@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--bg-card: rgba(30, 41, 59, .6);--bg-card-hover: rgba(51, 65, 85, .8);--accent-primary: #3b82f6;--accent-secondary: #8b5cf6;--accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--priority-urgent: #ef4444;--priority-high: #f59e0b;--priority-normal: #3b82f6;--priority-low: #64748b;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .5);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .6);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 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var(--sidebar-width))}.sidebar-column.active{transform:translate(0);margin-left:0}.sidebar-column::-webkit-scrollbar{width:6px}.sidebar-column::-webkit-scrollbar-track{background:transparent}.sidebar-column::-webkit-scrollbar-thumb{background:#fff3;border-radius:3px}.sidebar-column::-webkit-scrollbar-thumb:hover{background:#ffffff4d}.sidebar-header{padding:24px;border-bottom:1px solid rgba(255,255,255,.1);background:#3b82f61a;display:flex;justify-content:space-between;align-items:center}.sidebar-header h2{font-size:1.5em;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-close-btn{background:#ffffff1a;border:none;color:var(--text-primary);font-size:24px;cursor:pointer;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.sidebar-close-btn:hover{background:#fff3;transform:rotate(90deg)}body.sidebar-open .sidebar-toggle-btn{opacity:0;pointer-events:none}.sidebar-nav{padding:16px 0}.sidebar-section{margin-bottom:8px}.sidebar-section-header{padding:16px 24px;font-size:.95em;font-weight:600;letter-spacing:.5px;text-transform:uppercase;color:var(--text-primary)}.sidebar-section-toggle{width:100%;background:transparent;border:none;color:var(--text-primary);padding:16px 24px;text-align:left;cursor:pointer;font-size:.95em;font-weight:600;letter-spacing:.5px;text-transform:uppercase;display:flex;align-items:center;gap:12px;transition:all var(--transition-fast)}.sidebar-section-toggle:hover{background:#ffffff0d}.toggle-icon{font-size:.7em;transition:transform var(--transition-base);display:inline-block;color:var(--accent-primary)}.sidebar-section-toggle.collapsed 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a:before{background:var(--accent-primary);transform:translateY(-50%) scale(1.3)}.main-column{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-primary);min-width:0}.main-header{padding:16px 24px;border-bottom:1px solid rgba(255,255,255,.1);background:#1e293b99;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;align-items:center;gap:16px;position:relative}.sidebar-toggle-btn{background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);cursor:pointer;padding:10px;display:flex;flex-direction:column;gap:4px;border-radius:var(--radius-sm);transition:all var(--transition-fast);flex-shrink:0}.sidebar-toggle-btn:hover{background:#ffffff26;transform:scale(1.05)}.sidebar-toggle-btn span{display:block;width:20px;height:2px;background:var(--text-primary);border-radius:2px;transition:all var(--transition-base)}.sidebar-toggle-btn.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.sidebar-toggle-btn.active span:nth-child(2){opacity:0}.sidebar-toggle-btn.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.main-header h1{flex:1;font-size:1.5em;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.5px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.header-add-btn{background:var(--accent-gradient);color:#fff;border:none;border-radius:50%;width:44px;height:44px;font-size:24px;font-weight:300;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-md);transition:all var(--transition-base);flex-shrink:0}.header-add-btn:hover{transform:scale(1.1) rotate(90deg);box-shadow:var(--shadow-lg)}.header-add-btn:active{transform:scale(.95) rotate(90deg)}#task-lists{flex:1;overflow-y:auto;padding:24px}#task-lists::-webkit-scrollbar{width:8px}#task-lists::-webkit-scrollbar-track{background:transparent}#task-lists::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:4px}#task-lists::-webkit-scrollbar-thumb:hover{background:var(--accent-primary)}.panel-column{width:var(--panel-width);background:#0f172af2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-left:1px solid rgba(255,255,255,.1);display:flex;flex-direction:column;flex-shrink:0;transition:transform var(--transition-slow),margin-right var(--transition-slow)}.panel-column.collapsed{transform:translate(var(--panel-width));margin-right:calc(-1 * var(--panel-width))}.panel-header{padding:20px 24px;border-bottom:1px solid rgba(255,255,255,.1);background:#3b82f61a;display:flex;align-items:center;justify-content:space-between}.panel-header h2{font-size:1.3em;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.panel-close-btn{background:#ffffff1a;border:none;color:var(--text-primary);font-size:24px;cursor:pointer;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.panel-close-btn:hover{background:#fff3;transform:rotate(90deg)}.panel-content{flex:1;overflow-y:auto;padding:24px}.panel-content::-webkit-scrollbar{width:6px}.panel-content::-webkit-scrollbar-track{background:transparent}.panel-content::-webkit-scrollbar-thumb{background:#fff3;border-radius:3px}.panel-content::-webkit-scrollbar-thumb:hover{background:#ffffff4d}.panel-empty{text-align:center;color:var(--text-muted);padding:60px 20px;font-size:1em;font-style:italic;line-height:1.8}.panel-detail{animation:fadeIn .3s 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label{display:block;font-size:.85em;font-weight:600;color:var(--text-secondary);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}.form-group input,.form-group select{margin-bottom:0}.form-actions{display:flex;gap:12px;margin-top:24px}.form-submit-btn,.form-cancel-btn{flex:1;padding:12px 20px;border:none;border-radius:var(--radius-md);cursor:pointer;font-size:1em;font-weight:600;transition:all var(--transition-base)}.form-submit-btn{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-md)}.form-submit-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.form-submit-btn:active{transform:translateY(0)}.form-cancel-btn{background:#ffffff1a;color:var(--text-primary);border:1px solid rgba(255,255,255,.1)}.form-cancel-btn:hover{background:#ffffff26}#task-modal{border:none;padding:0;border-radius:var(--radius-xl);background:var(--bg-secondary);box-shadow:var(--shadow-xl);max-width:700px;width:90%;max-height:90vh;overflow-y:auto;border:1px solid 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var(--transition-fast);-webkit-user-select:none;user-select:none}.history-toggle:hover{color:var(--accent-secondary);transform:translate(4px)}.task-item{display:flex;flex-direction:column;background:var(--bg-card);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:20px;border-radius:var(--radius-lg);margin-bottom:16px;box-shadow:var(--shadow-sm);transition:all var(--transition-base);border:1px solid rgba(255,255,255,.05);border-left:4px solid;position:relative;overflow:hidden;cursor:pointer}.task-item:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,#3b82f60d,#8b5cf60d);opacity:0;transition:opacity 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button{background:#ffffff1a;color:var(--text-primary);border:1px solid rgba(255,255,255,.1);padding:10px;border-radius:var(--radius-sm);cursor:pointer;font-size:18px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.task-item button:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.task-item button.delete{background:#ef444433;border-color:#ef44444d}.task-item button.delete:hover{background:#ef44444d;box-shadow:0 4px 12px #ef44444d}.priority-至急{border-left-color:var(--priority-urgent)}.priority-なるはや{border-left-color:var(--priority-high)}.priority-期限まで{border-left-color:var(--priority-normal)}.priority-期限なし{border-left-color:var(--priority-low)}.child-list{list-style:none;padding-left:32px;margin-top:12px;border-left:2px solid rgba(255,255,255,.1)}.child-task{background:#ffffff08;border-left-color:var(--text-muted)!important;margin-bottom:12px;padding:16px}.parent-task{margin-bottom:20px}.hidden{display:none}.placeholder{text-align:center;color:var(--text-muted);padding:48px 20px;font-size:1.1em;font-style:italic}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.task-item{animation:fadeIn .3s ease-out}#task-modal{display:none!important;pointer-events:none!important}@media(max-width:1023px){.panel-column{position:fixed;right:0;top:0;height:100vh;z-index:1000;transform:translate(100%)}.panel-column.active{transform:translate(0)}.panel-column.collapsed{transform:translate(100%)}}@media(max-width:767px){.sidebar-column{position:fixed;left:0;top:0;height:100vh;z-index:1100;transform:translate(-100%);margin-left:0}.sidebar-column.active{transform:translate(0);margin-left:0}.panel-column{position:fixed;right:0;top:0;width:100%!important;height:100vh;z-index:1000;transform:translate(100%);margin-right:0}.panel-column.active{transform:translate(0)}.panel-column.collapsed{transform:translate(100%)}.main-header{padding:12px 16px}.main-header h1{font-size:1.2em}.header-add-btn{width:40px;height:40px;font-size:20px}#task-lists,.task-item{padding:16px}.task-buttons{flex-wrap:wrap}.datetime-group,.priority-group,.recurrence-group,.parent-group{flex-direction:column;align-items:flex-start}.datetime-group label,.priority-group label,.recurrence-group label,.parent-group label{min-width:auto}}@media(max-width:480px){.sidebar-header h2{font-size:1.3em}.task-title{font-size:1em}.task-meta{font-size:.8em}h2{font-size:1.2em}}