:root{--bg: #f3f4f6;--surface: #ffffff;--text: #1a1d23;--muted: #6b7280;--border: #e0e2e8;--primary: #205081;--primary-dark: #163a5e;--danger: #b91c1c;--warning: #b45309;--success: #15803d;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent}h1,h2,h3{line-height:1.25}a{color:var(--primary)}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;font-size:16px}.card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:24px}.field{margin-bottom:16px}.field label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}.field input,.field select,.field textarea{width:100%;padding:12px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:8px;border:1px solid transparent;font-weight:600;font-size:14px;text-decoration:none}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:transparent;color:var(--text);border-color:var(--border)}.btn-secondary:hover{background:var(--bg)}.btn-block{width:100%}.btn:disabled{opacity:.6;cursor:not-allowed}.error-text{color:var(--danger);font-size:14px;margin-top:8px}.success-text{color:var(--success);font-size:14px}.muted{color:var(--muted);font-size:14px}.full-page-loading{display:flex;align-items:center;justify-content:center;min-height:100vh;color:var(--muted);font-size:15px}.placeholder-page h1{font-size:22px;margin:0 0 8px}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px}.auth-card{width:100%;max-width:360px}.auth-card h1{font-size:20px;margin:0 0 4px}.auth-card>p{margin:0 0 20px}.app-shell{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.topbar-brand{font-weight:700;font-size:16px;color:var(--text)}.topbar-user{display:flex;align-items:center;gap:12px}.topbar-username{font-size:14px;color:var(--muted)}.app-body{flex:1;display:flex;min-height:0}.sidenav{width:220px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);padding:16px 8px;display:flex;flex-direction:column;gap:2px}.sidenav-link{display:block;padding:10px 14px;border-radius:8px;color:var(--text);text-decoration:none;font-size:14px;font-weight:500}.sidenav-link:hover{background:var(--bg)}.sidenav-link.active{background:var(--primary);color:#fff}.app-content{flex:1;min-width:0;padding:24px}@media(max-width:720px){.app-body{flex-direction:column}.sidenav{width:100%;flex-direction:row;overflow-x:auto;border-right:none;border-bottom:1px solid var(--border);padding:8px}.sidenav-link{white-space:nowrap}.app-content{padding:16px}.topbar{padding:10px 14px}.topbar-username{display:none}}