:root{--color-bg-primary: #fef7f9;--color-bg-secondary: #fff5f7;--color-bg-tertiary: #ffe8ee;--color-bg-card: rgba(255, 255, 255, .9);--color-bg-glass: rgba(255, 182, 193, .1);--color-text-primary: #2d2d3a;--color-text-secondary: #5a5a6e;--color-text-muted: #8e8e9e;--color-accent-primary: #f472b6;--color-accent-secondary: #ec4899;--color-accent-gradient: linear-gradient(135deg, #f9a8d4 0%, #f472b6 50%, #7dd3fc 100%);--color-japanese: #f472b6;--color-math: #38bdf8;--color-english: #4ade80;--mastery-0: #fce7f3;--mastery-1: #fbcfe8;--mastery-2: #f9a8d4;--mastery-3: #f472b6;--mastery-4: #7dd3fc;--mastery-5: #38bdf8;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 2px 8px rgba(244, 114, 182, .15);--shadow-md: 0 4px 16px rgba(244, 114, 182, .2);--shadow-lg: 0 8px 32px rgba(244, 114, 182, .25);--shadow-glow: 0 0 20px rgba(244, 114, 182, .4);--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease;--font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-family);background:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse at 20% 0%,rgba(251,207,232,.5) 0%,transparent 50%),radial-gradient(ellipse at 80% 20%,rgba(125,211,252,.3) 0%,transparent 40%),radial-gradient(ellipse at 60% 100%,rgba(249,168,212,.4) 0%,transparent 50%);pointer-events:none;z-index:-1}#root{min-height:100vh;display:flex;flex-direction:column}a{color:var(--color-accent-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-secondary)}button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;outline:none}button:focus-visible,a:focus-visible,summary:focus-visible,[role=button]:focus-visible{outline:3px solid rgba(236,72,153,.65);outline-offset:3px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-bg-tertiary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-accent-primary)}.app-layout{display:flex;min-height:100vh}.sidebar{width:280px;background:var(--color-bg-secondary);border-right:1px solid rgba(244,114,182,.15);padding:var(--space-lg);display:flex;flex-direction:column;position:fixed;left:0;top:0;bottom:0;z-index:100}.main-content{flex:1;margin-left:280px;min-height:100vh;container-type:inline-size;container-name:main}.header{background:#fff5f7f2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(244,114,182,.15);padding:var(--space-md) var(--space-xl);position:sticky;top:0;z-index:50}.page-content{padding:var(--space-xl)}.logo{display:flex;align-items:center;gap:var(--space-md);padding-bottom:var(--space-lg);border-bottom:1px solid rgba(244,114,182,.2);margin-bottom:var(--space-lg)}.logo-icon{width:40px;height:40px;background:var(--color-accent-gradient);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.25rem}.logo-text{font-size:1.25rem;font-weight:700;background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-menu{display:flex;flex-direction:column;gap:var(--space-xs)}.nav-item{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);border-radius:var(--radius-md);color:var(--color-text-secondary);transition:all var(--transition-fast);background:transparent;text-align:left;width:100%}.nav-item:hover{background:var(--color-bg-glass);color:var(--color-text-primary)}.nav-item.active{background:var(--color-accent-gradient);color:#fff;box-shadow:var(--shadow-glow)}.nav-icon{font-size:1.25rem;width:24px;text-align:center}.sync-status{display:inline-flex;align-items:center;font-size:.875rem}.sync-loading{animation:spin 1s linear infinite}.sync-offline{color:#ef4444}.sync-ok{opacity:.6}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.subject-tabs{display:flex;gap:var(--space-sm)}.subject-tab{padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-md);font-weight:500;transition:all var(--transition-fast);background:var(--color-bg-glass);color:var(--color-text-secondary)}.subject-tab:hover{background:var(--color-bg-tertiary);color:var(--color-text-primary)}.subject-tab.active{color:#fff}.subject-tab.active[data-subject=subj_ja]{background:var(--color-japanese)}.subject-tab.active[data-subject=subj_math]{background:var(--color-math)}.subject-tab.active[data-subject=subj_en]{background:var(--color-english)}.card{background:var(--color-bg-card);border:1px solid rgba(244,114,182,.15);border-radius:var(--radius-lg);padding:var(--space-lg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:all var(--transition-base)}.card:hover{border-color:#f472b666;box-shadow:var(--shadow-md)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-md)}.card-title{font-size:1rem;font-weight:600}.unit-card{background:var(--color-bg-card);border:1px solid rgba(244,114,182,.15);border-radius:var(--radius-lg);padding:var(--space-lg);cursor:pointer;transition:all var(--transition-base)}.unit-card:hover{border-color:#f472b666;transform:translateY(-2px);box-shadow:var(--shadow-md)}.unit-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-md);margin-bottom:var(--space-md)}.unit-name{font-weight:600;line-height:1.4}.unit-tags{display:flex;flex-wrap:wrap;gap:var(--space-xs);margin-top:var(--space-sm)}.tag{font-size:.75rem;padding:2px 8px;border-radius:100px;background:var(--color-bg-tertiary);color:var(--color-text-secondary)}.tag.important{background:#f472b633;color:var(--color-japanese)}.tag.high-freq{background:#fbbf2433;color:#fbbf24}.mastery-badge{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;font-weight:700;font-size:.875rem;flex-shrink:0}.mastery-badge[data-level="0"]{background:var(--mastery-0);color:var(--color-text-muted)}.mastery-badge[data-level="1"]{background:var(--mastery-1)}.mastery-badge[data-level="2"]{background:var(--mastery-2)}.mastery-badge[data-level="3"]{background:var(--mastery-3)}.mastery-badge[data-level="4"]{background:var(--mastery-4)}.mastery-badge[data-level="5"]{background:var(--mastery-5)}.mastery-slider-container{display:flex;flex-direction:column;gap:var(--space-sm)}.mastery-slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:8px;border-radius:4px;background:linear-gradient(to right,var(--mastery-0),var(--mastery-5));outline:none}.mastery-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:24px;height:24px;border-radius:50%;background:#fff;cursor:pointer;box-shadow:var(--shadow-md);transition:transform var(--transition-fast)}.mastery-slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.mastery-labels{display:flex;justify-content:space-between;font-size:.75rem;color:var(--color-text-muted)}.form-group{display:flex;flex-direction:column;gap:var(--space-sm)}.form-label{font-weight:500;color:var(--color-text-secondary);font-size:.875rem}.form-input,.form-textarea{background:var(--color-bg-tertiary);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md);padding:var(--space-md);color:var(--color-text-primary);font-family:inherit;font-size:1rem;transition:border-color var(--transition-fast)}.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--color-accent-primary)}.form-textarea{min-height:120px;resize:vertical}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-lg);border-radius:var(--radius-md);font-weight:500;transition:all var(--transition-fast)}.btn-primary{background:var(--color-accent-gradient);color:#fff}.btn-primary:hover{box-shadow:var(--shadow-glow);transform:translateY(-1px)}.btn-secondary{background:var(--color-bg-tertiary);color:var(--color-text-primary)}.btn-secondary:hover{background:var(--color-bg-card)}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover{background:var(--color-bg-glass);color:var(--color-text-primary)}.grid{display:grid;gap:var(--space-lg)}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-auto{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.field-section{margin-bottom:var(--space-xl)}.field-title{font-size:1rem;font-weight:600;color:var(--color-text-secondary);margin-bottom:var(--space-md);padding-bottom:var(--space-sm);border-bottom:1px solid rgba(244,114,182,.2)}.calendar{background:var(--color-bg-card);border-radius:var(--radius-lg);padding:var(--space-lg);border:1px solid rgba(244,114,182,.15)}.calendar-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-lg)}.calendar-title{font-size:1.25rem;font-weight:700}.calendar-nav{display:flex;gap:var(--space-sm)}.calendar-nav button{width:36px;height:36px;border-radius:var(--radius-md);background:var(--color-bg-tertiary);color:var(--color-text-primary);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.calendar-nav button:hover{background:var(--color-accent-primary)}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:2px}.calendar-day-header{text-align:center;font-size:.75rem;font-weight:600;color:var(--color-text-muted);padding:var(--space-sm)}.calendar-day{aspect-ratio:1;border-radius:var(--radius-sm);display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:.875rem;cursor:pointer;transition:all var(--transition-fast);background:var(--color-bg-tertiary);position:relative}.calendar-day:hover{background:var(--color-bg-glass);border-color:var(--color-accent-primary)}.calendar-day.today{border:2px solid var(--color-accent-primary)}.calendar-day.other-month{opacity:.3}.calendar-day.has-logs:after{content:"";position:absolute;bottom:4px;width:6px;height:6px;border-radius:50%;background:var(--color-accent-primary)}.calendar-day.selected{border:2px solid var(--color-accent-secondary);background:#38bdf81a}.calendar-todo-marker{position:absolute;top:2px;right:2px;width:16px;height:16px;border-radius:50%;background:var(--color-accent-secondary);color:#fff;font-size:.6rem;font-weight:600;display:flex;align-items:center;justify-content:center}.calendar-done-marker{position:absolute;top:2px;right:2px;font-size:.6rem;color:#22c55e}.calendar-legend{display:flex;gap:var(--space-lg);margin-top:var(--space-md);justify-content:center}.legend-item{display:flex;align-items:center;gap:var(--space-xs);font-size:.75rem;color:var(--color-text-muted)}.legend-dot{width:8px;height:8px;border-radius:50%}.legend-dot.log-dot{background:var(--color-accent-primary)}.legend-dot.todo-dot{background:var(--color-accent-secondary)}.calendar-summary{display:flex;gap:var(--space-md);justify-content:center}.summary-item{display:flex;flex-direction:column;align-items:center;padding:var(--space-md);background:var(--color-bg-secondary);border-radius:var(--radius-lg);border:1px solid rgba(244,114,182,.15);min-width:80px}.summary-value{font-size:1.5rem;font-weight:700;background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.summary-label{font-size:.75rem;color:var(--color-text-muted)}.detail-section-title{font-size:.9rem;font-weight:600;color:var(--color-text-primary);margin-bottom:var(--space-md);display:flex;align-items:center;gap:var(--space-sm)}.detail-count{background:var(--color-accent-primary);color:#fff;font-size:.7rem;padding:2px 6px;border-radius:10px}.detail-empty{font-size:.875rem;color:var(--color-text-muted);text-align:center;padding:var(--space-md)}.calendar-detail-item{display:flex;justify-content:space-between;align-items:center;padding:var(--space-sm) var(--space-md);background:var(--color-bg-glass);border-radius:var(--radius-md)}.calendar-detail-item.completed{opacity:.6}.detail-item-content{flex:1}.detail-item-title{font-weight:500;font-size:.9rem}.detail-item-title.completed{text-decoration:line-through}.detail-item-time{font-size:.75rem;color:var(--color-text-muted);margin-left:var(--space-sm)}.detail-item-memo{font-size:.8rem;color:var(--color-text-secondary);margin-top:var(--space-xs)}.detail-item-actions{display:flex;gap:var(--space-xs)}.btn-icon{width:28px;height:28px;border-radius:50%;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast);font-size:.875rem}.btn-icon.complete{background:#22c55e1a;color:#22c55e}.btn-icon.complete:hover{background:#22c55e;color:#fff}.btn-icon.delete{background:transparent;color:var(--color-text-muted)}.btn-icon.delete:hover{background:#ef44441a;color:#ef4444}.mastery-badge.small{width:20px;height:20px;font-size:.65rem}.calendar-day[data-intensity="1"]{background:var(--mastery-1)}.calendar-day[data-intensity="2"]{background:var(--mastery-2)}.calendar-day[data-intensity="3"]{background:var(--mastery-3)}.calendar-day[data-intensity="4"]{background:var(--mastery-4)}.calendar-day[data-intensity="5"]{background:var(--mastery-5)}.dashboard-grid{display:grid;grid-template-columns:2fr 1fr;gap:var(--space-xl)}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-lg);margin-bottom:var(--space-xl)}.stat-card{background:var(--color-bg-card);border-radius:var(--radius-lg);padding:var(--space-lg);text-align:center;border:1px solid rgba(255,255,255,.05)}.stat-value{font-size:2rem;font-weight:700;background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-label{font-size:.875rem;color:var(--color-text-secondary);margin-top:var(--space-xs)}.recommendation-list{display:flex;flex-direction:column;gap:var(--space-md)}.recommendation-item{display:flex;width:100%;gap:var(--space-md);padding:var(--space-md);background:var(--color-bg-glass);border-radius:var(--radius-md);align-items:flex-start;color:inherit;text-align:left}.recommendation-rank{width:28px;height:28px;background:var(--color-accent-gradient);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.875rem;flex-shrink:0}.recommendation-content{flex:1}.recommendation-title{font-weight:600;margin-bottom:var(--space-xs)}.recommendation-meta{font-size:.75rem;color:var(--color-text-muted)}.recommendation-reasons{display:flex;flex-wrap:wrap;gap:var(--space-xs);margin-top:var(--space-sm)}.reason-tag{font-size:.7rem;padding:2px 6px;border-radius:100px;background:#6366f133;color:var(--color-accent-primary)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#2d2d3a80;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--space-lg)}.modal{background:var(--color-bg-secondary);border-radius:var(--radius-xl);max-width:500px;width:100%;max-height:90vh;overflow-y:auto;border:1px solid rgba(244,114,182,.3);box-shadow:var(--shadow-lg)}.modal:focus-visible{outline:3px solid rgba(236,72,153,.65);outline-offset:3px}.modal-header{padding:var(--space-lg);border-bottom:1px solid rgba(244,114,182,.15);display:flex;align-items:center;justify-content:space-between}.modal-title{font-size:1.25rem;font-weight:700}.modal-close{width:32px;height:32px;border-radius:var(--radius-sm);background:transparent;color:var(--color-text-secondary);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.modal-close:hover{background:var(--color-bg-tertiary);color:var(--color-text-primary)}.modal-body{padding:var(--space-lg)}.modal-footer{padding:var(--space-lg);border-top:1px solid rgba(244,114,182,.15);display:flex;gap:var(--space-md);justify-content:flex-end}.page-title{font-size:1.75rem;font-weight:700;margin-bottom:var(--space-xl)}.last-studied{font-size:.75rem;color:var(--color-text-muted);margin-top:var(--space-sm)}.nav-badge{background:var(--color-accent-secondary);color:#fff;font-size:.65rem;padding:2px 6px;border-radius:10px;margin-left:var(--space-xs);font-weight:600}.todo-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-lg)}.todo-header .page-title{margin-bottom:0}.todo-list{display:flex;flex-direction:column;gap:var(--space-lg)}.todo-section{display:flex;flex-direction:column;gap:var(--space-md)}.todo-section-title{font-size:1rem;font-weight:600;color:var(--color-text-primary);display:flex;align-items:center;gap:var(--space-sm)}.todo-count{background:var(--color-accent-primary);color:#fff;font-size:.75rem;padding:2px 8px;border-radius:10px}.todo-item{display:flex;align-items:flex-start;gap:var(--space-md);padding:var(--space-md);background:var(--color-bg-secondary);border:1px solid rgba(244,114,182,.15);border-radius:var(--radius-lg);transition:all var(--transition-fast)}.todo-item:hover{border-color:#f472b64d}.todo-item.completed{opacity:.6}.todo-item.completed .todo-title{text-decoration:line-through}.todo-item.overdue{border-color:#ef44444d;background:#ef44440d}.todo-checkbox{flex-shrink:0}.checkbox{width:28px;height:28px;border-radius:50%;border:2px solid var(--color-accent-primary);background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;font-size:.875rem;transition:all var(--transition-fast)}.checkbox:hover:not(:disabled){background:#f472b61a}.checkbox.checked{background:var(--color-accent-primary);cursor:default}.todo-content{flex:1;min-width:0}.todo-title{font-weight:500;color:var(--color-text-primary);margin-bottom:var(--space-xs)}.todo-description{font-size:.875rem;color:var(--color-text-secondary);margin-bottom:var(--space-sm)}.todo-meta{display:flex;flex-wrap:wrap;gap:var(--space-md);font-size:.75rem;color:var(--color-text-muted)}.todo-due.overdue{color:#ef4444;font-weight:500}.todo-repeat{color:var(--color-accent-secondary)}.todo-delete{flex-shrink:0;width:28px;height:28px;border-radius:50%;border:none;background:transparent;color:var(--color-text-muted);cursor:pointer;font-size:1.25rem;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.todo-delete:hover{background:#ef44441a;color:#ef4444}.todo-empty{text-align:center;padding:var(--space-xl);color:var(--color-text-muted)}.todo-toggle-completed{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:transparent;border:1px solid rgba(244,114,182,.15);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:.875rem;cursor:pointer;transition:all var(--transition-fast)}.todo-toggle-completed:hover{background:var(--color-bg-glass)}.todo-completed-list{display:flex;flex-direction:column;gap:var(--space-sm);margin-top:var(--space-sm)}.notification-device-toggle{width:100%;display:flex;justify-content:space-between;align-items:center;margin-top:8px;padding:12px 14px;border:1px solid rgba(244,114,182,.25);border-radius:12px;background:#f472b60f;color:var(--color-text-primary);font:inherit;font-weight:600;cursor:pointer}.notification-device-toggle:hover{background:#f472b61f}.notification-device-panel{display:flex;flex-direction:column;gap:8px;padding:14px;border:1px solid rgba(244,114,182,.18);border-radius:12px;background:#ffffff8c}.notification-device-panel>p,.notification-device-empty{margin:0 0 4px;color:var(--color-text-muted);font-size:.85rem}.notification-device-option{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:10px;background:var(--color-bg-secondary);cursor:pointer}.notification-device-option input{width:18px;height:18px;accent-color:#f472b6}.notification-device-option span{display:flex;flex-direction:column;gap:2px}.notification-device-option small{color:var(--color-text-muted)}.notification-status{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md);border-radius:var(--radius-lg);margin-bottom:var(--space-lg);font-size:.875rem}.notification-status.granted{background:#22c55e1a;color:#22c55e;border:1px solid rgba(34,197,94,.2)}.notification-status.unsupported{background:#f59e0b1a;color:#f59e0b;border:1px solid rgba(245,158,11,.2)}.notification-tutorial{background:var(--color-bg-secondary);border:1px solid rgba(244,114,182,.2);border-radius:var(--radius-lg);margin-bottom:var(--space-lg);overflow:hidden}.tutorial-toggle{width:100%;display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md);background:transparent;border:none;color:var(--color-text-primary);font-size:.9rem;cursor:pointer;text-align:left}.toggle-arrow{margin-left:auto;font-size:.75rem;color:var(--color-text-muted)}.tutorial-content{padding:0 var(--space-md) var(--space-md)}.tutorial-header{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md)}.tutorial-header h3{font-size:.9rem;font-weight:600}.tutorial-text{font-size:.875rem;color:var(--color-text-secondary);margin-bottom:var(--space-md)}.tutorial-section h4{font-size:.9rem;font-weight:600;margin-bottom:var(--space-md);color:var(--color-text-primary)}.tutorial-note{font-size:.75rem;color:var(--color-text-muted);margin-bottom:var(--space-md)}.tutorial-steps{display:flex;flex-direction:column;gap:var(--space-md)}.tutorial-steps ol{padding-left:var(--space-lg);font-size:.875rem;color:var(--color-text-secondary)}.tutorial-steps ol li{margin-bottom:var(--space-sm)}.step{display:flex;gap:var(--space-md)}.step-number{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--color-accent-gradient);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.875rem;font-weight:600}.step-content{flex:1}.step-content 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