:root{
  --bg:#f3efe8;
  --bg-2:#e8e2d6;
  --card:#fffcf7;
  --ink:#2c2824;
  --muted:#7a7368;
  --line:#e6dfd4;
  --accent:#4c6b52;
  --accent-2:#3d5743;
  --accent-soft:#e4eee4;
  --accent-ink:#f7f4ee;
  --danger:#9b3d3d;
  --danger-soft:#f8e8e6;
  --ok:#3d6b4f;
  --warn:#9a6b2f;
  --shadow:0 1px 2px rgba(44,40,36,.05), 0 12px 32px rgba(44,40,36,.07);
  --shadow-sm:0 1px 2px rgba(44,40,36,.06);
  --radius:18px;
  --radius-sm:12px;
  --font:"Segoe UI", ui-sans-serif, system-ui, sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:15px/1.55 var(--font);
  background-image:radial-gradient(circle at 1px 1px, rgba(44,40,36,.05) 1px, transparent 0);
  background-size:22px 22px;
}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-2);text-decoration:underline}
.sp{flex:1}

/* ----- thanh trên ----- */
.topbar{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;gap:8px 18px;
  padding:8px 28px;
  background:rgba(255,252,247,.88);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.brand{display:inline-flex;align-items:center;text-decoration:none!important;color:inherit!important}
.brand-lockup{display:flex;flex-direction:column;justify-content:center;line-height:1;gap:1px}
.brand-mobi{
  display:block;height:18px;width:auto;
}
.brand-flip{
  font-family:"Fraunces", "Palatino Linotype", Palatino, serif;
  font-style:italic;font-weight:650;font-size:18px;
  letter-spacing:-.03em;color:var(--ink);line-height:1;
}
.nav{display:flex;gap:6px}
.nav-link{padding:7px 14px;border-radius:999px;color:var(--ink)!important;text-decoration:none!important;font-weight:600;font-size:13.5px}
.nav-link:hover,.nav-link.is-on{background:var(--accent-soft);color:var(--accent-2)!important}
.who{display:flex;flex-direction:column;align-items:flex-end;line-height:1.2;margin-left:8px}
.who-name{font-weight:600;font-size:13px}
.who-role{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}

.wrap{max-width:1120px;margin:28px auto 64px;padding:0 20px}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:0 0 20px}
.eyebrow{margin:0 0 4px;font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
h1{font-size:26px;letter-spacing:-.03em;margin:0 0 8px;font-weight:700}
h2{font-size:15px;margin:0 0 14px;font-weight:700;letter-spacing:-.02em}
h2.subhead{margin:22px 0 8px;padding-top:16px;border-top:1px solid var(--line);font-size:14px}
.lead{margin:0;color:var(--muted)}

.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 24px;
  margin-bottom:18px;
  box-shadow:var(--shadow-sm);
}
.card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:8px}

.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.grow{flex:1}
.stack{display:flex;flex-direction:column;gap:4px}

label{display:block;font-weight:650;margin:14px 0 6px;font-size:13px}
label.inline{display:flex;align-items:center;gap:8px;font-weight:550;margin:10px 0}
input[type=text],input[type=email],input[type=password],input[type=url],input[type=number],select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font:inherit;background:#fff;color:var(--ink);transition:border .15s, box-shadow .15s;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
textarea{min-height:78px;resize:vertical}
input[type=color]{width:42px;height:32px;padding:2px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}
input[type=file]{width:100%;padding:10px 12px;border:1px dashed #cfc6b8;border-radius:var(--radius-sm);background:#fff;font:inherit;color:var(--muted)}
input[type=range]{width:100%;accent-color:var(--accent);height:28px}
.bgm-now{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,#fff,var(--bg));margin:8px 0 12px}
.bgm-now audio{width:min(320px,100%);height:36px}
.logo-now{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,#fff,var(--bg));margin:8px 0 12px}
.logo-preview{height:40px;width:auto;max-width:180px;object-fit:contain;background:#2b2f36;border-radius:8px;padding:6px 10px}
.logo-pos{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:4px 0 12px}
.logo-pos-opt{display:flex;flex-direction:column;align-items:center;gap:6px;margin:0;padding:8px;border:1px solid var(--line);border-radius:14px;background:#fff;font-weight:600;font-size:12px;cursor:pointer}
.logo-pos-opt input{position:absolute;opacity:0;pointer-events:none}
.logo-pos-opt:has(input:checked){border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px var(--accent-soft)}
.logo-pos-mock{display:flex;align-items:center;gap:5px;width:100%;height:28px;padding:0 7px;border-radius:8px;background:#2b2f36}
.logo-pos-mock i{display:block;width:16px;height:10px;border-radius:2px;background:#3b82f6;flex:none}
.logo-pos-mock em{display:block;flex:1;height:3px;border-radius:99px;background:rgba(255,255,255,.35)}
.logo-pos-center{display:grid;grid-template-columns:1fr auto 1fr;align-items:center}
.logo-pos-center em{grid-column:1}
.logo-pos-center i{grid-column:2;justify-self:center}
.logo-pos-right{justify-content:space-between}
.logo-pos-right em{order:1}
.logo-pos-right i{order:2}

/* ----- nút cách điệu ----- */
button,.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);
  background:var(--card);color:var(--ink);font:inherit;font-weight:650;font-size:13.5px;
  cursor:pointer;text-decoration:none!important;letter-spacing:.01em;
  box-shadow:var(--shadow-sm);
  transition:transform .15s ease, box-shadow .15s ease, background .15s, border-color .15s, color .15s;
}
button:hover,.btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(44,40,36,.1);background:#fff}
button:active,.btn:active{transform:translateY(0)}
button.primary,.btn.primary{
  background:var(--accent);border-color:transparent;color:var(--accent-ink);
  box-shadow:0 1px 0 rgba(255,255,255,.18) inset, 0 8px 18px rgba(76,107,82,.28);
}
button.primary:hover,.btn.primary:hover{background:var(--accent-2);box-shadow:0 10px 22px rgba(76,107,82,.32)}
button.danger,.btn.danger{color:var(--danger);border-color:#ead2d0;background:var(--danger-soft);box-shadow:none}
button.danger:hover{background:#f3d6d3}
button.ghost,.btn.ghost{background:transparent;border-color:transparent;box-shadow:none;padding:8px 12px}
button.ghost:hover,.btn.ghost:hover{background:var(--accent-soft);box-shadow:none}
button:disabled{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none}

.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:11.5px;font-weight:700;letter-spacing:.02em;background:#ece7de;color:var(--ink)}
.badge.ready{background:#dcead9;color:#215334}
.badge.processing{background:#f7e6c8;color:#7a4e12}
.badge.failed{background:#f4d6d4;color:#7a2e2e}
.badge.public{background:var(--accent-soft);color:var(--accent-2)}
.badge.private{background:#ece7de;color:var(--muted)}
.badge.unlisted{background:#e4eaf1;color:#3d5368}

.muted{color:var(--muted)}.err{color:var(--danger);margin:8px 0}
.bar{height:7px;background:#ece7de;border-radius:999px;overflow:hidden;min-width:120px}
.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),#7a9a78);transition:width .3s}

.drop{
  border:1.5px dashed #cfc6b8;border-radius:var(--radius);padding:28px 20px;text-align:center;color:var(--muted);
  background:linear-gradient(180deg, rgba(255,252,247,.5), rgba(232,226,214,.35));
  transition:border-color .15s, background .15s;
}
.drop.over{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-2)}
.drop-title{font-weight:700;color:var(--ink);margin:0 0 6px}
.drop #pick{margin-top:2px;min-width:140px}
.drop #up{margin-top:14px}

.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.kpi{padding:16px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,#fff,var(--bg))}
.kpi b{display:block;font-size:26px;letter-spacing:-.03em;margin-bottom:2px}
code,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}
.copy{display:flex;gap:8px}.copy input{flex:1}

#toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,12px);
  background:var(--ink);color:#fff;padding:11px 18px;border-radius:999px;
  opacity:0;pointer-events:none;transition:.22s;z-index:50;max-width:90vw;
  box-shadow:0 10px 30px rgba(44,40,36,.25);font-weight:600;font-size:13.5px;
}
#toast.on{opacity:1;transform:translate(-50%,0)}

/* ----- đăng nhập ----- */
.login-screen{
  min-height:100%;display:grid;place-items:center;padding:32px 16px;
  background:
    radial-gradient(900px 420px at 10% -10%, #dfe8dc, transparent 55%),
    radial-gradient(700px 380px at 110% 110%, #e8dfd0, transparent 50%),
    var(--bg);
}
.login-card{width:min(400px,100%);background:var(--card);border:1px solid var(--line);border-radius:24px;padding:36px 32px;box-shadow:var(--shadow)}
.login-card h1{margin:22px 0 4px}
.login-card .lead{margin-bottom:20px}
.login-card .brand{display:flex;justify-content:center;margin-bottom:4px}
.login-card .brand-lockup{align-items:center;text-align:center;gap:4px}
.login-card .brand-mobi{height:38px}
.login-card .brand-flip{font-size:36px;letter-spacing:-.04em}

/* ----- lưới sách ----- */
.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.book-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .18s, box-shadow .18s;
}
.book-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.book-cover{position:relative;display:block;aspect-ratio:16/10;background:#e4ddd2;overflow:hidden}
.book-cover-img{width:100%;height:100%;object-fit:cover;display:block}
.book-cover-ph{width:100%;height:100%;display:grid;place-items:center;font-size:42px;font-weight:700;color:var(--accent);background:linear-gradient(145deg,var(--accent-soft),#f0e6d4)}
.book-qr{
  position:absolute;right:10px;bottom:10px;width:76px;height:76px;padding:5px;
  background:var(--card);border-radius:10px;box-shadow:0 6px 18px rgba(44,40,36,.18);
}
.book-qr svg{display:block;width:100%;height:100%}
.book-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:8px;flex:1}
.book-body h2{margin:0;font-size:16px;line-height:1.3}
.book-body h2 a{color:var(--ink)!important;text-decoration:none!important}
.book-body h2 a:hover{color:var(--accent)!important}
.book-meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.book-actions{display:flex;gap:8px;margin-top:auto;padding-top:6px}
.book-file{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.empty{text-align:center;padding:36px 16px;color:var(--muted)}
.empty b{display:block;color:var(--ink);font-size:16px;margin-bottom:6px}

/* ----- QR chi tiết ----- */
.share-grid{display:grid;grid-template-columns:1fr 220px;gap:24px;align-items:start}
.qr-panel{text-align:center;padding:16px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(180deg,#fff,var(--bg))}
.qr-frame{width:180px;height:180px;margin:0 auto 10px;padding:8px;background:#fff;border-radius:14px;border:1px solid var(--line)}
.qr-frame svg{width:100%;height:100%;display:block}
.qr-panel p{margin:0 0 12px;font-size:12.5px;color:var(--muted)}

table{width:100%;border-collapse:separate;border-spacing:0}
th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700}
td select,td input[type=password]{width:auto;min-width:140px}
tr:last-child td{border-bottom:0}

.spark{display:flex;align-items:flex-end;gap:3px;height:64px}
.spark i{flex:1;background:linear-gradient(180deg,#8eae8c,var(--accent));min-width:3px;border-radius:3px 3px 0 0}

.lib-search input[type=search]{margin:0}
.lib-hits{list-style:none;margin:12px 0 0;padding:0}
.lib-hits li{padding:10px 0;border-top:1px solid var(--line)}
.lib-hits li:first-child{border-top:0;padding-top:0}
.rcpt-form{margin:12px 0 18px}
.rcpt-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px}
.rcpt-table-wrap{overflow:auto}
.rcpt-table td,.rcpt-table th{vertical-align:top}
.rcpt-table tr.is-dead{opacity:.62}
.rcpt-actions{white-space:nowrap}
.hint{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:700}
.hint-none{background:var(--bg-2);color:var(--muted)}
.hint-reading{background:var(--accent-soft);color:var(--accent-2)}
.hint-call{background:#f6ead4;color:var(--warn)}
.hint-done{background:#e4f0e6;color:var(--ok)}

/* ----- editor ----- */
.editor{display:grid;grid-template-columns:130px 1fr 300px;gap:12px;height:calc(100vh - 118px);min-height:520px}
.ed-thumbs{overflow:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:8px}
.ed-thumb{display:block;width:100%;padding:3px;margin-bottom:8px;border:2px solid transparent;border-radius:8px;background:none;text-align:center;font-size:12px;cursor:pointer;box-shadow:none}
.ed-thumb img{width:100%;display:block;border-radius:4px;box-shadow:var(--shadow-sm)}
.ed-thumb.cur{border-color:var(--accent);background:var(--accent-soft)}
.ed-stage{overflow:auto;background:#ddd6c8;border:1px solid var(--line);border-radius:var(--radius-sm);display:flex;justify-content:center;padding:16px}
.ed-canvas{position:relative;flex:none;box-shadow:0 8px 28px rgba(44,40,36,.22);background:#fff;user-select:none;touch-action:none;cursor:crosshair}
.ed-canvas img{display:block;width:100%;height:auto;pointer-events:none}
.ed-el{position:absolute;border:2px solid var(--accent);background:rgba(76,107,82,.18);cursor:move;min-width:6px;min-height:6px}
.ed-el.sel{border-color:#c4882a;background:rgba(196,136,42,.22)}
.ed-el .tag{position:absolute;left:0;top:-18px;font-size:11px;background:var(--accent);color:#fff;padding:0 5px;border-radius:3px;white-space:nowrap;pointer-events:none}
.ed-el.sel .tag{background:#c4882a}
.ed-h{position:absolute;width:10px;height:10px;background:#fff;border:2px solid #c4882a;border-radius:2px}
.ed-panel{overflow:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px}
.ed-bar{display:flex;gap:8px;align-items:center;margin-bottom:12px;flex-wrap:wrap}
.ed-comments{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.ed-comments li{padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--bg)}
.ed-comments li.is-done{opacity:.65}

@media(max-width:900px){
  .topbar{padding:10px 14px;flex-wrap:wrap}
  .share-grid{grid-template-columns:1fr}
  .qr-panel{max-width:240px}
  .editor{grid-template-columns:1fr;height:auto}
  .ed-thumbs{display:flex;gap:8px;overflow:auto}
  .ed-thumb{width:70px;flex:none}
  .who{display:none}
}
@media(max-width:640px){
  .wrap{margin-top:16px}
  h1{font-size:22px}
  .book-grid{grid-template-columns:1fr}
  .rcpt-grid{grid-template-columns:1fr}
}