:root{--arena-blue:#25a9ff;--arena-cyan:#69e8ff;--arena-orange:#ff8a24;--arena-gold:#ffc84d;--arena-ink:#020711;--arena-panel:rgba(5,15,29,.82)}
body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;background:radial-gradient(circle at 18% 15%,rgba(37,169,255,.11),transparent 25%),radial-gradient(circle at 84% 22%,rgba(255,138,36,.09),transparent 28%),linear-gradient(115deg,transparent 0 49.5%,rgba(255,255,255,.025) 50%,transparent 50.5%);animation:arenaBreath 8s ease-in-out infinite alternate}
@keyframes arenaBreath{to{filter:brightness(1.2);transform:scale(1.015)}}
.sidebar{box-shadow:18px 0 70px rgba(0,0,0,.28)}
.brand .logo-mark{box-shadow:0 0 25px rgba(37,169,255,.34)}
.nav-item{position:relative;overflow:hidden;transition:transform .18s ease,background .18s ease,border-color .18s ease}
.nav-item::after{content:"";position:absolute;inset:-60% auto -60% -45%;width:34%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.16),transparent);transform:skewX(-18deg);transition:left .45s ease}
.nav-item:hover::after{left:125%}.nav-item:hover{transform:translateX(4px)}
.btn,.icon-btn,.profile-chip{position:relative;overflow:hidden;transition:transform .16s ease,filter .16s ease,box-shadow .16s ease}
.btn:hover,.icon-btn:hover{transform:translateY(-2px);filter:brightness(1.1)}
.btn:active,.icon-btn:active{transform:translateY(1px) scale(.975)}
.btn.primary{box-shadow:0 0 0 1px rgba(105,232,255,.08),0 8px 30px rgba(37,169,255,.15)}
.btn.primary:hover{box-shadow:0 0 0 1px rgba(105,232,255,.22),0 10px 40px rgba(37,169,255,.3)}
.glass,.panel{backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.hero-panel{position:relative;overflow:hidden;border-color:rgba(73,184,255,.24)}
.hero-panel::before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(110deg,rgba(37,169,255,.05),transparent 35%,transparent 65%,rgba(255,138,36,.05));animation:heroSweep 6s linear infinite}
@keyframes heroSweep{0%{transform:translateX(-12%)}50%{transform:translateX(12%)}100%{transform:translateX(-12%)}}
.arena-ribbon{display:flex;align-items:center;gap:10px;min-height:38px;margin-bottom:16px;padding:8px 12px;border:1px solid rgba(105,232,255,.16);border-radius:12px;background:linear-gradient(90deg,rgba(37,169,255,.09),rgba(255,138,36,.055));overflow:hidden}
.arena-ribbon b{color:#fff;letter-spacing:.08em}.arena-ribbon span{color:#9fb4c8}.arena-ribbon .ticker{white-space:nowrap;animation:ticker 18s linear infinite}
@keyframes ticker{from{transform:translateX(30vw)}to{transform:translateX(-70vw)}}
.arena-nav-sep{height:1px;margin:8px 10px;background:linear-gradient(90deg,transparent,rgba(105,232,255,.25),transparent)}
.arena-view{animation:viewIn .32s ease both}@keyframes viewIn{from{opacity:0;transform:translateY(10px) scale(.995)}to{opacity:1;transform:none}}
.arena-hero{position:relative;overflow:hidden;padding:28px;border:1px solid rgba(105,232,255,.2);border-radius:18px;background:linear-gradient(120deg,rgba(8,31,56,.88),rgba(5,13,25,.9) 55%,rgba(55,27,7,.62));box-shadow:0 24px 80px rgba(0,0,0,.25)}
.arena-hero::after{content:"";position:absolute;right:-80px;top:-120px;width:330px;height:330px;border-radius:50%;border:1px solid rgba(255,138,36,.22);box-shadow:0 0 80px rgba(255,138,36,.12),inset 0 0 80px rgba(37,169,255,.08);animation:orb 7s linear infinite}@keyframes orb{to{transform:rotate(360deg)}}
.arena-hero h2{font-size:clamp(28px,4vw,52px);margin:6px 0 8px;letter-spacing:-.03em}.arena-hero h2 em{font-style:normal;color:var(--arena-cyan);text-shadow:0 0 24px rgba(105,232,255,.25)}
.arena-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:16px;margin-top:16px}.arena-card{grid-column:span 4;padding:18px;border:1px solid rgba(123,179,224,.14);border-radius:16px;background:var(--arena-panel);box-shadow:0 16px 45px rgba(0,0,0,.18);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}.arena-card:hover{transform:translateY(-4px);border-color:rgba(105,232,255,.32);box-shadow:0 20px 55px rgba(0,0,0,.28),0 0 30px rgba(37,169,255,.06)}.arena-card.wide{grid-column:span 8}.arena-card.full{grid-column:1/-1}
.arena-card h3{margin:4px 0 8px}.arena-card p{color:#9fb4c8}.arena-stat{font-size:34px;font-weight:900;letter-spacing:-.04em}.arena-stat.orange{color:var(--arena-orange)}
.tournament-list,.team-list{display:grid;gap:12px}.tournament-item,.team-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;padding:14px;border:1px solid rgba(123,179,224,.14);border-radius:13px;background:rgba(255,255,255,.025)}.tournament-item:hover,.team-item:hover{border-color:rgba(105,232,255,.28)}
.tournament-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}.mini-chip{padding:4px 8px;border-radius:999px;background:rgba(37,169,255,.09);border:1px solid rgba(37,169,255,.18);font-size:11px;color:#cbeeff}.mini-chip.orange{background:rgba(255,138,36,.08);border-color:rgba(255,138,36,.2);color:#ffd2ad}
.countdown{font-variant-numeric:tabular-nums;font-weight:900;color:var(--arena-cyan);letter-spacing:.05em}.local-time{font-size:12px;color:#8fa8bd}.tournament-actions{display:flex;gap:8px;align-items:center;justify-content:flex-end;flex-wrap:wrap}
.arena-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.arena-form .span2{grid-column:1/-1}.arena-form label{display:grid;gap:6px;color:#a9bfd1;font-size:12px}.arena-form input,.arena-form select,.arena-form textarea{width:100%;box-sizing:border-box;background:rgba(1,8,16,.72);color:#eef7ff;border:1px solid rgba(125,181,226,.22);border-radius:10px;padding:11px 12px;outline:none}.arena-form input:focus,.arena-form select:focus,.arena-form textarea:focus{border-color:rgba(105,232,255,.55);box-shadow:0 0 0 3px rgba(37,169,255,.08)}
.status-live{color:#72ff9d}.status-soon{color:#ffc84d}.status-open{color:#69e8ff}.trophy-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.trophy{min-height:105px;display:grid;place-items:center;text-align:center;border:1px solid rgba(255,200,77,.16);border-radius:13px;background:radial-gradient(circle at 50% 0,rgba(255,200,77,.1),transparent 65%)}.trophy strong{font-size:25px;color:#ffd66e}
.arena-intro{position:fixed;inset:0;z-index:99999;display:grid;place-items:center;background:#020711;transition:opacity .45s ease,visibility .45s ease}.arena-intro.hide{opacity:0;visibility:hidden}.arena-intro-core{text-align:center}.arena-intro-logo{font-size:clamp(42px,8vw,92px);font-weight:1000;letter-spacing:-.06em;text-shadow:0 0 45px rgba(37,169,255,.32)}.arena-intro-logo span{color:var(--arena-orange)}.arena-intro-line{width:min(420px,70vw);height:2px;margin:18px auto;background:linear-gradient(90deg,transparent,var(--arena-blue),var(--arena-orange),transparent);animation:charge .8s ease both}@keyframes charge{from{transform:scaleX(0)}to{transform:scaleX(1)}}.arena-intro-msg{letter-spacing:.18em;color:#91b7d2;font-size:12px}.impact-ring{position:fixed;z-index:9999;width:14px;height:14px;border:2px solid rgba(105,232,255,.8);border-radius:50%;pointer-events:none;transform:translate(-50%,-50%);animation:impact .55s ease-out forwards}@keyframes impact{to{width:130px;height:130px;opacity:0;border-color:rgba(255,138,36,.5)}}
.mate-found{position:fixed;left:50%;top:18%;z-index:9998;transform:translate(-50%,-30px);opacity:0;padding:13px 22px;border:1px solid rgba(105,232,255,.4);border-radius:12px;background:rgba(3,14,27,.95);font-weight:900;letter-spacing:.1em;box-shadow:0 0 55px rgba(37,169,255,.22);animation:mateFound 2s ease forwards}@keyframes mateFound{15%,70%{opacity:1;transform:translate(-50%,0)}100%{opacity:0;transform:translate(-50%,10px)}}
@media(max-width:900px){.arena-card,.arena-card.wide{grid-column:1/-1}.arena-form{grid-template-columns:1fr}.arena-form .span2{grid-column:auto}.trophy-wall{grid-template-columns:1fr}.tournament-item,.team-item{grid-template-columns:1fr}.tournament-actions{justify-content:flex-start}}
@media(prefers-reduced-motion:reduce){body::after,.hero-panel::before,.arena-ribbon .ticker,.arena-hero::after{animation:none!important}.nav-item,.btn,.arena-card{transition:none!important}}