/* Synergy Survivor - Dark theme */
:root{
  --bg:#0b0e13; --card:#0f141b; --muted:#7b8a9a; --text:#dbe7f3; --line:#1e2530; --accent:#a3e635; --accent-600:#65a30d;
  --danger:#ef4444; --ok:#22c55e; --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji;line-height:1.45}

.app-header{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line);background:linear-gradient(180deg, rgba(163,230,53,0.05), rgba(11,14,19,0))}
.logo{filter:drop-shadow(0 0 8px rgba(163,230,53,0.25))}
.titles{display:flex;flex-direction:column}
.app-title{margin:0;font-size:20px;letter-spacing:.2px}
.app-subtitle{margin:2px 0 0;color:var(--muted);font-size:12px}
.pill{border:1px solid var(--line);padding:6px 10px;border-radius:999px;font-size:12px}
.pill.ok{border-color:rgba(34,197,94,.5);color:#9ae6b4}
.pill.muted{color:var(--muted)}
.spacer{flex:1}

.layout{display:grid;grid-template-columns: 360px 1fr;gap:16px;max-width:1200px;margin:18px auto;padding:0 16px}
.panel{display:flex;flex-direction:column;gap:16px}

.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow)}
.card h2,.card h3{margin:0 0 10px}

.field{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}
label{font-weight:600;font-size:13px;color:#b8c7d8}
.help{color:var(--muted);font-size:12px}
.small{font-size:12px}
.muted{color:var(--muted)}
.row{display:flex;align-items:center;gap:8px}
.grid{display:grid;gap:12px}
.g2{grid-template-columns:1fr 1fr}

select, input[type=text], input[type=number], input[type=url], input[type=file]{
  width:100%;padding:10px 12px;background:#0b0f15;border:1px solid var(--line);color:var(--text);border-radius:10px;outline:none
}
select[multiple]{height:140px}
input:focus, select:focus{border-color:#2a3442;box-shadow:0 0 0 2px rgba(163,230,53,.15)}

.btn{appearance:none;border:none;background:#1a222d;color:var(--text);padding:10px 14px;border-radius:10px;cursor:pointer;border:1px solid var(--line);transition:.15s}
.btn:hover{filter:brightness(1.05)}
.btn.primary{background:linear-gradient(180deg, var(--accent), #7dd61a);color:#0a1600;border-color:#6fb311}
.btn.ghost{background:transparent}

.alert{border-radius:10px;padding:10px 12px;margin-top:10px;border:1px solid var(--line)}
.alert.error{border-color:rgba(239,68,68,.5);background:rgba(239,68,68,.08)}
.alert.ok{border-color:rgba(34,197,94,.5);background:rgba(34,197,94,.08)}

.list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.list.compact li{display:flex;justify-content:space-between}
.list.scroll{max-height:220px;overflow:auto;padding-right:8px}

.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0}
.chip{background:#0b0f15;border:1px solid var(--line);border-radius:999px;padding:6px 10px;font-size:12px}

.app-footer{max-width:1200px;margin:12px auto;padding:12px 16px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted)}

#simCanvas{width:100%;height:auto;border-radius:12px;border:1px solid var(--line);background:#0b0e13}

.toast{position:fixed;left:50%;transform:translateX(-50%) translateY(10px);bottom:16px;background:#111827;color:#d1fae5;border:1px solid #064e3b;border-radius:12px;padding:10px 14px;opacity:0;transition:opacity .2s, transform .2s;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

@media (max-width: 980px){
  .layout{grid-template-columns:1fr}
}