@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&display=swap');

*{margin:0;padding:0;box-sizing:border-box}

:root{
  --night:    #00120B;
  --night-2:  #011a10;
  --night-3:  #021f14;
  --electric: #C200FB;
  --electric-dim: #9300bc;
  --electric-glow: rgba(194,0,251,0.18);
  --electric-glow-strong: rgba(194,0,251,0.35);
  --surf1: rgba(255,255,255,0.04);
  --surf2: rgba(255,255,255,0.08);
  --surf3: rgba(255,255,255,0.13);
  --text:  rgba(255,255,255,0.87);
  --text2: rgba(255,255,255,0.54);
  --text3: rgba(255,255,255,0.30);
  --div:   rgba(255,255,255,0.10);
  --green: #00e664;
  --r:     16px;
  --r-sm:  10px;
  --r-btn: 28px;
}

html,body{
  height:100%;
  width:100%;
  font-family:'Roboto',sans-serif;
  background:var(--night);
  display:flex;justify-content:center;align-items:center;
  overflow:hidden;
}

/* Ambient blue glow */
body::before{
  content:'';position:fixed;
  width:600px;height:600px;
  background:radial-gradient(circle,rgba(194,0,251,.18) 0%,transparent 65%);
  top:-160px;right:-160px;
  animation:drift1 14s infinite alternate;
  pointer-events:none;z-index:0
}
body::after{
  content:'';position:fixed;
  width:480px;height:480px;
  background:radial-gradient(circle,rgba(194,0,251,.10) 0%,transparent 65%);
  bottom:-140px;left:-120px;
  animation:drift2 18s infinite alternate;
  pointer-events:none;z-index:0
}
@keyframes drift1{to{transform:translate(-60px,80px)}}
@keyframes drift2{to{transform:translate(70px,-60px)}}

/* ── Chat container ─────────────────────────────────── */
.chat-wrap{
  position:relative;z-index:5;
  width:520px;
  height:min(900px,calc(100dvh - 32px));
  background:var(--night-2);
  border:1px solid var(--div);
  border-radius:24px;
  box-shadow:
    0 0 0 1px rgba(194,0,251,0.08),
    0 32px 80px rgba(0,0,0,0.7),
    0 0 40px var(--electric-glow);
  display:flex;flex-direction:column;overflow:hidden
}

/* ── Header ─────────────────────────────────────────── */
.header{
  display:flex;align-items:center;gap:12px;
  padding:16px 20px;
  background:linear-gradient(180deg,rgba(194,0,251,.07) 0%,transparent 100%);
  border-bottom:1px solid var(--div);
  flex-shrink:0;
  position:relative;overflow:hidden
}
.header::after{
  content:'';position:absolute;bottom:0;left:0;right:0;
  height:1px;
  background:linear-gradient(to right,transparent,rgba(194,0,251,.5),transparent)
}
.avatar{
  width:42px;height:42px;flex-shrink:0;
  background:linear-gradient(135deg,rgba(194,0,251,.20),rgba(194,0,251,.10));
  border:1px solid rgba(194,0,251,.30);
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 18px var(--electric-glow)
}
.avatar img{width:24px;height:24px;object-fit:contain;filter:brightness(0) invert(1)}
.hinfo{flex:1;min-width:0}
.hinfo h3{
  font-size:14px;font-weight:700;letter-spacing:.3px;
  background:linear-gradient(135deg,#fff 30%,#d580ff 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text
}
.hinfo small{
  font-size:11px;color:var(--text2);
  display:flex;align-items:center;gap:5px;margin-top:2px
}
.online{
  width:7px;height:7px;background:var(--green);
  border-radius:50%;
  box-shadow:0 0 8px var(--green);
  animation:pulse-green 2.4s infinite
}
@keyframes pulse-green{
  0%,100%{opacity:1;box-shadow:0 0 6px var(--green)}
  50%{opacity:.6;box-shadow:0 0 12px var(--green)}
}

/* ── Messages ───────────────────────────────────────── */
.msgs{
  flex:1;overflow-y:auto;
  padding:16px 14px;
  display:flex;flex-direction:column;gap:8px;
  background:var(--night);
  min-height:0
}
.msgs::-webkit-scrollbar{width:3px}
.msgs::-webkit-scrollbar-thumb{background:rgba(194,0,251,.25);border-radius:3px}

.msg{
  max-width:78%;padding:11px 15px;
  font-size:13.5px;line-height:1.65;
  animation:msgIn .18s ease;
  word-wrap:break-word;overflow-wrap:break-word
}
@keyframes msgIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

.msg .time{font-size:10px;margin-top:5px;opacity:.45;text-align:right}

/* User bubble — electric blue */
.user-msg{
  background:linear-gradient(135deg,#C200FB 0%,#9300bc 100%);
  color:#fff;
  align-self:flex-end;
  border-radius:var(--r) var(--r-sm) var(--r) var(--r);
  box-shadow:0 4px 20px rgba(194,0,251,.30)
}
.user-msg .time{color:rgba(255,255,255,.55)}

/* Bot bubble — glass dark */
.bot-msg{
  background:var(--surf2);
  border:1px solid var(--div);
  color:var(--text);
  align-self:flex-start;
  border-radius:var(--r-sm) var(--r) var(--r) var(--r);
}
.bot-msg .time{color:var(--text3)}

/* Escalation / warning */
.warn-msg{
  background:rgba(255,107,107,.08);
  border:1px solid rgba(255,107,107,.18);
  border-left:3px solid #ff6b6b;
  color:#ffb3b3;
  align-self:flex-start;
  border-radius:var(--r-sm) var(--r) var(--r) var(--r)
}
.warn-msg .time{color:rgba(255,255,255,.25)}

/* Out-of-scope */
.info-msg{
  background:rgba(194,0,251,.06);
  border:1px solid rgba(194,0,251,.16);
  border-left:3px solid rgba(194,0,251,.5);
  color:var(--text2);
  align-self:flex-start;
  border-radius:var(--r-sm) var(--r) var(--r) var(--r)
}
.info-msg .time{color:var(--text3)}

/* Day / date chip */
.day{
  align-self:center;
  font-size:10.5px;color:var(--text2);letter-spacing:.5px;text-transform:uppercase;
  background:var(--surf1);border:1px solid var(--div);
  padding:3px 12px;border-radius:20px
}

/* Session separator */
.session-label{
  display:flex;align-items:center;align-self:stretch;
  margin:10px 0 2px;
  font-size:10px;color:rgba(194,0,251,.6);
  text-transform:uppercase;letter-spacing:.8px
}
.session-label::before,.session-label::after{
  content:'';flex:1;height:1px;
  background:linear-gradient(to right,transparent,rgba(194,0,251,.22),transparent)
}
.session-label span{padding:0 10px;white-space:nowrap}

/* Typing indicator */
.typing{
  background:var(--surf2);border:1px solid var(--div);
  align-self:flex-start;
  border-radius:var(--r-sm) var(--r) var(--r) var(--r);
  padding:13px 18px;display:flex;gap:5px
}
.dot{
  width:7px;height:7px;background:rgba(194,0,251,.7);
  border-radius:50%;display:inline-block;
  animation:bounce 1.3s infinite
}
.dot:nth-child(2){animation-delay:.18s}
.dot:nth-child(3){animation-delay:.36s}
@keyframes bounce{0%,60%,100%{transform:translateY(0)}30%{transform:translateY(-6px)}}

/* Links in messages */
.msg a{color:#d580ff;text-decoration:underline;word-break:break-all}
.msg a:hover{color:#e8a8ff}
.msg strong{color:#fff;font-weight:600}

/* ── Input bar ──────────────────────────────────────── */
.ibar{
  display:flex;gap:10px;align-items:center;
  padding:12px 14px;
  background:linear-gradient(0deg,rgba(194,0,251,.04),transparent);
  border-top:1px solid var(--div);
  flex-shrink:0
}
.ibar input{
  flex:1;
  padding:11px 16px;
  background:var(--surf1);
  border:1px solid var(--div);
  border-radius:var(--r-btn);
  font-size:13.5px;font-family:'Roboto',sans-serif;
  color:var(--text);outline:none;
  transition:border-color .2s,box-shadow .2s
}
.ibar input::placeholder{color:var(--text3)}
.ibar input:focus{
  border-color:rgba(194,0,251,.5);
  box-shadow:0 0 0 3px var(--electric-glow),0 0 16px var(--electric-glow)
}
.sbtn{
  width:42px;height:42px;flex-shrink:0;
  background:linear-gradient(135deg,#C200FB,#9300bc);
  border:none;border-radius:50%;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 16px rgba(194,0,251,.40);
  transition:transform .15s,box-shadow .15s
}
.sbtn:hover{transform:scale(1.08);box-shadow:0 6px 24px rgba(194,0,251,.60)}
.sbtn svg{fill:#fff;width:18px;height:18px}

/* ── End chat bar ───────────────────────────────────── */
.end-chat-bar{
  padding:8px 14px;
  background:var(--night-2);
  border-top:1px solid var(--div);
  display:none;justify-content:center;align-items:center;
  flex-shrink:0
}
.end-chat-bar.show{display:flex}
.end-btn{
  background:var(--surf1);
  border:1px solid rgba(194,0,251,.28);
  color:rgba(0,136,255,.85);
  padding:7px 28px;border-radius:var(--r-btn);
  cursor:pointer;font-size:12px;font-weight:500;letter-spacing:.4px;
  display:flex;align-items:center;gap:7px;
  transition:.2s;
  font-family:'Roboto',sans-serif
}
.end-btn svg{width:13px;height:13px;fill:none;stroke:rgba(0,136,255,.85);stroke-width:2.5;stroke-linecap:round}
.end-btn:hover{
  background:rgba(194,0,251,.10);
  border-color:rgba(194,0,251,.55);
  color:#d580ff;
  box-shadow:0 0 14px var(--electric-glow)
}
.end-btn:hover svg{stroke:#d580ff}

/* ── Powered by ─────────────────────────────────────── */
.poweredby{
  text-align:center;font-size:11px;font-weight:500;letter-spacing:.4px;
  color:rgba(194,0,251,.55);
  padding:6px;
  background:rgba(0,0,0,.25);
  border-top:1px solid var(--div);
  flex-shrink:0
}

/* ── Responsive ─────────────────────────────────────── */
@media(max-width:900px) and (min-width:641px){
  .chat-wrap{width:calc(100% - 40px);max-height:calc(100dvh - 40px)}
}
@media(max-width:640px){
  body{display:block}
  body::before,body::after{display:none}
  .chat-wrap{
    position:fixed;
    top:0;left:0;right:0;bottom:0;
    width:100%;height:100%;
    max-height:none;border-radius:0;
    border:none
  }
  .header{padding:12px 14px}
  .msgs{padding:10px}
  .msg{max-width:90%;font-size:13px}
  .ibar input{font-size:16px}
  .ibar{padding:10px 12px;padding-bottom:calc(10px + env(safe-area-inset-bottom,0px))}
  .end-chat-bar{padding-bottom:calc(8px + env(safe-area-inset-bottom,0px))}
  .poweredby{padding-bottom:calc(6px + env(safe-area-inset-bottom,0px))}
}