/* ============================================
   Rooms (LINE-like topic chat rooms)
   ============================================ */

.rooms-shell {
  display: grid;
  grid-template-columns: 280px 1fr 240px;
  height: calc(100vh - var(--header-h));
  background: var(--bg);
}

@media (max-width: 1100px) {
  .rooms-shell { grid-template-columns: 240px 1fr; }
  .rooms-right { display: none; }
}

@media (max-width: 768px) {
  .rooms-shell { grid-template-columns: 1fr; }
  .rooms-left { display: none; }
}

/* LEFT SIDEBAR (room list) */
.rooms-left {
  border-right: 1px solid var(--border);
  background: var(--bg-elevated);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.rooms-left::-webkit-scrollbar { width: 8px; }
.rooms-left::-webkit-scrollbar-track { background: transparent; }
.rooms-left::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.rooms-left::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

.rooms-left-head {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--bg-elevated);
}

.rooms-left-foot {
  margin-top: auto;
  padding: 16px 20px 20px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.rooms-left-head h2 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 12px;
}

.room-search {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  border-radius: var(--radius-full);
  padding: 8px 14px;
  font-size: 13px;
  outline: none;
}

.rooms-section {
  margin-top: 16px;
  padding: 0 12px;
}

.rooms-section:last-child {
  padding-bottom: 24px;
}

.rooms-section-h {
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
  padding: 8px 8px 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.rooms-section-h button {
  color: var(--text-muted);
  padding: 2px;
}

.rooms-section-h button:hover { color: var(--accent); }

.room-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text-secondary);
  transition: all var(--t-fast);
  cursor: pointer;
}

.room-item:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

.room-item.is-active {
  background: var(--bg-subtle);
  color: var(--text-primary);
  font-weight: 600;
}

.room-item.has-unread::after {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  margin-left: auto;
  flex-shrink: 0;
}

.room-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 14px;
  flex-shrink: 0;
  font-weight: 700;
}

.room-name {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.room-count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Red live-dot: shown only on rooms with at least one active participant.
   Toggled via .is-live class set in script.js whenever room-count > 0. */
.room-count.is-live::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #FF4521;
  box-shadow: 0 0 0 0 rgba(255, 69, 33, 0.5);
  animation: room-live-pulse 1.6s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes room-live-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255, 69, 33, 0.55); opacity: 1; }
  70%  { box-shadow: 0 0 0 6px rgba(255, 69, 33, 0);  opacity: 0.85; }
  100% { box-shadow: 0 0 0 0 rgba(255, 69, 33, 0);    opacity: 1; }
}

/* MAIN CHAT AREA */
.rooms-main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
}

.rooms-main-head {
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-elevated);
}

.rooms-main-head .room-icon {
  width: 36px;
  height: 36px;
}

.rooms-main-head-info {
  flex: 1;
}

.rooms-main-head-info h3 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.rooms-main-head-info p {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.rooms-banner {
  background: linear-gradient(90deg, var(--accent-soft), transparent);
  border-bottom: 1px solid var(--border);
  padding: 10px 24px;
  font-size: 13px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.rooms-banner svg { color: var(--accent); flex-shrink: 0; }

.rooms-stream {
  flex: 1;
  overflow-y: auto;
  padding: 24px 24px 12px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.day-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 12px 0;
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.16em;
  color: var(--text-muted);
}

.day-divider::before, .day-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.chat-msg {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 4px 8px;
  border-radius: var(--radius);
  margin-left: -8px;
  margin-right: -8px;
  transition: background-color var(--t-fast);
  position: relative;
}

.chat-msg:hover { background: var(--bg-hover); }

.chat-msg .avatar { flex-shrink: 0; }

.chat-msg.is-anon .avatar {
  background: var(--bg-subtle) !important;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-style: italic;
}

.chat-body { flex: 1; min-width: 0; }

.chat-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}

.chat-head strong {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.005em;
}

.chat-head .anon-tag {
  font-size: 10px;
  padding: 1px 6px;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.chat-head .role-tag {
  font-size: 10px;
  padding: 1px 6px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.chat-head time {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.chat-text {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-primary);
  word-break: break-word;
}

.chat-text a { color: var(--accent); border-bottom: 1px solid transparent; }
.chat-text a:hover { border-bottom-color: var(--accent); }

.chat-image {
  margin-top: 8px;
  max-width: 320px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}

.chat-reactions {
  display: flex;
  gap: 4px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.reaction {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--t-fast);
}

.reaction:hover { border-color: var(--border-strong); }

.reaction.is-on {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.reaction-add {
  width: 26px;
  height: 26px;
  border: 1px dashed var(--border-strong);
  background: transparent;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  transition: all var(--t-fast);
}

.chat-msg:hover .reaction-add { opacity: 1; }

/* Reply quote inside a chat message */
.chat-reply-quote {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  margin-bottom: 6px;
  background: var(--bg-subtle);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.4;
  text-decoration: none;
  transition: background-color var(--t-fast);
  max-width: 100%;
}

.chat-reply-quote:hover {
  background: var(--bg-hover);
}

.chat-reply-quote svg {
  color: var(--accent);
  flex-shrink: 0;
}

.chat-reply-quote strong {
  color: var(--text-primary);
  font-weight: 600;
  flex-shrink: 0;
}

.chat-reply-quote .reply-quote-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

/* Reply preview in composer */
.composer-card .reply-preview {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  border-top-left-radius: var(--radius);
  border-top-right-radius: var(--radius);
}

.reply-preview-bar {
  width: 3px;
  background: var(--accent);
  border-radius: 2px;
  align-self: stretch;
  flex-shrink: 0;
}

.reply-preview-body {
  flex: 1;
  min-width: 0;
}

.reply-preview-head {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  margin-bottom: 4px;
  color: var(--text-muted);
}

.reply-preview-head svg {
  color: var(--accent);
}

.reply-preview-head strong {
  font-size: 12px;
  color: var(--text-primary);
  font-weight: 600;
}

.reply-preview-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.reply-preview-close {
  flex-shrink: 0;
  align-self: flex-start;
  padding: 4px;
  color: var(--text-muted);
}

.reply-preview-close:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
  border-radius: 4px;
}

/* Hover toolbar for messages */
.chat-msg-tools {
  position: absolute;
  top: -12px;
  right: 16px;
  display: flex;
  gap: 2px;
  padding: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-fast);
  z-index: 2;
}

.chat-msg:hover .chat-msg-tools,
.chat-msg-tools:has(.quick-emoji-panel) {
  opacity: 1;
  pointer-events: auto;
}

/* Invisible bridge between toolbar and panel so hovering across the gap doesn't break */
.chat-msg-tools:has(.quick-emoji-panel)::before {
  content: "";
  position: absolute;
  top: -52px;
  left: 0;
  right: 0;
  height: 56px;
  pointer-events: auto;
}

.chat-msg-tools button {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--t-fast);
}

.chat-msg-tools button:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

/* Pinned message visual indicator */
.chat-msg.is-pinned {
  background: linear-gradient(to right, rgba(255, 69, 33, 0.04), transparent 60%);
  border-left: 2px solid var(--accent);
  padding-left: 8px;
}

.chat-msg.is-pinned::before {
  content: "";
  position: absolute;
  top: 6px;
  left: -2px;
  width: 18px;
  height: 18px;
  background: var(--accent);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'%3E%3Cpath d='M12 2L8 6v6l-3 3v2h6v5l1 1 1-1v-5h6v-2l-3-3V6l-4-4z'/%3E%3C/svg%3E") center/contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'%3E%3Cpath d='M12 2L8 6v6l-3 3v2h6v5l1 1 1-1v-5h6v-2l-3-3V6l-4-4z'/%3E%3C/svg%3E") center/contain no-repeat;
  display: none;
}

.chat-msg.is-pinned .chat-head::before {
  content: "📌 ピン留め中";
  font-size: 10px;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-right: 4px;
}

/* Pin button is highlighted when message is pinned */
.chat-msg.is-pinned .chat-msg-tools button[data-msg-pin] {
  color: var(--accent);
  background: var(--accent-soft);
}

/* When the emoji panel is open, highlight the trigger button */
.chat-msg-tools:has(.quick-emoji-panel) button[data-msg-react] {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

/* ============================================
   Quick Emoji Reaction Panel (click to open)
   ============================================ */
.quick-emoji-panel {
  position: absolute;
  top: -50px;
  right: 50%;
  transform: translateX(50%);
  display: flex;
  gap: 2px;
  padding: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  z-index: 10;
  animation: quickEmojiIn 0.18s var(--ease) backwards;
}

@keyframes quickEmojiIn {
  from { opacity: 0; transform: translate(50%, 4px) scale(0.9); }
  to { opacity: 1; transform: translate(50%, 0) scale(1); }
}

.quick-emoji-btn {
  width: 36px;
  height: 36px;
  border: 0;
  background: transparent;
  border-radius: 50%;
  font-size: 22px;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all var(--t-fast);
  line-height: 1;
}

.quick-emoji-btn:hover {
  background: var(--bg-subtle);
  transform: scale(1.2);
}

.quick-emoji-btn.is-flash {
  background: var(--accent-soft);
  animation: emojiFlash 0.22s ease-out;
}

@keyframes emojiFlash {
  0% { transform: scale(1); }
  50% { transform: scale(1.4); }
  100% { transform: scale(1); }
}

/* Stacked message (no avatar) */
.chat-msg.is-stacked .avatar { visibility: hidden; }
.chat-msg.is-stacked .chat-head { display: none; }
.chat-msg.is-stacked { padding-top: 0; padding-bottom: 0; }

/* System message */
.chat-system {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  padding: 8px 0;
}

/* Composer */
.rooms-composer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

.composer-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  transition: border-color var(--t-fast);
}

.composer-card:focus-within { border-color: var(--text-primary); }

.composer-input {
  width: 100%;
  border: 0;
  outline: none;
  background: transparent;
  padding: 12px 16px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--text-primary);
  resize: none;
  min-height: 44px;
  max-height: 160px;
  line-height: 1.5;
}

.composer-foot {
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-top: 1px solid var(--border);
}

.composer-tools {
  display: flex;
  gap: 2px;
}

.composer-tools button {
  padding: 6px;
  color: var(--text-muted);
  border-radius: 6px;
}

.composer-tools button:hover {
  color: var(--text-primary);
  background: var(--bg-subtle);
}

.anon-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  margin-left: auto;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  transition: all var(--t-fast);
}

.anon-toggle.is-on {
  background: var(--accent-soft);
  color: var(--accent);
}

.anon-toggle::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background-color var(--t-fast);
}

.anon-toggle.is-on::before { background: var(--accent); }

/* RIGHT SIDEBAR (members) */
.rooms-right {
  border-left: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 20px 16px;
  overflow-y: auto;
}

.rooms-right h3 {
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 12px;
  padding: 0 8px;
}

.member-mini {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color var(--t-fast);
  font-size: 13px;
}

.member-mini:hover { background: var(--bg-subtle); }

.member-mini.is-anon {
  color: var(--text-muted);
  font-style: italic;
}

.member-mini-name {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.member-mini-status {
  font-size: 9px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

/* GUEST BANNER */
.guest-banner {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--bg);
  padding: 14px 24px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  box-shadow: var(--shadow-xl);
  z-index: 50;
}

.guest-banner svg { color: var(--accent); }

@media (max-width: 600px) {
  .guest-banner { left: 12px; right: 12px; transform: none; flex-direction: column; }
}

/* New room color picker */
.color-pick input[type="radio"]:checked + span {
  border: 2px solid var(--text-primary) !important;
  transform: scale(1.1);
}
.color-pick span {
  transition: all var(--t-fast);
}
.color-pick:hover span {
  transform: scale(1.05);
}

.emoji-suggest:hover {
  background: var(--bg-subtle) !important;
  border-color: var(--border-strong) !important;
}

/* Empty state for rooms */
.rooms-stream-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
  color: var(--text-muted);
}

.rooms-stream-empty .empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.rooms-stream-empty h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.rooms-stream-empty p {
  font-size: 13px;
  line-height: 1.7;
  max-width: 360px;
}

/* ============================================
   Emoji Picker
   ============================================ */
.emoji-picker {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  width: 320px;
  max-height: 360px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: 100;
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.emoji-picker.is-open { display: flex; }

.emoji-picker-search {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.emoji-picker-search input {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  border-radius: var(--radius-full);
  padding: 6px 12px;
  font-size: 13px;
  outline: none;
  color: var(--text-primary);
  font-family: inherit;
}

.emoji-picker-search input:focus { border-color: var(--text-primary); }

.emoji-picker-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.emoji-picker-body::-webkit-scrollbar { width: 6px; }
.emoji-picker-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.emoji-cat {
  font-size: 10px;
  font-family: var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
  margin: 8px 4px 6px;
}

.emoji-cat:first-child { margin-top: 0; }

.emoji-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 2px;
}

.emoji-btn {
  aspect-ratio: 1;
  border-radius: 6px;
  font-size: 20px;
  display: grid;
  place-items: center;
  cursor: pointer;
  background: transparent;
  border: none;
  transition: background-color var(--t-fast);
  line-height: 1;
}

.emoji-btn:hover { background: var(--bg-subtle); }

.emoji-picker-foot {
  padding: 8px 12px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  flex-shrink: 0;
  min-height: 32px;
  display: flex;
  align-items: center;
}

.composer-tools { position: relative; }
.composer-foot { position: relative; }