body{background:#f0e6ff;font-family:Nunito,sans-serif;color:#3d2f64;margin:0}.container{max-width:980px;margin:auto;padding:16px}.nav{display:flex;gap:8px;flex-wrap:wrap}.pill{border:2px solid #6c3ce0;border-radius:999px;padding:8px 12px;background:#fff;color:#6c3ce0;text-decoration:none;font-weight:800}.card{background:#fff;border-radius:18px;padding:16px;box-shadow:0 8px 24px rgba(108,60,224,.14)}h1,h2{font-family:'Fredoka One',cursive;color:#6c3ce0}.challenge{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center}.start-btn,.share-btn,.done-btn{border:none;border-radius:12px;padding:10px 14px;font-weight:800;cursor:pointer}.start-btn{background:#6c3ce0;color:#fff;text-decoration:none;display:inline-block}.done-btn{background:#16a34a;color:#fff}.share-btn{background:#0ea5e9;color:#fff}.streak{display:flex;align-items:center;gap:8px;font-size:1.05rem;font-weight:800}.flame{display:inline-block;animation:flame .9s ease-in-out infinite}.calendar{margin-top:12px;display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.day{background:#f4edff;border-radius:10px;padding:8px;text-align:center;font-size:.85rem}.day.done{background:#dcfce7;color:#166534}.row{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}@keyframes flame{0%,100%{transform:translateY(0)}50%{transform:translateY(-2px)}}@media(max-width:640px){.challenge{grid-template-columns:1fr}.start-btn{width:100%;text-align:center}}