body{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#f4f7f6}button{cursor:pointer;font-family:inherit;border:none;outline:none;transition:all .25s ease-in-out;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:linear-gradient(135deg,#3b82f6 0%,#2563eb 100%);color:#fff;padding:10px 20px;border-radius:10px;font-weight:600;box-shadow:0 4px 6px -1px #3b82f633}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 15px -3px #3b82f64d}.btn-info{background:linear-gradient(135deg,#06b6d4 0%,#0891b2 100%);color:#fff;padding:10px 20px;border-radius:10px;font-weight:600;box-shadow:0 4px 6px -1px #06b6d433}.btn-info:hover{transform:translateY(-2px);box-shadow:0 10px 15px -3px #06b6d44d}.btn-secondary{background:#f1f5f9;color:#475569;padding:10px 20px;border-radius:10px;font-weight:600;border:1px solid #e2e8f0}.btn-secondary:hover{background:#e2e8f0;color:#1e293b}.btn-success{background:linear-gradient(135deg,#10b981 0%,#059669 100%);color:#fff;padding:10px 20px;border-radius:10px;font-weight:600;box-shadow:0 4px 6px -1px #10b98133}.btn-success:hover{transform:translateY(-2px);box-shadow:0 10px 15px -3px #10b9814d}.btn-icon-text{background:#f1f5f9;border:none;color:#475569;padding:8px 15px;border-radius:8px;font-weight:500;cursor:pointer;transition:all .3s}.btn-icon-text:hover{background:#e2e8f0}