body.chat-page {
  background: radial-gradient(circle at top left, rgba(34, 211, 238, 0.08), transparent 40%),
              radial-gradient(circle at top right, rgba(249, 115, 22, 0.08), transparent 40%),
              linear-gradient(180deg, #0b1020, #0f172a 35%, #0b1120 100%);
}

.chat-layout {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  padding: 28px;
}

.chat-sidebar {
  background: rgba(15, 23, 42, 0.82);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow);
}

.chat-page input,
.chat-page textarea {
  font-size: 16px;
  padding: 12px 14px;
}

.chat-page button {
  font-size: 15px;
  padding: 12px 20px;
}

.chat-sidebar label {
  font-size: 15px;
}

.chat-sidebar__title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.chat-sidebar__divider {
  height: 1px;
  background: var(--border);
  margin: 6px 0 4px;
}

.chat-back {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1120;
  text-decoration: none;
  font-weight: 700;
  padding: 10px 14px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 10px 24px rgba(34, 211, 238, 0.25);
}

.chat-main {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 0;
}

.chat-header h1 {
  margin: 0;
  font-size: 34px;
  letter-spacing: -0.02em;
}

.chat-thread {
  flex: 1;
  max-height: none;
  min-height: 320px;
}

.chat-input textarea {
  width: 100%;
  min-height: 160px;
  font-size: 16px;
}

.chat-input {
  width: 100%;
}

.chat-debug {
  margin-top: 6px;
}

.qa-chat {
  gap: 14px;
}

.qa-msg {
  font-size: 15px;
}

@media (max-width: 960px) {
  .chat-layout {
    grid-template-columns: 1fr;
  }

  .chat-back {
    width: 100%;
  }
}