:root{
  --ink:#0b1f3a;--accent:#0ea5b7;--accent-d:#0b8a99;--paper:#f1f5f9;--line:#e2e8f0;
  --muted:#64748b;--text:#1e293b;--sidebar:#0b1f3a;--sidebar-2:#13294b;
  --radius:14px;--shadow:0 4px 20px rgba(15,23,42,.06);--ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box}
body{margin:0;font-family:"Noto Sans TC",system-ui,sans-serif;background:var(--paper);color:var(--text);-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
h1,h2,h3,h4{font-family:"Sora","Noto Sans TC",sans-serif}

/* Login */
.auth-body{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#0b1f3a,#13294b);padding:1.5rem}
.auth-card{width:100%;max-width:400px;background:#fff;border-radius:20px;padding:2.6rem 2.4rem;box-shadow:0 30px 70px rgba(0,0,0,.3)}
.auth-logo{text-align:center;margin-bottom:1.8rem}
.auth-logo .mark{display:inline-grid;place-items:center;width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,var(--accent),var(--accent-d));color:#fff;font-weight:800;font-size:1.2rem;margin-bottom:.9rem;box-shadow:0 10px 24px rgba(14,165,183,.4)}
.auth-logo h1{font-size:1.3rem;margin:0;color:var(--ink)}
.auth-logo p{color:var(--muted);font-size:.9rem;margin:.3rem 0 0}
.auth-card .field{margin-bottom:1.1rem}
.auth-card label{display:block;font-weight:600;font-size:.9rem;margin-bottom:.4rem}
.auth-card .inp{position:relative}
.auth-card .inp i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted)}
.auth-card input{width:100%;padding:.85rem 1rem .85rem 2.6rem;border:1.5px solid var(--line);border-radius:10px;font:inherit;background:var(--paper);transition:all .2s}
.auth-card input:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px rgba(14,165,183,.12)}
.auth-card button{width:100%;padding:.9rem;border:0;border-radius:10px;background:var(--accent);color:#fff;font-weight:700;font-size:1rem;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:.5rem}
.auth-card button:hover{background:var(--accent-d)}
.auth-alert{background:#fdeaea;color:#c0392b;padding:.8rem 1rem;border-radius:10px;font-size:.9rem;margin-bottom:1.2rem;display:flex;gap:.5rem;align-items:center}

/* Layout */
.admin-body{display:flex;min-height:100vh}
.admin-sidebar{width:248px;background:linear-gradient(180deg,var(--sidebar),var(--sidebar-2));color:#fff;display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:50;transition:transform .3s var(--ease)}
.side-brand{display:flex;align-items:center;gap:.7rem;padding:1.4rem 1.5rem;font-weight:800;font-size:1.15rem;border-bottom:1px solid rgba(255,255,255,.1)}
.side-mark{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,var(--accent),var(--accent-d));font-size:.85rem;font-weight:800}
.side-nav{flex:1;padding:1rem .8rem;overflow-y:auto}
.side-nav a{display:flex;align-items:center;gap:.8rem;padding:.8rem 1rem;border-radius:10px;color:rgba(255,255,255,.75);font-weight:500;margin-bottom:.2rem;transition:all .2s}
.side-nav a i{font-size:1.15rem}
.side-nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.side-nav a.active{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(14,165,183,.35)}
.side-foot{padding:1rem 1.5rem;border-top:1px solid rgba(255,255,255,.1);color:rgba(255,255,255,.6);font-size:.9rem;display:flex;gap:.5rem;align-items:center}
.side-foot:hover{color:#fff}

.admin-main{flex:1;margin-left:248px;display:flex;flex-direction:column;min-width:0}
.admin-top{height:68px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:1rem;padding:0 1.6rem;position:sticky;top:0;z-index:40}
.side-toggle{display:none;border:0;background:0;font-size:1.5rem;color:var(--ink);cursor:pointer}
.top-title{font-size:1.2rem;margin:0;flex:1}
.top-user{display:flex;align-items:center;gap:1rem;font-size:.92rem}
.top-user span{color:var(--muted)}
.top-user-name{color:var(--muted);font-weight:600;padding:.4rem .7rem;border-radius:8px;transition:all .2s}
.top-user-name:hover{background:var(--paper);color:var(--accent)}
.btn-logout{padding:.5rem 1rem;border-radius:8px;background:var(--paper);color:var(--text);font-weight:600;transition:all .2s}
.btn-logout:hover{background:#fdeaea;color:#c0392b}
.admin-content{padding:1.8rem;flex:1}

.adm-alert{padding:.9rem 1.2rem;border-radius:10px;margin-bottom:1.4rem;font-weight:600;display:flex;gap:.5rem;align-items:center}
.adm-alert.ok{background:#e7f7f1;color:#0a7d52}
.adm-alert.err{background:#fdeaea;color:#c0392b}

/* Stat cards */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;margin-bottom:1.8rem}
.stat-box{background:#fff;border-radius:var(--radius);padding:1.4rem 1.5rem;box-shadow:var(--shadow);display:flex;align-items:center;gap:1rem}
.stat-box .ic{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;font-size:1.5rem;color:#fff;flex-shrink:0}
.stat-box .n{font-family:"Sora";font-weight:800;font-size:1.7rem;line-height:1}
.stat-box .l{color:var(--muted);font-size:.88rem;margin-top:.2rem}

/* Card / table */
.card-k{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.card-k .card-head{display:flex;justify-content:space-between;align-items:center;padding:1.2rem 1.5rem;border-bottom:1px solid var(--line);gap:1rem;flex-wrap:wrap}
.card-k .card-head h2{font-size:1.1rem;margin:0}
.card-body{padding:1.5rem}
.table-k{width:100%;border-collapse:collapse}
.table-k th,.table-k td{padding:.85rem 1rem;text-align:left;border-bottom:1px solid var(--line);font-size:.92rem;vertical-align:middle}
.table-k th{background:var(--paper);font-weight:700;color:var(--muted);font-size:.82rem;text-transform:uppercase;letter-spacing:.03em}
.table-k tbody tr:hover{background:#f8fafc}
.table-k img.thumb{width:64px;height:42px;object-fit:cover;border-radius:6px;background:var(--paper)}
.badge-s{display:inline-block;padding:.2rem .65rem;border-radius:50px;font-size:.78rem;font-weight:700}
.badge-s.on{background:#e7f7f1;color:#0a7d52}
.badge-s.off{background:#f1f5f9;color:#94a3b8}
.badge-s.new{background:#fff3e0;color:#e08600}

.btn-a{display:inline-flex;align-items:center;gap:.4rem;padding:.5rem 1.05rem;border-radius:8px;font-weight:600;font-size:.9rem;border:1.5px solid transparent;cursor:pointer;transition:all .2s;background:none}
.btn-a.primary{background:var(--accent);color:#fff}
.btn-a.primary:hover{background:var(--accent-d)}
.btn-a.ghost{border-color:var(--line);color:var(--text);background:#fff}
.btn-a.ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-a.sm{padding:.35rem .7rem;font-size:.84rem}
.btn-a.danger{color:#c0392b;border-color:#f3d0d0;background:#fff}
.btn-a.danger:hover{background:#fdeaea}
.row-actions{display:flex;gap:.4rem;justify-content:flex-end}
.row-actions form{display:inline}

/* Forms */
.form-k{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:1.8rem;width:100%}
.form-k.narrow{max-width:760px}
.form-grid{display:grid;grid-template-columns:1fr 320px;gap:1.8rem;align-items:start}
.fldrow2{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem}
@media(max-width:768px){.fldrow2{grid-template-columns:1fr}}
.fld{margin-bottom:1.2rem}
.fld:last-child{margin-bottom:0}
.fld label{display:block;font-weight:600;margin-bottom:.45rem;font-size:.9rem}
.fld .req{color:#e23}
.fld input[type=text],.fld input[type=email],.fld input[type=number],.fld input[type=url],.fld input[type=datetime-local],.fld select,.fld textarea{
  width:100%;padding:.7rem .9rem;border:1.5px solid var(--line);border-radius:9px;font:inherit;background:#fff;transition:all .2s}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(14,165,183,.12)}
.fld textarea{resize:vertical;min-height:90px}
.fld .hint{color:var(--muted);font-size:.82rem;margin-top:.35rem}
.fld-side{background:var(--paper);border-radius:var(--radius);padding:1.3rem}
.form-actions{display:flex;gap:.8rem;margin-top:1.6rem;padding-top:1.4rem;border-top:1px solid var(--line)}
.ck-editor__editable{min-height:280px}

/* Dropzone */
.dropzone{border:2px dashed var(--line);border-radius:12px;padding:1.4rem;text-align:center;cursor:pointer;transition:all .2s;background:#fff}
.dropzone:hover,.dropzone.drag{border-color:var(--accent);background:#f0fbfc}
.dropzone .dz-prompt i{font-size:2rem;color:var(--accent);display:block;margin-bottom:.5rem}
.dropzone .dz-prompt p{margin:0;color:var(--muted);font-size:.88rem}
.dropzone input[type=file]{display:none}
.dz-preview{max-width:100%;max-height:200px;margin:0 auto;border-radius:8px;display:none}
.cur-img{margin-top:.8rem}
.cur-img img{max-width:100%;max-height:160px;border-radius:8px;border:1px solid var(--line)}

.empty-row{text-align:center;padding:3rem;color:var(--muted)}
.empty-row i{font-size:2.5rem;display:block;margin-bottom:.6rem;color:var(--line)}

.dash-grid{display:grid;grid-template-columns:1fr;gap:1.5rem}
.msg-list .msg-item{display:flex;justify-content:space-between;gap:1rem;padding:.9rem 0;border-bottom:1px solid var(--line)}
.msg-list .msg-item:last-child{border:0}
.msg-list .msg-item .who{font-weight:600}
.msg-list .msg-item .sub{color:var(--muted);font-size:.88rem}
.msg-list .msg-item .when{color:var(--muted);font-size:.82rem;white-space:nowrap}

.detail-list{list-style:none;padding:0;margin:0}
.detail-list li{display:flex;gap:1rem;padding:.9rem 0;border-bottom:1px solid var(--line)}
.detail-list li:last-child{border:0}
.detail-list .k{width:120px;color:var(--muted);font-weight:600;flex-shrink:0}
.detail-list .v{flex:1;word-break:break-word}

.side-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:45}
.side-backdrop.show{display:block}

@media(max-width:1100px){.stat-row{grid-template-columns:repeat(2,1fr)}.form-grid{grid-template-columns:1fr}}
@media(max-width:768px){
  .admin-sidebar{transform:translateX(-100%)}
  .admin-sidebar.open{transform:translateX(0)}
  .admin-main{margin-left:0}
  .side-toggle{display:block}
  .table-k{display:block;overflow-x:auto;white-space:nowrap}
}
@media(max-width:520px){.stat-row{grid-template-columns:1fr}}