/**
 * Chatbot slide-out panel — uses design tokens (load tokens before this).
 */

:root {
  --chat-panel-width: 460px;
  --chat-form-control-height: 52px;
}

/* Nav trigger: match existing nav link style */
.page-header__nav .page-header__nav-link {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-mono);
  line-height: var(--line-height-normal);
  color: var(--color-text-muted);
  text-transform: uppercase;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  transition: color var(--duration-normal) var(--ease-out);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-header__nav .page-header__nav-link-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5em;
  height: 1.5em;
  flex-shrink: 0;
  box-sizing: border-box;
  border-radius: 50%;
  transition: background var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
  perspective: 120px;
}

.page-header__nav .page-header__nav-link .page-header__nav-link-icon {
  width: 70%;
  height: 70%;
  display: block;
  color: inherit;
  transform-origin: center center;
}

#chat-open:hover .page-header__nav-link-icon {
  animation: chat-icon-spin 0.5s var(--ease-out);
}

@keyframes chat-icon-spin {
  0% {
    transform: rotateY(0deg);
  }
  100% {
    transform: rotateY(360deg);
  }
}

.page-header__nav .page-header__nav-link:hover {
  color: var(--color-accent);
}

#chat-open {
  text-transform: none;
}

/* Active state: icon only with light orange circle */
body.chat-panel-open #chat-open .page-header__nav-link-label {
  display: none;
}

body.chat-panel-open #chat-open .page-header__nav-link-icon-wrap {
  background: rgba(230, 95, 46, 0.18);
}

body.chat-panel-open #chat-open:hover .page-header__nav-link-icon-wrap {
  animation: chat-circle-scale 0.5s var(--ease-out);
}

@keyframes chat-circle-scale {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
  100% {
    transform: scale(1);
  }
}

body.chat-panel-open #chat-open {
  color: var(--color-accent);
}

/* Layout wrapper: pushed left when panel is open */
.page-layout {
  transition: margin-right var(--duration-normal) var(--ease-out);
}

body.chat-panel-open .page-layout {
  margin-right: var(--chat-panel-width);
}

@media (max-width: 480px) {
  body.chat-panel-open .page-layout {
    margin-right: 90vw;
  }
}

/* Panel container */
.chat-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: var(--chat-panel-width);
  max-width: 90vw;
  height: 100vh;
  background: var(--color-bg-subtle);
  border-left: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  visibility: hidden;
  transition: transform var(--duration-normal) var(--ease-out),
    visibility var(--duration-normal);
  z-index: 100;
}

.chat-panel.is-open {
  transform: translateX(0);
  visibility: visible;
}

/* Panel header — match main nav height so the border aligns */
.chat-panel__header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  min-height: var(--header-height);
  padding: 0 var(--space-4);
  border-bottom: 1px solid var(--color-border);
  box-sizing: border-box;
}

.chat-panel__title {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-mono);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-muted);
  margin: 0;
}

.chat-panel__header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.chat-panel__refresh,
.chat-panel__close {
  background: none;
  border: none;
  padding: var(--space-1);
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--duration-normal) var(--ease-out);
  line-height: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.chat-panel__refresh svg,
.chat-panel__close svg {
  width: 16px;
  height: 16px;
}

.chat-panel__refresh:hover,
.chat-panel__close:hover {
  color: var(--color-accent);
}

.chat-panel__refresh:focus-visible,
.chat-panel__close:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

/* Scrollable message area */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Message bubble — same body text as rest of site */
.chat-message {
  max-width: 85%;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
}

.chat-message--bot p {
  margin: 0;
}

.chat-message--bot p + p {
  margin-top: var(--space-2);
}

.chat-message--user {
  align-self: flex-end;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.chat-message--bot {
  align-self: flex-start;
  background: none;
  border: none;
  padding-left: 0;
  padding-right: 0;
  color: var(--color-text);
}

.chat-message--bot.chat-message--intro {
  animation: chat-message-intro-in 0.85s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Quick prompts: entrance animation when panel opens */
@keyframes chat-intro-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes chat-message-intro-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chat-panel.is-open .chat-quick-prompts:not(.chat-quick-prompts--hidden) .chat-quick-prompts__heading {
  animation: chat-intro-in 0.45s var(--ease-out) 0.12s both;
}

.chat-panel.is-open .chat-quick-prompts:not(.chat-quick-prompts--hidden) .chat-quick-prompts__option:nth-child(2) {
  animation: chat-intro-in 0.45s var(--ease-out) 0.2s both;
}

.chat-panel.is-open .chat-quick-prompts:not(.chat-quick-prompts--hidden) .chat-quick-prompts__option:nth-child(3) {
  animation: chat-intro-in 0.45s var(--ease-out) 0.28s both;
}

.chat-panel.is-open .chat-quick-prompts:not(.chat-quick-prompts--hidden) .chat-quick-prompts__option:nth-child(4) {
  animation: chat-intro-in 0.45s var(--ease-out) 0.36s both;
}

.chat-panel.is-open .chat-quick-prompts:not(.chat-quick-prompts--hidden) .chat-quick-prompts__option:nth-child(5) {
  animation: chat-intro-in 0.45s var(--ease-out) 0.44s both;
}

/* Quick prompts (default state) */
.chat-quick-prompts {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-left: calc(var(--space-4) - var(--space-3));
  transition: opacity 0.25s var(--ease-out), transform 0.25s var(--ease-out),
    max-height 0.3s var(--ease-out), padding 0.25s var(--ease-out), margin 0.25s var(--ease-out);
  max-height: 500px;
  overflow: hidden;
}

.chat-quick-prompts--hidden {
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  margin-top: 0;
  margin-bottom: 0;
  gap: 0;
}

.chat-quick-prompts__heading {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-2) 0;
}

.chat-quick-prompts__option {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3) var(--space-2) var(--space-2);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  text-align: left;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--duration-normal) var(--ease-out),
    color var(--duration-normal) var(--ease-out);
}

.chat-quick-prompts__option:hover {
  background: rgba(230, 95, 46, 0.12);
  color: var(--color-accent);
}

.chat-quick-prompts__option:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.chat-quick-prompts__icon {
  display: inline-flex;
}
.chat-quick-prompts__icon svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: inherit;
}

/* Typing indicator */
.chat-typing {
  align-self: flex-start;
  padding: var(--space-2) 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.chat-typing.is-hidden {
  display: none;
}

.chat-typing__pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
  animation: chat-typing-pulse 2.5s ease-in-out infinite both;
}

.chat-typing__text {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  min-width: 10em;
  transition: opacity 0.2s var(--ease-out);
  background: linear-gradient(
    90deg,
    var(--color-text-muted) 0%,
    var(--color-text-muted) 35%,
    #f0eeec 50%,
    var(--color-text-muted) 65%,
    var(--color-text-muted) 100%
  );
  background-size: 200% 100%;
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  animation: chat-typing-text-wave 1.25s linear infinite;
}

@keyframes chat-typing-text-wave {
  0%   { background-position: 100% 0; }
  100% { background-position: 0% 0; }
}

.chat-typing__text--fade {
  opacity: 0;
}

@keyframes chat-typing-pulse {
  0%, 100% { transform: scale(1); opacity: 1; box-shadow: 0 0 0 0 rgba(230, 95, 46, 0.4); }
  50% { transform: scale(1.35); opacity: 0.9; box-shadow: 0 0 8px 2px rgba(230, 95, 46, 0.35); }
}

/* Input footer */
.chat-panel__footer {
  flex-shrink: 0;
  padding: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.chat-form {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.chat-form__input {
  flex: 1;
  height: var(--chat-form-control-height);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  padding: 0 var(--space-3) 0 var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--duration-normal) var(--ease-out);
}

.chat-form__input::placeholder {
  color: var(--color-text-muted);
}

.chat-form__input:focus {
  outline: none;
  border-color: var(--color-text);
}

.chat-form__submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  padding: 0;
  background: var(--color-bg-subtle);
  color: var(--color-text-muted);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--duration-normal) var(--ease-out),
    color var(--duration-normal) var(--ease-out),
    opacity var(--duration-normal) var(--ease-out);
}

.chat-form__submit:hover:not(:disabled) {
  background: var(--color-bg-subtle);
  color: var(--color-text-muted);
}

.chat-form__submit:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.chat-form--has-text .chat-form__submit {
  background: var(--color-accent);
  color: #fff;
}

.chat-form--has-text .chat-form__submit:hover:not(:disabled) {
  background: var(--color-accent-hover);
  color: #fff;
}

.chat-form--has-text .chat-form__submit:disabled {
  opacity: 1;
}

.chat-form__submit:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

.chat-form__submit svg {
  width: 18px;
  height: 18px;
}