/* ============================================
   Cloudfresh Chat Widget — Premium Design System
   ============================================ */

/* === CSS Custom Properties === */
:root {
  /* Brand Colors */
  --cf-primary: #4F46E5;
  --cf-primary-hover: #4338CA;
  --cf-primary-light: #E0E7FF;
  --cf-primary-glow: rgba(79, 70, 229, 0.25);

  /* Accent / Gradient */
  --cf-gradient-start: #6366F1;
  --cf-gradient-mid: #8B5CF6;
  --cf-gradient-end: #A78BFA;
  --cf-gradient: linear-gradient(135deg, var(--cf-gradient-start), var(--cf-gradient-mid), var(--cf-gradient-end));

  /* Neutral */
  --cf-bg: #0F172A;
  --cf-bg-secondary: #1E293B;
  --cf-bg-card: #1E293B;
  --cf-bg-elevated: #2D3A52;
  --cf-surface: rgba(30, 41, 59, 0.85);
  --cf-border: rgba(148, 163, 184, 0.12);
  --cf-border-hover: rgba(148, 163, 184, 0.25);

  /* Text */
  --cf-text: #F1F5F9;
  --cf-text-secondary: #94A3B8;
  --cf-text-muted: #64748B;

  /* Status */
  --cf-online: #34D399;
  --cf-online-glow: rgba(52, 211, 153, 0.4);

  /* Message Bubbles */
  --cf-msg-visitor-bg: var(--cf-primary);
  --cf-msg-visitor-text: #FFFFFF;
  --cf-msg-operator-bg: var(--cf-bg-elevated);
  --cf-msg-operator-text: var(--cf-text);

  /* Sizing */
  --cf-widget-width: 400px;
  --cf-widget-height: 620px;
  --cf-toggle-size: 60px;
  --cf-border-radius: 16px;
  --cf-border-radius-sm: 10px;
  --cf-border-radius-xs: 6px;

  /* Shadows */
  --cf-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --cf-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.25);
  --cf-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.35);
  --cf-shadow-glow: 0 0 40px var(--cf-primary-glow);

  /* Transitions */
  --cf-transition-fast: 0.15s ease;
  --cf-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --cf-transition-spring: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* Font */
  --cf-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}


/* === Reset & Base === */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--cf-font);
  background: var(--cf-bg);
  color: var(--cf-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}


/* ============================================
   Demo Page (for testing only)
   ============================================ */
.demo-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(167, 139, 250, 0.04) 0%, transparent 50%),
    var(--cf-bg);
}

.demo-content {
  text-align: center;
  max-width: 720px;
}

.demo-content h1 {
  font-size: 3rem;
  font-weight: 700;
  background: var(--cf-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.25rem;
}

.demo-content > p {
  font-size: 1.15rem;
  color: var(--cf-text-secondary);
  margin-top: 0;
}

.demo-subtitle {
  color: var(--cf-text-muted) !important;
  font-size: 0.95rem !important;
  margin-top: 0.5rem !important;
}

.demo-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.25rem;
  margin: 2.5rem 0;
}

.demo-card {
  background: var(--cf-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--cf-border);
  border-radius: var(--cf-border-radius);
  padding: 1.75rem 1.25rem;
  transition: var(--cf-transition);
}

.demo-card:hover {
  border-color: var(--cf-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--cf-shadow-md);
}

.demo-card-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.demo-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--cf-text);
}

.demo-card p {
  font-size: 0.8rem;
  color: var(--cf-text-secondary);
  margin: 0;
  line-height: 1.5;
}

.demo-hint {
  margin-top: 2rem;
  padding: 1rem 1.5rem;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--cf-border-radius-sm);
  color: var(--cf-text-secondary);
  font-size: 0.9rem;
  animation: gentle-pulse 3s ease-in-out infinite;
}

@keyframes gentle-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}


/* ============================================
   Chat Widget Container
   ============================================ */
.chat-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 99999;
  font-family: var(--cf-font);
}


/* ============================================
   Toggle Button
   ============================================ */
.chat-toggle {
  width: var(--cf-toggle-size);
  height: var(--cf-toggle-size);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: var(--cf-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--cf-shadow-md), var(--cf-shadow-glow);
  transition: var(--cf-transition-spring);
  position: relative;
  overflow: hidden;
}

.chat-toggle::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--cf-gradient);
  opacity: 0;
  transition: var(--cf-transition);
}

.chat-toggle:hover {
  transform: scale(1.08);
  box-shadow: var(--cf-shadow-lg), 0 0 60px var(--cf-primary-glow);
}

.chat-toggle:hover::before {
  opacity: 0.15;
}

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

.chat-toggle__icon {
  width: 26px;
  height: 26px;
  transition: var(--cf-transition-spring);
  position: absolute;
}

.chat-toggle__icon--chat {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.chat-toggle__icon--close {
  opacity: 0;
  transform: scale(0.5) rotate(-90deg);
}

.chat-widget.is-open .chat-toggle__icon--chat {
  opacity: 0;
  transform: scale(0.5) rotate(90deg);
}

.chat-widget.is-open .chat-toggle__icon--close {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

/* Unread Badge */
.chat-toggle__badge {
  position: absolute;
  top: -2px;
  right: -2px;
  background: #EF4444;
  color: white;
  font-size: 11px;
  font-weight: 700;
  min-width: 20px;
  height: 20px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
  border: 2px solid var(--cf-bg);
  animation: badge-pop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes badge-pop {
  0% { transform: scale(0); }
  100% { transform: scale(1); }
}


/* ============================================
   Chat Window
   ============================================ */
.chat-window {
  position: absolute;
  bottom: calc(var(--cf-toggle-size) + 16px);
  right: 0;
  width: var(--cf-widget-width);
  height: var(--cf-widget-height);
  background: var(--cf-bg-secondary);
  border-radius: var(--cf-border-radius);
  border: 1px solid var(--cf-border);
  box-shadow: var(--cf-shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;

  /* Animation */
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.96);
  transform-origin: bottom right;
  transition: 
    opacity var(--cf-transition),
    visibility var(--cf-transition),
    transform var(--cf-transition-spring);
}

.chat-widget.is-open .chat-window {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}


/* ============================================
   Chat Header
   ============================================ */
.chat-header {
  padding: 16px 20px;
  background: var(--cf-gradient);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.chat-header::after {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1) 0%, transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(255,255,255,0.05) 0%, transparent 40%);
  pointer-events: none;
}

.chat-header__left {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.chat-header__avatar {
  position: relative;
}

.chat-header__avatar-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  color: white;
  letter-spacing: 0.5px;
}

.chat-header__status {
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cf-online);
  border: 2px solid var(--cf-gradient-start);
  box-shadow: 0 0 8px var(--cf-online-glow);
}

.chat-header__title {
  font-size: 15px;
  font-weight: 600;
  color: white;
  margin: 0;
}

.chat-header__subtitle {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.75);
  margin: 2px 0 0;
}

.chat-header__actions {
  position: relative;
  z-index: 1;
}

.chat-header__btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--cf-transition-fast);
}

.chat-header__btn:hover {
  background: rgba(255, 255, 255, 0.25);
}

.chat-header__btn svg {
  width: 18px;
  height: 18px;
}


/* ============================================
   Chat Body (Messages)
   ============================================ */
.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  scroll-behavior: smooth;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.03) 0%, transparent 70%),
    var(--cf-bg-secondary);
}

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

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

.chat-body::-webkit-scrollbar-thumb {
  background: var(--cf-border);
  border-radius: 3px;
}

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


/* ============================================
   Welcome Screen
   ============================================ */
.welcome-screen {
  display: flex;
  flex-direction: column;
  gap: 20px;
  animation: fadeInUp 0.5s ease;
}

.welcome-screen__content {
  text-align: center;
  padding: 20px 10px 0;
}

.welcome-screen__emoji {
  font-size: 3rem;
  margin-bottom: 8px;
  animation: wave 2s ease-in-out infinite;
  display: inline-block;
}

@keyframes wave {
  0%, 100% { transform: rotate(0deg); }
  15% { transform: rotate(14deg); }
  30% { transform: rotate(-8deg); }
  40% { transform: rotate(14deg); }
  50% { transform: rotate(-4deg); }
  60% { transform: rotate(10deg); }
  70% { transform: rotate(0deg); }
}

.welcome-screen__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 8px;
  background: var(--cf-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.welcome-screen__text {
  font-size: 0.9rem;
  color: var(--cf-text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* Quick Replies */
.quick-replies {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 4px;
}

.quick-reply {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--cf-bg-elevated);
  border: 1px solid var(--cf-border);
  border-radius: var(--cf-border-radius-sm);
  color: var(--cf-text);
  cursor: pointer;
  font-family: var(--cf-font);
  font-size: 14px;
  transition: var(--cf-transition);
  text-align: left;
  animation: fadeInUp 0.4s ease backwards;
}

.quick-reply:nth-child(1) { animation-delay: 0.05s; }
.quick-reply:nth-child(2) { animation-delay: 0.1s; }
.quick-reply:nth-child(3) { animation-delay: 0.15s; }
.quick-reply:nth-child(4) { animation-delay: 0.2s; }
.quick-reply:nth-child(5) { animation-delay: 0.25s; }
.quick-reply:nth-child(6) { animation-delay: 0.3s; }

.quick-reply:hover {
  background: rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateX(4px);
}

.quick-reply:active {
  transform: translateX(2px) scale(0.98);
}

.quick-reply__icon {
  font-size: 1.25rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 8px;
  flex-shrink: 0;
}

.quick-reply__text {
  font-weight: 500;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}


/* ============================================
   Messages
   ============================================ */
.messages-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.message {
  display: flex;
  gap: 8px;
  max-width: 85%;
  animation: messageIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.message--visitor {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message--operator {
  align-self: flex-start;
}

.message__avatar {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.message--operator .message__avatar {
  background: var(--cf-gradient);
  color: white;
}

.message--visitor .message__avatar {
  display: none;
}

.message__content {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.message__bubble {
  padding: 10px 16px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.5;
  word-break: break-word;
  position: relative;
}

.message--visitor .message__bubble {
  background: var(--cf-msg-visitor-bg);
  color: var(--cf-msg-visitor-text);
  border-bottom-right-radius: 4px;
}

.message--operator .message__bubble {
  background: var(--cf-msg-operator-bg);
  color: var(--cf-msg-operator-text);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--cf-border);
}

.message__time {
  font-size: 11px;
  color: var(--cf-text-muted);
  padding: 0 4px;
}

.message--visitor .message__time {
  text-align: right;
}

@keyframes messageIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Date separator */
.date-separator {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 12px 0;
}

.date-separator::before,
.date-separator::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--cf-border);
}

.date-separator__text {
  font-size: 11px;
  color: var(--cf-text-muted);
  font-weight: 500;
  white-space: nowrap;
}


/* ============================================
   Typing Indicator
   ============================================ */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  animation: fadeInUp 0.3s ease;
}

.typing-indicator__avatar {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--cf-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
}

.typing-indicator__dots {
  display: flex;
  gap: 4px;
  padding: 10px 16px;
  background: var(--cf-bg-elevated);
  border-radius: 16px;
  border-bottom-left-radius: 4px;
  border: 1px solid var(--cf-border);
}

.typing-indicator__dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cf-text-muted);
  animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-indicator__dots span:nth-child(1) { animation-delay: 0s; }
.typing-indicator__dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator__dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  30% {
    transform: translateY(-6px);
    opacity: 1;
  }
}


/* ============================================
   Chat Footer / Input
   ============================================ */
.chat-footer {
  padding: 12px 16px 10px;
  background: var(--cf-bg-secondary);
  border-top: 1px solid var(--cf-border);
  flex-shrink: 0;
}

.chat-input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 6px 6px 6px 16px;
  background: var(--cf-bg-elevated);
  border: 1px solid var(--cf-border);
  border-radius: 24px;
  transition: var(--cf-transition);
}

.chat-input-wrapper:focus-within {
  border-color: var(--cf-primary);
  box-shadow: 0 0 0 3px var(--cf-primary-glow);
}

.chat-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--cf-text);
  font-family: var(--cf-font);
  font-size: 14px;
  padding: 8px 0;
  resize: none;
  min-height: 20px;
  max-height: 100px;
  outline: none;
  line-height: 1.5;
}

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

.chat-send {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--cf-gradient);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--cf-transition);
  opacity: 0.5;
  transform: scale(0.9);
}

.chat-send:not(:disabled) {
  opacity: 1;
  transform: scale(1);
}

.chat-send:not(:disabled):hover {
  box-shadow: 0 0 16px var(--cf-primary-glow);
  transform: scale(1.05);
}

.chat-send:not(:disabled):active {
  transform: scale(0.92);
}

.chat-send svg {
  width: 16px;
  height: 16px;
}

.chat-footer__powered {
  text-align: center;
  font-size: 11px;
  color: var(--cf-text-muted);
  margin-top: 8px;
  opacity: 0.6;
}

.chat-footer__powered strong {
  color: var(--cf-text-secondary);
  font-weight: 600;
}


/* ============================================
   System messages
   ============================================ */
.system-message {
  text-align: center;
  padding: 8px 16px;
  margin: 8px 0;
}

.system-message__text {
  font-size: 12px;
  color: var(--cf-text-muted);
  background: rgba(99, 102, 241, 0.06);
  padding: 6px 14px;
  border-radius: 20px;
  display: inline-block;
}


/* ============================================
   Responsive
   ============================================ */
@media (max-width: 480px) {
  .chat-widget {
    bottom: 12px;
    right: 12px;
  }

  .chat-window {
    width: calc(100vw - 24px);
    height: calc(100vh - 100px);
    bottom: calc(var(--cf-toggle-size) + 12px);
    right: 0;
    border-radius: var(--cf-border-radius-sm);
  }

  .chat-toggle {
    width: 52px;
    height: 52px;
  }
}

@media (max-width: 360px) {
  .chat-window {
    width: 100vw;
    height: calc(100vh - 80px);
    right: -12px;
    bottom: calc(52px + 12px);
    border-radius: var(--cf-border-radius-sm) var(--cf-border-radius-sm) 0 0;
  }
}