*{box-sizing:border-box}body{color:#0f172a;background:#f8fafc;margin:0;font-family:system-ui,sans-serif}.app-shell{flex-direction:column;min-height:100vh;display:flex}.app-header{color:#fff;background:#0f172a;align-items:center;gap:32px;padding:12px 24px;display:flex}.app-brand{font-size:16px;font-weight:700}.app-nav{gap:16px;display:flex}.app-nav a{color:#cbd5e1;border-radius:6px;padding:6px 10px;font-size:14px;text-decoration:none}.app-nav a:hover{color:#fff;background:#1e293b}.app-nav a.active{color:#fff;background:#2563eb}.app-main{background:#fff;border:1px solid #e2e8f0;border-radius:8px;flex:1}.language-switcher{gap:4px;margin-left:16px;display:flex}.language-switcher button{cursor:pointer;background:#fff;border:1px solid #ccc;padding:4px 10px}.language-switcher button.active{color:#fff;background:#2563eb}.login-image{object-fit:contain;width:400px;max-width:100%;height:auto}