/* ============ 学习工作台 · 主样式 ============ */
:root{
  --primary:#F6E3A1;          /* 低饱和浅黄 */
  --accent:#F6C6D0;           /* 浅粉 */
  --bg:#FBF8F1;
  --panel:#FFFFFF;
  --panel-op:0.92;            /* 容器透明度 */
  --radius:18px;              /* 圆角/直角切换 */
  --radius-s:12px;
  --text:#3E3A33;
  --muted:#9A937F;
  --line:#EFE9DA;
  --ok:#7FB77E;
  --warn:#E8A87C;
  --danger:#E07B7B;
  --shadow:0 6px 24px rgba(120,100,60,.08);
  --side-w:232px;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Segoe UI","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:
    radial-gradient(1000px 500px at 85% -10%, color-mix(in srgb, var(--accent) 35%, transparent), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, color-mix(in srgb, var(--primary) 40%, transparent), transparent 60%),
    var(--bg);
  overflow:hidden;
}
button{font-family:inherit;color:inherit;border:none;background:none;cursor:pointer}
input,textarea,select{font-family:inherit;color:inherit;font-size:14px}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--muted) 30%,transparent);border-radius:8px}
svg{display:block}
.hidden{display:none!important}

#app{display:flex;height:100vh;height:100dvh}

/* ============ 侧边导航 ============ */
#sidebar{
  width:var(--side-w);flex:none;display:flex;flex-direction:column;
  background:linear-gradient(180deg,
    color-mix(in srgb, var(--primary) 55%, #fff),
    color-mix(in srgb, var(--accent) 45%, #fff));
  border-right:1px solid var(--line);
  padding:14px 12px calc(10px + env(safe-area-inset-bottom));
  z-index:40;
}
.ws-head{display:flex;align-items:center;gap:10px;padding:8px;border-radius:var(--radius-s);cursor:pointer}
.ws-head:hover{background:rgba(255,255,255,.5)}
#wsAvatar{width:44px;height:44px;border-radius:14px;object-fit:cover;background:#fff;box-shadow:var(--shadow)}
#wsName{font-weight:700;font-size:15px;line-height:1.3;word-break:break-all}
.ws-sub{font-size:11px;color:var(--muted)}
#nav{flex:1;overflow-y:auto;margin-top:10px;display:flex;flex-direction:column;gap:2px}
.side-item{
  display:flex;align-items:center;gap:11px;width:100%;
  padding:10px 12px;border-radius:var(--radius-s);
  font-size:14px;text-align:left;transition:background .15s;
}
.side-item svg{flex:none;opacity:.85}
.side-item:hover{background:rgba(255,255,255,.55)}
.side-item.active{background:rgba(255,255,255,.85);font-weight:600;box-shadow:var(--shadow)}
.side-item .si-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-foot{border-top:1px solid rgba(255,255,255,.6);padding-top:8px;display:flex;flex-direction:column;gap:2px}

/* ============ 主区域 ============ */
#main{flex:1;display:flex;flex-direction:column;min-width:0}
#topbar{
  display:flex;align-items:center;gap:10px;
  padding:12px 18px 10px;flex:none;
}
#btnMenu{display:none}
#pageTitle{font-size:19px;font-weight:700;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.top-actions{display:flex;gap:8px}
#page{flex:1;overflow-y:auto;padding:4px 18px calc(24px + env(safe-area-inset-bottom));-webkit-overflow-scrolling:touch}

/* 卡片 */
.card{
  background:rgba(255,255,255,var(--panel-op));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:16px;margin-bottom:14px;
}
.card-title{font-weight:700;font-size:15px;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.card-title .sub{font-weight:400;font-size:12px;color:var(--muted)}
.page-hero{
  background:linear-gradient(120deg,
    color-mix(in srgb,var(--primary) 60%,#fff),
    color-mix(in srgb,var(--accent) 55%,#fff));
  border:none;
}
.hero-date{font-size:22px;font-weight:800;letter-spacing:.5px}
.hero-sub{font-size:13px;color:#7d7663;margin-top:4px}
.hero-row{display:flex;align-items:flex-end;justify-content:space-between;gap:10px;flex-wrap:wrap}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:calc(var(--radius-s) - 2px);
  background:var(--primary);font-size:13px;font-weight:600;
  transition:filter .15s, transform .05s;border:1px solid rgba(0,0,0,.04);
}
.btn:hover{filter:brightness(.97)}
.btn:active{transform:scale(.97)}
.btn.accent{background:var(--accent)}
.btn.ghost{background:rgba(255,255,255,.8);border:1px solid var(--line)}
.btn.danger{background:var(--danger);color:#fff}
.btn.small{padding:6px 10px;font-size:12px}
.icon-btn{
  width:34px;height:34px;border-radius:10px;display:inline-flex;
  align-items:center;justify-content:center;transition:background .15s;flex:none;
}
.icon-btn:hover{background:rgba(0,0,0,.06)}

/* 富文本编辑器 */
.rich-wrap{border:1px solid var(--line);border-radius:var(--radius-s);overflow:hidden;background:rgba(255,255,255,.7)}
.rich-bar{display:flex;gap:2px;flex-wrap:wrap;padding:6px 8px;border-bottom:1px solid var(--line);background:rgba(250,247,240,.8)}
.rich-bar button{padding:5px 8px;border-radius:8px;font-size:12px;color:#6b6552;display:inline-flex;align-items:center;gap:4px}
.rich-bar button:hover{background:rgba(0,0,0,.06)}
.rich{min-height:140px;max-height:60vh;overflow-y:auto;padding:12px 14px;font-size:14px;line-height:1.75;outline:none}
.rich.compact{min-height:70px}
.rich:empty::before{content:attr(data-ph);color:var(--muted)}
.rich img{max-width:100%;border-radius:10px;margin:4px 0}
.rich audio,.rich video{max-width:100%;margin:4px 0;border-radius:10px}
.rich iframe{width:100%;aspect-ratio:16/9;border:none;border-radius:10px;margin:4px 0}
.rich h4{margin:8px 0 4px}
.rich ul,.rich ol{padding-left:22px}
.rich blockquote{border-left:3px solid var(--accent);padding-left:10px;color:#7a7466;margin:6px 0}

/* Tab */
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.tab{padding:7px 14px;border-radius:999px;font-size:13px;background:rgba(255,255,255,.75);border:1px solid var(--line)}
.tab.active{background:var(--primary);font-weight:700;border-color:transparent}

/* 历史面板 */
#historyPanel{
  position:fixed;top:0;right:-400px;width:min(400px,92vw);height:100%;
  background:rgba(255,253,248,.98);box-shadow:-8px 0 30px rgba(0,0,0,.12);
  z-index:60;transition:right .25s ease;display:flex;flex-direction:column;
  border-left:1px solid var(--line);
}
#historyPanel.open{right:0}
#historyPanel header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line)}
#historyTitle{font-weight:700}
#historyBody{flex:1;overflow-y:auto;padding:12px 16px}
.h-item{border:1px solid var(--line);border-radius:var(--radius-s);padding:12px;margin-bottom:10px;background:#fff}
.h-item .h-label{font-weight:700;font-size:13px;margin-bottom:2px}
.h-item .h-time{font-size:11px;color:var(--muted);margin-bottom:6px}
.h-item .h-content{font-size:13px;line-height:1.7;max-height:220px;overflow-y:auto}
.h-item .h-content img{max-width:100%;border-radius:8px}
.h-empty{color:var(--muted);text-align:center;padding:40px 0;font-size:13px}

/* 弹窗 */
.overlay{
  position:fixed;inset:0;background:rgba(60,50,30,.35);z-index:80;
  display:flex;align-items:center;justify-content:center;padding:16px;
  animation:fadeIn .15s ease;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{
  width:min(480px,100%);max-height:88vh;display:flex;flex-direction:column;
  background:#fffdf8;border-radius:var(--radius);box-shadow:0 20px 60px rgba(0,0,0,.2);
  animation:pop .18s ease;
}
.modal.wide{width:min(720px,100%)}
@keyframes pop{from{transform:scale(.96);opacity:0}to{transform:scale(1);opacity:1}}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 8px}
.modal-title{font-weight:700;font-size:16px}
.modal-body{padding:8px 16px;overflow-y:auto}
.modal-foot{display:flex;justify-content:flex-end;gap:8px;padding:12px 16px}
.field{margin-bottom:12px}
.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px}
.field input[type=text],.field input[type=number],.field input[type=date],.field input[type=datetime-local],
.field select,.field textarea{
  width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;outline:none;
}
.field textarea{min-height:90px;resize:vertical}
.field input:focus,.field textarea:focus{border-color:var(--accent)}

/* Toast */
#toastBox{position:fixed;top:16px;left:50%;transform:translateX(-50%);z-index:100;display:flex;flex-direction:column;gap:8px;align-items:center}
.toast{
  background:rgba(50,45,35,.9);color:#fff;font-size:13px;padding:9px 18px;
  border-radius:999px;box-shadow:var(--shadow);animation:pop .2s ease;max-width:86vw;
}

/* ============ 自由布局组件区 ============ */
.wzone{margin-top:4px}
.wzone-bar{display:flex;align-items:center;gap:10px;margin-bottom:10px;padding:10px 12px;
  border:1.5px dashed color-mix(in srgb,var(--accent) 70%,#999);border-radius:var(--radius-s);
  background:color-mix(in srgb,var(--accent) 12%,#fff);}
.wzone-hint{font-size:12px;color:var(--muted);flex:1}
.wcanvas{position:relative;min-height:0}
.wzone-empty{color:var(--muted);font-size:13px;text-align:center;padding:34px 14px;line-height:1.8;
  border:1.5px dashed color-mix(in srgb,var(--accent) 50%,#cfc9bb);border-radius:var(--radius-s);
  background:color-mix(in srgb,var(--accent) 8%,#fff)}
.wcanvas.empty::after{content:'';display:none}
.widget{
  position:absolute;display:flex;flex-direction:column;
  background:rgba(255,255,255,var(--panel-op));
  border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.widget.editing{border:1.5px dashed color-mix(in srgb,var(--accent) 80%,#888)}
.whead{display:flex;align-items:center;gap:6px;padding:8px 10px;border-bottom:1px solid var(--line);
  font-size:13px;font-weight:700;background:rgba(252,249,242,.9);user-select:none}
.widget.editing .whead{cursor:grab}
.whead .wname{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.whead .icon-btn{width:26px;height:26px}
.wbody{flex:1;overflow:auto;padding:10px;position:relative}
.wresize{position:absolute;right:0;bottom:0;width:22px;height:22px;cursor:nwse-resize;z-index:5;
  display:flex;align-items:flex-end;justify-content:flex-end;padding:4px;color:var(--muted)}
/* 清单 */
.ck-item{display:flex;align-items:center;gap:8px;padding:5px 2px;font-size:13px}
.ck-item input[type=checkbox]{width:17px;height:17px;accent-color:var(--ok)}
.ck-item.done .ck-text{text-decoration:line-through;color:var(--muted)}
.ck-text{flex:1;word-break:break-all}
.ck-add{display:flex;gap:6px;margin-top:6px}
.ck-add input{flex:1;padding:6px 10px;border:1px solid var(--line);border-radius:8px;outline:none}
.ck-prog{font-size:11px;color:var(--muted);margin-bottom:4px}
.ck-del{color:var(--muted);font-size:15px;padding:0 4px}
/* 倒计时 */
.cd-num{font-size:30px;font-weight:800;text-align:center;margin:8px 0 2px;font-variant-numeric:tabular-nums}
.cd-sub{text-align:center;font-size:12px;color:var(--muted)}
/* 日历 */
.cal{font-size:12px}
.cal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;font-weight:700}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:2px;text-align:center}
.cal-grid .dow{color:var(--muted);font-size:10px;padding:2px 0}
.cal-cell{padding:5px 0;border-radius:8px;cursor:pointer;position:relative}
.cal-cell:hover{background:rgba(0,0,0,.05)}
.cal-cell.today{background:var(--primary);font-weight:700}
.cal-cell.marked::after{content:'';position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--danger)}
.cal-cell.other{color:#ccc}
/* 媒体容器 */
.media-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;height:100%;min-height:90px;color:var(--muted);font-size:12px}
.wbody img.media-full{width:100%;height:100%;object-fit:cover;border-radius:8px}
.wbody video.media-full{width:100%;border-radius:8px}
.wbody audio{width:100%}

/* 组件库选择 */
.wlib{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px}
.wlib button{border:1px solid var(--line);border-radius:var(--radius-s);padding:12px 6px;display:flex;flex-direction:column;align-items:center;gap:6px;font-size:12px;background:#fff}
.wlib button:hover{background:color-mix(in srgb,var(--primary) 25%,#fff)}

/* 记账 */
.led-sum{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}
.led-sum .card{margin:0;text-align:center;padding:12px}
.led-sum .n{font-size:20px;font-weight:800}
.led-sum .t{font-size:12px;color:var(--muted)}
.led-item{display:flex;align-items:center;gap:10px;padding:9px 4px;border-bottom:1px dashed var(--line);font-size:13px}
.led-item .cat{background:color-mix(in srgb,var(--primary) 40%,#fff);border-radius:6px;padding:2px 8px;font-size:11px}
.led-item .amt{font-weight:700;font-variant-numeric:tabular-nums}
.led-item .amt.in{color:#C0392B}
.led-item .amt.out{color:#1E8449}
.led-item .note{flex:1;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tag{display:inline-block;background:color-mix(in srgb,var(--accent) 35%,#fff);border-radius:6px;padding:1px 7px;font-size:11px;margin-right:4px}

/* 新闻 */
.news-item{padding:11px 4px;border-bottom:1px dashed var(--line)}
.news-item a{color:var(--text);text-decoration:none;font-size:14px;font-weight:600;line-height:1.5}
.news-item a:hover{text-decoration:underline}
.news-meta{font-size:11px;color:var(--muted);margin-top:3px}
.badge-ai{display:inline-block;background:var(--accent);border-radius:5px;padding:1px 6px;font-size:10px;font-weight:700;margin-right:6px}

/* 打卡格 */
.chk-days{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.chk-day{width:34px;height:34px;border-radius:9px;background:#F0EDE4;display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--muted)}
.chk-day.on{background:var(--ok);color:#fff;font-weight:700}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px;margin-top:10px}
.gallery .g-item{position:relative;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:#fff}
.gallery img,.gallery video{width:100%;height:96px;object-fit:cover;display:block}
.gallery .g-del{position:absolute;top:4px;right:4px;background:rgba(0,0,0,.5);color:#fff;border-radius:6px;width:20px;height:20px;font-size:12px;line-height:20px;text-align:center}

/* 笔记卡片 */
.note-card{margin-bottom:12px}
.note-title{width:100%;border:none;outline:none;font-weight:700;font-size:15px;background:transparent;margin-bottom:6px}
.note-meta{display:flex;align-items:center;justify-content:space-between;margin-top:8px;font-size:11px;color:var(--muted)}

/* 设置页 */
.set-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);flex-wrap:wrap}
.set-row:last-child{border-bottom:none}
.set-row .lbl{font-size:13px;font-weight:600;min-width:90px}
.swatches{display:flex;gap:8px;flex-wrap:wrap}
.swatch{width:56px;height:36px;border-radius:10px;border:2px solid transparent;cursor:pointer;position:relative;overflow:hidden}
.swatch.active{border-color:#3E3A33}
.nav-edit-item{display:flex;align-items:center;gap:8px;padding:7px 0;border-bottom:1px dashed var(--line)}
.nav-edit-item input{flex:1;padding:6px 10px;border:1px solid var(--line);border-radius:8px;outline:none;min-width:0}
.icon-pick-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:6px}
.icon-pick-grid button{border:1px solid var(--line);border-radius:10px;padding:9px 0;display:flex;justify-content:center}
.icon-pick-grid button:hover{background:color-mix(in srgb,var(--primary) 30%,#fff)}
input[type=range]{accent-color:var(--accent)}
input[type=color]{width:44px;height:32px;border:1px solid var(--line);border-radius:8px;padding:2px;background:#fff}

/* 导入预览 */
.imp-block{border:1px solid var(--line);border-radius:var(--radius-s);padding:10px;margin-bottom:10px;background:#fff}
.imp-block .imp-head{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.imp-block select{padding:5px 8px;border:1px solid var(--line);border-radius:8px}
.imp-text{font-size:12px;color:#6b6552;max-height:110px;overflow-y:auto;white-space:pre-wrap;line-height:1.6}

/* 空状态 */
.empty{color:var(--muted);font-size:13px;text-align:center;padding:26px 0}

/* ============ 移动端 ============ */
@media (max-width: 900px){
  #sidebar{
    position:fixed;left:0;top:0;height:100%;transform:translateX(-105%);
    transition:transform .25s ease;box-shadow:8px 0 30px rgba(0,0,0,.15);
  }
  #sidebar.open{transform:translateX(0)}
  #mask{position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:35;opacity:0;pointer-events:none;transition:opacity .25s}
  #mask.show{opacity:1;pointer-events:auto}
  #btnMenu{display:inline-flex}
  #page{padding:4px 12px calc(24px + env(safe-area-inset-bottom))}
  #topbar{padding:10px 12px 8px}
  .led-sum{grid-template-columns:repeat(3,1fr);gap:6px}
  .hero-date{font-size:19px}
}
@media (min-width: 901px){
  #mask{display:none}
}