:root{
  --bg:#f5f7fa; --card:#fff; --line:#e6e9ef; --text:#1f2533; --muted:#7a8499;
  --primary:#4f6ef7; --primary-d:#3b53d6; --accent:#16b08a; --danger:#e5484d;
  --shadow:0 2px 10px rgba(31,37,51,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6}
a{color:var(--primary);text-decoration:none}
/* ===== 左侧可折叠侧边栏 ===== */
.sidebar{position:fixed;top:0;left:0;bottom:0;width:220px;background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;transition:width .2s ease}
.sidebar .side-head{display:flex;align-items:center;justify-content:space-between;height:58px;padding:0 14px;border-bottom:1px solid var(--line)}
.sidebar .brand{font-weight:700;font-size:16px;color:var(--primary);display:flex;align-items:center;gap:8px;overflow:hidden;white-space:nowrap}
.sidebar .collapse-btn{border:none;background:transparent;color:var(--muted);font-size:22px;line-height:1;cursor:pointer}
.sidebar .nav{flex:1;display:flex;flex-direction:column;gap:4px;padding:12px 10px;overflow-y:auto}
.sidebar .nav a{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:8px;color:var(--muted);font-size:14px}
.sidebar .nav a:hover{background:#f5f7fa}
.sidebar .nav a.active{background:#eef1fe;color:var(--primary);font-weight:600}
.sidebar .nav a .ico{width:20px;text-align:center;font-size:16px}
.sidebar .side-foot{padding:12px 14px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;font-size:13px}
.sidebar .side-foot a{display:flex;align-items:center;gap:8px;color:var(--muted)}
.sidebar .side-foot a.ghost{color:var(--danger)}
.sidebar .side-foot .user{display:flex;align-items:center;gap:8px;color:var(--text)}

/* 折叠态（桌面） */
body.sb-collapsed .sidebar{width:64px}
body.sb-collapsed .sidebar .label{display:none}
body.sb-collapsed .sidebar .nav a{justify-content:center}
body.sb-collapsed .sidebar .side-head{justify-content:center;padding:0}
body.sb-collapsed .sidebar .brand .label{display:none}
body.sb-collapsed .container{margin-left:64px}
body.sb-collapsed .footer{margin-left:64px}
body.sb-collapsed .float-toggle{display:none}

.container{margin-left:220px;max-width:none;margin-top:22px;padding:0 22px;transition:margin-left .2s ease}
.footer{text-align:center;color:var(--muted);font-size:13px;padding:26px;margin-left:220px;transition:margin-left .2s ease}

.float-toggle{display:none;position:fixed;top:12px;left:12px;z-index:70;width:40px;height:40px;
  border-radius:8px;border:1px solid var(--line);background:#fff;color:var(--primary);font-size:22px;cursor:pointer;box-shadow:var(--shadow)}

/* 移动端：侧边栏作为覆盖层 */
@media(max-width:820px){
  .sidebar{transform:translateX(-100%);width:220px}
  body.sb-open .sidebar{transform:translateX(0);box-shadow:0 0 0 100vmax rgba(0,0,0,.3)}
  .container,.footer{margin-left:0!important}
  .float-toggle{display:block}
  body.sb-collapsed .float-toggle{display:block}
}

/* 杂项 */
.muted{color:var(--muted);font-size:13px}
.mini-link{font-size:12px;color:var(--primary)}
.type-switch{display:flex;gap:8px;flex-wrap:wrap}
.type-switch select,.type-switch input{flex:1;min-width:160px}
.cat-table{width:100%;border-collapse:collapse}
.cat-table th,.cat-table td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:middle}
.cat-table th{color:var(--muted);font-weight:600}
.type-custom{background:#64748b}

/* Quill 富文本编辑器 */
.ql-toolbar.ql-snow{border:1px solid var(--line);border-radius:8px 8px 0 0;background:#fafbfe;white-space:normal}
.ql-container.ql-snow{border:1px solid var(--line);border-radius:0 0 8px 8px;min-height:360px}
.ql-editor{font-size:15px;line-height:1.7;min-height:320px}

.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow);margin-bottom:18px}
.grid{display:grid;gap:16px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:820px){.grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}}

h1{font-size:22px;margin:0 0 14px}
h2{font-size:17px;margin:0 0 12px}
h3{font-size:15px;margin:0 0 8px}

.btn{display:inline-block;background:var(--primary);color:#fff;border:none;border-radius:8px;
  padding:9px 16px;font-size:14px;cursor:pointer;transition:.15s}
.btn:hover{background:var(--primary-d)}
.btn.ghost{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn.ghost:hover{background:#eef1fe}
.btn.sm{padding:5px 10px;font-size:13px}
.btn.danger{background:var(--danger)}
.btn.gray{background:#eef0f5;color:var(--text)}

.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:13px;color:var(--muted);margin-bottom:5px}
input[type=text],input[type=password],input[type=email],select,textarea{
  width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-size:14px;
  font-family:inherit;background:#fff;color:var(--text)}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}

.note-list{display:grid;gap:12px}
.note-item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 16px;box-shadow:var(--shadow)}
.note-item h3{margin:0 0 6px}
.note-item h3 a{color:var(--text)}
.note-meta{color:var(--muted);font-size:12px;display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:8px}
.tag{display:inline-block;background:#eef1fe;color:var(--primary);font-size:12px;padding:2px 9px;border-radius:20px;margin:2px 4px 2px 0}
.chip{display:inline-block;font-size:12px;padding:2px 9px;border-radius:20px;background:#eef0f5;color:var(--muted)}
.type-badge{font-size:11px;padding:1px 8px;border-radius:20px;color:#fff}
.type-book{background:#7c5cff}.type-material{background:#16b08a}.type-note{background:#4f6ef7}.type-thought{background:#f59e0b}

.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;box-shadow:var(--shadow);text-align:center}
.stat .num{font-size:28px;font-weight:700;color:var(--primary)}
.stat .lbl{color:var(--muted);font-size:13px;margin-top:4px}

.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.tabs .tab{padding:7px 14px;border:1px solid var(--line);border-radius:20px;background:#fff;cursor:pointer;font-size:13px;color:var(--muted)}
.tabs .tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.panel{display:none}
.panel.active{display:block}

.chart{width:100%;height:420px}
.chart.sm{height:300px}

.empty{text-align:center;color:var(--muted);padding:40px}

.alert{padding:10px 14px;border-radius:8px;margin-bottom:14px;font-size:14px}
.alert.err{background:#fdecec;color:var(--danger)}
.alert.ok{background:#e7f7f0;color:var(--accent)}

.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
.toolbar input,.toolbar select{width:auto}
/* 筛选表单作为同一行内可伸缩的子项，避免被整体折到新建按钮下方 */
.toolbar-filters{display:flex;gap:8px;flex-wrap:wrap;align-items:center;flex:1 1 auto;min-width:0;margin-bottom:0}
.split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:820px){.split{grid-template-columns:1fr}}
.preview{background:#fbfcfe;border:1px dashed var(--line);border-radius:8px;padding:14px;min-height:160px;white-space:pre-wrap;word-break:break-word}
.markdown h1,.markdown h2,.markdown h3{margin:.4em 0}
.markdown p{margin:.4em 0}
.markdown code{background:#eef0f5;padding:1px 5px;border-radius:4px}
.markdown ul{padding-left:20px;margin:.4em 0}

.auth-wrap{max-width:380px;margin:60px auto}