:root {
  --bg-1: #0d0920;
  --bg-2: #191036;
  --panel: rgba(38, 27, 74, 0.55);
  --panel-solid: #241a49;
  --ink: #efe9ff;
  --ink-dim: #b9afd8;
  --accent: #c9a2ff;
  --accent-2: #7ee0c3;
  --danger: #ffb4b4;
  --radius: 16px;
  --font-display: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-ui: "Inter", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: var(--font-ui);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(120, 80, 220, 0.28), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(60, 140, 220, 0.18), transparent 55%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2));
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  justify-content: center;
}

/* faint twinkling stars */
.stars {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 22%, rgba(255,255,255,.7), transparent),
    radial-gradient(1px 1px at 34% 8%, rgba(255,255,255,.5), transparent),
    radial-gradient(2px 2px at 55% 30%, rgba(255,255,255,.6), transparent),
    radial-gradient(1px 1px at 71% 12%, rgba(255,255,255,.45), transparent),
    radial-gradient(1.5px 1.5px at 88% 26%, rgba(255,255,255,.65), transparent),
    radial-gradient(1px 1px at 8% 64%, rgba(255,255,255,.4), transparent),
    radial-gradient(1.5px 1.5px at 46% 74%, rgba(255,255,255,.5), transparent),
    radial-gradient(1px 1px at 82% 68%, rgba(255,255,255,.55), transparent),
    radial-gradient(1px 1px at 24% 90%, rgba(255,255,255,.4), transparent),
    radial-gradient(1.5px 1.5px at 66% 92%, rgba(255,255,255,.5), transparent);
  animation: twinkle 6s ease-in-out infinite alternate;
}
@keyframes twinkle {
  0% { opacity: .55; }
  100% { opacity: 1; }
}

.app {
  position: relative;
  z-index: 1;
  width: min(880px, 100%);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: 20px 16px;
  gap: 12px;
}

/* ---------- Header ---------- */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.header-left { display: flex; align-items: center; gap: 12px; }
.logo {
  font-size: 34px;
  line-height: 1;
  filter: drop-shadow(0 4px 12px rgba(160, 120, 255, 0.45));
}
h1 {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: linear-gradient(90deg, #ffffff, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.tagline { font-size: 13px; color: var(--ink-dim); margin-top: 1px; }

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 11.5px;
  font-weight: 600;
  padding: 6px 11px;
  border-radius: 999px;
  border: 1px solid rgba(201, 162, 255, 0.35);
  background: rgba(201, 162, 255, 0.08);
  color: var(--ink-dim);
  white-space: nowrap;
}
.badge-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 8px var(--accent-2);
}
.badge-connected .badge-dot { background: var(--accent-2); box-shadow: 0 0 8px var(--accent-2); }
.badge-checking .badge-dot { background: #ffd166; box-shadow: 0 0 8px #ffd166; animation: pulse 1s infinite; }
.badge-demo .badge-dot { background: #f6a5c0; box-shadow: 0 0 8px #f6a5c0; }
@keyframes pulse { 50% { opacity: .35; } }

.ghost-btn {
  font: inherit;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
  transition: background .15s, transform .1s;
}
.ghost-btn:hover { background: rgba(255, 255, 255, 0.12); transform: translateY(-1px); }

/* ---------- Chat ---------- */
.chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
  padding: 6px 4px 6px 6px;
  scroll-behavior: smooth;
}
.chat::-webkit-scrollbar { width: 8px; }
.chat::-webkit-scrollbar-thumb { background: rgba(201, 162, 255, 0.25); border-radius: 8px; }

.msg {
  max-width: 82%;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 14.5px;
  line-height: 1.6;
  word-wrap: break-word;
  animation: rise .25s ease;
}
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.msg.user {
  align-self: flex-end;
  background: linear-gradient(135deg, rgba(201, 162, 255, 0.28), rgba(140, 110, 240, 0.22));
  border: 1px solid rgba(201, 162, 255, 0.3);
  border-bottom-right-radius: 6px;
}
.msg.bot {
  align-self: flex-start;
  background: var(--panel);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-bottom-left-radius: 6px;
  font-family: var(--font-display);
  font-size: 16px;
  color: #f3edff;
}

.msg .story-title {
  font-weight: 700;
  font-size: 17.5px;
  letter-spacing: 0.02em;
  color: var(--accent-2);
  margin-bottom: 6px;
}
.msg p + p { margin-top: 10px; }
.msg .dim { color: var(--ink-dim); }
.msg .em { color: var(--accent); }

/* typing indicator */
.msg.typing {
  display: inline-flex;
  gap: 5px;
  padding: 14px 18px;
  font-family: var(--font-ui);
}
.msg.typing span {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  animation: blink 1.2s infinite;
}
.msg.typing span:nth-child(2) { animation-delay: .18s; }
.msg.typing span:nth-child(3) { animation-delay: .36s; }
@keyframes blink { 0%, 70%, 100% { opacity: .2; transform: scale(.85); } 35% { opacity: 1; transform: scale(1.1); } }

/* status line shown while loading/generating */
.msg.bot.status {
  font-family: var(--font-ui);
  font-size: 12.5px;
  color: var(--ink-dim);
  padding: 8px 14px;
}

/* ---------- Chips ---------- */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.chips button {
  font: inherit;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-dim);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 7px 13px;
  cursor: pointer;
  transition: all .15s;
}
.chips button:hover {
  color: var(--ink);
  background: rgba(201, 162, 255, 0.16);
  border-color: rgba(201, 162, 255, 0.4);
}

/* ---------- Composer ---------- */
.composer {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  background: var(--panel);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 10px 10px 10px 16px;
}
#input {
  flex: 1;
  resize: none;
  font: inherit;
  font-size: 14.5px;
  color: var(--ink);
  background: transparent;
  border: none;
  outline: none;
  line-height: 1.5;
  max-height: 160px;
  padding: 6px 0;
}
#input::placeholder { color: var(--ink-dim); opacity: .7; }

.send-btn {
  width: 42px; height: 42px;
  flex-shrink: 0;
  font-size: 17px;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  color: #221340;
  background: linear-gradient(135deg, var(--accent), #9b7bff);
  box-shadow: 0 4px 14px rgba(150, 110, 255, 0.35);
  transition: transform .1s, filter .15s;
}
.send-btn:hover { transform: translateY(-1px); filter: brightness(1.08); }
.send-btn:active { transform: translateY(0); }
.send-btn:disabled { opacity: .55; cursor: default; transform: none; }

.footnote {
  text-align: center;
  font-size: 11.5px;
  color: var(--ink-dim);
  opacity: .8;
  line-height: 1.5;
}
.footnote code {
  background: rgba(255, 255, 255, 0.08);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 10.5px;
}

@media (max-width: 560px) {
  .msg { max-width: 92%; }
  .badge { display: none; }
  .app { padding: 14px 10px; }
}