:root{
  --navy:#161C29;
  --navy-2:#1F2839;
  --slate:#4B5568;
  --paper:#F7F5F0;
  --paper-2:#EFEBE2;
  --gold:#C9A24B;
  --gold-2:#E4C77E;
  --ink:#1B1B1B;
  --red:#D62828;
  --green:#2F7D5C;
  --line:#D8D2C4;
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto, Arial, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{font-family:var(--font-body);background:var(--paper);color:var(--ink);}

/* ---------- LOGIN ---------- */
.login-wrap{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:
    radial-gradient(circle at 20% 20%, rgba(201,162,75,0.10), transparent 45%),
    radial-gradient(circle at 80% 80%, rgba(201,162,75,0.08), transparent 45%),
    var(--navy);
  padding:24px;
}
.login-card{
  width:100%;max-width:380px;background:var(--paper);border:1px solid var(--gold);
  outline:1px solid rgba(201,162,75,0.35);outline-offset:6px;border-radius:2px;
  padding:44px 36px 34px;position:relative;
}
.login-brand{text-align:center;margin-bottom:8px;}
.login-brand .mark{font-family:var(--font-display);font-size:28px;font-weight:700;letter-spacing:0.5px;color:var(--navy);}
.login-brand .mark span{color:var(--gold);}
.login-brand .sub{font-size:10.5px;letter-spacing:3px;text-transform:uppercase;color:var(--slate);margin-top:4px;}
.login-divider{width:40px;height:2px;background:var(--gold);margin:20px auto 24px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:11px;letter-spacing:1px;text-transform:uppercase;color:var(--slate);margin-bottom:6px;font-weight:600;}
.field input, .field textarea, .field select{
  width:100%;padding:11px 12px;border:1px solid var(--line);background:#fff;
  font-size:14px;font-family:var(--font-body);border-radius:2px;
}
.field input:focus, .field textarea:focus{outline:2px solid var(--gold);outline-offset:1px;border-color:var(--gold);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 18px;border:none;border-radius:2px;cursor:pointer;
  font-size:13px;font-weight:600;letter-spacing:0.5px;font-family:var(--font-body);text-decoration:none;
}
.btn:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}
.btn-primary{background:var(--navy);color:var(--paper);width:100%;padding:13px;}
.btn-primary:hover{background:var(--navy-2);}
.btn-gold{background:var(--gold);color:var(--navy);}
.btn-gold:hover{background:var(--gold-2);}
.btn-ghost{background:transparent;color:var(--navy);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--gold);}
.btn-danger{background:#fff;color:var(--red);border:1px solid var(--red);}
.login-note{margin-top:18px;font-size:11.5px;color:var(--slate);text-align:center;line-height:1.5;}
.login-error{background:#FBEAEA;border:1px solid var(--red);color:var(--red);font-size:12.5px;padding:8px 10px;border-radius:2px;margin-bottom:14px;}
.login-success{background:#E8F3EE;border:1px solid var(--green);color:var(--green);font-size:12.5px;padding:8px 10px;border-radius:2px;margin-bottom:14px;}
.login-hint{margin-top:14px;background:var(--paper-2);border:1px dashed var(--line);padding:10px 12px;font-size:11.5px;color:var(--slate);border-radius:2px;line-height:1.5;}

/* ---------- SHELL ---------- */
.shell{display:flex;min-height:100vh;background:var(--paper);}
.nav-toggle{
  display:none;position:fixed;top:12px;left:12px;z-index:40;
  background:var(--navy);color:var(--paper);border:1px solid var(--gold);border-radius:3px;
  padding:9px 14px;font-size:13px;font-weight:600;cursor:pointer;
}
.sidebar{width:250px;flex:0 0 250px;background:var(--navy);color:var(--paper);display:flex;flex-direction:column;}
.sidebar-brand{padding:26px 22px 18px;border-bottom:1px solid rgba(255,255,255,0.08);}
.sidebar-brand .mark{font-family:var(--font-display);font-size:21px;font-weight:700;color:var(--paper);}
.sidebar-brand .mark span{color:var(--gold);}
.sidebar-brand .sub{font-size:9.5px;letter-spacing:2.5px;text-transform:uppercase;color:#8A93A6;margin-top:3px;}
.sub-badge{
  display:block;margin:14px 22px 0;padding:8px 10px;border-radius:2px;font-size:11.5px;font-weight:600;
  text-decoration:none;text-align:center;
}
.sub-badge-off{background:rgba(214,40,40,0.18);color:#FF9C9C;border:1px solid rgba(214,40,40,0.5);}
.sub-badge-warn{background:rgba(201,162,75,0.16);color:var(--gold-2);border:1px solid rgba(201,162,75,0.5);}
.nav-label{font-size:10px;letter-spacing:2px;text-transform:uppercase;color:#6E7690;padding:18px 22px 8px;}
.nav-search{padding:0 22px 8px;position:relative;}
.nav-search input{
  box-sizing:border-box;-webkit-appearance:none;appearance:none;outline:none;
  width:100%;padding:8px 10px 8px 30px;border-radius:3px;border:1px solid rgba(255,255,255,0.18);
  background-color:rgba(255,255,255,0.07);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238A93A6' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:8px center;background-size:14px 14px;
  color:var(--paper);font-size:12.5px;font-family:var(--font-body);line-height:1.4;
}
.nav-search input::placeholder{color:#8A93A6;}
.nav-search input:focus{border-color:var(--gold);background-color:rgba(255,255,255,0.11);}
.nav-empty{padding:10px 22px;font-size:11.5px;color:#7B8296;}
.nav-list{list-style:none;margin:0;padding:0 12px;flex:1;overflow-y:auto;}
.nav-item{border-radius:2px;margin-bottom:3px;border:1px solid transparent;}
.nav-item a{display:flex;align-items:center;gap:10px;padding:10px;text-decoration:none;color:inherit;}
.nav-item:hover{background:rgba(255,255,255,0.05);}
.nav-item.active{background:rgba(201,162,75,0.14);border-color:rgba(201,162,75,0.5);}
.nav-plate{width:26px;height:26px;flex:0 0 26px;border:1px solid var(--gold);border-radius:2px;display:flex;align-items:center;justify-content:center;font-size:10.5px;color:var(--gold);font-family:var(--font-mono);}
.nav-item.inactive .nav-plate{border-color:#454E63;color:#454E63;}
.nav-texts{display:flex;flex-direction:column;overflow:hidden;}
.nav-texts .name{font-size:13px;font-weight:600;color:var(--paper);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.nav-item.inactive .nav-texts .name{color:#7B8296;}
.nav-texts .tag{font-size:10px;color:#8A93A6;}
.sidebar-foot{padding:16px 22px;border-top:1px solid rgba(255,255,255,0.08);font-size:12.5px;}
.sidebar-foot .user{color:#C7CCDA;margin-bottom:10px;}
.logout-link{font-size:12px;color:var(--gold);cursor:pointer;background:none;border:none;padding:0;font-family:var(--font-body);text-decoration:none;}
.logout-link:hover{text-decoration:underline;}

.main{flex:1;overflow-y:auto;min-width:0;}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:18px 30px;border-bottom:1px solid var(--line);background:#fff;flex-wrap:wrap;gap:10px;}
.topbar h1{font-family:var(--font-display);font-size:19px;margin:0;color:var(--navy);}
.topbar .crumbs{font-size:11.5px;color:var(--slate);margin-top:3px;}
.content{padding:28px 30px 60px;}

.list-search{margin-bottom:16px;max-width:340px;position:relative;}
.list-search input{
  box-sizing:border-box;-webkit-appearance:none;appearance:none;outline:none;
  width:100%;padding:10px 12px 10px 34px;border:1px solid var(--line);border-radius:3px;font-size:13.5px;
  background-color:#fff;font-family:var(--font-body);color:var(--ink);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23918A78' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:12px center;background-size:14px 14px;
}
.list-search input:focus{border-color:var(--gold);box-shadow:0 0 0 2px rgba(201,162,75,0.25);}

@media (max-width: 860px){
  .nav-toggle{display:block;}
  .shell{flex-direction:column;}
  .sidebar{
    width:100%;flex:none;position:fixed;top:0;left:-100%;height:100vh;z-index:35;
    transition:left .2s ease;overflow-y:auto;
  }
  .sidebar.open{left:0;}
  .main{margin-top:52px;}
  .content{padding:18px 16px 50px;}
  .topbar{padding:14px 16px;}
  .editor-actions .btn, .toolbar .btn{width:100%;}
  .toolbar{flex-direction:column;align-items:stretch;}
  .frow{flex-direction:column;gap:0;}
  table.invlist{font-size:12px;}
  .table-wrap{overflow-x:auto;}
}

.alert{padding:10px 14px;border-radius:2px;font-size:13px;margin-bottom:16px;}
.alert-success{background:#E8F3EE;border:1px solid var(--green);color:var(--green);}
.alert-error{background:#FBEAEA;border:1px solid var(--red);color:var(--red);}

/* dashboard grid */
.grid-books{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px;}
.book-card{background:#fff;border:1px solid var(--line);border-radius:3px;padding:16px;text-decoration:none;display:block;color:inherit;transition:border-color .15s;}
.book-card:hover{border-color:var(--gold);}
.book-card.locked{opacity:0.8;}
.book-card .plate{width:34px;height:34px;border:1px solid var(--gold);color:var(--gold);border-radius:2px;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:12px;margin-bottom:12px;}
.book-card .name{font-weight:700;font-size:14.5px;color:var(--navy);}
.book-card .meta{font-size:11.5px;color:var(--slate);margin-top:3px;}
.status-pill{display:inline-block;margin-top:10px;font-size:10px;letter-spacing:0.5px;text-transform:uppercase;padding:3px 8px;border-radius:20px;font-weight:700;}
.status-pill.on{background:#E8F3EE;color:var(--green);}
.status-pill.off{background:#F0EEE8;color:var(--slate);}

/* book detail */
.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;flex-wrap:wrap;gap:10px;}
.table-wrap{background:#fff;border:1px solid var(--line);border-radius:3px;overflow:hidden;}
table.invlist{width:100%;border-collapse:collapse;font-size:13px;}
table.invlist th{text-align:left;background:var(--paper-2);color:var(--slate);font-size:10.5px;text-transform:uppercase;letter-spacing:0.5px;padding:10px 14px;border-bottom:1px solid var(--line);}
table.invlist td{padding:11px 14px;border-bottom:1px solid var(--line);color:var(--ink);}
table.invlist tr:last-child td{border-bottom:none;}
table.invlist tr:hover td{background:#FBFAF7;}
table.invlist a{color:var(--navy);}
.empty-state{text-align:center;padding:60px 20px;color:var(--slate);}
.empty-state .big{font-family:var(--font-display);font-size:20px;color:var(--navy);margin-bottom:6px;}

/* editor split */
.editor-wrap{display:grid;grid-template-columns:400px 1fr;gap:22px;align-items:start;}
@media (max-width:1100px){.editor-wrap{grid-template-columns:1fr;}}
.panel{background:#fff;border:1px solid var(--line);border-radius:3px;padding:18px;}
.panel h3{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--slate);margin:0 0 14px;}
.frow{display:flex;gap:10px;}
.frow .field{flex:1;}
.item-block{border:1px solid var(--line);border-radius:2px;padding:12px;margin-bottom:10px;position:relative;}
.item-block .rm{position:absolute;top:8px;right:8px;font-size:11px;color:var(--red);cursor:pointer;background:none;border:none;}
.add-item-btn{width:100%;padding:10px;border:1px dashed var(--line);background:var(--paper-2);color:var(--slate);border-radius:2px;cursor:pointer;font-size:12.5px;font-weight:600;}
.add-item-btn:hover{border-color:var(--gold);color:var(--navy);}
.editor-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap;}
.inv-scale{background:#E9E5DA;padding:20px;border-radius:3px;overflow:auto;}
.checkbox-row{display:flex;align-items:center;gap:8px;margin-bottom:16px;}
.checkbox-row input{width:auto;}
.checkbox-row label{margin:0;text-transform:none;letter-spacing:0;font-size:13px;color:var(--ink);font-weight:400;}
fieldset{border:1px solid var(--line);border-radius:2px;padding:14px;margin-bottom:14px;}
legend{font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--slate);padding:0 6px;}

@media print{
  body *{visibility:hidden;}
  #printArea, #printArea *{visibility:visible;}
  #printArea{position:absolute;top:0;left:0;width:100%;}
  .inv-sheet{box-shadow:none;border:none;margin:0;}
  .inv-scale{padding:0;background:#fff;overflow:visible !important;}
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    color-adjust: exact !important;
  }
}

@media (max-width: 860px){
  .login-card{padding:34px 22px 26px;}
  .editor-wrap{grid-template-columns:1fr;}
  .inv-scale{padding:10px;}
}