/*
 * Kaval.AI chat widget — styling.
 *
 * A self-contained dark "console" chat panel that matches the playground
 * widget (kaval-playground.css) so the two read as one product when placed
 * side by side. It reuses the playground's --kaval-pg-* custom properties when
 * that stylesheet is present, and falls back to the same values when the chat
 * widget is used on its own.
 */

.kaval-chat {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  min-height: 360px;
  background: var(--kaval-pg-bg, #1e1e2e);
  color: var(--kaval-pg-fg, #cdd6f4);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  /* Anchor to a fixed base, like the playground, so a host page that scales
   * the root font (e.g. the Material docs theme) doesn't inflate the widget. */
  font-size: 13px;
  line-height: 1.5;
  border: 1px solid var(--kaval-pg-border, #313244);
  border-radius: 0.6rem;
  overflow: hidden;
  overscroll-behavior: contain;
}
.kaval-chat * {
  box-sizing: border-box;
}

/* Header — mirrors .kaval-pg-header */
.kaval-chat-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.8rem;
  background: var(--kaval-pg-bg-2, #181825);
  border-bottom: 1px solid var(--kaval-pg-border, #313244);
}
.kaval-chat-title {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 1em;
  font-weight: 700;
}
.kaval-chat-title .kaval-chat-logo {
  width: 1.1rem;
  height: 1.1rem;
  display: block;
}
.kaval-chat-status {
  margin-left: auto;
  font-size: 0.85em;
  color: var(--kaval-pg-muted, #a6adc8);
  font-style: italic;
}
.kaval-chat-icon {
  background: transparent;
  border: none;
  color: var(--kaval-pg-muted, #a6adc8);
  font-size: 1.05em;
  line-height: 1;
  cursor: pointer;
  padding: 0.15rem 0.35rem;
  border-radius: 0.35rem;
}
.kaval-chat-icon:hover {
  color: var(--kaval-pg-fg, #cdd6f4);
  background: var(--kaval-pg-border, #313244);
}

/* Transcript — the scrolling message list */
.kaval-chat-log {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.kaval-chat-msg {
  display: flex;
}
.kaval-chat-msg--user {
  justify-content: flex-end;
}
.kaval-chat-msg--assistant,
.kaval-chat-msg--error {
  justify-content: flex-start;
}

.kaval-chat-bubble {
  max-width: 82%;
  padding: 0.5rem 0.7rem;
  border-radius: 0.7rem;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.95em;
  line-height: 1.45;
}
.kaval-chat-msg--user .kaval-chat-bubble {
  background: var(--kaval-pg-accent, #89b4fa);
  color: var(--kaval-pg-bg, #1e1e2e);
  border-bottom-right-radius: 0.2rem;
}
.kaval-chat-msg--assistant .kaval-chat-bubble {
  background: var(--kaval-pg-bg-2, #181825);
  border: 1px solid var(--kaval-pg-border, #313244);
  border-bottom-left-radius: 0.2rem;
}
.kaval-chat-msg--error .kaval-chat-bubble {
  background: color-mix(in srgb, var(--kaval-pg-error, #f38ba8) 16%, transparent);
  border: 1px solid var(--kaval-pg-error, #f38ba8);
  color: var(--kaval-pg-error, #f38ba8);
  border-bottom-left-radius: 0.2rem;
}

/* Quick-reply chips rendered from a structured `choices` list */
.kaval-chat-choices {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-left: 0.1rem;
}
.kaval-chat-choice {
  background: transparent;
  color: var(--kaval-pg-accent, #89b4fa);
  border: 1px solid var(--kaval-pg-accent, #89b4fa);
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
  font-family: inherit;
  font-size: 0.88em;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
}
.kaval-chat-choice:hover {
  background: var(--kaval-pg-accent, #89b4fa);
  color: var(--kaval-pg-bg, #1e1e2e);
}

/* Typing indicator — three pulsing dots in an assistant bubble */
.kaval-chat-typing {
  display: inline-flex;
  gap: 0.28rem;
  align-items: center;
}
.kaval-chat-typing span {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--kaval-pg-muted, #a6adc8);
  opacity: 0.4;
  animation: kaval-chat-blink 1.2s infinite ease-in-out;
}
.kaval-chat-typing span:nth-child(2) {
  animation-delay: 0.2s;
}
.kaval-chat-typing span:nth-child(3) {
  animation-delay: 0.4s;
}
@keyframes kaval-chat-blink {
  0%, 80%, 100% { opacity: 0.3; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-0.15rem); }
}
@media (prefers-reduced-motion: reduce) {
  .kaval-chat-typing span {
    animation: none;
    opacity: 0.6;
  }
}

/* Composer — textarea + send button */
.kaval-chat-composer {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  padding: 0.6rem 0.8rem;
  background: var(--kaval-pg-bg-2, #181825);
  border-top: 1px solid var(--kaval-pg-border, #313244);
}
.kaval-chat-input {
  flex: 1 1 auto;
  min-width: 0;
  resize: none;
  max-height: 160px;
  background: var(--kaval-pg-bg, #1e1e2e);
  color: var(--kaval-pg-fg, #cdd6f4);
  border: 1px solid var(--kaval-pg-border, #313244);
  border-radius: 0.5rem;
  padding: 0.45rem 0.6rem;
  font-family: inherit;
  font-size: 0.95em;
  line-height: 1.45;
}
.kaval-chat-input:focus {
  outline: none;
  border-color: var(--kaval-pg-accent, #89b4fa);
}
.kaval-chat-send {
  flex: 0 0 auto;
  background: var(--kaval-pg-accent, #89b4fa);
  color: var(--kaval-pg-bg, #1e1e2e);
  border: none;
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  font-weight: 700;
  font-size: 0.95em;
  cursor: pointer;
}
.kaval-chat-send:hover:not(:disabled) {
  background: var(--kaval-pg-accent-hover, #74c7ec);
}
.kaval-chat-send:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}