style.css

:root{
  --bg: #0b0f14;
  --bg2:#070a0f;
  --border: rgba(255,255,255,0.12);
  --text: #e9f2ff;
  --muted:#94a3b8;

  --cyan:#22d3ee;
  --cyanBorder: rgba(34,211,238,0.55);
  --cyanGlow: rgba(34,211,238,0.14);

  --shadow: 0 20px 70px rgba(0,0,0,0.60);
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(1100px 650px at 15% -10%, rgba(34,211,238,0.10), transparent 55%),
    radial-gradient(900px 600px at 90% 5%, rgba(34,211,238,0.06), transparent 60%),
    linear-gradient(180deg, #0b1020, var(--bg2));
}

.page{ height:100vh; display:flex; flex-direction:column; }

.header{
  display:flex; align-items:center; justify-content:space-between;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.02);
  backdrop-filter: blur(10px);
}

.brand{ display:flex; gap: 10px; align-items:center; }
.logo{
  width: 36px; height: 36px; border-radius: 14px;
  display:grid; place-items:center;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.04);
}
.logo svg{ fill:#fff; opacity:0.92; }

.brandName{ font-weight:800; letter-spacing:0.2px; line-height:1.1; }
.brandSub{ font-size:12px; font-family: var(--mono); color: var(--muted); margin-top:2px; }

.status{ display:flex; align-items:center; gap:8px; font-family: var(--mono); font-size:12px; color: var(--muted); }
.dot{ width:10px; height:10px; border-radius:50%; background:#64748b; }
.dot.on{ background: var(--cyan); box-shadow: 0 0 0 6px rgba(34,211,238,0.12); }

.main{
  flex: 1 1 auto; min-height:0;
  display:flex; flex-direction:column;
  width:100%; max-width: 980px;
  margin: 0 auto;
  padding: 18px;
  gap: 14px;
}

.hero{ text-align:center; padding: 18px 8px 8px; }
.hero h1{ margin:0; font-size: 38px; letter-spacing: -0.8px; }
.hero p{ margin:10px 0 0; color: var(--muted); font-size: 14px; }

.chatWrap{ flex: 1 1 auto; min-height:0; }
.chat{ height:100%; overflow:auto; padding: 8px 0; }

.msg{ display:flex; margin: 12px 0; }
.msg.user{ justify-content:flex-end; }
.msg.ai{ justify-content:flex-start; }

.bubble{
  max-width: min(760px, 92%);
  border-radius: 18px;
  padding: 12px 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.04);
  box-shadow: 0 10px 30px rgba(0,0,0,0.22);
}

.msg.user .bubble{
  background: rgba(34,211,238,0.08);
  border-color: rgba(34,211,238,0.22);
}

.msg.ai.highlight .bubble{
  border-color: var(--cyanBorder);
  box-shadow: 0 0 0 6px var(--cyanGlow), 0 10px 30px rgba(0,0,0,0.22);
}

.composerWrap{ padding-top: 6px; }
.composer{ display:flex; flex-direction:column; gap: 10px; }

.composerCard{
  display:flex; gap: 12px; align-items:flex-end;
  padding: 12px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.05);
  box-shadow: var(--shadow);
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}
.composerCard:hover{ border-color: rgba(34,211,238,0.35); }
.composerCard:focus-within{
  border-color: var(--cyanBorder);
  box-shadow: 0 0 0 6px var(--cyanGlow), var(--shadow);
  transform: translateY(-1px);
}

.prompt{
  flex: 1 1 auto; width:100%;
  resize:none; border:none; outline:none;
  background: transparent;
  color: var(--text);
  font-size: 15px; line-height: 1.45;
  padding: 10px 10px;
  min-height: 46px; max-height: 180px;
}

.actions{ display:flex; gap:10px; align-items:center; }

.toggle, .send{
  border-radius: 16px;
  padding: 10px 14px;
  font-weight: 800;
  cursor:pointer;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  transition: transform 100ms ease, border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.toggle:hover, .send:hover{
  border-color: rgba(34,211,238,0.40);
  box-shadow: 0 0 0 5px rgba(34,211,238,0.10);
}

.toggle[aria-pressed="true"]{
  border-color: var(--cyanBorder);
  background: rgba(34,211,238,0.10);
  box-shadow: 0 0 0 5px rgba(34,211,238,0.12);
}

.send:active, .toggle:active{ transform: translateY(1px); }

.hint{
  text-align:center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}
.hint span{
  padding: 2px 6px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.03);
}

.chat::-webkit-scrollbar{ width: 10px; }
.chat::-webkit-scrollbar-thumb{ background: rgba(255,255,255,0.10); border-radius: 10px; }
.chat::-webkit-scrollbar-thumb:hover{ background: rgba(34,211,238,0.20); }