:root{--brand-blue:#25408f;--brand-light-blue:#00aeef;--brand-red:#c9252c;--brand-grey:#dcddde}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,-apple-system,BlinkMacSystemFont,Roboto,Helvetica Neue,sans-serif;color:#1a1a1a;background:#faf9f8}.centered-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(160deg,#f2f5fb,#faf9f8 55%)}.card{background:#fff;border:1px solid var(--brand-grey);border-radius:8px;padding:24px}.app-shell{display:flex;min-height:100vh}.side-nav{width:220px;flex-shrink:0;background:var(--brand-blue);color:#fff;padding:20px 0;display:flex;flex-direction:column}.side-nav-brand{padding:0 20px 20px;font-size:20px;font-weight:700;border-bottom:1px solid rgba(255,255,255,.15);margin-bottom:12px}.side-nav-link{display:block;padding:10px 20px;color:rgba(255,255,255,.85);text-decoration:none;font-size:14px}.side-nav-link:hover{background:rgba(255,255,255,.08)}.side-nav-link.active{background:rgba(255,255,255,.15);color:#fff;font-weight:600;border-left:3px solid var(--brand-light-blue)}.main-content{flex:1 1;padding:24px 32px;max-width:1400px}button.primary{background:var(--brand-blue);color:#fff;border:none;padding:10px 18px;border-radius:4px;font-size:14px;cursor:pointer}button.primary:hover{background:#1c316c}input,select,textarea{font-family:inherit;font-size:14px;padding:8px 10px;border:1px solid var(--brand-grey);border-radius:4px;width:100%}