:root{--background:#f0f4f8;--foreground:#0f1f2e;--surface:#fff;--surface-alt:#e8eef5;--primary:#0a6ebd;--primary-hover:#085fa3;--primary-foreground:#fff;--accent:#00b4a6;--accent-hover:#009990;--muted:#6b8299;--border:#c8d8e8;--ring:#0a6ebd40;--danger:#d9534f;--success:#28a745;--radius:.5rem}@media (prefers-color-scheme:dark){:root{--background:#0a1520;--foreground:#dce8f5;--surface:#0f2030;--surface-alt:#162840;--primary:#2a8fd4;--primary-hover:#3da0e6;--primary-foreground:#fff;--accent:#00c8b8;--muted:#7a9ab8;--border:#1e3a55;--ring:#2a8fd440}}*,:before,:after{box-sizing:border-box}body{background-color:var(--background);color:var(--foreground);-webkit-font-smoothing:antialiased;margin:0;font-family:Inter,Segoe UI,system-ui,sans-serif;line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.ehr-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;box-shadow:0 2px 8px #0000000f}.btn-primary{background:var(--primary);color:var(--primary-foreground);border-radius:var(--radius);cursor:pointer;border:none;padding:.6rem 1.4rem;font-size:.95rem;font-weight:600;transition:background .15s}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.ehr-input{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);width:100%;color:var(--foreground);outline:none;padding:.55rem .9rem;font-size:.95rem;transition:border-color .15s,box-shadow .15s}.ehr-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--ring)}