:root{--wc-bg:rgba(10,10,10,.98);--wc-fg:var(--fg,#fff);--wc-muted:var(--muted,#d4af37);--wc-accent:var(--accent,#ffd700);--wc-border:rgba(255,255,255,.08)}
.wc-wrap{position:fixed;right:16px;bottom:16px;z-index:10002;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,Noto Sans,Helvetica Neue}
.wc-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);opacity:0;pointer-events:none;transition:opacity .18s ease;z-index:10000}
.wc-mask.show{opacity:1;pointer-events:auto}
.wc-btn{height:48px;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));color:var(--wc-fg);box-shadow:0 10px 28px rgba(0,0,0,.42),inset 0 1px 0 rgba(255,255,255,.08);cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;padding:0 14px 0 12px;position:relative;transition:transform .12s ease,box-shadow .2s ease,background .2s ease}
.wc-btn:focus{outline:2px solid var(--wc-accent);outline-offset:2px}
.wc-btn:hover{transform:translateY(-1px);box-shadow:0 14px 34px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.1);background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.03))}
.wc-btn:active{transform:translateY(0)}
.wc-label{font-weight:800;letter-spacing:.03em}
.wc-icon{width:18px;height:18px;display:block;color:var(--wc-accent)}
.wc-badge{position:absolute;top:-6px;right:-6px;min-width:18px;height:18px;border-radius:999px;background:var(--wc-accent);color:#000;display:none;align-items:center;justify-content:center;font-size:12px;font-weight:800;box-shadow:0 4px 12px rgba(0,0,0,.4);padding:0 4px}
.wc-btn.has-unread::after{content:"";position:absolute;inset:-6px;border-radius:999px;border:2px solid var(--wc-accent);opacity:.35;animation:wcRing 1.4s cubic-bezier(.2,.8,.2,1) infinite}
.wc-btn.has-unread .wc-badge{display:flex}
@keyframes wcRing{0%{transform:scale(.9);opacity:.45}100%{transform:scale(1.18);opacity:0}}
.wc-btn.has-unread .wc-badge{display:flex}
.wc-panel{position:fixed;right:16px;bottom:92px;width:min(92vw,420px);background:var(--wc-bg);color:var(--wc-fg);border-radius:18px;border:1px solid var(--wc-border);box-shadow:0 20px 56px rgba(0,0,0,.6);display:flex;flex-direction:column;overflow:hidden;backdrop-filter:blur(10px);opacity:0;transform:translateY(6px) scale(.98);pointer-events:none;height:0;transition:opacity .18s ease,transform .18s ease,height .18s ease;overscroll-behavior:contain;z-index:10001}
.wc-panel.drag{transition:none}
.wc-panel.show{opacity:1;transform:translateY(0) scale(1);pointer-events:auto;height:min(76vh,640px)}
.wc-head{display:flex;align-items:center;justify-content:flex-start;gap:8px;padding:8px 14px;background:rgba(255,255,255,.03);border-bottom:1px solid var(--wc-border)}
.wc-title{font-weight:900;letter-spacing:.04em}
.wc-pres{display:flex;align-items:center;gap:8px;margin-left:6px}
.wc-pres-dot{width:10px;height:10px;border-radius:999px;background:#9ca3af;position:relative;box-shadow:0 0 0 0 rgba(156,163,175,.5);animation:wcPulse 1.6s ease-out infinite}
.wc-pres-dot.is-online{background:#3ba55c;box-shadow:0 0 0 0 rgba(59,165,92,.5)}
.wc-pres-dot.is-idle{background:#f0b232;box-shadow:0 0 0 0 rgba(240,178,50,.5)}
.wc-pres-dot.is-offline{background:#6b7280;box-shadow:0 0 0 0 rgba(107,114,128,.5)}
.wc-pres-text{font-size:12px;color:rgba(255,255,255,.8)}
@keyframes wcPulse{0%{box-shadow:0 0 0 0 rgba(255,255,255,.0)}70%{box-shadow:0 0 0 6px rgba(255,255,255,.0)}100%{box-shadow:0 0 0 0 rgba(255,255,255,.0)}}
.wc-close{margin-left:auto;background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.12);color:#fff;width:32px;height:32px;border-radius:10px;cursor:pointer}
.wc-close:focus{outline:2px solid var(--wc-accent);outline-offset:2px}
.wc-feed{flex:1;overflow:auto;padding:16px;display:flex;flex-direction:column;align-items:flex-start;gap:12px;scrollbar-width:thin;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;touch-action:pan-y}
.wc-feed{background:radial-gradient(120% 80% at 10% 0%,rgba(255,215,0,.03),transparent 60%),radial-gradient(120% 80% at 90% 100%,rgba(255,215,0,.02),transparent 60%)}
.wc-msg{max-width:86%;padding:8px 12px;border-radius:18px;font-size:15px;line-height:1.4;word-wrap:break-word;white-space:pre-wrap;display:inline-block;position:relative;transform:translateY(6px) scale(.98);opacity:0}
.wc-msg.wc-cont{margin-top:4px}
.wc-me{align-self:flex-end;background:linear-gradient(160deg,rgba(255,215,0,.18),rgba(255,215,0,.1));border:1px solid rgba(255,215,0,.35);color:#fff;box-shadow:0 10px 26px rgba(255,215,0,.12),inset 0 1px 0 rgba(255,255,255,.05)}
.wc-them{align-self:flex-start;background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.04));border:1px solid rgba(255,255,255,.12);color:#fff;box-shadow:0 10px 26px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.03)}
.wc-in-me{animation:wcPopMe .18s cubic-bezier(.2,.8,.2,1) forwards}
.wc-in-them{animation:wcPopThem .22s cubic-bezier(.2,.8,.2,1) forwards}
@keyframes wcPopMe{0%{transform:translateY(8px) translateX(6px) scale(.96);opacity:0}100%{transform:translateY(0) translateX(0) scale(1);opacity:1}}
@keyframes wcPopThem{0%{transform:translateY(8px) translateX(-6px) scale(.96);opacity:0}100%{transform:translateY(0) translateX(0) scale(1);opacity:1}}
.wc-footer{display:flex;gap:10px;padding:12px;border-top:1px solid var(--wc-border);background:rgba(255,255,255,.03);position:sticky;bottom:0;flex-wrap:wrap}
.wc-input{flex:1;background:rgba(255,255,255,.06);color:#fff;border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:14px 14px;font-size:16px}
.wc-send{background:linear-gradient(135deg,var(--wc-muted),var(--wc-accent));color:#000;border:none;border-radius:12px;padding:0 16px;font-weight:800;cursor:pointer;height:42px}
.wc-send{position:relative}
.wc-send:before{content:"";position:absolute;inset:0;border-radius:inherit;background:radial-gradient(120% 120% at 30% 20%,rgba(255,255,255,.25),transparent 40%);pointer-events:none;opacity:.8}
.wc-attach{width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));color:var(--wc-accent);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .12s ease,box-shadow .2s ease,background .2s ease}
.wc-attach:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.45);background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.03));color:#ffe37a}
.wc-attach:active{transform:translateY(0)}
.wc-attach .wc-attach-icon{width:36px;height:36px;display:block}
.wc-attach:focus{outline:2px solid var(--wc-accent);outline-offset:2px}
.wc-msg img.wc-img{display:block;max-width:100%;height:auto;border-radius:12px}
.wc-typing-bubble{display:none;opacity:0;transform:translateY(6px) scale(.98);transition:opacity .14s ease,transform .14s ease}
.wc-typing-bubble.show{display:block;opacity:1;transform:translateY(0) scale(1)}
.wc-dots{display:inline-flex;gap:5px;align-items:center}
.wc-dots span{width:6px;height:6px;border-radius:999px;background:var(--wc-accent);opacity:.6;animation:wcDots 1.2s ease-in-out infinite}
.wc-dots span:nth-child(2){animation-delay:.15s}
.wc-dots span:nth-child(3){animation-delay:.3s}
@keyframes wcDots{0%{transform:translateY(0);opacity:.4}50%{transform:translateY(-4px);opacity:1}100%{transform:translateY(0);opacity:.4}}
.wc-open .wc-wrap{display:none}
@media (max-width:720px){
  .wc-btn{height:52px}
}
@media (max-width:520px){
  .wc-wrap{right:12px;bottom:12px}
  .wc-label{display:none}
  .wc-btn{width:56px;height:56px;gap:0;padding:0}
  .wc-icon{width:20px;height:20px}
  .wc-panel{right:0;left:0;bottom:0;width:auto;border-radius:16px 16px 0 0;border-left:0;border-right:0;height:0}
  .wc-panel.show{height:min(88dvh,92vh)}
  .wc-footer{padding-bottom:12px;padding-bottom:calc(12px + env(safe-area-inset-bottom))}
}