:root{
  --bg: #0b1220;
  --panel: rgba(16, 24, 39, 0.72);
  --panelSolid: #0f172a;
  --border: rgba(148, 163, 184, 0.18);
  --text: #e5e7eb;
  --muted: rgba(226, 232, 240, 0.65);
  --muted2: rgba(226, 232, 240, 0.45);
  --primary: #4f46e5;
  --primary2: #6d28d9;
  --danger: #ef4444;
  --warn: #f59e0b;
  --ok: #22c55e;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}

html, body{
  height:100%;
}

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: linear-gradient(
                180deg,
                #5b4394 0%,
                #4b387f 30%,
                #2b2150 62%,
                #0b1220 100%
              );
  color: var(--text);
}

.app{
  min-height:100%;
  display:flex;
  flex-direction:column;
}

.app-footer{
  padding: 10px 14px 18px;
  display:flex;
  justify-content:flex-end;
  align-items:center;
  gap: 16px;
}

.topbar{
  padding: 16px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
}

.brand-title{
  font-weight:900;
  letter-spacing:0.2px;
  font-size: 24px;
  line-height: 1.1;
}
.brand-subtitle{
  color: var(--muted);
  font-size: 12px;
  margin-top:4px;
}
.brand{
  display:flex;
  align-items:center;
  gap: 0;
}

.brand-copy{
  display:flex;
  flex-direction:column;
}

.topbar-actions{
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
  align-items:center;
}

.powered-by-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 6px 8px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(2, 6, 23, 0.2);
  text-decoration:none;
}

.powered-by-link:hover{
  border-color: rgba(148, 163, 184, 0.35);
}

.powered-by-logo{
  height: 88px;
  width: auto;
  display:block;
  filter: brightness(0) invert(1);
}

.layout{
  display:grid;
  grid-template-columns: 320px 1fr 340px;
  gap: 14px;
  padding: 0 14px 18px;
}

@media (max-width: 1100px){
  .layout{
    grid-template-columns: 1fr;
  }
  .panel-left,.panel-right{
    order: 2;
  }
  .panel-center{
    order: 1;
  }
}

.panel{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow:hidden;
}

.panel-title{
  padding: 14px 14px 10px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  font-weight: 750;
  font-size: 13px;
}

.panel-left, .panel-right{
  padding: 0;
}

.panel-left{
  grid-column: 1;
}
.panel-center{
  grid-column: 2;
  display:flex;
  flex-direction:column;
  min-height: 620px;
}
.panel-right{
  grid-column: 3;
}

.panel-center .panel-title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
}

.form-grid, .stats-grid{
  padding: 12px 14px;
  display:grid;
  gap: 12px;
}

.stats-grid{
  grid-template-columns: 1fr 1fr;
}

.stat-card{
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 12px;
  padding: 10px 10px;
  background: rgba(15, 23, 42, 0.45);
}
.stat-label{
  color: var(--muted2);
  font-size: 12px;
}
.stat-value{
  margin-top: 4px;
  font-weight: 850;
  font-size: 16px;
}

.section-subtitle{
  margin: 10px 14px 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.form-grid .field{
  display:flex;
  flex-direction:column;
  gap: 6px;
}

.field .label{
  font-size: 12px;
  color: var(--muted);
  font-weight: 650;
}

input[type="text"], input[type="number"], select{
  background: rgba(2, 6, 23, 0.35);
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 12px;
  padding: 10px 10px;
  color: var(--text);
  outline: none;
}
input[type="text"]::placeholder{
  color: rgba(226, 232, 240, 0.35);
}
input[type="number"]{
  -moz-appearance: textfield;
}

select{
  cursor:pointer;
}

.form-grid .field-wide{
  grid-column: 1 / -1;
}

.form-grid{
  grid-template-columns: 1fr;
}

.form-grid .field-row{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
}

.form-grid .field-row .check{
  flex: 1 1 130px;
}

.check{
  display:flex;
  align-items:center;
  gap: 10px;
  color: var(--text);
  user-select:none;
  font-size: 13px;
}

.check input{
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.btn{
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(2, 6, 23, 0.35);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
  font-weight: 800;
  cursor:pointer;
  transition: transform 0.05s ease, border-color 0.12s ease, background 0.12s ease;
}
.btn:hover{
  border-color: rgba(148, 163, 184, 0.32);
}
.btn:active{
  transform: translateY(1px);
}
.btn-primary{
  background: linear-gradient(180deg, rgba(79,70,229,0.95), rgba(109,40,217,0.85));
  border-color: rgba(99,102,241,0.6);
}
.btn-danger{
  border-color: rgba(239,68,68,0.5);
}
.btn-danger.btn-soft{
  background: rgba(239,68,68,0.1);
}
.btn-ghost{
  background: rgba(2, 6, 23, 0.15);
}
.row-actions{
  padding: 0 14px 6px;
  display:flex;
  gap: 10px;
  align-items:center;
}
.row-actions .btn{
  flex:1;
}

.items-list{
  padding: 0 14px 14px;
  display:flex;
  flex-direction:column;
  gap: 10px;
}
.item-card{
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(15, 23, 42, 0.45);
  padding: 12px 12px;
}
.item-card-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 10px;
}
.item-card-title{
  display:flex;
  flex-direction:column;
  gap: 3px;
}
.item-card-title strong{
  font-size: 13px;
}
.item-card-title span{
  color: var(--muted2);
  font-size: 12px;
}
.item-remove{
  border-radius: 10px;
  padding: 8px 10px;
  border: 1px solid rgba(239,68,68,0.45);
  background: rgba(239,68,68,0.1);
  color: #fecaca;
  cursor:pointer;
  font-weight: 800;
}

.item-card-meta{
  margin-top: 10px;
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
}
.pill{
  font-size: 12px;
  color: var(--muted);
  border: 1px solid rgba(148, 163, 184, 0.16);
  padding: 6px 8px;
  border-radius: 999px;
}

.canvas-wrap{
  padding: 12px 14px 10px;
  flex: 1;
  display:flex;
  align-items:center;
  justify-content:center;
}

#mainCanvas{
  width: 100%;
  height: 520px;
  border-radius: 14px;
  background: rgba(2, 6, 23, 0.25);
  border: 1px solid rgba(148, 163, 184, 0.18);
  cursor: grab;
}

#mainCanvas:active{
  cursor: grabbing;
}

.legend{
  padding: 10px 14px 14px;
  border-top: 1px solid rgba(148, 163, 184, 0.12);
}
.legend-title{
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 8px;
}
.legend-items{
  display:flex;
  flex-direction:column;
  gap: 8px;
}
.legend-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 10px;
}
.legend-left{
  display:flex;
  align-items:center;
  gap: 10px;
}
.swatch{
  width: 12px;
  height: 12px;
  border-radius: 3px;
}
.legend-name{
  font-size: 12px;
  color: rgba(226, 232, 240, 0.85);
}
.legend-count{
  font-size: 12px;
  color: var(--muted2);
  font-weight: 700;
}

.view-controls{
  padding: 12px 14px 0;
  display:flex;
  gap: 16px;
  flex-wrap:wrap;
  align-items:center;
}

.compact-field{
  min-width: 230px;
}
.compact-field .label{
  display:block;
  margin-bottom: 5px;
}

.spacer{
  flex: 1;
}

.btn-small{
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 12px;
}

.warnings{
  padding: 0 14px 14px;
  display:flex;
  flex-direction:column;
  gap: 10px;
}
.warning{
  border-radius: 14px;
  padding: 10px 12px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(2, 6, 23, 0.25);
  color: var(--text);
}
.warning.error{
  border-color: rgba(239,68,68,0.55);
  background: rgba(239,68,68,0.10);
}
.warning.warn{
  border-color: rgba(245,158,11,0.55);
  background: rgba(245,158,11,0.12);
}
.warning.muted{
  color: rgba(226, 232, 240, 0.7);
}

.history{
  padding: 0 14px 14px;
  display:flex;
  flex-direction:column;
  gap: 10px;
}
.history-card{
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(15, 23, 42, 0.45);
  padding: 12px;
}
.history-top{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap: 10px;
}
.history-title{
  display:flex;
  flex-direction:column;
  gap: 3px;
}
.history-title strong{
  font-size: 12px;
}
.history-title span{
  font-size: 12px;
  color: var(--muted2);
}
.history-actions{
  display:flex;
  gap: 8px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.mini-btn{
  border-radius: 10px;
  padding: 8px 10px;
  border: 1px solid rgba(148, 163, 184, 0.20);
  background: rgba(2, 6, 23, 0.15);
  color: var(--text);
  cursor:pointer;
  font-weight: 800;
  font-size: 12px;
}
.mini-btn.danger{
  border-color: rgba(239,68,68,0.5);
  background: rgba(239,68,68,0.12);
  color: #fecaca;
}
.muted{
  color: var(--muted2);
}
.info-box{
  padding: 10px 12px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(2, 6, 23, 0.25);
  border-radius: 14px;
  color: rgba(226, 232, 240, 0.85);
  line-height: 1.5;
  font-size: 12px;
}

@media (prefers-reduced-motion: reduce){
  *{ transition:none !important; }
}