/* Valorant Node - Ascent + Ultra Optimized (GPU, no blur on low, contain, will-change) */
:root{
  --bg:#0f1923; --bg2:#1a242e; --card:#1e2a36; --line:rgba(255,255,255,.08);
  --red:#ff4655; --red2:#ff2b3d; --cyan:#00e5cc; --text:#ece8e1; --muted:rgba(236,232,225,.55);
  --radius:12px; --shadow:0 8px 30px rgba(0,0,0,.4);
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;-webkit-font-smoothing:antialiased}
html,body{width:100%;height:100%;background:var(--bg);color:var(--text);font-family:'Segoe UI','PingFang SC',system-ui,sans-serif;overflow:hidden;overscroll-behavior:none}
button,input,select{font:inherit}

/* Top Nav - GPU */
.top-nav{position:fixed;top:0;left:0;right:0;height:56px;background:rgba(15,25,35,.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 16px;z-index:20;transform:translateZ(0);will-change:transform}
.nav-left{display:flex;align-items:center;gap:16px}
.logo{font-weight:900;letter-spacing:.12em;font-size:1.1rem;color:var(--red)}
.logo-sub{font-size:.7rem;color:var(--muted);margin-left:6px;letter-spacing:.2em}
.nav-link{background:none;border:none;color:var(--muted);padding:8px 12px;border-radius:8px;cursor:pointer;transition:.15s;transform:translateZ(0)}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--text);background:rgba(255,70,85,.15);border:1px solid rgba(255,70,85,.25)}
.nav-right{display:flex;align-items:center;gap:10px}
.user-display{font-size:.85rem;color:var(--muted);max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.btn{border:none;border-radius:8px;padding:10px 16px;cursor:pointer;transition:transform .08s,background .15s,opacity .15s;will-change:transform;transform:translateZ(0)}
.btn:active{transform:scale(.97) translateZ(0)}
.btn-primary{background:linear-gradient(135deg,var(--red),var(--red2));color:#fff;box-shadow:0 4px 14px rgba(255,70,85,.35)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-sm{padding:6px 10px;font-size:.85rem}
.btn-lg{padding:14px 22px;font-size:1rem;font-weight:700}
.w-full{width:100%}

/* Layout - contain */
#app{position:fixed;inset:56px 0 0 0;overflow:auto;padding:20px;background:radial-gradient(1200px 600px at 20% -10%,rgba(255,70,85,.08),transparent),radial-gradient(1000px 500px at 90% 10%,rgba(0,229,204,.06),transparent),var(--bg);contain:layout style;transform:translateZ(0)}
.view{display:none;max-width:1100px;margin:0 auto;contain:layout}
.view.active{display:block}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}
@media(max-width:860px){.grid-2{grid-template-columns:1fr} .top-nav{height:52px} #app{inset:52px 0 0 0} .top-nav{backdrop-filter:none;-webkit-backdrop-filter:none;background:rgba(15,25,35,.98)}}
.hero{text-align:center;padding:28px 16px;background:linear-gradient(180deg,rgba(255,70,85,.08),transparent);border:1px solid var(--line);border-radius:var(--radius);contain:layout}
.hero-title{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:900;letter-spacing:.15em}
.hero-title span{color:var(--red)}
.hero-sub{color:var(--muted);margin-top:6px}
.hero-stats{display:flex;justify-content:center;gap:24px;margin-top:14px}
.stat{text-align:center}
.stat span{font-weight:800;font-size:1.2rem;color:var(--cyan)}
.stat label{display:block;font-size:.7rem;color:var(--muted);letter-spacing:.12em}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);contain:layout style;transform:translateZ(0)}
.card h3{font-size:1rem;letter-spacing:.06em;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.badge{font-size:.7rem;background:rgba(255,70,85,.15);color:var(--red);border:1px solid rgba(255,70,85,.25);padding:2px 6px;border-radius:6px}
.stack{display:flex;flex-direction:column;gap:10px}
.row{display:flex;gap:8px;align-items:center}
.row.center{justify-content:center}
.input{flex:1;background:rgba(0,0,0,.25);border:1px solid var(--line);color:var(--text);padding:10px 12px;border-radius:8px;outline:none}
.input:focus{border-color:rgba(255,70,85,.4)}
.muted{font-size:.8rem;color:var(--muted)}
.divider{height:1px;background:var(--line);margin:8px 0}
.center{text-align:center}

/* Tabs / Modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);display:none;align-items:center;justify-content:center;z-index:50;padding:16px}
.modal.open{display:flex}
.modal-card{background:#0f1923;border:1px solid var(--line);border-radius:16px;max-width:420px;width:100%;padding:20px;box-shadow:0 20px 60px rgba(0,0,0,.6);transform:translateZ(0)}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.btn-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--text);cursor:pointer}
.tabs{display:flex;gap:6px;margin-bottom:12px}
.tab{flex:1;padding:8px;border-radius:8px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--muted);cursor:pointer}
.tab.active{background:rgba(255,70,85,.15);color:var(--text);border-color:rgba(255,70,85,.3)}
.tab-panel{display:none;flex-direction:column;gap:10px}
.tab-panel.active{display:flex}
.tab-panel input{background:rgba(0,0,0,.25);border:1px solid var(--line);color:var(--text);padding:12px;border-radius:8px;outline:none}
.auth-msg{min-height:18px;font-size:.85rem;margin-top:8px;color:var(--red)}

/* Room list - virtualized feel */
.room-list{display:flex;flex-direction:column;gap:8px;max-height:240px;overflow:auto;overscroll-behavior:contain}
.room-item{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;background:rgba(0,0,0,.2);border:1px solid var(--line);border-radius:8px;cursor:pointer;transition:.12s;transform:translateZ(0);contain:layout}
.room-item:hover{border-color:rgba(255,70,85,.25);background:rgba(255,70,85,.06)}
.room-meta{font-size:.75rem;color:var(--muted)}
.room-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.team-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.team{background:rgba(0,0,0,.2);border:1px solid var(--line);border-radius:10px;padding:10px;contain:layout}
.team h4{font-size:.85rem;margin-bottom:8px;display:flex;justify-content:space-between}
.team-list{display:flex;flex-direction:column;gap:6px;min-height:80px}
.player-chip{display:flex;justify-content:space-between;align-items:center;padding:6px 8px;background:rgba(255,255,255,.06);border-radius:8px;font-size:.85rem;contain:layout;transform:translateZ(0)}
.player-chip.ready{border:1px solid rgba(0,229,204,.4);background:rgba(0,229,204,.08)}
.player-chip.self{outline:1px solid var(--red)}
.cnt{color:var(--cyan)}
.room-actions{margin-top:12px;display:flex;flex-direction:column;gap:10px}
.room-chat{border:1px solid var(--line);border-radius:10px;overflow:hidden;contain:layout}
.chat-log{height:120px;overflow:auto;padding:8px;background:rgba(0,0,0,.2);font-size:.85rem;overscroll-behavior:contain}
.chat-log div{margin-bottom:4px}
.chat-input{display:flex;gap:6px;padding:6px;background:rgba(255,255,255,.04)}
.chat-input input{flex:1;background:rgba(0,0,0,.25);border:1px solid var(--line);color:var(--text);padding:8px;border-radius:8px}

.queue-status{display:flex;align-items:center;gap:10px;padding:10px;background:rgba(0,229,204,.08);border:1px solid rgba(0,229,204,.2);border-radius:8px;transform:translateZ(0)}
.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.2);border-top-color:var(--cyan);border-radius:50%;animation:spin .8s linear infinite;will-change:transform}
@keyframes spin{to{transform:rotate(360deg)}}

/* Friends */
.friend-list{display:flex;flex-direction:column;gap:8px;max-height:320px;overflow:auto;overscroll-behavior:contain}
.friend-item{display:flex;justify-content:space-between;align-items:center;padding:10px;background:rgba(0,0,0,.2);border:1px solid var(--line);border-radius:8px;contain:layout;transform:translateZ(0)}
.friend-item .name{font-weight:600}
.friend-item .sub{font-size:.75rem;color:var(--muted)}
.checkbox{display:flex;align-items:center;gap:6px;font-size:.85rem}

/* Leaderboard */
.lb-list{display:flex;flex-direction:column;gap:6px}
.lb-row{display:flex;align-items:center;gap:12px;padding:10px;background:rgba(0,0,0,.2);border-radius:8px;border:1px solid var(--line);contain:layout;transform:translateZ(0)}
.lb-rank{width:36px;text-align:center;font-weight:800}
.lb-rank.gold{color:#FFD700} .lb-rank.silver{color:#C0C0C0} .lb-rank.bronze{color:#CD7F32}
.lb-name{flex:1}
.lb-score{color:var(--red);font-weight:700}

/* Mode cards */
.mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:700px){.mode-grid{grid-template-columns:1fr}}
.mode-card{background:rgba(0,0,0,.2);border:1px solid var(--line);border-radius:12px;padding:16px;cursor:pointer;transition:.15s;text-align:center;color:var(--text);transform:translateZ(0);contain:layout}
.mode-card:hover{border-color:rgba(255,70,85,.3);transform:translateY(-2px) translateZ(0)}
.mc-icon{font-size:1.8rem;display:block}
.mc-title{font-weight:800;margin-top:6px;display:block}
.mc-desc{font-size:.8rem;color:var(--muted)}

/* Game Layer - Ultra GPU */
.game-layer{position:fixed;inset:0;background:#000;display:none;z-index:30;contain:layout}
.game-layer.active{display:block}
#game-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;transform:translateZ(0);will-change:transform;image-rendering:optimizeSpeed}
.game-hud{position:absolute;inset:0;pointer-events:none;contain:layout}
.game-hud > *{pointer-events:auto}
.crosshair{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) translateZ(0);font-size:22px;color:rgba(255,255,255,.9);text-shadow:0 1px 4px #000;will-change:transform}
.crosshair.hit{color:var(--red);animation:hit .15s}
@keyframes hit{0%{transform:translate(-50%,-50%) scale(1.6) translateZ(0)} 100%{transform:translate(-50%,-50%) scale(1) translateZ(0)}}
.hud-tl{position:absolute;top:12px;left:12px;display:flex;flex-direction:column;gap:6px;width:150px;transform:translateZ(0)}
.bar-group{font-size:.75rem}
.bar-label{display:flex;justify-content:space-between;color:var(--text)}
.bar-outer{height:6px;background:rgba(255,255,255,.12);border-radius:3px;overflow:hidden}
.bar-fill{height:100%;transition:width .15s linear;will-change:width}
.bar-fill.hp{background:linear-gradient(90deg,var(--red),#ff7a85)}
.bar-fill.shield{background:linear-gradient(90deg,#0ea5e9,#22d3ee)}
.hud-tr{position:absolute;top:12px;right:12px;text-align:right;transform:translateZ(0)}
.score-big{font-weight:900;font-size:1.3rem;color:#fff}
.score-sub{font-size:.8rem;color:var(--muted)}
.net-stats{font-size:.7rem;color:rgba(255,255,255,.5);margin-top:4px}
.hud-br{position:absolute;bottom:16px;right:12px;text-align:right;transform:translateZ(0)}
.ammo-box{background:rgba(0,0,0,.45);border:1px solid var(--line);padding:8px 12px;border-radius:10px; /* blur removed for perf */ }
.ammo-cur{font-size:1.6rem;font-weight:800}
.ammo-sep{opacity:.4;margin:0 4px}
.ammo-res{opacity:.5}
.weapon-name{font-size:.65rem;letter-spacing:.15em;color:var(--muted)}
.reload-bar{height:3px;background:rgba(255,255,255,.15);border-radius:2px;margin-top:6px;overflow:hidden}
.reload-fill{height:100%;width:0%;background:var(--cyan);transition:width .1s linear;will-change:width}
.hud-bl{position:absolute;bottom:16px;left:12px;transform:translateZ(0)}
.kill-feed{font-size:.8rem;color:#fff;text-shadow:0 1px 2px #000;min-height:60px;contain:layout}
.kill-feed div{margin-bottom:4px;background:rgba(0,0,0,.45);padding:4px 8px;border-radius:6px;border-left:3px solid var(--red);transform:translateZ(0)}
.ability-row{display:flex;gap:6px;margin-top:8px}
.ability{width:36px;height:36px;background:rgba(0,0,0,.45);border:1px solid var(--line);border-radius:8px;display:grid;place-items:center;font-weight:700;color:var(--muted)}
.ability.ult{border-color:rgba(255,215,0,.3);color:#FFD700}
.game-center-msg{position:absolute;left:50%;top:40%;transform:translate(-50%,-50%) translateZ(0);font-size:1.6rem;font-weight:900;color:#fff;text-shadow:0 2px 10px #000;text-align:center;pointer-events:none;will-change:transform}
.game-exit{position:absolute;top:12px;left:50%;transform:translateX(-50%) translateZ(0)}
.touch-controls{position:absolute;inset:0;display:none;pointer-events:none;contain:layout}
.touch-controls.active{display:block}
.joy-zone{position:absolute;left:0;bottom:0;width:40%;height:55%;display:grid;place-items:center;pointer-events:auto}
.joy-base{width:110px;height:110px;border-radius:50%;background:rgba(255,255,255,.06);border:2px solid rgba(255,255,255,.12);position:relative;will-change:transform}
.joy-thumb{position:absolute;left:50%;top:50%;width:44px;height:44px;margin:-22px 0 0 -22px;border-radius:50%;background:rgba(255,70,85,.25);border:2px solid rgba(255,70,85,.5);will-change:transform;transform:translateZ(0)}
.look-zone{position:absolute;right:0;top:0;width:60%;height:60%;pointer-events:auto}
.touch-btns{position:absolute;right:0;bottom:0;width:60%;height:40%;pointer-events:none}
.tbtn{position:absolute;border-radius:50%;border:2px solid rgba(255,255,255,.15);background:rgba(255,255,255,.08);color:#fff;font-weight:700;pointer-events:auto;touch-action:none;will-change:transform;transform:translateZ(0)}
.tbtn:active{background:rgba(255,70,85,.3)}
.tbtn.fire{width:72px;height:72px;right:16px;bottom:12px;background:rgba(255,70,85,.25);border-color:rgba(255,70,85,.5);font-size:1.6rem}
.tbtn.jump{width:52px;height:52px;right:100px;bottom:20px}
.tbtn.reload{width:48px;height:48px;right:16px;bottom:92px}
.tbtn.crouch{width:48px;height:48px;right:74px;bottom:92px}
.damage-flash{position:absolute;inset:0;pointer-events:none;border:0 solid transparent;transition:border .1s;will-change:border}
.damage-flash.active{border:6px solid rgba(255,0,0,.35);animation:flash .3s}
@keyframes flash{0%{opacity:1} 100%{opacity:0}}
.toast{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%) translateZ(0);background:rgba(0,0,0,.85);border:1px solid rgba(255,70,85,.3);color:#fff;padding:12px 20px;border-radius:10px;display:none;z-index:60;max-width:80%;text-align:center;will-change:transform,opacity}
.toast.show{display:block;animation:toastIn .2s}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,-50%) scale(.9) translateZ(0)} to{opacity:1;transform:translate(-50%,-50%) scale(1) translateZ(0)}}

/* Scrollbar */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:3px}

/* 低端机再降级 */
@media (max-width:480px){
  .hero{padding:18px 12px}
  .card{padding:12px}
  #game-canvas{image-rendering:crisp-edges}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
}