:root{--color-bg: #f7f7f8;--color-surface: #ffffff;--color-border: #e5e7eb;--color-border-strong: #d1d5db;--color-text: #0f172a;--color-text-muted: #6b7280;--color-accent: #4f46e5;--color-accent-hover: #4338ca;--color-accent-soft: #eef2ff;--color-danger: #dc2626;--color-success: #16a34a;--radius: 12px;--radius-sm: 8px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);--tab-bar-height: 64px;--safe-bottom: env(safe-area-inset-bottom, 0px);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;color:var(--color-text);background:var(--color-bg)}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;min-height:100%}body{background:var(--color-bg)}button{font-family:inherit;font-size:1rem;cursor:pointer}input,button{font-family:inherit}a{color:var(--color-accent);text-decoration:none}.app{min-height:100vh;display:flex;flex-direction:column;padding-bottom:calc(var(--tab-bar-height) + var(--safe-bottom))}.app-header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px 8px}.app-header h1{margin:0;font-size:1.25rem;font-weight:600;letter-spacing:-.01em}.app-header .logout-btn{background:none;border:none;color:var(--color-text-muted);font-size:.85rem;padding:6px 8px}.app-main{flex:1;padding:8px 16px 24px;max-width:720px;width:100%;margin:0 auto}.tab-bar{position:fixed;bottom:0;left:0;right:0;height:calc(var(--tab-bar-height) + var(--safe-bottom));padding-bottom:var(--safe-bottom);background:var(--color-surface);border-top:1px solid var(--color-border);display:grid;grid-template-columns:repeat(4,1fr);z-index:10}.tab-bar a{display:flex;flex-direction:column;align-items:center;justify-content:center;text-decoration:none;color:var(--color-text-muted);font-size:.72rem;gap:4px;padding:8px 0}.tab-bar a.active{color:var(--color-accent)}.tab-bar .icon{font-size:1.25rem;line-height:1}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:16px}.list{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}.list-row{display:flex;align-items:center;padding:14px 16px;border-bottom:1px solid var(--color-border);gap:12px}.list-row:last-child{border-bottom:none}.list-row .label{flex:1;font-size:1rem}.list-row .label.archived{color:var(--color-text-muted);text-decoration:line-through}.checkbox{width:28px;height:28px;border-radius:8px;border:1.5px solid var(--color-border-strong);background:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:background .12s ease,border-color .12s ease;padding:0}.checkbox.checked{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.checkbox svg{width:16px;height:16px}.btn{background:var(--color-accent);color:#fff;border:none;border-radius:var(--radius-sm);padding:10px 16px;font-weight:500;transition:background .12s ease}.btn:hover{background:var(--color-accent-hover)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border-strong)}.btn-secondary:hover{background:#f3f4f6}.btn-ghost{background:none;border:none;color:var(--color-text-muted);padding:8px}.btn-danger{background:none;border:none;color:var(--color-danger);padding:8px}.input{width:100%;padding:10px 12px;border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);font-size:1rem;background:#fff;outline:none;transition:border-color .12s ease,box-shadow .12s ease}.input:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-soft)}.form-row{display:flex;gap:8px}.form-row .input{flex:1}.date-nav{display:flex;align-items:center;justify-content:center;gap:12px;margin:8px 0 16px}.date-nav .date-label{font-size:1rem;font-weight:500;min-width:180px;text-align:center;background:none;border:none;padding:8px 12px;border-radius:var(--radius-sm)}.date-nav .date-label:hover{background:var(--color-surface)}.date-nav .nav-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--color-border);background:var(--color-surface);display:inline-flex;align-items:center;justify-content:center}.week-grid{display:grid;grid-template-columns:minmax(110px,1.6fr) repeat(7,1fr);background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;font-size:.9rem;padding:8px;row-gap:2px;column-gap:2px}.week-grid .head{font-weight:500;text-align:center;padding:8px 4px 10px;font-size:.7rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.04em}.week-grid .head .head-date{font-weight:500;font-size:.85rem;color:var(--color-text);margin-top:2px;text-transform:none;letter-spacing:0}.week-grid .head.today{color:var(--color-accent)}.week-grid .head.today .head-date{color:var(--color-accent);font-weight:600}.week-grid .row-label{padding:0 8px;display:flex;align-items:center;color:var(--color-text);font-weight:500;min-height:44px}.week-grid .cell{display:flex;align-items:center;justify-content:center;cursor:pointer;background:#f3f4f6;border:none;border-radius:8px;height:40px;color:transparent;transition:background .12s ease,transform .08s ease;padding:0}.week-grid .cell:hover{background:#e5e7eb}.week-grid .cell:active{transform:scale(.94)}.week-grid .cell.done{background:var(--color-accent);color:#fff}.week-grid .cell.done:hover{background:var(--color-accent-hover)}.week-grid .cell.today{box-shadow:inset 0 0 0 1.5px var(--color-accent-soft)}.week-grid .cell.today.done{box-shadow:none}.stats-controls{display:flex;gap:8px;margin-bottom:16px}.range-btn{padding:8px 14px;border-radius:999px;border:1px solid var(--color-border-strong);background:var(--color-surface);color:var(--color-text);font-size:.9rem}.range-btn.active{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.auth-card{max-width:400px;width:100%;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:28px;display:flex;flex-direction:column;gap:16px}.auth-card h1{margin:0;font-size:1.4rem;font-weight:600}.auth-card p{margin:0;color:var(--color-text-muted);font-size:.95rem;line-height:1.5}.error{color:var(--color-danger);font-size:.9rem}.muted{color:var(--color-text-muted);font-size:.9rem}.empty-state{padding:32px 16px;text-align:center;color:var(--color-text-muted)}.divider{display:flex;align-items:center;gap:12px;color:var(--color-text-muted);font-size:.8rem}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--color-border)}