#racing-arena-hud{position:fixed;top:16px;left:24px;z-index:410;opacity:0;pointer-events:none;transition:opacity .35s;color:#eafff8}
#racing-arena-hud.visible{opacity:1;pointer-events:auto}
.racing-arena-title{font-family:"Orbitron",sans-serif;font-size:1.24rem;font-weight:900;color:#f0c36b;letter-spacing:3px;text-shadow:0 0 26px rgba(240,195,107,.42)}
.racing-arena-subtitle{font-size:.76rem;color:#9fded7;letter-spacing:2px;text-transform:uppercase;margin-top:4px}
.racing-arena-progress{margin-top:10px;display:flex;align-items:center;gap:10px;font-family:"Orbitron",sans-serif;font-size:.74rem;letter-spacing:1px;color:#dbe9e2}
#racing-arena-core-count{color:#f0c36b}
#racing-arena-exit{position:fixed;top:16px;right:24px;z-index:410;background:rgba(20,70,70,.2);border:1px solid rgba(240,195,107,.42);border-radius:8px;padding:8px 18px;color:#f0c36b;font-family:"Orbitron",sans-serif;font-size:.68rem;letter-spacing:2px;cursor:pointer;opacity:0;pointer-events:none;transition:all .25s}
#racing-arena-exit.visible{opacity:1;pointer-events:auto}
#racing-arena-exit:hover{background:rgba(240,195,107,.16);box-shadow:0 0 22px rgba(240,195,107,.24)}
#racing-arena-hints{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);z-index:410;background:rgba(7,25,28,.88);backdrop-filter:blur(10px);border:1px solid rgba(125,199,201,.3);border-radius:8px;padding:10px 22px;color:#a8d0cf;font-size:.78rem;letter-spacing:1px;display:flex;gap:18px;opacity:0;pointer-events:none;transition:opacity .35s}
#racing-arena-hints.visible{opacity:1}

.racing-arena-select-modal{position:fixed;inset:0;z-index:760;background:rgba(3,13,16,.72);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .2s}
.racing-arena-select-modal.visible{opacity:1;pointer-events:auto}
.racing-arena-select-panel{width:min(980px,94vw);max-height:90vh;overflow:auto;background:linear-gradient(160deg,rgba(10,31,34,.98),rgba(24,38,34,.98));border:1px solid rgba(240,195,107,.36);border-radius:10px;box-shadow:0 24px 80px rgba(0,0,0,.56),0 0 60px rgba(125,199,201,.16);color:#dbe9e2;padding:24px}
.racing-arena-select-header{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:18px}
.racing-arena-kicker{font-size:.7rem;text-transform:uppercase;color:#7dc7c9;letter-spacing:3px}
.racing-arena-select-header h2{font-family:"Orbitron",sans-serif;font-size:1.42rem;color:#f0c36b;margin-top:5px;letter-spacing:2px}
.racing-arena-close{width:36px;height:36px;border:1px solid rgba(240,195,107,.42);border-radius:8px;background:rgba(240,195,107,.1);color:#f0c36b;cursor:pointer;font-family:"Orbitron",sans-serif;font-size:.86rem}
.racing-arena-close:hover{background:rgba(240,195,107,.2)}
.racing-arena-select-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:18px}
.racing-arena-robot-section,.racing-arena-briefing{border:1px solid rgba(125,199,201,.26);border-radius:8px;background:rgba(8,24,27,.72);padding:16px;display:flex;flex-direction:column;gap:12px}
.racing-arena-section-title{font-family:"Orbitron",sans-serif;font-size:.76rem;color:#f0c36b;letter-spacing:2px;text-transform:uppercase}
.racing-arena-robot-list{display:flex;flex-direction:column;gap:8px;max-height:360px;overflow:auto;padding-right:4px}
.racing-arena-robot-card{border:1px solid rgba(125,199,201,.24);border-radius:8px;background:rgba(4,16,19,.74);padding:11px 12px;color:#eafff8;text-align:left;display:grid;grid-template-columns:12px 1fr;gap:12px;cursor:pointer;align-items:center;transition:background .15s,border-color .15s,transform .15s}
.racing-arena-robot-card:hover{background:rgba(13,34,37,.92);border-color:rgba(240,195,107,.48);transform:translateY(-1px)}
.racing-arena-robot-card.active{border-color:rgba(240,195,107,.78);background:rgba(240,195,107,.09);box-shadow:0 0 24px rgba(240,195,107,.15)}
.racing-arena-robot-swatch{width:10px;height:44px;border-radius:3px;background:linear-gradient(180deg,#f0c36b,#7dc7c9);box-shadow:0 0 16px rgba(125,199,201,.4)}
.racing-arena-robot-name,.racing-arena-selected-name{font-family:"Orbitron",sans-serif;font-size:.88rem;color:#fff;letter-spacing:1px}
.racing-arena-robot-role,.racing-arena-selected-meta{font-size:.76rem;color:#9fb8b1;margin-top:3px}
.racing-arena-robot-stats{font-size:.7rem;color:#7dc7c9;font-family:"Orbitron",sans-serif;letter-spacing:1px;margin-top:4px}
.racing-arena-briefing-grid{display:grid;grid-template-columns:1fr;gap:8px}
.racing-arena-briefing-grid div{border:1px solid rgba(240,195,107,.18);border-radius:8px;background:rgba(4,16,19,.58);padding:10px 12px;display:flex;justify-content:space-between;gap:12px;align-items:center}
.racing-arena-briefing-grid span{color:#9fb8b1;font-size:.78rem;letter-spacing:1px}
.racing-arena-briefing-grid strong{font-family:"Orbitron",sans-serif;color:#f0c36b;font-size:.8rem;letter-spacing:1px;text-align:right}
.racing-arena-selected-card{min-height:90px;border:1px solid rgba(125,199,201,.25);border-radius:8px;background:rgba(4,16,19,.64);padding:13px}
.racing-arena-meter{height:9px;border-radius:6px;background:rgba(255,255,255,.1);overflow:hidden;margin-top:12px}
.racing-arena-meter span{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,#7dc7c9,#f0c36b)}
.racing-arena-select-footer{margin-top:18px;display:flex;justify-content:space-between;gap:16px;align-items:center}
.racing-arena-select-status{flex:1;min-height:20px;font-size:.82rem;color:#a8d0cf;letter-spacing:1px}
.racing-arena-select-status.ok{color:#7dc7c9}
.racing-arena-select-status.error{color:#ff9b8b}
.racing-arena-primary-btn{border:1px solid rgba(240,195,107,.52);border-radius:8px;background:linear-gradient(135deg,rgba(240,195,107,.22),rgba(125,199,201,.18));color:#f0c36b;font-family:"Orbitron",sans-serif;font-size:.8rem;letter-spacing:2px;padding:10px 16px;cursor:pointer;transition:background .15s,box-shadow .15s,transform .15s}
.racing-arena-primary-btn:hover{background:linear-gradient(135deg,rgba(240,195,107,.34),rgba(125,199,201,.25));box-shadow:0 0 24px rgba(240,195,107,.25);transform:translateY(-1px)}
.racing-arena-primary-btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.racing-arena-empty{border:1px dashed rgba(125,199,201,.34);border-radius:8px;padding:12px;color:#9fb8b1;font-size:.82rem;text-align:center;letter-spacing:1px}

@media (max-width:880px){
  .racing-arena-select-layout{grid-template-columns:1fr}
  .racing-arena-select-panel{padding:18px}
  #racing-arena-hints{width:calc(100vw - 28px);justify-content:center;flex-wrap:wrap;gap:10px}
}

@media (max-width:620px){
  #racing-arena-hud{left:14px;top:12px}
  #racing-arena-exit{top:12px;right:14px;padding:8px 12px}
  .racing-arena-select-footer{flex-direction:column;align-items:stretch}
  .racing-arena-primary-btn{width:100%}
}