/* MNP Chat Widget - Professional Enterprise-Grade Styles */

/* ================== THEME VARIABLES ================== */
:root {
  /* Primary Colors */
  --mnp-primary: #6366f1;
  --mnp-primary-dark: #4f46e5;
  --mnp-secondary: #8b5cf6;
  --mnp-accent: #ec4899;
  
  /* Text Colors */
  --mnp-text-primary: #111827;
  --mnp-text-secondary: #6b7280;
  --mnp-text-tertiary: #9ca3af;
  --mnp-text-inverse: #ffffff;
  
  /* Background Colors */
  --mnp-bg-primary: #ffffff;
  --mnp-bg-secondary: #f9fafb;
  --mnp-bg-tertiary: #f3f4f6;
  --mnp-bg-hover: #f9fafb;
  --mnp-bg-active: #f3f4f6;
  
  /* Border Colors */
  --mnp-border-light: #e5e7eb;
  --mnp-border-medium: #d1d5db;
  --mnp-border-focus: var(--mnp-primary);
  
  /* Shadows - Elevation System */
  --mnp-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --mnp-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
  --mnp-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --mnp-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
  --mnp-shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
  --mnp-shadow-2xl: 0 24px 64px rgba(0, 0, 0, 0.14);
  --mnp-shadow-glow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  
  /* Border Radius */
  --mnp-radius-sm: 6px;
  --mnp-radius-md: 8px;
  --mnp-radius-lg: 12px;
  --mnp-radius-xl: 16px;
  --mnp-radius-2xl: 24px;
  --mnp-radius-full: 9999px;
  
  /* Spacing */
  --mnp-space-xs: 4px;
  --mnp-space-sm: 8px;
  --mnp-space-md: 12px;
  --mnp-space-lg: 16px;
  --mnp-space-xl: 20px;
  --mnp-space-2xl: 24px;
  --mnp-space-3xl: 32px;
  
  /* Typography */
  --mnp-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mnp-font-size-xs: 12px;
  --mnp-font-size-sm: 13px;
  --mnp-font-size-md: 14px;
  --mnp-font-size-lg: 16px;
  --mnp-font-size-xl: 18px;
  --mnp-line-height: 1.5;
  
  /* Animation */
  --mnp-transition-fast: 150ms;
  --mnp-transition-base: 200ms;
  --mnp-transition-slow: 300ms;
  --mnp-transition-slower: 500ms;
  --mnp-easing: cubic-bezier(0.4, 0, 0.2, 1);
  --mnp-easing-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Z-Index Layers */
  --mnp-z-base: 999990;
  --mnp-z-button: 999991;
  --mnp-z-window: 999992;
  --mnp-z-header: 999993;
  --mnp-z-overlay: 999994;
  --mnp-z-modal: 999995;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --mnp-primary: #818cf8;
  --mnp-primary-dark: #6366f1;
  --mnp-secondary: #a78bfa;
  --mnp-text-primary: #f9fafb;
  --mnp-text-secondary: #d1d5db;
  --mnp-text-tertiary: #9ca3af;
  --mnp-bg-primary: #1f2937;
  --mnp-bg-secondary: #111827;
  --mnp-bg-tertiary: #0f172a;
  --mnp-border-light: #374151;
  --mnp-border-medium: #4b5563;
  --mnp-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --mnp-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --mnp-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --mnp-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --mnp-shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
}

/* ================== GLOBAL STYLES ================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ================== CHAT BUTTON ================== */
.mnp-chat-button {
  position: fixed;
  bottom: var(--mnp-space-2xl);
  right: var(--mnp-space-2xl);
  width: 60px;
  height: 60px;
  border: none;
  border-radius: var(--mnp-radius-full);
  background: linear-gradient(135deg, var(--mnp-primary) 0%, var(--mnp-secondary) 100%);
  cursor: pointer;
  box-shadow: var(--mnp-shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--mnp-z-button);
  transition: all var(--mnp-transition-base) var(--mnp-easing);
  overflow: visible;
  position: relative;
}

.mnp-chat-button:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.3);
}

.mnp-chat-button:active {
  transform: scale(0.98);
}

.mnp-chat-button-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mnp-text-inverse);
}

.mnp-chat-icon {
  color: var(--mnp-text-inverse);
  transition: transform var(--mnp-transition-base) var(--mnp-easing);
}

.mnp-chat-button:hover .mnp-chat-icon {
  transform: rotate(5deg) scale(1.1);
}

/* Badge */
.mnp-chat-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  background: var(--mnp-accent);
  color: var(--mnp-text-inverse);
  font-size: var(--mnp-font-size-xs);
  font-weight: 600;
  border-radius: var(--mnp-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: badgeAppear var(--mnp-transition-slow) var(--mnp-easing-spring);
  box-shadow: var(--mnp-shadow-sm);
}

/* Pulse Animation */
.mnp-chat-button-pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  border-radius: var(--mnp-radius-full);
  background: linear-gradient(135deg, var(--mnp-primary) 0%, var(--mnp-secondary) 100%);
  opacity: 0.4;
  pointer-events: none;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.4;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.3);
    opacity: 0;
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0;
  }
}

@keyframes badgeAppear {
  from {
    transform: scale(0);
  }
  to {
    transform: scale(1);
  }
}

/* ================== CHAT WINDOW ================== */
.mnp-chat-window {
  position: fixed;
  bottom: var(--mnp-space-2xl);
  right: var(--mnp-space-2xl);
  width: 400px;
  height: 650px;
  max-height: calc(100vh - 48px);
  background: var(--mnp-bg-primary);
  border-radius: var(--mnp-radius-xl);
  box-shadow: var(--mnp-shadow-2xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: var(--mnp-z-window);
  animation: slideUp var(--mnp-transition-slow) var(--mnp-easing-spring);
  border: 1px solid rgba(0, 0, 0, 0.06);
  backdrop-filter: blur(10px);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ================== HEADER ================== */
.mnp-chat-header {
  background: linear-gradient(135deg, var(--mnp-primary) 0%, var(--mnp-secondary) 100%);
  color: var(--mnp-text-inverse);
  padding: var(--mnp-space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  z-index: var(--mnp-z-header);
  min-height: 72px;
}

/* Subtle noise texture overlay */
.mnp-chat-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.03;
  background-image: 
    repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255,255,255,.1) 35px, rgba(255,255,255,.1) 70px);
  pointer-events: none;
}

.mnp-chat-header-left {
  display: flex;
  align-items: center;
  gap: var(--mnp-space-md);
}

.mnp-chat-avatar {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: var(--mnp-radius-full);
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 2px solid rgba(255, 255, 255, 0.3);
  font-size: var(--mnp-font-size-md);
  font-weight: 600;
  color: var(--mnp-text-inverse);
}

.mnp-chat-avatar img {
  width: 100%;
  height: 100%;
  border-radius: var(--mnp-radius-full);
  object-fit: cover;
}

.mnp-chat-avatar-initials {
  user-select: none;
}

.mnp-chat-status-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  background: #10b981;
  border: 2px solid var(--mnp-bg-primary);
  border-radius: var(--mnp-radius-full);
  animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
}

.mnp-chat-header-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mnp-chat-header-info h3 {
  margin: 0;
  font-size: var(--mnp-font-size-lg);
  font-weight: 600;
  font-family: var(--mnp-font-family);
  letter-spacing: -0.01em;
}

.mnp-chat-status {
  font-size: var(--mnp-font-size-sm);
  opacity: 0.9;
  font-family: var(--mnp-font-family);
  display: flex;
  align-items: center;
  gap: var(--mnp-space-xs);
}

.mnp-chat-status-dot-inline {
  width: 6px;
  height: 6px;
  background: #10b981;
  border-radius: var(--mnp-radius-full);
  display: inline-block;
  animation: statusPulse 2s ease-in-out infinite;
}

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

.mnp-chat-close {
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--mnp-text-inverse);
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--mnp-radius-md);
  transition: all var(--mnp-transition-fast) var(--mnp-easing);
}

.mnp-chat-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

.mnp-chat-close:active {
  transform: scale(0.95);
}

/* ================== MESSAGES AREA ================== */
.mnp-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--mnp-space-xl);
  background: var(--mnp-bg-secondary);
  display: flex;
  flex-direction: column;
  gap: var(--mnp-space-lg);
  position: relative;
}

/* Custom Scrollbar */
.mnp-chat-messages::-webkit-scrollbar {
  width: 6px;
}

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

.mnp-chat-messages::-webkit-scrollbar-thumb {
  background: var(--mnp-border-medium);
  border-radius: var(--mnp-radius-full);
  transition: background var(--mnp-transition-fast) var(--mnp-easing);
}

.mnp-chat-messages::-webkit-scrollbar-thumb:hover {
  background: var(--mnp-border-light);
}

/* Date Divider */
.mnp-chat-date-divider {
  text-align: center;
  margin: var(--mnp-space-md) 0;
  position: relative;
}

.mnp-chat-date-divider span {
  background: var(--mnp-bg-secondary);
  color: var(--mnp-text-tertiary);
  font-size: var(--mnp-font-size-xs);
  padding: 0 var(--mnp-space-md);
  position: relative;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.mnp-chat-date-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--mnp-border-light);
  transform: translateY(-50%);
}

/* Messages */
.mnp-chat-message {
  display: flex;
  gap: var(--mnp-space-sm);
  animation: messageAppear var(--mnp-transition-base) var(--mnp-easing);
}

@keyframes messageAppear {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.mnp-chat-message-user {
  justify-content: flex-end;
}

.mnp-chat-message-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--mnp-radius-full);
  background: var(--mnp-bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.mnp-chat-message-avatar img {
  width: 100%;
  height: 100%;
  border-radius: var(--mnp-radius-full);
  object-fit: cover;
}

.mnp-chat-avatar-small {
  font-size: var(--mnp-font-size-xs);
  font-weight: 600;
  color: var(--mnp-text-secondary);
  user-select: none;
}

.mnp-chat-message-content {
  max-width: 85%;
  display: flex;
  flex-direction: column;
  gap: var(--mnp-space-xs);
}

.mnp-chat-message-bubble {
  padding: var(--mnp-space-md) var(--mnp-space-lg);
  border-radius: var(--mnp-radius-xl);
  font-size: var(--mnp-font-size-md);
  line-height: var(--mnp-line-height);
  font-family: var(--mnp-font-family);
  position: relative;
  word-wrap: break-word;
}

/* Bot message bubble */
.mnp-chat-message-bot .mnp-chat-message-bubble {
  background: var(--mnp-bg-primary);
  color: var(--mnp-text-primary);
  border-bottom-left-radius: var(--mnp-radius-sm);
  box-shadow: var(--mnp-shadow-sm);
  border: 1px solid var(--mnp-border-light);
}

/* User message bubble */
.mnp-chat-message-user .mnp-chat-message-bubble {
  background: linear-gradient(135deg, var(--mnp-primary) 0%, var(--mnp-secondary) 100%);
  color: var(--mnp-text-inverse);
  border-bottom-right-radius: var(--mnp-radius-sm);
  box-shadow: var(--mnp-shadow-md);
}

/* Message time */
.mnp-chat-message-time {
  font-size: var(--mnp-font-size-xs);
  color: var(--mnp-text-tertiary);
  padding: 0 var(--mnp-space-xs);
}

.mnp-chat-message-user .mnp-chat-message-time {
  text-align: right;
}

/* Markdown styles */
.mnp-chat-message-bubble strong {
  font-weight: 600;
}

.mnp-chat-message-bubble em {
  font-style: italic;
}

.mnp-chat-message-bubble code {
  background: rgba(0, 0, 0, 0.05);
  padding: 2px 6px;
  border-radius: var(--mnp-radius-sm);
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  font-size: 0.9em;
}

.mnp-chat-message-user .mnp-chat-message-bubble code {
  background: rgba(255, 255, 255, 0.2);
}

.mnp-chat-message-bubble a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.mnp-chat-message-bubble a:hover {
  opacity: 0.8;
}

/* Typing Indicator */
.mnp-chat-typing {
  display: flex;
  align-items: center;
  gap: var(--mnp-space-xs);
  padding: var(--mnp-space-lg);
  min-width: 60px;
}

.mnp-typing-dot {
  width: 8px;
  height: 8px;
  background: var(--mnp-text-tertiary);
  border-radius: var(--mnp-radius-full);
  animation: typingDot 1.4s ease-in-out infinite;
}

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

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

@keyframes typingDot {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  30% {
    transform: translateY(-10px);
    opacity: 1;
  }
}

/* ================== INPUT AREA ================== */
.mnp-chat-input-container {
  padding: var(--mnp-space-lg);
  background: var(--mnp-bg-primary);
  border-top: 1px solid var(--mnp-border-light);
  display: flex;
  gap: var(--mnp-space-md);
  align-items: flex-end;
  flex-shrink: 0;
}

.mnp-chat-input-wrapper {
  flex: 1;
  position: relative;
}

.mnp-chat-input {
  width: 100%;
  border: 1px solid var(--mnp-border-light);
  border-radius: var(--mnp-radius-2xl);
  padding: var(--mnp-space-md) var(--mnp-space-lg);
  padding-right: 40px;
  font-size: var(--mnp-font-size-md);
  font-family: var(--mnp-font-family);
  resize: none;
  outline: none;
  transition: all var(--mnp-transition-fast) var(--mnp-easing);
  background: var(--mnp-bg-primary);
  color: var(--mnp-text-primary);
  line-height: 1.5;
  min-height: 44px;
}

.mnp-chat-input:focus {
  border-color: var(--mnp-primary);
  box-shadow: var(--mnp-shadow-glow);
}

.mnp-chat-input:disabled {
  background: var(--mnp-bg-tertiary);
  cursor: not-allowed;
  opacity: 0.6;
}

.mnp-chat-input::placeholder {
  color: var(--mnp-text-tertiary);
}

/* Character Count */
.mnp-chat-char-count {
  position: absolute;
  right: var(--mnp-space-lg);
  bottom: var(--mnp-space-md);
  font-size: var(--mnp-font-size-xs);
  color: var(--mnp-text-tertiary);
  pointer-events: none;
}

/* Input Actions */
.mnp-chat-input-actions {
  display: flex;
  gap: var(--mnp-space-sm);
  align-items: center;
}

.mnp-chat-attach {
  width: 36px;
  height: 36px;
  border-radius: var(--mnp-radius-full);
  border: 1px solid var(--mnp-border-light);
  background: var(--mnp-bg-primary);
  color: var(--mnp-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--mnp-transition-fast) var(--mnp-easing);
  flex-shrink: 0;
}

.mnp-chat-attach:hover:not(:disabled) {
  background: var(--mnp-bg-hover);
  border-color: var(--mnp-border-medium);
  transform: scale(1.05);
}

.mnp-chat-attach:active:not(:disabled) {
  transform: scale(0.95);
}

.mnp-chat-attach:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.mnp-chat-send {
  width: 40px;
  height: 40px;
  border-radius: var(--mnp-radius-full);
  background: linear-gradient(135deg, var(--mnp-primary) 0%, var(--mnp-secondary) 100%);
  border: none;
  color: var(--mnp-text-inverse);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--mnp-transition-fast) var(--mnp-easing);
  flex-shrink: 0;
  box-shadow: var(--mnp-shadow-md);
}

.mnp-chat-send:hover:not(:disabled) {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.mnp-chat-send:active:not(:disabled) {
  transform: scale(0.95);
}

.mnp-chat-send:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: var(--mnp-border-light);
}

/* ================== MOBILE RESPONSIVE ================== */
@media (max-width: 480px) {
  .mnp-chat-button {
    bottom: var(--mnp-space-lg);
    right: var(--mnp-space-lg);
    width: 56px;
    height: 56px;
  }
  
  .mnp-chat-window {
    width: 100vw;
    height: 100vh;
    max-height: 100vh;
    bottom: 0;
    right: 0;
    left: 0;
    border-radius: 0;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
  }
  
  .mnp-chat-header {
    border-radius: 0;
    padding-top: calc(var(--mnp-space-xl) + env(safe-area-inset-top));
  }
  
  .mnp-chat-input-container {
    padding-bottom: calc(var(--mnp-space-lg) + env(safe-area-inset-bottom));
  }
}

/* ================== ACCESSIBILITY ================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible for keyboard navigation */
.mnp-chat-button:focus-visible,
.mnp-chat-close:focus-visible,
.mnp-chat-send:focus-visible,
.mnp-chat-attach:focus-visible {
  outline: 2px solid var(--mnp-primary);
  outline-offset: 2px;
}

/* ================== RTL SUPPORT ================== */
[dir="rtl"] .mnp-chat-button {
  right: auto;
  left: var(--mnp-space-2xl);
}

[dir="rtl"] .mnp-chat-window {
  right: auto;
  left: var(--mnp-space-2xl);
}

[dir="rtl"] .mnp-chat-message-user {
  justify-content: flex-start;
}

[dir="rtl"] .mnp-chat-message-bot {
  justify-content: flex-end;
}

[dir="rtl"] .mnp-chat-message-user .mnp-chat-message-bubble {
  border-bottom-right-radius: var(--mnp-radius-xl);
  border-bottom-left-radius: var(--mnp-radius-xs);
}

[dir="rtl"] .mnp-chat-message-bot .mnp-chat-message-bubble {
  border-bottom-left-radius: var(--mnp-radius-xl);
  border-bottom-right-radius: var(--mnp-radius-xs);
}