:root{--bg: #f7f8fa;--surface: #ffffff;--text: #1a1d23;--muted: #6b7280;--border: #e2e5e9;--accent: #4f46e5;--accent-text: #ffffff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.5}.app{min-height:100vh;display:flex;flex-direction:column}.header{display:flex;align-items:center;gap:1rem;padding:.75rem 1.25rem;background:var(--surface);border-bottom:1px solid var(--border)}.brand{font-weight:600;font-size:1.1rem}.spacer{flex:1}.content{flex:1;padding:1.5rem}.center{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.75rem;text-align:center;padding:1.5rem}.muted{color:var(--muted)}.error{color:#d03b3b}.btn,.btn-link{font:inherit;font-weight:500;text-decoration:none;color:var(--accent);background:none;border:0;padding:0;cursor:pointer}.btn{display:inline-block;padding:.6rem 1.2rem;border:none;border-radius:6px;background:var(--accent);color:var(--accent-text);font:inherit;cursor:pointer}.btn:hover,.btn-link:hover{opacity:.85}.logout-form{margin:0;display:flex;align-items:center}