*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f8fafc;--card:#fff;--text:#1e293b;--muted:#64748b;--primary:#4f46e5;--primary-hover:#4338ca;--danger:#ef4444;--done:#22c55e;--partial:#eab308;--not-done:#e2e8f0;--border:#e2e8f0;--radius:12px}html{font-size:16px}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6}.auth-page{justify-content:center;align-items:center;min-height:100dvh;padding:1rem;display:flex}.auth-card{background:var(--card);border-radius:var(--radius);text-align:center;width:100%;max-width:360px;padding:2rem 1.5rem;box-shadow:0 1px 3px #0000000f}.auth-card h1{margin-bottom:.25rem;font-size:1.75rem;font-weight:700}.subtitle{color:var(--muted);margin-bottom:1.5rem;font-size:.95rem}form{flex-direction:column;gap:.75rem;display:flex}input,textarea{border:1px solid var(--border);background:var(--card);width:100%;color:var(--text);border-radius:8px;outline:none;padding:.75rem;font-family:inherit;font-size:1rem;transition:border-color .2s}input:focus,textarea:focus{border-color:var(--primary)}textarea{resize:vertical}.btn-primary{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;padding:.75rem;font-size:1rem;font-weight:600;transition:background .2s}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.error{color:var(--danger);margin-bottom:.5rem;font-size:.875rem}.auth-link{color:var(--muted);margin-top:1rem;font-size:.875rem}.auth-link a{color:var(--primary);font-weight:500;text-decoration:none}.page{max-width:480px;min-height:100dvh;margin:0 auto;padding:1rem 1rem 6rem}.page h2{margin-bottom:.25rem;font-size:1.5rem;font-weight:700}.date-label{color:var(--muted);margin-bottom:1.25rem;font-size:.875rem}.card{background:var(--card);border-radius:var(--radius);margin-bottom:1rem;padding:1.25rem;box-shadow:0 1px 3px #0000000a}.card h3{margin-bottom:.75rem;font-size:1.1rem;font-weight:600}.habit-list{list-style:none}.habit-item{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:.75rem 0;display:flex}.habit-item:last-child{border-bottom:none}.habit-title{flex:1;margin-right:.5rem;font-weight:500}.status-btns{gap:4px;display:flex}.status-btn{border:1px solid var(--border);background:var(--card);cursor:pointer;color:var(--muted);border-radius:6px;padding:.35rem .6rem;font-size:.75rem;transition:all .15s}.status-btn.selected-0{background:var(--not-done);border-color:var(--not-done);color:var(--muted)}.status-btn.selected-1{background:var(--partial);border-color:var(--partial);color:#fff}.status-btn.selected-2{background:var(--done);border-color:var(--done);color:#fff}.note-input{width:100%;margin-bottom:.75rem}.empty-state{text-align:center;color:var(--muted);padding:2rem 0}.empty-state h3{margin-bottom:.25rem}.loading-container{min-height:100dvh;color:var(--muted);flex-direction:column;justify-content:center;align-items:center;gap:1rem;display:flex}.spinner{border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:32px;height:32px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.navbar{background:var(--card);border-top:1px solid var(--border);padding:.5rem 1rem;padding-bottom:calc(.5rem + env(safe-area-inset-bottom,0px));justify-content:space-between;align-items:center;display:flex;position:fixed;bottom:0;left:0;right:0}.nav-links{gap:4px;display:flex}.nav-btn{color:var(--muted);cursor:pointer;background:0 0;border:none;border-radius:8px;padding:.5rem .75rem;font-size:.85rem;font-weight:500;transition:all .15s}.nav-btn.active{background:var(--primary);color:#fff}.signout-btn{color:var(--danger)}