:root{--bg-color: #0f172a;--card-bg: rgba(30, 41, 59, .7);--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent-color: #38bdf8;--accent-hover: #0ea5e9;--border-color: rgba(148, 163, 184, .1);--font-family: "Inter", system-ui, -apple-system, sans-serif}body{margin:0;font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-primary);min-height:100vh;display:flex;justify-content:center;align-items:center;background-image:radial-gradient(at 0% 0%,rgba(56,189,248,.1) 0px,transparent 50%),radial-gradient(at 100% 100%,rgba(139,92,246,.1) 0px,transparent 50%)}*{box-sizing:border-box}h1,h2,h3{margin:0;font-weight:600}input,button{font-family:inherit}main{width:100%;max-width:600px;padding:1rem}.card{background:var(--card-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:16px;padding:2rem;box-shadow:0 25px 50px -12px #00000080}header{text-align:center;margin-bottom:2rem}header h1{font-size:2rem;background:linear-gradient(to right,var(--accent-color),#8b5cf6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:.5rem}header p{color:var(--text-secondary)}.converter{display:flex;flex-direction:column;gap:1.5rem}.input-group{display:flex;flex-direction:column;gap:.5rem}label{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.input-wrapper{position:relative;display:flex;align-items:center}input{width:100%;padding:1rem 3rem 1rem 1rem;background:#0f172a80;border:1px solid var(--border-color);border-radius:8px;color:var(--text-primary);font-size:1.1rem;transition:all .2s}input:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 2px #38bdf833}.copy-btn{position:absolute;right:.5rem;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;padding:.5rem;border-radius:4px;transition:color .2s;display:flex;align-items:center;justify-content:center}.copy-btn:hover{color:var(--text-primary);background:#ffffff0d}.description{color:var(--accent-color);font-size:.9rem;font-weight:500}.hint{font-size:.75rem;color:var(--text-secondary);font-family:monospace}