:root{--green: #16A34A;--red: #DC2626;--bg: #F9FAFB;--surface: #FFFFFF;--border: #E5E7EB;--text: #111827;--text-muted: #6B7280;--radius: 12px;--radius-sm: 8px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:16px;-webkit-text-size-adjust:100%}#app{height:100%}button{cursor:pointer;font-family:inherit;font-size:16px;border:none;border-radius:var(--radius-sm);padding:12px 20px;font-weight:600}.btn-primary{background:var(--green);color:#fff;width:100%}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border);width:100%}.btn-danger{background:var(--red);color:#fff}input,select,textarea{font-family:inherit;font-size:16px;border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;background:var(--surface);color:var(--text);width:100%;-moz-appearance:none;appearance:none;-webkit-appearance:none}input:focus,select:focus,textarea:focus{outline:2px solid var(--green);outline-offset:-1px}.screen{display:flex;flex-direction:column;height:100%;max-width:480px;margin:0 auto;background:var(--bg)}.screen-header{display:flex;align-items:center;padding:16px;background:var(--surface);border-bottom:1px solid var(--border);gap:12px}.screen-header h1{font-size:18px;font-weight:700;flex:1}.screen-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.screen-footer{padding:16px;border-top:1px solid var(--border);background:var(--surface);display:flex;gap:8px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.field{display:flex;flex-direction:column;gap:6px}.field label{font-size:13px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}.amount-positive{color:var(--green)}.amount-negative{color:var(--red)}.back-btn{background:none;padding:4px;color:var(--text);font-size:20px;line-height:1}