:root{--bg:#1c1c1e;--bg-elevated:#242426;--border:#2a2a2e;--text:#ebebf5;--muted:#8e8e93;--blue:#0a84ff;--green:#30d158;--amber:#ff9f0a}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}a{color:var(--blue)}.card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:10px;padding:1.25rem}.muted{color:var(--muted)}.button{background:var(--blue);color:#fff;cursor:pointer;border:none;border-radius:8px;align-items:center;gap:.5rem;padding:.6rem 1rem;font-size:.95rem;display:inline-flex}.button:hover{opacity:.9}.layout{min-height:100vh;display:flex}.sidebar{background:var(--bg-elevated);border-right:1px solid var(--border);flex-shrink:0;width:220px;padding:1.25rem 1rem}.sidebar a{color:var(--text);border-radius:6px;margin-bottom:.2rem;padding:.5rem .6rem;font-size:.95rem;text-decoration:none;display:block}.sidebar a:hover{background:#ffffff0f}.main{flex:1;max-width:960px;padding:2rem}.centered{justify-content:center;align-items:center;min-height:100vh;display:flex}