/* ==========================================================================
   CHATBOT.CSS — CONVERSATIONAL AI COMPONENT SPECIFICATIONS
   Project: Personal Portfolio Website — Shanto Paul (DIU)
   Architecture: UI/UX Pro Max AI-Native Interface + Mobile Bottom-Sheet
   Standards: WCAG 2.1 AA Keyboard Access, Non-Hallucination Visual Signaling
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Floating Chat Launcher Widget
   -------------------------------------------------------------------------- */
.chat-launcher {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background: var(--gradient-chatbot);
  color: #FFFFFF;
  box-shadow: var(--shadow-xl), var(--shadow-primary-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 1050;
  border: none;
  min-width: 44px;
  min-height: 44px;
  transition: transform var(--transition-normal), 
              box-shadow var(--transition-normal);
}

.chat-launcher:hover {
  transform: scale(1.08) rotate(4deg);
  box-shadow: var(--shadow-xl), var(--shadow-accent-glow);
}

.chat-launcher-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 14px;
  height: 14px;
  background: var(--secondary);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-primary);
}

/* --------------------------------------------------------------------------
   2. Desktop & Tablet Floating Chat Panel
   -------------------------------------------------------------------------- */
.chat-panel {
  position: fixed;
  bottom: 6.5rem;
  right: 2rem;
  width: 380px;
  max-width: calc(100vw - 3rem);
  height: 540px;
  max-height: calc(100vh - 8rem);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 1040;
  transform: translateY(20px) scale(0.95);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), 
              transform var(--transition-normal), 
              visibility var(--transition-normal);
}

.chat-panel.active {
  transform: translateY(0) scale(1);
  opacity: 1;
  visibility: visible;
}

/* --------------------------------------------------------------------------
   3. Chat Header & Verified Boundary Signaling
   -------------------------------------------------------------------------- */
.chat-header {
  background: var(--gradient-chatbot);
  color: #FFFFFF;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.chat-header-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.chat-status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--secondary);
  box-shadow: 0 0 8px var(--secondary);
}

.chat-header-text {
  display: flex;
  flex-direction: column;
}

.chat-header-title h3 {
  font-size: 1rem;
  color: #FFFFFF;
  font-weight: 700;
  margin: 0;
  line-height: 1.2;
}

.chat-header-model {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  letter-spacing: 0.02em;
}

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

.chat-header-btn {
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.chat-header-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

/* Domain-Bounded Scope Banner */
.chat-scope-banner {
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  padding: 0.4rem 0.75rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  text-align: center;
  font-weight: 500;
}

.chat-scope-banner i {
  color: var(--secondary);
  font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   4. Conversation Stream & Message Bubbles
   -------------------------------------------------------------------------- */
.chat-body {
  flex: 1;
  padding: var(--space-md);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  background: var(--bg-secondary);
  scroll-behavior: smooth;
}

/* Custom Scrollbar for Chat Body */
.chat-body::-webkit-scrollbar {
  width: 5px;
}

.chat-body::-webkit-scrollbar-track {
  background: transparent;
}

.chat-body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-full);
}

.chat-bubble {
  max-width: 85%;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  line-height: 1.5;
  border-radius: var(--radius-lg);
  word-break: break-word;
  animation: fadeIn 0.25s ease-out;
}

.chat-bubble-user {
  background: var(--primary);
  color: #FFFFFF;
  align-self: flex-end;
  border-bottom-right-radius: var(--radius-xs);
  box-shadow: var(--shadow-sm);
}

.chat-bubble-bot {
  background: var(--surface);
  color: var(--text-primary);
  align-self: flex-start;
  border: 1px solid var(--border);
  border-bottom-left-radius: var(--radius-xs);
  box-shadow: var(--shadow-sm);
}

.chat-bubble-bot strong {
  color: var(--primary);
}

.chat-bubble-bot ul,
.chat-bubble-bot ol {
  padding-left: 1.25rem;
  margin: 0.4rem 0;
}

.chat-bubble-bot li {
  margin-bottom: 0.25rem;
}

.chat-bubble-bot code,
.chat-inline-code {
  background: var(--bg-tertiary);
  color: var(--secondary);
  padding: 0.15rem 0.35rem;
  border-radius: var(--radius-sm);
  font-family: monospace;
  font-size: 0.8em;
}

.chat-bubble-bot a,
.chat-link {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.chat-bubble-bot a:hover,
.chat-link:hover {
  color: var(--primary-hover);
}

.chat-bubble-fallback {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--text-primary);
}

.chat-msg-time {
  display: block;
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-align: right;
}

.chat-bubble-user .chat-msg-time {
  color: rgba(255, 255, 255, 0.75);
}

/* Animated 3-Dot Typing Indicator */
.typing-indicator {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0.6rem 0.9rem;
  align-self: flex-start;
}

.typing-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  animation: typingBounce 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }
.typing-dot:nth-child(3) { animation-delay: 0s; }

/* --------------------------------------------------------------------------
   5. Suggested Question Chips
   -------------------------------------------------------------------------- */
.chat-suggestions-wrap {
  padding: 0.5rem var(--space-md);
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.chat-suggestions {
  display: flex;
  overflow-x: auto;
  gap: 0.4rem;
  padding-bottom: 4px;
  scrollbar-width: none; /* Firefox */
}

.chat-suggestions::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.prompt-pill {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.prompt-pill:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

/* --------------------------------------------------------------------------
   6. Input Controls & Disclaimer
   -------------------------------------------------------------------------- */
.chat-footer {
  padding: var(--space-sm) var(--space-md);
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chat-input-row {
  display: flex;
  gap: var(--space-xs);
  align-items: center;
}

.chat-input {
  flex: 1;
  padding: 0.65rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.chat-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.chat-send-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: #FFFFFF;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.chat-send-btn:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
}

.chat-send-btn:disabled {
  background: var(--text-muted);
  cursor: not-allowed;
  transform: none;
  opacity: 0.6;
}

.chat-disclaimer {
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

/* --------------------------------------------------------------------------
   7. Mobile Viewport Slide-up Bottom-Sheet (< 768px)
   -------------------------------------------------------------------------- */
@media (max-width: 767.98px) {
  .chat-panel {
    bottom: 0;
    right: 0;
    left: 0;
    width: 100%;
    max-width: 100%;
    height: 85vh;
    height: 85dvh;
    max-height: 85dvh;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    border-bottom: none;
    transform: translateY(100%);
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.35);
  }

  .chat-panel.active {
    transform: translateY(0);
  }

  .chat-drag-handle {
    width: 40px;
    height: 4px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-full);
    margin: 6px auto 4px auto;
  }
}

/* --------------------------------------------------------------------------
   8. Injected Badge & Drawer Suppression
   -------------------------------------------------------------------------- */
[data-netlify-deploy-preview],
.netlify-badge,
#netlify-drawer,
iframe#netlify-drawer,
div[class*="netlify-badge"],
a[href*="netlify.com"][style*="fixed"],
div[data-testid*="netlify-badge"] {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}