/* ============================================================
 * 福楽キャッテリー — AI Chat Widget (Fukunyan)
 * Vanilla JS port of fuluckai/frontend ChatPanel.vue
 * Scoped under .fuluck-chat-* — safe to drop on any page.
 * ============================================================ */

/* CSS variables fall back to widget defaults if host site lacks them. */
.fuluck-chat-root {
  --fc-bg: var(--bg-cream, #FFFCF0);
  --fc-surface: var(--bg-white, #FFFFFF);
  --fc-text: var(--text-heading, #5A7A7A);
  --fc-text-soft: var(--text-body, #5A6A6A);
  --fc-text-faint: var(--text-note, #90A8A8);
  --fc-glass-bg: var(--glass-bg, rgba(255, 252, 240, 0.86));
  --fc-glass-border: var(--glass-border, rgba(255, 255, 255, 0.6));
  --fc-glass-blur: var(--glass-blur, 20px);
  --fc-glass-saturate: var(--glass-saturate, 180%);
  --fc-accent: #FFB088;          /* warm peach to match cattery palette */
  --fc-accent-strong: #E8895C;
  --fc-shadow: 0 12px 32px rgba(90, 110, 110, 0.18), 0 2px 8px rgba(90, 110, 110, 0.08);
  --fc-radius: 18px;
  --fc-z: 9990;
  position: fixed;
  z-index: var(--fc-z);
  pointer-events: none;
  inset: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Noto Sans JP",
    "Segoe UI", Roboto, sans-serif;
  color: var(--fc-text);
}

.fuluck-chat-root *,
.fuluck-chat-root *::before,
.fuluck-chat-root *::after {
  box-sizing: border-box;
}

/* ===== Floating bubble ============================================ */
.fuluck-chat-bubble {
  position: absolute;
  left: 28px;              /* desktop: bottom-left so bubble doesn't block content / back-to-top */
  bottom: 108px;           /* desktop: stacked above legacy .fixed-line column on the right */
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--fc-surface);
  box-shadow: var(--fc-shadow);
  border: 1px solid var(--fc-glass-border);
  cursor: pointer;
  pointer-events: auto;
  display: grid;
  place-items: center;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.25s ease;
  -webkit-tap-highlight-color: transparent;
}

.fuluck-chat-bubble:hover,
.fuluck-chat-bubble:focus-visible {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 18px 38px rgba(90, 110, 110, 0.22), 0 4px 10px rgba(90, 110, 110, 0.10);
  outline: none;
}

.fuluck-chat-bubble:active {
  transform: translateY(-1px) scale(0.98);
}

.fuluck-chat-bubble[hidden] { display: none; }

.fuluck-chat-bubble-avatar {
  width: 48px;
  height: 48px;
  display: block;
  animation: fc-bob 3.4s ease-in-out infinite;
}

@keyframes fc-bob {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50%      { transform: translateY(-3px) rotate(2deg); }
}

/* tiny green dot to hint "I'm online" */
.fuluck-chat-bubble-pulse {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #4ade80;
  border: 2px solid var(--fc-surface);
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.55);
  animation: fc-pulse 2s ease-out infinite;
}

@keyframes fc-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.55); }
  70%  { box-shadow: 0 0 0 12px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

/* ===== Panel ====================================================== */
.fuluck-chat-panel {
  position: absolute;
  left: 28px;
  bottom: 108px;          /* anchor matches .fuluck-chat-bubble */
  width: 360px;
  max-width: calc(100vw - 24px);
  height: 540px;
  max-height: calc(100vh - 140px);
  background: var(--fc-glass-bg);
  -webkit-backdrop-filter: blur(var(--fc-glass-blur)) saturate(var(--fc-glass-saturate));
  backdrop-filter: blur(var(--fc-glass-blur)) saturate(var(--fc-glass-saturate));
  border: 1px solid var(--fc-glass-border);
  border-radius: var(--fc-radius);
  box-shadow: var(--fc-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  pointer-events: auto;
  transform-origin: bottom left;
  animation: fc-pop 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.fuluck-chat-panel[hidden] { display: none; }

@keyframes fc-pop {
  from { opacity: 0; transform: translateY(8px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ===== Header ===================================================== */
.fuluck-chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(90, 122, 122, 0.10);
  flex-shrink: 0;
}

.fuluck-chat-header-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FFE0CC, #FFC2A0);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.fuluck-chat-header-avatar svg {
  width: 28px;
  height: 28px;
}

.fuluck-chat-header-meta {
  flex: 1;
  min-width: 0;
}

.fuluck-chat-header-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--fc-text);
  letter-spacing: 0.02em;
}

.fuluck-chat-header-status {
  font-size: 11px;
  color: var(--fc-text-faint);
  display: flex;
  align-items: center;
  gap: 5px;
}

.fuluck-chat-header-status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4ade80;
  display: inline-block;
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6);
  animation: fc-status-online 2s ease-out infinite;
}

/* FAQ-mode (worker offline) — amber dot, no pulse, italic label */
.fuluck-chat-header-status.is-faq {
  color: #b88900;
  font-style: italic;
  cursor: help;
}
.fuluck-chat-header-status.is-faq::before {
  background: #f5b800;
  animation: none;
  box-shadow: none;
}

@keyframes fc-status-online {
  0%   { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.55); }
  70%  { box-shadow: 0 0 0 5px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

/* Inline LINE CTA inside FAQ-mode replies */
.fuluck-chat-faq-cta {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(90, 122, 122, 0.12);
  font-size: 12.5px;
  color: var(--fc-text-faint);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.fuluck-chat-faq-line {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: 999px;
  background: #06C755;
  color: #fff !important;
  font-weight: 600;
  font-size: 12px;
  text-decoration: none !important;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.fuluck-chat-faq-line:hover,
.fuluck-chat-faq-line:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(6, 199, 85, 0.35);
}

.fuluck-chat-header-actions {
  display: flex;
  gap: 4px;
}

.fuluck-chat-icon-btn {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  border-radius: 8px;
  color: var(--fc-text-faint);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.15s, color 0.15s;
}

.fuluck-chat-icon-btn:hover {
  background: rgba(90, 122, 122, 0.08);
  color: var(--fc-text);
}

.fuluck-chat-icon-btn svg {
  width: 16px;
  height: 16px;
}

/* ===== Message list =============================================== */
.fuluck-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scrollbar-width: thin;
  scrollbar-color: rgba(90, 122, 122, 0.18) transparent;
}

.fuluck-chat-messages::-webkit-scrollbar { width: 5px; }
.fuluck-chat-messages::-webkit-scrollbar-thumb {
  background: rgba(90, 122, 122, 0.18);
  border-radius: 3px;
}

.fuluck-chat-msg {
  display: flex;
  gap: 8px;
  animation: fc-fade 0.25s ease;
}

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

.fuluck-chat-msg.user { flex-direction: row-reverse; }

.fuluck-chat-msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  font-size: 14px;
  background: var(--fc-surface);
  border: 1px solid rgba(90, 122, 122, 0.10);
}

.fuluck-chat-msg.user .fuluck-chat-msg-avatar {
  background: linear-gradient(135deg, #FFD9B8, #FFB088);
  border-color: transparent;
  color: #fff;
}

.fuluck-chat-msg-bubble {
  max-width: 76%;
  padding: 9px 13px;
  font-size: 14px;
  line-height: 1.55;
  word-break: break-word;
  white-space: pre-wrap;
  border-radius: 14px;
  background: var(--fc-surface);
  color: var(--fc-text);
  border: 1px solid rgba(90, 122, 122, 0.08);
  border-bottom-left-radius: 4px;
}

.fuluck-chat-msg.user .fuluck-chat-msg-bubble {
  background: linear-gradient(135deg, #FFD9B8, #FFB088);
  color: #5a3825;
  border-color: transparent;
  border-bottom-left-radius: 14px;
  border-bottom-right-radius: 4px;
}

.fuluck-chat-msg-bubble a {
  color: var(--fc-accent-strong);
  text-decoration: underline;
}

/* typing indicator */
.fuluck-chat-typing {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  padding: 4px 0;
}

.fuluck-chat-typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fc-text-faint);
  animation: fc-typing 1.2s ease-in-out infinite;
}

.fuluck-chat-typing span:nth-child(2) { animation-delay: 0.15s; }
.fuluck-chat-typing span:nth-child(3) { animation-delay: 0.30s; }

@keyframes fc-typing {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30%           { transform: translateY(-4px); opacity: 1; }
}

/* ===== Quick replies ============================================== */
.fuluck-chat-quick {
  padding: 6px 14px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex-shrink: 0;
}

.fuluck-chat-chip {
  border: 1px solid rgba(90, 122, 122, 0.15);
  background: var(--fc-surface);
  color: var(--fc-text);
  font-size: 12px;
  font-family: inherit;
  padding: 6px 11px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
  white-space: nowrap;
}

.fuluck-chat-chip:hover {
  background: linear-gradient(135deg, #FFE6D2, #FFD0B0);
  border-color: transparent;
  transform: translateY(-1px);
}

/* ===== Input ====================================================== */
.fuluck-chat-input-wrap {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 10px 14px;
  padding-bottom: max(10px, env(safe-area-inset-bottom));
  border-top: 1px solid rgba(90, 122, 122, 0.08);
  flex-shrink: 0;
}

.fuluck-chat-input {
  flex: 1;
  min-height: 38px;
  max-height: 110px;
  padding: 9px 12px;
  border-radius: 12px;
  border: 1px solid rgba(90, 122, 122, 0.18);
  background: var(--fc-surface);
  color: var(--fc-text);
  font-size: 14px;
  font-family: inherit;
  resize: none;
  outline: none;
  line-height: 1.4;
  transition: border-color 0.15s;
}

.fuluck-chat-input::placeholder { color: var(--fc-text-faint); }
.fuluck-chat-input:focus { border-color: var(--fc-accent); }

.fuluck-chat-send {
  width: 38px;
  height: 38px;
  border: none;
  border-radius: 50%;
  background: rgba(90, 122, 122, 0.12);
  color: var(--fc-text-faint);
  cursor: pointer;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  transition: background 0.15s, transform 0.15s, color 0.15s;
}

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

.fuluck-chat-send.is-active {
  background: linear-gradient(135deg, #FFD9B8, #FFB088);
  color: #fff;
}

.fuluck-chat-send.is-active:hover { transform: scale(1.05); }
.fuluck-chat-send:disabled { cursor: default; }

/* ===== Privacy notice ============================================= */
.fuluck-chat-privacy {
  font-size: 10.5px;
  color: var(--fc-text-faint);
  text-align: center;
  padding: 4px 14px 8px;
  line-height: 1.4;
  flex-shrink: 0;
}

.fuluck-chat-privacy a {
  color: var(--fc-accent-strong);
  text-decoration: none;
}

.fuluck-chat-privacy a:hover { text-decoration: underline; }

/* ===== Mobile ===================================================== */
@media (max-width: 640px) {
  .fuluck-chat-bubble {
    width: 56px;
    height: 56px;
    left: 12px;
    /* Sit above .mobile-cta-bar (76px reserve) + safe-area inset */
    bottom: calc(88px + env(safe-area-inset-bottom, 0px));
  }

  .fuluck-chat-bubble-avatar { width: 42px; height: 42px; }

  .fuluck-chat-panel {
    right: 8px;
    left: 8px;
    bottom: calc(88px + env(safe-area-inset-bottom, 0px));
    width: auto;
    max-width: none;
    height: calc(100vh - 120px);
    max-height: calc(100vh - 110px);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .fuluck-chat-bubble-avatar,
  .fuluck-chat-bubble-pulse,
  .fuluck-chat-typing span {
    animation: none !important;
  }
  .fuluck-chat-panel { animation: none; }
}

/* Hide on print */
@media print {
  .fuluck-chat-root { display: none !important; }
}