:root{
  --primary:#2f87b8;
  --primary-dark:#286f96;
  --secondary:#14a44d;
  --danger:#d9534f;
  --muted:#64748b;
  --bg:#e7ebef;
  --card:#ffffff;
  --border:#cfd7df;
  --radius-xs:2px;
  --radius-sm:3px;
  --radius-md:5px;
}

*{box-sizing:border-box}
body{font-family:"Segoe UI",Tahoma,Arial,sans-serif;margin:0;background:var(--bg);color:#1f2937}

.admin-shell{display:flex;min-height:100vh;background:var(--bg)}
.main-area{flex:1;min-width:0}

.sidebar{width:275px;flex:0 0 275px;color:#cfdae6;background:linear-gradient(180deg,#1f2e3c 0%,#172432 100%);border-right:1px solid #2a3b4b;padding:10px 9px;overflow:auto}
.brand{display:block;padding:8px 8px 12px;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:10px}
.brand-wide{display:block;width:100%;height:62px;object-fit:cover;object-position:center;border-radius:0;border:0;background:transparent}
.brand-square{display:none;width:50px;height:50px;object-fit:cover;object-position:center;border-radius:0;border:0;background:transparent}
.menu-header{font-size:13px;color:#90a7bb;margin:8px 6px 10px;letter-spacing:.08em}
.menu-group{background:rgba(255,255,255,.02);border:1px solid #304658;border-radius:2px;margin-bottom:9px;padding:8px}
.menu-title{display:flex;align-items:center;gap:8px;font-size:15px;color:#e5f0f8;font-weight:500;margin:0 0 6px}
.menu-title i{color:#99df65}
.menu-link{width:100%;text-decoration:none;border:1px solid #2e4355;background:rgba(255,255,255,.02);color:#dce7f2;padding:10px 10px;border-radius:2px;margin:2px 0;cursor:pointer;display:flex;align-items:center;gap:10px;font-size:14px;font-weight:400;transition:background .15s ease,border-color .15s ease}
.menu-link i{width:16px;text-align:center;color:#9eb8cc}
.menu-link:hover{background:rgba(255,255,255,.06);border-color:#3f586d}
.menu-link.active{background:#2f87b8;border-color:#5ea9d3;color:#fff}
.menu-link.active i{color:#fff}

.sidebar-backdrop{display:none}
body.sidebar-collapsed .sidebar{width:72px;flex-basis:72px;padding-left:6px;padding-right:6px}
body.sidebar-collapsed .brand{display:flex;justify-content:center}
body.sidebar-collapsed .brand-wide{display:none}
body.sidebar-collapsed .brand-square{display:block}
body.sidebar-collapsed .menu-header,
body.sidebar-collapsed .menu-title span,
body.sidebar-collapsed .menu-link span{display:none}
body.sidebar-collapsed .menu-title{justify-content:center}
body.sidebar-collapsed .menu-link{justify-content:center}

.topbar{display:flex;align-items:center;justify-content:space-between;background:linear-gradient(90deg,var(--primary) 0%,#3992c4 55%,#46a1d2 100%);border-bottom:1px solid var(--primary-dark);padding:9px 14px;position:sticky;top:0;z-index:8;color:#fff}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0}
.topbar h1{font-size:20px;margin:0;color:#fff;letter-spacing:.2px;font-weight:600}
.topbar .sub{font-size:13px;color:#d6eaf7;margin-top:1px}
.icon-btn{width:38px;height:38px;border:1px solid rgba(255,255,255,.4);background:rgba(255,255,255,.14);color:#fff;border-radius:2px;cursor:pointer}
.icon-btn:hover{background:rgba(255,255,255,.24)}

.container{max-width:none;margin:0 auto;padding:14px 16px;display:flex;flex-direction:column;gap:12px}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:0 10px 24px rgba(15,23,42,.06)}
.card header{padding:10px 12px;border-bottom:1px solid var(--border);background:#f8fafc}
.card header h2{margin:0;font-size:18px;color:#1e3347}
.card .content{padding:12px}

.intro-card{border-color:#d8e2ec;background:linear-gradient(135deg,#ffffff 0%,#f8fbff 65%,#eef5ff 100%)}
.intro-content{display:flex;align-items:center;justify-content:space-between;gap:10px}
.intro-content h2{margin:0;font-size:21px;color:#1f3246}
.intro-content p{margin:6px 0 0;color:#60768d;font-size:14px}

.generator-grid{display:grid;grid-template-columns:minmax(360px,.95fr) minmax(360px,1.05fr);gap:12px}

label{display:block;font-size:13px;color:#334155;margin:8px 0 6px;font-weight:600}
h3{margin:2px 0 8px;font-size:16px;color:#21384d}

input[type="text"],
input[type="number"],
select{width:100%;padding:9px 10px;border:1px solid var(--border);border-radius:var(--radius-xs);outline:0;background:#fff;transition:border .15s ease,box-shadow .15s ease}
input:focus,
select:focus{border-color:#94a3b8;box-shadow:0 0 0 2px rgba(148,163,184,.18)}

input[type="range"]{width:100%;accent-color:#2f87b8}

.input-row{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center}
.field-grid{display:grid;gap:10px}
.field-grid.two{grid-template-columns:1fr 1fr}
.field-grid.one{grid-template-columns:1fr}
.field-note{font-size:12px;color:#60768d;margin-top:3px}

.color-field .color-wrap{display:grid;grid-template-columns:52px 1fr;gap:8px}
.color-wrap input[type="color"]{width:52px;height:38px;padding:0;border:1px solid var(--border);border-radius:var(--radius-xs);background:#fff;cursor:pointer}
.color-wrap input.invalid{border-color:#c42f2f;background:#fff6f6}

.logo-tools{display:flex;gap:8px;flex-wrap:wrap}
.hidden-file{display:none}
.file-name{font-size:12px;color:#60768d;margin-top:7px;min-height:17px}

.preview-content{display:flex;flex-direction:column;gap:11px}
.preview-toolbar{display:flex;gap:8px;flex-wrap:wrap}
.preview-stage{border:1px solid #d8e3ee;border-radius:var(--radius-sm);padding:14px;background:linear-gradient(135deg,#f8fbff 0%,#f3f7fc 100%);display:grid;place-items:center;min-height:440px}
.qr-preview-wrap{min-height:360px;display:grid;place-items:center;width:100%}
.qr-preview-wrap canvas,
.qr-preview-wrap svg{max-width:min(100%,540px)!important;height:auto!important;border-radius:2px;box-shadow:0 8px 18px rgba(15,23,42,.12);background:#fff}

.meta-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.meta-grid article{border:1px solid #dbe6f0;background:#f8fbff;border-radius:4px;padding:8px 10px;display:flex;flex-direction:column;gap:4px;min-width:0}
.meta-grid span{font-size:12px;color:#5f7387}
.meta-grid strong{font-size:14px;color:#1f3246;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.tip-box{display:grid;grid-template-columns:auto 1fr;gap:8px;align-items:flex-start;border:1px solid #cfe4ff;background:#edf5ff;border-radius:4px;padding:9px 10px;color:#285a89}
.tip-box i{margin-top:2px}
.tip-box p{margin:0;font-size:13px}

.divider{height:1px;background:var(--border);margin:12px 0}

.btn{display:inline-flex;align-items:center;gap:8px;border:0;cursor:pointer;border-radius:var(--radius-xs);padding:9px 12px;font-weight:600;transition:opacity .15s ease;text-decoration:none}
.btn:hover{opacity:.92}
.btn.primary{background:var(--primary);color:#fff}
.btn.secondary{background:var(--secondary);color:#fff}
.btn.ghost{background:#fff;border:1px solid var(--border);color:#111827}
.btn.topbtn{color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.35)}
.btn.topbtn.alt{background:rgba(255,255,255,.2)}
.btn.topbtn.danger{background:var(--danger);border-color:#c94743}
.toolbar{display:flex;gap:8px;flex-wrap:wrap}

.toast{position:fixed;bottom:20px;right:20px;background:#1f2937;color:#fff;padding:11px 14px;border-radius:var(--radius-xs);opacity:0;transform:translateY(8px);transition:all .25s ease;z-index:50}
.toast.show{opacity:1;transform:translateY(0)}

@media (max-width:1200px){
  .generator-grid{grid-template-columns:1fr}
  .preview-stage{min-height:400px}
}

@media (max-width:980px){
  .admin-shell{display:block}
  .sidebar{
    position:fixed;
    left:-290px;
    top:0;
    width:275px;
    max-height:none;
    height:100dvh;
    z-index:30;
    transition:left .2s ease;
  }
  body.mobile-menu-open .sidebar{left:0}
  .sidebar-backdrop{display:none;position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:25}
  body.mobile-menu-open .sidebar-backdrop{display:block}
  body.mobile-menu-open{overflow:hidden}
  body.sidebar-collapsed .sidebar{width:275px;flex-basis:275px;padding-left:9px;padding-right:9px}
  body.sidebar-collapsed .menu-header,
  body.sidebar-collapsed .menu-title span,
  body.sidebar-collapsed .menu-link span{display:initial}

  .topbar{height:auto;flex-direction:column;align-items:stretch;gap:8px}
  .topbar-left{justify-content:flex-start}
  .toolbar{justify-content:flex-start}

  .field-grid.two{grid-template-columns:1fr}
  .meta-grid{grid-template-columns:1fr}
  .preview-stage{min-height:360px;padding:10px}
}

@media (max-width:620px){
  .topbar{padding:8px 10px}
  .topbar-left{width:100%}
  .toolbar{width:100%}
  .toolbar .btn{flex:1;min-width:120px;justify-content:center}

  .container{padding:10px}
  .intro-content{flex-direction:column;align-items:flex-start}
  .input-row{grid-template-columns:1fr}
  .preview-toolbar .btn{flex:1;justify-content:center}
  .preview-stage{min-height:320px}
  .qr-preview-wrap{min-height:300px}
}

/* Sidebar brand logo should stay fully transparent on all admin pages */
.brand-media,.brand-media img,.brand-wide,.brand-square{
  background:transparent !important;
  border-color:transparent !important;
  box-shadow:none !important;
}