:root{
  --mc-primary:#d94f4a;
  --mc-primary-strong:#c74440;
  --mc-primary-soft:rgba(217,79,74,.12);
  --mc-bg:#ffffff;
  --mc-surface:#f5f5f7;
  --mc-surface-2:#fbfbfd;
  --mc-text:#111111;
  --mc-text-muted:#6e6e73;
  --mc-border:rgba(17,17,17,.08);
  --mc-border-strong:rgba(17,17,17,.12);
  --mc-shadow:0 18px 60px rgba(15,23,42,.14), 0 2px 10px rgba(15,23,42,.06);
  --mc-radius-xl:28px;
  --mc-radius-lg:22px;
  --mc-radius-md:18px;
  --mc-radius-sm:14px;
  --mc-font:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mc-ease:cubic-bezier(.2,.8,.2,1);
}

*{box-sizing:border-box}

@keyframes mc-pulse{
  0%{box-shadow:0 22px 45px rgba(217,79,74,.22), 0 10px 22px rgba(0,0,0,.12), 0 0 0 0 rgba(217,79,74,.5)}
  70%{box-shadow:0 22px 45px rgba(217,79,74,.22), 0 10px 22px rgba(0,0,0,.12), 0 0 0 18px rgba(217,79,74,0)}
  100%{box-shadow:0 22px 45px rgba(217,79,74,.22), 0 10px 22px rgba(0,0,0,.12), 0 0 0 0 rgba(217,79,74,0)}
}

#mc-launcher{
  position:fixed;
  right:max(20px, env(safe-area-inset-right));
  bottom:max(20px, env(safe-area-inset-bottom));
  width:78px;
  height:78px;
  border-radius:999px;
  border:none;
  background:linear-gradient(180deg,var(--mc-primary) 0%, var(--mc-primary-strong) 100%);
  box-shadow:0 22px 45px rgba(217,79,74,.22), 0 10px 22px rgba(0,0,0,.12);
  cursor:pointer;
  z-index:2147483000;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:transform .22s var(--mc-ease), box-shadow .22s var(--mc-ease), opacity .18s ease;
  -webkit-tap-highlight-color:transparent;
  animation:mc-pulse 2.2s ease-out 1.5s 3;
}
#mc-launcher:hover{transform:translateY(-1px) scale(1.015); animation:none}
#mc-launcher:active{transform:scale(.97)}
#mc-launcher svg{width:31px;height:31px;fill:#fff}

#mc-panel{
  position:fixed;
  right:max(20px, env(safe-area-inset-right));
  bottom:calc(max(20px, env(safe-area-inset-bottom)) + 94px);
  width:min(420px, calc(100vw - 40px));
  height:min(760px, calc(100dvh - 132px));
  max-height:calc(100dvh - 132px);
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(24px) saturate(1.35);
  -webkit-backdrop-filter:blur(24px) saturate(1.35);
  border:1px solid rgba(255,255,255,.75);
  border-radius:var(--mc-radius-xl);
  box-shadow:var(--mc-shadow);
  z-index:2147483000;
  overflow:hidden;
  display:none;
  flex-direction:column;
  color:var(--mc-text);
}

#mc-panel::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg, rgba(255,255,255,.55) 0%, rgba(255,255,255,0) 22%);
}

#mc-header{
  position:relative;
  background:transparent;
  color:var(--mc-text);
  padding:18px 18px 10px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-family:var(--mc-font);
}
#mc-title{
  font-weight:650;
  letter-spacing:-.02em;
  font-size:17px;
}
#mc-minimize{
  width:34px;
  height:34px;
  border:none;
  background:rgba(0,0,0,.05);
  color:#3a3a3c;
  border-radius:999px;
  cursor:pointer;
  font-size:18px;
  line-height:1;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background .18s var(--mc-ease), transform .18s var(--mc-ease);
}
#mc-minimize:hover{background:rgba(0,0,0,.09)}
#mc-minimize:active{transform:scale(.96)}

#mc-body{
  position:relative;
  flex:1;
  min-height:0;
  overflow-x:hidden;
  overflow-y:auto;
  padding:10px 18px 18px;
  font-family:var(--mc-font);
  background:linear-gradient(180deg, var(--mc-surface-2) 0%, var(--mc-surface) 100%);
  display:flex;
  flex-direction:column;
  gap:12px;
  scroll-behavior:smooth;
}
#mc-body::-webkit-scrollbar,
#mc-quick::-webkit-scrollbar{width:8px}
#mc-body::-webkit-scrollbar-thumb,
#mc-quick::-webkit-scrollbar-thumb{background:rgba(60,60,67,.18);border-radius:999px}

.mc-bubble{
  max-width:88%;
  padding:15px 18px;
  border-radius:22px;
  font-size:16px;
  line-height:1.42;
  border:1px solid var(--mc-border);
  background:rgba(255,255,255,.84);
  color:var(--mc-text);
  white-space:pre-wrap;
  box-shadow:0 6px 18px rgba(17,17,17,.045);
  margin:0;
  letter-spacing:-.015em;
}
.mc-bot{
  align-self:flex-start;
  border-top-left-radius:12px;
}
.mc-user{
  align-self:flex-end;
  margin-left:auto;
  background:linear-gradient(180deg, #fff6f5 0%, #fff 100%);
  border-color:rgba(217,79,74,.28);
  color:#38100e;
  border-top-right-radius:12px;
}

#mc-quick{
  padding:0 18px 16px;
  border-top:none;
  background:var(--mc-surface);
  display:none;
  overflow-y:auto;
  flex-shrink:0;
  max-height:45%;
}
#mc-quick.has-replies{
  display:block;
}
.mc-qr{
  display:block;
  width:100%;
  text-align:center;
  border:none;
  background:linear-gradient(180deg,var(--mc-primary) 0%, var(--mc-primary-strong) 100%);
  color:#fff;
  padding:17px 18px;
  border-radius:20px;
  cursor:pointer;
  margin:12px 0 0;
  font-family:var(--mc-font);
  font-size:17px;
  font-weight:650;
  letter-spacing:-.02em;
  box-shadow:0 8px 20px rgba(217,79,74,.18);
  transition:transform .18s var(--mc-ease), box-shadow .18s var(--mc-ease), filter .18s var(--mc-ease), opacity .18s ease;
  -webkit-tap-highlight-color:transparent;
}
.mc-qr:hover{transform:translateY(-1px);filter:saturate(1.02)}
.mc-qr:active{transform:scale(.985)}
.mc-qr:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}

#mc-inputbar{
  min-height:72px;
  flex-shrink:0;
  border-top:1px solid var(--mc-border);
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  display:flex;
  gap:12px;
  align-items:center;
  padding:14px 18px calc(14px + env(safe-area-inset-bottom));
}
#mc-input{
  flex:1;
  border:1px solid var(--mc-border-strong);
  border-radius:20px;
  min-height:54px;
  padding:0 18px;
  font-family:var(--mc-font);
  font-size:16px;
  background:rgba(255,255,255,.92);
  color:var(--mc-text);
  outline:none;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4);
  transition:border-color .18s var(--mc-ease), box-shadow .18s var(--mc-ease), background .18s var(--mc-ease);
}
#mc-input::placeholder{color:#a1a1a6}
#mc-input:focus{
  border-color:rgba(217,79,74,.38);
  box-shadow:0 0 0 4px rgba(217,79,74,.12);
  background:#fff;
}
#mc-send,
#mc-upload-label{
  width:56px;
  height:56px;
  border-radius:20px;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:transform .18s var(--mc-ease), box-shadow .18s var(--mc-ease), background .18s var(--mc-ease), border-color .18s var(--mc-ease);
  -webkit-tap-highlight-color:transparent;
}
#mc-send{
  border:none;
  background:linear-gradient(180deg,var(--mc-primary) 0%, var(--mc-primary-strong) 100%);
  cursor:pointer;
  box-shadow:0 10px 22px rgba(217,79,74,.2);
}
#mc-send:hover{transform:translateY(-1px)}
#mc-send:active{transform:scale(.97)}
#mc-send:disabled{opacity:.55;cursor:not-allowed;box-shadow:none}
#mc-send svg{width:24px;height:24px;fill:#fff}

#mc-upload{display:none}
#mc-upload-label{
  border:1px solid var(--mc-border-strong);
  background:rgba(255,255,255,.92);
  cursor:pointer;
  box-shadow:0 4px 14px rgba(17,17,17,.045);
}
#mc-upload-label:hover{transform:translateY(-1px);background:#fff}
#mc-upload-label:active{transform:scale(.97)}
#mc-upload-label svg{width:24px;height:24px;fill:#111827}

@media (max-width: 900px){
  #mc-panel{
    width:min(420px, calc(100vw - 24px));
    height:min(78dvh, 760px);
    right:max(12px, env(safe-area-inset-right));
    bottom:calc(max(12px, env(safe-area-inset-bottom)) + 88px);
  }
  #mc-launcher{
    right:max(12px, env(safe-area-inset-right));
    bottom:calc(max(72px, env(safe-area-inset-bottom)) + 12px);
    width:72px;
    height:72px;
  }
}

@media (max-width: 640px){
  #mc-panel{
    right:8px;
    left:8px;
    width:auto;
    bottom:8px;
    height:calc(100dvh - 16px - env(safe-area-inset-bottom));
    max-height:none;
    border-radius:26px;
  }
  #mc-launcher{
    width:70px;
    height:70px;
    right:12px;
    bottom:calc(12px + env(safe-area-inset-bottom));
  }
  #mc-header{padding:16px 16px 8px}
  #mc-body{padding:8px 16px 16px;}
  #mc-quick{padding:0 16px 14px}
  #mc-inputbar{padding:12px 16px calc(12px + env(safe-area-inset-bottom)); gap:10px}
  .mc-bubble{max-width:92%; font-size:15px; padding:14px 16px}
  .mc-qr{font-size:16px; padding:16px}
  #mc-input{font-size:16px; min-height:52px}
}

@media (max-width: 420px){
  #mc-panel{
    inset:0;
    width:100vw;
    height:100dvh;
    border-radius:0;
    bottom:auto;
    right:auto;
    left:auto;
    border:none;
  }
  #mc-header{padding:14px 14px 8px}
  #mc-title{font-size:16px}
  #mc-body{padding:8px 14px 14px; gap:10px;}
  #mc-quick{padding:0 14px 12px}
  #mc-inputbar{padding:10px 14px calc(10px + env(safe-area-inset-bottom));}
  #mc-launcher{
    width:66px;
    height:66px;
    right:12px;
    bottom:calc(12px + env(safe-area-inset-bottom));
  }
  #mc-send,
  #mc-upload-label{width:52px;height:52px;border-radius:18px}
}