:root { color-scheme: light; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: #0f172a;
  background: radial-gradient(circle at top left, rgba(37, 99, 235, .10), transparent 34%), linear-gradient(135deg, #f8fbff, #eef4fb);
}

* { box-sizing: border-box; }

.ai-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid #d7e2f1;
  background: rgba(255, 255, 255, .94);
}

.ai-wrap {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.ai-topbar .ai-wrap {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.ai-brand { font-weight: 900; }

.ai-button {
  min-height: 42px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 10px 14px;
  background: #ffffff;
  color: #0f172a;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.ai-button.primary {
  border-color: transparent;
  background: #16a34a;
  color: #ffffff;
}

main.ai-wrap { padding: 28px 0 46px; }

.ai-hero,
.ai-panel,
.ai-card {
  border: 1px solid #d7e2f1;
  border-radius: 14px;
  background: rgba(255, 255, 255, .97);
}

.ai-hero { padding: 24px; }

.ai-eyebrow {
  color: #1d4ed8;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 { margin: 8px 0 10px; font-size: clamp(28px, 5vw, 40px); }
h2 { margin: 0 0 12px; }
p { color: #475569; line-height: 1.55; }

.ai-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr);
  gap: 16px;
  margin-top: 18px;
}

.ai-panel { padding: 18px; }

textarea,
select {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 12px;
  background: #ffffff;
  color: #0f172a;
}

textarea { min-height: 150px; resize: vertical; }
label { display: block; margin: 12px 0 7px; color: #334155; font-weight: 800; }

.ai-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.ai-message {
  margin-top: 12px;
  padding: 11px;
  border-radius: 10px;
  background: #eff6ff;
  color: #1e40af;
}

.ai-message.is-error {
  background: #fef2f2;
  color: #991b1b;
}

.ai-card {
  padding: 14px;
  margin-bottom: 10px;
}

.ai-card strong { color: #0f172a; }
.ai-muted { color: #64748b; font-size: 13px; }
.ai-answer { white-space: pre-wrap; }

@media (max-width: 860px) {
  .ai-topbar .ai-wrap { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .ai-grid { grid-template-columns: 1fr; }
}