/* ==========================================================================
   🐓 KokioTalk (코끼오톡) — KakaoTalk Identical Design System + AI Rich UI
   ========================================================================== */

:root {
  --kakao-yellow: #FEE500;
  --kakao-yellow-hover: #F5DC00;
  --kakao-brown: #3A1D1D;
  --nav-bg: #26292E;
  --nav-text: #8D929C;
  --nav-active: #FFFFFF;
  --list-bg: #FFFFFF;
  --list-hover: #F6F7F9;
  --list-active: #EFEFEF;
  --border-color: #E6E8EB;
  --text-primary: #191919;
  --text-secondary: #767676;
  --text-muted: #999999;
  --chat-bg: #BACEE0;
  --chat-header-bg: rgba(186, 206, 224, 0.94);
  --my-bubble-bg: #FEE500;
  --my-bubble-text: #191919;
  --other-bubble-bg: #FFFFFF;
  --other-bubble-text: #191919;
  --unread-num-color: #FFEC42;
  --unread-num-shadow: rgba(0, 0, 0, 0.35);
  --badge-red: #FF5442;
  --ai-accent: #5B5FC7;
  --ea-accent: #00897B;
}

body.theme-dark {
  --nav-bg: #121417;
  --list-bg: #181A1F;
  --list-hover: #22262D;
  --list-active: #2B303A;
  --border-color: #2C313A;
  --text-primary: #ECEFF4;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --chat-bg: #14161A;
  --chat-header-bg: rgba(20, 22, 26, 0.96);
  --my-bubble-bg: #E5CD00;
  --my-bubble-text: #191919;
  --other-bubble-bg: #252932;
  --other-bubble-text: #ECEFF4;
  --unread-num-color: #FEE500;
}

.profile-pill-select {
  background: #FFF9DB;
  border: 1px solid #E5CD00;
  border-radius: 8px;
  padding: 3px 6px;
  font-weight: 700;
  color: #191919;
}

body.theme-dark .profile-pill-select {
  background: #252932;
  border-color: #3E4452;
  color: #ECEFF4;
}

body.theme-dark .squircle-avatar {
  background: linear-gradient(135deg, #282C34, #1F232A);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

body.theme-dark .squircle-avatar.ai-avatar {
  background: linear-gradient(135deg, #262A40, #1E2235);
  box-shadow: inset 0 0 0 1.5px #6366F1;
}

body.theme-dark .ai-pill {
  background: rgba(99, 102, 241, 0.18);
  color: #A5B4FC;
  border-color: rgba(99, 102, 241, 0.35);
}

body.theme-dark .chat-header {
  border-bottom: 1px solid var(--border-color);
}

body.theme-dark .mobile-back-btn {
  color: var(--text-primary);
}

body.theme-dark .member-count-pill {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

body.theme-dark .sender-switch-wrap {
  background: #232730;
  border: 1px solid var(--border-color);
}

body.theme-dark .sender-select {
  color: var(--text-primary);
  background: #232730;
}

body.theme-dark .header-tool-btn {
  background: #232730;
  border-color: var(--border-color);
  color: var(--text-primary);
}
body.theme-dark .header-tool-btn:hover {
  background: #2E333E;
}
body.theme-dark .brand-logo {
  background: #282C37;
  color: #ECEFF4;
  border: 1px solid #3E4452;
}

body.theme-dark .header-tool-btn.highlight {
  background: #2E3440;
  color: #ECEFF4;
  border-color: #4C566A;
}

body.theme-dark .kakao-send-btn {
  background: #3B4252;
  color: #ECEFF4;
  border: 1px solid #4C566A;
}
body.theme-dark .kakao-send-btn:hover {
  background: #434C5E;
}

body.theme-dark .in-room-search-bar {
  background: #1C1F26;
  border-bottom: 1px solid var(--border-color);
}
body.theme-dark .in-room-search-bar input {
  background: #14161A;
  color: var(--text-primary);
  border-color: var(--border-color);
}

body.theme-dark .room-notice-bar {
  background: #20242C;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.28);
}
body.theme-dark .notice-edit-btn {
  background: #2C313C;
  color: #D1D5DB;
}

body.theme-dark .typing-indicator {
  background: rgba(24, 26, 31, 0.92);
  color: var(--text-primary);
  border-top: 1px solid var(--border-color);
}

body.theme-dark .msg-row.other .msg-content table {
  background: rgba(0, 0, 0, 0.25);
  color: var(--text-primary);
}
body.theme-dark .msg-row.other .msg-content th,
body.theme-dark .msg-row.other .msg-content td {
  border-color: rgba(255, 255, 255, 0.14);
}
body.theme-dark .msg-row.other .msg-content th {
  background: rgba(255, 255, 255, 0.06);
}
body.theme-dark .msg-row.other .msg-content code {
  background: rgba(255, 255, 255, 0.12);
}

body.theme-dark .ag-thinking-details {
  background: rgba(99, 102, 241, 0.14);
  border-color: rgba(99, 102, 241, 0.32);
}
body.theme-dark .ag-thinking-details summary {
  color: #A5B4FC;
}
body.theme-dark .ag-thinking-body {
  color: #D1D5DB;
}
body.theme-dark .ag-tool-badge {
  background: rgba(245, 158, 11, 0.16);
  color: #FCD34D;
  border-color: rgba(245, 158, 11, 0.35);
}

body.theme-dark .att-file-card {
  background: rgba(0, 0, 0, 0.25);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}
body.theme-dark .reaction-chip {
  background: #232730;
  border-color: var(--border-color);
  color: var(--text-primary);
}
body.theme-dark .reaction-chip.active {
  background: rgba(250, 204, 21, 0.2);
  border-color: #FACC15;
  color: #FEF08A;
}
body.theme-dark .msg-hover-tools {
  background: #232730;
  border-color: var(--border-color);
}
body.theme-dark .hover-tool-btn:hover {
  background: #313642;
}

.pwa-guide-card {
  background: #F3F4F6;
  padding: 12px;
  border-radius: 10px;
}
body.theme-dark .pwa-guide-card {
  background: #232730;
  color: var(--text-primary);
}

body.theme-lab {
  --chat-bg: #F4F6F9;
  --chat-header-bg: rgba(255, 255, 255, 0.96);
  --unread-num-color: #D97706;
  --unread-num-shadow: transparent;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Malgun Gothic", "맑은 고딕", "Apple SD Gothic Neo", "Segoe UI", sans-serif;
  color: var(--text-primary);
  background: var(--list-bg);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.hidden {
  display: none !important;
}

/* ==========================================================================
   App Layout (3-Column KakaoTalk PC Layout)
   ========================================================================== */
.app-shell {
  --list-pane-width: 260px;
  --header-bottom-gap: 6px;
  display: grid;
  grid-template-columns: 60px var(--list-pane-width) 10px minmax(0, 1fr);
  width: 100%;
  max-width: 100vw;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

body.list-pane-collapsed .app-shell {
  grid-template-columns: 60px 0px 10px minmax(0, 1fr);
}
body.list-pane-collapsed .list-pane {
  border-right: none;
  opacity: 0;
  pointer-events: none;
}

/* 1. Left Navigation Rail */
.nav-rail {
  background: var(--nav-bg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  user-select: none;
  z-index: 20;
}

.nav-top, .nav-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 15px;
  background: var(--kakao-yellow);
  color: var(--kakao-brown);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 10px;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.28);
}

.nav-btn {
  position: relative;
  width: 54px;
  height: 54px;
  border: none;
  border-radius: 14px;
  background: transparent;
  color: var(--nav-text);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.nav-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #D5D8DF;
}

.nav-btn.active {
  background: rgba(255, 255, 255, 0.14);
  color: var(--nav-active);
}

.nav-icon {
  font-size: 21px;
  line-height: 1;
}

.nav-label {
  font-size: 10px;
  font-weight: 600;
}

.nav-badge {
  position: absolute;
  top: 5px;
  right: 6px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--badge-red);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-util-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  font-size: 17px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.status-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  display: inline-block;
}
.status-dot.online { background: #22C55E; box-shadow: 0 0 8px #22C55E; }
.status-dot.offline { background: #F59E0B; }

/* 2. Middle List Pane */
.list-pane {
  background: var(--list-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  min-width: 0;
  overflow: hidden;
}

/* Horizontal Resizer Handle (Left Room List <-> Right Chat Room) */
.pane-resizer {
  width: 10px;
  height: 100vh;
  height: 100dvh;
  background: var(--list-bg);
  border-right: 1px solid var(--border-color);
  cursor: col-resize;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  touch-action: none;
  z-index: 25;
  transition: background 0.15s;
}
.pane-resizer:hover,
.pane-resizer.dragging {
  background: rgba(254, 229, 0, 0.28);
}
.resizer-grip {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1;
  pointer-events: none;
}

.list-header {
  padding: 14px 12px 10px;
  border-bottom: 1px solid var(--border-color);
}

.list-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.list-title-row h1 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.3px;
}

.list-actions {
  display: flex;
  gap: 6px;
}

.icon-action-btn {
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--list-hover);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}
.icon-action-btn:hover {
  background: var(--kakao-yellow);
  color: var(--kakao-brown);
  border-color: var(--kakao-yellow);
}

.search-box-wrap {
  display: flex;
  align-items: center;
  background: var(--list-hover);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 7px 11px;
  gap: 8px;
}

.search-box-wrap input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
}

.clear-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 13px;
}

.tab-content {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 8px 0 24px;
}
.tab-content.active {
  display: block;
}

/* KakaoTalk Squircle Avatar */
.squircle-avatar {
  width: 44px;
  height: 44px;
  border-radius: 38%;
  background: linear-gradient(135deg, #F3F4F6, #E5E7EB);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  position: relative;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.06);
}
.squircle-avatar.lg {
  width: 48px;
  height: 48px;
  font-size: 25px;
}
.squircle-avatar.sm {
  width: 38px;
  height: 38px;
  font-size: 19px;
}
.squircle-avatar.ai-avatar {
  background: linear-gradient(135deg, #EEF2FF, #E0E7FF);
  box-shadow: inset 0 0 0 1.5px #6366F1;
}

/* Friends List Sections */
.section-group-header {
  padding: 10px 16px 5px;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.friend-item, .room-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  cursor: pointer;
  transition: background 0.12s;
}
.friend-item:hover, .room-item:hover {
  background: var(--list-hover);
}
.room-item.active {
  background: var(--list-active);
}

.friend-info, .room-info {
  flex: 1;
  min-width: 0;
}

.friend-name-row, .room-name-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 3px;
}

.friend-name, .room-name {
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ai-pill {
  font-size: 10px;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 99px;
  background: #EEF2FF;
  color: #4F46E5;
  border: 1px solid #C7D2FE;
}

.friend-status, .room-preview {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.room-meta-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 5px;
  flex-shrink: 0;
}

.room-time {
  font-size: 11px;
  color: var(--text-muted);
}

.room-unread-badge {
  background: var(--badge-red);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 700;
  min-width: 19px;
  height: 19px;
  padding: 0 6px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 3. Right Main Chat Window */
.chat-pane {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  background: var(--chat-bg);
  position: relative;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 14px;
  background: var(--chat-header-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  z-index: 10;
  min-width: 0;
}

.chat-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1 1 180px;
}

.room-meta {
  min-width: 0;
  flex: 1;
}

.mobile-back-btn {
  display: none;
  border: none;
  background: transparent;
  font-size: 18px;
  cursor: pointer;
  flex-shrink: 0;
}

.pane-collapse-btn {
  border: 1px solid var(--border-color);
  background: var(--list-hover);
  color: var(--text-primary);
  width: 28px;
  height: 28px;
  border-radius: 7px;
  font-size: 11px;
  cursor: pointer;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.pane-collapse-btn:hover {
  background: var(--kakao-yellow);
  color: var(--kakao-brown);
}

.room-title-line {
  display: flex;
  align-items: center;
  gap: 7px;
}

.room-title-line h2 {
  font-size: 16px;
  font-weight: 800;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.member-count-pill {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  background: rgba(0, 0, 0, 0.07);
  padding: 1px 7px;
  border-radius: 99px;
}

.pin-btn {
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  opacity: 0.45;
}
.pin-btn.pinned {
  opacity: 1;
}

.room-subtitle {
  font-size: 11.5px;
  color: var(--text-secondary);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 420px;
}

.chat-header-right {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  min-width: 0;
}

.sender-switch-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.65);
  padding: 4px 8px;
  border-radius: 8px;
  font-size: 11.5px;
}
.sender-select {
  border: none;
  background: transparent;
  font-size: 12px;
  font-weight: 700;
  color: #191919;
  cursor: pointer;
  outline: none;
}

.header-tool-btn {
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.72);
  color: #191919;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
}
.header-tool-btn:hover {
  background: #FFFFFF;
}
.header-tool-btn.highlight {
  background: var(--kakao-yellow);
  border-color: #E5CD00;
}

/* In-room Search & Notice Bar */
.in-room-search-bar {
  display: flex;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--border-color);
}
.in-room-search-bar input {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 13px;
}

.room-notice-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 8px 14px 0;
  padding: 9px 14px;
  background: rgba(255, 255, 255, 0.92);
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
  font-size: 12.5px;
  color: #222;
}
.notice-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.notice-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.notice-edit-btn {
  border: none;
  background: #F3F4F6;
  color: #4B5563;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
  cursor: pointer;
  flex-shrink: 0;
}

/* Vertical Resizer Handle (Chat Room Title Header <-> Chat Message Stream) */
.header-resizer {
  height: 12px;
  margin-bottom: var(--header-bottom-gap, 6px);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: row-resize;
  user-select: none;
  touch-action: none;
  flex-shrink: 0;
}
.header-resizer-bar {
  width: 46px;
  height: 4px;
  border-radius: 99px;
  background: rgba(156, 163, 175, 0.35);
  transition: background 0.15s, width 0.15s;
}
.header-resizer:hover .header-resizer-bar,
.header-resizer.dragging .header-resizer-bar {
  width: 68px;
  background: var(--kakao-yellow);
}

/* ==========================================================================
   Message Stream & KakaoTalk Speech Bubbles
   ========================================================================== */
.message-stream {
  flex: 1;
  min-width: 0;
  width: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.date-divider {
  align-self: center;
  background: rgba(0, 0, 0, 0.16);
  color: #FFFFFF;
  font-size: 11.5px;
  padding: 4px 14px;
  border-radius: 999px;
  margin: 6px 0;
}

.msg-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  max-width: 84%;
  position: relative;
}

.msg-row.mine {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.msg-row.other {
  align-self: flex-start;
}

.msg-body-col {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.msg-row.mine .msg-body-col {
  align-items: flex-end;
}

.msg-sender-line {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 4px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-primary);
}

.msg-bubble-line {
  display: flex;
  align-items: flex-end;
  gap: 6px;
}
.msg-row.mine .msg-bubble-line {
  flex-direction: row-reverse;
}

.msg-bubble {
  position: relative;
  padding: 10px 13px;
  border-radius: 14px;
  font-size: 13.8px;
  line-height: 1.54;
  word-break: break-word;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
  max-width: 660px;
}

.msg-row.mine .msg-bubble {
  background: var(--my-bubble-bg);
  color: var(--my-bubble-text);
  border-top-right-radius: 3px;
}

.msg-row.other .msg-bubble {
  background: var(--other-bubble-bg);
  color: var(--other-bubble-text);
  border-top-left-radius: 3px;
}

/* Reply Quote Inside Bubble */
.bubble-reply-quote {
  padding: 6px 9px;
  margin-bottom: 7px;
  border-left: 3px solid #6366F1;
  background: rgba(0, 0, 0, 0.05);
  border-radius: 6px;
  font-size: 11.5px;
}
.bubble-reply-quote strong {
  display: block;
  margin-bottom: 2px;
}

/* KakaoTalk Signature Yellow '1' Unread Count & Timestamp */
.msg-meta-side {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  font-size: 10.5px;
  line-height: 1.25;
  flex-shrink: 0;
  user-select: none;
}
.msg-row.mine .msg-meta-side {
  align-items: flex-end;
}
.msg-row.other .msg-meta-side {
  align-items: flex-start;
}

.kakao-unread-one {
  color: var(--unread-num-color);
  font-weight: 800;
  font-size: 11.5px;
  text-shadow: 0 1px 1px var(--unread-num-shadow);
}

.kakao-msg-time {
  color: rgba(25, 25, 25, 0.62);
}
body.theme-dark .kakao-msg-time {
  color: #9BA1AA;
}

/* Markdown & Academic Math Formatting Inside Bubbles */
.msg-content p {
  margin-bottom: 6px;
}
.msg-content p:last-child {
  margin-bottom: 0;
}
.msg-content ul, .msg-content ol {
  padding-left: 18px;
  margin: 5px 0;
}
.msg-content h3, .msg-content h4 {
  margin: 4px 0 6px;
  font-size: 14.5px;
}
.msg-content table {
  border-collapse: collapse;
  width: 100%;
  margin: 8px 0;
  font-size: 12.5px;
  background: rgba(255, 255, 255, 0.65);
  border-radius: 6px;
  overflow: hidden;
}
.msg-content th, .msg-content td {
  border: 1px solid rgba(0, 0, 0, 0.12);
  padding: 5px 8px;
  text-align: left;
}
.msg-content th {
  background: rgba(0, 0, 0, 0.06);
  font-weight: 700;
}
.msg-content pre {
  background: #1E1E2E;
  color: #F8F8F2;
  padding: 10px 12px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 12px;
  margin: 7px 0;
}
.msg-content code {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 12px;
  background: rgba(0, 0, 0, 0.08);
  padding: 1px 5px;
  border-radius: 4px;
}
.msg-content pre code {
  background: transparent;
  padding: 0;
}
.msg-content blockquote {
  border-left: 3px solid rgba(0, 0, 0, 0.25);
  padding-left: 9px;
  color: inherit;
  opacity: 0.88;
  margin: 5px 0;
}

/* Antigravity Thinking & Tool Execution Chips Inside Speech Bubbles */
.ag-thinking-details {
  margin-bottom: 8px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.22);
  border-radius: 8px;
  padding: 5px 9px;
  font-size: 11.5px;
}
.ag-thinking-details summary {
  cursor: pointer;
  font-weight: 700;
  color: #4338CA;
  user-select: none;
}
.ag-thinking-body {
  margin-top: 5px;
  color: #4B5563;
  white-space: pre-wrap;
  max-height: 180px;
  overflow-y: auto;
  font-size: 11px;
}
.ag-tools-list {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 8px;
}
.ag-tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #FEF3C7;
  color: #92400E;
  border: 1px solid #FDE68A;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
}

/* Attachments inside Bubble */
.bubble-attachments {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
}
.att-image-preview {
  max-width: 280px;
  max-height: 240px;
  border-radius: 10px;
  object-fit: cover;
  cursor: pointer;
  border: 1px solid rgba(0,0,0,0.08);
}
.att-file-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 11px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 9px;
  text-decoration: none;
  color: #191919;
  font-size: 12.5px;
}
.att-file-card:hover {
  background: #FFFFFF;
}
.att-permanence-tag {
  font-size: 10px;
  color: #059669;
  font-weight: 700;
}

/* Message Reactions & Hover Action Toolbar */
.msg-reactions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 4px;
}
.reaction-chip {
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.88);
  border-radius: 99px;
  padding: 2px 7px;
  font-size: 11.5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 3px;
}
.reaction-chip.active {
  background: #FEF9C3;
  border-color: #FACC15;
  font-weight: 700;
}

.msg-hover-tools {
  display: none;
  align-items: center;
  gap: 3px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 99px;
  padding: 2px 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  margin-top: 4px;
}
.msg-row:hover .msg-hover-tools {
  display: inline-flex;
}
.hover-tool-btn {
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  padding: 2px 4px;
  border-radius: 4px;
}
.hover-tool-btn:hover {
  background: #F3F4F6;
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  font-size: 12px;
  font-weight: 600;
  color: #1F2937;
  background: rgba(255, 255, 255, 0.75);
}
.typing-dots span {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 3px;
  border-radius: 50%;
  background: #4F46E5;
  animation: bounce 1.2s infinite ease-in-out;
}
.typing-dots span:nth-child(2) { animation-delay: 0.15s; }
.typing-dots span:nth-child(3) { animation-delay: 0.3s; }
@keyframes bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
  40% { transform: scale(1.1); opacity: 1; }
}

/* ==========================================================================
   Bottom Chat Composer
   ========================================================================== */
.chat-composer {
  background: var(--list-bg);
  border-top: 1px solid var(--border-color);
  padding: 8px 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.reply-preview-bar, .pending-attachments-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--list-hover);
  border-left: 3px solid var(--kakao-yellow);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
}
.reply-preview-info p {
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 520px;
}

.quick-mention-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 2px;
}
.quick-chip {
  border: 1px solid var(--border-color);
  background: var(--list-hover);
  color: var(--text-primary);
  font-size: 11.5px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.12s;
}
.quick-chip:hover {
  background: var(--kakao-yellow);
  color: var(--kakao-brown);
  border-color: var(--kakao-yellow);
}
.quick-chip.ai-chip {
  background: #EEF2FF;
  color: #4338CA;
  border-color: #C7D2FE;
}
.quick-chip.ea-chip {
  background: #ECFDF5;
  color: #047857;
  border-color: #A7F3D0;
}

.composer-main-row {
  display: flex;
  align-items: flex-end;
  gap: 10px;
}

.composer-tools {
  display: flex;
  align-items: center;
  gap: 4px;
}

.tool-icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--list-hover);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}
.tool-icon-btn:hover {
  background: var(--border-color);
}

#chat-input {
  flex: 1;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 9px 12px;
  font-family: inherit;
  font-size: 13.8px;
  line-height: 1.45;
  resize: none;
  background: var(--list-bg);
  color: var(--text-primary);
  outline: none;
}
#chat-input:focus {
  border-color: #B4B9C2;
}

.kakao-send-btn {
  height: 44px;
  padding: 0 18px;
  border: none;
  border-radius: 10px;
  background: var(--kakao-yellow);
  color: var(--kakao-brown);
  font-size: 13.5px;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.15s;
}
.kakao-send-btn:hover {
  background: var(--kakao-yellow-hover);
}

/* ==========================================================================
   AI Hub & Drawer Cards in Middle Pane
   ========================================================================== */
.hub-card {
  margin: 10px 14px;
  padding: 13px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--list-hover);
}
.hub-card h3 {
  font-size: 13.5px;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.hub-card p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 8px;
}
.code-snippet-box {
  background: #1E1E2E;
  color: #E2E8F0;
  padding: 9px 10px;
  border-radius: 8px;
  font-family: Consolas, monospace;
  font-size: 11px;
  overflow-x: auto;
  white-space: pre;
  margin-bottom: 8px;
}

.drawer-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-color);
  font-size: 12.5px;
}
.drawer-item-meta {
  min-width: 0;
  flex: 1;
}
.drawer-item-title {
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.drawer-item-sub {
  font-size: 11px;
  color: var(--text-secondary);
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.48);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal-card {
  width: 92%;
  max-width: 440px;
  background: var(--list-bg);
  border-radius: 16px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
  overflow: hidden;
}
.modal-card.wide {
  max-width: 620px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 18px;
  border-bottom: 1px solid var(--border-color);
}
.modal-header h3 {
  font-size: 15.5px;
}
.modal-close {
  border: none;
  background: transparent;
  font-size: 16px;
  cursor: pointer;
  color: var(--text-secondary);
}

.modal-body {
  padding: 16px 18px;
  max-height: 68vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.field-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
}
.field-input {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 13px;
  background: var(--list-bg);
  color: var(--text-primary);
}

.checkbox-member-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 240px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 8px;
}
.checkbox-member-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 6px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}
.checkbox-member-row:hover {
  background: var(--list-hover);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 18px;
  border-top: 1px solid var(--border-color);
}

.btn-kakao-primary {
  padding: 8px 16px;
  border: none;
  border-radius: 8px;
  background: var(--kakao-yellow);
  color: var(--kakao-brown);
  font-weight: 800;
  font-size: 13px;
  cursor: pointer;
}
.btn-secondary {
  padding: 8px 14px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--list-hover);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
}

.vault-search-row {
  display: flex;
  gap: 8px;
}
.vault-results-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 6px;
}
.vault-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 12.5px;
}

/* Responsive Mobile View */
@media (max-width: 720px) {
  .app-shell {
    grid-template-columns: 54px minmax(0, 1fr);
  }
  .pane-resizer,
  .pane-collapse-btn {
    display: none !important;
  }
  .chat-pane {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100dvh;
    z-index: 40;
    transform: translateX(100%);
    transition: transform 0.2s ease;
  }
  body.mobile-chat-open .chat-pane {
    transform: translateX(0);
  }
  .mobile-back-btn {
    display: inline-block;
  }
}