/*══════ Trang quản trị Thư viện Sách ══════*/
:root{
  --bg:#f6f7f9; --panel:#fff; --line:#e5e7eb;
  --txt:#111827; --muted:#6b7280;
  --pri:#2563eb; --pri-h:#1d4ed8;
  --ok:#059669; --err:#dc2626; --warn:#d97706;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--txt);
  font:15px/1.55 Inter,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
a{color:var(--pri)}
code{background:#eef1f5;padding:1px 5px;border-radius:4px;font-size:13px}
.muted{color:var(--muted);font-size:13px}
.err{color:var(--err);font-size:13px}
.hint{color:var(--muted);font-size:13.5px;line-height:1.6}

/* ── header ── */
.adm-header{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 20px;background:#0f172a;color:#e2e8f0;
}
.adm-brand{display:flex;align-items:center;gap:14px}
.adm-brand strong{font-size:15.5px;color:#fff}
.back-link{color:#93c5fd;text-decoration:none;font-size:14px}
.back-link:hover{text-decoration:underline}
.adm-right{display:flex;align-items:center;gap:14px}
.user-box{display:flex;align-items:center;gap:8px;font-size:14px}
.user-box img{border-radius:50%;border:1px solid #334155}
.deploy{font-size:13px;padding:3px 9px;border-radius:20px;background:#1e293b;color:#94a3b8}
.deploy.working{background:#3b2f0b;color:#fcd34d}
.deploy.ok{background:#062e22;color:#6ee7b7}
.deploy.err{background:#3b0d0d;color:#fca5a5}
.scope-warn{
  margin:14px auto 0;max-width:1240px;padding:11px 16px;border-radius:10px;
  background:#fef3c7;border:1px solid #fde68a;color:#92400e;font-size:14px;line-height:1.6
}
.scope-warn a{color:#b45309;font-weight:600}

/* ── login ── */
.login-wrap{display:flex;align-items:flex-start;justify-content:center;padding:56px 16px}
.login-card{
  width:100%;max-width:560px;background:var(--panel);border:1px solid var(--line);
  border-radius:14px;padding:26px 28px;box-shadow:0 8px 28px rgba(15,23,42,.06)
}
.login-card h1{margin:0 0 10px;font-size:21px}
.login-card label,.modal label{display:block;margin:14px 0 5px;font-size:13px;font-weight:600;color:#374151}
.login-card input{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;
  font:14px/1.4 inherit;box-sizing:border-box
}
.login-card input:focus{outline:2px solid #bfdbfe;border-color:var(--pri)}
.help{margin-top:18px;font-size:14px}
.help summary{cursor:pointer;color:var(--pri);font-weight:600}
.help ol{margin:8px 0 0;padding-left:20px;color:#374151;line-height:1.7}

/* ── tabs ── */
.tabs{
  display:flex;align-items:center;gap:6px;flex-wrap:wrap;
  padding:12px 20px 0;background:var(--panel);border-bottom:1px solid var(--line)
}
.tab-btn{
  border:1px solid transparent;background:none;padding:9px 16px;border-radius:9px 9px 0 0;
  font:600 14.5px/1 inherit;cursor:pointer;color:#475569
}
.tab-btn:hover{background:#f1f5f9;color:#0f172a}
.tab-btn.active{background:var(--bg);border-color:var(--line);border-bottom-color:var(--bg);color:var(--pri)}
.tabs-right{margin-left:auto;display:flex;align-items:center;gap:10px;padding-bottom:8px}

.tab-panel{display:none;padding:20px}
.tab-panel.active{display:block}
.panel{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:20px 22px;max-width:1240px;margin:0 auto
}
.panel-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.panel-head h2{margin:0;font-size:18px}

/* ── nút / ô nhập ── */
.btn{
  display:inline-block;border:1px solid var(--line);background:#fff;color:#111827;
  padding:8px 14px;border-radius:8px;font:500 14px/1.2 inherit;cursor:pointer;
  text-decoration:none;transition:.15s
}
.btn:hover{background:#f8fafc;border-color:#cbd5e1}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.primary{background:var(--pri);border-color:var(--pri);color:#fff}
.btn.primary:hover{background:var(--pri-h)}
.btn.danger{color:var(--err);border-color:#fecaca}
.btn.danger:hover{background:#fef2f2}
.btn.tiny{padding:5px 9px;font-size:12.5px;border-radius:7px}
input[type=text],input[type=search],input[type=number],input[type=password],select{
  padding:8px 11px;border:1px solid var(--line);border-radius:8px;
  font:14px/1.4 inherit;background:#fff;color:var(--txt)
}
input:focus,select:focus{outline:2px solid #bfdbfe;border-color:var(--pri)}
.row-inline{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:12px 0}
.row-inline input[type=text]{min-width:280px;flex:1}
.spacer{flex:1}

/* ── bảng ── */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{
  text-align:left;padding:9px 10px;background:#f8fafc;color:#475569;
  font-size:12.5px;text-transform:uppercase;letter-spacing:.4px;
  border-bottom:1px solid var(--line)
}
.tbl td{padding:9px 10px;border-bottom:1px solid #f1f5f9;vertical-align:middle}
.tbl tr:hover td{background:#fafcff}
.tbl tr.sel td{background:#eff6ff}
.tbl input[type=text],.tbl input[type=search],.tbl input[type=number],.tbl select,.tbl input[type=checkbox]{
  width:100%;padding:6px 8px
}
.tbl td input[type=checkbox]{width:auto}
.b-title{font-weight:600;color:#0f172a}
.badge{
  display:inline-block;margin-right:5px;padding:1.5px 7px;border-radius:20px;
  background:#eef2f7;color:#475569;font-size:11.5px;font-weight:600
}
.badge.pdf{background:#fee2e2;color:#b91c1c}
.badge.ghost{background:#f1f5f9;color:#94a3b8;font-weight:500}
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.toolbar input[type=search]{min-width:260px}
.bulk{display:flex;gap:8px;align-items:center;background:#eff6ff;border:1px solid #dbeafe;
  padding:6px 10px;border-radius:9px;font-size:13.5px}
.load-more{display:flex;justify-content:center;margin-top:14px}

/* ── dropzone ── */
.dropzone{
  border:2px dashed #cbd5e1;border-radius:14px;background:#f8fafc;
  padding:34px 20px;text-align:center;cursor:pointer;transition:.15s
}
.dropzone:hover,.dropzone.over{border-color:var(--pri);background:#eff6ff}
.dz-icon{font-size:34px;margin-bottom:6px}

/* ── modal ── */
.modal-ov{
  position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:60;
  display:flex;align-items:center;justify-content:center;padding:16px
}
.modal{
  width:100%;max-width:480px;background:#fff;border-radius:14px;
  padding:20px 22px;box-shadow:0 22px 60px rgba(0,0,0,.28);
  animation:pop .16s ease-out
}
@keyframes pop{from{transform:scale(.96);opacity:0}to{transform:scale(1);opacity:1}}
.modal h3{margin:0 0 6px;font-size:17px}
.modal-body{font-size:14.5px}
.modal-body input,.modal-body select{width:100%;box-sizing:border-box}
.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:18px}

/* ── toast ── */
#toastWrap{position:fixed;right:18px;bottom:18px;z-index:80;display:flex;flex-direction:column;gap:9px}
.toast{
  background:#0f172a;color:#fff;padding:11px 16px;border-radius:10px;font-size:14px;
  opacity:0;transform:translateY(10px);transition:.28s;max-width:400px;
  box-shadow:0 10px 30px rgba(0,0,0,.25)
}
.toast.show{opacity:1;transform:none}
.toast.err{background:#7f1d1d}

@media (max-width:820px){
  .tbl th:nth-child(3),.tbl td:nth-child(3){display:none}
  .toolbar input[type=search]{min-width:0;flex:1}
}

/* ── tab giao diện ── */
.theme-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start}
@media (max-width:920px){.theme-grid{grid-template-columns:1fr}}
.theme-form label{display:block;margin:13px 0 5px;font-size:13.5px;font-weight:600;color:var(--muted)}
.theme-form input{width:100%}
.theme-form .row-inline input[type=text]{min-width:110px;max-width:130px;flex:none;margin:0}
input[type=color]{width:48px;height:38px;padding:2px;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer}
.accent-preview{padding:8px 15px;border-radius:8px;font-size:13.5px;font-weight:600}
.theme-preview h4{margin:0 0 10px;font-size:14px;color:var(--muted);font-weight:600}
.tp-head{display:flex;gap:12px;align-items:center;padding:14px;background:#fff;border:1px solid var(--line);border-radius:12px}
.tp-logo{width:44px;height:44px;flex:none;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:700;background:#c0392b;color:#fff}
.tp-title{font-weight:700;font-size:16px}
.tp-sub{font-size:12.5px;color:var(--muted)}
.tp-hero{margin-top:10px;padding:24px 18px;border-radius:12px;color:#fff;text-align:center;background:linear-gradient(135deg,#c0392b,#e74c3c)}
.tp-hero-title{font-size:22px;font-weight:700}
.tp-hero-desc{font-size:13.5px;opacity:.92;margin-top:6px}
.tp-btn{display:inline-block;margin-top:14px;padding:8px 16px;border-radius:20px;background:#c0392b;color:#fff;font-size:13.5px;font-weight:600}
.tp-footer{margin-top:10px;padding:12px;text-align:center;font-size:12.5px;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:12px}
.row-inline a.btn{display:inline-flex;align-items:center;text-decoration:none}