.lesson-plan-page{display:grid;gap:16px}.lesson-plan-viewbar{display:flex;align-items:center;justify-content:space-between;gap:12px}.lesson-plan-view-switch{display:inline-flex;padding:3px;border:1px solid var(--border);border-radius:11px;background:var(--surface-muted,#f8fafc)}.lesson-plan-view-switch button{min-height:34px;padding:6px 13px;border:0;border-radius:8px;background:transparent;color:var(--text-secondary);font:inherit;font-size:13px;font-weight:700;cursor:pointer}.lesson-plan-view-switch button.active{background:var(--surface,#fff);color:var(--primary);box-shadow:var(--shadow)}.lesson-plan-view-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.lesson-plan-layout{display:grid;grid-template-columns:210px minmax(0,1fr);align-items:start;gap:16px}.lesson-folder-panel{position:sticky;top:82px;padding:12px;border:1px solid var(--border);border-radius:15px;background:var(--surface,#fff);box-shadow:var(--shadow)}.lesson-folder-panel-header{display:flex;align-items:center;justify-content:space-between;padding:3px 4px 9px}.lesson-folder-panel-header strong{font-size:13px}.lesson-folder-manage{display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;padding:0;border:0;border-radius:8px;background:transparent;color:var(--text-secondary);cursor:pointer}.lesson-folder-manage:hover{background:var(--primary-bg);color:var(--primary)}.lesson-folder-manage svg{width:16px}.lesson-folder-list{display:grid;gap:3px}.lesson-folder-button{display:grid;grid-template-columns:18px minmax(0,1fr) auto;align-items:center;gap:8px;width:100%;padding:9px;border:0;border-radius:9px;background:transparent;color:var(--text-secondary);font:inherit;font-size:13px;text-align:left;cursor:pointer}.lesson-folder-button svg{width:16px;height:16px}.lesson-folder-button span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lesson-folder-button small{min-width:20px;padding:1px 5px;border-radius:999px;background:var(--bg-secondary);color:var(--text-tertiary);font-size:10px;text-align:center}.lesson-folder-button:hover,.lesson-folder-button.active{background:var(--primary-bg);color:var(--primary-dark)}.lesson-folder-button.active small{background:color-mix(in srgb,var(--primary) 15%,var(--surface));color:var(--primary-dark)}.lesson-plan-main{min-width:0}.lesson-plan-mobile-folder{display:none}.lesson-plan-toolbar{display:grid;grid-template-columns:minmax(190px,1fr) repeat(4,minmax(118px,auto));gap:8px;margin-bottom:14px}.lesson-plan-search{position:relative}.lesson-plan-search svg{position:absolute;top:50%;left:11px;width:16px;height:16px;color:var(--text-tertiary);transform:translateY(-50%);pointer-events:none}.lesson-plan-search .form-input{padding-left:35px}.lesson-plan-filter-clear{white-space:nowrap}.lesson-plan-result-summary{display:flex;justify-content:space-between;gap:10px;margin:0 2px 12px;color:var(--text-tertiary);font-size:12px}.lesson-plan-result-summary strong{color:var(--text-secondary)}.lesson-month-group{display:grid;gap:9px;margin-bottom:18px}.lesson-month-heading{display:flex;align-items:center;gap:9px;margin:0;padding:0 2px;color:var(--text-secondary);font-size:13px;font-weight:800}.lesson-month-heading::after{height:1px;flex:1;background:var(--border-light);content:''}.lesson-month-heading span{font-weight:500;color:var(--text-tertiary)}.lesson-plan-list{display:grid;gap:9px}.lesson-plan-item{overflow:hidden;border:1px solid var(--border);border-radius:14px;background:var(--surface,#fff);box-shadow:var(--shadow);transition:border-color .18s,box-shadow .18s}.lesson-plan-item:hover{border-color:color-mix(in srgb,var(--primary) 22%,var(--border));box-shadow:var(--shadow-md)}.lesson-plan-item.is-expanded{border-color:color-mix(in srgb,var(--primary) 38%,var(--border))}.lesson-plan-toggle{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;width:100%;padding:15px 16px;border:0;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer}.lesson-plan-summary{min-width:0}.lesson-plan-title-line{display:flex;align-items:center;gap:8px;min-width:0}.lesson-plan-title-line strong{overflow:hidden;color:var(--text-primary);font-size:15px;text-overflow:ellipsis;white-space:nowrap}.lesson-plan-title-line .badge{flex:none}.lesson-plan-meta{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:6px;color:var(--text-tertiary);font-size:11px}.lesson-plan-meta span{display:inline-flex;align-items:center;gap:4px}.lesson-plan-meta svg{width:13px;height:13px}.lesson-plan-tags{display:flex;gap:4px;flex-wrap:wrap}.lesson-plan-tag{padding:2px 7px;border-radius:999px;background:var(--bg-secondary);color:var(--text-secondary);font-size:10px}.lesson-plan-excerpt{display:-webkit-box;overflow:hidden;margin:8px 0 0;color:var(--text-secondary);font-size:12px;line-height:1.55;-webkit-box-orient:vertical;-webkit-line-clamp:2}.lesson-plan-chevron{display:flex;width:28px;height:28px;align-items:center;justify-content:center;align-self:center;border-radius:50%;background:var(--bg-secondary);color:var(--text-secondary);transition:transform .18s}.lesson-plan-chevron svg{width:15px}.lesson-plan-item.is-expanded .lesson-plan-chevron{background:var(--primary-bg);color:var(--primary);transform:rotate(180deg)}.lesson-plan-details{padding:0 16px 16px;border-top:1px solid var(--border-light)}.lesson-plan-details-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:7px;flex-wrap:wrap;padding:12px 0}.lesson-plan-content{min-height:72px;padding:18px;border:1px solid var(--border-light);border-radius:12px;background:var(--bg-secondary);color:var(--text-primary);line-height:1.75;overflow-wrap:anywhere}.lesson-plan-loading{display:flex;align-items:center;justify-content:center;min-height:90px;color:var(--text-tertiary);font-size:13px}.lesson-plan-content>:first-child{margin-top:0}.lesson-plan-content>:last-child{margin-bottom:0}.lesson-plan-content h1{font-size:1.55em}.lesson-plan-content h2{font-size:1.32em}.lesson-plan-content h3{font-size:1.16em}.lesson-plan-content h1,.lesson-plan-content h2,.lesson-plan-content h3,.lesson-plan-content h4{margin:1.15em 0 .5em;line-height:1.35}.lesson-plan-content p{margin:.55em 0}.lesson-plan-content ul,.lesson-plan-content ol{padding-left:1.6em}.lesson-plan-content blockquote{margin:.8em 0;padding:8px 13px;border-left:3px solid var(--primary);background:color-mix(in srgb,var(--primary) 5%,var(--surface));color:var(--text-secondary)}.lesson-plan-content pre{overflow:auto;padding:12px;border-radius:9px;background:#111827;color:#e5e7eb}.lesson-plan-content code{padding:.1em .3em;border-radius:4px;background:color-mix(in srgb,var(--text-primary) 8%,transparent);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}.lesson-plan-content pre code{padding:0;background:none}.lesson-plan-content table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse}.lesson-plan-content th,.lesson-plan-content td{padding:7px 10px;border:1px solid var(--border);text-align:left}.lesson-plan-content a{color:var(--primary);text-decoration:underline;text-underline-offset:2px}.lesson-remote-image{display:block;width:auto;max-width:100%;max-height:70vh;margin:12px auto;border:1px solid var(--border);border-radius:10px;background:#fff;object-fit:contain}.lesson-image-invalid{display:block;margin:10px 0;padding:12px;border:1px dashed var(--border);border-radius:9px;background:var(--surface);color:var(--text-tertiary);font-size:12px;text-align:center}.lesson-markdown-fallback{margin:0;white-space:pre-wrap}.lesson-plan-empty-filter{padding:34px 12px;text-align:center;color:var(--text-tertiary)}

.lesson-plan-editor-modal{display:grid;grid-template-rows:auto minmax(0,1fr) auto;max-width:920px;width:min(920px,calc(100vw - 40px));height:min(88vh,860px);overflow:hidden;background:var(--surface,#fff)}.lesson-plan-editor-modal .modal-body{overflow-y:auto}.lesson-plan-editor-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(210px,.8fr);gap:16px}.lesson-plan-editor-main{min-width:0}.lesson-plan-editor-side{padding:14px;border:1px solid var(--border-light);border-radius:12px;background:var(--bg-secondary)}.lesson-editor-tabs{display:flex;align-items:center;gap:5px;margin-bottom:8px}.lesson-editor-tabs button{padding:6px 11px;border:0;border-radius:8px;background:transparent;color:var(--text-secondary);font:inherit;font-size:12px;font-weight:700;cursor:pointer}.lesson-editor-tabs button.active{background:var(--primary-bg);color:var(--primary)}.lesson-editor-actions{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin-bottom:8px}.lesson-editor-actions .form-select{width:auto;min-width:140px}.lesson-editor-write .form-textarea{min-height:42vh;padding:14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;line-height:1.65;tab-size:2}.lesson-editor-preview{min-height:42vh}.lesson-editor-help{margin:8px 0 0;color:var(--text-tertiary);font-size:11px;line-height:1.5}.lesson-image-insert{display:none;grid-template-columns:minmax(190px,1fr) minmax(130px,.5fr) auto;gap:7px;margin-bottom:9px;padding:9px;border:1px solid var(--border);border-radius:10px;background:var(--surface)}.lesson-image-insert.show{display:grid}.lesson-folder-manager{display:grid;gap:8px}.lesson-folder-manager-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;padding:9px;border:1px solid var(--border);border-radius:10px}.lesson-folder-manager-row strong{overflow:hidden;font-size:13px;text-overflow:ellipsis;white-space:nowrap}.lesson-folder-manager-actions{display:flex;justify-content:flex-end;gap:4px;flex-wrap:wrap}.lesson-folder-create{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;padding-top:8px}.lesson-history-context{display:flex;gap:5px;flex-wrap:wrap;margin-top:5px;color:var(--text-tertiary);font-size:10px}.lesson-legacy-date{color:var(--warning,#d97706)}

@media(max-width:960px){.lesson-plan-toolbar{grid-template-columns:minmax(180px,1fr) repeat(2,minmax(120px,auto))}.lesson-plan-editor-grid{grid-template-columns:1fr}.lesson-plan-editor-side{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.lesson-plan-editor-side .form-group{margin:0}}
@media(max-width:760px){.lesson-plan-viewbar{align-items:stretch;flex-direction:column}.lesson-plan-view-actions>.btn{flex:1}.lesson-plan-layout{display:block}.lesson-folder-panel{display:none}.lesson-plan-mobile-folder{display:block;margin-bottom:9px}.lesson-plan-toolbar{grid-template-columns:1fr 1fr}.lesson-plan-search{grid-column:1/-1}.lesson-plan-filter-clear{grid-column:1/-1}.lesson-plan-toggle{padding:14px}.lesson-plan-title-line{align-items:flex-start;flex-wrap:wrap}.lesson-plan-title-line strong{width:100%;white-space:normal}.lesson-plan-details{padding:0 12px 12px}.lesson-plan-details-toolbar{justify-content:flex-start}.lesson-plan-content{padding:14px}.lesson-plan-editor-modal{position:absolute;inset:0;width:100%;height:100%;max-width:none;max-height:none;border-radius:0}.lesson-plan-editor-modal .modal-body{padding:14px}.lesson-plan-editor-grid{display:block}.lesson-plan-editor-side{display:grid;grid-template-columns:1fr 1fr;margin-top:12px}.lesson-plan-editor-side .form-group:first-child{grid-column:1/-1}.lesson-editor-write .form-textarea,.lesson-editor-preview{min-height:44vh}.lesson-image-insert{grid-template-columns:1fr}.lesson-folder-manager-row{grid-template-columns:1fr;align-items:start}.lesson-folder-manager-actions{justify-content:flex-start}}
@media(max-width:440px){.lesson-plan-toolbar{grid-template-columns:1fr}.lesson-plan-search,.lesson-plan-filter-clear{grid-column:auto}.lesson-plan-editor-side{grid-template-columns:1fr}.lesson-plan-editor-side .form-group:first-child{grid-column:auto}.lesson-editor-actions .btn{flex:1}.lesson-editor-actions .form-select{width:100%}}
@media(prefers-reduced-motion:reduce){.lesson-plan-item,.lesson-plan-chevron{transition:none}}
.lesson-plan-content .lesson-image-link{display:block;text-decoration:none}

.lesson-plan-layout.is-history{grid-template-columns:minmax(0,1fr)}
.lesson-plan-export-progress{max-width:280px;color:var(--text-tertiary);font-size:11px;line-height:1.35}.lesson-plan-export-progress:empty{display:none}
.lesson-plan-list-status,.lesson-plan-details-loading{display:flex;align-items:center;justify-content:center;gap:9px;min-height:88px;padding:18px;color:var(--text-tertiary);font-size:13px;text-align:center}.lesson-plan-list-status.is-error{flex-wrap:wrap;color:var(--danger)}.lesson-plan-details-loading{border-top:1px solid var(--border-light)}.lesson-plan-spinner{width:18px;height:18px;flex:none;border:2px solid color-mix(in srgb,var(--primary) 22%,transparent);border-top-color:var(--primary);border-radius:50%;animation:lesson-plan-spin .75s linear infinite}.lesson-plan-load-more{display:flex;justify-content:center;padding:4px 0 18px}.lesson-plan-load-more .btn{min-width:128px}@keyframes lesson-plan-spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.lesson-plan-spinner{animation:none;border-color:var(--primary)}}