:root{
  --cream:#FAF3E6;
  --paper:#FFFCF6;
  --chocolate:#3B2415;
  --espresso:#241207;
  --ink:#2E1D12;
  --gold:#AD8748;
  --gold-line:rgba(173,135,72,0.3);
  --muted:#9a8467;
  --danger:#a8412d;
  --success:#3d6b2f;
  --radius:6px;
}
*{box-sizing:border-box;}
body{
  margin:0;font-family:'Jost',sans-serif;font-weight:300;background:var(--cream);color:var(--ink);
}
h1,h2{font-family:'Playfair Display',serif;color:var(--chocolate);margin:0;}
button{font-family:'Jost',sans-serif;cursor:pointer;}
input,select{font-family:'Jost',sans-serif;}
a{color:inherit;}

/* ---------- LOGIN ---------- */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;}
.login-card{
  background:var(--paper);border:1px solid var(--gold-line);border-radius:8px;
  padding:44px 40px;max-width:380px;width:100%;box-shadow:0 20px 50px rgba(36,18,7,0.1);text-align:center;
}
.login-logo{font-family:'Playfair Display',serif;font-weight:700;font-size:20px;letter-spacing:.1em;color:var(--chocolate);margin-bottom:6px;}
.login-logo span{display:block;font-size:11px;letter-spacing:.2em;color:var(--gold);font-weight:400;margin-top:2px;}
.login-card h1{font-size:24px;margin:18px 0 6px;}
.login-sub{color:var(--muted);font-size:14px;margin-bottom:26px;}
.login-card .field{text-align:left;margin-bottom:16px;}
.back-link{display:inline-block;margin-top:20px;font-size:13px;color:var(--muted);text-decoration:none;}
.back-link:hover{color:var(--gold);}

/* ---------- SHARED FORM ELEMENTS ---------- */
.field{margin-bottom:14px;}
.field label{display:block;font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border:1px solid var(--gold-line);border-radius:4px;background:var(--cream);
  font-size:14.5px;color:var(--ink);
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--gold);}
.field textarea{font-family:'Menlo',monospace;font-size:12.5px;min-height:280px;resize:vertical;}
.field textarea.plain-textarea{font-family:'Jost',sans-serif;font-size:14.5px;min-height:0;resize:vertical;}
.field small{display:block;color:var(--muted);font-size:11.5px;margin-top:5px;line-height:1.4;}
.form-intro{color:var(--muted);font-size:13px;line-height:1.5;margin:-8px 0 22px;}
.form-section-title{border-top:1px solid var(--gold-line);padding-top:18px;margin:22px 0 14px;font-family:'Playfair Display',serif;font-size:16px;color:var(--chocolate);}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 14px;}
.err{color:var(--danger);font-size:13px;margin:-6px 0 12px;display:none;}
.err.show{display:block;}
.ok-msg{color:var(--success);font-size:13px;margin:-6px 0 12px;display:none;}
.ok-msg.show{display:block;}
.btn-primary{
  background:var(--chocolate);color:var(--cream);border:none;padding:12px 22px;border-radius:4px;
  font-size:13.5px;letter-spacing:.04em;width:100%;
}
.btn-primary:hover{background:var(--espresso);}
.btn-primary:disabled{opacity:.6;cursor:default;}
.btn-outline{
  background:none;border:1px solid var(--gold-line);color:var(--chocolate);padding:10px 18px;border-radius:4px;
  font-size:13px;letter-spacing:.03em;text-decoration:none;display:inline-block;
}
.btn-outline:hover{border-color:var(--gold);}
.btn-small{
  background:none;border:1px solid var(--gold-line);color:var(--chocolate);padding:6px 12px;border-radius:4px;font-size:12px;
}
.btn-small:hover{border-color:var(--gold);}
.btn-small.danger{color:var(--danger);border-color:rgba(168,65,45,0.3);}

/* ---------- APP SHELL ---------- */
.app-shell{display:flex;min-height:100vh;}
.sidebar{
  width:220px;flex-shrink:0;background:var(--espresso);color:#d8c6ac;
  display:flex;flex-direction:column;padding:26px 0;position:sticky;top:0;height:100vh;
}
.sidebar-logo{font-family:'Playfair Display',serif;font-weight:700;font-size:18px;letter-spacing:.08em;color:var(--cream);padding:0 24px 24px;border-bottom:1px solid rgba(216,188,134,0.15);margin-bottom:10px;}
.sidebar-logo span{display:block;font-size:10.5px;letter-spacing:.2em;color:var(--gold);font-weight:400;margin-top:3px;}
.sidebar-nav{display:flex;flex-direction:column;flex:1;}
.nav-item{
  background:none;border:none;color:#c9b28c;text-align:left;padding:13px 24px;font-size:14px;letter-spacing:.02em;
}
.nav-item:hover{color:var(--cream);}
.nav-item.active{color:var(--cream);background:rgba(216,188,134,0.1);border-left:2px solid var(--gold);}
.sidebar-footer{padding:16px 24px 0;border-top:1px solid rgba(216,188,134,0.15);display:flex;flex-direction:column;gap:10px;}
.sidebar-link{background:none;border:none;color:#a68a63;font-size:12.5px;text-align:left;padding:0;text-decoration:none;}
.sidebar-link:hover{color:var(--gold-soft,#d8bc86);}

.main{flex:1;padding:36px 44px;max-width:1180px;}
.view{display:none;}
.view.active{display:block;}
.view-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px;flex-wrap:wrap;gap:12px;}

.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:34px;}
.stat-card{background:var(--paper);border:1px solid var(--gold-line);border-radius:var(--radius);padding:20px 22px;}
.stat-card .lbl{font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);margin-bottom:8px;}
.stat-card .val{font-family:'Playfair Display',serif;font-size:28px;color:var(--chocolate);}

.panel{background:var(--paper);border:1px solid var(--gold-line);border-radius:var(--radius);padding:24px;margin-bottom:20px;}
.panel h2{font-size:18px;margin-bottom:14px;}
.panel-actions{margin-top:10px;}
.hint{color:var(--muted);font-size:13px;margin-bottom:18px;}

.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px;}
.toolbar input,.toolbar select{padding:9px 12px;border:1px solid var(--gold-line);border-radius:4px;background:var(--paper);font-size:13px;}
.toolbar input{flex:1;min-width:200px;}

.table-wrap{overflow-x:auto;background:var(--paper);border:1px solid var(--gold-line);border-radius:var(--radius);}
table{width:100%;border-collapse:collapse;font-size:13px;min-width:760px;}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--gold-line);white-space:nowrap;}
th{font-size:10.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);background:var(--cream);}
tr:last-child td{border-bottom:none;}
.empty-row{text-align:center;color:var(--muted);padding:36px;white-space:normal;}
.status-pill{font-size:10.5px;padding:4px 10px;border-radius:20px;letter-spacing:.02em;}
.status-pill.Paid{background:#e4ecdf;color:var(--success);}
.status-pill.Refunded{background:#f4ded4;color:var(--danger);}
.status-pill.Cancelled{background:#eee;color:#777;}
.tag-pill{display:inline-block;background:rgba(173,135,72,0.14);color:var(--chocolate);font-size:10.5px;padding:3px 9px;border-radius:12px;margin:0 4px 4px 0;}

.book-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;}
.book-card{background:var(--paper);border:1px solid var(--gold-line);border-radius:var(--radius);padding:18px;}
.book-card h3{font-family:'Playfair Display',serif;font-size:18px;margin-bottom:4px;color:var(--chocolate);}
.book-card .meta{font-size:12px;color:var(--muted);margin-bottom:12px;}
.book-card .actions{display:flex;gap:8px;}

/* ---------- MODAL ---------- */
.overlay{position:fixed;inset:0;background:rgba(36,18,7,0.5);display:none;align-items:center;justify-content:center;padding:24px;z-index:200;}
.overlay.open{display:flex;}
.modal-box{background:var(--paper);border-radius:8px;max-width:560px;width:100%;max-height:88vh;overflow-y:auto;padding:32px;box-shadow:0 30px 70px rgba(0,0,0,.3);}
.modal-box h2{font-size:20px;margin-bottom:18px;}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px;}

@media (max-width:600px){
  .form-grid{grid-template-columns:1fr;}
  .modal-box{padding:24px 18px;}
}

@media (max-width:880px){
  .app-shell{flex-direction:column;}
  .sidebar{width:100%;height:auto;position:relative;flex-direction:row;align-items:center;padding:14px 16px;overflow-x:auto;}
  .sidebar-logo{display:none;}
  .sidebar-nav{flex-direction:row;flex:none;}
  .sidebar-footer{flex-direction:row;border:none;padding:0 0 0 16px;margin-left:auto;}
  .main{padding:22px 18px;}
  .stat-grid{grid-template-columns:1fr 1fr;}
}