/* ==========================================================================
   Chatbot Widget Styles
   AI chatbot floating panel with glass morphism design
   ========================================================================== */

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */

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

@keyframes chatbot-typing-dot {
  0%, 60%, 100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  30% {
    opacity: 1;
    transform: translateY(-4px);
  }
}

/* --------------------------------------------------------------------------
   1. Floating Action Button (FAB) — .chatbot-trigger
   -------------------------------------------------------------------------- */

.chatbot-trigger {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  width: 56px;
  height: 56px;
  border: none;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  color: var(--color-white);
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast);
}

.chatbot-trigger:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.chatbot-trigger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.chatbot-trigger i {
  transition: transform var(--transition-base);
}

.chatbot-trigger--active i {
  transform: rotate(90deg);
}

/* --------------------------------------------------------------------------
   2. Chat Panel — .chatbot-panel
   -------------------------------------------------------------------------- */

.chatbot-panel {
  position: fixed;
  bottom: 92px;
  right: 24px;
  z-index: 9998;
  width: 400px;
  height: 520px;
  max-height: calc(100vh - 120px);
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-xl);

  /* Glass-premium pattern */
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.6));
  backdrop-filter: saturate(200%) blur(30px);
  -webkit-backdrop-filter: saturate(200%) blur(30px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 0 1px 0 rgba(0, 0, 0, 0.04),
              0 20px 40px rgba(0, 0, 0, 0.08),
              inset 0 0 40px rgba(255, 255, 255, 0.2);

  /* Hidden by default */
  opacity: 0;
  pointer-events: none;
  transform: scale(0.9) translateY(20px);
  transition: opacity var(--transition-spring),
              transform var(--transition-spring);
}

.chatbot-panel--open {
  opacity: 1;
  pointer-events: auto;
  transform: scale(1) translateY(0);
}

/* --------------------------------------------------------------------------
   3. Header — .chatbot-header
   -------------------------------------------------------------------------- */

.chatbot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) var(--space-sm);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  flex-shrink: 0;
}

.chatbot-header-info {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.chatbot-header-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-black);
  line-height: 1.2;
}

.chatbot-header-status {
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 500;
}

.chatbot-header-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.chatbot-header-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-gray-400);
  font-size: 1rem;
  cursor: pointer;
  transition: background var(--transition-fast),
              color var(--transition-fast);
}

.chatbot-header-close:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-500);
}

.chatbot-header-close:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   4. Messages Container — .chatbot-messages
   -------------------------------------------------------------------------- */

.chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-sm);
  scroll-behavior: smooth;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Custom scrollbar */
.chatbot-messages::-webkit-scrollbar {
  width: 6px;
}

.chatbot-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chatbot-messages::-webkit-scrollbar-thumb {
  background: var(--color-gray-300);
  border-radius: var(--radius-pill);
}

.chatbot-messages::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-400);
}

/* Firefox scrollbar */
.chatbot-messages {
  scrollbar-width: thin;
  scrollbar-color: var(--color-gray-300) transparent;
}

/* --------------------------------------------------------------------------
   5. Message Bubbles — .chatbot-message
   -------------------------------------------------------------------------- */

.chatbot-message {
  max-width: 80%;
  padding: 12px 16px;
  font-size: 0.9rem;
  line-height: 1.5;
  word-wrap: break-word;
  animation: chatbot-message-in 0.3s ease-out;
}

/* User messages — right-aligned, accent background */
.chatbot-message--user {
  align-self: flex-end;
  background: var(--gradient-accent);
  color: var(--color-white);
  border-radius: 18px 18px 4px 18px;
}

/* Assistant messages — left-aligned, light gray background */
.chatbot-message--assistant {
  align-self: flex-start;
  background: var(--color-gray-100);
  color: var(--color-black);
  border-radius: 18px 18px 18px 4px;
}

/* Error messages */
.chatbot-message--error {
  color: var(--color-error);
  font-style: italic;
}

/* Inline markdown styles */
.chatbot-message--assistant code {
  background: rgba(0, 0, 0, 0.06);
  padding: 2px 5px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85em;
}

.chatbot-message--assistant a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-light);
}

.chatbot-message--assistant a:hover {
  text-decoration-color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   6. Input Area — .chatbot-input-area
   -------------------------------------------------------------------------- */

.chatbot-input-area {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  flex-shrink: 0;
}

.chatbot-input {
  flex: 1;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-pill);
  padding: 10px 16px;
  font-family: var(--font-primary);
  font-size: 0.9rem;
  color: var(--color-black);
  background: var(--color-white);
  outline: none;
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

.chatbot-input::placeholder {
  color: var(--color-gray-400);
}

.chatbot-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.chatbot-send {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  color: var(--color-white);
  font-size: 0.9rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast),
              opacity var(--transition-fast);
}

.chatbot-send:hover {
  transform: scale(1.08);
  box-shadow: var(--shadow-sm);
}

.chatbot-send:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.chatbot-send:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* --------------------------------------------------------------------------
   7. Suggestion Chips — .chatbot-suggestions
   -------------------------------------------------------------------------- */

.chatbot-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 var(--space-sm) var(--space-xs);
}

.chatbot-suggestion {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-gray-500);
  font-family: var(--font-primary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: background var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast);
}

.chatbot-suggestion:hover {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.chatbot-suggestion:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   8. Typing Indicator — .chatbot-typing
   -------------------------------------------------------------------------- */

.chatbot-typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  align-self: flex-start;
  background: var(--color-gray-100);
  border-radius: 18px 18px 18px 4px;
  max-width: 80%;
}

.chatbot-typing-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
  background: var(--color-gray-400);
  animation: chatbot-typing-dot 1.4s infinite ease-in-out;
}

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

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

/* --------------------------------------------------------------------------
   9. Welcome Message — .chatbot-welcome
   -------------------------------------------------------------------------- */

.chatbot-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-md) var(--space-sm);
  gap: var(--space-xs);
}

.chatbot-welcome-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.4rem;
  margin-bottom: 4px;
}

.chatbot-welcome-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-black);
}

.chatbot-welcome-text {
  font-size: 0.85rem;
  color: var(--color-gray-400);
  line-height: 1.5;
  max-width: 280px;
}

/* ==========================================================================
   Dark Theme Overrides
   ========================================================================== */

/* Panel — dark glass effect */
:root[data-theme="dark"] .chatbot-panel {
  background: linear-gradient(135deg, rgba(18, 18, 18, 0.95), rgba(18, 18, 18, 0.9));
  backdrop-filter: saturate(200%) blur(30px);
  -webkit-backdrop-filter: saturate(200%) blur(30px);
  border: 1px solid var(--theme-border);
  box-shadow: 0 0 1px 0 rgba(0, 0, 0, 0.2),
              0 20px 40px rgba(0, 0, 0, 0.4),
              inset 0 0 40px rgba(255, 255, 255, 0.02);
}

/* Header */
:root[data-theme="dark"] .chatbot-header {
  border-bottom-color: var(--theme-border);
}

:root[data-theme="dark"] .chatbot-header-title {
  color: var(--theme-text);
}

:root[data-theme="dark"] .chatbot-header-status {
  color: var(--theme-accent);
}

:root[data-theme="dark"] .chatbot-header-close {
  color: var(--theme-text-muted);
}

:root[data-theme="dark"] .chatbot-header-close:hover {
  background: var(--theme-surface-alt);
  color: var(--theme-text);
}

/* Messages container — scrollbar */
:root[data-theme="dark"] .chatbot-messages::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
}

:root[data-theme="dark"] .chatbot-messages::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

:root[data-theme="dark"] .chatbot-messages {
  scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

/* Assistant messages — dark surface */
:root[data-theme="dark"] .chatbot-message--assistant {
  background: var(--theme-surface-alt);
  color: var(--theme-text);
}

/* Inline markdown — dark */
:root[data-theme="dark"] .chatbot-message--assistant code {
  background: rgba(255, 255, 255, 0.08);
}

:root[data-theme="dark"] .chatbot-message--assistant a {
  color: var(--theme-accent);
}

/* Input area */
:root[data-theme="dark"] .chatbot-input-area {
  border-top-color: var(--theme-border);
}

:root[data-theme="dark"] .chatbot-input {
  background: rgba(6, 16, 28, 0.9);
  border-color: var(--theme-border);
  color: var(--theme-text);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.35);
}

:root[data-theme="dark"] .chatbot-input::placeholder {
  color: var(--theme-text-muted);
}

:root[data-theme="dark"] .chatbot-input:focus {
  border-color: var(--theme-accent);
  background: rgba(3, 13, 26, 0.95);
  box-shadow: 0 0 0 4px rgba(51, 255, 153, 0.2);
}

/* Suggestion chips — dark */
:root[data-theme="dark"] .chatbot-suggestion {
  border-color: var(--theme-border);
  color: var(--theme-text-muted);
}

:root[data-theme="dark"] .chatbot-suggestion:hover {
  background: var(--theme-accent);
  color: var(--color-white);
  border-color: var(--theme-accent);
}

/* Typing indicator — dark */
:root[data-theme="dark"] .chatbot-typing {
  background: var(--theme-surface-alt);
}

:root[data-theme="dark"] .chatbot-typing-dot {
  background: var(--theme-text-muted);
}

/* Welcome — dark */
:root[data-theme="dark"] .chatbot-welcome-title {
  color: var(--theme-text);
}

:root[data-theme="dark"] .chatbot-welcome-text {
  color: var(--theme-text-muted);
}

/* Trigger — dark shadow enhancement */
:root[data-theme="dark"] .chatbot-trigger {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

:root[data-theme="dark"] .chatbot-trigger:hover {
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.4);
}

/* ==========================================================================
   Responsive — Mobile
   ========================================================================== */

@media (max-width: 768px) {
  .chatbot-panel {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    max-height: 100vh;
    border-radius: 0;
  }

  .chatbot-trigger {
    bottom: 16px;
    right: 16px;
  }
}

/* ==========================================================================
   Accessibility — Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .chatbot-panel,
  .chatbot-message,
  .chatbot-trigger {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .chatbot-typing-dot {
    animation-duration: 0.01ms !important;
  }
}