.navbar{height:64px;padding:0 32px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);background:var(--card)}.logo{font-size:20px;font-weight:700}.theme-btn{border:1px solid var(--border);background:transparent;color:var(--text);padding:8px 14px;border-radius:8px;cursor:pointer}.hero{max-width:600px;margin:80px auto;text-align:center}.hero h1{font-size:36px;margin-bottom:10px}.hero p{color:var(--subtext);margin-bottom:32px}.form{display:flex;gap:10px}.form input{flex:1;padding:14px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--text)}.form button{padding:14px 22px;border-radius:10px;border:none;background:var(--primary);color:#fff;cursor:pointer}.result{margin-top:24px;padding:16px;background:var(--card);border-radius:12px;border:1px solid var(--border)}.result button{margin-left:12px;padding:6px 10px;border-radius:6px;border:none;background:var(--primary);color:#fff;cursor:pointer}.footer{height:60px;display:flex;align-items:center;justify-content:center;color:var(--subtext);border-top:2px solid var(--border);background:var(--card)}:root{--bg: #f4f6fb;--card: #ffffff;--text: #1f2937;--subtext: #6b7280;--primary: #6366f1;--border: #e5e7eb}[data-theme=dark]{--bg: #0f172a;--card: #020617;--text: #e5e7eb;--subtext: #94a3b8;--primary: #818cf8;--border: #1e293b}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:Inter,system-ui,sans-serif;background:var(--bg);color:var(--text);transition:background .3s,color .3s}