/* Paste your AI-generated CSS here */
:root{
  --bg:#04050e;
  --panel:rgba(13,16,38,.82);
  --cyan:#00f0ff;
  --purple:#a855f7;
  --pink:#ff2fd6;
  --green:#39ff88;
  --text:#e8edff;
  --muted:#8b93b8;
  --border:rgba(0,240,255,.22);
  --danger:#ff4d6d;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Rajdhani',sans-serif;
  overflow:hidden;
}
.hidden{display:none!important}

/* ---------- background fx ---------- */
.orbs{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(110px);opacity:.35;animation:float 14s ease-in-out infinite}
.o1{width:420px;height:420px;background:var(--cyan);top:-120px;left:-100px}
.o2{width:380px;height:380px;background:var(--purple);bottom:-140px;right:-80px;animation-delay:-5s}
.o3{width:260px;height:260px;background:var(--pink);top:40%;left:55%;animation-delay:-9s;opacity:.22}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-40px) scale(1.08)}}
.grid-overlay{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(0,240,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(0,240,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(ellipse at center,black 30%,transparent 75%);
}

/* ---------- shared ---------- */
.logo-hex{
  width:74px;height:82px;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;
  font-family:'Orbitron';font-weight:900;font-size:38px;color:#04050e;
  background:linear-gradient(135deg,var(--cyan),var(--purple));
  clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);
  box-shadow:0 0 30px rgba(0,240,255,.6);
  animation:hexpulse 3s ease-in-out infinite;
}
.logo-hex.small{width:40px;height:45px;font-size:20px;margin:0;animation:none}
@keyframes hexpulse{0%,100%{box-shadow:0 0 20px rgba(0,240,255,.5)}50%{box-shadow:0 0 45px rgba(168,85,247,.8)}}
.logo-title{font-family:'Orbitron';font-size:30px;letter-spacing:3px;text-align:center}
.logo-title span{background:linear-gradient(90deg,var(--cyan),var(--purple),var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent}
.logo-sub{text-align:center;letter-spacing:6px;color:var(--muted);font-weight:600;margin:4px 0 18px;font-size:13px}

.btn-neon{
  font-family:'Orbitron';font-weight:700;letter-spacing:2px;color:#04050e;border:none;cursor:pointer;
  background:linear-gradient(90deg,var(--cyan),var(--purple));
  padding:13px 22px;font-size:14px;position:relative;
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
  transition:.25s;box-shadow:0 0 18px rgba(0,240,255,.35);
}
.btn-neon:hover{box-shadow:0 0 34px rgba(0,240,255,.8);transform:translateY(-2px)}
.btn-neon.full{width:100%}
.btn-neon.big{font-size:17px;padding:16px 40px;margin-top:26px}
.btn-ghost{
  font-family:'Rajdhani';font-weight:700;letter-spacing:2px;cursor:pointer;
  background:transparent;color:var(--cyan);border:1px solid var(--border);
  padding:12px 22px;font-size:15px;transition:.25s;
}
.btn-ghost:hover{background:rgba(0,240,255,.08);box-shadow:0 0 18px rgba(0,240,255,.3)}
.btn-ghost.full{width:100%}
.icon-btn{background:transparent;border:1px solid var(--border);color:var(--cyan);cursor:pointer;
  width:42px;height:42px;font-size:18px;display:flex;align-items:center;justify-content:center;transition:.2s;flex-shrink:0}
.icon-btn:hover{background:rgba(0,240,255,.1);box-shadow:0 0 14px rgba(0,240,255,.35)}

/* ---------- auth ---------- */
#authScreen{position:relative;z-index:1;height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;overflow:auto}
.auth-card{
  width:420px;max-width:100%;background:var(--panel);border:1px solid var(--border);
  padding:34px 32px;backdrop-filter:blur(14px);position:relative;
  box-shadow:0 0 60px rgba(0,240,255,.12),inset 0 0 40px rgba(0,240,255,.03);
  clip-path:polygon(24px 0,100% 0,100% calc(100% - 24px),calc(100% - 24px) 100%,0 100%,0 24px);
}
.auth-card::before{content:"";position:absolute;top:0;left:24px;right:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--purple),transparent)}
.tabs{display:flex;gap:8px;margin-bottom:20px}
.tab-btn{flex:1;background:transparent;border:1px solid var(--border);color:var(--muted);
  font-family:'Orbitron';font-size:12px;letter-spacing:2px;padding:10px;cursor:pointer;transition:.2s}
.tab-btn.active{color:#04050e;background:linear-gradient(90deg,var(--cyan),var(--purple));box-shadow:0 0 16px rgba(0,240,255,.4)}
.auth-form label{display:block;font-size:11px;letter-spacing:3px;color:var(--cyan);margin:14px 0 5px;font-weight:700}
.auth-form input{
  width:100%;background:rgba(0,240,255,.05);border:1px solid var(--border);color:var(--text);
  padding:12px 14px;font-family:'Rajdhani';font-size:16px;font-weight:600;outline:none;transition:.2s;
}
.auth-form input:focus{border-color:var(--cyan);box-shadow:0 0 14px rgba(0,240,255,.3)}
.auth-form .btn-neon{margin-top:22px}
.auth-divider{display:flex;align-items:center;gap:12px;color:var(--muted);margin:20px 0;font-size:12px;letter-spacing:3px}
.auth-divider::before,.auth-divider::after{content:"";flex:1;height:1px;background:var(--border)}
.auth-note{text-align:center;color:var(--muted);font-size:13px;margin-top:12px}
.auth-note b{color:var(--cyan)}

/* ---------- app layout ---------- */
#app{position:relative;z-index:1;display:flex;height:100vh}
#sidebar{
  width:280px;flex-shrink:0;background:var(--panel);border-right:1px solid var(--border);
  display:flex;flex-direction:column;padding:20px 14px;gap:14px;backdrop-filter:blur(14px);
}
.side-logo{display:flex;align-items:center;gap:12px}
.side-logo b{font-family:'Orbitron';font-size:20px;letter-spacing:2px}
.side-logo small{display:block;color:var(--muted);letter-spacing:4px;font-size:10px}
.side-label{color:var(--cyan);font-size:11px;letter-spacing:3px;font-weight:700;margin-top:6px}
#chatList{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:6px}
.chat-item{
  padding:10px 12px;border:1px solid transparent;cursor:pointer;display:flex;align-items:center;gap:8px;transition:.2s;
}
.chat-item:hover{background:rgba(0,240,255,.06)}
.chat-item.active{border-color:var(--border);background:rgba(0,240,255,.08);box-shadow:inset 3px 0 0 var(--cyan)}
.chat-item .ci-title{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600;font-size:15px}
.chat-item .ci-del{background:none;border:none;color:var(--muted);cursor:pointer;font-size:15px;padding:2px 6px}
.chat-item .ci-del:hover{color:var(--danger)}
.side-user{display:flex;align-items:center;gap:10px;border-top:1px solid var(--border);padding-top:14px}
.avatar{
  width:40px;height:40px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  font-family:'Orbitron';font-weight:700;color:#04050e;background:linear-gradient(135deg,var(--pink),var(--purple));
  clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);
}
.avatar.ai{background:linear-gradient(135deg,var(--cyan),var(--green))}
.side-user-info{flex:1;min-width:0}
.side-user-info b{display:block;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-user-info small{color:var(--muted)}

.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{display:flex;align-items:center;gap:14px;padding:14px 22px;border-bottom:1px solid var(--border);background:rgba(4,5,14,.6);backdrop-filter:blur(10px)}
.topbar-title{font-family:'Orbitron';letter-spacing:2px;font-size:17px}
.topbar-title span{color:var(--cyan)}
.topbar-title em{font-family:'Rajdhani';font-style:normal;color:var(--muted);font-size:13px;margin-left:12px;letter-spacing:1px}
.status{margin-left:auto;display:flex;align-items:center;gap:7px;color:var(--green);font-size:12px;letter-spacing:2px;font-weight:700}
.status .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green);animation:blink 1.6s infinite}
@keyframes blink{50%{opacity:.35}}
#menuBtn{display:none}

/* ---------- chat ---------- */
.chat-scroll{flex:1;overflow-y:auto;padding:26px 8vw 20px;scroll-behavior:smooth}
#hero{text-align:center;padding:5vh 0 30px;animation:fadeUp .7s ease}
.hero-badge{display:inline-block;border:1px solid var(--border);color:var(--cyan);font-size:11px;letter-spacing:3px;padding:6px 16px;margin-bottom:22px;box-shadow:0 0 16px rgba(0,240,255,.15)}
.hero-title{font-family:'Orbitron';font-size:clamp(38px,6vw,64px);letter-spacing:4px;animation:glowT 3s ease-in-out infinite}
.hero-title span{background:linear-gradient(90deg,var(--cyan),var(--purple),var(--pink),var(--cyan));background-size:300% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shift 6s linear infinite}
@keyframes shift{to{background-position:300% 0}}
@keyframes glowT{0%,100%{text-shadow:0 0 22px rgba(0,240,255,.35)}50%{text-shadow:0 0 44px rgba(168,85,247,.55)}}
.hero-tag{max-width:620px;margin:14px auto 0;color:var(--muted);font-size:18px;line-height:1.55}
.hero-tag b{color:var(--cyan)}
.hero-cards{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.hcard{width:210px;background:var(--panel);border:1px solid var(--border);padding:20px 16px;transition:.25s}
.hcard:hover{transform:translateY(-5px);box-shadow:0 0 26px rgba(0,240,255,.25)}
.hico{font-size:30px;margin-bottom:10px}
.hcard b{display:block;font-family:'Orbitron';font-size:13px;letter-spacing:1px;margin-bottom:6px;color:var(--cyan)}
.hcard small{color:var(--muted);line-height:1.4;display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

.msg-row{display:flex;gap:12px;margin:22px 0;animation:fadeUp .35s ease}
.msg-row.user{flex-direction:row-reverse}
.bubble{
  max-width:72%;background:var(--panel);border:1px solid var(--border);
  padding:14px 18px;font-size:17px;line-height:1.6;backdrop-filter:blur(8px);
  box-shadow:0 0 18px rgba(0,240,255,.07);
}
.msg-row.user .bubble{background:linear-gradient(135deg,rgba(168,85,247,.18),rgba(255,47,214,.12));border-color:rgba(255,47,214,.35);box-shadow:0 0 18px rgba(255,47,214,.12)}
.bubble .text{word-wrap:break-word}
.bubble .text code.inline{background:rgba(0,240,255,.12);padding:1px 7px;font-family:monospace;font-size:15px;border:1px solid rgba(0,240,255,.2)}
.bubble .text pre.codeblock{background:#070a18;border:1px solid var(--border);padding:14px;margin:10px 0;overflow-x:auto;font-family:monospace;font-size:14px;line-height:1.5;white-space:pre-wrap}
.bubble .text a{color:var(--cyan)}
.msg-meta{display:flex;align-items:center;gap:10px;margin-top:8px}
.msg-tag{font-size:10px;letter-spacing:2px;color:var(--muted)}
.copy-btn{background:none;border:1px solid var(--border);color:var(--muted);cursor:pointer;font-size:11px;padding:3px 10px;letter-spacing:1px;transition:.2s}
.copy-btn:hover{color:var(--cyan);box-shadow:0 0 10px rgba(0,240,255,.3)}
.att-img{max-width:280px;max-height:220px;display:block;margin-bottom:10px;border:1px solid var(--border);box-shadow:0 0 16px rgba(0,240,255,.2);cursor:pointer}
.att-vid{max-width:320px;display:block;margin-bottom:10px;border:1px solid var(--border)}
.att-name{font-size:12px;color:var(--muted);margin-bottom:6px;letter-spacing:1px}

#typing .bubble{display:flex;gap:6px;align-items:center}
.tdot{width:8px;height:8px;border-radius:50%;background:var(--cyan);animation:tb 1.2s infinite}
.tdot:nth-child(2){animation-delay:.2s}.tdot:nth-child(3){animation-delay:.4s}
@keyframes tb{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}

/* ---------- composer ---------- */
.composer{padding:14px 8vw 12px;border-top:1px solid var(--border);background:rgba(4,5,14,.75);backdrop-filter:blur(12px)}
#pendingBar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.pending-chip{position:relative;border:1px solid var(--border);padding:4px}
.pending-chip img,.pending-chip video{width:64px;height:64px;object-fit:cover;display:block}
.pending-chip .rm{position:absolute;top:-8px;right:-8px;width:20px;height:20px;border-radius:50%;border:none;background:var(--danger);color:#fff;cursor:pointer;font-size:12px;line-height:1}
.composer-row{display:flex;gap:12px;align-items:flex-end}
#chatInput{
  flex:1;background:rgba(0,240,255,.05);border:1px solid var(--border);color:var(--text);
  font-family:'Rajdhani';font-size:17px;font-weight:600;padding:13px 16px;outline:none;resize:none;
  max-height:160px;line-height:1.4;transition:.2s;
}
#chatInput:focus{border-color:var(--cyan);box-shadow:0 0 18px rgba(0,240,255,.25)}
.send-btn{
  width:50px;height:50px;flex-shrink:0;border:none;cursor:pointer;font-size:19px;color:#04050e;
  background:linear-gradient(135deg,var(--cyan),var(--purple));
  clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);
  transition:.2s;box-shadow:0 0 20px rgba(0,240,255,.4);
}
.send-btn:hover{box-shadow:0 0 36px rgba(0,240,255,.8);transform:scale(1.07)}
.composer-note{text-align:center;color:var(--muted);font-size:11px;letter-spacing:2px;margin-top:9px}

/* ---------- toast ---------- */
#toast{
  position:fixed;bottom:26px;left:50%;transform:translate(-50%,20px);z-index:99;opacity:0;pointer-events:none;
  background:var(--panel);border:1px solid var(--border);color:var(--text);padding:12px 26px;
  font-weight:700;letter-spacing:1px;transition:.3s;box-shadow:0 0 24px rgba(0,240,255,.25);
}
#toast.show{opacity:1;transform:translate(-50%,0)}
#toast.success{border-color:rgba(57,255,136,.5);color:var(--green)}
#toast.error{border-color:rgba(255,77,109,.5);color:var(--danger)}

/* ---------- scrollbar ---------- */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(0,240,255,.25);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:rgba(0,240,255,.5)}

/* ---------- responsive ---------- */
@media(max-width:860px){
  #sidebar{position:fixed;z-index:40;height:100%;left:-300px;transition:left .3s;box-shadow:0 0 40px rgba(0,0,0,.6)}
  #sidebar.open{left:0}
  #menuBtn{display:flex}
  .chat-scroll,.composer{padding-left:16px;padding-right:16px}
  .topbar-title em{display:none}
  .bubble{max-width:86%}
}