/* Notebook: RemNote-style outliner, flashcards, calendar. Built on the
   site's paper theme (little-web.css variables), no extra fonts. */
.sz-page-notebook main{padding:0 12px}
.nb-layout{max-width:1240px;margin:18px auto;display:grid;grid-template-columns:230px minmax(0,1fr);gap:18px;align-items:start}
.nb-side{position:sticky;top:12px;max-height:calc(100vh - 24px);overflow:auto}
.nb-side h2{margin:0 0 6px!important}
.nb-places a{display:flex!important;align-items:center;justify-content:space-between;padding:5px 6px!important;text-decoration:none!important;border:1px solid transparent}
.nb-places a:hover{background:var(--ow-panel)}
.nb-places a[aria-current=page]{background:var(--ow-panel);border-color:var(--ow-border);color:var(--ow-ink)!important}
.nb-count{font:bold 10px/1 var(--ow-body-font,Tahoma);background:#7a385c;padding:3px 6px;border-radius:9px}
html body.ow-skin .nb-places .nb-count{color:#fff!important}
.nb-search-btn{display:flex!important;width:100%;justify-content:space-between;align-items:center;margin-bottom:12px;background:var(--ow-panel)!important;color:var(--ow-muted)!important}
.nb-search-btn kbd,.nb-kbd{font:10px monospace;border:1px solid var(--ow-border);padding:1px 4px;background:var(--ow-tint);color:var(--ow-muted)}
.nb-side-head{display:flex;align-items:center;justify-content:space-between;gap:6px}
.nb-side-head h2{margin:0!important}
html body.ow-skin .nb-mini{min-height:0;padding:1px 6px!important;font-size:11px!important;margin-left:3px}
html body.ow-skin .nb-linkish{display:block;background:none!important;border:0!important;padding:3px 0!important;min-height:0;color:var(--ow-link)!important;text-decoration:underline;text-underline-offset:2px;font-size:12px!important}
.nb-tree{margin-top:6px;font-size:12.5px}
.nb-tree ul{list-style:none;margin:0;padding:0 0 0 12px;border-left:1px dotted #b9c6b5}
.nb-tree>ul{padding-left:0;border:0}
.nb-tree li{margin:0}
.nb-tree .nb-node{display:flex;align-items:center;gap:3px;padding:2px 0;min-width:0}
.nb-tree .nb-node a{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-decoration:none!important;padding:1px 3px}
.nb-tree .nb-node a:hover{text-decoration:underline!important}
.nb-tree .nb-node a[aria-current=page]{background:var(--ow-panel);outline:1px solid var(--ow-border)}
html body.ow-skin .nb-tree .nb-twist{background:none!important;border:0!important;min-height:0;padding:0!important;width:14px;font-size:9px!important;color:var(--ow-muted)!important}
.nb-tree .nb-ico{font-size:11px;width:14px;text-align:center;flex:none}
.nb-tree .nb-drop{outline:2px dashed #52785e;outline-offset:-1px}

.nb-paper{min-height:70vh}
.nb-view{padding:18px 26px 40px}
.nb-sync{font-variant-numeric:tabular-nums}
.nb-sync.is-saving{color:#735125}.nb-sync.is-error{color:#925350;font-weight:bold}

/* page header */
.nb-crumbs{font-size:11px;color:var(--ow-muted);margin-bottom:6px;display:flex;flex-wrap:wrap;gap:4px}
.nb-crumbs a{text-decoration:none!important}.nb-crumbs a:hover{text-decoration:underline!important}
.nb-crumbs span{color:#9aa896}
.nb-title{display:flex;align-items:flex-start;gap:10px;margin:2px 0 4px}
html body.ow-skin .nb-title textarea{flex:1;font:26px/1.3 var(--ow-heading-font,Georgia)!important;color:#294c3a!important;border:0!important;border-bottom:1px dashed transparent!important;background:transparent!important;resize:none;overflow:hidden;padding:2px 0!important;min-height:0}
html body.ow-skin .nb-title textarea:focus{border-bottom-color:var(--ow-border)!important;outline:none!important}
.nb-meta{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;font-size:11px;color:var(--ow-muted);margin-bottom:14px;padding-bottom:10px;border-bottom:1px dotted var(--ow-border)}
.nb-tools{display:flex;flex-wrap:wrap;gap:6px;margin-left:auto}
html body.ow-skin .nb-tools button{min-height:28px;padding:3px 9px!important;font-size:12px!important}

/* outline */
.nb-outline{list-style:none;margin:0;padding:0}
.nb-outline .nb-kids{list-style:none;margin:0;padding:0 0 0 22px;border-left:1px solid #dfe6d9;margin-left:7px}
.nb-rem{position:relative}
.nb-row{display:flex;align-items:flex-start;gap:4px;padding:1px 0;min-height:28px;border-radius:2px}
.nb-row:hover{background:#f3f6ee}
.nb-row.is-sel{background:#e9f0e3}
.nb-row.nb-drop-before{box-shadow:inset 0 2px 0 #52785e!important}
.nb-row.nb-drop-inside{background:#dce8d5}
html body.ow-skin .nb-toggle{width:14px;min-height:0;padding:0!important;margin-top:6px;border:0!important;background:none!important;font-size:9px!important;color:var(--ow-muted)!important;visibility:hidden}
.nb-rem.has-kids>.nb-row .nb-toggle{visibility:visible}
.nb-bullet{flex:none;width:18px;height:24px;display:grid;place-items:center;cursor:pointer;text-decoration:none!important;margin-top:2px}
.nb-bullet::before{content:"";width:6px;height:6px;border-radius:50%;background:#52785e}
.nb-rem.is-collapsed>.nb-row .nb-bullet::before{box-shadow:0 0 0 4px #c9d6c2!important}
.nb-rem.is-doc>.nb-row .nb-bullet::before{border-radius:1px;width:8px;height:9px;background:#355c85}
.nb-bullet:hover::before{transform:scale(1.4)}
.nb-check{margin:7px 4px 0 2px!important;flex:none}
.nb-body{flex:1;min-width:0;padding:3px 2px}
.nb-text{white-space:pre-wrap;word-break:break-word;line-height:1.55;min-height:21px;cursor:text;font-size:14.5px}
.nb-text:empty::before{content:"Type here…  ([[link]] · question :: answer · {{cloze}} · #tag)";color:#a5b0a2}
.nb-rem.is-done>.nb-row .nb-text{text-decoration:line-through;color:var(--ow-muted)}
html body.ow-skin .nb-edit{display:block;width:100%;font:14.5px/1.55 var(--ow-body-font,Tahoma)!important;border:0!important;background:#fffef2!important;outline:1px solid #cdd8c6!important;padding:0 3px!important;resize:none;overflow:hidden;min-height:22px!important;border-radius:0!important}
.nb-ref{color:#245a93!important;text-decoration:none!important;border-bottom:1px solid #9db6d2;cursor:pointer}
.nb-ref:hover{background:#e8eff8}
.nb-tag{font-size:12px;color:#735125!important;background:#f6efd9;border:1px solid #e1d3a8;padding:0 5px;text-decoration:none!important;cursor:pointer}
.nb-cloze{background:#fbe9a8;padding:0 2px;color:inherit}
.nb-sep{display:inline-block;margin:0 6px;font:bold 11px monospace;color:#7a385c;background:#f7e6ee;border:1px solid #e3c7d4;padding:0 4px;vertical-align:1px}
.nb-back{color:#3f5d48}
.nb-code{font:12.5px monospace;background:#eef1ea;padding:0 3px}
.nb-badges{display:flex;gap:4px;margin:4px 0 0 4px;flex:none}
.nb-badge{font:10px/1.6 var(--ow-body-font,Tahoma);border:1px solid var(--ow-border);padding:0 5px;color:var(--ow-muted);background:var(--ow-panel);white-space:nowrap}
.nb-badge.due{color:#7a385c;border-color:#e3c7d4;background:#fbf1f6}
.nb-badge.rem{color:#735125;border-color:#e1d3a8;background:#faf5e7}
.nb-actions{display:flex;gap:2px;opacity:0;margin-top:3px;flex:none}
.nb-row:hover .nb-actions,.nb-row:focus-within .nb-actions{opacity:1}
html body.ow-skin .nb-actions button{min-height:22px;padding:0 5px!important;font-size:11px!important;background:var(--ow-panel)!important}
.nb-add-first{margin:8px 0 0 40px;font-size:12px;color:var(--ow-muted);cursor:text}
.nb-add-first:hover{color:var(--ow-ink)}

/* sections under a page */
.nb-sub{margin-top:26px;border-top:1px dotted var(--ow-border);padding-top:12px}
.nb-sub h3{margin:0 0 8px!important;font-size:15px!important}
.nb-backlink{padding:7px 10px;border:1px solid #dfe6d9;background:#fbfcf8;margin-bottom:6px}
.nb-backlink small{display:block;color:var(--ow-muted);font-size:11px}
.nb-empty{color:var(--ow-muted);font-size:13px;padding:10px 0}
.nb-hint{font-size:12px;color:var(--ow-muted)}
.nb-ai-box{border:1px dashed #a9bca3;background:#f7faf3;padding:12px 14px;margin-top:10px}
.nb-ai-box ul{margin:6px 0 0;padding-left:18px}
.nb-suggest{display:flex;gap:8px;align-items:flex-start;padding:5px 0;border-bottom:1px dotted #dfe6d9;font-size:13px}

/* practice */
.nb-practice{max-width:680px;margin:0 auto}
.nb-card{border:1px solid var(--ow-border);background:#fffef7;min-height:240px;padding:28px 30px;margin:14px 0;display:flex;flex-direction:column;justify-content:center;background-image:linear-gradient(#f1d0d8 1px,transparent 1px);background-size:100% 28px;background-position:0 52px}
.nb-card .nb-q{font:21px/1.45 var(--ow-heading-font,Georgia);white-space:pre-wrap}
.nb-card .nb-a{margin-top:18px;padding-top:14px;border-top:2px solid #52785e;font-size:16px;white-space:pre-wrap}
.nb-card small{display:block;color:var(--ow-muted);font-size:11px;margin-bottom:12px}
.nb-grades{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
html body.ow-skin .nb-grades button{display:flex;flex-direction:column;align-items:center;min-height:52px}
.nb-grades small{font-size:10px;color:var(--ow-muted)}
html body.ow-skin .nb-grades [data-grade="1"]{background:#f8e6e5!important;border-color:#d8b0ad!important}
html body.ow-skin .nb-grades [data-grade="4"]{background:#e3eef8!important;border-color:#a9c0d8!important}
html body.ow-skin .nb-show{width:100%;min-height:46px!important;font-size:14px!important}
.nb-progress{height:5px;background:#e3eadd;margin:6px 0}
.nb-progress>i{display:block;height:100%;background:#52785e;transition:width .2s}
.nb-heat{display:grid;grid-template-rows:repeat(7,10px);grid-auto-flow:column;grid-auto-columns:10px;gap:2px;margin-top:8px;overflow:auto}
.nb-heat i{background:#e7ece2;outline:1px solid #dfe6d9}
.nb-heat i[data-l="1"]{background:#c4dbbb}.nb-heat i[data-l="2"]{background:#8fb985}.nb-heat i[data-l="3"]{background:#52785e}.nb-heat i[data-l="4"]{background:#2f4f39}

/* calendar */
.nb-cal-head{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:10px}
.nb-cal-head h2{margin:0 auto 0 0!important}
.nb-cal{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));border-top:1px solid var(--ow-border);border-left:1px solid var(--ow-border)}
.nb-cal>div{border-right:1px solid var(--ow-border);border-bottom:1px solid var(--ow-border);min-height:96px;padding:3px 4px;background:var(--ow-panel);min-width:0;cursor:pointer}
.nb-cal .nb-dow{min-height:0;background:var(--ow-tint);font-size:11px;text-align:center;cursor:default;padding:4px}
.nb-cal .is-other{background:#f6f7f1;color:#9aa896}
.nb-cal .is-today{outline:2px solid #52785e;outline-offset:-2px}
.nb-cal .nb-dnum{font-size:11px;color:var(--ow-muted)}
.nb-ev{display:block;font-size:11px;line-height:1.35;padding:1px 4px;margin-top:2px;border-left:3px solid #52785e;background:#eef4ea;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;cursor:pointer;color:var(--ow-ink)}
.nb-ev[data-c=blue]{border-color:#355c85;background:#e7eef6}.nb-ev[data-c=red]{border-color:#925350;background:#f7e9e8}.nb-ev[data-c=amber]{border-color:#b08425;background:#f8f0dc}.nb-ev[data-c=purple]{border-color:#7a385c;background:#f5e6ee}.nb-ev[data-c=gray]{border-color:#7d867a;background:#eef0ec}
.nb-ev.is-shared::after{content:" 👥"}
.nb-ev.is-rem{border-left-style:dotted;background:#faf5e7}
.nb-agenda{margin-top:18px}
.nb-agenda-day{font:bold 12px var(--ow-body-font,Tahoma);margin:12px 0 4px;color:#405a43}
.nb-agenda-item{display:flex;gap:10px;align-items:baseline;padding:6px 8px;border:1px solid #dfe6d9;margin-bottom:4px;background:#fbfcf8;cursor:pointer}
.nb-agenda-item time{font:12px monospace;color:var(--ow-muted);min-width:70px}
.nb-people{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}
.nb-person{display:inline-flex;align-items:center;gap:4px;font-size:11px;border:1px solid var(--ow-border);padding:1px 6px 1px 1px;background:var(--ow-panel)}
.nb-person img{width:18px;height:18px}

/* reminders */
.nb-rem-new{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-start;padding:12px;border:1px solid var(--ow-border);background:var(--ow-tint);margin-bottom:12px}
.nb-rem-new input{flex:1 1 220px}
.nb-parse{font-size:12px;color:#405a43;width:100%;min-height:18px}
.nb-parse.bad{color:#925350}
.nb-remitem{display:flex;gap:12px;align-items:center;padding:8px 10px;border-bottom:1px dotted var(--ow-border)}
.nb-remitem b{display:block;font-weight:normal}
.nb-remitem small{color:var(--ow-muted)}
.nb-remitem .nb-tools{margin-left:auto}

/* graph */
.nb-graph{width:100%;height:560px;border:1px solid var(--ow-border);background:#fbfcf8;display:block;cursor:grab;touch-action:none}

/* modal, popup, toast */
.nb-modal{position:fixed;inset:0;background:rgba(39,54,44,.35);display:grid;place-items:start center;padding:8vh 12px 12px;z-index:1000}
.nb-modal[hidden]{display:none!important}
.nb-modal-box{width:min(560px,100%);background:var(--ow-panel);border:1px solid #8ea38a;max-height:84vh;display:flex;flex-direction:column}
.nb-modal-box.wide{width:min(760px,100%)}
.nb-modal-box .ow-titlebar{align-items:center}
html body.ow-skin .nb-x{min-height:0;padding:0 7px!important;font-size:15px!important;background:none!important;border:0!important}
.nb-modal-body{padding:14px 16px;overflow:auto}
.nb-form{display:grid;gap:10px}
.nb-form label{display:grid;gap:3px;font-size:12px;color:var(--ow-muted)}
.nb-form .nb-row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.nb-form .nb-checks{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:12px;color:var(--ow-ink)}
.nb-form .nb-checks label{display:flex;align-items:center;gap:5px;color:var(--ow-ink)}
.nb-form-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:6px}
html body.ow-skin .nb-primary{background:#52785e!important;color:#fff!important;border-color:#3f6249!important}
html body.ow-skin .nb-primary:hover{background:#456a51!important}
html body.ow-skin .nb-danger{color:#925350!important;border-color:#d8b0ad!important;background:#fbf0ef!important}
.nb-results{list-style:none;margin:8px 0 0;padding:0;max-height:52vh;overflow:auto}
.nb-results li{padding:7px 8px;border-bottom:1px dotted var(--ow-border);cursor:pointer}
.nb-results li[aria-selected=true],.nb-results li:hover{background:var(--ow-tint)}
.nb-results small{display:block;color:var(--ow-muted);font-size:11px}
.nb-popup{position:absolute;z-index:1001;background:var(--ow-panel);border:1px solid #8ea38a;min-width:240px;max-width:380px;max-height:260px;overflow:auto;font-size:13px}
.nb-popup div{padding:5px 9px;cursor:pointer}
.nb-popup div[aria-selected=true],.nb-popup div:hover{background:var(--ow-tint)}
.nb-popup small{color:var(--ow-muted)}
.nb-toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);background:#294c3a;color:#fff;padding:8px 14px;font-size:13px;z-index:1002;display:flex;gap:12px;align-items:center}
html body.ow-skin .nb-toast button{min-height:0;padding:1px 8px!important;font-size:12px!important}
.nb-login{max-width:520px;margin:40px auto;text-align:center}
.nb-features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;text-align:left;margin:18px 0}
.nb-features>div{border:1px solid #dfe6d9;padding:10px 12px;background:#fbfcf8;font-size:12.5px}
.nb-features b{display:block;font:15px var(--ow-heading-font,Georgia)}
.nb-help code{font-size:12px;background:var(--ow-tint);padding:0 4px}
.nb-help table{width:100%;border-collapse:collapse;font-size:12.5px}
.nb-help td{padding:5px 6px;border-bottom:1px dotted var(--ow-border);vertical-align:top}
html body.ow-skin .nb-side-toggle{display:none}

@media (max-width:860px){
  .nb-layout{grid-template-columns:minmax(0,1fr)}
  .nb-side{position:static;max-height:none;display:none}
  .nb-side.is-open{display:block}
  html body.ow-skin .nb-side-toggle{display:inline-block;margin:0 0 10px}
  .nb-view{padding:14px 12px 30px}
  .nb-outline .nb-kids{padding-left:14px}
  .nb-actions{opacity:1}
  .nb-cal>div{min-height:64px}
  .nb-ev{font-size:10px}
  .nb-features{grid-template-columns:1fr}
  .nb-form .nb-row2{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){.nb-progress>i{transition:none}}