/* admin.css — 練息場後台（Apple 藍圖風）樣式。
   刻意與品牌 design-system.css 分離：後台走 Apple-blueprint 視覺（--blue:#0071e3、SF Pro），
   與顧客端的練息場 brand 視覺（design-system.css，--blue:#2F6BD8、源柔黑體）是兩套系統，勿合併。
   本檔由 admin.html 內嵌 <style> 原封搬出（一字未改），只為讓 admin.html 變薄、樣式可被後台工具頁共用。 */
:root{
  --blue:#0071e3; --blue-ink:#0058b9; --blue-soft:#eef5fd;
  --ink:#1d1d1f; --ink-2:#515154; --ink-3:#86868b; --line:#e3e3e7; --bg:#f5f5f7; --surface:#fff;
  --green:#1a7f37; --green-soft:#e6f4ea; --amber:#9a6700; --amber-soft:#fbf1d8; --red:#c1271f; --red-soft:#fbe9e8;
  --head:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang TC","Heiti TC",sans-serif;
  --body:ui-rounded,"SF Pro Rounded",-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;
  --r:14px;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:var(--body);background:var(--bg);color:var(--ink);font-size:14.5px;line-height:1.6;-webkit-font-smoothing:antialiased;}
h1,h2,h3,h4{font-family:var(--head);font-weight:800;letter-spacing:-.02em;line-height:1.2;}
a{color:var(--blue-ink);}
button{font-family:inherit;cursor:pointer;}

/* 登入 */
#login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(1000px 500px at 50% -10%,var(--blue-soft),var(--bg) 60%);}
.login-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:40px 38px;width:100%;max-width:400px;box-shadow:0 20px 60px rgba(0,0,0,.08);text-align:center;}
.login-card .logo{width:172px;height:auto;display:block;margin:0 auto 20px;}
.login-card h2{font-size:22px;} .login-card p{color:var(--ink-2);font-size:14px;margin:8px 0 22px;}
.login-card input{width:100%;border:1px solid var(--line);border-radius:12px;padding:13px 15px;font-family:inherit;font-size:15px;outline:none;}
.login-card input:focus{border-color:var(--blue);}
.login-card .go{width:100%;margin-top:14px;border:none;background:var(--blue);color:#fff;border-radius:12px;padding:14px;font-family:inherit;font-weight:700;font-size:15px;}
.login-card .note{font-size:12px;color:var(--ink-3);margin-top:16px;}
.login-card .err{color:var(--red);font-size:13px;margin-top:12px;min-height:18px;}

/* app shell */
#app{display:none;min-height:100vh;}
#app.show{display:grid;grid-template-columns:240px 1fr;}
.side{background:#fff;border-right:1px solid var(--line);padding:18px 14px;display:flex;flex-direction:column;gap:3px;position:sticky;top:0;height:100vh;overflow-y:auto;}
.side .brand{font-family:var(--head);font-weight:800;font-size:16px;padding:6px 10px 14px;display:flex;align-items:center;gap:9px;}
.side .brand .dot{width:30px;height:auto;display:block;}
.side .grp{font-size:11px;color:var(--ink-3);font-weight:700;letter-spacing:.5px;padding:14px 10px 4px;}
.nav-i{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;cursor:pointer;color:var(--ink-2);font-size:14px;transition:.12s;}
.nav-i:hover{background:var(--bg);} .nav-i.on{background:var(--blue);color:#fff;font-weight:600;}
.nav-i .ic{width:18px;height:18px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;opacity:.85;}
.nav-i.on .ic{opacity:1;} .nav-i.lock{opacity:.4;cursor:not-allowed;}
/* 側欄最下方的「操作說明」外連（新分頁開說明頁，不是後台分頁）*/
.nav-x{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:var(--ink-2);
  font-size:14px;text-decoration:none;transition:.12s;margin-top:auto;}
.nav-x:hover{background:var(--bg);color:var(--blue);}
.nav-x .ic{width:18px;height:18px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;opacity:.85;}
.side .who{margin-top:auto;padding:12px 10px 4px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-2);}
.side .who b{color:var(--ink);} .side .who .lo{color:var(--blue-ink);font-size:12.5px;cursor:pointer;margin-top:4px;display:inline-block;}

.main{padding:26px 32px;max-width:1080px;margin:0 auto;width:100%;}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap;}
.topbar h1{font-size:25px;}
.tb-right{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.userchip{display:flex;align-items:center;gap:9px;margin-left:4px;}
.userchip .avatar{width:32px;height:32px;border-radius:50%;background:var(--blue-soft);color:var(--blue-ink);display:grid;place-items:center;font-weight:800;font-family:var(--head);flex:none;}
.userchip .lo{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink-2);cursor:pointer;padding:0;transition:background .12s,color .12s,border-color .12s;}
.userchip .lo:hover{background:var(--blue-soft);color:var(--blue-ink);border-color:var(--blue-soft);}
.scope-note{background:var(--blue-soft);color:var(--blue-ink);border-radius:12px;padding:10px 15px;font-size:13.5px;margin-bottom:20px;}
.cards{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr));}
.cards.tight{gap:12px;grid-template-columns:repeat(auto-fit,minmax(min(100%,158px),1fr));}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;margin-bottom:16px;}
.card:last-child{margin-bottom:0;}
.cards .card,.cards.tight .card{margin-bottom:0;} /* 網格內的卡片間距交給 grid gap，避免雙重間距 */
.kpi .k{font-size:13px;color:var(--ink-3);} .kpi .v{font-family:var(--head);font-weight:800;font-size:30px;margin-top:6px;} .kpi .d{font-size:12.5px;color:var(--green);margin-top:4px;font-weight:700;}
.cards.tight .card{padding:13px 15px;border-radius:12px;}
.cards.tight .kpi .k{font-size:11.5px;} .cards.tight .kpi .v{font-size:22px;margin-top:2px;} .cards.tight .kpi .d{font-size:11px;margin-top:2px;}
.sec{font-size:12px;letter-spacing:.8px;text-transform:uppercase;color:var(--blue);font-weight:700;margin:30px 0 14px;}
.ask{background:linear-gradient(135deg,#fff,var(--blue-soft));border:1px solid var(--blue-soft);border-radius:18px;padding:20px 22px;}
.ask h3{font-size:17px;display:flex;align-items:center;gap:9px;} .ask .spark{width:24px;height:24px;border-radius:8px;background:linear-gradient(135deg,#4aa3ff,var(--blue));}
.ask p{color:var(--ink-2);font-size:13.5px;margin:6px 0 12px;}
.ask-row{display:flex;gap:8px;} .ask-row input{flex:1;border:1px solid var(--line);border-radius:999px;padding:12px 16px;font-family:inherit;font-size:14px;outline:none;background:#fff;}
.ask-row input:focus{border-color:var(--blue);} .ask-row .b{border:none;background:var(--blue);color:#fff;border-radius:999px;padding:0 20px;font-family:inherit;font-weight:700;}
.ask .chips{margin-top:10px;display:flex;gap:8px;flex-wrap:wrap;} .ask .chip{background:#fff;border:1px solid var(--blue-soft);color:var(--blue-ink);border-radius:999px;padding:7px 14px;font-size:13px;cursor:pointer;}
.ask-out{display:none;margin-top:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;} .ask-out.show{display:block;}
.bar{height:10px;border-radius:999px;background:var(--bg);overflow:hidden;margin:3px 0;} .bar i{display:block;height:100%;background:var(--blue);border-radius:999px;}

table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;font-size:14px;margin-top:4px;}
th,td{padding:12px 15px;text-align:left;border-bottom:1px solid var(--line);} th{background:var(--bg);font-family:var(--head);font-weight:700;font-size:13px;} tr:last-child td{border-bottom:none;}
.mask{color:var(--ink-3);letter-spacing:1px;}
.pill{display:inline-block;font-size:12px;font-weight:700;border-radius:999px;padding:2px 10px;}
.p-ok{background:var(--green-soft);color:var(--green);} .p-warn{background:var(--amber-soft);color:var(--amber);} .p-low{background:var(--red-soft);color:var(--red);} .p-off{background:#ececef;color:var(--ink-3);}
.panel{display:none;} .panel.on{display:block;}
.placeholder{background:#fff;border:1px dashed var(--line);border-radius:var(--r);padding:34px;text-align:center;color:var(--ink-3);}
.maskbanner{background:var(--amber-soft);color:var(--amber);border-radius:12px;padding:10px 15px;font-size:13.5px;margin-bottom:14px;}
.subtab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 16px;font-family:inherit;font-size:13.5px;cursor:pointer;color:var(--ink-2);text-decoration:none;display:inline-block;}
.subtab.on{background:var(--blue);color:#fff;border-color:var(--blue);font-weight:700;}
/* 章節（CH）／單元（EP）切換列：課程管理與 AI 助教兩頁共用 */
.chtabs{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:12px;}
.chtabs .subtab{font-size:13px;padding:7px 15px;}
.chtabs .subtab .n{font-weight:800;margin-right:5px;}
.chtabs .subtab .cnt{font-size:11.5px;opacity:.7;margin-left:5px;}
.chtabs .subtab.off{border-style:dashed;color:var(--ink-3);}
.chtabs .subtab.on.off{background:var(--ink-3);border-color:var(--ink-3);color:#fff;}
.eptabs{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:10px;}
.eptabs .subtab{font-size:13px;padding:6px 14px;}
.eptabs .subtab .n{font-weight:800;margin-right:5px;}
.eptabs .subtab.off{border-style:dashed;color:var(--ink-3);}
.eptabs .subtab.on.off{background:var(--ink-3);border-color:var(--ink-3);color:#fff;}
/* 章節切換列上的「測」＝僅測試站，正式站學員看不到 */
.chtabs .subtab .sbx{display:inline-block;margin-left:6px;padding:0 5px;border-radius:5px;background:#F0A24B;color:#fff;font-size:10.5px;font-weight:800;line-height:1.5;vertical-align:1px;}
.chtabs .subtab.on .sbx{background:#fff;color:#C77A22;}
.chempty{border:1px dashed var(--line);border-radius:12px;padding:26px;text-align:center;color:var(--ink-3);font-size:13.5px;background:#fff;}
.perm-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 2px;border-bottom:1px solid var(--line);} .perm-row .pm{font-weight:600;}
.perm-acts{display:flex;gap:16px;} .perm-acts label{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-2);cursor:pointer;user-select:none;}
.tg{width:38px;height:22px;border-radius:999px;background:#d6d6db;position:relative;transition:.15s;flex-shrink:0;display:inline-block;} .tg.on{background:var(--blue);}
.tg::after{content:"";position:absolute;width:18px;height:18px;border-radius:50%;background:#fff;top:2px;left:2px;transition:.15s;box-shadow:0 1px 3px rgba(0,0,0,.2);} .tg.on::after{left:18px;}
/* 權限表格矩陣：單元 × 看/改/刪（角色分頁）*/
.perm-table-wrap{border:1px solid var(--line);border-radius:12px;overflow:hidden;}
.perm-table{width:100%;border-collapse:collapse;margin:0;border:none;border-radius:0;font-size:14px;}
.perm-table thead th{font-size:12px;color:var(--ink-3);font-weight:600;text-align:center;padding:9px 8px;background:var(--bg);border-bottom:1px solid var(--line);font-family:inherit;text-transform:none;letter-spacing:0;}
.perm-table thead th:first-child{text-align:left;padding-left:14px;}
.perm-table td{padding:9px 8px;text-align:center;border-bottom:1px solid var(--line);}
.perm-table td:first-child{text-align:left;padding-left:14px;font-weight:600;color:var(--ink);}
.perm-table tbody tr:last-child td{border-bottom:none;}
.perm-table tbody tr:hover{background:var(--blue-soft);}
.perm-table td.pc-check{width:64px;}
.perm-table input[type=checkbox]{accent-color:var(--blue);width:16px;height:16px;margin:0;cursor:pointer;vertical-align:middle;}
.perm-table input[type=checkbox]:disabled{opacity:.5;cursor:not-allowed;}
.fld{margin-bottom:13px;} .fld label{display:block;font-size:12.5px;font-weight:700;color:var(--ink-2);margin-bottom:5px;}
.fld input,.fld textarea,.fld select{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 13px;font-family:inherit;font-size:14px;outline:none;background:#fbfbfd;}
/* 下拉：自訂 chevron，箭頭不貼右框 */
.fld select{appearance:none;-webkit-appearance:none;padding-right:36px;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2386868b' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 13px center;background-size:12px;}
.fld input:focus,.fld textarea:focus{border-color:var(--blue);background:#fff;} .fld textarea{min-height:78px;resize:vertical;line-height:1.55;}
.btn{border:none;background:var(--blue);color:#fff;border-radius:999px;padding:10px 20px;font-family:inherit;font-weight:700;font-size:14px;}
.btn.ghost{background:#ececef;color:var(--ink);} .btn.sm{padding:7px 15px;font-size:13px;}
/* 師資富文本編輯器 */
.rte-tb{display:flex;gap:6px;margin-bottom:6px;}
.rte-tb button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:5px 12px;font-family:inherit;font-size:13px;cursor:pointer;color:var(--ink-2);}
.rte-tb button:hover{border-color:var(--blue);color:var(--blue);}
.rte{border:1px solid var(--line);border-radius:10px;padding:11px 13px;min-height:76px;font-size:14px;line-height:1.7;background:#fbfbfd;outline:none;}
.rte:focus{border-color:var(--blue);background:#fff;}
.rte a{color:var(--blue);text-decoration:underline;}
.tch-card{border:1px solid var(--line);}
.ai-card{border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;margin-bottom:14px;background:#fff;}
.ai-head{display:flex;align-items:center;gap:11px;margin-bottom:12px;} .ai-dot{width:34px;height:34px;border-radius:9px;color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:13px;}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(80px);background:var(--ink);color:#fff;padding:12px 22px;border-radius:999px;font-size:14px;font-weight:600;transition:.3s;z-index:99;opacity:0;}
.toast.show{transform:translateX(-50%);opacity:1;}
.dim-card{border:1px solid var(--line);border-radius:12px;padding:13px 15px;background:#fff;}
.dim-card .dn{font-weight:800;} .dim-card .dd{font-size:12.5px;color:var(--ink-3);margin-top:2px;}
.item-row{border:1px solid var(--line);border-radius:12px;padding:13px 15px;margin-bottom:10px;background:#fff;}
.tag{display:inline-block;font-size:11px;font-weight:700;color:var(--blue-ink);background:var(--blue-soft);border-radius:6px;padding:1px 7px;margin-right:6px;}
.note-amber{background:var(--amber-soft);color:var(--amber);border-radius:12px;padding:11px 15px;font-size:13px;}
.timeline{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);} .timeline .td{color:var(--ink-3);width:78px;flex-shrink:0;font-size:12.5px;}
@media(max-width:820px){ #app.show{grid-template-columns:1fr;} .side{position:static;height:auto;flex-direction:row;flex-wrap:wrap;overflow:visible;} .side .who{border:none;margin:0;width:100%;} .main{padding:20px 16px;} }
@keyframes improvePulse{0%,100%{border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,107,216,.12);}50%{border-color:#bcd4ee;box-shadow:0 0 0 3px rgba(47,107,216,.04);}}
textarea.improving{animation:improvePulse 1.1s ease-in-out infinite;opacity:.7;}
.subtab.busy{opacity:.7;cursor:progress;}