/* ============================================================================
   ITU Maritime Publications — Chatbot Widget
   ============================================================================ */

/* ─── Widget Container ───────────────────────────────────────────────────────── */
.chat-widget {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-4);
}

/* ─── Toggle Button ──────────────────────────────────────────────────────────── */
.chat-toggle {
  position: relative;
  width: 58px;
  height: 58px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgb(37 99 235 / 0.45);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  z-index: 1001;
  flex-shrink: 0;
}
.chat-toggle:hover {
  background: var(--color-accent-hover);
  transform: scale(1.06);
  box-shadow: 0 6px 28px rgb(37 99 235 / 0.55);
}
.chat-toggle:active { transform: scale(0.97); }

/* Pulse ring animation when closed */
.chat-toggle::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-accent);
  opacity: 0;
  animation: chatPulse 3s ease-in-out infinite;
}
.chat-widget--open .chat-toggle::before { animation: none; }

@keyframes chatPulse {
  0%,  100% { opacity: 0; transform: scale(1); }
  50%        { opacity: 0.4; transform: scale(1.15); }
}

.chat-toggle__icon {
  width: 24px;
  height: 24px;
  position: absolute;
  transition: opacity var(--transition-base), transform var(--transition-base);
}
.chat-toggle__icon--open {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}
.chat-toggle__icon--close {
  opacity: 0;
  transform: scale(0.6) rotate(-90deg);
}
.chat-widget--open .chat-toggle__icon--open {
  opacity: 0;
  transform: scale(0.6) rotate(90deg);
}
.chat-widget--open .chat-toggle__icon--close {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

/* ─── Chat Panel ─────────────────────────────────────────────────────────────── */
.chat-panel {
  position: relative;
  width: 368px;
  height: 540px;
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl), 0 0 0 1px rgb(0 0 0 / 0.05);
  display: flex;
  flex-direction: column;
  overflow: hidden;

  /* Closed state */
  opacity: 0;
  transform: translateY(16px) scale(0.96);
  pointer-events: none;
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
  transform-origin: bottom right;
}
.chat-widget--open .chat-panel {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* ─── Panel Header ───────────────────────────────────────────────────────────── */
.chat-panel__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  flex-shrink: 0;
}
.chat-panel__avatar {
  font-size: 1.4rem;
  background: rgb(255 255 255 / 0.14);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgb(255 255 255 / 0.15);
}
.chat-panel__title { flex: 1; }
.chat-panel__title strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
}
.chat-panel__status {
  font-size: var(--text-xs);
  color: rgb(255 255 255 / 0.65);
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 2px;
}
.chat-panel__status::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--color-success);
  box-shadow: 0 0 6px var(--color-success);
  flex-shrink: 0;
}
.chat-panel__close {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgb(255 255 255 / 0.6);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  line-height: 1;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.chat-panel__close:hover {
  color: var(--color-white);
  background: rgb(255 255 255 / 0.12);
}

/* ─── Clear-history Confirm Overlay ─────────────────────────────────────────── */
.chat-confirm[hidden] { display: none; }

.chat-confirm {
  position: absolute;
  inset: 0;
  background: rgb(10 36 71 / 0.55);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  border-radius: var(--radius-2xl);
  animation: fadeIn 0.15s ease;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.chat-confirm__box {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin: var(--space-6);
  box-shadow: var(--shadow-xl);
  text-align: center;
}

.chat-confirm__text {
  font-size: var(--text-sm);
  color: var(--color-gray-700);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-5);
}

.chat-confirm__actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
}

.chat-confirm__btn {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
}
.chat-confirm__btn--cancel {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  border: 1.5px solid var(--color-gray-200);
}
.chat-confirm__btn--cancel:hover {
  background: var(--color-gray-200);
}
.chat-confirm__btn--confirm {
  background: var(--color-error);
  color: var(--color-white);
}
.chat-confirm__btn--confirm:hover {
  background: #dc2626;
  transform: translateY(-1px);
}

/* ─── Messages Area ──────────────────────────────────────────────────────────── */
.chat-panel__messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  scroll-behavior: smooth;
  background: var(--color-gray-50);
}
.chat-panel__messages::-webkit-scrollbar      { width: 4px; }
.chat-panel__messages::-webkit-scrollbar-track { background: transparent; }
.chat-panel__messages::-webkit-scrollbar-thumb { background: var(--color-gray-200); border-radius: var(--radius-full); }

/* ─── Message Bubbles ────────────────────────────────────────────────────────── */
.chat-message {
  display: flex;
  flex-direction: column;
  animation: messageIn 0.2s ease;
}
@keyframes messageIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.chat-message--user { align-items: flex-end; }
.chat-message--bot  { align-items: flex-start; }

.chat-message__bubble {
  max-width: 82%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  word-break: break-word;
}
.chat-message--user .chat-message__bubble {
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-xl) var(--radius-xl) var(--radius-sm) var(--radius-xl);
}
.chat-message--bot .chat-message__bubble {
  background: var(--color-white);
  color: var(--color-gray-800);
  border-radius: var(--radius-sm) var(--radius-xl) var(--radius-xl) var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-100);
}

/* ─── Typing Indicator ───────────────────────────────────────────────────────── */
.chat-typing {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: var(--space-3) var(--space-4);
  background: var(--color-white);
  border-radius: var(--radius-sm) var(--radius-xl) var(--radius-xl) var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-100);
}
.chat-typing span {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--color-gray-300);
  animation: typingBounce 1.4s ease-in-out infinite;
}
.chat-typing span:nth-child(2) { animation-delay: 0.18s; }
.chat-typing span:nth-child(3) { animation-delay: 0.36s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0);  background: var(--color-gray-300); }
  30%            { transform: translateY(-6px); background: var(--color-accent); }
}

/* ─── Human Needed Card ──────────────────────────────────────────────────────── */
.chat-human-needed {
  max-width: 88%;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm) var(--radius-xl) var(--radius-xl) var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}
.chat-human-needed p {
  font-size: var(--text-sm);
  color: var(--color-gray-700);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
}
.chat-human-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: #f97316;
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast);
  border: none;
  cursor: pointer;
}
.chat-human-btn:hover { background: #ea580c; transform: translateY(-1px); }

/* ─── Input Row ──────────────────────────────────────────────────────────────── */
.chat-panel__input {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-gray-100);
  background: var(--color-white);
  flex-shrink: 0;
}

#chatInput {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  color: var(--color-gray-800);
  background: var(--color-gray-50);
  min-width: 0;
}
#chatInput::placeholder { color: var(--color-gray-400); }
#chatInput:focus {
  border-color: var(--color-accent);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.12);
}

.chat-send-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}
.chat-send-btn:hover  { background: var(--color-accent-hover); transform: scale(1.05); }
.chat-send-btn:active { transform: scale(0.96); }
.chat-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}
.chat-send-btn svg { width: 16px; height: 16px; }

/* ─── Markdown rendering inside bot bubbles ─────────────────────────────────── */
.chat-message__bubble--markdown {
  /* Give it a touch more room so content breathes */
  padding: var(--space-4);
}

/* Remove the default paragraph margin on the very first / last child */
.chat-message__bubble--markdown > *:first-child { margin-top: 0; }
.chat-message__bubble--markdown > *:last-child  { margin-bottom: 0; }

.chat-message__bubble--markdown p {
  margin: 0 0 var(--space-2);
  line-height: var(--leading-relaxed);
}

.chat-message__bubble--markdown h1,
.chat-message__bubble--markdown h2,
.chat-message__bubble--markdown h3 {
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
  margin: var(--space-4) 0 var(--space-2);
  line-height: var(--leading-snug);
}
.chat-message__bubble--markdown h1 { font-size: var(--text-base); }
.chat-message__bubble--markdown h2 { font-size: var(--text-sm); }
.chat-message__bubble--markdown h3 { font-size: var(--text-sm); color: var(--color-gray-700); }

.chat-message__bubble--markdown ul,
.chat-message__bubble--markdown ol {
  padding-left: var(--space-5);
  margin: var(--space-2) 0 var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.chat-message__bubble--markdown ul { list-style: disc; }
.chat-message__bubble--markdown ol { list-style: decimal; }
.chat-message__bubble--markdown li {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-700);
}

.chat-message__bubble--markdown strong {
  font-weight: var(--weight-semibold);
  color: var(--color-gray-800);
}
.chat-message__bubble--markdown em {
  font-style: italic;
  color: var(--color-gray-600);
}

.chat-message__bubble--markdown a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-all;
}
.chat-message__bubble--markdown a:hover { color: var(--color-accent-hover); }

.chat-message__bubble--markdown code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.8em;
  background: var(--color-gray-100);
  color: var(--color-primary);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-gray-200);
}

.chat-message__bubble--markdown pre {
  background: var(--color-gray-100);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  overflow-x: auto;
  margin: var(--space-2) 0;
  border: 1px solid var(--color-gray-200);
}
.chat-message__bubble--markdown pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: var(--text-xs);
  color: var(--color-gray-800);
}

.chat-message__bubble--markdown blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-3);
  margin: var(--space-2) 0;
  color: var(--color-gray-600);
  font-style: italic;
}

.chat-message__bubble--markdown hr {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: var(--space-3) 0;
}

/* ─── Mobile ─────────────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .chat-widget {
    bottom: var(--space-4);
    right: var(--space-4);
  }
  .chat-panel {
    width: calc(100vw - var(--space-8));
    height: 70vh;
    max-height: 520px;
  }
}