/* TalkMate — Design-reference CSS
   Tokens source: design/_build/lib.py (T dict)
   Layout source: design/_build/ui.py (DEV dict) + SVG rects
   -------------------------------------------------------
   PC 1920:  sidebar=240  chatlist=380  info=380  chat=920
   Notebook: rail=72      chatlist=320  info=0
   iPad:     rail=72      chatlist=280  (slide-out)
   Mobile:   360px single-panel + bottom-tabs
   iPhone:   390px single-panel + safe-area
*/

/* ── Design tokens ──────────────────────────────────────────────── */
:root {
  /* Primary */
  --c-primary:    #5B5BD6;
  --c-primary-d:  #4747B8;
  --c-primary-l:  #EEEEFD;
  --c-primary-m:  #D9D9F7;
  /* Semantic */
  --c-accent:     #FF7A59;
  --c-accent-l:   #FFEDE7;
  --c-ok:         #2FB67C;
  --c-ok-l:       #E6F7EF;
  --c-ok-d:       #1C8A5C;
  --c-warn:       #F5A524;
  --c-warn-l:     #FFF4DD;
  --c-warn-d:     #8A5600;
  --c-err:        #E5484D;
  --c-err-l:      #FDECEC;
  --c-err-d:      #B42327;
  /* Neutral */
  --c-bg:         #F6F6FB;
  --c-surface:    #FFFFFF;
  --c-border:     #E4E4EE;
  --c-border-s:   #CFCFE0;
  --c-text:       #1B1B2F;
  --c-text2:      #4A4A66;
  --c-muted:      #767692;
  --c-ink:        #2B2B44;
  /* Lang badge colors */
  --c-en-bg: #EEEEFD; --c-en-fg: #4747B8;
  --c-ja-bg: #FDECEC; --c-ja-fg: #B42327;
  --c-zh-bg: #FFF4DD; --c-zh-fg: #8A5600;
  --c-ko-bg: #E6F7EF; --c-ko-fg: #1C8A5C;
  --c-th-bg: #E8F2FF; --c-th-fg: #1F5FA8;

  /* Layout */
  --w-sidebar:    240px;
  --w-rail:       72px;
  --w-chatlist:   380px;
  --w-chatlist-nb:320px;
  --w-chatlist-ip:280px;
  --w-info:       380px;

  /* Spacing */
  --pad-lg: 24px;
  --pad-md: 20px;
  --pad-sm: 16px;

  /* Border radius (from SVG rx values) */
  --r-xs:  6px;
  --r-sm:  8px;
  --r-md:  12px;
  --r-lg:  16px;
  --r-xl:  20px;
  --r-2xl: 24px;

  /* Shadow (from lib.py filter sh: dx=0 dy=2 stdDev=5 opacity=.08) */
  --shadow-sm: 0 2px 10px rgba(27,27,47,.08);
  --shadow-md: 0 4px 16px rgba(27,27,47,.12);
  --shadow-lg: 0 12px 40px rgba(27,27,47,.18);
}

/* ── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  height: 100%;
  font-family: 'Noto Sans Thai','Sarabun','Leelawadee UI','Tahoma',
               'Yu Gothic UI','Meiryo','Microsoft YaHei UI','Malgun Gothic',
               'Noto Sans JP','Noto Sans SC','Segoe UI',system-ui,sans-serif;
  font-size: 15px;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }
img { display: block; max-width: 100%; }

/* ══════════════════════════════════════════════════════════════════
   LOGIN SCREEN
   Left 50% = hero (primary gradient)
   Right 50% = white form
══════════════════════════════════════════════════════════════════ */
#login-screen {
  display: none;
  min-height: 100vh;
  background: var(--c-bg);
}
.login-wrap {
  display: flex;
  min-height: 100vh;
}

/* Left hero */
.login-hero {
  flex: 1;
  background: linear-gradient(145deg, var(--c-primary) 0%, var(--c-primary-d) 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px 64px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.login-hero::before {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  top: -80px; right: -80px;
}
.login-hero::after {
  content: '';
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
  bottom: -60px; left: -60px;
}
.login-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 56px;
}
.login-logo-icon {
  width: 56px; height: 56px;
  background: rgba(255,255,255,.2);
  border-radius: var(--r-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
}
.login-logo-name {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -.3px;
}
.login-tagline {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  opacity: .95;
}
.login-sub {
  font-size: 16px;
  opacity: .75;
  line-height: 1.6;
  max-width: 380px;
}
.login-demo-bubble {
  margin-top: 52px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 400px;
  position: relative;
  z-index: 1;
}
.login-bubble {
  padding: 12px 18px;
  border-radius: var(--r-lg);
  font-size: 14px;
  line-height: 1.5;
  max-width: 320px;
}
.login-bubble--char {
  background: rgba(255,255,255,.18);
  color: #fff;
  align-self: flex-start;
}
.login-bubble--user {
  background: rgba(255,255,255,.95);
  color: var(--c-primary-d);
  align-self: flex-end;
  font-weight: 500;
}

/* Right form */
.login-form-side {
  width: 560px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-surface);
  padding: 60px 64px;
}
.login-form-box {
  width: 100%;
  max-width: 400px;
}
.login-form-box h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 6px;
}
.login-form-box p {
  font-size: 14px;
  color: var(--c-muted);
  margin-bottom: 32px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--c-text2);
  margin-bottom: 8px;
}
.form-group input {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1.5px solid var(--c-border-s);
  border-radius: var(--r-md);
  background: var(--c-surface);
  font-size: 15px;
  color: var(--c-text);
  outline: none;
  transition: border-color .15s;
}
.form-group input:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px var(--c-primary-l);
}
.form-group input::placeholder { color: var(--c-muted); }

.login-error {
  font-size: 13px;
  color: var(--c-err);
  background: var(--c-err-l);
  border-radius: var(--r-sm);
  padding: 8px 12px;
  margin-bottom: 16px;
  display: none;
}
.login-error.visible { display: block; }

.btn-login {
  width: 100%;
  height: 50px;
  background: var(--c-primary);
  color: #fff;
  border-radius: var(--r-md);
  font-size: 16px;
  font-weight: 600;
  transition: background .15s, transform .1s;
  margin-top: 8px;
}
.btn-login:hover  { background: var(--c-primary-d); }
.btn-login:active { transform: scale(.99); }

.login-note {
  text-align: center;
  font-size: 12.5px;
  color: var(--c-muted);
  margin-top: 20px;
}

/* ══════════════════════════════════════════════════════════════════
   MAIN LAYOUT (authenticated)
══════════════════════════════════════════════════════════════════ */
#main-layout {
  display: none;
  height: 100vh;
  overflow: hidden;
}
.app-shell {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── Sidebar (PC 240px) ──────────────────────────────────────────── */
.sidebar {
  width: var(--w-sidebar);
  flex-shrink: 0;
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.sidebar__head {
  padding: 20px 16px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--c-border);
}
.sidebar__logo-icon {
  width: 36px; height: 36px;
  background: var(--c-primary);
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: #fff;
  flex-shrink: 0;
}
.sidebar__logo-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-text);
}

/* Quota bar */
.sidebar__quota {
  padding: 12px 16px;
  border-bottom: 1px solid var(--c-border);
}
.sidebar__quota-label {
  font-size: 11px;
  color: var(--c-muted);
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
}
.sidebar__quota-track {
  height: 8px;
  background: var(--c-border);
  border-radius: 4px;
  overflow: hidden;
}
.sidebar__quota-fill {
  height: 100%;
  background: var(--c-primary);
  border-radius: 4px;
  transition: width .3s;
}
.sidebar__quota-num {
  font-size: 12px;
  color: var(--c-text2);
  margin-top: 4px;
}

/* User info */
.sidebar__user {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--c-border);
}
.sidebar__user-avatar {
  width: 36px; height: 36px;
  background: var(--c-primary-l);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.sidebar__user-name  { font-size: 14px; font-weight: 600; color: var(--c-text); }
.sidebar__user-level { font-size: 12px; color: var(--c-muted); }

/* Nav */
.sidebar__nav {
  flex: 1;
  padding: 8px;
  overflow-y: auto;
}
.sidebar__nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--r-md);
  cursor: pointer;
  color: var(--c-text2);
  font-size: 14px;
  font-weight: 500;
  transition: background .12s, color .12s;
  position: relative;
}
.sidebar__nav-item:hover { background: var(--c-bg); color: var(--c-text); }
.sidebar__nav-item.active {
  background: var(--c-primary-l);
  color: var(--c-primary-d);
  font-weight: 600;
}
.sidebar__nav-icon { font-size: 18px; width: 22px; text-align: center; flex-shrink: 0; }
.sidebar__nav-badge {
  margin-left: auto;
  min-width: 20px; height: 20px;
  background: var(--c-accent);
  color: #fff;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  padding: 0 5px;
}

.sidebar__bottom {
  padding: 8px;
  border-top: 1px solid var(--c-border);
}

/* ── Chat list panel (380px) ─────────────────────────────────────── */
.chatlist-panel {
  width: var(--w-chatlist);
  flex-shrink: 0;
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.chatlist-panel__header {
  padding: 16px var(--pad-lg);
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--c-border);
  flex-shrink: 0;
}
.chatlist-panel__title {
  font-size: 16px;
  font-weight: 700;
  flex: 1;
}
.chatlist-panel__body {
  flex: 1;
  overflow-y: auto;
}

/* Search box */
.search-box {
  margin: 12px 16px;
  position: relative;
}
.search-box input {
  width: 100%;
  height: 36px;
  padding: 0 12px 0 34px;
  border: 1.5px solid var(--c-border);
  border-radius: 18px;
  background: var(--c-bg);
  font-size: 13px;
  color: var(--c-text);
  outline: none;
}
.search-box input:focus { border-color: var(--c-primary); background: var(--c-surface); }
.search-box::before {
  content: '🔍';
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  pointer-events: none;
}

/* Filter chips */
.filter-chips {
  display: flex;
  gap: 6px;
  padding: 0 16px 10px;
  overflow-x: auto;
  flex-shrink: 0;
}
.chip {
  padding: 4px 14px;
  border-radius: 14px;
  font-size: 13px;
  font-weight: 500;
  border: 1.5px solid var(--c-border-s);
  background: var(--c-surface);
  color: var(--c-text2);
  white-space: nowrap;
  cursor: pointer;
  transition: all .12s;
}
.chip.active {
  background: var(--c-primary-l);
  border-color: var(--c-primary);
  color: var(--c-primary-d);
  font-weight: 600;
}

/* Conv items */
.conv-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--c-border);
  transition: background .1s;
}
.conv-item:hover { background: var(--c-bg); }
.conv-item.active { background: var(--c-primary-l); }

.conv-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  background: var(--c-primary-l);
  color: var(--c-primary-d);
  font-weight: 700;
}
.conv-avatar--group {
  background: var(--c-primary-l);
  font-size: 22px;
}
.conv-info { flex: 1; min-width: 0; }
.conv-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.conv-preview {
  font-size: 13px;
  color: var(--c-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}
.conv-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  flex-shrink: 0;
}
.conv-time { font-size: 11px; color: var(--c-muted); }
.unread-badge {
  min-width: 20px; height: 20px;
  background: var(--c-accent);
  color: #fff;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  padding: 0 5px;
}

/* Push banner */
.push-banner {
  margin: 10px 16px;
  padding: 10px 14px;
  background: var(--c-primary-l);
  border: 1.5px solid var(--c-primary-m);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--c-primary-d);
}
.push-banner button {
  margin-left: auto;
  padding: 5px 12px;
  background: var(--c-primary);
  color: #fff;
  border-radius: var(--r-sm);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

/* ── Chat area ───────────────────────────────────────────────────── */
.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}
.chat-header {
  height: 64px;
  padding: 0 var(--pad-lg);
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--c-surface);
  flex-shrink: 0;
}
.chat-header__back {
  display: none;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--c-text2);
}
.chat-header__avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--c-primary-l);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.chat-header__info { flex: 1; min-width: 0; }
.chat-header__name { font-size: 15px; font-weight: 700; }
.chat-header__sub  { font-size: 12px; color: var(--c-muted); }
.chat-header__tools { display: flex; gap: 4px; }

/* Toolbar (mode selector) */
.chat-toolbar {
  padding: 8px var(--pad-lg);
  border-bottom: 1px solid var(--c-border);
  background: var(--c-surface);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.toolbar-chip {
  padding: 4px 12px;
  border: 1.5px solid var(--c-border-s);
  border-radius: 14px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--c-text2);
  cursor: pointer;
  transition: all .12s;
}
.toolbar-chip.active {
  background: var(--c-primary-l);
  border-color: var(--c-primary);
  color: var(--c-primary-d);
  font-weight: 600;
}

/* Discussion waiting bar */
#discussion-bar {
  display: none;
  padding: 8px var(--pad-lg);
  background: var(--c-primary-l);
  border-bottom: 1px solid var(--c-primary-m);
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--c-primary-d);
  flex-shrink: 0;
}
#discussion-bar button {
  padding: 5px 12px;
  border-radius: var(--r-sm);
  font-size: 12px;
  font-weight: 600;
}

/* Messages */
#messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--pad-lg);
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--c-bg);
}

/* Input area */
.input-area {
  border-top: 1px solid var(--c-border);
  padding: 12px var(--pad-lg);
  background: var(--c-surface);
  flex-shrink: 0;
}
#reply-bar {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--c-primary-l);
  border-left: 3px solid var(--c-primary);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  margin-bottom: 8px;
  font-size: 13px;
  color: var(--c-primary-d);
}
#attach-tray {
  display: none;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}
.tray-item {
  display: flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  background: var(--c-bg);
  border: 1px solid var(--c-border-s);
  border-radius: var(--r-sm);
  font-size: 12px;
  color: var(--c-text2);
}
.tray-item button {
  color: var(--c-muted);
  font-size: 12px;
  line-height: 1;
}
.input-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}
#input {
  flex: 1;
  resize: none;
  padding: 11px 14px;
  border: 1.5px solid var(--c-border-s);
  border-radius: var(--r-lg);
  background: var(--c-bg);
  font-size: 15px;
  color: var(--c-text);
  outline: none;
  min-height: 46px;
  max-height: 120px;
  overflow-y: auto;
  line-height: 1.5;
  transition: border-color .15s, background .15s;
}
#input:focus {
  border-color: var(--c-primary);
  background: var(--c-surface);
}
#input::placeholder { color: var(--c-muted); }

/* ── Message bubbles ────────────────────────────────────────────── */
.msg { display: flex; gap: 10px; max-width: 680px; animation: msgIn .2s ease; }
@keyframes msgIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; } }

.msg--user { align-self: flex-end; flex-direction: row-reverse; max-width: 600px; }
.msg--char { align-self: flex-start; }
.msg--system { align-self: center; max-width: 100%; }

.msg__avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  background: var(--c-primary-l);
}
.msg__body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.msg__header {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  margin-bottom: 2px;
}
.msg__name  { font-size: 13px; font-weight: 600; color: var(--c-text2); }
.msg__role  {
  font-size: 11px;
  background: var(--c-bg);
  color: var(--c-muted);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--c-border);
}
.msg__time  { font-size: 11px; color: var(--c-muted); margin-left: auto; }
.msg__emo   { font-size: 16px; }

.msg__content {
  padding: 10px 14px;
  border-radius: var(--r-lg);
  line-height: 1.65;
  word-break: break-word;
  white-space: pre-wrap;
  font-size: 15px;
}
/* User bubble: primary-light bg, rounded top-right is 4px (from SVG bubble) */
.msg--user .msg__content {
  background: var(--c-primary-l);
  color: var(--c-ink);
  border-radius: var(--r-lg) 4px var(--r-lg) var(--r-lg);
}
/* Char bubble: white surface with border */
.msg--char .msg__content {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 4px var(--r-lg) var(--r-lg) var(--r-lg);
  box-shadow: var(--shadow-sm);
}
.msg--system .msg__system-text {
  font-size: 12px;
  color: var(--c-muted);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  padding: 4px 14px;
  border-radius: 12px;
}

/* Correction & Praise boxes */
.correction {
  background: var(--c-err-l);
  border: 1px solid #FBC4C4;
  border-radius: var(--r-md);
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.65;
  margin-top: 4px;
}
.correction__original { color: var(--c-err);   margin-bottom: 4px; }
.correction__fixed    { color: var(--c-ok-d);  font-weight: 600; margin-bottom: 6px; }
.correction__explanation { color: var(--c-text); }

.praise {
  background: var(--c-warn-l);
  border: 1px solid var(--c-warn-b);
  border-radius: var(--r-md);
  padding: 8px 12px;
  font-size: 13px;
  color: var(--c-warn-d);
  margin-top: 4px;
}

/* Reply quote */
.reply-quote {
  background: var(--c-bg);
  border-left: 3px solid var(--c-primary);
  padding: 5px 10px;
  border-radius: 0 var(--r-xs) var(--r-xs) 0;
  font-size: 12.5px;
  cursor: pointer;
  margin-bottom: 4px;
  overflow: hidden;
  max-width: 280px;
}
.reply-quote__who  { font-weight: 600; color: var(--c-primary-d); margin-right: 4px; }
.reply-quote__text { color: var(--c-text2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Forwarded badge */
.forwarded-badge {
  font-size: 11.5px;
  color: var(--c-muted);
  margin-bottom: 3px;
  padding: 2px 0;
}

/* Reading & Translation */
.msg__reading     { font-size: 12px; color: var(--c-muted); margin-top: 3px; }
.msg__translation { font-size: 13px; color: var(--c-text2); font-style: italic; margin-top: 2px; }

/* Typing indicator */
.typing-dots { display: flex; gap: 5px; padding: 10px 14px; }
.typing-dots span {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-muted);
  animation: blink 1.2s infinite;
}
.typing-dots span:nth-child(2) { animation-delay: .2s; }
.typing-dots span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%,100%{opacity:.25;} 50%{opacity:1;} }

/* Highlight on scroll-to */
.highlight { outline: 2px solid var(--c-primary); border-radius: var(--r-md); }

/* Message hover menu */
.msg__body { position: relative; }
.msg-menu {
  position: absolute;
  top: -36px; right: 0;
  display: flex; gap: 2px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  box-shadow: var(--shadow-md);
  padding: 3px;
  z-index: 10;
}
.msg-menu button {
  padding: 4px 8px;
  font-size: 12px;
  border-radius: 4px;
  color: var(--c-text2);
}
.msg-menu button:hover { background: var(--c-bg); color: var(--c-text); }
.msg-menu button.danger:hover { background: var(--c-err-l); color: var(--c-err-d); }

/* ── Attachments ─────────────────────────────────────────────────── */
.attach-grid {
  display: grid; gap: 3px;
  border-radius: var(--r-md);
  overflow: hidden;
  max-width: 280px;
  margin-top: 6px;
}
.attach-grid--1 { grid-template-columns: 1fr; }
.attach-grid--2 { grid-template-columns: 1fr 1fr; }
.attach-grid--3,
.attach-grid--4 { grid-template-columns: 1fr 1fr; }

.attach-grid__item {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  cursor: pointer;
  background: var(--c-bg);
}
.attach-grid__item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .2s;
}
.attach-grid__item:hover img { transform: scale(1.03); }
.attach-grid__more {
  position: absolute; inset: 0;
  background: rgba(27,27,47,.5);
  color: #fff;
  font-size: 20px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.attach-file {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  font-size: 13px;
  margin-top: 4px;
  text-decoration: none;
  color: var(--c-text);
}
.attach-file:hover { background: var(--c-primary-l); border-color: var(--c-primary); }
.attach-file__size { color: var(--c-muted); font-size: 11px; margin-left: auto; }

/* ── Info panel (PC 380px right) ─────────────────────────────────── */
.info-panel {
  width: var(--w-info);
  flex-shrink: 0;
  border-left: 1px solid var(--c-border);
  background: var(--c-surface);
  overflow-y: auto;
  display: none; /* shown on PC only */
}
.info-panel__header {
  padding: 16px var(--pad-lg);
  border-bottom: 1px solid var(--c-border);
  font-size: 15px;
  font-weight: 700;
}
.info-panel__section {
  padding: var(--pad-md) var(--pad-lg);
  border-bottom: 1px solid var(--c-border);
}
.info-panel__section h4 {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 10px;
}

/* ── Characters grid ─────────────────────────────────────────────── */
.chars-panel {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.chars-panel__header {
  padding: 16px var(--pad-lg);
  border-bottom: 1px solid var(--c-border);
  background: var(--c-surface);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}
.chars-lang-filters {
  display: flex;
  gap: 6px;
  padding: 10px var(--pad-lg) 6px;
  overflow-x: auto;
  flex-shrink: 0;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}
#characters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  padding: var(--pad-lg);
  overflow-y: auto;
  flex: 1;
}
.char-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, transform .15s;
}
.char-card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.char-card__top { display: flex; align-items: center; gap: 12px; }
.char-card__avatar {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  flex-shrink: 0;
}
.char-card__name { font-size: 15px; font-weight: 700; }
.char-card__role { font-size: 12.5px; color: var(--c-text2); margin-top: 2px; }
.char-card__tags { display: flex; gap: 6px; flex-wrap: wrap; }
.char-card__actions { display: flex; gap: 8px; }
.char-card__proactive { font-size: 12.5px; color: var(--c-muted); }
.char-card__proactive label { display: flex; align-items: center; gap: 6px; cursor: pointer; }

/* ── Lang badge ─────────────────────────────────────────────────── */
.lang-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
  background: var(--c-en-bg);
  color: var(--c-en-fg);
}
.lang-badge[data-lang="ja"] { background: var(--c-ja-bg); color: var(--c-ja-fg); }
.lang-badge[data-lang="zh"] { background: var(--c-zh-bg); color: var(--c-zh-fg); }
.lang-badge[data-lang="ko"] { background: var(--c-ko-bg); color: var(--c-ko-fg); }
.lang-badge[data-lang="th"] { background: var(--c-th-bg); color: var(--c-th-fg); }

/* ── Buttons ─────────────────────────────────────────────────────── */
.btn-primary {
  padding: 9px 20px;
  background: var(--c-primary);
  color: #fff;
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 600;
  transition: background .15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary:hover { background: var(--c-primary-d); }

.btn-ghost {
  padding: 8px 16px;
  border: 1.5px solid var(--c-border-s);
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text2);
  transition: border-color .15s, color .15s;
}
.btn-ghost:hover { border-color: var(--c-primary); color: var(--c-primary); }

.btn-soft {
  padding: 8px 16px;
  background: var(--c-primary-l);
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 600;
  color: var(--c-primary-d);
  transition: background .15s;
}
.btn-soft:hover { background: var(--c-primary-m); }

.btn-danger {
  padding: 8px 16px;
  background: var(--c-err-l);
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 600;
  color: var(--c-err-d);
}

.icon-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--c-text2);
  font-size: 16px;
  transition: background .12s, color .12s;
}
.icon-btn:hover { background: var(--c-bg); color: var(--c-text); }

/* ── Settings ────────────────────────────────────────────────────── */
.settings-panel {
  flex: 1;
  overflow-y: auto;
  background: var(--c-bg);
}
.settings-inner {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--pad-lg);
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.settings-card {
  background: var(--c-surface);
  border-radius: var(--r-xl);
  border: 1px solid var(--c-border);
  overflow: hidden;
}
.settings-card__header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--c-border);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-text);
}
.settings-card__body { padding: 16px 20px; }
.settings-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--c-border);
}
.settings-row:last-child { border-bottom: none; }
.settings-row__label { flex: 1; }
.settings-row__label strong { display: block; font-size: 14px; font-weight: 600; }
.settings-row__label span  { font-size: 12.5px; color: var(--c-muted); }

/* Models table */
.models-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.models-table th, .models-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--c-border);
  text-align: left;
}
.models-table th { font-size: 11.5px; font-weight: 600; color: var(--c-muted); text-transform: uppercase; }
.status-badge {
  display: inline-flex;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
}
.status-badge--active    { background: var(--c-ok-l);    color: var(--c-ok-d); }
.status-badge--probation { background: var(--c-warn-l);  color: var(--c-warn-d); }
.status-badge--cooldown  { background: #FFF0F6;          color: #C2255C; }
.status-badge--banned    { background: var(--c-err-l);   color: var(--c-err-d); }
.status-badge--gone      { background: var(--c-bg);      color: var(--c-muted); }

/* Quota progress bar */
.quota-bar {
  background: var(--c-bg);
  border-radius: var(--r-md);
  padding: 12px 16px;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--c-text2);
}
.quota-track {
  height: 8px;
  background: var(--c-border);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 8px;
}
.quota-fill {
  height: 100%;
  background: var(--c-primary);
  border-radius: 4px;
}

/* ── Modals ──────────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(27,27,47,.4);
  z-index: 50;
  align-items: center; justify-content: center;
  padding: 20px;
}
.modal-box {
  background: var(--c-surface);
  border-radius: var(--r-2xl);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  width: 480px;
  max-width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-box h2 { font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }

/* Form rows */
.form-row { margin-bottom: 14px; }
.form-row label {
  display: block;
  font-size: 12.5px; font-weight: 600;
  color: var(--c-text2);
  margin-bottom: 6px;
}
.form-row input, .form-row textarea, .form-row select {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--c-border-s);
  border-radius: var(--r-md);
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px var(--c-primary-l);
}

/* ── Image viewer ────────────────────────────────────────────────── */
#image-viewer {
  display: none;
  position: fixed; inset: 0;
  background: rgba(27,27,47,.92);
  z-index: 100;
  flex-direction: column;
  align-items: center; justify-content: center;
  gap: 16px;
}
#viewer-img {
  max-width: 88vw; max-height: 76vh;
  object-fit: contain;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
}
.viewer-controls { display: flex; gap: 10px; align-items: center; }
.viewer-controls button {
  padding: 8px 16px;
  background: rgba(255,255,255,.15);
  color: #fff;
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 500;
  transition: background .12s;
}
.viewer-controls button:hover { background: rgba(255,255,255,.28); }
#viewer-counter { font-size: 14px; color: rgba(255,255,255,.6); }

/* ── Toast ───────────────────────────────────────────────────────── */
#toasts {
  position: fixed; bottom: 20px; right: 20px;
  z-index: 200;
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: none;
}
.toast {
  padding: 10px 16px;
  border-radius: var(--r-md);
  color: #fff;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  animation: slideIn .2s ease;
  pointer-events: auto;
}
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { opacity: 1; } }
.toast--info    { background: #4C7CF5; }
.toast--success { background: var(--c-ok); }
.toast--error   { background: var(--c-err); }
.toast--warn    { background: var(--c-warn); color: var(--c-warn-d); }

/* ── Loading ─────────────────────────────────────────────────────── */
#loading {
  display: none;
  position: fixed; inset: 0;
  background: rgba(246,246,251,.75);
  z-index: 300;
  align-items: center; justify-content: center;
}
.spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--c-border);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Empty state ─────────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 60px var(--pad-lg);
  color: var(--c-muted);
  text-align: center;
}
.empty-state-icon { font-size: 48px; }
.empty-state p { font-size: 15px; }

/* ── Drag over ───────────────────────────────────────────────────── */
.drag-over {
  outline: 2px dashed var(--c-primary);
  outline-offset: -4px;
  background: var(--c-primary-l);
}

/* ══════════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════════ */

/* Notebook ≤1400px: narrow sidebar (72px) */
@media (max-width: 1400px) {
  .sidebar { width: var(--w-rail); }
  .sidebar__head { justify-content: center; padding: 14px 8px; }
  .sidebar__logo-name, .sidebar__user-name, .sidebar__user-level { display: none; }
  .sidebar__quota { display: none; }
  .sidebar__user { justify-content: center; padding: 10px; }
  .sidebar__nav-item span:last-child { display: none; }
  .sidebar__nav-item { justify-content: center; padding: 10px; }
  .sidebar__nav-item.active { background: var(--c-primary-l); }
  .info-panel { display: none; }
  .chatlist-panel { width: var(--w-chatlist-nb); }
}

/* Tablet ≤900px: slide-out chatlist */
@media (max-width: 900px) {
  .chatlist-panel {
    position: fixed;
    left: var(--w-rail); top: 0; bottom: 0;
    z-index: 20;
    transform: translateX(-110%);
    transition: transform .25s;
    width: var(--w-chatlist-ip);
    box-shadow: var(--shadow-lg);
  }
  .chatlist-panel.open { transform: translateX(0); }
  .chat-header__back { display: flex; }
}

/* Mobile ≤600px */
@media (max-width: 600px) {
  .sidebar { display: none; }
  .chatlist-panel {
    position: fixed; inset: 0; left: 0;
    z-index: 10; width: 100%;
    transform: none;
    transition: none;
  }
  .chatlist-panel.hidden { display: none; }
  .chat-area {
    position: fixed; inset: 0; bottom: 56px;
    z-index: 10;
  }
  .info-panel { display: none !important; }

  /* Bottom tabs */
  .bottom-tabs {
    display: flex;
    position: fixed; bottom: 0; left: 0; right: 0;
    height: 56px;
    background: var(--c-surface);
    border-top: 1px solid var(--c-border);
    z-index: 30;
    justify-content: space-around; align-items: center;
  }
  .bottom-tab {
    display: flex; flex-direction: column; align-items: center;
    gap: 2px; font-size: 10px;
    color: var(--c-muted);
    padding: 4px 10px;
    cursor: pointer;
  }
  .bottom-tab.active { color: var(--c-primary); }
  .bottom-tab span { font-size: 20px; }

  /* Login responsive */
  .login-hero { display: none; }
  .login-form-side {
    width: 100%;
    padding: var(--pad-lg);
    min-height: 100vh;
  }
  .login-form-side::before {
    content: '🗣️ TalkMate';
    display: block;
    font-size: 22px;
    font-weight: 700;
    color: var(--c-primary);
    text-align: center;
    margin-bottom: 28px;
  }
}
@media (min-width: 601px) { .bottom-tabs { display: none; } }

/* iOS safe area */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .input-area { padding-bottom: calc(12px + env(safe-area-inset-bottom)); }
  .bottom-tabs { padding-bottom: env(safe-area-inset-bottom); height: calc(56px + env(safe-area-inset-bottom)); }
}

/* PC: show info panel */
@media (min-width: 1401px) {
  .info-panel { display: flex; flex-direction: column; }
}

/* PC: active chat shows info panel */
@media (min-width: 1401px) {
  #panel-chat.with-info .info-panel { display: flex; }
}