:root{
  --bg:#08090d; --bg2:#0c0e14;
  --panel:rgba(20,23,31,.72); --panel-solid:#14171f; --panel2:#1b1f29;
  --line:rgba(255,255,255,.08); --line2:rgba(255,255,255,.05);
  --text:#eef0f5; --muted:#9aa3b5; --faint:#6b7385;
  --accent:#7c8cff; --accent2:#a86bff; --cyan:#3fdbd0; --ok:#3ecf8e; --err:#ff6b6b;
  --user-grad:linear-gradient(135deg,#3a4894,#5a4aa0);
  --radius:16px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Inter var","Inter",-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg); color:var(--text);
  height:100vh; display:flex; flex-direction:column;
  overflow:hidden; -webkit-font-smoothing:antialiased;
  letter-spacing:.1px;
}
.bgfx{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bgfx span{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;animation:drift 22s ease-in-out infinite}
.bgfx .b1{width:520px;height:520px;background:#4b58d8;top:-140px;left:-120px}
.bgfx .b2{width:460px;height:460px;background:#8a4bd8;bottom:-160px;right:-100px;animation-delay:-7s}
.bgfx .b3{width:380px;height:380px;background:#1f8f8a;top:40%;left:55%;opacity:.32;animation-delay:-13s}
@keyframes drift{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(40px,30px) scale(1.08)}66%{transform:translate(-30px,20px) scale(.95)}}

header{
  padding:13px 22px; border-bottom:1px solid var(--line);
  background:var(--panel); backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  display:flex; align-items:center; gap:14px; z-index:5;
}
.logo{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;
  box-shadow:0 4px 18px rgba(124,140,255,.45), inset 0 1px 0 rgba(255,255,255,.25);
}
header h1{font-size:15px;margin:0;font-weight:650;letter-spacing:.2px}
header .sub{font-size:11.5px;color:var(--muted);display:flex;align-items:center;gap:6px}
.live{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 0 rgba(62,207,142,.6);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(62,207,142,.55)}70%{box-shadow:0 0 0 7px rgba(62,207,142,0)}100%{box-shadow:0 0 0 0 rgba(62,207,142,0)}}

.progwrap{margin-left:auto;min-width:210px;text-align:right;display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.progwrap .lbl{font-size:11px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;width:100%}
#phaseLbl{color:var(--text);font-weight:550}
.barTrack{width:100%;height:5px;border-radius:3px;background:rgba(255,255,255,.09);overflow:hidden}
.barFill{height:100%;width:0%;background:linear-gradient(90deg,var(--accent),var(--accent2));transition:width .4s ease}
.finishBtn{background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--muted);
  padding:4px 10px;border-radius:8px;font-size:11px;cursor:pointer;transition:.15s}
.finishBtn:hover{border-color:var(--accent);color:var(--text)}

main{flex:1;overflow-y:auto;padding:26px 0 10px;scroll-behavior:smooth}
main::-webkit-scrollbar{width:9px}
main::-webkit-scrollbar-thumb{background:rgba(255,255,255,.08);border-radius:8px;border:2px solid transparent;background-clip:padding-box}
.chat{max-width:780px;margin:0 auto;padding:0 22px;display:flex;flex-direction:column;gap:16px}
.msg{display:flex;gap:11px;max-width:86%;animation:rise .38s cubic-bezier(.22,1,.36,1) both}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.msg .av{
  width:30px;height:30px;border-radius:9px;flex-shrink:0;font-size:12px;
  display:flex;align-items:center;justify-content:center;font-weight:750;letter-spacing:.3px;
}
.msg.bot .av{background:linear-gradient(135deg,var(--accent2),var(--accent));color:#fff;
  box-shadow:0 3px 12px rgba(124,140,255,.35), inset 0 1px 0 rgba(255,255,255,.25)}
.msg.user{align-self:flex-end;flex-direction:row-reverse}
.msg.user .av{background:linear-gradient(135deg,#4a5aa8,#6b5ab0);color:#fff}
.msg.error .av{background:linear-gradient(135deg,var(--err),#b83f3f);color:#fff}
.bubble{
  padding:12px 15px;border-radius:15px;line-height:1.55;font-size:14.5px;
  white-space:pre-wrap;word-wrap:break-word;position:relative;
}
.msg.bot .bubble{
  background:linear-gradient(180deg,rgba(30,34,45,.9),rgba(24,27,37,.9));
  border:1px solid var(--line);border-top-left-radius:5px;
  box-shadow:0 2px 20px rgba(0,0,0,.25);
}
.msg.user .bubble{background:var(--user-grad);border-top-right-radius:5px;
  box-shadow:0 4px 18px rgba(74,90,168,.3)}
.msg.error .bubble{background:rgba(255,107,107,.1);border:1px solid rgba(255,107,107,.3);color:#ffb3b3}

.typing .bubble{display:flex;gap:5px;align-items:center;padding:15px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:bounce 1.3s infinite ease-in-out}
.dot:nth-child(2){animation-delay:.16s}
.dot:nth-child(3){animation-delay:.32s}
@keyframes bounce{0%,80%,100%{transform:translateY(0);opacity:.4}40%{transform:translateY(-5px);opacity:1}}

footer{border-top:1px solid var(--line);background:var(--panel);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);padding:14px 22px 18px}
.inrow{max-width:780px;margin:0 auto;display:flex;gap:11px;align-items:flex-end}
.inwrap{flex:1;position:relative;display:flex}
textarea{
  flex:1;resize:none;background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text);
  border-radius:14px;padding:12px 15px;font-size:14.5px;font-family:inherit;max-height:120px;line-height:1.45;
  transition:border-color .2s, box-shadow .2s;
}
textarea:disabled{opacity:.5}
textarea::placeholder{color:var(--faint)}
textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(124,140,255,.15)}
button.send{
  width:46px;height:46px;flex-shrink:0;border:none;border-radius:14px;cursor:pointer;
  background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 16px rgba(124,140,255,.4);transition:transform .15s, box-shadow .15s, opacity .2s;
}
button.send:hover{transform:translateY(-1px);box-shadow:0 6px 22px rgba(124,140,255,.5)}
button.send:active{transform:scale(.94)}
button.send:disabled{opacity:.35;cursor:default;box-shadow:none;transform:none}
button.send svg{width:19px;height:19px}
.hint{max-width:780px;margin:8px auto 0;font-size:11px;color:var(--faint);text-align:center}
.hint kbd{background:rgba(255,255,255,.07);border:1px solid var(--line);border-radius:5px;padding:1px 6px;font-family:inherit;font-size:10.5px}

.done{max-width:780px;margin:16px auto 30px;padding:30px 28px;
  background:linear-gradient(180deg,rgba(24,27,37,.85),rgba(18,21,29,.85));
  border:1px solid var(--line);border-radius:22px;
  box-shadow:0 20px 60px rgba(0,0,0,.4);animation:rise .5s ease both}
.checkwrap{display:flex;align-items:center;gap:14px;margin-bottom:6px}
.checkcircle{width:46px;height:46px;flex-shrink:0}
.checkcircle circle{fill:none;stroke:var(--ok);stroke-width:3}
.checkcircle path{fill:none;stroke:var(--ok);stroke-width:4;stroke-linecap:round;stroke-linejoin:round}
.done h2{margin:0;font-size:20px;font-weight:700}
.done .subtxt{color:var(--muted);font-size:14px;margin:4px 0 18px}
.filebadge{font-size:12.5px;color:var(--muted);margin-bottom:8px;display:flex;align-items:center;gap:7px}
.filebadge b{color:var(--text)}
.dbtns{display:flex;gap:11px;margin-top:18px;flex-wrap:wrap}
.dbtns button{border-radius:11px;padding:11px 17px;font-size:13.5px;font-weight:600;cursor:pointer;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);transition:.15s}
.dbtns button:hover{border-color:var(--accent);background:rgba(124,140,255,.1);transform:translateY(-1px)}
.note{font-size:11.5px;color:var(--faint);margin-top:10px;line-height:1.5}
.note code{background:rgba(255,255,255,.06);padding:1px 5px;border-radius:4px}

@media (max-width:560px){
  .progwrap{min-width:120px}
  header .sub{display:none}
  .msg{max-width:92%}
}