*,:before,:after{box-sizing:border-box}:root{--bg:#f8f9fa;--surface:#fff;--border:#e2e8f0;--text:#1a202c;--text-muted:#718096;--primary:#6b7280;--primary-dark:#4b5563;--danger:#f74f4f;--radius:10px;--shadow:0 2px 8px #00000014;font-family:Hiragino Sans,Hiragino Kaku Gothic ProN,Noto Sans JP,system-ui,sans-serif}body{background:var(--bg);color:var(--text);-webkit-user-select:none;user-select:none;margin:0;font-size:14px}#root{min-height:100svh}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit}.splash-screen{z-index:9999;background:#fff;justify-content:center;align-items:center;transition:opacity .6s;display:flex;position:fixed;inset:0}.splash-fade-out{opacity:0;pointer-events:none}.splash-content{flex-direction:column;align-items:center;gap:20px;display:flex}.splash-logo{opacity:0;animation:.6s forwards splash-logo-in;transform:scale(.7)}@keyframes splash-logo-in{to{opacity:1;transform:scale(1)}}.splash-letters{gap:4px;display:flex}.splash-letter{letter-spacing:.05em;color:#1a1a1a;opacity:0;font-size:48px;font-weight:700;animation:.5s forwards splash-letter-in;transform:translateY(16px)}@keyframes splash-letter-in{to{opacity:1;transform:translateY(0)}}.login-screen{flex-direction:column;justify-content:center;align-items:center;gap:24px;height:100vh;display:flex}.login-logo{flex-direction:column;align-items:center;gap:16px;margin-bottom:8px;display:flex}.login-title-letters{letter-spacing:.05em;color:#1a1a1a;gap:4px;font-size:48px;font-weight:700;display:flex}.login-btn-hidden{opacity:0;pointer-events:none}.login-btn-visible{animation:.6s forwards fade-in}@keyframes fade-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.login-btn{color:#fff;cursor:pointer;background:#6b7280;border:none;border-radius:8px;padding:12px 24px;font-size:15px}.settings-body{padding:16px}.settings-import-btn{width:100%;color:var(--text);border:1px solid var(--border);cursor:pointer;text-align:center;background:0 0;border-radius:6px;margin-bottom:8px;padding:10px;font-size:14px;display:block}.settings-logout-btn{width:100%;color:var(--text-muted);border:1px solid var(--border);cursor:pointer;background:0 0;border-radius:6px;padding:10px;font-size:14px}.app{max-width:1200px;margin:0 auto;padding:0 16px 40px}.app-header{border-bottom:1px solid var(--border);align-items:center;margin-bottom:16px;padding:16px 0 12px;display:flex}.app-header h1{color:var(--text);margin:0;font-size:20px;font-weight:700}.loading{text-align:center;color:var(--text-muted);padding:60px;font-size:16px}.firebase-error{color:#7a5c00;background:#fff8e1;border:1px solid #f6c90e;border-radius:8px;margin-bottom:16px;padding:12px 16px;font-size:14px}.firebase-error code{background:#fdefc3;border-radius:4px;padding:1px 5px;font-size:13px}.split-layout{flex-direction:column;gap:12px;display:flex}.split-calendar,.split-panel{width:100%}.month-view{padding-top:8px}.month-nav{justify-content:flex-start;align-items:center;margin-bottom:8px;display:flex;position:relative}.month-nav h2{text-align:center;margin:0;font-size:18px;font-weight:700}.month-nav-arrow{cursor:pointer;color:var(--text-muted);background:0 0;border:none;border-radius:8px;padding:4px 12px;font-size:18px;transition:background .15s}.month-nav-arrow:hover{background:#efefef}.nav-btn-group{align-items:center;gap:4px;display:flex;position:absolute;right:5mm}.nav-icon-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;padding:6px;transition:background .15s,color .15s;display:flex}.nav-icon-btn:hover{color:var(--text);background:#efefef}.import-btn{color:var(--text-muted);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;padding:6px;transition:background .15s,color .15s;display:flex;position:absolute;right:13mm}.import-btn:hover{color:var(--text);background:#efefef}.bulk-delete-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;padding:6px;transition:background .15s,color .15s;display:flex;position:absolute;right:21mm}.bulk-delete-btn:hover{color:#e53e3e;background:#efefef}.search-modal{flex-direction:column;align-self:flex-start;max-height:80svh;margin-top:60px;display:flex}.search-input-wrap{border-bottom:1px solid var(--border);padding:12px 16px}.search-input{border:1px solid var(--border);width:100%;color:var(--text);background:var(--bg);box-sizing:border-box;border-radius:8px;padding:8px 12px;font-size:14px}.search-input:focus{border-color:var(--primary);outline:none}.search-results{margin:0;padding:8px 0;list-style:none;overflow-y:auto}.search-empty{text-align:center;color:var(--text-muted);padding:24px;font-size:14px}.search-result-item{cursor:pointer;align-items:center;gap:12px;padding:10px 16px;display:flex}.search-result-item:hover{background:#f4f4f4}.search-result-dot{border-radius:50%;flex-shrink:0;width:10px;height:10px}.search-result-body{flex:1;min-width:0}.search-result-title{color:var(--text);font-size:14px;font-weight:600}.search-result-date{color:var(--text-muted);margin-top:2px;font-size:12px}@keyframes slideFromRight{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes slideFromLeft{0%{opacity:0;transform:translate(-100%)}to{opacity:1;transform:translate(0)}}.calendar-grid-wrapper{border-radius:var(--radius);overflow:hidden}.calendar-grid{border:1px solid var(--border);border-radius:var(--radius);background:var(--border);grid-template-columns:repeat(7,1fr);gap:1px;display:grid;overflow:hidden}.calendar-grid.slide-from-right{animation:.25s slideFromRight}.calendar-grid.slide-from-left{animation:.25s slideFromLeft}.weekday-header{background:var(--surface);text-align:center;color:var(--text-muted);padding:4px;font-size:10px;font-weight:600}.weekday-header.sun{color:#e53e3e}.weekday-header.sat{color:#3182ce}.calendar-day{background:var(--surface);cursor:pointer;height:100px;padding:0 2px 2px;transition:background .1s;position:relative;overflow:hidden}.calendar-day:hover{background:#f4f4f4}.calendar-day.other-month{background:#fafafa}.calendar-day.other-month .day-number span{color:silver}.calendar-day.other-month.sun .day-number span{color:#e8a8a8}.calendar-day.other-month.sat .day-number span{color:#a8bfe0}.calendar-day.other-month.holiday .day-number span{color:#e8a8a8}.calendar-day.selected{background:#d0d0d0}.calendar-day.sun .day-number span{color:#e53e3e}.calendar-day.sat .day-number span{color:#3182ce}.calendar-day.holiday .day-number span{color:#e53e3e}.calendar-day.today .day-number span{font-weight:700}.day-number{align-items:center;gap:3px;margin-bottom:2px;display:flex;overflow:hidden}.day-number span:not(.memo-inline){flex-shrink:0;font-size:13px;font-weight:600;line-height:1;display:inline-block}.memo-inline{white-space:nowrap;text-overflow:ellipsis;flex:1;margin-left:1.5mm;font-size:8px;font-weight:500;overflow:hidden;color:#e53e3e!important}.add-btn-small{color:var(--text-muted);opacity:0;background:0 0;border:none;padding:0 2px;font-size:16px;line-height:1;transition:opacity .15s}.calendar-day:hover .add-btn-small{opacity:1}.add-btn-small:hover{color:var(--primary)}.day-events{flex-direction:column;gap:2px;display:flex}.event-chip{color:#fff;white-space:nowrap;text-overflow:ellipsis;border-radius:4px;align-items:center;gap:3px;padding:2px 5px;font-size:11px;display:flex;overflow:hidden}.chip-time{opacity:.85;flex-shrink:0;font-size:10px}.chip-title{text-overflow:ellipsis;overflow:hidden}.event-text{color:var(--text);white-space:nowrap;border-radius:3px;padding:1px 4px;font-size:11px;font-weight:700;line-height:1.4;overflow:hidden}.event-more{color:var(--text-muted);padding:0 2px;font-size:10px}.day-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;display:flex;overflow:hidden}.day-panel-header{border-bottom:1px solid var(--border);background:#f8f8f8;justify-content:space-between;align-items:center;padding:5px 14px;display:flex}.day-panel-title{align-items:baseline;gap:6px;display:flex}.day-panel-date{color:var(--text);font-size:13px;font-weight:700}.day-panel-dow{color:var(--text-muted);font-size:13px}.day-panel-empty{text-align:center;color:var(--text-muted);padding:30px 16px;font-size:14px}.day-panel-empty p{margin:0}.day-panel-list{flex-direction:column;gap:6px;margin:0;padding:8px;list-style:none;display:flex}.move-banner{color:#7a5c00;background:#fff3cd;border:1px solid #f6c90e;border-radius:8px;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px;padding:8px 14px;font-size:13px;display:flex}.move-banner-actions{flex-shrink:0;gap:6px;display:flex}.move-banner button{color:#7a5c00;background:0 0;border:1px solid #f6c90e;border-radius:6px;padding:4px 10px;font-size:12px}.move-banner button.active{background:#f6c90e;font-weight:700}.day-panel-item{border-left:3px solid var(--primary);cursor:pointer;background:#f8f8f8;border-radius:0 8px 8px 0;align-items:flex-start;gap:10px;padding:10px 12px;display:flex}.day-panel-item.moving{opacity:.4;background:#fff3cd}.day-panel-item-time{color:var(--text-muted);flex-shrink:0;min-width:75px;padding-top:2px;font-size:12px}.drive-btn{opacity:.7;border-radius:4px;flex-shrink:0;align-items:center;padding:2px;transition:opacity .15s;display:flex}.drive-btn:hover{opacity:1}.day-panel-item-body{flex:1;min-width:0}.day-panel-item-title{font-size:14px;font-weight:600}.day-panel-item-desc{color:var(--text-muted);white-space:pre-wrap;margin-top:2px;font-size:12px}.add-btn{background:var(--primary);color:#fff;border:none;border-radius:8px;padding:5px 10px;font-size:10px;font-weight:600;transition:background .15s}.add-btn:hover{background:var(--primary-dark)}.event-actions{flex-shrink:0;gap:4px;display:flex}.icon-btn{background:0 0;border:none;border-radius:4px;padding:3px;font-size:15px;transition:background .1s}.icon-btn:hover{background:#0000000f}.modal-overlay{z-index:1000;background:#00000073;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal{background:var(--surface);border-radius:12px;flex-direction:column;width:100%;max-width:440px;max-height:90svh;display:flex;overflow:hidden;box-shadow:0 8px 32px #0000002e}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-header h3{margin:0;font-size:16px}.close-btn{color:var(--text-muted);background:0 0;border:none;border-radius:4px;padding:4px 8px;font-size:18px}.close-btn:hover{background:#f0f0f0}.detail-body{flex-direction:column;gap:12px;padding:16px 20px;display:flex;overflow-y:auto}.detail-row{gap:12px;font-size:14px;display:flex}.detail-label{color:var(--text-muted);flex-shrink:0;min-width:40px}.modal-form{flex-direction:column;gap:14px;padding:20px;display:flex;overflow-y:auto}.modal-form label{color:var(--text-muted);flex-direction:column;gap:6px;font-size:13px;font-weight:600;display:flex}.modal-form input[type=text],.modal-form input[type=date],.modal-form input[type=time],.modal-form textarea{border:1px solid var(--border);color:var(--text);background:var(--bg);border-radius:6px;width:100%;padding:8px 10px;font-size:14px;transition:border-color .15s}.modal-form input:focus,.modal-form textarea:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #6b728026}.required{color:var(--danger)}.time-range{border:1px solid var(--border);background:var(--bg);border-radius:6px;align-items:center;display:flex;overflow:hidden}.time-range-wrap{flex-direction:column;gap:6px;display:flex}.time-range-header{color:var(--text-muted);font-size:13px;font-weight:600;display:flex}.time-range-header span{flex:1}.time-range input[type=time]{background:0 0;border:none;border-radius:0;flex:1;width:0;padding:8px 10px;font-size:14px}.time-range input[type=time]:focus{box-shadow:none;border-color:#0000;outline:none}.time-range-sep{color:var(--text-muted);flex-shrink:0;padding:0 2px;font-size:13px}.time-range:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px #6b728026}.color-picker{gap:10px;margin-top:2px;display:flex}.color-dot{border:3px solid #0000;border-radius:50%;width:28px;height:28px;padding:0;transition:transform .1s,border-color .1s}.color-dot:hover{transform:scale(1.15)}.color-dot.selected{border-color:var(--text);transform:scale(1.1)}.confirm-dialog{max-width:300px;padding:24px 20px 16px}.confirm-message{text-align:center;color:var(--text);margin:0 0 20px;font-size:15px}.confirm-dialog .modal-actions{border-top:none;justify-content:flex-end;gap:10px;padding:0}.modal-actions{border-top:1px solid var(--border);justify-content:space-between;align-items:center;padding:12px 20px;display:flex}.modal-actions-right{gap:10px;margin-left:auto;display:flex}.modal-actions-center{justify-content:center}.modal-actions-center .modal-actions-right{margin-left:0}.btn-delete{color:#f74f4f;background:0 0;border:1px solid #f74f4f;border-radius:8px;padding:8px 18px;font-size:14px}.btn-delete:hover{background:#fff0f0}.btn-cancel{border:1px solid var(--border);color:var(--text-muted);background:0 0;border-radius:8px;padding:8px 18px;font-size:14px}.btn-cancel:hover{background:#f5f5f5}.btn-save{background:var(--primary);color:#fff;border:none;border-radius:8px;padding:8px 22px;font-size:14px;font-weight:600}.btn-save:hover{background:var(--primary-dark)}.btn-save:disabled{opacity:.6;cursor:not-allowed}.memo-title-btns{flex-wrap:wrap;gap:8px;margin-top:6px;display:flex}.memo-title-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:20px;padding:7px 14px;font-size:14px}.memo-title-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.type-tabs{border-bottom:1px solid var(--border);display:flex}.type-tab{color:var(--text-muted);background:0 0;border:none;border-bottom:2px solid #0000;flex:1;margin-bottom:-1px;padding:10px;font-size:14px;font-weight:600}.type-tab.active{color:var(--text);border-bottom-color:var(--text)}.day-panel-memo-section{border-top:1px solid var(--border);flex-direction:column;gap:4px;margin-top:auto;padding:4px 8px;display:flex}.day-panel-memo{cursor:pointer;background:#f5f5f5;border-left:3px solid silver;border-radius:6px;align-items:baseline;gap:8px;padding:5px 12px;display:flex}.day-panel-memo:hover{background:#efefef}.day-panel-memo-title{color:var(--text);white-space:nowrap;text-overflow:ellipsis;flex-shrink:0;max-width:50%;font-size:12px;font-weight:600;overflow:hidden}.day-panel-memo-desc{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:11px;overflow:hidden}.add-sheet{background:var(--surface);border-radius:14px;width:100%;max-width:320px;overflow:hidden;box-shadow:0 8px 32px #0000002e}.add-sheet-btn{text-align:left;background:0 0;border:none;align-items:center;gap:14px;width:100%;padding:18px 20px;display:flex}.add-sheet-btn:hover{background:#f4f4f4}.add-sheet-icon{flex-shrink:0;font-size:24px}.add-sheet-label{flex-direction:column;gap:2px;display:flex}.add-sheet-title{color:var(--text);font-size:15px;font-weight:600}.add-sheet-desc{color:var(--text-muted);font-size:12px}.add-sheet-divider{background:var(--border);height:1px}.memo-fullscreen{z-index:2000;background:var(--surface);flex-direction:column;display:flex;position:fixed;inset:0}.memo-fullscreen-header{border-bottom:1px solid var(--border);color:var(--text);justify-content:space-between;align-items:center;padding:12px 16px;font-size:15px;font-weight:600;display:flex}.memo-fullscreen-header button{background:var(--primary);color:#fff;border:none;border-radius:8px;padding:6px 16px;font-size:14px;font-weight:600}.memo-fullscreen-textarea{color:var(--text);background:var(--surface);resize:none;border:none;outline:none;flex:1;padding:16px;font-family:inherit;font-size:15px;line-height:1.7}@media (width<=700px){.app{padding:0 4px 30px}.split-layout{gap:8px}.event-text{font-size:9px}.calendar-day{height:83px}.event-chip{padding:1px 3px;font-size:10px}.chip-time{display:none}.time-row{grid-template-columns:1fr}.month-nav{justify-content:flex-start}.month-nav h2{min-width:120px;font-size:18px}.month-nav-arrow,.import-btn,.bulk-delete-btn{display:none}.nav-btn-group{gap:0;right:2mm}.nav-icon-btn{padding:10px}.nav-icon-btn svg{width:24px;height:24px}.day-number span:not(.memo-inline){font-size:10px}}