:root{
  --bg:#f4f6fb;
  --panel:#ffffff;
  --ink:#1f2433;
  --ink-soft:#5b6178;
  --border:#e3e7f1;
  --primary:#5b5bf0;
  --primary-dark:#4646d6;
  --primary-soft:#eeeeff;
  --accent:#22b8a0;
  --danger:#e85c5c;
  --warn:#eeac2b;
  --seat-empty:#f0f2f8;
  --seat-empty-border:#c7cce0;
  --radius:12px;
  --shadow:0 2px 10px rgba(30,34,60,.06), 0 1px 2px rgba(30,34,60,.04);
  --shadow-lg:0 12px 40px rgba(30,34,60,.18);
}
*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  font-family:"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
}
button{
  font-family:inherit;
  cursor:pointer;
}
input,select,textarea{
  font-family:inherit;
  font-size:14px;
}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:#d4d8e6;border-radius:8px;}
::-webkit-scrollbar-track{background:transparent;}

/* ---------- Layout shell ---------- */
#app{
  display:flex;
  flex-direction:column;
  height:100vh;
  overflow:hidden;
}

/* ---------- Header ---------- */
header{
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px 18px;
  background:var(--panel);
  border-bottom:1px solid var(--border);
  flex-wrap:wrap;
  z-index:20;
}
.back-home{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--ink-soft);
  text-decoration:none;
  font-size:13px;
  font-weight:700;
  padding:7px 10px;
  border-radius:8px;
  flex-shrink:0;
}
.back-home:hover{background:var(--bg);color:var(--ink);}
.brand{
  display:flex;
  align-items:center;
  gap:8px;
  font-weight:800;
  font-size:17px;
  letter-spacing:-.02em;
  white-space:nowrap;
  color:var(--ink);
  text-decoration:none;
}
.brand .logo-dot{
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;
}
.event-meta{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
}
.event-meta input[type=text]{
  border:1px solid transparent;
  background:transparent;
  font-weight:600;
  font-size:15px;
  padding:6px 8px;
  border-radius:8px;
  color:var(--ink);
  min-width:120px;
}
.event-meta input[type=text]:hover,.event-meta input[type=text]:focus{
  border-color:var(--border);
  background:var(--bg);
  outline:none;
}
.badge{
  font-size:11px;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.04em;
  background:var(--primary-soft);
  color:var(--primary-dark);
  padding:4px 9px;
  border-radius:999px;
  white-space:nowrap;
}
.header-actions{
  margin-left:auto;
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  border:1px solid var(--border);
  background:var(--panel);
  color:var(--ink);
  padding:8px 13px;
  border-radius:9px;
  font-size:13.5px;
  font-weight:600;
  transition:.15s;
  white-space:nowrap;
}
.btn:hover{background:var(--bg);border-color:#cfd5e6;}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff;}
.btn.primary:hover{background:var(--primary-dark);}
.btn.accent{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn.accent:hover{filter:brightness(.94);}
.btn.ghost{background:transparent;border-color:transparent;}
.btn.ghost:hover{background:var(--bg);}
.btn.danger{color:var(--danger);}
.btn.danger:hover{background:#fdeceb;}
.btn.small{padding:5px 9px;font-size:12.5px;border-radius:7px;}
.btn:disabled{opacity:.45;cursor:not-allowed;}
.icon-btn{
  width:30px;height:30px;border-radius:7px;border:1px solid var(--border);
  background:var(--panel);display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--ink-soft);
}
.icon-btn:hover{background:var(--bg);color:var(--ink);}

/* ---------- Main body ---------- */
#main{
  flex:1;
  display:flex;
  min-height:0;
}
aside{
  background:var(--panel);
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
  min-height:0;
}
#left-panel{width:300px;flex-shrink:0;}
#right-panel{width:280px;flex-shrink:0;border-right:none;border-left:1px solid var(--border);}

.panel-section{
  padding:14px 16px;
  border-bottom:1px solid var(--border);
}
.panel-section.grow{
  flex:1;
  overflow-y:auto;
  min-height:0;
}
.panel-title{
  font-size:12px;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:.05em;
  color:var(--ink-soft);
  margin:0 0 10px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.stat-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:8px;
}
.stat-box{
  background:var(--bg);
  border-radius:9px;
  padding:9px 10px;
  text-align:left;
}
.stat-box .num{font-size:19px;font-weight:800;line-height:1.1;}
.stat-box .lbl{font-size:11px;color:var(--ink-soft);font-weight:600;}
.stat-box.warn .num{color:var(--danger);}

/* Guest add form */
.field-row{display:flex;gap:6px;margin-bottom:8px;}
.field-row input, .field-row select{
  flex:1;
  padding:8px 9px;
  border:1px solid var(--border);
  border-radius:8px;
  min-width:0;
}
.field-row input:focus, .field-row select:focus, textarea:focus{
  outline:2px solid var(--primary-soft);
  border-color:var(--primary);
}
textarea#bulkNames{
  width:100%;
  min-height:56px;
  padding:8px 9px;
  border:1px solid var(--border);
  border-radius:8px;
  resize:vertical;
  margin-bottom:6px;
}
.search-wrap{position:relative;margin-bottom:10px;}
.search-wrap input{
  width:100%;
  padding:8px 10px 8px 30px;
  border:1px solid var(--border);
  border-radius:8px;
}
.search-wrap::before{
  content:"🔍";
  position:absolute;left:9px;top:50%;transform:translateY(-50%);
  font-size:12px;opacity:.55;
}

.guest-group-label{
  font-size:11.5px;
  font-weight:700;
  color:var(--ink-soft);
  margin:14px 0 6px;
  display:flex;
  align-items:center;
  gap:6px;
}
.guest-group-label .count{
  background:var(--bg);
  padding:1px 7px;
  border-radius:999px;
  font-weight:700;
}
.guest-list{list-style:none;margin:0;padding:0;}
.guest-chip{
  display:flex;
  align-items:center;
  gap:8px;
  padding:7px 8px;
  border-radius:8px;
  margin-bottom:4px;
  cursor:pointer;
  border:1px solid transparent;
  transition:.12s;
  font-size:13.5px;
}
.guest-chip:hover{background:var(--bg);}
.guest-chip.armed{
  background:var(--primary-soft);
  border-color:var(--primary);
}
.guest-chip.seated{opacity:.6;}
.guest-chip .dot{
  width:9px;height:9px;border-radius:50%;flex-shrink:0;background:var(--ink-soft);
}
.guest-chip .gname{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.guest-chip .gwhere{font-size:11px;color:var(--ink-soft);flex-shrink:0;}
.guest-chip .gx{
  opacity:0;
  color:var(--ink-soft);
  font-size:13px;
  width:18px;height:18px;
  border-radius:5px;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.guest-chip:hover .gx{opacity:1;}
.guest-chip .gx:hover{background:#fde3e3;color:var(--danger);}
.empty-hint{
  font-size:12.5px;
  color:var(--ink-soft);
  text-align:center;
  padding:16px 8px;
  line-height:1.5;
}

.armed-banner{
  display:none;
  align-items:center;
  gap:8px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  border:1px solid var(--primary);
  padding:8px 10px;
  border-radius:9px;
  font-size:12.5px;
  font-weight:600;
  margin-bottom:10px;
}
.armed-banner.show{display:flex;}
.armed-banner button{
  margin-left:auto;
  background:none;border:none;color:var(--primary-dark);
  font-weight:700;font-size:12px;text-decoration:underline;
}

/* ---------- Toolbar ---------- */
#toolbar{
  display:flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  background:var(--panel);
  border-bottom:1px solid var(--border);
  flex-wrap:wrap;
}
#toolbar .sep{width:1px;align-self:stretch;background:var(--border);margin:0 4px;}
#toolbar .spacer{flex:1;}
#zoomLabel{font-size:12.5px;color:var(--ink-soft);min-width:38px;text-align:center;}

/* ---------- Canvas ---------- */
#canvas-wrap{
  flex:1;
  overflow:auto;
  background:
    radial-gradient(circle,#dfe3f0 1px,transparent 1px);
  background-size:22px 22px;
  position:relative;
}
#canvas{
  position:relative;
  width:2200px;
  height:1500px;
  transform-origin:0 0;
}
.empty-canvas-hint{
  position:absolute;
  top:40px;left:40px;
  max-width:420px;
  background:var(--panel);
  border:1px dashed #c7cce0;
  border-radius:var(--radius);
  padding:22px 24px;
  box-shadow:var(--shadow);
}
.empty-canvas-hint h3{margin:0 0 6px;font-size:16px;}
.empty-canvas-hint p{margin:0 0 12px;font-size:13.5px;color:var(--ink-soft);line-height:1.5;}

/* ---------- Tables ---------- */
.table-wrap{
  position:absolute;
  cursor:grab;
  user-select:none;
  touch-action:none;
}
.table-wrap.dragging{cursor:grabbing;z-index:50;}
.table-wrap.selected .table-core{
  box-shadow:0 0 0 3px var(--primary), var(--shadow);
}
.table-core{
  position:absolute;
  background:linear-gradient(180deg,#fff,#f7f8fd);
  border:1px solid #d7dbec;
  box-shadow:var(--shadow);
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:2px;
}
.table-core.round{border-radius:50%;}
.table-core.rect{border-radius:12px;}
.table-label{
  font-size:12.5px;
  font-weight:800;
  text-align:center;
  padding:0 8px;
  color:var(--ink);
  max-width:100%;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.table-sub{font-size:10.5px;color:var(--ink-soft);font-weight:600;}

.seat{
  position:absolute;
  width:34px;height:34px;
  border-radius:9px;
  background:var(--seat-empty);
  border:1.5px dashed var(--seat-empty-border);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:11px;
  font-weight:700;
  color:#9aa0b8;
  transform:translate(-50%,-50%);
  transition:.12s;
  z-index:2;
}
.seat:hover{border-color:var(--primary);color:var(--primary);transform:translate(-50%,-50%) scale(1.08);}
.seat.filled{
  border-style:solid;
  color:#fff;
  background:var(--ink-soft);
}
.seat.filled:hover{filter:brightness(1.08);transform:translate(-50%,-50%) scale(1.08);}
.seat.can-place{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(34,184,160,.18);
}
.seat.highlight{
  animation:pulse 1.1s ease-in-out 3;
  z-index:5;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(91,91,240,.55);}
  50%{box-shadow:0 0 0 9px rgba(91,91,240,0);}
}

/* Row-shape table */
.table-row-shape{
  position:absolute;
  display:flex;
  align-items:center;
  gap:14px;
}
.row-label-tag{
  font-size:12px;
  font-weight:800;
  background:var(--ink);
  color:#fff;
  padding:6px 10px;
  border-radius:8px;
  white-space:nowrap;
  box-shadow:var(--shadow);
}
.row-seats{
  display:flex;
  gap:8px;
  background:var(--panel);
  border:1px solid #d7dbec;
  border-radius:10px;
  padding:8px 10px;
  box-shadow:var(--shadow);
}
.row-seats .seat{position:static;transform:none;}
.row-seats .seat:hover{transform:scale(1.08);}
.row-seats .seat.filled:hover{transform:scale(1.08);}

.table-controls{
  position:absolute;
  top:-14px;right:-10px;
  display:none;
  gap:4px;
  z-index:10;
}
.table-wrap:hover .table-controls, .table-wrap.selected .table-controls{display:flex;}
.tc-btn{
  width:24px;height:24px;
  border-radius:50%;
  border:1px solid var(--border);
  background:#fff;
  box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;
  color:var(--ink-soft);
}
.tc-btn:hover{color:var(--danger);}
.tc-btn.dup:hover{color:var(--primary);}

/* ---------- Right panel: properties / legend ---------- */
.prop-field{margin-bottom:12px;}
.prop-field label{
  display:block;
  font-size:11.5px;
  font-weight:700;
  color:var(--ink-soft);
  margin-bottom:5px;
}
.prop-field input[type=text]{
  width:100%;
  padding:8px 9px;
  border:1px solid var(--border);
  border-radius:8px;
}
.stepper{
  display:flex;
  align-items:center;
  gap:8px;
}
.stepper button{
  width:30px;height:30px;
  border-radius:8px;
  border:1px solid var(--border);
  background:var(--bg);
  font-weight:800;
  font-size:15px;
  color:var(--ink);
}
.stepper button:hover{background:var(--primary-soft);color:var(--primary-dark);}
.stepper .val{
  flex:1;text-align:center;font-weight:800;font-size:16px;
}
.shape-pick{display:flex;gap:6px;}
.shape-pick button{
  flex:1;
  padding:8px 4px;
  border-radius:8px;
  border:1px solid var(--border);
  background:var(--bg);
  font-size:11.5px;
  font-weight:700;
  color:var(--ink-soft);
}
.shape-pick button.active{
  background:var(--primary-soft);
  border-color:var(--primary);
  color:var(--primary-dark);
}
.legend-item{display:flex;align-items:center;gap:8px;font-size:13px;margin-bottom:8px;color:var(--ink-soft);}
.legend-swatch{width:16px;height:16px;border-radius:5px;flex-shrink:0;}
.legend-swatch.empty{background:var(--seat-empty);border:1.5px dashed var(--seat-empty-border);}
.legend-swatch.filled{background:var(--ink-soft);}
.tip{
  font-size:12.5px;
  color:var(--ink-soft);
  line-height:1.6;
  background:var(--bg);
  padding:10px 11px;
  border-radius:9px;
  margin-bottom:8px;
}
.tip b{color:var(--ink);}

/* ---------- Modal ---------- */
.modal-overlay{
  position:fixed;inset:0;
  background:rgba(20,22,36,.5);
  display:none;
  align-items:center;justify-content:center;
  z-index:200;
  padding:20px;
}
.modal-overlay.show{display:flex;}
.modal{
  background:var(--panel);
  border-radius:16px;
  width:100%;
  max-width:460px;
  max-height:88vh;
  overflow-y:auto;
  box-shadow:var(--shadow-lg);
  padding:26px;
}
.modal h2{margin:0 0 4px;font-size:20px;}
.modal .sub{color:var(--ink-soft);font-size:13.5px;margin:0 0 18px;}
.type-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:8px;
  margin-bottom:16px;
}
.type-card{
  border:1.5px solid var(--border);
  border-radius:10px;
  padding:12px 10px;
  text-align:left;
  background:var(--panel);
}
.type-card .ti{font-size:19px;}
.type-card .tn{font-weight:700;font-size:13px;margin-top:4px;}
.type-card .td{font-size:11px;color:var(--ink-soft);margin-top:2px;line-height:1.4;}
.type-card.active{border-color:var(--primary);background:var(--primary-soft);}
.modal label.f{
  display:block;font-size:12.5px;font-weight:700;color:var(--ink-soft);
  margin:12px 0 5px;
}
.modal input[type=text], .modal input[type=number]{
  width:100%;padding:9px 10px;border:1px solid var(--border);border-radius:9px;
}
.num-pair{display:flex;gap:10px;}
.num-pair > div{flex:1;}
.modal-actions{
  display:flex;
  gap:8px;
  margin-top:20px;
}
.modal-actions .btn{flex:1;justify-content:center;padding:11px;}

#importFileInput{display:none;}

/* ---------- Toast ---------- */
#toast{
  position:fixed;
  bottom:20px;left:50%;
  transform:translateX(-50%) translateY(20px);
  background:var(--ink);
  color:#fff;
  padding:10px 18px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  box-shadow:var(--shadow-lg);
  opacity:0;
  pointer-events:none;
  transition:.25s;
  z-index:300;
  white-space:nowrap;
}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  #left-panel{width:230px;}
  #right-panel{width:210px;}
  .type-grid{grid-template-columns:1fr;}
}
@media (max-width:680px){
  #main{flex-direction:column;}
  aside{width:100% !important;border:none;border-bottom:1px solid var(--border);max-height:34vh;}
  #right-panel{order:3;}
  #canvas-wrap{order:2;}
  .back-home span.label{display:none;}
}

/* ---------- Print ---------- */
@media print{
  header, #toolbar, #left-panel, #right-panel, .table-controls, #toast, .modal-overlay{display:none !important;}
  #main, #canvas-wrap{overflow:visible !important;height:auto !important;}
  body{background:#fff;}
  #canvas{width:auto !important;height:auto !important;transform:none !important;}
  .print-title{display:block !important;}
}
.print-title{display:none;padding:14px 20px;font-size:20px;font-weight:800;}