/* ============================================
   miyabi-ai.jp Sales Chat Widget
   合同会社みやび — 営業チャットボット
   ============================================ */

:root {
  --miyabi-black: #0a0a0a;
  --miyabi-gold: #c9a84c;
  --miyabi-gold-light: #e8d48b;
  --miyabi-white: #f5f5f5;
  --miyabi-gray: #2a2a2a;
  --miyabi-user-bubble: #1a1a2e;
  --miyabi-bot-bubble: #16213e;
  --miyabi-widget-w: 400px;
  --miyabi-widget-h: 550px;
  --miyabi-btn-size: 60px;
  --miyabi-anim-speed: 300ms;
  --miyabi-radius: 16px;
  --miyabi-margin: 20px;
}

/* ── Floating button ── */
.miyabi-chat-btn {
  position: fixed;
  bottom: var(--miyabi-margin);
  right: var(--miyabi-margin);
  width: var(--miyabi-btn-size);
  height: var(--miyabi-btn-size);
  border-radius: 50%;
  background: var(--miyabi-gold);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.4);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--miyabi-anim-speed) ease-out,
              box-shadow var(--miyabi-anim-speed) ease-out;
}

.miyabi-chat-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(201, 168, 76, 0.55);
}

.miyabi-chat-btn svg {
  width: 28px;
  height: 28px;
  fill: var(--miyabi-black);
  transition: opacity var(--miyabi-anim-speed);
}

.miyabi-chat-btn .miyabi-icon-close {
  display: none;
}

.miyabi-chat-btn[aria-expanded="true"] .miyabi-icon-chat {
  display: none;
}

.miyabi-chat-btn[aria-expanded="true"] .miyabi-icon-close {
  display: block;
}

/* Tooltip */
.miyabi-chat-btn::after {
  content: "AIに質問する";
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--miyabi-black);
  color: var(--miyabi-white);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms;
}

.miyabi-chat-btn:hover::after {
  opacity: 1;
}

.miyabi-chat-btn[aria-expanded="true"]::after {
  display: none;
}

/* Badge (proactive notification) */
.miyabi-chat-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #e74c3c;
  border: 2px solid #fff;
  display: none;
  animation: miyabi-badge-pulse 1.5s ease-in-out infinite;
}

.miyabi-chat-badge.active {
  display: block;
}

@keyframes miyabi-badge-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

/* ── Chat window ── */
.miyabi-chat-window {
  position: fixed;
  bottom: calc(var(--miyabi-margin) + var(--miyabi-btn-size) + 16px);
  right: var(--miyabi-margin);
  width: var(--miyabi-widget-w);
  height: var(--miyabi-widget-h);
  background: var(--miyabi-black);
  border-radius: var(--miyabi-radius);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 99998;
  transform: scale(0.6) translateY(20px);
  opacity: 0;
  pointer-events: none;
  transform-origin: bottom right;
  transition: transform var(--miyabi-anim-speed) ease-out,
              opacity var(--miyabi-anim-speed) ease-out;
}

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

/* ── Header ── */
.miyabi-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: var(--miyabi-black);
  border-bottom: 1px solid var(--miyabi-gray);
  flex-shrink: 0;
}

.miyabi-chat-header-title {
  color: var(--miyabi-gold);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.miyabi-chat-header-status {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #888;
  font-size: 11px;
}

.miyabi-chat-header-status::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4caf50;
  display: inline-block;
}

/* ── Messages area ── */
.miyabi-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--miyabi-gray) transparent;
}

.miyabi-chat-messages::-webkit-scrollbar {
  width: 5px;
}

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

.miyabi-chat-messages::-webkit-scrollbar-thumb {
  background: var(--miyabi-gray);
  border-radius: 3px;
}

/* ── Message bubbles ── */
.miyabi-msg {
  max-width: 82%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.55;
  word-break: break-word;
  animation: miyabi-msg-in var(--miyabi-anim-speed) ease-out;
}

@keyframes miyabi-msg-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.miyabi-msg-bot {
  align-self: flex-start;
  background: var(--miyabi-bot-bubble);
  color: var(--miyabi-white);
  border-bottom-left-radius: 4px;
}

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

.miyabi-msg-bot a {
  color: var(--miyabi-gold-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.miyabi-msg-bot a:hover {
  color: var(--miyabi-gold);
}

.miyabi-msg-bot b {
  color: var(--miyabi-gold-light);
}

/* ── Typing indicator ── */
.miyabi-typing {
  align-self: flex-start;
  display: none;
  gap: 5px;
  padding: 12px 18px;
  background: var(--miyabi-bot-bubble);
  border-radius: 14px;
  border-bottom-left-radius: 4px;
}

.miyabi-typing.active {
  display: flex;
}

.miyabi-typing-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--miyabi-gold-light);
  animation: miyabi-typing-bounce 1.2s ease-in-out infinite;
}

.miyabi-typing-dot:nth-child(2) {
  animation-delay: 0.15s;
}

.miyabi-typing-dot:nth-child(3) {
  animation-delay: 0.3s;
}

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

/* ── Quick actions ── */
.miyabi-quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.miyabi-quick-btn {
  background: transparent;
  border: 1px solid var(--miyabi-gold);
  color: var(--miyabi-gold);
  padding: 7px 14px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: background 200ms, color 200ms;
}

.miyabi-quick-btn:hover {
  background: var(--miyabi-gold);
  color: var(--miyabi-black);
}

/* ── Input area ── */
.miyabi-chat-input-area {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-top: 1px solid var(--miyabi-gray);
  background: var(--miyabi-black);
  flex-shrink: 0;
}

.miyabi-chat-input {
  flex: 1;
  background: var(--miyabi-gray);
  border: 1px solid transparent;
  border-radius: 22px;
  padding: 10px 16px;
  color: var(--miyabi-white);
  font-size: 14px;
  outline: none;
  transition: border-color 200ms;
}

.miyabi-chat-input::placeholder {
  color: #777;
}

.miyabi-chat-input:focus {
  border-color: var(--miyabi-gold);
}

.miyabi-chat-send {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--miyabi-gold);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: opacity 200ms;
}

.miyabi-chat-send:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.miyabi-chat-send svg {
  width: 18px;
  height: 18px;
  fill: var(--miyabi-black);
}

/* ── Responsive: tablet ── */
@media (max-width: 768px) {
  :root {
    --miyabi-widget-w: 380px;
    --miyabi-widget-h: 500px;
  }
}

/* ── Responsive: mobile full-screen ── */
@media (max-width: 480px) {
  .miyabi-chat-window {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100% !important;
    height: 100% !important;
    max-height: -webkit-fill-available;
    border-radius: 0;
    transform-origin: bottom center;
    /* iOS safe area support */
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
  }

  .miyabi-chat-window.open {
    transform: scale(1) translateY(0);
  }

  .miyabi-chat-btn {
    bottom: calc(var(--miyabi-margin) + env(safe-area-inset-bottom, 0px));
    right: calc(var(--miyabi-margin) + env(safe-area-inset-right, 0px));
  }

  .miyabi-chat-btn[aria-expanded="true"] {
    display: none;
  }

  .miyabi-chat-header {
    padding: 16px 18px;
    padding-top: calc(16px + env(safe-area-inset-top, 0px));
  }

  .miyabi-chat-input-area {
    padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  }

  /* Mobile close button inside header */
  .miyabi-chat-header-close {
    display: block;
  }

  /* Fix iOS keyboard push */
  .miyabi-chat-input:focus {
    font-size: 16px; /* Prevent iOS zoom on input focus */
  }
}

/* Desktop: hide in-header close */
@media (min-width: 481px) {
  .miyabi-chat-header-close {
    display: none;
  }
}

.miyabi-chat-header-close {
  background: none;
  border: none;
  color: var(--miyabi-gold);
  font-size: 22px;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}