:root{
  --bg-1:#011228;
  --bg-2:#001b2b;
  --accent:#00BD8A;
  --accent-2:#00A4FF;
  --muted:#8B949E;
  --panel:#011B3B80;
  --glass: rgba(255,255,255,0.03);
}

*{box-sizing:border-box}
html,body,#app{height:100%}
body{
  margin:0;
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  background: linear-gradient(135deg, var(--bg-1) 0%, var(--bg-2) 100%);
  color:#e6f1ff;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

.app-root{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  padding:32px;
  position:relative;
}

.canvas-bg{position:absolute;inset:0;opacity:0.18;pointer-events:none;background:
  radial-gradient(circle at 20% 50%, rgba(157,78,221,0.25) 0%, transparent 40%),
  radial-gradient(circle at 80% 50%, rgba(0,164,255,0.18) 0%, transparent 40%);
  filter:blur(20px);
}

.app-header{width:100%;max-width:980px;display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;z-index:2}
.logo-wrap{display:flex;align-items:center;gap:12px}
.logo{font-weight:700;font-size:20px;color:var(--accent);text-shadow:0 0 18px rgba(0,189,138,0.35)}
.logo-glow{width:48px;height:48px;border-radius:999px;background:radial-gradient(circle, rgba(0,189,138,0.25) 0%, transparent 50%);box-shadow:0 0 20px rgba(0,189,138,0.25)}
.status{color:var(--muted);font-size:14px}

.chat-panel{width:100%;max-width:980px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.015));border-radius:18px;border:1px solid rgba(0,189,138,0.08);overflow:hidden;box-shadow:0 8px 40px rgba(0,0,0,0.6);z-index:2}

.messages{height:520px;overflow-y:auto;padding:28px;display:flex;flex-direction:column;gap:18px}
.message{max-width:78%;display:flex;gap:12px;align-items:flex-start}
.message.bot{justify-content:flex-start}
.message.user{justify-content:flex-end;align-self:flex-end}
.bubble{padding:14px 16px;border-radius:12px;line-height:1.35;box-shadow:0 6px 20px rgba(2,6,23,0.6)}
.bubble.bot{background:rgba(1,27,59,0.7);border:1px solid rgba(0,189,138,0.12);color:var(--accent-2);}
.bubble.user{background:rgba(1,18,40,0.8);border:1px solid rgba(0,164,255,0.09);color:#c9d1d9}
.meta{font-size:12px;color:var(--muted);margin-bottom:6px}

.typing{display:none;padding:0 28px 18px}
.typing .dot{display:inline-block;width:8px;height:8px;border-radius:999px;margin-right:6px;background:var(--accent);opacity:0.85;animation:typing 1s infinite}
.typing .dot:nth-child(2){animation-delay:0.12s}
.typing .dot:nth-child(3){animation-delay:0.24s}
@keyframes typing{0%{transform:translateY(0) scale(1);opacity:0.6}50%{transform:translateY(-6px) scale(1.15);opacity:1}100%{transform:translateY(0) scale(1);opacity:0.6}}

.composer{display:flex;gap:12px;padding:18px;border-top:1px solid rgba(255,255,255,0.02);background:var(--panel);align-items:center}
.input{flex:1;padding:12px 14px;border-radius:12px;border:1px solid rgba(48,54,61,0.4);background:rgba(255,255,255,0.02);color:#c9d1d9;outline:none}
.input:focus{box-shadow:0 0 18px rgba(0,189,138,0.12);border-color:rgba(0,189,138,0.25)}
.send{padding:10px 16px;border-radius:10px;border:none;background:var(--accent);color:#011228;font-weight:600;cursor:pointer}
.send:disabled{opacity:0.6;cursor:not-allowed}

.app-footer{margin-top:16px;color:var(--muted);font-size:13px;z-index:2}

/* small screens */
@media (max-width:640px){
  .messages{height:60vh;padding:18px}
  .chat-panel{border-radius:14px}
}

/* small utilities used by server template: */
.hidden{display:none}