:root{
  --bg:#0d0b14; --bg2:#15111f; --card:#1b1626; --line:#2a2438;
  --host:#ff2d6f; --guest:#1fd1ff; --gold:#ffd23f;
  --txt:#f3eefb; --muted:#9b91b3; --ok:#36d399; --err:#ff5470;
  --grad:linear-gradient(135deg,#ff2d6f,#b026ff);
  --r:16px; font-synthesis:none;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:radial-gradient(120% 80% at 50% -10%,#1c1430 0%,var(--bg) 55%);
  color:var(--txt);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif;
  -webkit-font-smoothing:antialiased;overscroll-behavior:none;
}
#app{max-width:560px;margin:0 auto;min-height:100%;display:flex;flex-direction:column}
a{color:inherit;text-decoration:none}
.muted{color:var(--muted)}
.hint{color:var(--muted);font-size:.82rem;margin-top:10px;line-height:1.5}

/* TOPBAR */
#topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;background:rgba(13,11,20,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{font-weight:800;font-size:1.25rem;letter-spacing:-.5px}
.brand i{color:var(--gold)}
.brand span{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.top-right{display:flex;gap:10px;align-items:center}
.coins-chip{background:linear-gradient(135deg,#3a2c10,#5a4410);border:1px solid #6b5210;color:var(--gold);
  font-weight:700;border-radius:999px;padding:7px 14px;font-size:.9rem;cursor:pointer;display:flex;gap:6px;align-items:center}
.avatar-btn{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--txt);cursor:pointer}

main#view{flex:1;padding:16px 16px 96px}

/* BOTTOM NAV */
#bottomnav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:560px;z-index:30;
  display:flex;justify-content:space-around;align-items:center;padding:8px 0 calc(8px + env(safe-area-inset-bottom));
  background:rgba(13,11,20,.9);backdrop-filter:blur(14px);border-top:1px solid var(--line)}
.nav-item{display:flex;flex-direction:column;align-items:center;gap:3px;color:var(--muted);font-size:.68rem;font-weight:600;padding:4px 18px}
.nav-item i{font-size:1.15rem}
.nav-item.active{color:var(--txt)}
.nav-cta{background:var(--grad);width:54px;height:54px;border-radius:50%;justify-content:center;color:#fff;margin-top:-22px;
  box-shadow:0 8px 24px rgba(176,38,255,.45);font-size:1.4rem}
.nav-cta span{display:none}

/* CARDS / BUTTONS */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.btn{border:none;border-radius:12px;padding:13px 18px;font-weight:700;font-size:.95rem;cursor:pointer;color:#fff;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .08s,filter .15s}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--grad)}
.btn-secondary{background:#2a2438;color:var(--txt);border:1px solid var(--line)}
.btn-block{width:100%}
.btn-gold{background:linear-gradient(135deg,var(--gold),#ff9d00);color:#231a00}

h2{font-size:1.3rem;margin-bottom:14px;letter-spacing:-.3px}
h2 i{color:var(--host)}
h3{font-size:1rem;margin-bottom:6px}
.narrow{max-width:460px;margin:0 auto}
.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}

/* FORM */
.field{display:block;margin-bottom:14px}
.field span{display:block;font-size:.78rem;color:var(--muted);margin-bottom:6px;font-weight:600}
.field input,.field select,.row input{width:100%;background:#120e1c;border:1px solid var(--line);border-radius:11px;
  padding:13px 14px;color:var(--txt);font-size:1rem;outline:none}
.field input:focus,.field select:focus{border-color:var(--host)}
.form-err{color:var(--err);font-size:.85rem;margin:6px 0;font-weight:600}
.row{display:flex;gap:10px}.row input{flex:1}

/* AUTH */
.auth-wrap{padding-top:6vh}
.auth-hero{text-align:center;margin-bottom:26px}
.logo-big{font-size:2.4rem;font-weight:900;letter-spacing:-1px}
.logo-big i{color:var(--gold)}
.logo-big span{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.tagline{color:var(--muted);margin-top:8px}
.tagline b{color:var(--txt)}
.auth-card{max-width:400px;margin:0 auto}
.tabs{display:flex;background:#120e1c;border-radius:11px;padding:4px;margin-bottom:18px}
.tab{flex:1;background:none;border:none;color:var(--muted);padding:10px;border-radius:8px;font-weight:700;cursor:pointer}
.tab.active{background:var(--card);color:var(--txt)}

/* HOME battle grid */
.battle-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.battle-card{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:3/4;border:1px solid var(--line);
  background:linear-gradient(160deg,#241a33,#140f1f);cursor:pointer;display:flex;flex-direction:column;justify-content:flex-end;padding:12px}
.battle-card .live-dot{position:absolute;top:10px;left:10px;background:var(--host);color:#fff;font-size:.66rem;font-weight:800;
  padding:3px 8px;border-radius:6px;display:flex;align-items:center;gap:5px;letter-spacing:.5px}
.battle-card .lobby-dot{position:absolute;top:10px;left:10px;background:#5a4410;color:var(--gold);font-size:.66rem;font-weight:800;padding:3px 8px;border-radius:6px}
.battle-card .vcount{position:absolute;top:10px;right:10px;background:rgba(0,0,0,.5);font-size:.66rem;padding:3px 8px;border-radius:6px}
.battle-card .versus{display:flex;align-items:center;gap:6px;font-weight:800;font-size:.82rem;margin-bottom:4px}
.battle-card .versus .h{color:var(--host)}.battle-card .versus .g{color:var(--guest)}
.battle-card .bt{font-size:.74rem;color:var(--muted)}
.empty{text-align:center;color:var(--muted);padding:50px 20px}
.empty i{font-size:2.6rem;margin-bottom:14px;display:block;color:var(--line)}
.empty p{margin-bottom:16px}

/* SHOP */
.wallet-card{display:flex;justify-content:space-between;margin-bottom:16px}
.big-coins{font-size:1.8rem;font-weight:900;color:var(--gold)}
.big-earn{font-size:1.3rem;font-weight:800}
.pack-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.pack{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;text-align:center;cursor:pointer;position:relative}
.pack .pc{font-size:1.5rem;font-weight:900;color:var(--gold)}
.pack .pc i{font-size:1.1rem}
.pack .bonus{position:absolute;top:8px;right:8px;background:var(--host);font-size:.62rem;font-weight:800;padding:2px 7px;border-radius:6px;color:#fff}
.pack .pp{margin-top:8px;font-weight:800;font-size:1.05rem}
.pack .pl{font-size:.74rem;color:var(--muted)}
.payout-card{margin-top:4px}

/* BATTLE ROOM */
.battle-room{position:fixed;inset:0;max-width:560px;margin:0 auto;background:#000;display:flex;flex-direction:column;z-index:40}
.arena{flex:1;display:flex;position:relative;min-height:0}
.side{flex:1;position:relative;overflow:hidden}
.side video{width:100%;height:100%;object-fit:cover;background:#0a0a0a}
.side-host{box-shadow:inset 0 0 80px rgba(255,45,111,.35)}
.side-guest{box-shadow:inset 0 0 80px rgba(31,209,255,.35)}
.side-tag{position:absolute;bottom:10px;left:10px;background:rgba(0,0,0,.55);padding:5px 10px;border-radius:8px;font-size:.8rem;font-weight:700;max-width:46%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-host .side-tag i{color:var(--host)}.side-guest .side-tag i{color:var(--guest)}
.side-score{position:absolute;top:10px;font-weight:900;font-size:1.1rem;padding:3px 10px;border-radius:8px;background:rgba(0,0,0,.5)}
.side-host .side-score{right:10px;color:var(--host)}
.side-guest .side-score{left:10px;color:var(--guest)}
.vs-badge{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:5;width:46px;height:46px;border-radius:50%;
  background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:.9rem;box-shadow:0 0 0 4px #000}

.tugbar{height:8px;background:var(--guest);position:relative}
.tug-fill{height:100%;width:50%;background:var(--host);transition:width .5s cubic-bezier(.2,.8,.2,1)}
.tug-mid{position:absolute;top:-3px;left:50%;width:2px;height:14px;background:#fff;transform:translateX(-50%)}

.battle-hud{display:flex;justify-content:space-between;align-items:center;padding:8px 14px;background:#0d0b14;font-weight:700;font-size:.85rem}
.hud-left i{color:var(--muted)}
.hud-timer{font-variant-numeric:tabular-nums;font-weight:900;font-size:1.05rem}
.hud-right{text-transform:uppercase;font-size:.7rem;letter-spacing:1px;color:var(--gold)}

.lobby-box{padding:14px;text-align:center;background:#0d0b14;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px;align-items:center}
.lobby-box:empty,.lobby-box[hidden]{display:none}

.gift-feed{position:absolute;bottom:130px;left:0;right:0;pointer-events:none;display:flex;flex-direction:column;gap:6px;padding:0 12px;z-index:8}
.gift-pop{align-self:flex-start;background:rgba(0,0,0,.6);border:1px solid var(--line);border-radius:12px;padding:6px 12px;
  display:flex;align-items:center;gap:8px;font-weight:700;font-size:.85rem;animation:pop .4s ease,fade .5s 2.5s forwards}
.gift-pop i{font-size:1.3rem;color:var(--gold)}
.gift-pop.to-host{border-color:var(--host)}.gift-pop.to-guest{border-color:var(--guest)}
@keyframes pop{from{transform:scale(.6) translateY(10px);opacity:0}to{transform:scale(1);opacity:1}}
@keyframes fade{to{opacity:0;transform:translateY(-10px)}}
.fly{position:fixed;z-index:50;font-size:2.4rem;color:var(--gold);pointer-events:none;animation:fly 1.1s ease forwards}
@keyframes fly{0%{transform:translateY(0) scale(.4);opacity:0}20%{opacity:1;transform:scale(1.3)}100%{transform:translateY(-220px) scale(.8);opacity:0}}

.battle-bottom{background:#0d0b14;border-top:1px solid var(--line)}
.chat{max-height:120px;overflow-y:auto;padding:8px 12px;display:flex;flex-direction:column;gap:4px}
.chat-msg{font-size:.84rem;line-height:1.3}
.chat-msg b{color:var(--guest);margin-right:5px}
.chat-msg.sys{color:var(--muted);font-style:italic}
.chat-form{display:flex;gap:8px;padding:8px 12px calc(8px + env(safe-area-inset-bottom))}
.chat-form input{flex:1;background:#1b1626;border:1px solid var(--line);border-radius:999px;padding:11px 16px;color:var(--txt);outline:none}
.btn-gift,.btn-send{width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;font-size:1.05rem;color:#fff;flex:none}
.btn-gift{background:linear-gradient(135deg,var(--gold),#ff9d00);color:#231a00}
.btn-send{background:var(--grad)}

.gift-tray{position:absolute;bottom:0;left:0;right:0;background:#15111f;border-top:1px solid var(--line);
  border-radius:20px 20px 0 0;padding:14px 14px calc(14px + env(safe-area-inset-bottom));z-index:20;animation:slideup .25s ease}
@keyframes slideup{from{transform:translateY(100%)}to{transform:translateY(0)}}
.tray-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;font-weight:700}
.tray-target{display:flex;gap:6px;background:#120e1c;border-radius:9px;padding:3px}
.tgt{background:none;border:none;color:var(--muted);padding:6px 14px;border-radius:7px;font-weight:700;cursor:pointer;font-size:.82rem}
.tgt.active[data-target=host]{background:var(--host);color:#fff}
.tgt.active[data-target=guest]{background:var(--guest);color:#06222b}
.tray-close{background:none;border:none;color:var(--muted);font-size:1.2rem;cursor:pointer}
.gift-list{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.gift-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 6px;text-align:center;cursor:pointer;transition:transform .08s}
.gift-item:active{transform:scale(.92)}
.gift-item i{font-size:1.6rem;color:var(--gold);display:block;margin-bottom:6px}
.gift-item .gn{font-size:.66rem;color:var(--muted)}
.gift-item .gc{font-size:.78rem;font-weight:800;color:var(--gold)}
.tray-foot{text-align:center;margin-top:12px;color:var(--muted);font-size:.85rem}
.tray-foot a{color:var(--gold);font-weight:700}

/* TOAST */
.toast{position:fixed;bottom:90px;left:50%;transform:translateX(-50%);background:#231a33;border:1px solid var(--line);
  color:var(--txt);padding:12px 20px;border-radius:12px;z-index:100;font-weight:600;font-size:.9rem;max-width:90%;text-align:center}
.toast.err{border-color:var(--err)}
.toast.ok{border-color:var(--ok)}

.winner-overlay{position:absolute;inset:0;background:rgba(0,0,0,.86);z-index:60;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:14px;text-align:center;padding:20px}
.winner-overlay .crown{font-size:3.4rem;color:var(--gold);animation:pop .5s ease}
.winner-overlay h2{font-size:1.8rem}