:root {
  --bg: #0f1220;
  --panel: #171a2b;
  --panel-2: #1e2238;
  --accent: #6c5ce7;
  --accent-2: #8f7bff;
  --bot-bubble: #232744;
  --user-bubble: linear-gradient(135deg, #6c5ce7, #8f7bff);
  --text: #eef0f8;
  --muted: #9aa0be;
  --ok: #34d399;
  --warn: #fbbf24;
  --err: #f87171;
  --radius: 18px;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 800px at 20% -10%, #23264a 0%, var(--bg) 55%);
  color: var(--text);
  display: flex;
  justify-content: center;
  align-items: center;
}

.app {
  width: min(760px, 100%);
  height: min(90vh, 900px);
  background: var(--panel);
  border-radius: 22px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.45);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--panel-2);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center;
  font-weight: 800; font-size: 20px;
}
.brand-name { font-weight: 700; font-size: 16px; }
.brand-sub { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
/* Reveal chips: "Model  show" -> (click) -> "Model  qwen3:0.6b". Toggleable. */
.reveal-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--muted);
  padding: 2px 4px 2px 8px; border-radius: 999px;
  font-size: 11px; font-weight: 600; cursor: pointer;
  transition: all .15s ease;
}
.reveal-btn:hover { border-color: var(--accent-2); color: var(--text); background: rgba(140,120,255,0.1); }
.reveal-key { color: var(--muted); text-transform: uppercase; letter-spacing: .04em; font-size: 10px; }
.reveal-btn:hover .reveal-key { color: var(--accent-2); }
.reveal-val {
  background: rgba(140,120,255,0.14); color: var(--accent-2);
  padding: 1px 8px; border-radius: 999px; font-size: 11px; font-weight: 700;
}
/* Revealed state: solid accent so it pops for the audience. */
.reveal-btn.revealed { border-color: var(--accent); background: rgba(140,120,255,0.14); }
.reveal-btn.revealed .reveal-val { background: var(--accent); color: #fff; }
.header-right { display: flex; align-items: center; gap: 14px; }
.status { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--warn); }
.status.ok .dot { background: var(--ok); }
.status.err .dot { background: var(--err); }

.reset-btn {
  display: flex; align-items: center; gap: 5px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--muted);
  padding: 6px 11px; border-radius: 10px;
  font-size: 12px; font-weight: 600; cursor: pointer;
  transition: all .15s ease;
}
.reset-btn:hover { border-color: var(--accent-2); color: var(--accent-2); background: rgba(140,120,255,0.1); }
.reset-btn:active { transform: scale(0.96); }
.reset-btn:disabled { opacity: .5; cursor: default; }
.reset-btn svg { transition: transform .5s ease; }
.reset-btn.spinning svg { transform: rotate(-360deg); }

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 22px 20px 8px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.row { display: flex; gap: 10px; align-items: flex-end; max-width: 85%; }
.row.user { align-self: flex-end; flex-direction: row-reverse; }
.avatar {
  width: 28px; height: 28px; border-radius: 50%; flex: 0 0 28px;
  display: grid; place-items: center; font-size: 13px; font-weight: 700;
}
.avatar.bot { background: var(--bot-bubble); color: var(--accent-2); }
.avatar.user { background: var(--user-bubble); color: white; }

.bubble {
  padding: 11px 15px;
  border-radius: var(--radius);
  line-height: 1.45;
  font-size: 14.5px;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.row.bot .bubble { background: var(--bot-bubble); border-bottom-left-radius: 6px; }
.row.user .bubble { background: var(--user-bubble); color: white; border-bottom-right-radius: 6px; }

.meta { font-size: 11px; color: var(--muted); margin-top: 5px; }
.meta .tag {
  display: inline-block; background: rgba(140,120,255,0.15);
  color: var(--accent-2); padding: 1px 7px; border-radius: 20px; margin-right: 6px;
}
.meta .src { color: var(--muted); }

.typing { display: flex; gap: 4px; padding: 4px 2px; }
.typing span {
  width: 7px; height: 7px; border-radius: 50%; background: var(--muted);
  animation: blink 1.2s infinite both;
}
.typing span:nth-child(2){ animation-delay: .2s; }
.typing span:nth-child(3){ animation-delay: .4s; }
@keyframes blink { 0%,80%,100%{ opacity:.2; transform:translateY(0);} 40%{ opacity:1; transform:translateY(-3px);} }

.suggestions {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 4px 20px 12px;
}
.chip {
  background: var(--panel-2);
  border: 1px solid rgba(140,120,255,0.35);
  color: var(--accent-2);
  padding: 7px 13px; border-radius: 20px;
  font-size: 13px; cursor: pointer;
  transition: all .15s ease;
  text-align: left;
}
.chip:hover { background: rgba(140,120,255,0.18); transform: translateY(-1px); }

/* Order cards: full-width, richer, tappable rows. */
.chip.order-card {
  width: 100%;
  border-radius: 12px;
  padding: 10px 14px;
  background: var(--panel);
  border: 1px solid rgba(140,120,255,0.28);
  color: var(--text);
  font-size: 13.5px;
  display: flex; align-items: center; gap: 8px;
}
.chip.order-card:hover { border-color: var(--accent-2); background: rgba(140,120,255,0.12); }

/* Confirm / cancel buttons stand out from navigation chips. */
.chip.confirm-yes {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  border: none; color: white; font-weight: 600;
}
.chip.confirm-yes:hover { filter: brightness(1.08); }
.chip.confirm-no {
  background: transparent; border: 1px solid rgba(255,255,255,0.2); color: var(--muted);
}
.chip.confirm-no:hover { border-color: var(--err); color: var(--err); }

/* Home / main-menu pill gets a subtle filled look. */
.chip.menu-home {
  background: rgba(140,120,255,0.16);
  border-color: transparent; font-weight: 600;
}

.composer {
  display: flex; gap: 10px; padding: 14px 16px;
  background: var(--panel-2);
  border-top: 1px solid rgba(255,255,255,0.06);
}
#input {
  flex: 1; background: var(--panel); border: 1px solid rgba(255,255,255,0.08);
  color: var(--text); padding: 12px 16px; border-radius: 14px; font-size: 14.5px; outline: none;
}
#input:focus { border-color: var(--accent); }
#send {
  width: 46px; border: none; border-radius: 14px; cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white; display: grid; place-items: center;
}
#send:disabled { opacity: .5; cursor: default; }