:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.keypad{width:100%;height:100%;display:flex;flex-direction:column}.keypad-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(4,1fr);gap:.5rem;flex:1}.key-btn{border:none;background:#ffffff1a;color:#fff;font-size:1.5rem;font-weight:500;border-radius:1rem;cursor:pointer;transition:background .2s;display:flex;align-items:center;justify-content:center;width:100%;height:100%}.key-btn:active{background:#ffffff4d}.key-btn.action{background:transparent;color:#94a3b8;font-size:1.25rem}.btn-block{width:100%;margin-top:.5rem;padding:1rem;font-size:1.25rem;flex-shrink:0}:root{--bg-color: #0f172a;--text-color: #f8fafc;--text-muted: #94a3b8;--primary: #6366f1;--primary-hover: #4f46e5;--surface: #1e293b;--surface-glass: rgba(30, 41, 59, .7);--input-bg: rgba(15, 23, 42, .5);--border: #334155;--success: #10b981;--danger: #ef4444;--warning: #f59e0b;--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--radius: .75rem}body{margin:0;background:radial-gradient(circle at top left,#1e1b4b,var(--bg-color));color:var(--text-color);font-family:Inter,system-ui,-apple-system,sans-serif;min-height:100dvh}*{box-sizing:border-box;touch-action:manipulation}button{cursor:pointer;font-family:inherit;transition:all .2s ease}.glass{background:var(--surface-glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.1);box-shadow:var(--shadow-lg);border-radius:var(--radius)}.btn{border:none;padding:.75rem 1.5rem;border-radius:var(--radius);font-weight:600;font-size:1rem;display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-hover));color:#fff;box-shadow:0 4px 6px -1px #4f46e54d}.btn-primary:active{transform:scale(.98)}.btn-danger{background:var(--danger);color:#fff}.btn-ghost{background:transparent;color:var(--text-muted)}.btn-ghost:hover{background:#ffffff0d;color:var(--text-color)}.input-glass{background:var(--input-bg);border:1px solid var(--border);color:var(--text-color);padding:.75rem;border-radius:var(--radius);font-size:1.1rem;outline:none;width:100%;box-sizing:border-box}.input-glass:focus{border-color:var(--primary);box-shadow:0 0 0 2px #6366f133}.container{max-width:600px;margin:0 auto;padding:1rem;min-height:100vh;display:flex;flex-direction:column}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .3s ease-out forwards}