/* ---------- chatbot widget ---------- */
.ethchat-toggle{position:fixed;right:calc(20px + env(safe-area-inset-right,0px));bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:1000;width:56px;height:56px;border-radius:50%;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--blue2,#388bfd),var(--purple,#bc8cff));box-shadow:0 8px 24px rgba(56,139,253,.35);transition:transform .2s,box-shadow .2s}
.ethchat-toggle:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(56,139,253,.45)}
.ethchat-toggle[aria-expanded="true"]{display:none}
.ethchat-bubble{display:flex;align-items:center;justify-content:center;color:#0d1117}
.ethchat-badge{position:absolute;top:-4px;right:-4px;min-width:20px;height:20px;border-radius:50%;background:var(--red,#f85149);color:#fff;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;border:2px solid var(--bg,#0d1117);box-shadow:0 2px 8px rgba(248,81,73,.5)}
.ethchat-toggle.attention{animation:ethchatAttn 1.6s ease-in-out infinite;will-change:transform,box-shadow}
@keyframes ethchatAttn{
  0%,100%{transform:translateY(0);box-shadow:0 8px 24px rgba(56,139,253,.35)}
  25%{transform:translateY(-4px);box-shadow:0 0 0 6px rgba(248,81,73,.35),0 8px 24px rgba(56,139,253,.35)}
  50%{transform:translateY(0);box-shadow:0 0 0 6px rgba(248,81,73,.28),0 8px 24px rgba(56,139,253,.35)}
  75%{transform:translateY(-2px);box-shadow:0 0 0 6px rgba(248,81,73,.35),0 8px 24px rgba(56,139,253,.35)}
}
.ethchat-toggle.seen{animation:none}
.ethchat-toggle.seen .ethchat-badge{display:none}

#ethchat-wrap{position:fixed;right:20px;bottom:calc(88px + env(safe-area-inset-bottom,0px));z-index:1000;display:none;width:min(400px,calc(100vw - 32px))}
#ethchat-wrap.open{display:block;animation:ethchatIn .18s ease}
@keyframes ethchatIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

.ethchat{background:var(--bg2,#0f141b);border:1px solid var(--line2,#30363d);border-radius:16px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.5);display:flex;flex-direction:column;max-height:min(560px,calc(100vh - 140px));max-height:min(560px,calc(100dvh - 140px))}
.ethchat-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line,#232a33);background:linear-gradient(180deg,var(--card,#161b22),rgba(13,17,23,.6))}
.ethchat-title{font-size:14px;font-weight:700;color:var(--fg,#e6edf3);display:flex;align-items:center;gap:8px}
.ethchat-dot{width:8px;height:8px;border-radius:50%;background:var(--green,#3fb950);box-shadow:0 0 8px rgba(63,185,80,.6)}
.ethchat-close{background:transparent;border:none;color:var(--dim,#8b949e);font-size:22px;line-height:1;cursor:pointer;padding:0 2px}
.ethchat-close:hover{color:var(--fg,#e6edf3)}

.ethchat-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}
.chat-msg{max-width:82%;padding:10px 13px;border-radius:14px;font-size:13.5px;line-height:1.5;white-space:pre-wrap;word-break:break-word;color:var(--fg,#e6edf3)}
.chat-msg.bot{background:var(--card,#161b22);border:1px solid var(--line,#232a33);align-self:flex-start;border-bottom-left-radius:4px}
.chat-msg.user{background:linear-gradient(135deg,var(--blue2,#388bfd),var(--blue,#58a6ff));color:#0d1117;align-self:flex-end;border-bottom-right-radius:4px;font-weight:500}
.chat-link{display:inline-block;margin-top:10px;color:var(--blue,#58a6ff);font-weight:600;text-decoration:none}
.chat-link:hover{text-decoration:underline}
.chat-code{margin-top:10px;font-family:var(--mono,monospace);font-size:12.5px;color:var(--blue,#58a6ff);background:rgba(88,166,255,.1);border:1px solid rgba(88,166,255,.25);padding:6px 10px;border-radius:8px;word-break:break-all;white-space:pre}
.chat-msg.user .chat-code{color:#0d1117;background:rgba(0,0,0,.08);border-color:rgba(0,0,0,.15)}

.chat-chips{display:flex;flex-wrap:wrap;gap:8px;align-self:flex-start}
.chat-chip{background:transparent;border:1px solid var(--line2,#30363d);color:var(--dim,#8b949e);font-family:var(--font,inherit);font-size:12.5px;font-weight:600;padding:7px 12px;border-radius:999px;cursor:pointer;transition:border .2s,color .2s,background .2s}
.chat-chip:hover{color:var(--fg,#e6edf3);border-color:var(--blue,#58a6ff);background:rgba(88,166,255,.08)}

.ethchat-input{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line,#232a33);background:var(--bg2,#0f141b)}
.ethchat-input input{flex:1;background:var(--bg,#0d1117);border:1px solid var(--line2,#30363d);border-radius:10px;padding:11px 13px;color:var(--fg,#e6edf3);font-size:14px;font-family:var(--font,inherit)}
.ethchat-input input:focus{outline:none;border-color:var(--blue,#58a6ff)}
.ethchat-send{width:44px;height:44px;border-radius:10px;border:none;background:linear-gradient(135deg,var(--blue2,#388bfd),var(--blue,#58a6ff));color:#0d1117;font-size:16px;cursor:pointer;flex-shrink:0}
.ethchat-send:hover{filter:brightness(1.1)}

@media(max-width:720px){
  .ethchat-toggle{right:calc(16px + env(safe-area-inset-right,0px));bottom:calc(16px + env(safe-area-inset-bottom,0px));width:52px;height:52px}
  #ethchat-wrap{right:12px;bottom:calc(76px + env(safe-area-inset-bottom,0px));width:calc(100vw - 24px)}
}