:root{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6}*{box-sizing:border-box}body{margin:0;background:#f5f7fb}#root{min-height:100vh}.actions{display:flex;align-items:center;gap:8px}.checkbox input{width:18px;height:18px}.filters{display:flex;gap:8px;align-items:center}.filters select{padding:8px 10px;border-radius:8px;border:1px solid #cbd5e1}.weekday-picker{display:flex;flex-direction:column;gap:6px}.weekday-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(70px,1fr));gap:4px}.weekday-option{display:flex;gap:4px;align-items:center;font-size:13px}.habit-actions{display:flex;gap:6px}.habit-badge{min-width:28px;padding:4px 8px;border-radius:10px;background:#0f172a;color:#f8fafc;font-weight:700;text-align:center}.secondary.icon.flash{animation:pulse .2s ease-in-out}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}.app-footer{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid #e2e8f0;padding:10px 16px;box-shadow:0 -6px 12px #0f172a0f}.footer-nav{max-width:960px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.tab-button{border:1px solid #cbd5e1;background:#f8fafc;padding:10px;border-radius:12px;font-weight:600;cursor:pointer}.tab-button.active{background:#0f172a;color:#f8fafc;border-color:#0f172a}.tab-button.add-toggle{border-radius:999px;font-size:18px}