:root{--font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;--line-height: 1.5;--font-weight: 400;--color-bg: #f9fafb;--color-text: #1f2937;--color-border: #e5e7eb;--color-plan: #dbeafe;--color-plan-border: #3b82f6;--color-do: #dcfce7;--color-do-border: #22c55e;--color-see: #f3e8ff;--color-see-border: #a855f7}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font-family);background-color:var(--color-bg);color:var(--color-text);min-height:100vh}#app{max-width:1280px;margin:0 auto;display:flex;flex-direction:column;height:100vh}.app-container{display:flex;width:100%;height:100%;overflow:hidden}.main-content{flex:1;display:flex;flex-direction:column;overflow-y:auto;padding:1rem 1rem 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768px){.stats-modal-content{max-width:900px}}.login-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background:#f1f5f9;padding:1rem}.login-content{display:flex;flex-direction:column;background:#fff;border-radius:.5rem;box-shadow:0 4px 6px -1px #0000001a;width:100%;max-width:400px;overflow:hidden}.login-slider{width:100%;height:250px;background:#e2e8f0}.login-form{padding:2rem;flex:1}@media (min-width: 768px){.login-form{flex:1;display:flex;flex-direction:column;justify-content:center}}.landing-container{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1000;background:#1e293b;display:flex;flex-direction:column;align-items:center;justify-content:center}.landing-slider-wrapper{width:90%;max-width:1000px;height:60vh;border-radius:1rem;overflow:hidden;box-shadow:0 25px 50px -12px #00000080}.landing-start-btn{position:absolute;bottom:10%;left:50%;transform:translate(-50%);padding:1rem 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var(--color-border);background-color:#f3f4f6}.todo-input{width:100%;padding:.75rem;border:1px solid var(--color-border);border-radius:6px;font-size:.95rem;outline-color:#2563eb}input[type=checkbox]{width:1.2rem;height:1.2rem;cursor:pointer;accent-color:#2563eb;margin:0}.drag-handle{cursor:grab;padding:0 .5rem;color:#9ca3af;font-size:1.25rem;-webkit-user-select:none;user-select:none;touch-action:none;display:flex;align-items:center}.drag-handle:active{cursor:grabbing;color:#4b5563}.side-menu-backdrop{position:fixed;top:0;left:0;width:100%;height:100%;background:#0000004d;z-index:89}.side-menu-container{position:fixed;top:0;left:0;width:280px;height:100%;background:#fff;box-shadow:2px 0 5px #0000001a;z-index:90;transform:translate(-100%);transition:transform .3s ease-in-out;display:flex;flex-direction:column}.side-menu-container.open{transform:translate(0)}.side-menu-header{padding:1rem;border-bottom:1px solid 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