/* ===== RESET & VARIABLES ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#0a0a0f;--bg2:#111118;--card:#16161f;--card-h:#1c1c28;
  --text:#f0f0f5;--text2:#9898a8;--muted:#6b6b7b;
  --accent:#6366f1;--accent-l:#818cf8;--glow:rgba(99,102,241,.15);
  --green:#22c55e;--red:#ef4444;--yellow:#eab308;--blue:#3b82f6;--orange:#f59e0b;
  --border:#2a2a35;--r:10px;
  --font:'Inter',system-ui,sans-serif;--mono:'JetBrains Mono',monospace;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;overflow:hidden;height:100vh}

/* ===== NAVBAR ===== */
.navbar{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 20px;background:var(--bg2);border-bottom:1px solid var(--border);
  position:relative;z-index:100;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:12px;min-width:180px}
.nav-right{justify-content:flex-end}
.brand{display:flex;align-items:center;gap:8px}
.brand-name{font-weight:700;font-size:.95rem}
.nav-center{display:flex;gap:4px}
.nav-tab{
  background:none;border:none;color:var(--text2);padding:6px 16px;
  border-radius:6px;font-size:.85rem;font-weight:500;cursor:pointer;
  font-family:var(--font);transition:all .2s;
}
.nav-tab:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-tab.active{color:var(--accent-l);background:var(--glow)}
.connection-status{display:flex;align-items:center;gap:8px}
.status-dot{width:8px;height:8px;border-radius:50%;transition:all .3s}
.status-dot.disconnected{background:var(--red);box-shadow:0 0 6px var(--red)}
.status-dot.connecting{background:var(--yellow);box-shadow:0 0 6px var(--yellow);animation:pulse 1s infinite}
.status-dot.connected{background:var(--green);box-shadow:0 0 6px var(--green)}
.status-label{font-size:.8rem;color:var(--muted);font-family:var(--mono)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* ===== MAIN LAYOUT ===== */
.main-layout{
  display:grid;grid-template-columns:280px 1fr 260px;
  height:calc(100vh - 52px);overflow:hidden;
}

/* ===== SIDEBARS ===== */
.sidebar{
  background:var(--bg2);border-right:1px solid var(--border);
  overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;
}
.sidebar-right{border-right:none;border-left:1px solid var(--border)}
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:16px}
.panel-title{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--accent-l);margin-bottom:12px}

/* ===== FORM ELEMENTS ===== */
.form-group{margin-bottom:10px}
.form-group label{display:block;font-size:.75rem;color:var(--muted);margin-bottom:4px;font-family:var(--mono)}
.form-group textarea,.form-group input,.form-group select{
  width:100%;padding:8px 10px;background:var(--bg);border:1px solid var(--border);
  border-radius:6px;color:var(--text);font-size:.8rem;font-family:var(--mono);
  resize:vertical;outline:none;transition:border .2s;
}
.form-group textarea:focus,.form-group input:focus,.form-group select:focus{border-color:var(--accent)}
.form-group select{cursor:pointer}
.speed-control{display:flex;align-items:center;gap:8px}
.speed-control input[type=range]{flex:1;accent-color:var(--accent)}
.speed-control span{font-size:.75rem;color:var(--muted);font-family:var(--mono);min-width:60px}

/* ===== BUTTONS ===== */
.btn-row{display:flex;gap:8px}
.btn{
  padding:8px 16px;border:none;border-radius:6px;font-size:.8rem;font-weight:600;
  cursor:pointer;font-family:var(--font);transition:all .2s;flex:1;text-align:center;
}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover:not(:disabled){background:var(--accent-l)}
.btn-danger{background:rgba(239,68,68,.15);color:var(--red);border:1px solid rgba(239,68,68,.3)}
.btn-danger:hover:not(:disabled){background:rgba(239,68,68,.25)}
.btn-success{background:rgba(34,197,94,.15);color:var(--green);border:1px solid rgba(34,197,94,.3)}
.btn-success:hover:not(:disabled){background:rgba(34,197,94,.25)}
.btn-warning{background:rgba(234,179,8,.15);color:var(--yellow);border:1px solid rgba(234,179,8,.3)}
.btn-warning:hover:not(:disabled){background:rgba(234,179,8,.25)}
.btn-small{padding:4px 12px;font-size:.75rem}

/* ===== STAT LIST ===== */
.stat-list{display:flex;flex-direction:column;gap:6px}
.stat-row{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;padding:4px 0;border-bottom:1px solid rgba(255,255,255,.04)}
.stat-row span:first-child{color:var(--text2)}
.stat-row span:last-child{font-family:var(--mono);font-weight:600}
.stat-row .highlight{color:var(--accent-l);font-size:.95rem}

/* ===== CENTER AREA ===== */
.center-area{
  display:flex;flex-direction:column;overflow:hidden;padding:16px;
  background:var(--bg);
}
.center-area.hidden{display:none}
.grid-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.grid-header h2{font-size:1.1rem;font-weight:700}
.grid-info{display:flex;gap:12px;font-size:.8rem;color:var(--muted);font-family:var(--mono);align-items:center}
.grid-info .sep{color:var(--border)}

/* ===== CANVAS ===== */
.grid-wrapper{
  flex:1;display:flex;align-items:center;justify-content:center;
  background:var(--bg2);border:1px solid var(--border);border-radius:var(--r);
  overflow:hidden;position:relative;min-height:0;
}
#gameCanvas{max-width:100%;max-height:100%;image-rendering:pixelated}

/* ===== LEGEND ===== */
.legend{display:flex;gap:16px;justify-content:center;margin-top:10px;flex-wrap:wrap}
.legend-item{display:flex;align-items:center;gap:6px;font-size:.75rem;color:var(--text2)}
.legend-color{width:14px;height:14px;border-radius:3px}
.legend-color.wall{background:#374151}
.legend-color.floor{background:#1a1a2e}
.legend-color.bot{background:var(--accent)}
.legend-color.dropoff{background:var(--orange)}
.legend-color.item-needed{background:var(--green)}
.legend-color.item-other{background:#64748b}
.legend-color.target{background:var(--red);opacity:.6}

/* ===== ORDERS / ITEMS / INVENTORY ===== */
.orders-list,.items-list,.inventory-list{display:flex;flex-direction:column;gap:6px;max-height:200px;overflow-y:auto}
.empty-state{font-size:.8rem;color:var(--muted);text-align:center;padding:12px}
.order-card{
  padding:8px 10px;background:var(--bg);border:1px solid var(--border);
  border-radius:6px;font-size:.75rem;
}
.order-card.active{border-color:var(--green);background:rgba(34,197,94,.05)}
.order-card.preview{border-color:var(--yellow);background:rgba(234,179,8,.03)}
.order-card.complete{border-color:var(--muted);opacity:.5}
.order-header{display:flex;justify-content:space-between;margin-bottom:4px}
.order-id{font-weight:700;font-family:var(--mono)}
.order-status{font-size:.7rem;padding:1px 6px;border-radius:4px;font-weight:600}
.order-status.active{background:rgba(34,197,94,.15);color:var(--green)}
.order-status.preview{background:rgba(234,179,8,.15);color:var(--yellow)}
.order-items{display:flex;flex-wrap:wrap;gap:4px}
.order-item-tag{
  padding:2px 6px;border-radius:3px;font-size:.7rem;font-family:var(--mono);
  background:rgba(255,255,255,.05);color:var(--text2);
}
.order-item-tag.delivered{text-decoration:line-through;opacity:.4}
.item-row{display:flex;justify-content:space-between;font-size:.75rem;padding:4px 6px;border-radius:4px;background:var(--bg)}
.item-type{font-weight:600}
.item-pos{font-family:var(--mono);color:var(--muted)}
.inv-item{
  padding:6px 10px;background:var(--glow);border:1px solid rgba(99,102,241,.2);
  border-radius:6px;font-size:.8rem;font-weight:600;color:var(--accent-l);
  font-family:var(--mono);
}

/* ===== STATS TAB ===== */
.stats-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:20px}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:16px;text-align:center}
.sc-val{font-size:2rem;font-weight:800;color:var(--accent-l);font-family:var(--mono)}
.sc-label{font-size:.75rem;color:var(--muted);margin-top:4px}
.chart-box{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:16px;flex:1;min-height:0}
.chart-box h3{font-size:.9rem;margin-bottom:12px}
.chart-box canvas{width:100%!important;max-height:300px}

/* ===== LOG TAB ===== */
.log-container{
  flex:1;overflow-y:auto;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r);padding:12px;font-family:var(--mono);font-size:.75rem;
}
.log-entry{padding:3px 0;border-bottom:1px solid rgba(255,255,255,.03);display:flex;gap:8px}
.log-time{color:var(--muted);min-width:70px}
.log-type{min-width:60px;font-weight:600}
.log-type.action{color:var(--blue)}
.log-type.pickup{color:var(--green)}
.log-type.dropoff{color:var(--orange)}
.log-type.move{color:var(--accent-l)}
.log-type.error{color:var(--red)}
.log-type.info{color:var(--text2)}
.log-type.score{color:var(--yellow)}
.log-msg{color:var(--text2)}

/* ===== CONFIG TAB ===== */
.config-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--muted)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .main-layout{grid-template-columns:240px 1fr 220px}
}
@media(max-width:768px){
  .main-layout{grid-template-columns:1fr;grid-template-rows:auto 1fr auto}
  .sidebar{flex-direction:row;overflow-x:auto;padding:8px}
  .sidebar .panel{min-width:250px}
  .config-grid{grid-template-columns:1fr}
  .stats-cards{grid-template-columns:repeat(2,1fr)}
}