/* ============================================
   REN CHAT FAB + POPUP
   Floating chat widget — loads on all pages
   via base-app.html. Self-contained component.
   ============================================ */

/* ============================================
   FAB BUTTON
   ============================================ */
.ren-chat-fab {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  background: transparent;
  border-radius: 16px;
  border: none;
  outline: none;
  display: flex;
  flex-direction: row-reverse;
  align-items: flex-end;
  gap: 0;
  cursor: pointer;
  z-index: 1000;
  padding: 0;
  transition: none;
}

.ren-fab-icon {
  position: relative;
  width: 67px;
  height: 67px;
  flex-shrink: 0;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.15));
  z-index: 2;
  margin-bottom: 14px;
}

.ren-bubbles {
  width: 100%;
  height: 100%;
}

.ren-bubble-back-path {
  fill: var(--pink);
  transition: fill 0.3s ease;
}
.ren-bubble-back-dot {
  fill: #fff;
  transition: fill 0.3s ease;
}
.ren-bubble-front-path {
  fill: #fff;
  stroke: var(--pink);
  stroke-width: 1;
  stroke-linejoin: round;
  transition: fill 0.3s ease, stroke 0.3s ease;
}
.ren-bubble-front-dot {
  fill: var(--pink);
  transition: fill 0.3s ease;
}

.ren-chat-fab:hover .ren-bubble-back-path { fill: rgba(255,255,255,0.5); }
.ren-chat-fab:hover .ren-bubble-back-dot { fill: rgba(255,255,255,0.8); }
.ren-chat-fab:hover .ren-bubble-front-path { fill: #fff; stroke: #fff; }
.ren-chat-fab:hover .ren-bubble-front-dot { fill: var(--pink); }

.ren-fab-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 14px 16px 14px 16px;
  background: transparent;
  border-radius: 16px 0 0 16px;
  opacity: 0;
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  transition: max-width 0.35s cubic-bezier(.4,0,.2,1),
              opacity 0.25s ease,
              padding 0.35s cubic-bezier(.4,0,.2,1);
  padding-left: 0;
  padding-right: 0;
}

.ren-chat-fab:hover .ren-fab-text {
  max-width: 120px;
  opacity: 1;
  padding: 14px 16px 14px 16px;
}

.ren-chat-fab::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 60px;
  border-radius: 16px;
  background: var(--pink);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.ren-chat-fab:hover::before {
  opacity: 1;
}

.ren-chat-fab:hover {
  padding: 0;
}

.ren-chat-fab > * {
  position: relative;
  z-index: 1;
}

.ren-fab-title {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-family);
  line-height: 1.1;
}

.ren-fab-sparkle {
  font-size: 11px;
  opacity: 0.7;
}

.ren-fab-subtitle {
  color: rgba(255,255,255,0.75);
  font-size: 10px;
  font-weight: 600;
  font-family: var(--font-family);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  line-height: 1.2;
}

/* ============================================
   CHAT POPUP
   ============================================ */
.ren-chat-popup {
  position: fixed;
  bottom: calc(var(--space-8) + 60px);
  right: var(--space-8);
  width: 380px;
  height: 520px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.16), 0 0 0 1px rgba(0, 0, 0, 0.04);
  display: flex;
  flex-direction: column;
  z-index: 1001;
  overflow: hidden;
  opacity: 0;
  transform: translateY(12px) scale(0.96);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  visibility: hidden;
}

.ren-chat-popup.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
  visibility: visible;
}

/* ============================================
   HEADER
   ============================================ */
.ren-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--gray-light);
}

.ren-chat-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.ren-chat-avatar {
  width: var(--chat-avatar-size);
  height: var(--chat-avatar-size);
  border-radius: var(--radius-full);
  background: var(--pink);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.ren-chat-avatar svg {
  width: var(--icon-size-md);
  height: var(--icon-size-md);
  color: var(--white);
}

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

.ren-chat-header-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.ren-chat-header-name {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--black);
}

.ren-chat-status-dot {
  width: var(--chat-status-dot);
  height: var(--chat-status-dot);
  border-radius: var(--radius-full);
  background: var(--positive);
}

.ren-chat-header-subtitle {
  font-size: var(--text-sm);
  color: var(--gray-dark);
}

.ren-chat-close {
  width: var(--chat-close-size);
  height: var(--chat-close-size);
  border: none;
  background: transparent;
  color: var(--gray-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.ren-chat-close:hover {
  background: var(--gray-background);
  color: var(--black);
}

.ren-chat-close svg {
  width: var(--chat-close-icon);
  height: var(--chat-close-icon);
}

/* ============================================
   BODY + MESSAGES
   ============================================ */
.ren-chat-body {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  background: linear-gradient(to bottom, var(--white) 60%, var(--gray-background) 100%);
}

.ren-chat-messages {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.ren-chat-message {
  max-width: 85%;
  font-size: var(--text-base);
  line-height: 1.5;
}

.ren-chat-message p {
  margin: 0;
}

.ren-message {
  align-self: flex-start;
  background: transparent;
  color: var(--black);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  border-top-left-radius: var(--radius-xs);
}

.ren-link {
  color: var(--color-pink);
  text-decoration: none;
  font-weight: var(--font-medium);
}

.ren-link:hover {
  text-decoration: underline;
}

.user-message {
  background: var(--gray-background);
  color: var(--black);
  align-self: flex-end;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-xs);
}

/* ============================================
   INPUT AREA
   ============================================ */
.ren-chat-input-area {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--gray-background);
}

.ren-chat-input {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  line-height: 1.5;
  font-family: var(--font-family);
  outline: none;
  transition: border-color var(--transition-fast);
  background: var(--white);
  resize: none;
  overflow-y: auto;
  min-height: 38px;
  max-height: 120px;
}

.ren-chat-input::placeholder {
  font-size: var(--text-base);
  font-family: var(--font-family);
  color: var(--gray-dark);
}

.ren-chat-input:focus {
  border-color: var(--gray-light);
}

.ren-chat-send {
  width: 38px;
  height: 38px;
  border: none;
  background: var(--black);
  color: white;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition-fast);
}

.ren-chat-send:hover {
  background: var(--fuchsia);
}

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

/* ============================================
   CONVERSATION STARTERS
   ============================================ */
.ren-starters {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: 0 var(--space-5) var(--space-3);
}

.ren-starter-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-normal);
  color: var(--black);
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
  line-height: 1.4;
  font-family: var(--font-family);
}

.ren-starter-btn:hover {
  border-color: var(--fuchsia);
  background: var(--gray-background);
}

.ren-starter-icon {
  width: var(--icon-size-starter);
  height: var(--icon-size-starter);
  border-radius: var(--radius-sm);
  background: var(--gray-background);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition-fast);
}

.ren-starter-btn:hover .ren-starter-icon {
  background: var(--pink);
}

.ren-starter-icon svg {
  width: var(--icon-size-starter-svg);
  height: var(--icon-size-starter-svg);
  color: var(--gray-dark);
  transition: color var(--transition-fast);
}

.ren-starter-btn:hover .ren-starter-icon svg {
  color: var(--white);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.ren-chat-message.animate-in {
  animation: renMessageSlideIn var(--anim-duration-fast) ease-out forwards;
  opacity: 0;
}

@keyframes renMessageSlideIn {
  from { opacity: 0; transform: translateY(var(--anim-offset-md)); }
  to { opacity: 1; transform: translateY(0); }
}

.ren-starters.animate-in {
  animation: renStartersFadeIn var(--anim-duration-fast) ease-out var(--transition-slow) forwards;
  opacity: 0;
}

@keyframes renStartersFadeIn {
  from { opacity: 0; transform: translateY(var(--anim-offset-sm)); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   TYPING INDICATOR
   ============================================ */
.ren-typing {
  display: flex;
  gap: 4px;
  padding: 4px 0;
}

.ren-typing span {
  width: 6px;
  height: 6px;
  background: var(--gray-mid);
  border-radius: var(--radius-full);
  animation: typingBounce 1.4s ease-in-out infinite;
}

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

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-4px); }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .ren-chat-popup {
    width: calc(100% - 32px);
    right: 16px;
    bottom: 100px;
    height: 60vh;
  }

  .ren-chat-fab {
    bottom: 20px;
    right: 20px;
  }
  .ren-fab-icon {
    width: 56px;
    height: 56px;
  }
}