:root{--primary-color:#3b82f6;--primary-hover:#2563eb;--bg-color:#0f172a;--text-main:#f8fafc;--text-muted:#94a3b8;--card-bg:#1e293bb3;--card-border:#ffffff1a;--success-color:#10b981;--success-bg:#10b9811a;--danger-color:#ef4444;--danger-bg:#ef44441a;--warning-color:#f59e0b;--warning-bg:#f59e0b1a}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);background-image:radial-gradient(at 0 0,#3b82f626 0,#0000 50%),radial-gradient(at 100% 100%,#10b9811a 0,#0000 50%);background-attachment:fixed;justify-content:center;min-height:100vh;font-family:Inter,sans-serif;line-height:1.6;display:flex}#app{flex-direction:column;gap:1.5rem;width:100%;max-width:800px;padding:1rem 2rem 2rem;display:flex}.hero-header{justify-content:space-between;align-items:center;margin-bottom:.5rem;display:flex}.lang-switcher{gap:.5rem;display:flex}.lang-switcher button{color:var(--text-muted);cursor:pointer;background:#ffffff1a;border:1px solid #fff3;border-radius:4px;padding:.25rem .75rem;font-family:inherit;font-size:.8rem;font-weight:600;transition:all .2s}.lang-switcher button:hover{background:#fff3}.lang-switcher button.active{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.hero{text-align:center;margin-bottom:.5rem;animation:.8s ease-out fadeInDown}.logo-container{justify-content:center;align-items:center;gap:.75rem;display:flex}.logo-icon{background:var(--primary-color);color:#fff;border-radius:12px;justify-content:center;align-items:center;padding:.75rem;display:flex;box-shadow:0 4px 14px #3b82f666}.brand-logo{object-fit:contain;width:auto;max-width:100%;height:auto;max-height:140px}.hero p{color:var(--text-muted);font-size:1.1rem}.instructions-card,.checker-section,.result-area{background:var(--card-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--card-border);border-radius:16px;padding:2rem;transition:transform .3s,box-shadow .3s;box-shadow:0 10px 30px #0003}.instructions-card:hover,.checker-section:hover{transform:translateY(-2px);box-shadow:0 12px 40px #0000004d}.instructions-card h2{margin-bottom:1.5rem;font-size:1.25rem;font-weight:600}.help-box{background:#3b82f61a;border:1px solid #3b82f64d;border-radius:12px;margin-top:2rem;padding:1.25rem}.help-box h3{color:#60a5fa;align-items:center;gap:.5rem;margin-bottom:1rem;font-size:1.05rem;display:flex}.help-grid{grid-template-columns:1fr;gap:1rem;display:grid}@media (width>=600px){.help-grid{grid-template-columns:repeat(3,1fr)}}.help-item{color:var(--text-muted);background:#0003;border-radius:8px;padding:.75rem;font-size:.85rem;line-height:1.5}.help-item strong{color:var(--text-main)}.steps{flex-direction:column;gap:1rem;list-style:none;display:flex}.steps li{align-items:flex-start;gap:1rem;display:flex}.step-number{color:#60a5fa;background:#3b82f633;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:.9rem;font-weight:600;display:flex}.checker-section{flex-direction:column;gap:1.5rem;display:flex}textarea{border:1px solid var(--card-border);width:100%;height:200px;color:var(--text-main);resize:vertical;background:#0f172a99;border-radius:12px;padding:1rem;font-family:Inter,sans-serif;font-size:1rem;transition:border-color .3s,box-shadow .3s}textarea:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 3px #3b82f633}textarea::placeholder{color:#64748b}.primary-btn{background:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:10px;justify-content:center;align-items:center;gap:.5rem;padding:1rem 2rem;font-size:1.1rem;font-weight:600;transition:all .3s;display:flex;box-shadow:0 4px 14px #3b82f64d}.primary-btn:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 6px 20px #3b82f666}.primary-btn:disabled{opacity:.7;cursor:not-allowed}.spinner{border:3px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:20px;height:20px;animation:1s ease-in-out infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.result-area{text-align:center;flex-direction:column;align-items:center;gap:1rem;animation:.5s ease-out forwards fadeInUp;display:flex}.result-area.hidden{display:none}.result-icon{border-radius:50%;justify-content:center;align-items:center;width:64px;height:64px;margin-bottom:.5rem;display:flex}.result-icon svg{width:32px;height:32px}.result-area.success{box-shadow:0 10px 30px var(--success-bg);border-color:#10b9814d}.result-area.success .result-icon{background:var(--success-bg);color:var(--success-color)}.result-area.success #resultTitle{color:var(--success-color)}.result-area.danger{box-shadow:0 10px 30px var(--danger-bg);border-color:#ef44444d}.result-area.danger .result-icon{background:var(--danger-bg);color:var(--danger-color)}.result-area.danger #resultTitle{color:var(--danger-color)}.result-area.warning{box-shadow:0 10px 30px var(--warning-bg);border-color:#f59e0b4d}.result-area.warning .result-icon{background:var(--warning-bg);color:var(--warning-color)}.result-area.warning #resultTitle{color:var(--warning-color)}.result-details{text-align:left;width:100%;color:var(--text-muted);background:#0003;border-radius:8px;margin-top:1rem;padding:1rem;font-size:.95rem}.result-details ul{margin-top:.5rem;padding-left:1.5rem}.result-details li{margin-bottom:.25rem}footer{text-align:justify;color:#94a3b8;margin-top:1rem;padding-bottom:1rem;font-size:.85rem;line-height:1.6}.footer-content p{margin-bottom:.75rem}.footer-content p:last-child{margin-bottom:0}.footer-content strong{color:#cbd5e1}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (width<=600px){#app{padding:1rem}.hero h1{font-size:2rem}.instructions-card,.checker-section,.result-area{padding:1.5rem}}