/* =========================================================
   WIZHY WEB STUDIO — AI CHATBOT WIDGET (css/chat.css)
   Seamlessly adapts to all 4 Themes (Light, Dark, Espresso, Lune)
   Zero external dependencies. Pure vanilla CSS tokens.
========================================================= */

/* Floating Launcher Button */
.wizhy-chat-fab {
  position: fixed;
  bottom: 30px;
  right: 30px;
  height: 52px;
  padding: 0 20px 0 16px;
  border-radius: 999px;
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.16);
  cursor: pointer;
  z-index: 550;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .3s ease;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.wizhy-chat-fab:hover {
  transform: translateY(-3px) scale(1.02);
  border-color: var(--accent-1);
  box-shadow: 0 16px 42px var(--accent-1-soft);
}

.wizhy-chat-fab__icon-wrap {
  position: relative;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-1);
  color: var(--on-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.wizhy-chat-fab__icon-wrap svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.wizhy-chat-fab__status-dot {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981; /* active emerald */
  border: 1.5px solid var(--surface);
  animation: chatPulse 2s infinite;
}

@keyframes chatPulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.wizhy-chat-fab__label {
  white-space: nowrap;
}

/* Adjust Back-to-Top when chat fab is present */
.back-to-top.show {
  bottom: 92px !important;
  right: 32px !important;
}

/* Chat Window Modal */
.wizhy-chat-window {
  position: fixed;
  bottom: 95px;
  right: 30px;
  width: 380px;
  max-width: calc(100vw - 32px);
  height: 560px;
  max-height: calc(100vh - 120px);
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  border-radius: 22px;
  box-shadow: var(--shadow-lift);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 560;
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px) scale(0.94);
  transform-origin: bottom right;
  transition: opacity .35s var(--ease), transform .35s var(--ease);
  font-family: var(--font-body);
}

.wizhy-chat-window.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

/* Window Header */
.wizhy-chat-header {
  padding: 16px 20px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wizhy-chat-header__info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.wizhy-chat-header__avatar {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--accent-1);
  color: var(--on-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.wizhy-chat-header__avatar img,
.wizhy-chat-fab__icon-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.wizhy-chat-header__avatar svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.wizhy-chat-header__titles {
  display: flex;
  flex-direction: column;
}

.wizhy-chat-header__name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.wizhy-chat-header__status {
  font-size: 0.76rem;
  color: #10B981;
  display: flex;
  align-items: center;
  gap: 4px;
}

.wizhy-chat-header__status::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10B981;
}

.wizhy-chat-header__close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .2s ease;
  font-size: 1.2rem;
}

.wizhy-chat-header__close:hover {
  background: var(--border);
  color: var(--text-primary);
}

/* Chat Messages Stream */
.wizhy-chat-messages {
  flex: 1;
  padding: 20px 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scroll-behavior: smooth;
}

.wizhy-chat-messages::-webkit-scrollbar {
  width: 5px;
}
.wizhy-chat-messages::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 4px;
}

/* Individual Message Bubble */
.wizhy-msg {
  display: flex;
  flex-direction: column;
  max-width: 82%;
  animation: msgFadeIn 0.25s var(--ease);
}

@keyframes msgFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.wizhy-msg--bot {
  align-self: flex-start;
}

.wizhy-msg--user {
  align-self: flex-end;
}

.wizhy-msg__bubble {
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 0.88rem;
  line-height: 1.45;
  word-break: break-word;
}

.wizhy-msg--bot .wizhy-msg__bubble {
  background: var(--surface-2);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.wizhy-msg--bot .wizhy-msg__bubble strong {
  color: var(--accent-1);
}

.wizhy-msg--user .wizhy-msg__bubble {
  background: var(--accent-1);
  color: var(--on-accent);
  border-bottom-right-radius: 4px;
}

.wizhy-msg__time {
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 4px;
  padding: 0 4px;
}

.wizhy-msg--user .wizhy-msg__time {
  align-self: flex-end;
}

/* Typing Indicator Animation */
.wizhy-typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 16px;
  border-bottom-left-radius: 4px;
  width: fit-content;
}

.wizhy-typing-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: typingBounce 1.2s infinite ease-in-out;
}

.wizhy-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.wizhy-typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40% { transform: translateY(-5px); opacity: 1; background: var(--accent-1); }
}

/* Quick Prompt Suggestions */
.wizhy-chat-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 16px 12px 16px;
  background: var(--surface);
  border-top: 1px dashed var(--border);
}

.wizhy-chat-chip {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: all .2s ease;
  white-space: nowrap;
}

.wizhy-chat-chip:hover {
  background: var(--accent-1);
  color: var(--on-accent);
  border-color: var(--accent-1);
  transform: translateY(-1px);
}

/* Input Area */
.wizhy-chat-footer {
  padding: 12px 16px;
  background: var(--surface-2);
  border-top: 1px solid var(--border);
}

.wizhy-chat-input-bar {
  display: flex;
  align-items: center;
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  border-radius: 999px;
  padding: 4px 6px 4px 16px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.wizhy-chat-input-bar:focus-within {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px var(--accent-1-soft);
}

.wizhy-chat-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 0.88rem;
  color: var(--text-primary);
  padding: 8px 0;
}

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

.wizhy-chat-send {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-1);
  color: var(--on-accent);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform .2s ease, background .2s ease;
  flex-shrink: 0;
}

.wizhy-chat-send:hover {
  transform: scale(1.06);
}

.wizhy-chat-send svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  transform: translateX(1px);
}

.wizhy-chat-badge {
  text-align: center;
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Responsive adjustments */
@media (max-width: 480px) {
  .wizhy-chat-fab {
    bottom: 20px;
    right: 18px;
    padding: 0 12px;
    height: 48px;
  }
  .wizhy-chat-fab__label {
    display: none;
  }
  .wizhy-chat-window {
    bottom: 76px;
    right: 12px;
    left: 12px;
    width: auto;
    height: calc(100vh - 110px);
  }
  .wizhy-chat-input {
    font-size: 16px; /* Prevents auto-zoom on iOS Safari */
  }
  .back-to-top.show {
    bottom: 76px !important;
    right: 18px !important;
  }
}