:root {
  color-scheme: dark;
  --bg: #09090f;
  --panel: rgba(255,255,255,.07);
  --panel2: rgba(255,255,255,.1);
  --text: #f7f7fb;
  --muted: #a6a6b8;
  --accent: #67e8f9;
  --accent2: #a78bfa;
  --danger: #fb7185;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(103,232,249,.18), transparent 32rem),
    radial-gradient(circle at top right, rgba(167,139,250,.16), transparent 28rem),
    var(--bg);
  color: var(--text);
}
.app { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 40px 0; }
.hero { text-align: center; margin-bottom: 28px; }
.badge { display: inline-flex; padding: 8px 14px; border: 1px solid rgba(255,255,255,.14); border-radius: 999px; background: var(--panel); color: var(--accent); }
h1 { font-size: clamp(36px, 6vw, 76px); line-height: .95; margin: 18px 0 10px; letter-spacing: -0.06em; }
p { color: var(--muted); margin: 0; }
code { color: var(--accent); }
.grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 18px; }
.card { border: 1px solid rgba(255,255,255,.12); background: linear-gradient(180deg, var(--panel2), rgba(255,255,255,.04)); border-radius: 24px; padding: 18px; box-shadow: 0 24px 80px rgba(0,0,0,.35); }
.card-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; margin-bottom: 14px; }
h2 { margin: 0 0 4px; }
select, textarea, button { border: 1px solid rgba(255,255,255,.14); border-radius: 14px; background: rgba(0,0,0,.26); color: var(--text); font: inherit; }
select { padding: 10px 12px; }
textarea { width: 100%; resize: vertical; padding: 14px; outline: none; }
textarea:focus, select:focus { border-color: rgba(103,232,249,.7); box-shadow: 0 0 0 3px rgba(103,232,249,.12); }
button { cursor: pointer; border: 0; padding: 12px 18px; font-weight: 800; color: #061014; background: linear-gradient(135deg, var(--accent), var(--accent2)); }
button:disabled { opacity: .55; cursor: not-allowed; }
.messages { height: 520px; overflow: auto; padding: 12px; border-radius: 18px; background: rgba(0,0,0,.22); border: 1px solid rgba(255,255,255,.08); margin-bottom: 12px; }
.msg { max-width: 86%; margin: 0 0 12px; padding: 12px 14px; border-radius: 18px; white-space: pre-wrap; line-height: 1.55; }
.msg.user { margin-left: auto; background: rgba(103,232,249,.16); border: 1px solid rgba(103,232,249,.24); }
.msg.assistant { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.1); }
.msg.error { background: rgba(251,113,133,.12); border: 1px solid rgba(251,113,133,.28); color: #fecdd3; }
.composer { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: end; }
.image-form { display: grid; gap: 10px; }
.row { display: flex; gap: 10px; }
.row select { flex: 1; }
.image-result { margin-top: 14px; display: grid; gap: 12px; }
.image-result img { width: 100%; border-radius: 18px; border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.04); }
.notice { padding: 12px; border-radius: 16px; background: rgba(255,255,255,.08); color: var(--muted); }
@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
  .messages { height: 420px; }
  .composer { grid-template-columns: 1fr; }
  .row { flex-direction: column; }
}