:root {
  --qa-chat-accent: var(--accent-color);
  --qa-chat-heading: var(--heading-color);
  --qa-chat-surface: var(--surface-color);
  --qa-chat-contrast: var(--contrast-color);
  --qa-chat-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
}

.qa-chat {
  position: fixed;
  right: 24px;
  bottom: 90px;
  z-index: 9999;
  font-family: var(--default-font);
}

.qa-chat__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 50%;
  width: 80px;
  height: 80px;
  padding: 0;
  background: transparent;
  box-shadow: var(--qa-chat-shadow);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
}

.qa-chat__toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 46px rgba(0, 0, 0, 0.22);
}

.qa-chat__toggle-icon {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.qa-chat__panel {
  position: absolute;
  right: 0;
  bottom: 64px;
  width: 360px;
  max-width: 90vw;
  background: var(--qa-chat-surface);
  border-radius: 18px;
  box-shadow: var(--qa-chat-shadow);
  display: none;
  flex-direction: column;
  overflow: hidden;
  animation: qa-slide-up 0.25s ease;
}

.qa-chat.is-open .qa-chat__panel {
  display: flex;
}

.qa-chat__header {
  background: var(--qa-chat-accent);
  color: var(--qa-chat-contrast);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.qa-chat__title {
  font-weight: 700;
  font-family: var(--heading-font);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.qa-chat__subtitle {
  font-size: 12px;
  font-weight: 400;
  opacity: 0.9;
}

.qa-chat__close {
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
}

.qa-chat__body {
  padding: 14px;
  background: #f6f9fc;
}

.qa-chat__messages {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 260px;
  overflow-y: auto;
  padding-right: 6px;
}

.qa-chat__message {
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.4;
}

.qa-chat__message--bot {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  color: #24364d;
}

.qa-chat__message--user {
  align-self: flex-end;
  background: rgba(0, 30, 56, 0.1);
  color: #0d2a4f;
}

.qa-chat__message a {
  color: var(--qa-chat-accent);
  text-decoration: underline;
}

.qa-chat__suggestions {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.qa-chat__suggestion {
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: #ffffff;
  color: #2c4964;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.2s ease, border 0.2s ease;
}

.qa-chat__suggestion:hover {
  background: rgba(0, 30, 56, 0.08);
  border-color: rgba(0, 30, 56, 0.18);
}

.qa-chat__form {
  display: flex;
  gap: 8px;
  padding: 12px 14px 14px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  background: #ffffff;
}

.qa-chat__input {
  flex: 1;
  border: 1px solid rgba(0, 0, 0, 0.16);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
}

.qa-chat__input:focus {
  outline: 2px solid rgba(0, 30, 56, 0.25);
  border-color: rgba(0, 30, 56, 0.4);
}

.qa-chat__send {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  background: var(--qa-chat-accent);
  color: var(--qa-chat-contrast);
  font-weight: 600;
  cursor: pointer;
}

@keyframes qa-slide-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 576px) {
  .qa-chat {
    right: 16px;
    bottom: 80px;
  }

  .qa-chat__panel {
    width: 92vw;
  }
}