:root{color-scheme:light dark}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}a{color:inherit;text-decoration:none}.container{padding:14px;max-width:980px;margin:0 auto}.card{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:12px}.row{display:flex;gap:10px;flex-wrap:wrap}.btn{padding:10px 12px;border-radius:10px;border:1px solid rgba(0,0,0,.2);background:transparent;cursor:pointer}.btnPrimary{background:#00000014}.btnActive{background:#0000001f}.small{opacity:.8;font-size:12px}.grid{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.day{border:1px solid rgba(0,0,0,.12);border-radius:10px;padding:8px;min-height:64px;cursor:pointer}.dayToday{outline:2px solid rgba(0,0,0,.35)}.dayNum{font-weight:700}.muted{opacity:.55}.nav{display:flex;gap:10px;margin-bottom:12px}.err{background:#ff000014;border:1px solid rgba(255,0,0,.25);padding:10px;border-radius:10px;white-space:pre-wrap}