:root{--navy-dark: #0a0e27;--navy-medium: #1a1f3a;--navy-light: #2d3561;--cyan: #00d4ff;--cyan-dark: #00a8cc;--orange: #ff8c00;--orange-dark: #e67e00;--white: #ffffff;--light-gray: #b8c2cc;--medium-gray: #6c757d;--gradient-cyan: linear-gradient(135deg, #00d4ff 0%, #00a8cc 100%);--gradient-orange: linear-gradient(135deg, #ff8c00 0%, #e67e00 100%);--gradient-dark: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 100%);--gradient-mixed: linear-gradient(135deg, #00d4ff 0%, #ff8c00 100%);--shadow-sm: 0 2px 8px rgba(0, 212, 255, .1);--shadow-md: 0 4px 15px rgba(0, 212, 255, .15);--shadow-lg: 0 10px 30px rgba(0, 0, 0, .3);--shadow-cyan: 0 0 25px rgba(0, 212, 255, .3);--shadow-orange: 0 0 25px rgba(255, 140, 0, .3);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:var(--navy-dark);min-height:100vh;color:var(--light-gray);line-height:1.6}header{background:var(--navy-medium);color:var(--white);padding:20px 40px;box-shadow:0 4px 20px #00d4ff1a;position:sticky;top:0;z-index:100;border-bottom:2px solid rgba(0,212,255,.2)}header h1{font-size:2rem;font-weight:800;background:var(--gradient-mixed);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:10px;letter-spacing:-1px}nav{display:flex;gap:25px;align-items:center}nav a{color:var(--light-gray);text-decoration:none;font-weight:500;transition:all .3s ease;position:relative;padding:5px 0}nav a:hover{color:var(--cyan);transform:translateY(-2px)}nav a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--gradient-cyan);transition:width .3s ease}nav a:hover:after{width:100%}#userDisplay{transition:all .3s ease;padding:5px 10px;border-radius:20px}#userDisplay:hover{background:#00d4ff1a;text-shadow:0 0 10px rgba(0,212,255,.5)}main{padding:40px 20px;max-width:1200px;margin:0 auto;min-height:calc(100vh - 200px)}.form-container{background:var(--navy-medium);padding:40px;max-width:450px;margin:40px auto;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg),0 0 0 1px #00d4ff1a;position:relative;overflow:hidden}.form-container:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient-mixed)}.form-container h2{margin-bottom:25px;color:var(--white);font-size:1.8rem;text-align:center}.form-group{margin-bottom:25px}.form-group label{display:block;margin-bottom:8px;font-weight:600;color:var(--cyan);font-size:.95rem}input,select,textarea{width:100%;padding:12px 16px;border:2px solid var(--navy-light);border-radius:var(--radius-sm);font-size:1rem;transition:all .3s ease;background:var(--navy-dark);color:var(--white)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--cyan);background:var(--navy-dark);box-shadow:0 0 0 3px #00d4ff1a}input::placeholder{color:var(--medium-gray)}button{width:100%;padding:14px;background:var(--gradient-cyan);color:var(--navy-dark);border:none;border-radius:var(--radius-sm);font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s ease;text-transform:uppercase;letter-spacing:.5px}button:hover{transform:translateY(-2px);box-shadow:var(--shadow-cyan);background:var(--gradient-mixed)}button:active{transform:translateY(0)}.form-container p{text-align:center;margin-top:20px;color:var(--light-gray);font-size:.95rem}.form-container a{color:var(--orange);font-weight:600;text-decoration:none;transition:color .3s ease}.form-container a:hover{color:var(--cyan);text-decoration:underline}.message{padding:14px 18px;margin-bottom:20px;border-radius:var(--radius-sm);font-weight:500;animation:slideIn .4s ease-out}.message.success{background-color:#00d4ff1a;color:var(--cyan);border-left:4px solid var(--cyan)}.message.error{background-color:#ff8c001a;color:var(--orange);border-left:4px solid var(--orange)}.error{color:var(--orange);background:#ff8c001a;padding:12px;border-radius:var(--radius-sm);margin:10px 0;border-left:4px solid var(--orange);display:none}.success{color:var(--cyan);background:#00d4ff1a;padding:12px;border-radius:var(--radius-sm);margin:10px 0;border-left:4px solid var(--cyan);display:none}.form-error{color:var(--orange);font-size:.875rem;margin-top:6px;display:none;padding-left:5px}.auth-status{background:#00d4ff33;color:var(--cyan);padding:12px;text-align:center;margin-bottom:20px;border-radius:var(--radius-sm);font-weight:600;border:1px solid rgba(0,212,255,.3)}.jogos-container{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:30px;padding:20px 0}.jogo-card{background:var(--navy-medium);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-md);transition:all .3s ease;position:relative;border:1px solid rgba(0,212,255,.1);display:flex;flex-direction:column}.jogo-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-cyan);border-color:#00d4ff4d}.jogo-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient-mixed);opacity:0;transition:opacity .3s ease}.jogo-card:hover:before{opacity:1}.jogo-card h3{padding:20px 20px 10px;color:var(--white);font-size:1.25rem;font-weight:700}.jogo-card .info{padding:0 20px 10px;color:var(--light-gray);font-size:.9rem}.jogo-card .price{padding:0 20px 20px;font-size:1.5rem;font-weight:800;color:var(--orange)}.cell-estado{padding:4px 10px;border-radius:12px;font-size:.8rem;font-weight:600;display:inline-block;text-transform:capitalize;margin:0 20px 20px;align-self:flex-start}.estado-novo{background:#22c55e;color:#fff}.estado-como-novo{background:#3b82f6;color:#fff}.estado-usado{background:#f59e0b;color:#fff}optgroup{color:var(--cyan);font-weight:700}option{color:var(--white);background:var(--navy-dark)}.platform-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:15px;margin-top:20px}.platform-card{background:var(--navy-medium);padding:20px;text-align:center;border-radius:var(--radius-md);color:var(--cyan);text-decoration:none;font-weight:600;transition:all .3s ease;border:1px solid rgba(0,212,255,.2)}.platform-card:hover{background:var(--cyan);color:var(--navy-dark);transform:translateY(-3px)}.game-image-container{width:100%;height:180px;overflow:hidden;border-radius:var(--radius-sm);margin-bottom:15px;background:var(--navy-dark);display:flex;align-items:center;justify-content:center}.game-image{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.game-image:hover{transform:scale(1.05)}.game-image-placeholder{width:100%;height:180px;background:var(--navy-dark);border-radius:var(--radius-sm);margin-bottom:15px;display:flex;align-items:center;justify-content:center;font-size:4rem}.carrinho-btn{width:100%;padding:10px;background:var(--cyan);color:var(--navy-dark);border:none;border-radius:var(--radius-sm);font-weight:600;cursor:pointer;margin-top:10px;transition:all .3s ease}.carrinho-badge{position:absolute;top:-8px;right:-8px;background:var(--orange);color:#fff;border-radius:50%;width:18px;height:18px;font-size:.75rem;display:inline-flex;align-items:center;justify-content:center;font-weight:700}nav a{position:relative}footer{background:var(--navy-medium);color:var(--light-gray);text-align:center;padding:30px;margin-top:60px;font-size:.9rem;border-top:2px solid rgba(0,212,255,.1)}.container{max-width:1200px;margin:0 auto;padding:0 20px}.text-center{text-align:center}.mt-20{margin-top:20px}.mb-20{margin-bottom:20px}#logout{color:var(--orange);font-weight:600}#logout:hover{color:var(--cyan)}@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes glow{0%,to{box-shadow:0 0 5px #00d4ff80}50%{box-shadow:0 0 20px #00d4ffcc}}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:var(--navy-dark)}::-webkit-scrollbar-thumb{background:var(--cyan-dark);border-radius:5px}::-webkit-scrollbar-thumb:hover{background:var(--cyan)}@media(max-width:768px){header{padding:15px 20px}header h1{font-size:1.5rem}nav{gap:15px;font-size:.9rem}.form-container{margin:20px;padding:30px 20px}.jogos-container{grid-template-columns:1fr;gap:20px}}.user-avatar{width:45px;height:45px;border-radius:50%;background:var(--gradient-mixed);color:var(--navy-dark);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;box-shadow:var(--shadow-cyan)}.mensagem{background:var(--navy-medium);padding:15px;margin-bottom:15px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);animation:fadeIn .3s ease-out;border:1px solid rgba(0,212,255,.1)}.mensagem .data{font-size:.8rem;color:var(--medium-gray);margin-top:8px}.messages-container{max-height:500px;overflow-y:auto;padding:10px;background:var(--navy-dark);border-radius:var(--radius-md);border:1px solid rgba(0,212,255,.1)}.send-button{background:var(--gradient-orange);width:auto;padding:12px 30px;color:var(--navy-dark);font-weight:700}.send-button:hover{background:var(--gradient-mixed);box-shadow:var(--shadow-orange)}.btn-contactar{width:100%;padding:10px;background:var(--orange);color:var(--navy-dark);border:none;border-radius:var(--radius-sm);font-weight:600;cursor:pointer;transition:all .3s ease;display:inline-block;text-align:center}