@import"https://fonts.googleapis.com/css2?family=Work+Sans:wght@300;400;500;600&display=swap";*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--color-bg);color:var(--color-text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button{cursor:pointer;border:none;background:none;font-family:inherit}input,textarea,button{font-family:inherit}ul,ol{list-style:none}:root{--color-bg: #f8f9fa;--color-surface: #ffffff;--color-text-primary: #1a1a1a;--color-text-secondary: #666666;--color-primary: #4f46e5;--color-primary-hover: #4338ca;--color-accent: #10b981;--color-danger: #ef4444;--color-border: #e5e7eb;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--font-family: "Work Sans", system-ui, -apple-system, sans-serif;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.5rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1)}@media(prefers-color-scheme:dark){:root{--color-bg: #111827;--color-surface: #1f2937;--color-text-primary: #f9fafb;--color-text-secondary: #d1d5db;--color-border: #374151}}.sidebar{background-color:var(--color-bg);border-right:1px solid var(--color-border);display:flex;flex-direction:column;padding:var(--spacing-lg);height:100vh}.sidebar-header h1{font-size:var(--font-size-xl);font-weight:700;color:var(--color-primary);margin-bottom:var(--spacing-xl);letter-spacing:-.02em}.nav-section{margin-bottom:var(--spacing-xl)}.nav-title{font-size:var(--font-size-sm);text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-secondary);margin-bottom:var(--spacing-sm);font-weight:600}.nav-item{display:block;width:100%;text-align:left;padding:var(--spacing-sm) var(--spacing-md);margin-bottom:var(--spacing-xs);border-radius:var(--radius-sm);color:var(--color-text-primary);font-size:var(--font-size-base);transition:background-color .2s,color .2s}.nav-item:hover{background-color:#00000008}.nav-item.active{background-color:var(--color-primary);color:#fff;font-weight:500}@media(prefers-color-scheme:dark){.nav-item:hover{background-color:#ffffff0d}}.empty-tags{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-style:italic;padding-left:var(--spacing-md)}.task-input-container{margin-bottom:var(--spacing-xl);position:relative}.task-input{width:100%;padding:var(--spacing-md) var(--spacing-lg);font-size:var(--font-size-lg);border:none;background-color:var(--color-surface);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);color:var(--color-text-primary);transition:box-shadow .2s,transform .1s}.task-input:focus{outline:none;box-shadow:0 0 0 2px var(--color-primary),var(--shadow-md)}.task-input::placeholder{color:var(--color-text-secondary);opacity:.6}.input-hint{position:absolute;right:var(--spacing-md);top:50%;transform:translateY(-50%);font-size:var(--font-size-sm);color:var(--color-text-secondary);pointer-events:none;opacity:.5}.task-item{display:flex;align-items:center;padding:var(--spacing-md);background:var(--color-surface);border-radius:var(--radius-md);margin-bottom:var(--spacing-sm);box-shadow:var(--shadow-sm);transition:all .2s ease;animation:slideIn .3s ease-out}.task-item:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}.task-item.completed .task-text{text-decoration:line-through;color:var(--color-text-secondary);opacity:.7}.task-text{flex:1;margin-left:var(--spacing-md);font-size:var(--font-size-base);word-break:break-word}.checkbox-container{display:block;position:relative;width:20px;height:20px;cursor:pointer;-webkit-user-select:none;user-select:none}.checkbox-container input{position:absolute;opacity:0;cursor:pointer;height:0;width:0}.checkmark{position:absolute;top:0;left:0;height:20px;width:20px;background-color:var(--color-bg);border:2px solid var(--color-border);border-radius:50%;transition:all .2s}.checkbox-container:hover input~.checkmark{border-color:var(--color-primary)}.checkbox-container input:checked~.checkmark{background-color:var(--color-primary);border-color:var(--color-primary)}.checkmark:after{content:"";position:absolute;display:none}.checkbox-container input:checked~.checkmark:after{display:block}.checkbox-container .checkmark:after{left:6px;top:3px;width:4px;height:8px;border:solid white;border-width:0 2px 2px 0;-webkit-transform:rotate(45deg);-ms-transform:rotate(45deg);transform:rotate(45deg)}.delete-btn{opacity:0;color:var(--color-text-secondary);padding:var(--spacing-xs);transition:opacity .2s,color .2s}.task-item:hover .delete-btn{opacity:1}.delete-btn:hover{color:var(--color-danger)}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media(max-width:768px){.delete-btn{opacity:1}}.task-list{display:flex;flex-direction:column;padding-bottom:var(--spacing-xl)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-xl);color:var(--color-text-secondary);text-align:center;font-style:italic;opacity:.7;margin-top:var(--spacing-xl)}.task-area{flex:1;height:100vh;overflow-y:auto;padding:var(--spacing-xl) 2rem;background-color:var(--color-bg)}.area-header{margin-bottom:var(--spacing-xl);display:flex;justify-content:space-between;align-items:baseline}.area-header h1{font-size:var(--font-size-xl);font-weight:700;color:var(--color-text-primary)}.date-display{color:var(--color-text-secondary);font-size:var(--font-size-sm);font-weight:500}.area-content{max-width:800px;margin:0 auto}.task-area::-webkit-scrollbar{width:8px}.task-area::-webkit-scrollbar-track{background:transparent}.task-area::-webkit-scrollbar-thumb{background-color:#0000001a;border-radius:4px}.task-area::-webkit-scrollbar-thumb:hover{background-color:#0003}@media(max-width:768px){.task-area{padding:var(--spacing-md)}}.app-container{display:flex;height:100vh;width:100vw;overflow:hidden;background-color:var(--color-bg)}@media(max-width:768px){.app-container{flex-direction:column}.sidebar{height:auto;padding:var(--spacing-md);border-right:none;border-bottom:1px solid var(--color-border)}.sidebar-header{margin-bottom:var(--spacing-md)}.sidebar-nav ul{display:flex;overflow-x:auto;gap:var(--spacing-sm)}.nav-item{white-space:nowrap}.task-area{padding-top:var(--spacing-md)}}