/* ==========================================================================
   Merciful AI Embeddable Chat Widget Styles
   Customizable via CSS Custom Properties
   ========================================================================== */

:root {
  --merc-primary: #6366f1;
  --merc-primary-hover: #4f46e5;
  --merc-primary-text: #ffffff;
  --merc-bg: #0f172a;
  --merc-surface: #1e293b;
  --merc-surface-hover: #334155;
  --merc-text: #f8fafc;
  --merc-text-muted: #94a3b8;
  --merc-border: rgba(255, 255, 255, 0.1);
  --merc-user-bubble: #6366f1;
  --merc-user-text: #ffffff;
  --merc-bot-bubble: #1e293b;
  --merc-bot-text: #f8fafc;
  --merc-border-radius: 16px;
  --merc-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --merc-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.35), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
  --merc-z-index: 999999;
}

/* Light mode overrides */
.merciful-theme-light {
  --merc-bg: #ffffff;
  --merc-surface: #f8fafc;
  --merc-surface-hover: #f1f5f9;
  --merc-text: #0f172a;
  --merc-text-muted: #64748b;
  --merc-border: rgba(0, 0, 0, 0.1);
  --merc-bot-bubble: #f1f5f9;
  --merc-bot-text: #0f172a;
  --merc-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.05);
}

/* Widget Container */
#merciful-widget-container {
  font-family: var(--merc-font-family);
  position: fixed;
  z-index: var(--merc-z-index);
  bottom: 24px;
  right: 24px;
  box-sizing: border-box;
}

#merciful-widget-container.merciful-pos-left {
  right: auto;
  left: 24px;
}

#merciful-widget-container * {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Floating Launcher Button */
.merciful-launcher {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: var(--merc-primary);
  color: var(--merc-primary-text);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.2s ease;
  outline: none;
}

.merciful-launcher:hover {
  transform: scale(1.08);
  background: var(--merc-primary-hover);
}

.merciful-launcher:active {
  transform: scale(0.95);
}

.merciful-launcher svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
  transition: transform 0.2s ease;
}

/* Badge */
.merciful-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 14px;
  height: 14px;
  background: #ef4444;
  border: 2px solid var(--merc-bg);
  border-radius: 50%;
  display: none;
}

.merciful-badge.visible {
  display: block;
}

/* Chat Window */
.merciful-window {
  position: absolute;
  bottom: 72px;
  right: 0;
  width: 380px;
  height: 560px;
  max-width: calc(100vw - 32px);
  max-height: calc(100vh - 100px);
  background: var(--merc-bg);
  border-radius: var(--merc-border-radius);
  border: 1px solid var(--merc-border);
  box-shadow: var(--merc-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(16px) scale(0.96);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

#merciful-widget-container.merciful-pos-left .merciful-window {
  right: auto;
  left: 0;
}

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

/* Header */
.merciful-header {
  padding: 16px 20px;
  background: var(--merc-surface);
  border-bottom: 1px solid var(--merc-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.merciful-header-info {
  display: flex;
  flex-direction: column;
}

.merciful-header-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--merc-text);
  display: flex;
  align-items: center;
  gap: 6px;
}

.merciful-status-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  display: inline-block;
}

.merciful-header-subtitle {
  font-size: 12px;
  color: var(--merc-text-muted);
}

.merciful-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.merciful-btn-icon {
  background: transparent;
  border: none;
  color: var(--merc-text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease;
}

.merciful-btn-icon:hover {
  background: var(--merc-surface-hover);
  color: var(--merc-text);
}

.merciful-btn-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Messages Container */
.merciful-messages {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
}

.merciful-msg {
  display: flex;
  flex-direction: column;
  max-width: 85%;
  font-size: 14px;
  line-height: 1.5;
  word-break: break-word;
  animation: mercifulFadeIn 0.2s ease forwards;
}

@keyframes mercifulFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.merciful-msg.user {
  align-self: flex-end;
}

.merciful-msg.assistant {
  align-self: flex-start;
}

.merciful-msg-bubble {
  padding: 10px 14px;
  border-radius: 14px;
}

.merciful-msg.user .merciful-msg-bubble {
  background: var(--merc-user-bubble);
  color: var(--merc-user-text);
  border-bottom-right-radius: 4px;
}

.merciful-msg.assistant .merciful-msg-bubble {
  background: var(--merc-bot-bubble);
  color: var(--merc-bot-text);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--merc-border);
}

.merciful-msg.assistant .merciful-msg-bubble a {
  color: var(--merc-primary);
  text-decoration: underline;
  font-weight: 500;
}

.merciful-msg.user .merciful-msg-bubble a {
  color: #ffffff;
  text-decoration: underline;
}

.merciful-msg-time {
  font-size: 10px;
  color: var(--merc-text-muted);
  margin-top: 4px;
  align-self: flex-end;
}

.merciful-msg.assistant .merciful-msg-time {
  align-self: flex-start;
}

/* Typing / Progress Indicator */
.merciful-typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  background: var(--merc-bot-bubble);
  border-radius: 14px;
  border-bottom-left-radius: 4px;
  align-self: flex-start;
  border: 1px solid var(--merc-border);
}

.merciful-dot {
  width: 6px;
  height: 6px;
  background: var(--merc-text-muted);
  border-radius: 50%;
  animation: mercifulPulse 1.4s infinite ease-in-out;
}

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

@keyframes mercifulPulse {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* Footer & Input */
.merciful-footer {
  padding: 12px 16px;
  background: var(--merc-surface);
  border-top: 1px solid var(--merc-border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.merciful-input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
}

.merciful-textarea {
  flex: 1;
  background: var(--merc-bg);
  color: var(--merc-text);
  border: 1px solid var(--merc-border);
  border-radius: 20px;
  padding: 10px 14px;
  font-size: 14px;
  line-height: 1.4;
  outline: none;
  resize: none;
  max-height: 100px;
  min-height: 40px;
  font-family: inherit;
  transition: border-color 0.15s ease;
}

.merciful-textarea:focus {
  border-color: var(--merc-primary);
}

.merciful-btn-send {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--merc-primary);
  color: var(--merc-primary-text);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s ease, background 0.15s ease;
  flex-shrink: 0;
}

.merciful-btn-send:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.merciful-btn-send svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.merciful-powered-by {
  font-size: 10px;
  color: var(--merc-text-muted);
  text-align: center;
  opacity: 0.75;
}

.merciful-powered-by a {
  color: inherit;
  text-decoration: none;
  font-weight: 500;
}

.merciful-powered-by a:hover {
  text-decoration: underline;
  color: var(--merc-primary);
}

/* Mobile full-screen */
@media (max-width: 480px) {
  .merciful-window {
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    max-height: 100vh;
    bottom: 0;
    right: 0;
    border-radius: 0;
    border: none;
  }
  #merciful-widget-container {
    bottom: 16px;
    right: 16px;
  }
}