:root{--primary:#3b82f6;--primary-light:#60a5fa;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--bg-color:#f8fafc;--text-color:#374151;--text-light:#6b7280;--radius:8px}
*{margin:0;padding:0;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
body,html{height:100%;min-height:100vh;width:100%;overflow-x:hidden}
body{background-color:var(--bg-color);color:var(--text-color);line-height:1.6;padding:0;display:flex;flex-direction:column;justify-content:center;align-items:center}
.fullscreen-content{width:100%;max-width:600px;padding:0 20px;text-align:center}
header{margin-bottom:40px}
.title{font-size:3rem;font-weight:700;color:var(--primary);margin-bottom:15px;line-height:1.2}
.tagline{font-size:1.2rem;color:var(--text-light);opacity:.8}
form{width:100%;margin-bottom:30px}
.form-group{margin-bottom:25px;width:100%}
.form-control{width:100%;height:60px;padding:0 20px;border:2px solid var(--primary-light);border-radius:var(--radius);font-size:1.1rem;transition:all .3s ease;background:rgba(255,255,255,.9)}
.form-control:focus{border-color:var(--primary);outline:0;box-shadow:0 0 15px rgba(59,130,246,.2)}
.btn{width:100%;height:60px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius);cursor:pointer;font-size:1.1rem;font-weight:600;display:flex;align-items:center;justify-content:center;gap:10px;transition:all .3s ease}
.btn:hover:not(:disabled){background:var(--primary-light);transform:translateY(-2px);box-shadow:0 8px 15px rgba(59,130,246,.2)}
.btn:active:not(:disabled){transform:translateY(0)}
.btn:disabled{background:#cbd5e1;cursor:not-allowed}
.result-container{margin-top:30px;width:100%;animation:fadeIn .5s ease-out}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}
to{opacity:1;transform:translateY(0)}
}
.result-content h3{font-size:1.3rem;margin-bottom:15px;font-weight:600}
.status-text{font-weight:500;margin-left:8px}
.domain-name{font-weight:500;word-break:break-all;padding:4px 8px;background:rgba(243,244,246,.8);border-radius:4px;display:inline-block;margin-bottom:15px;font-size:1.1rem}
.result-content p{font-size:1.1rem;color:var(--text-color);margin-bottom:10px;word-wrap:break-word}
.result-content small{font-size:.95rem;color:var(--text-light)}
.error-message{background:rgba(239,68,68,.1);border:1px solid var(--danger);color:var(--danger);padding:20px;border-radius:var(--radius);margin-bottom:20px}
@media (max-width:768px){.title{font-size:2.5rem}
.btn,.form-control{height:55px;font-size:1rem}
}
@media (max-width:480px){.title{font-size:2rem}
.tagline{font-size:1rem}
.btn,.form-control{height:50px}
header{margin-bottom:30px}
}