:root{--flisol-yellow: #FFD700;--flisol-orange: #FF8C00;--flisol-blue: #003399;--flisol-blue-dark: #001a4d;--flisol-green: #00AA55;--flisol-green-dark: #006633;--dark: #0a0f1a;--dark-light: #121a2e;--light: #f0f0f0;--white: #ffffff;--danger: #dc3545;--success: #28a745}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Outfit,sans-serif;background:radial-gradient(ellipse at 20% 20%,rgba(255,140,0,.15) 0%,transparent 45%),radial-gradient(ellipse at 80% 80%,rgba(0,170,85,.12) 0%,transparent 45%),linear-gradient(135deg,var(--dark) 0%,#0d1529 100%);color:var(--light);min-height:100vh;line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:20px}header{text-align:center;padding:40px 0}header h1{font-size:3.5rem;font-weight:900;background:linear-gradient(135deg,var(--flisol-yellow),var(--flisol-orange),var(--flisol-green));-webkit-background-clip:text;-webkit-text-fill-color:transparent;filter:drop-shadow(0 4px 20px 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.3s}.challenge-card:hover{background:#ffd70014;border-color:var(--flisol-yellow)}.challenge-card h4{font-size:1.2rem;color:var(--white);margin:10px 0 5px}.challenge-card p{font-size:.85rem;color:#89a}.id-tag{background:var(--flisol-blue);color:#fff;padding:2px 8px;border-radius:6px;font-size:.7rem;font-weight:800}.diff-tag{font-size:.7rem;text-transform:uppercase;font-weight:700;margin-left:10px}.form-group{margin-bottom:15px}.form-group label{display:block;font-size:.8rem;color:#89a;margin-bottom:5px}.form-group input,.form-group select{width:100%;padding:12px 15px;border-radius:10px;background:#0000004d;border:1px solid rgba(255,255,255,.1);color:#fff;transition:.3s}.form-group input:focus{border-color:var(--flisol-yellow);outline:none;background:#00000080}.btn{background:linear-gradient(135deg,var(--flisol-orange),#ff6b00);color:#fff;border:none;padding:15px;border-radius:12px;font-weight:800;text-transform:uppercase;cursor:pointer;transition:.3s;box-shadow:0 4px 15px #ff8c004d;width:100%}.btn:hover{transform:scale(1.02);box-shadow:0 6px 20px #ff8c0066}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000e6;backdrop-filter:blur(10px);display:none;justify-content:center;align-items:center;z-index:9999}.modal-card{background:var(--dark-light);border:1px solid rgba(255,215,0,.3);border-radius:24px;max-width:800px;width:95%;max-height:90vh;overflow-y:auto;padding:40px;position:relative}.modal-close{position:absolute;top:20px;right:20px;background:none;border:none;color:#fff;font-size:2rem;cursor:pointer}.modal-header h2{color:var(--flisol-yellow);border-bottom:2px solid rgba(255,215,0,.2);padding-bottom:15px;margin-bottom:25px}.detail-meta{display:flex;gap:20px;margin-bottom:20px;font-size:.9rem;flex-wrap:wrap}.diff-badge{padding:2px 10px;border-radius:20px;font-weight:800;font-size:.75rem;text-transform:uppercase}.diff-badge.fácil{background:var(--flisol-green)}.diff-badge.intermedio{background:var(--flisol-orange)}.diff-badge.difícil{background:var(--danger)}.detail-desc h4,.detail-hints h4,.detail-files h4{color:var(--white);margin:25px 0 10px;font-size:1.1rem}.detail-hints ul{padding-left:20px}.detail-hints li{color:#abc;margin-bottom:5px}.file-grid{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}.file-btn{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fff;padding:10px 20px;border-radius:10px;cursor:pointer;display:flex;align-items:center;gap:10px}.file-btn:hover{background:var(--flisol-blue)}.back-btn{background:none;border:1px solid #445566;color:#89a;padding:5px 15px;border-radius:8px;cursor:pointer;margin-bottom:20px}.back-btn:hover{color:#fff;border-color:#fff}.sponsors-section{margin-top:60px;text-align:center}.sponsor-grid{display:flex;justify-content:center;gap:40px;flex-wrap:wrap;align-items:center;margin-top:20px}.sponsor-logo img{max-height:80px;filter:grayscale(100%) brightness(1.5);transition:.3s}.sponsor-logo img:hover{filter:none}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:20px}.auth-tab{padding:12px;border-radius:12px;border:1px solid rgba(255,255,255,.2);background:none;color:#fff;cursor:pointer;font-weight:700}.auth-tab.active{border-color:var(--flisol-yellow);background:#ffd7001a}.points:after{content:" pts";font-size:.7rem;color:#789}.hero-slide[data-astro-cid-j7pv25f6].active{opacity:1!important}.slider-dot[data-astro-cid-j7pv25f6].active{background:var(--flisol-yellow)!important;transform:scale(1.2)}