/**
 * LoanwaleBaba AI Chatbot - Public Styles
 * Fintech-grade premium design
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
  --lwab-primary: #1a56db;
  --lwab-primary-dark: #0f3f9e;
  --lwab-primary-light: #e8f0fd;
  --lwab-accent: #0ea5e9;
  --lwab-success: #10b981;
  --lwab-error: #ef4444;
  --lwab-warning: #f59e0b;
  --lwab-white: #ffffff;
  --lwab-gray-50: #f9fafb;
  --lwab-gray-100: #f3f4f6;
  --lwab-gray-200: #e5e7eb;
  --lwab-gray-300: #d1d5db;
  --lwab-gray-400: #9ca3af;
  --lwab-gray-500: #6b7280;
  --lwab-gray-600: #4b5563;
  --lwab-gray-700: #374151;
  --lwab-gray-800: #1f2937;
  --lwab-gray-900: #111827;
  --lwab-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --lwab-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --lwab-shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.18);
  --lwab-shadow-xl: 0 24px 60px rgba(26, 86, 219, 0.2);
  --lwab-radius-sm: 8px;
  --lwab-radius-md: 12px;
  --lwab-radius-lg: 16px;
  --lwab-radius-xl: 24px;
  --lwab-radius-full: 9999px;
  --lwab-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Roboto, sans-serif;
  --lwab-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --lwab-z-index: 999999;
  --lwab-widget-width: 380px;
  --lwab-widget-height: 600px;
}

/* ============================================
   RESET & BASE
   ============================================ */
#lwab-chatbot-wrapper,
#lwab-chatbot-wrapper * {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: var(--lwab-font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   WRAPPER
   ============================================ */
.lwab-chatbot-wrapper {
  position: fixed;
  z-index: var(--lwab-z-index);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 16px;
}

.lwab-position-bottom-right {
  bottom: 24px;
  right: 24px;
}

.lwab-position-bottom-left {
  bottom: 24px;
  left: 24px;
  align-items: flex-start;
}

/* ============================================
   TOGGLE BUTTON
   ============================================ */
.lwab-toggle-btn {
  position: relative;
  width: 60px;
  height: 60px;
  border-radius: var(--lwab-radius-full);
  background: linear-gradient(135deg, var(--lwab-primary) 0%, var(--lwab-primary-dark) 100%);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--lwab-shadow-xl);
  transition: transform var(--lwab-transition), box-shadow var(--lwab-transition);
  outline: none;
  color: var(--lwab-white);
  flex-shrink: 0;
  order: 2;
}

.lwab-toggle-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 28px 70px rgba(26, 86, 219, 0.35);
}

.lwab-toggle-btn:active {
  transform: scale(0.96);
}

.lwab-toggle-btn:focus-visible {
  outline: 3px solid var(--lwab-primary);
  outline-offset: 3px;
}

.lwab-toggle-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--lwab-transition), transform var(--lwab-transition);
}

.lwab-toggle-icon svg {
  width: 26px;
  height: 26px;
}

.lwab-notification-dot {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 12px;
  height: 12px;
  background: var(--lwab-error);
  border-radius: var(--lwab-radius-full);
  border: 2px solid var(--lwab-white);
  animation: lwab-pulse 2s infinite;
}

@keyframes lwab-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.8; }
}

/* ============================================
   CHAT WINDOW
   ============================================ */
.lwab-chat-window {
  width: var(--lwab-widget-width);
  height: var(--lwab-widget-height);
  background: var(--lwab-white);
  border-radius: var(--lwab-radius-xl);
  box-shadow: var(--lwab-shadow-lg), 0 0 0 1px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px) scale(0.96);
  transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  order: 1;
}

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

.lwab-chat-window.lwab-minimized {
  height: auto;
}

.lwab-chat-window.lwab-minimized .lwab-messages,
.lwab-chat-window.lwab-minimized .lwab-suggestions,
.lwab-chat-window.lwab-minimized .lwab-input-area {
  display: none;
}

/* ============================================
   HEADER
   ============================================ */
.lwab-chat-header {
  background: linear-gradient(135deg, var(--lwab-primary) 0%, var(--lwab-primary-dark) 100%);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.lwab-chat-header::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 120px;
  height: 120px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
}

.lwab-chat-header::after {
  content: '';
  position: absolute;
  bottom: -40%;
  right: 20%;
  width: 80px;
  height: 80px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
}

.lwab-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.lwab-bot-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--lwab-radius-full);
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.lwab-bot-avatar svg {
  width: 22px;
  height: 22px;
  color: var(--lwab-white);
}

.lwab-bot-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lwab-header-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.lwab-chat-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--lwab-white);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.lwab-online-status {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.8);
}

.lwab-status-dot {
  width: 7px;
  height: 7px;
  background: #4ade80;
  border-radius: var(--lwab-radius-full);
  animation: lwab-pulse 2s infinite;
  flex-shrink: 0;
}

.lwab-header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
  z-index: 1;
}

.lwab-header-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--lwab-radius-sm);
  background: rgba(255, 255, 255, 0.15);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--lwab-white);
  transition: background var(--lwab-transition), transform var(--lwab-transition);
  outline: none;
}

.lwab-header-btn:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lwab-header-btn:active {
  transform: scale(0.92);
}

.lwab-header-btn:focus-visible {
  outline: 2px solid white;
  outline-offset: 2px;
}

.lwab-header-btn svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   MESSAGES AREA
   ============================================ */
.lwab-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  scroll-behavior: smooth;
}

.lwab-messages::-webkit-scrollbar {
  width: 4px;
}

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

.lwab-messages::-webkit-scrollbar-thumb {
  background: var(--lwab-gray-200);
  border-radius: var(--lwab-radius-full);
}

/* Message bubbles */
.lwab-message {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  animation: lwab-fadeInUp 0.25s ease;
  max-width: 100%;
}

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

.lwab-message-bot {
  flex-direction: row;
}

.lwab-message-user {
  flex-direction: row-reverse;
}

.lwab-message-avatar {
  width: 34px;
  height: 34px;
  border-radius: var(--lwab-radius-full);
  background: var(--lwab-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.lwab-message-avatar svg {
  width: 18px;
  height: 18px;
  color: var(--lwab-primary);
}

.lwab-message-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lwab-message-content {
  display: flex;
  flex-direction: column;
  gap: 5px;
  max-width: calc(100% - 44px);
}

.lwab-message-bubble {
  padding: 12px 16px;
  border-radius: var(--lwab-radius-md);
  font-size: 14.5px;
  line-height: 1.65;
  word-break: break-word;
  white-space: pre-wrap;
}

.lwab-message-bot .lwab-message-bubble {
  background: #f0f4ff;
  color: var(--lwab-gray-800);
  border-bottom-left-radius: 4px;
}

.lwab-message-user .lwab-message-bubble {
  background: var(--lwab-primary);
  color: var(--lwab-white);
  border-bottom-right-radius: 4px;
  align-self: flex-end;
}

.lwab-message-time {
  font-size: 11.5px;
  color: var(--lwab-gray-400);
  padding: 0 4px;
}

.lwab-message-bot .lwab-message-time {
  align-self: flex-start;
}

.lwab-message-user .lwab-message-time {
  align-self: flex-end;
}

/* Typing indicator */
.lwab-typing-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 4px;
}

.lwab-typing-dots {
  display: flex;
  gap: 4px;
  padding: 12px 16px;
  background: var(--lwab-gray-100);
  border-radius: var(--lwab-radius-md);
  border-bottom-left-radius: 4px;
}

.lwab-typing-dots span {
  width: 8px;
  height: 8px;
  background: var(--lwab-gray-400);
  border-radius: var(--lwab-radius-full);
  animation: lwab-typing-bounce 1.4s infinite;
}

.lwab-typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.lwab-typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes lwab-typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-6px); opacity: 1; }
}

/* Error message */
.lwab-message-error .lwab-message-bubble {
  background: #fef2f2;
  color: var(--lwab-error);
  border: 1px solid #fecaca;
}

/* ============================================
   SUGGESTIONS
   ============================================ */
.lwab-suggestions {
  padding: 10px 16px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  flex-wrap: nowrap;
  border-top: 1px solid var(--lwab-gray-100);
  flex-shrink: 0;
}

.lwab-suggestions::-webkit-scrollbar {
  height: 0;
}

.lwab-suggestion-btn {
  background: var(--lwab-primary-light);
  color: var(--lwab-primary);
  border: 1px solid rgba(26, 86, 219, 0.2);
  border-radius: var(--lwab-radius-full);
  padding: 8px 16px;
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--lwab-transition), color var(--lwab-transition), transform var(--lwab-transition);
  outline: none;
  flex-shrink: 0;
}

.lwab-suggestion-btn:hover {
  background: var(--lwab-primary);
  color: var(--lwab-white);
  transform: translateY(-1px);
}

.lwab-suggestion-btn:active {
  transform: translateY(0);
}

.lwab-suggestion-btn:focus-visible {
  outline: 2px solid var(--lwab-primary);
  outline-offset: 2px;
}

/* ============================================
   INPUT AREA
   ============================================ */
.lwab-input-area {
  border-top: 1px solid var(--lwab-gray-100);
  padding: 12px 16px;
  flex-shrink: 0;
  background: var(--lwab-white);
}

.lwab-input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  background: var(--lwab-gray-50);
  border: 1.5px solid var(--lwab-gray-200);
  border-radius: var(--lwab-radius-lg);
  padding: 10px 10px 10px 14px;
  transition: border-color var(--lwab-transition), box-shadow var(--lwab-transition);
}

.lwab-input-wrapper:focus-within {
  border-color: var(--lwab-primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
  background: var(--lwab-white);
}

.lwab-user-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--lwab-gray-800);
  resize: none;
  outline: none;
  max-height: 120px;
  overflow-y: auto;
  font-family: var(--lwab-font);
}

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

.lwab-user-input::-webkit-scrollbar {
  width: 4px;
}

.lwab-send-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--lwab-radius-sm);
  background: var(--lwab-primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--lwab-white);
  flex-shrink: 0;
  transition: background var(--lwab-transition), transform var(--lwab-transition);
  outline: none;
}

.lwab-send-btn:hover:not(:disabled) {
  background: var(--lwab-primary-dark);
  transform: scale(1.05);
}

.lwab-send-btn:active {
  transform: scale(0.95);
}

.lwab-send-btn:disabled {
  background: var(--lwab-gray-300);
  cursor: not-allowed;
  transform: none;
}

.lwab-send-btn:focus-visible {
  outline: 2px solid var(--lwab-primary);
  outline-offset: 2px;
}

.lwab-send-btn svg {
  width: 18px;
  height: 18px;
}

.lwab-powered-by {
  text-align: center;
  font-size: 11.5px;
  color: var(--lwab-gray-400);
  margin-top: 8px;
  letter-spacing: 0.01em;
}

/* ============================================
   DYNAMIC COLOR INJECTION
   ============================================ */
.lwab-dynamic-primary .lwab-chat-header,
.lwab-dynamic-primary .lwab-toggle-btn,
.lwab-dynamic-primary .lwab-message-user .lwab-message-bubble,
.lwab-dynamic-primary .lwab-send-btn {
  /* Colors injected via JS */
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 480px) {
  :root {
    --lwab-widget-width: calc(100vw - 32px);
    --lwab-widget-height: calc(100vh - 120px);
  }

  .lwab-position-bottom-right,
  .lwab-position-bottom-left {
    bottom: 16px;
    right: 16px;
    left: auto;
  }

  .lwab-position-bottom-left {
    left: 16px;
    right: auto;
  }

  .lwab-chat-window {
    border-radius: var(--lwab-radius-lg);
  }
}

@media (max-width: 360px) {
  :root {
    --lwab-widget-width: calc(100vw - 24px);
  }

  .lwab-position-bottom-right {
    right: 12px;
    bottom: 12px;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  .lwab-chat-window,
  .lwab-toggle-btn,
  .lwab-message,
  .lwab-typing-dots span,
  .lwab-notification-dot,
  .lwab-status-dot {
    animation: none;
    transition: none;
  }
}