/* Chat surface: message canvas, empty states, jump-to-latest, debug chrome. */

.chatContainer {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--bg);
  min-width: 0;
  min-height: 0;
  width: 100%;
  position: relative;
}

.chatContainer .debugHeader {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 15;
  opacity: 0.9;
  pointer-events: auto;
}

.debugToggle {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 26px;
  height: 26px;
  padding: 0;
  background-color: transparent;
  border: none;
  border-radius: var(--r-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--text-3);
  opacity: 0.25;
  transition:
    opacity var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease);
  z-index: 20;
}

.debugToggle:hover {
  opacity: 1;
  background-color: var(--surface-3);
}

.queryHeader {
  flex-shrink: 0;
  padding: var(--sp-2) var(--sp-4);
  background-color: var(--surface-2);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-2);
  font-size: 12px;
  color: var(--text-3);
  overflow: hidden;
  min-width: 0;
  width: 100%;
}

.querySelection {
  font-family: var(--font-mono);
  font-size: 11px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.queryStatus {
  font-size: 14px;
  font-weight: bold;
  flex-shrink: 0;
  margin-left: var(--sp-2);
}

.queryStatus.loaded {
  color: var(--ok);
}

.queryStatus.loading {
  color: var(--unread-bg);
  animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* Empty states -------------------------------------------------------------- */

.emptyState {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: var(--sp-8) var(--sp-6);
  color: var(--text-3);
  text-align: center;
}

.emptyStateArt {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  margin-bottom: var(--sp-3);
  color: var(--link);
  background: var(--surface-3);
  border-radius: 18px;
}

.emptyStateArt svg {
  width: 28px;
  height: 28px;
}

.emptyStateTitle {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-2);
}

.emptyStateHint {
  font-size: var(--fs-md);
  color: var(--text-3);
  line-height: 1.55;
  max-width: 340px;
}

/* Message canvas ------------------------------------------------------------ */

.messagesContainer {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--sp-4) var(--sp-5) var(--sp-3);
  display: flex;
  flex-direction: column;
  position: relative;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
  touch-action: pan-y;
  /* Hide scrollbar */
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE and Edge */
}

.messagesContainer::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.jumpToCurrent {
  position: absolute;
  bottom: var(--sp-5);
  right: var(--sp-5);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  background-color: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--r-full);
  font-size: var(--fs-md);
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-2);
  transition:
    background-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease),
    box-shadow var(--t-med) var(--ease);
  z-index: 10;
}

.jumpToCurrent svg {
  width: 14px;
  height: 14px;
}

.jumpToCurrent:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-3);
}

.jumpToCurrent:active {
  transform: translateY(0);
}

/* Mobile ---------------------------------------------------------------------- */

@media (max-width: 768px) {
  .messagesContainer {
    padding: var(--sp-3) var(--sp-3) var(--sp-2);
  }

  .jumpToCurrent {
    bottom: var(--sp-3);
    right: var(--sp-3);
    padding: 8px 14px;
    font-size: var(--fs-sm);
  }

  .queryHeader {
    padding: 6px var(--sp-3);
    font-size: 11px;
  }

  .querySelection {
    font-size: 10px;
  }
}