{display:inline-block;font-size:.65rem;font-weight:700;color:var(--rust);text-transform:uppercase;letter-spacing:.1em;margin-top:.3rem}
    .diff-label{display:inline-block;font-size:.65rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;padding:.15rem .5rem;border-radius:100px;margin-top:.5rem}
    .tag-easy{background:rgba(74,107,82,.25);color:#6da87a;border:1px solid rgba(74,107,82,.4)}
    .tag-medium{background:rgba(107,96,64,.25);color:#c8a74a;border:1px solid rgba(107,96,64,.4)}
    .tag-hard{background:rgba(107,53,53,.25);color:#d46a6a;border:1px solid rgba(107,53,53,.4)}

    
    .scoreboard-table{width:100%;border-collapse:collapse;background:rgba(15,15,15,.8);border:1px solid rgba(80,80,80,.15);border-radius:12px;overflow:hidden}
    .scoreboard-table th{background:rgba(30,30,30,.9);padding:.75rem 1rem;text-align:left;font-size:.8rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);border-bottom:1px solid rgba(80,80,80,.15)}
    .scoreboard-table th:first-child,.scoreboard-table td:first-child{text-align:center;width:80px}
    .scoreboard-table td{padding:.85rem 1rem;border-bottom:1px solid rgba(40,40,40,.6);font-size:.9rem}
    .scoreboard-table tr:last-child td{border-bottom:none}
    .scoreboard-table tr:hover td{background:rgba(30,30,30,.4)}
    .rank-badge{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;font-weight:700;font-size:.85rem;background:rgba(40,40,40,.8);color:var(--text-muted)}
    .rank-1{background:rgba(196,30,58,.2);color:#c41e3a;border:1px solid rgba(196,30,58,.4)}
    .rank-2{background:rgba(107,96,64,.2);color:#c8a74a}
    .rank-3{background:rgba(80,80,80,.2);color:#aaa}
    .score-value{font-family:monospace;font-weight:700}
    .scoreboard-name{color:var(--text-primary);text-decoration:none}
    .scoreboard-name:hover{color:var(--ember)}
    .top-placement td{background:rgba(196,30,58,.03)}
    .score-chart{background:rgba(15,15,15,.6);border:1px solid rgba(80,80,80,.15);border-radius:12px;height:160px;overflow:hidden;margin-bottom:2rem;display:flex;align-items:flex-end;padding:1rem 1.5rem;gap:2px}
    .score-bar{flex:1;background:linear-gradient(180deg,rgba(196,30,58,.7),rgba(196,30,58,.2));border-radius:4px 4px 0 0;transition:height .3s}

    
    .login-wrap{max-width:440px;margin:0 auto}
    .horror-card{background:rgba(10,10,10,.85);border:1px solid rgba(80,50,50,.3);border-radius:12px;padding:2rem 2.5rem}
    .form-label{display:block;font-weight:600;font-size:.875rem;margin-bottom:.4rem;color:var(--text-secondary)}
    .form-required{color:var(--pulse)}
    .form-control{width:100%;background:rgba(15,15,15,.9);border:1px solid rgba(80,80,80,.3);border-radius:8px;color:var(--text-primary);padding:.75rem 1rem;font-size:.95rem;outline:none;transition:border-color .2s;margin-bottom:1.25rem;font-family:var(--font-body)}
    .form-control:focus{border-color:var(--rust)}
    .form-control::placeholder{color:var(--text-muted)}
    .form-footer{display:flex;justify-content:space-between;align-items:center;margin-top:.5rem}
    .text-muted-link{color:var(--text-muted);font-size:.85rem;text-decoration:none}
    .text-muted-link:hover{color:var(--text-secondary)}
    .btn-primary{background:var(--pulse);border:none;border-radius:8px;color:#fff;padding:.75rem 2rem;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .2s,transform .1s;font-family:var(--font-body)}
    .btn-primary:hover{background:#a0162f;transform:translateY(-1px)}

    
    .modal-overlay{display:none;position:fixed;inset:0;z-index:500;background:rgba(0,0,0,.85);align-items:center;justify-content:center}
    .modal-overlay.open{display:flex}
    .modal-box{background:#111;border:1px solid rgba(80,50,50,.35);border-radius:16px;max-width:520px;width:90%;padding:2rem;position:relative;animation:modalIn .25s ease}
    @keyframes modalIn{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
    .modal-close{position:absolute;top:1rem;right:1rem;background:none;border:none;color:var(--text-muted);font-size:1.4rem;cursor:pointer;line-height:1}
    .modal-close:hover{color:var(--text-primary)}
    .modal-cat{color:var(--text-muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:.5rem}
    .modal-title{font-family:var(--font-display);font-size:2rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:.5rem}
    .modal-desc{color:var(--text-secondary);font-size:.9rem;line-height:1.6;margin-bottom:1.25rem}
    .modal-meta{display:flex;gap:.75rem;margin-bottom:1.25rem;flex-wrap:wrap}
    .modal-meta span{background:rgba(30,30,30,.9);border:1px solid rgba(80,80,80,.2);border-radius:6px;padding:.25rem .75rem;font-size:.8rem;color:var(--text-secondary)}
    .flag-row{display:flex;gap:.5rem}
    .flag-row .form-control{margin-bottom:0;flex:1}
    .btn-submit{background:var(--pulse);border:none;border-radius:8px;color:#fff;padding:.75rem 1.25rem;font-weight:600;cursor:pointer;transition:background .2s;white-space:nowrap;font-family:var(--font-body)}
    .btn-submit:hover{background:#a0162f}

    footer{border-top:1px solid rgba(80,80,80,.15);padding:2rem 1rem;text-align:center;color:var(--text-muted);font-size:.8rem}