/* ============================================================
   管理後台樣式
   ============================================================ */
:root{
  --bg:#eef1ee;
  --panel:#f9fbf9;
  --paper:#ffffff;
  --ink:#26312c;
  --muted:#727e77;
  --line:#dde3de;
  --green:#526f61;
  --green2:#e4ece7;
  --red:#a34c45;
  --amber:#8a6a32;
  --radius:14px;
  --sans:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 var(--sans);-webkit-font-smoothing:antialiased}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
.hidden{display:none!important}
.muted{color:var(--muted)}

/* login */
.login{min-height:100vh;display:grid;place-items:center;padding:24px;background:
  radial-gradient(circle at 20% 10%,#e3ebe4,transparent 45%),
  radial-gradient(circle at 85% 90%,#e7ece7,transparent 40%),var(--bg)}
.login-card{width:min(400px,100%);background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:34px 30px;box-shadow:0 24px 60px rgba(30,45,35,.10)}
.login-card .brand{font-size:20px;font-weight:750;font-family:"Noto Serif TC",Georgia,serif}
.login-card .brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:.18em;font-weight:500;margin-top:4px}
.login-card p{color:var(--muted);font-size:13px;margin:18px 0 16px}
.login-card .field{margin-bottom:12px}
.login-msg{font-size:12px;color:var(--red);min-height:18px;margin-top:10px}
.login-hint{font-size:11.5px;color:#9aa198;margin-top:14px;line-height:1.6}

/* shell */
.shell{min-height:100vh;display:grid;grid-template-columns:236px 1fr}
aside{background:#f7f9f7;border-right:1px solid var(--line);padding:24px 16px;display:flex;flex-direction:column;gap:24px;position:sticky;top:0;height:100vh}
.brand{padding:0 10px;font-weight:750;font-size:16px}
.brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:.14em;font-weight:500;margin-top:3px}
.nav-label{font-size:10px;letter-spacing:.14em;color:#9aa198;padding:0 12px;margin-bottom:7px}
aside nav{display:flex;flex-direction:column;gap:2px}
aside nav button{width:100%;border:0;background:transparent;text-align:left;padding:11px 12px;border-radius:10px;color:#59645b;display:flex;gap:10px;align-items:center;font-size:13.5px}
aside nav button.active,aside nav button:hover{background:var(--green2);color:var(--green);font-weight:650}
.aside-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:14px;display:flex;flex-direction:column;gap:8px;font-size:12px}
.aside-foot a,.aside-foot button{border:0;background:transparent;text-align:left;padding:8px 10px;border-radius:8px;color:var(--muted)}
.aside-foot a:hover,.aside-foot button:hover{background:var(--green2);color:var(--green)}

main{min-width:0}
.topbar{height:64px;background:rgba(247,249,247,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 32px;position:sticky;top:0;z-index:5}
.topbar .crumb{color:var(--muted);font-size:12.5px}
.sync{font-size:12px;color:var(--green);min-height:18px}
.sync.err{color:var(--red)}
.content{max-width:1080px;margin:0 auto;padding:30px 32px 70px}

.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.eyebrow{color:var(--green);font-size:10px;letter-spacing:.16em;font-weight:750;text-transform:uppercase}
.page-head h1{font-size:24px;letter-spacing:-.02em;margin:5px 0 2px}
.page-head p{margin:0;color:var(--muted);font-size:13px}

/* buttons */
.btn{border:1px solid var(--line);background:var(--paper);border-radius:10px;padding:9px 14px;color:var(--ink);font-weight:600;font-size:13px;transition:.15s;display:inline-flex;align-items:center;gap:6px}
.btn:hover{border-color:#c3cec5;transform:translateY(-1px)}
.btn.primary{background:var(--green);color:#fff;border-color:var(--green)}
.btn.primary:hover{background:#476052;border-color:#476052}
.btn.danger{color:var(--red)}
.btn.small{padding:6px 10px;font-size:12px}
.btn:disabled{opacity:.55;cursor:default;transform:none}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.stat span{font-size:12px;color:var(--muted)}
.stat strong{display:block;font-size:26px;margin-top:7px;font-weight:700;letter-spacing:-.02em}

/* panel */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:18px}
.panel-head{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.panel-head h2{font-size:14.5px;margin:0}
.toolbar{display:flex;gap:10px;padding:15px 20px;flex-wrap:wrap}
.toolbar input{flex:1;min-width:180px}

/* fields */
.field,textarea,select{width:100%;border:1px solid #dce3dd;background:#fff;border-radius:9px;padding:10px 11px;color:var(--ink);outline:none;transition:.15s}
.field:focus,textarea:focus,select:focus{border-color:#91a99a;box-shadow:0 0 0 3px #eaf0eb}
textarea{resize:vertical}
label.fld{display:block;font-size:12px;color:#687269;margin:0 0 6px;font-weight:650}

/* table */
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:13px 20px;border-top:1px solid #edf0eb;vertical-align:top}
th{font-size:11px;color:#899188;font-weight:600;background:#fcfdfb;border-top:0}
td{font-size:13px}
.item-title{font-weight:650}
.item-sub{font-size:11.5px;color:var(--muted);margin-top:3px;max-width:520px}
.actions{display:flex;gap:6px;flex-wrap:wrap}
.empty{text-align:center;padding:46px 20px;color:var(--muted);font-size:13px}
.pill{display:inline-flex;padding:4px 9px;border-radius:99px;font-size:11px;background:#f0f2ef;color:#657067;white-space:nowrap}
.pill.public{background:#e8f2eb;color:#477253}
.pill.private{background:#f2edf7;color:#76568b}
.pill.draft{background:#f8f1e4;color:#8a6a32}

/* editor */
.editor{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:16px;align-items:start}
.editor-main,.editor-side{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.editor-main .field,.editor-main textarea{margin-bottom:16px}
.editor-main textarea.body{min-height:340px;line-height:1.8}
.editor-side .field,.editor-side select{margin-bottom:15px}
.hint{background:#f1f5f2;border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-size:12px;color:var(--muted);margin-bottom:16px;line-height:1.6}
.notice{background:#fff8e9;border:1px solid #f0e4c9;color:#7b6335;border-radius:10px;padding:12px 14px;font-size:12px;margin-bottom:18px}

/* library */
.work-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.work-chip{border:1px solid var(--line);background:var(--paper);border-radius:99px;padding:8px 14px;font-size:13px;color:var(--muted);display:inline-flex;gap:8px;align-items:center}
.work-chip:hover{border-color:#c3cec5;color:var(--ink)}
.work-chip.active{background:var(--green);border-color:var(--green);color:#fff;font-weight:650}
.work-chip.add{border-style:dashed}
.lib-work{display:flex;gap:18px;align-items:flex-start;padding:20px;flex-wrap:wrap}
.lib-cover{width:132px;height:88px;border-radius:11px;object-fit:cover;background:#e8eeea;border:1px solid var(--line);display:grid;place-items:center;font-family:"Noto Serif TC",Georgia,serif;font-size:30px;color:#fff;flex:0 0 132px;overflow:hidden}
.lib-work-info{flex:1;min-width:200px}
.lib-work-info h2{font-size:19px;margin:0 0 6px}
.lib-work-info p{margin:0 0 12px;color:var(--muted);font-size:13px}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:13px;padding:18px 20px}
.cat-card{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:15px;display:flex;flex-direction:column;gap:8px}
.cat-card.active{border-color:#8fa898;box-shadow:0 0 0 3px #eaf0eb}
.cat-card h3{font-size:15px;margin:0}
.cat-card .muted{font-size:11.5px}
.cat-card .actions{margin-top:auto;padding-top:4px}
.group-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;padding:18px 20px}
.group-card{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:10px;display:flex;flex-direction:column;gap:7px}
.group-img{aspect-ratio:4/3;border-radius:8px;background:#e8eeea;border:1px solid var(--line);display:grid;place-items:center;font-size:22px;color:#718278;object-fit:cover;width:100%}
.group-name{font-weight:650;font-size:13px;text-align:center;overflow-wrap:anywhere}
.group-card .actions{justify-content:center}

/* settings */
.settings-box{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;max-width:680px}
.settings-box .field,.settings-box textarea{margin-bottom:16px}
.settings-box textarea{min-height:100px}

/* demo banner */
.demo-banner{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);background:#2f3b34;color:#eef3ef;font-size:12px;padding:9px 16px;border-radius:99px;z-index:50;box-shadow:0 10px 30px rgba(0,0,0,.18)}

@media(max-width:900px){
  .shell{grid-template-columns:1fr}
  aside{position:static;height:auto;flex-direction:row;align-items:center;gap:14px;padding:12px 14px;overflow:auto;border-right:0;border-bottom:1px solid var(--line)}
  aside .brand{display:none}
  aside nav{flex-direction:row;gap:4px}
  aside nav button{white-space:nowrap;padding:8px 11px}
  .aside-foot{margin:0 0 0 auto;border:0;padding:0;flex-direction:row}
  .topbar{padding:0 18px}
  .content{padding:22px 16px 60px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .editor{grid-template-columns:1fr}
  .panel{overflow-x:auto}
  table{min-width:680px}
}