:root {
  --navy: #1B2A4A;
  --blue: #3B82F6;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #64748b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  background: var(--navy);
  color: #fff;
  padding: 14px 22px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.brand { font-weight: 700; font-size: 1.15rem; }
.subbrand { color: #93c5fd; font-size: .9rem; }

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

.hidden { display: none !important; }

.banner {
  background: #fef3c7;
  border: 1px solid #fcd34d;
  color: #92400e;
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 16px;
  font-size: .92rem;
}

.intro h1 { color: var(--navy); font-size: 1.6rem; margin-top: 8px; }
.intro p { color: var(--muted); line-height: 1.6; }

.btn-primary {
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px 22px;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 8px;
}
.btn-primary:hover { background: #2563eb; }

.chat {
  background: var(--card);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(15, 23, 42, .08);
  overflow: hidden;
}

.messages {
  padding: 18px;
  height: 56vh;
  min-height: 320px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bubble {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 14px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.bubble.user {
  align-self: flex-end;
  background: var(--blue);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.bubble.assistant {
  align-self: flex-start;
  background: #eef2f7;
  color: var(--text);
  border-bottom-left-radius: 4px;
}
.bubble.pending::after {
  content: "…";
  color: var(--muted);
}

.composer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid #e2e8f0;
}
.composer input[type="text"] {
  flex: 1;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 11px 12px;
  font-size: 1rem;
}
.composer input[type="text"]:focus { outline: 2px solid var(--blue); border-color: var(--blue); }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; }

.mic {
  border: 1px solid #cbd5e1;
  background: #fff;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 1.2rem;
  cursor: pointer;
  flex-shrink: 0;
}
.mic.active { background: #fee2e2; border-color: #ef4444; animation: pulse 1.2s infinite; }
.mic:disabled { opacity: .4; cursor: not-allowed; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(239,68,68,.4); } 50% { box-shadow: 0 0 0 6px rgba(239,68,68,0); } }

.btn-send {
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 11px 16px;
  font-size: 1rem;
  cursor: pointer;
}
.btn-send:hover { background: #142036; }

.controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 14px 12px;
  font-size: .88rem;
  color: var(--muted);
}
.toggle { cursor: pointer; }
.hint { color: #16a34a; }

.legal {
  text-align: center;
  color: var(--muted);
  font-size: .82rem;
  margin-top: 18px;
}
.legal a { color: var(--blue); }