:root{--primary: #2563eb;--primary-dark: #1d4ed8;--primary-light: #dbeafe;--bg: #f1f5f9;--border: #e2e8f0;--text: #1e293b;--text-muted: #64748b;--radius: 8px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;font-size:16px;-webkit-font-smoothing:antialiased}input[type=text],input:not([type=checkbox]):not([type=radio]),textarea{padding:10px 12px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:15px;width:100%;font-family:inherit;outline:none;background:#fff;transition:border-color .15s}input[type=text]:focus,input:not([type=checkbox]):not([type=radio]):focus,textarea:focus{border-color:var(--primary)}.btn-primary{padding:10px 18px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius);font-size:15px;cursor:pointer;font-weight:500;white-space:nowrap}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:disabled{opacity:.45;cursor:not-allowed}.btn-secondary{padding:10px 18px;background:#fff;color:var(--text);border:1.5px solid var(--border);border-radius:var(--radius);font-size:15px;cursor:pointer}.btn-secondary:hover{background:var(--bg)}@media(max-width:480px){body{font-size:15px}.actions{flex-direction:column}}