/* ============================================
   云聊 · 莫兰迪紫玻璃
   低饱和灰紫 · 毛玻璃拟态 · 温润通透
   ============================================ */

:root{
  /* 背景 — 莫兰迪紫渐变 */
  --paper-0:#f5f1f9;
  --paper-1:#eae3f2;
  --paper-2:#e0d7ec;
  --paper-3:#d4c9e2;

  /* 莫兰迪紫（主题 · 低饱和灰紫） */
  --wisteria-50:#f7f5fa;
  --wisteria-100:#efeaf4;
  --wisteria-200:#e3dcec;
  --wisteria-300:#d1c4e0;
  --wisteria-400:#bbacd2;
  --wisteria-500:#a89bc4;
  --wisteria-600:#8e7dae;
  --wisteria-700:#72618f;
  --wisteria-800:#574a70;

  /* 印章朱砂 · 玉石青 */
  --cinnabar:#a9442e;
  --cinnabar-soft:#f0e3dd;
  --jade:#4f7a66;

  /* 文字（灰紫，非墨色） */
  --ink-1:#f5f3f9;
  --ink-2:#e9e6f0;
  --ink-3:#d4d0df;
  --ink-4:#9a93ad;
  --ink-5:#6f6983;
  --ink-6:#524c63;

  /* 主题变量 */
  /* 玻璃拟态 */
  --glass:rgba(255,255,255,.42);
  --glass-strong:rgba(255,255,255,.68);
  --surface:rgba(255,255,255,.82);
  --surface-2:rgba(247,243,252,.72);
  --primary:var(--wisteria-600);
  --primary-hover:var(--wisteria-700);
  --primary-soft:var(--wisteria-100);
  --text:var(--ink-6);
  --text-soft:var(--ink-5);
  --text-muted:var(--ink-4);
  --border:rgba(168,155,196,.28);
  --border-strong:rgba(168,155,196,.5);

  /* 圆角 — 中式偏直角微圆 */
  --r-xs:4px;
  --r-sm:7px;
  --r-md:10px;
  --r-lg:14px;
  --r-xl:18px;

  /* 阴影 — 极轻 */
  --shadow-xs:0 1px 3px rgba(120,95,185,.07);
  --shadow-sm:0 2px 10px rgba(120,95,185,.09);
  --shadow:0 6px 22px rgba(120,95,185,.12);
  --shadow-lg:0 14px 44px rgba(120,95,185,.16);

  /* 缓动 */
  --ease:cubic-bezier(.4,0,.2,1);
  --ease-out:cubic-bezier(.22,1,.36,1);
}

/* ============================================
   基础重置
   ============================================ */
*,*::before,*::after{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  font-size:14px;
  line-height:1.65;
  color:var(--text);
  background:linear-gradient(140deg,var(--paper-0) 0%,var(--paper-1) 42%,var(--paper-2) 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
body::before{
  content:'';
  position:fixed;inset:0;
  background:
    radial-gradient(circle at 15% 10%,rgba(168,155,196,.32) 0,transparent 48%),
    radial-gradient(circle at 85% 22%,rgba(142,125,174,.26) 0,transparent 50%),
    radial-gradient(circle at 10% 90%,rgba(187,172,210,.30) 0,transparent 46%),
    radial-gradient(circle at 92% 88%,rgba(168,155,196,.24) 0,transparent 44%);
  pointer-events:none;
  z-index:-1;
}
::selection{background:var(--wisteria-200);color:var(--wisteria-800)}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--ink-3);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:var(--ink-4)}

a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--primary-hover)}

button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
img{max-width:100%;display:block}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:600;color:var(--ink-6);font-family:"Songti SC","STSong","KaiTi","SimSun","Noto Serif SC",serif}

/* ============================================
   按钮
   ============================================ */
button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  border:1px solid transparent;
  background:var(--primary);
  color:#fff;
  padding:9px 20px;
  border-radius:var(--r-sm);
  cursor:pointer;
  font-size:14px;
  font-weight:500;
  letter-spacing:1px;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
  user-select:none;
}
button:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
button:active{transform:translateY(0);box-shadow:none}
button:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

button.secondary{
  background:var(--surface);
  color:var(--wisteria-700);
  border-color:var(--border);
}
button.secondary:hover{background:var(--paper-1);border-color:var(--border-strong);color:var(--wisteria-800)}
button.ghost{
  background:transparent;
  color:var(--wisteria-700);
  box-shadow:none;
}
button.ghost:hover{background:var(--wisteria-50);border-color:var(--border);transform:none;box-shadow:none}
button.danger{
  background:var(--cinnabar);
  color:#fff;
}
button.danger:hover{background:#8f3826}

button.small{padding:6px 13px;font-size:12px;border-radius:var(--r-xs)}
button.tiny{padding:4px 10px;font-size:11px;border-radius:var(--r-xs)}
button.icon{padding:0;width:38px;height:38px}
button.full{width:100%}

/* ============================================
   表单
   ============================================ */
input,textarea,select{
  width:100%;
  padding:11px 15px;
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  background:var(--surface);
  color:var(--text);
  outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
  font-size:14px;
}
input::placeholder,textarea::placeholder{color:var(--text-muted)}
input:hover,textarea:hover{border-color:var(--border-strong)}
input:focus,textarea:focus,select:focus{
  border-color:var(--wisteria-400);
  box-shadow:0 0 0 3px rgba(168,143,169,.16);
  background:#fff;
}
textarea{resize:vertical;min-height:90px;line-height:1.6}
label{display:block;font-size:13px;color:var(--text-soft);margin-bottom:6px;font-weight:500;letter-spacing:.5px}

/* ============================================
   认证页 / 卡片
   ============================================ */
.auth{
  min-height:100vh;
  display:grid;
  place-items:center;
  padding:22px;
  position:relative;
}
.card{
  position:relative;
  width:min(420px,100%);
  background:var(--glass-strong);
  backdrop-filter:blur(24px) saturate(160%);
  -webkit-backdrop-filter:blur(24px) saturate(160%);
  padding:44px 38px 38px;
  border-radius:var(--r-xl);
  box-shadow:var(--shadow);
  border:1px solid rgba(255,255,255,.7);
  text-align:center;
  animation:cardIn .5s var(--ease-out);
}
.card::before{
  content:'';
  position:absolute;
  top:0;left:30px;right:30px;height:2px;
  background:linear-gradient(90deg,transparent,var(--wisteria-300),var(--cinnabar),var(--wisteria-300),transparent);
  opacity:.7;
}
.card::after{
  content:'云';
  position:absolute;
  top:18px;right:26px;
  font-size:54px;
  font-weight:400;
  color:var(--wisteria-100);
  font-family:"KaiTi","STKaiti","Songti SC",serif;
  pointer-events:none;
  user-select:none;
}
@keyframes cardIn{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:translateY(0)}
}
.card .brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:62px;height:62px;
  margin:0 auto 12px;
  background:linear-gradient(150deg,var(--wisteria-300),var(--wisteria-500));
  border-radius:20%;
  box-shadow:var(--shadow-xs);
  font-size:30px;
  color:#fff;
  font-family:"KaiTi","STKaiti",serif;
}
.card h1{
  margin:0 0 6px;
  font-size:26px;
  font-weight:500;
  letter-spacing:8px;
  color:var(--ink-6);
}
.card .sub{
  color:var(--text-muted);
  font-size:12.5px;
  letter-spacing:2px;
  margin-bottom:24px;
}
.card form{display:grid;gap:13px;margin:22px 0 10px;text-align:left}
.card form .field{position:relative}
.card form button{padding:12px;letter-spacing:5px;font-size:15px}
.card .links{margin-top:16px;font-size:13px;color:var(--text-soft)}
.card .links a{color:var(--primary);margin:0 4px}
#m,#p,#err{
  color:var(--cinnabar);
  background:var(--cinnabar-soft);
  padding:9px 14px;
  border-radius:var(--r-xs);
  border-left:2px solid var(--cinnabar);
  font-size:13px;
  margin-top:10px;
  min-height:18px;
  display:none;
  text-align:left;
}
#m.show,#p.show,#err.show{display:block;animation:pulseIn .3s var(--ease-out)}
@keyframes pulseIn{
  0%{opacity:0;transform:translateY(-4px)}
  100%{opacity:1;transform:translateY(0)}
}
.bigav{
  width:96px;height:96px;
  border-radius:20%;
  object-fit:cover;
  background:var(--wisteria-100);
  border:2px solid #fff;
  box-shadow:var(--shadow-xs);
  margin:0 auto 18px;
  display:block;
}
.back-link{
  position:absolute;
  left:22px;top:20px;
  color:var(--wisteria-600);
  font-size:13px;
  display:inline-flex;
  align-items:center;
  gap:4px;
  padding:6px 12px;
  border-radius:var(--r-xs);
  transition:background .18s var(--ease);
}
.back-link:hover{background:var(--wisteria-50)}

/* ============================================
   顶部导航
   ============================================ */
header{
  position:sticky;
  top:0;z-index:50;
  height:60px;
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid var(--border);
  display:flex;
  align-items:center;
  gap:14px;
  padding:0 22px;
}
header .logo{
  display:flex;align-items:center;gap:10px;
  font-size:17px;
  font-weight:500;
  letter-spacing:4px;
  color:var(--ink-6);
  font-family:"KaiTi","STKaiti","Songti SC",serif;
}
header .logo-icon{
  width:32px;height:32px;
  background:linear-gradient(150deg,var(--wisteria-400),var(--wisteria-600));
  border-radius:8px;
  display:grid;place-items:center;
  color:#fff;
  font-size:15px;
  font-family:"KaiTi","STKaiti",serif;
}
header .nav-links{
  display:flex;align-items:center;gap:2px;
  margin-left:auto;
}
header a,header span{
  display:inline-flex;
  align-items:center;
  gap:5px;
  color:var(--text-soft);
  font-size:13px;
  padding:7px 14px;
  border-radius:var(--r-xs);
  transition:background .18s var(--ease),color .18s var(--ease);
  cursor:pointer;
}
header a:hover,header span:hover{background:var(--wisteria-50);color:var(--wisteria-700)}
header a.active{background:var(--wisteria-50);color:var(--wisteria-700)}
header .bell{position:relative;cursor:pointer}
header .bell::after{
  content:'';
  position:absolute;
  top:6px;right:8px;
  width:6px;height:6px;
  background:var(--cinnabar);
  border-radius:50%;
}

/* ============================================
   主体布局
   ============================================ */
main{
  position:relative;
  height:calc(100vh - 60px);
  display:grid;
  grid-template-columns:316px 1fr;
  overflow:hidden;
}

/* ============================================
   侧边栏
   ============================================ */
aside{
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  border-right:1px solid var(--border);
  padding:16px 13px;
  overflow-y:auto;
  overflow-x:hidden;
  display:flex;
  flex-direction:column;
  gap:13px;
}
.search-box{position:relative;display:flex;gap:8px}
.search-box input{
  flex:1;
  padding-left:36px;
  background:var(--surface);
  border-radius:var(--r-md);
}
.search-box::before{
  content:'⌕';
  position:absolute;
  left:13px;top:50%;transform:translateY(-50%);
  color:var(--ink-4);
  font-size:16px;
  pointer-events:none;
}
.tab-bar{
  display:flex;
  gap:2px;
  border-bottom:1px solid var(--border);
  padding:0 2px;
}
.tab-bar button{
  flex:1;
  background:transparent;
  color:var(--text-soft);
  padding:9px 2px;
  font-size:13px;
  font-weight:500;
  border-radius:0;
  box-shadow:none;
  letter-spacing:2px;
  border:0;
  border-bottom:2px solid transparent;
  margin-bottom:-1px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.tab-bar button:hover{background:transparent;color:var(--wisteria-700);transform:none;box-shadow:none}
.tab-bar button.active{
  color:var(--wisteria-700);
  border-bottom-color:var(--wisteria-500);
  background:transparent;
}

aside .section-title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 4px;
  margin-top:6px;
}
aside h3{
  margin:0;
  font-size:12px;
  font-weight:600;
  color:var(--text-soft);
  letter-spacing:4px;
}
aside h3::before{content:'❀';margin-right:6px;color:var(--wisteria-400);font-size:11px}
aside .section-title .count{
  font-size:11px;
  color:var(--text-muted);
  padding:2px 8px;
  border-radius:10px;
}
aside .empty-hint{
  text-align:center;
  padding:34px 14px;
  color:var(--text-soft);
  font-size:13px;
  letter-spacing:2px;
  line-height:2;
}
aside .empty-hint .icon{font-size:30px;display:block;margin-bottom:6px;opacity:.5}

/* ============================================
   会话列表
   ============================================ */
.row{
  display:flex;
  align-items:center;
  gap:11px;
  padding:10px 11px;
  border-radius:var(--r-sm);
  background:transparent;
  cursor:pointer;
  transition:background .16s var(--ease),transform .16s var(--ease);
  position:relative;
  border:1px solid transparent;
}
.row:hover{background:var(--surface);border-color:var(--border)}
.row.active{
  background:var(--wisteria-50);
  border-color:var(--border-strong);
}
.row .meta{flex:1;min-width:0}
.row .actions{
  margin-left:auto;
  display:flex;
  gap:6px;
  opacity:0;
  transition:opacity .16s var(--ease);
}
.row:hover .actions{opacity:1}
.row .actions button{padding:3px 9px;font-size:11px;border-radius:var(--r-xs)}

.ava{
  width:44px;height:44px;
  border-radius:18%;
  display:grid;
  place-items:center;
  background:linear-gradient(150deg,var(--wisteria-200),var(--wisteria-400));
  color:#fff;
  font-weight:600;
  font-size:16px;
  flex-shrink:0;
  font-family:"KaiTi","STKaiti",serif;
}
.ava.lg{width:54px;height:54px;font-size:20px}
.ava.online{position:relative}
.ava.online::after{
  content:'';
  position:absolute;
  right:-1px;bottom:-1px;
  width:10px;height:10px;
  background:var(--jade);
  border:2px solid #fff;
  border-radius:50%;
}
.row b{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--ink-6);
  letter-spacing:1px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.row small{
  display:block;
  color:var(--text-soft);
  font-size:12px;
  margin-top:2px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.row .badge{
  margin-left:auto;
  min-width:19px;
  height:19px;
  padding:0 6px;
  border-radius:10px;
  background:var(--cinnabar);
  color:#fff;
  font-size:11px;
  display:grid;
  place-items:center;
}

/* ============================================
   聊天区
   ============================================ */
section{
  display:flex;
  flex-direction:column;
  min-width:0;
  background:linear-gradient(160deg,var(--paper-0) 0%,var(--paper-1) 100%);
  position:relative;
}

#roomhead{
  height:62px;
  padding:0 20px;
  display:flex;
  align-items:center;
  gap:12px;
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--border);
  position:relative;
  z-index:2;
}
#roomhead .room-text{flex:1;min-width:0}
#roomtitle{
  font-size:15px;
  font-weight:600;
  color:var(--ink-6);
  letter-spacing:2px;
  font-family:"KaiTi","STKaiti","Songti SC",serif;
}
#roomhead .room-actions{margin-left:auto;display:flex;gap:8px}
#roomhead .room-actions button{
  width:34px;height:34px;
  padding:0;
  background:var(--wisteria-50);
  color:var(--wisteria-700);
  border:1px solid var(--border);
  box-shadow:none;
}
#roomhead .room-actions button:hover{background:var(--wisteria-100);transform:none;box-shadow:none}
#roomhead .room-info{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  font-size:12px;
  color:var(--text-soft);
  letter-spacing:1px;
}

#msgs{
  flex:1;
  overflow-y:auto;
  overflow-x:hidden;
  padding:24px 22px;
  display:none;
  scroll-behavior:smooth;
}
.empty-state{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:30px;
  gap:18px;
  color:var(--text-soft);
}
.empty-state .deco{
  position:relative;
  width:120px;height:120px;
  display:grid;
  place-items:center;
}
.empty-state .deco::before{
  content:'';
  position:absolute;inset:0;
  border-radius:20%;
  background:var(--wisteria-50);
  border:1px solid var(--wisteria-200);
}
.empty-state .deco .icon{
  position:relative;
  font-size:44px;
  color:var(--wisteria-400);
}
.empty-state h2{
  font-size:17px;
  font-weight:500;
  color:var(--wisteria-700);
  letter-spacing:5px;
}
.empty-state p{
  margin:0;
  font-size:13px;
  letter-spacing:2px;
  max-width:280px;
  line-height:2;
  color:var(--text-muted);
}

#send{
  display:none;
  gap:10px;
  padding:13px 16px;
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-top:1px solid var(--border);
  align-items:flex-end;
  position:relative;
}
#send textarea{
  flex:1;
  background:var(--surface-2);
  border-radius:var(--r-md);
  padding:10px 16px;
  font-size:14px;
  line-height:1.5;
  max-height:120px;
  resize:none;
}
#send button#upload,#send button#emojiBtn{
  width:38px;height:38px;
  padding:0;
  background:var(--wisteria-50);
  color:var(--wisteria-700);
  border:1px solid var(--border);
  box-shadow:none;
  font-size:16px;
  flex-shrink:0;
}
#send button#upload:hover{background:var(--wisteria-100);transform:none;box-shadow:none}
#send button[type=submit],#send button:last-child{
  padding:9px 20px;
  letter-spacing:3px;
  flex-shrink:0;
}

/* ============================================
   消息气泡
   ============================================ */
.msg,.mine{
  display:flex;
  gap:9px;
  max-width:72%;
  margin:9px 0;
  animation:bubbleIn .28s var(--ease-out);
}
@keyframes bubbleIn{
  from{opacity:0;transform:translateY(6px)}
  to{opacity:1;transform:translateY(0)}
}
.mine{margin-left:auto;flex-direction:row-reverse}
.msg .ava,.mine .ava{width:34px;height:34px;font-size:13px;border-radius:14%}
.msg .bubble,.mine .bubble{
  padding:10px 15px;
  border-radius:var(--r-md);
  word-break:break-word;
  line-height:1.6;
  font-size:14px;
  position:relative;
  min-width:56px;
}
.msg .bubble{
  background:var(--glass-strong);
  backdrop-filter:blur(10px) saturate(140%);
  -webkit-backdrop-filter:blur(10px) saturate(140%);
  color:var(--text);
  border:1px solid rgba(255,255,255,.6);
}
.mine .bubble{
  background:var(--wisteria-700);
  color:#fff;
}
.msg b,.mine b{
  display:block;
  font-size:11px;
  font-weight:600;
  opacity:.6;
  margin-bottom:3px;
  letter-spacing:1px;
}
.mine b{color:rgba(255,255,255,.85)}
.msg small,.mine small{
  display:block;
  font-size:11px;
  opacity:.75;
  margin-top:4px;
  text-align:right;
}
.mine small{color:rgba(255,255,255,.8)}
.msg-system{text-align:center;margin:14px 0}
.msg-system span{
  display:inline-block;
  padding:4px 14px;
  background:var(--wisteria-50);
  color:var(--wisteria-600);
  border:1px solid var(--wisteria-200);
  border-radius:var(--r-lg);
  font-size:11px;
  letter-spacing:2px;
}
.msg-revoked{
  text-align:center;
  font-size:12px;
  color:var(--text-muted);
  margin:8px 0;
  font-style:italic;
  letter-spacing:1px;
}
.msg-sep{
  text-align:center;
  font-size:11px;
  color:var(--text-muted);
  margin:14px 0;
  letter-spacing:1px;
}
.msg-sep::before,.msg-sep::after{content:' ';display:inline-block;width:24px;border-top:1px solid var(--border);margin:0 8px;vertical-align:middle}
.msg-img{max-width:240px;max-height:380px;border-radius:var(--r-sm);cursor:zoom-in;display:block;margin:4px 0}
.msg-file{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;
  background:var(--wisteria-50);
  border:1px solid var(--wisteria-200);
  border-radius:var(--r-sm);
  color:var(--text);
  text-decoration:none;
  min-width:200px;
}
.msg-file:hover{background:var(--wisteria-100)}
.msg-file .file-icon{font-size:24px}
.msg-file .file-info{display:flex;flex-direction:column;font-size:13px}
.msg-file .file-info small{color:var(--text-muted);font-size:11px}
.reply-quote{
  font-size:12px;
  padding:4px 10px;
  margin-bottom:6px;
  background:var(--wisteria-50);
  border-left:2px solid var(--wisteria-400);
  border-radius:var(--r-xs);
  color:var(--text-soft);
  max-width:280px;
}
.mine .reply-quote{background:rgba(255,255,255,.18);color:rgba(255,255,255,.92);border-left-color:rgba(255,255,255,.55)}
.msg-actions{
  display:none;
  position:absolute;
  top:-22px;right:8px;
  background:var(--surface-solid);
  border:1px solid var(--border);
  border-radius:var(--r-xs);
  box-shadow:var(--shadow-sm);
  padding:2px;
  z-index:5;
}
.mine .msg-actions{left:8px;right:auto}
.msg:hover .msg-actions,.mine:hover .msg-actions{display:flex}
.msg-actions button{padding:2px 8px;font-size:11px;border-radius:var(--r-xs);background:transparent;color:var(--wisteria-700);box-shadow:none}
.msg-actions button:hover{background:var(--wisteria-50);transform:none;box-shadow:none}

.reply-bar{
  display:none;
  align-items:center;
  justify-content:space-between;
  padding:8px 14px;
  background:var(--wisteria-50);
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--text-soft);
}
.reply-bar b{color:var(--wisteria-700);margin-right:8px}
.reply-bar button{
  background:transparent;color:var(--text-muted);box-shadow:none;
  padding:2px 8px;font-size:18px;border-radius:50%;
}
.reply-bar button:hover{color:var(--cinnabar);background:transparent;transform:none;box-shadow:none}

.icon-btn{
  background:var(--wisteria-50);
  color:var(--wisteria-700);
  border:1px solid var(--border);
  width:34px;height:34px;
  padding:0;
  border-radius:50%;
  font-size:16px;
  box-shadow:none;
  cursor:pointer;
  transition:all .18s var(--ease);
}
.icon-btn:hover{background:var(--wisteria-100);transform:none;box-shadow:none}

.ava-img{
  width:38px;height:38px;
  border-radius:18%;
  object-fit:cover;
  background:var(--wisteria-100);
  flex-shrink:0;
}

.announcement{
  background:var(--wisteria-50);
  border-bottom:1px solid var(--border);
  padding:10px 18px;
  font-size:12px;
  color:var(--wisteria-700);
  letter-spacing:1px;
  display:flex;
  align-items:center;
  gap:8px;
}
.announcement b{font-weight:600}

.group-title{
  padding:6px 10px;
  font-size:11px;
  font-weight:600;
  color:var(--text-muted);
  letter-spacing:3px;
  margin-top:6px;
}
.group-title:first-child{margin-top:0}
.row .pin-mark{color:var(--wisteria-500);margin-right:4px;font-size:12px}
.row .muted-mark{color:var(--text-muted);margin-right:4px;font-size:11px}
.row .time{font-size:11px;color:var(--text-muted);margin-left:auto;flex-shrink:0}
.row .meta-top{display:flex;align-items:center;gap:4px}
.row .meta-bottom{display:flex;align-items:center;gap:4px;margin-top:2px}
.row .meta-bottom small{flex:1;min-width:0}
.row .badge{margin-left:0}
.row.pinned{background:linear-gradient(90deg,var(--wisteria-50),transparent)}

.emoji-panel{
  position:absolute;
  bottom:62px;left:90px;
  background:var(--glass-strong);
  backdrop-filter:blur(20px) saturate(160%);
  -webkit-backdrop-filter:blur(20px) saturate(160%);
  border:1px solid rgba(255,255,255,.7);
  border-radius:var(--r-md);
  box-shadow:var(--shadow);
  padding:10px;
  display:grid;
  grid-template-columns:repeat(8,1fr);
  gap:4px;
  max-width:340px;
  z-index:30;
}
.emoji-panel span{
  font-size:20px;
  padding:4px;
  cursor:pointer;
  border-radius:var(--r-xs);
  text-align:center;
  transition:background .15s var(--ease);
}
.emoji-panel span:hover{background:var(--wisteria-50)}

.notify-panel{
  position:fixed;
  top:60px;right:18px;
  width:360px;max-width:calc(100vw - 36px);
  max-height:70vh;
  background:var(--glass-strong);
  backdrop-filter:blur(20px) saturate(160%);
  -webkit-backdrop-filter:blur(20px) saturate(160%);
  border:1px solid rgba(255,255,255,.7);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-lg);
  z-index:60;
  overflow:hidden;
  display:flex;
  flex-direction:column;
}
.notify-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;
  border-bottom:1px solid var(--border);
  font-size:13px;
}
.notify-head b{font-size:14px;color:var(--wisteria-700)}
.notify-head button{padding:3px 10px;font-size:11px;border-radius:var(--r-xs);background:transparent;color:var(--wisteria-700);box-shadow:none}
.notify-head button:hover{background:var(--wisteria-50)}
.notify-list{flex:1;overflow-y:auto;padding:8px}
.notify-item{
  padding:10px 12px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  margin-bottom:6px;
  cursor:pointer;
  transition:background .15s var(--ease);
}
.notify-item:hover{background:var(--surface)}
.notify-item.unread{background:var(--wisteria-50);border-color:var(--wisteria-200)}
.notify-item b{display:block;font-size:13px;color:var(--ink-6);margin-bottom:2px}
.notify-item p{margin:4px 0;font-size:12px;color:var(--text-soft);line-height:1.5}
.notify-item small{font-size:11px;color:var(--text-muted)}
#notifyDot{
  position:absolute;top:2px;left:50%;margin-left:-2px;
  width:8px;height:8px;background:var(--cinnabar);
  border-radius:50%;
  display:none;
}

.lightbox{
  position:fixed;inset:0;
  background:rgba(20,15,30,.85);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  z-index:200;
  display:grid;
  place-items:center;
  cursor:zoom-out;
}
.lightbox img{max-width:90vw;max-height:90vh;object-fit:contain;border-radius:var(--r-md)}

.call-modal{
  position:fixed;inset:0;
  background:rgba(20,15,30,.65);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  z-index:150;
  display:grid;place-items:center;
}
.call-box{
  position:relative;
  background:var(--surface);
  border-radius:var(--r-lg);
  padding:24px;
  width:min(420px,90vw);
  text-align:center;
  box-shadow:var(--shadow-lg);
}
.call-box video{width:100%;border-radius:var(--r-sm);background:#000;margin-bottom:12px;max-height:280px}
.call-info{margin:14px 0}
.call-info b{display:block;font-size:17px;color:var(--wisteria-700);margin-bottom:4px;font-family:var(--wisteria-font,serif)}
.call-info span{font-size:12px;color:var(--text-muted)}
.call-actions{display:flex;gap:10px;justify-content:center}
.call-actions button{flex:1}

.toolbar{display:flex;gap:8px;margin-bottom:12px}
.toolbar input,.toolbar select{flex:1;font-size:13px;padding:8px 12px}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:12px}
.stat-card{
  padding:18px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  text-align:center;
}
.stat-card b{display:block;font-size:24px;color:var(--wisteria-700);font-weight:600;margin-bottom:4px}
.stat-card span{display:block;font-size:12px;color:var(--text-soft);letter-spacing:2px}
.stat-card i{display:block;font-size:11px;color:var(--text-muted);margin-top:4px}
.stat-card.warn b{color:var(--cinnabar)}
.role{
  display:inline-block;
  padding:1px 7px;
  margin-left:6px;
  background:var(--wisteria-100);
  color:var(--wisteria-700);
  border-radius:8px;
  font-size:10px;
  font-style:normal;
  letter-spacing:1px;
}

.group-info{padding:0 4px;max-height:60vh;overflow-y:auto}
.announce{
  padding:12px 14px;
  background:var(--wisteria-50);
  border:1px solid var(--wisteria-200);
  border-radius:var(--r-sm);
  margin-bottom:12px;
}
.announce b{display:block;font-size:12px;color:var(--wisteria-700);margin-bottom:4px;letter-spacing:1px}
.announce p{margin:0;font-size:13px;color:var(--text);line-height:1.6}
.gi-meta{margin-bottom:14px}
.gi-meta b{display:block;font-size:16px;color:var(--ink-6);font-family:var(--wisteria-font,serif);letter-spacing:2px;margin-bottom:4px}
.gi-meta p{margin:0 0 6px;font-size:13px;color:var(--text-soft);line-height:1.5}
.gi-meta span{font-size:11px;color:var(--text-muted)}
.group-info h4{margin:14px 0 8px;font-size:13px;color:var(--text-soft);letter-spacing:2px;font-weight:600}
.member-list{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.member{
  display:flex;align-items:center;gap:8px;
  padding:6px 8px;
  background:var(--surface);
  border-radius:var(--r-sm);
  font-size:13px;
}
.member img{width:28px;height:28px;border-radius:14%}
.member i{margin-left:auto;font-style:normal;font-size:10px;color:var(--wisteria-700);background:var(--wisteria-100);padding:1px 6px;border-radius:8px}

/* ============================================
   返回按钮 / 建群
   ============================================ */
.mobile-back{
  display:none;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  background:var(--wisteria-50);
  color:var(--wisteria-700);
  border:1px solid var(--border);
  padding:0;
  font-size:16px;
  box-shadow:none;
  flex-shrink:0;
}
.mobile-back:hover{background:var(--wisteria-100);transform:none;box-shadow:none}

.create-group-form{
  padding:14px;
  background:var(--surface);
  border-radius:var(--r-md);
  border:1px solid var(--border);
}
.create-group-form input{margin-bottom:11px}
.create-group-form .members{
  max-height:240px;
  overflow-y:auto;
  padding:6px;
  background:var(--surface-2);
  border-radius:var(--r-xs);
  border:1px solid var(--border);
  margin-bottom:11px;
}
.create-group-form .members label{
  display:flex;
  align-items:center;
  gap:8px;
  padding:6px 8px;
  border-radius:var(--r-xs);
  cursor:pointer;
  margin:0;
  transition:background .16s var(--ease);
}
.create-group-form .members label:hover{background:var(--wisteria-50)}
.create-group-form .members input[type=checkbox]{width:auto;margin:0;accent-color:var(--wisteria-500)}
.create-group-form .actions{display:flex;gap:8px}
.create-group-form .actions button{flex:1}

/* ============================================
   后台
   ============================================ */
.admin-card{
  width:min(900px,100%);
  padding:40px 36px;
  text-align:left;
}
.admin-card h1{text-align:center;margin-bottom:8px}
.admin-card .sub{text-align:center}
.admin-card .tabs{
  display:flex;
  gap:6px;
  margin-top:18px;
  border-bottom:1px solid var(--border);
}
.admin-card .tabs button{
  background:transparent;
  color:var(--text-soft);
  box-shadow:none;
  padding:10px 18px;
  border:0;
  border-bottom:2px solid transparent;
  border-radius:0;
  margin-bottom:-1px;
}
.admin-card .tabs button:hover{background:transparent;color:var(--wisteria-700);transform:none}
.admin-card .tabs button.active{color:var(--wisteria-700);border-bottom-color:var(--wisteria-500)}
.admin-card #out{margin-top:18px}
.admin-card .row{
  padding:13px;
  margin-bottom:8px;
  background:var(--surface);
  border:1px solid var(--border);
}
.admin-card .row b{color:var(--ink-6)}
.admin-card .row small{color:var(--text-muted);margin-top:3px}
.admin-card .msg-row{
  padding:14px;
  margin-bottom:10px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-md);
}
.admin-card .msg-row .head{
  display:flex;
  justify-content:space-between;
  font-size:12px;
  color:var(--text-muted);
  margin-bottom:6px;
}
.admin-card .msg-row .head b{color:var(--wisteria-700);font-weight:600}
.admin-card .msg-row .body{
  color:var(--text);
  font-size:14px;
  word-break:break-word;
  line-height:1.6;
}
.admin-card .empty-hint{
  text-align:center;
  padding:46px 20px;
  color:var(--text-muted);
  font-size:13px;
  letter-spacing:2px;
}

/* ============================================
   Toast 通知
   ============================================ */
.toast{
  position:fixed;
  top:22px;left:50%;
  transform:translateX(-50%);
  padding:10px 22px;
  background:var(--glass-strong);
  backdrop-filter:blur(16px) saturate(160%);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  border:1px solid rgba(255,255,255,.65);
  border-left:2px solid var(--wisteria-400);
  border-radius:var(--r-sm);
  box-shadow:var(--shadow);
  font-size:13px;
  color:var(--ink-6);
  letter-spacing:1px;
  z-index:1000;
  animation:toastIn .28s var(--ease-out),toastOut .28s var(--ease) 2.6s forwards;
}
.toast.success{border-left-color:var(--jade)}
.toast.error{border-left-color:var(--cinnabar);color:var(--cinnabar)}
@keyframes toastIn{
  from{opacity:0;transform:translateX(-50%) translateY(-14px)}
  to{opacity:1;transform:translateX(-50%) translateY(0)}
}
@keyframes toastOut{
  to{opacity:0;transform:translateX(-50%) translateY(-14px)}
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay{
  position:fixed;inset:0;
  background:rgba(55,51,44,.22);
  display:grid;
  place-items:center;
  z-index:100;
}
.modal{
  background:var(--glass-strong);
  backdrop-filter:blur(20px) saturate(160%);
  -webkit-backdrop-filter:blur(20px) saturate(160%);
  padding:30px;
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);
  border:1px solid rgba(255,255,255,.7);
  width:min(400px,90%);
  text-align:center;
}
.modal h3{margin:0 0 12px;color:var(--wisteria-700);letter-spacing:3px}
.modal p{color:var(--text-soft);margin:0 0 20px}
.modal .actions{display:flex;gap:10px;justify-content:center}

/* ============================================
   加载动画
   ============================================ */
.loading{
  display:flex;
  align-items:center;
  justify-content:center;
  padding:40px 20px;
  color:var(--text-muted);
  font-size:13px;
  letter-spacing:2px;
  gap:8px;
}
.loading::before{
  content:'';
  width:14px;height:14px;
  border:2px solid var(--wisteria-200);
  border-top-color:var(--wisteria-500);
  border-radius:50%;
  animation:spin .8s linear infinite;
}
.loading-inline{
  display:inline-block;
  width:12px;height:12px;
  border:2px solid var(--wisteria-200);
  border-top-color:var(--wisteria-500);
  border-radius:50%;
  animation:spin .8s linear infinite;
  vertical-align:middle;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============================================
   响应式
   ============================================ */
@media(max-width:860px){
  main{grid-template-columns:280px 1fr}
}
@media(max-width:760px){
  .card{padding:36px 26px 32px;border-radius:var(--r-lg)}
  .card::after{font-size:44px;top:14px;right:18px}
  .card h1{font-size:23px;letter-spacing:6px}
  main{grid-template-columns:1fr;position:relative}
  aside{width:100%;height:100%}
  section{
    position:absolute;top:0;right:0;bottom:0;left:0;
    z-index:5;
    background:var(--paper-0);
    transform:translateX(100%);
    transition:transform .3s var(--ease-out);
    pointer-events:none;
  }
  section.mobile-open{transform:translateX(0);pointer-events:auto}
  .mobile-back{display:inline-flex}
  #msgs{padding:16px}
  .msg,.mine{max-width:86%}
  #send{padding:11px}
  #send button[type=submit],#send button:last-child{padding:8px 15px}
  .row{padding:9px}
  .row .actions{opacity:1}
  header{padding:0 14px}
  header .logo{font-size:15px;letter-spacing:3px}
  header .logo-icon{width:28px;height:28px;font-size:13px;border-radius:7px}
  header a{font-size:12px;padding:6px 10px}
  .empty-state .deco{width:104px;height:104px}
  .empty-state .deco .icon{font-size:38px}
  .empty-state h2{font-size:16px}
}
@media(max-width:420px){
  .card{padding:30px 22px}
  .card h1{font-size:21px}
  .card .brand-mark{width:52px;height:52px;font-size:26px}
  .tab-bar button{font-size:12px;letter-spacing:1px}
  .ava{width:40px;height:40px;font-size:14px}
}

/* ============================================
   减弱动效偏好
   ============================================ */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
}