/* ================= 星聊 · 样式系统 ================= */
:root{
  --brand:#07c160; --brand-2:#06ad56; --brand-soft:rgba(7,193,96,.12);
  --bg:#f7f7f7; --rail:#2b2c2e; --rail-hover:#3a3b3e; --sidebar:#ececec;
  --chat-bg:#f5f5f5; --panel:#fff; --panel-2:#fafafa;
  --text:#191919; --text-2:#7c7c7c; --text-3:#a9a9a9;
  --border:#e4e4e4; --border-2:#ededed;
  --hover:rgba(0,0,0,.045); --active:rgba(0,0,0,.075);
  --bubble-me:#95ec69; --bubble-other:#fff;
  --danger:#fa5151; --warn:#f0a020; --blue:#576b95;
  --shadow:0 10px 40px rgba(0,0,0,.12);
  --radius:10px;
  --ease:cubic-bezier(.16,1,.3,1);
}
body[data-theme="dark"]{
  --bg:#171819; --rail:#202122; --rail-hover:#2e2f31; --sidebar:#202122;
  --chat-bg:#171819; --panel:#252628; --panel-2:#2a2b2d;
  --text:#e9e9e9; --text-2:#9b9b9b; --text-3:#747474;
  --border:#353638; --border-2:#303133;
  --hover:rgba(255,255,255,.055); --active:rgba(255,255,255,.09);
  --bubble-me:#3a7d4e; --bubble-other:#2e3032;
  --brand-soft:rgba(7,193,96,.16); --blue:#8aa4d8;
  --shadow:0 10px 40px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  font-size:14px; color:var(--text); background:var(--bg);
  -webkit-font-smoothing:antialiased; overflow:hidden;
}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
input,textarea{outline:none;border:0;background:none}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.hidden{display:none !important}
::-webkit-scrollbar{width:7px;height:7px}
::-webkit-scrollbar-thumb{background:rgba(128,128,128,.28);border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:rgba(128,128,128,.48)}
::-webkit-scrollbar-track{background:transparent}
::selection{background:var(--brand-soft)}

/* ================= 头像 ================= */
.avatar{
  --c1:#4ecb8f;--c2:#07c160;
  width:40px;height:40px;border-radius:6px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c1),var(--c2));
  color:#fff;font-size:16px;font-weight:600;letter-spacing:.5px;
  user-select:none;overflow:hidden;position:relative;
}
.avatar.sm{width:30px;height:30px;font-size:12px;border-radius:5px}
.avatar.lg{width:64px;height:64px;font-size:26px;border-radius:10px}
.avatar.xl{width:82px;height:82px;font-size:32px;border-radius:14px}
.avatar[data-color="green"]{--c1:#5ed99a;--c2:#0bb45f}
.avatar[data-color="blue"]{--c1:#5aa9f5;--c2:#3a6fd8}
.avatar[data-color="rose"]{--c1:#ff9a9e;--c2:#f2607a}
.avatar[data-color="violet"]{--c1:#b28af0;--c2:#7a54d6}
.avatar[data-color="amber"]{--c1:#ffc46b;--c2:#f0932b}
.avatar[data-color="teal"]{--c1:#5ad4d1;--c2:#1a9e9c}
.avatar[data-color="grey"]{--c1:#b8bec7;--c2:#858d99}
.avatar[data-color="group"]{--c1:#67c7a5;--c2:#2c9c78}
.avatar img{width:100%;height:100%;object-fit:cover}
.group-avatar{display:grid;grid-template-columns:1fr 1fr;gap:1px;padding:2px;background:var(--panel-2)}
.group-avatar i{display:flex;align-items:center;justify-content:center;font-style:normal;font-size:10px;color:#fff;border-radius:2px;background:#7bbfa0}
.online-dot{position:absolute;right:-2px;bottom:-2px;width:10px;height:10px;border-radius:50%;background:var(--brand);border:2px solid var(--rail)}

/* ================= 登录页 ================= */
.auth-screen{
  position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(1200px 700px at 18% 18%,#1d3b46 0%,transparent 58%),
             radial-gradient(900px 600px at 85% 80%,#24304f 0%,transparent 60%),
             #0d1118;overflow:auto;padding:32px 20px;
}
.auth-screen.leaving{animation:authOut .45s var(--ease) forwards}
@keyframes authOut{to{opacity:0;transform:scale(1.04);filter:blur(6px)}}
.auth-stars{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.auth-stars::before,.auth-stars::after{
  content:"";position:absolute;inset:-50%;
  background-image:radial-gradient(1.5px 1.5px at 20% 30%,rgba(255,255,255,.7) 50%,transparent 51%),
    radial-gradient(1.5px 1.5px at 70% 60%,rgba(255,255,255,.55) 50%,transparent 51%),
    radial-gradient(2px 2px at 40% 80%,rgba(255,255,255,.45) 50%,transparent 51%),
    radial-gradient(1px 1px at 85% 15%,rgba(255,255,255,.7) 50%,transparent 51%),
    radial-gradient(1.5px 1.5px at 12% 70%,rgba(255,255,255,.5) 50%,transparent 51%),
    radial-gradient(1px 1px at 55% 12%,rgba(255,255,255,.6) 50%,transparent 51%);
  background-size:340px 300px,420px 380px,300px 320px,260px 280px,380px 360px,300px 300px;
  animation:starDrift 90s linear infinite;opacity:.75;
}
.auth-stars::after{opacity:.35;transform:scale(1.4) rotate(20deg);animation-duration:150s;animation-direction:reverse}
@keyframes starDrift{to{transform:translate3d(-120px,-80px,0)}}
.auth-glow{position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(7,193,96,.18),transparent 65%);filter:blur(10px);pointer-events:none}
.auth-inner{position:relative;display:grid;grid-template-columns:minmax(320px,440px) 400px;gap:80px;align-items:center;max-width:1040px;width:100%;z-index:1}
.hero-logo{width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;background:linear-gradient(140deg,#20d989,#07a855);box-shadow:0 12px 34px rgba(7,193,96,.35);animation:floaty 5s ease-in-out infinite}
.hero-logo svg{width:30px;height:30px;fill:#fff;stroke:none}
@keyframes floaty{50%{transform:translateY(-8px)}}
.auth-hero h1{font-size:64px;line-height:1.1;letter-spacing:-2px;margin:24px 0 4px;color:#fff;font-weight:700}
.hero-dot{font-size:26px;color:var(--brand);vertical-align:top;margin-left:8px}
.hero-en{color:rgba(255,255,255,.42);letter-spacing:7px;font-size:11px;margin:0 0 28px}
.hero-desc{color:rgba(255,255,255,.72);font-size:16px;line-height:1.9;margin:0 0 38px}
.hero-feats{display:flex;flex-direction:column;gap:18px}
.hero-feats>div{display:flex;gap:14px;align-items:center;animation:fadeUp .7s var(--ease) both}
.hero-feats>div:nth-child(2){animation-delay:.1s}.hero-feats>div:nth-child(3){animation-delay:.2s}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.feat-ic{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);color:#7ee2af}
.hero-feats b{display:block;color:#fff;font-size:14px;font-weight:600}
.hero-feats small{display:block;color:rgba(255,255,255,.62);font-size:12px;margin-top:3px}
.auth-card{
  background:rgba(255,255,255,.97);color:#191919;border-radius:20px;padding:34px 34px 26px;
  box-shadow:0 30px 80px rgba(0,0,0,.45),0 0 0 1px rgba(255,255,255,.1);
  animation:cardIn .7s var(--ease) both;
}
@keyframes cardIn{from{opacity:0;transform:translateY(24px) scale(.97)}to{opacity:1;transform:none}}
body[data-theme="dark"] .auth-card{background:#202226;color:#eee;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.auth-card-head{display:flex;align-items:center;gap:14px;margin-bottom:26px}
.auth-mini-logo{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(140deg,#20d989,#07a855)}
.auth-mini-logo svg{width:24px;height:24px;fill:#fff;stroke:none}
.auth-card-head h2{margin:0;font-size:22px;font-weight:650}
.auth-card-head p{margin:3px 0 0;font-size:12.5px;color:#999}
.auth-tabs{position:relative;display:flex;border-bottom:1px solid rgba(0,0,0,.08);margin-bottom:22px}
body[data-theme="dark"] .auth-tabs{border-color:rgba(255,255,255,.1)}
.auth-tab{flex:1;padding:10px 0 13px;font-size:14px;color:#999;font-weight:500;transition:color .25s}
.auth-tab.active{color:var(--text);font-weight:650}
.auth-tab-ink{position:absolute;bottom:-1px;left:0;width:50%;height:2px;background:var(--brand);border-radius:2px;transition:transform .35s var(--ease)}
.auth-tabs[data-mode="register"] .auth-tab-ink{transform:translateX(100%)}
.auth-form{display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:7px}
.field>span{font-size:12px;color:#888;font-weight:500}
.field input{
  width:100%;height:44px;padding:0 14px;border-radius:10px;background:rgba(0,0,0,.04);
  border:1px solid transparent;font-size:14px;transition:.22s var(--ease);
}
body[data-theme="dark"] .field input{background:rgba(255,255,255,.06)}
.field input:focus{background:var(--panel);border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.field input::placeholder{color:#b5b5b5}
.form-error{min-height:16px;margin:-4px 0 0;color:var(--danger);font-size:12px}
.btn-primary{
  height:46px;border-radius:10px;background:var(--brand);color:#fff;font-size:16px;font-weight:600;letter-spacing:1px;
  display:flex;align-items:center;justify-content:center;gap:6px;transition:.2s var(--ease);margin-top:2px;
  box-shadow:0 8px 20px rgba(7,193,96,.22);
}
.btn-primary svg{width:16px;height:16px;transition:transform .25s}
.btn-primary:hover{background:var(--brand-2);transform:translateY(-2px);box-shadow:0 12px 26px rgba(7,193,96,.3)}
.btn-primary:hover svg{transform:translateX(3px)}
.btn-primary:active{transform:scale(.985)}
.btn-primary:disabled{opacity:.6;cursor:wait;transform:none}
.auth-divider{display:flex;align-items:center;gap:12px;margin:24px 0 14px;color:#aaa;font-size:11.5px}
.auth-divider::before,.auth-divider::after{content:"";flex:1;height:1px;background:rgba(0,0,0,.08)}
body[data-theme="dark"] .auth-divider::before,body[data-theme="dark"] .auth-divider::after{background:rgba(255,255,255,.1)}
.demo-row{display:flex;gap:10px}
.demo-btn{
  flex:1;display:flex;align-items:center;gap:9px;padding:9px;border:1px solid rgba(0,0,0,.07);
  border-radius:10px;background:rgba(0,0,0,.02);text-align:left;transition:.2s var(--ease);
}
body[data-theme="dark"] .demo-btn{border-color:rgba(255,255,255,.09);background:rgba(255,255,255,.03)}
.demo-btn:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.demo-btn b{font-size:12.5px;font-weight:600;white-space:nowrap}
.demo-btn small{display:block;color:#aaa;font-size:10.5px;margin-top:1px}
.auth-tip{text-align:center;color:#aaa;font-size:11px;margin:16px 0 0}
.auth-tip code{background:rgba(0,0,0,.06);padding:1px 5px;border-radius:4px;color:var(--brand)}
.auth-foot{position:absolute;bottom:20px;left:0;right:0;text-align:center;color:rgba(255,255,255,.28);font-size:11px;letter-spacing:1px}

/* ================= 应用骨架 ================= */
.app{display:grid;grid-template-columns:64px 300px minmax(0,1fr);height:100dvh;min-height:100dvh;background:var(--bg)}
.app.appearing{animation:appIn .5s var(--ease) both}
@keyframes appIn{from{opacity:0}to{opacity:1}}
.rail{background:var(--rail);display:flex;flex-direction:column;justify-content:space-between;align-items:center;padding:22px 0 18px;z-index:3}
.rail-top,.rail-bottom{display:flex;flex-direction:column;align-items:center;gap:14px}
.rail-avatar{position:relative;margin-bottom:10px;transition:transform .25s var(--ease)}
.rail-avatar:hover{transform:scale(1.08)}
.rail-btn{position:relative;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;color:#8e8f92;transition:.2s var(--ease)}
.rail-btn svg{width:23px;height:23px}
.rail-btn:hover{background:var(--rail-hover);color:#d9d9d9;transform:translateY(-1px)}
.rail-btn.active{color:var(--brand);background:rgba(7,193,96,.13)}
.rail-badge{position:absolute;top:3px;right:3px;min-width:16px;height:16px;padding:0 4px;border-radius:9px;background:var(--danger);color:#fff;font-size:10px;line-height:16px;font-weight:600;display:none;text-align:center}
.rail-badge.show{display:block;animation:pop .3s var(--ease)}
@keyframes pop{from{transform:scale(.4)}to{transform:scale(1)}}

.sidebar{background:var(--sidebar);display:flex;flex-direction:column;min-width:0;border-right:1px solid var(--border);position:relative}
.sidebar-head{height:64px;display:flex;align-items:center;gap:9px;padding:0 12px;flex:none;-webkit-app-region:drag}
.search-box{flex:1;height:30px;display:flex;align-items:center;gap:7px;background:var(--panel);border-radius:6px;padding:0 9px;border:1px solid transparent;transition:.2s}
body[data-theme="dark"] .search-box{background:rgba(255,255,255,.06)}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-soft)}
.search-box svg{width:15px;height:15px;color:var(--text-3)}
.search-box input{flex:1;min-width:0;font-size:12.5px}
.search-box input::placeholder{color:var(--text-3)}
.search-clear svg{width:13px;height:13px;color:var(--text-3)}
.add-btn{width:30px;height:30px;border-radius:6px;background:var(--panel);display:grid;place-items:center;color:var(--text-2);transition:.2s}
body[data-theme="dark"] .add-btn{background:rgba(255,255,255,.06)}
.add-btn:hover{color:var(--brand);background:var(--brand-soft);transform:rotate(90deg)}
.add-btn svg{width:17px;height:17px}
.sidebar-body{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;position:relative}
.sidebar-foot{height:30px;flex:none;display:flex;align-items:center;gap:6px;padding:0 14px;font-size:10.5px;color:var(--text-3);border-top:1px solid var(--border)}
.conn-dot{width:7px;height:7px;border-radius:50%;background:var(--warn);transition:background .3s}
.conn-dot.online{background:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.sidebar-foot-spacer{flex:1}
.brand-mini{color:var(--text-3);letter-spacing:.5px}
.main{min-width:0;min-height:0;background:var(--chat-bg);display:flex;flex-direction:column;position:relative;overflow:hidden}

/* ================= 列表通用 ================= */
.list-section{padding:12px 12px 4px;font-size:11px;color:var(--text-3);font-weight:600;letter-spacing:.3px;display:flex;justify-content:space-between;align-items:center}
.list-item{
  display:flex;align-items:center;gap:11px;padding:11px 12px;cursor:pointer;position:relative;
  transition:background .16s;
}
.sidebar-body.animate .list-item{animation:itemIn .32s var(--ease) both}
@keyframes itemIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.pin-mark{width:11px;height:11px;display:inline-block;vertical-align:-1px;color:var(--brand)}
.moment-comments .mc svg{width:11px;height:11px;display:inline-block;vertical-align:-1px;fill:currentColor}
.msg-row.flash .bubble{animation:flashBubble 1.6s var(--ease)}
@keyframes flashBubble{0%,100%{box-shadow:0 0 0 0 transparent}20%,60%{box-shadow:0 0 0 4px rgba(7,193,96,.35)}}
.list-item:hover{background:var(--hover)}
.list-item.active{background:var(--active)}
.list-item.pinned{background:rgba(7,193,96,.055)}
.list-item .li-main{flex:1;min-width:0}
.list-item .li-top{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.list-item .li-name{font-size:13.5px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-item .li-time{font-size:10.5px;color:var(--text-3);flex:none}
.list-item .li-sub{font-size:11.5px;color:var(--text-3);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-item .li-sub .draft{color:var(--danger)}
.li-avatar{position:relative;flex:none}
.badge-count{
  position:absolute;top:-4px;right:-6px;min-width:17px;height:17px;padding:0 5px;border-radius:9px;
  background:var(--danger);color:#fff;font-size:10.5px;line-height:17px;text-align:center;font-weight:600;
  box-shadow:0 2px 6px rgba(250,81,81,.35);animation:pop .3s var(--ease)
}
.badge-count.mute{background:var(--text-3);box-shadow:none}
.badge-dot{position:absolute;top:-2px;right:-3px;width:9px;height:9px;border-radius:50%;background:var(--danger)}
.li-muted{opacity:.62}
.li-actions{position:absolute;right:8px;top:50%;transform:translateY(-50%);display:flex;gap:3px;opacity:0;transition:.2s}
.list-item:hover .li-actions{opacity:1}
.li-actions button{width:24px;height:24px;border-radius:5px;display:grid;place-items:center;background:var(--panel);color:var(--text-2);box-shadow:0 2px 8px rgba(0,0,0,.1)}
.li-actions button:hover{color:var(--brand)}
.li-actions svg{width:14px;height:14px}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:60px 24px;text-align:center;color:var(--text-3)}
.empty-state svg{width:44px;height:44px;opacity:.35}
.empty-state b{color:var(--text-2);font-size:13px;font-weight:500}
.empty-state small{font-size:11.5px;line-height:1.7}
.search-results{position:absolute;top:56px;left:8px;right:8px;z-index:20;max-height:70%;overflow:auto;background:var(--panel);border-radius:10px;box-shadow:var(--shadow);border:1px solid var(--border);padding:6px}
.sr-group{font-size:10.5px;color:var(--text-3);padding:8px 10px 4px;font-weight:600}
.sr-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:7px;cursor:pointer;font-size:12.5px}
.sr-item:hover{background:var(--hover)}
.sr-item .sr-sub{color:var(--text-3);font-size:11px;margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:210px}

/* ================= 聊天区 ================= */
.chat-wrap{display:flex;flex-direction:column;height:100%;min-height:0;animation:chatIn .3s var(--ease)}
@keyframes chatIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.chat-head{height:64px;flex:none;display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:1px solid var(--border);background:var(--chat-bg);z-index:2}
.chat-head-left{display:flex;align-items:center;gap:10px;min-width:0}
.back-btn{display:none;width:30px;height:30px;place-items:center;color:var(--text-2)}
.chat-title{font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60vw}
.chat-sub{display:block;font-size:11px;font-weight:400;color:var(--text-3);margin-top:2px}
.chat-sub .online{color:var(--brand)}
.chat-actions{display:flex;gap:4px}
.icon-btn{width:34px;height:34px;border-radius:8px;display:grid;place-items:center;color:var(--text-2);transition:.18s}
.icon-btn:hover{background:var(--hover);color:var(--brand)}
.icon-btn svg{width:19px;height:19px}
.msg-scroll{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;padding:18px 26px 8px;scroll-behavior:smooth}
.msg-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:2px}
.load-more{display:block;margin:0 auto 16px;font-size:11.5px;color:var(--blue);padding:5px 12px}
.load-more:hover{text-decoration:underline}
.time-divider{text-align:center;margin:14px 0 10px;font-size:11px;color:var(--text-3);animation:fadeIn .3s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.sys-msg{text-align:center;margin:8px 0;font-size:11.5px;color:var(--text-3)}
.sys-msg span{background:var(--hover);padding:4px 12px;border-radius:5px}
.msg-row{display:flex;gap:10px;align-items:flex-start;padding:6px 0;animation:msgIn .32s var(--ease) both}
@keyframes msgIn{from{opacity:0;transform:translateY(9px) scale(.98)}to{opacity:1;transform:none}}
.msg-row.mine{flex-direction:row-reverse}
.msg-row .avatar{width:36px;height:36px;font-size:14px;border-radius:5px}
.msg-col{max-width:min(72%,620px);min-width:0;display:flex;flex-direction:column}
.msg-row.mine .msg-col{align-items:flex-end}
.msg-sender{font-size:11px;color:var(--text-3);margin:0 0 4px 2px}
.bubble{
  position:relative;padding:9px 13px;border-radius:7px;background:var(--bubble-other);
  font-size:14px;line-height:1.62;word-break:break-word;white-space:pre-wrap;
  box-shadow:0 1px 2px rgba(0,0,0,.05);transition:transform .16s,box-shadow .16s;
}
body[data-theme="dark"] .bubble{box-shadow:none}
.msg-row.mine .bubble{background:var(--bubble-me)}
.bubble::before{content:"";position:absolute;top:12px;left:-5px;width:0;height:0;border:5px solid transparent;border-right-color:var(--bubble-other);border-left:0}
.msg-row.mine .bubble::before{left:auto;right:-5px;border-right-color:transparent;border-left-color:var(--bubble-me);border-right:0}
.bubble:hover{box-shadow:0 3px 12px rgba(0,0,0,.1)}
.bubble.revoked{background:transparent !important;box-shadow:none;color:var(--text-3);font-size:11.5px;text-align:center;padding:4px 0}
.bubble.revoked::before{display:none}
.bubble .quote{background:var(--hover);border-left:2px solid var(--brand);border-radius:3px;padding:5px 8px;margin-bottom:6px;font-size:11.5px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:340px}
.bubble .chat-img{max-width:260px;max-height:320px;border-radius:6px;display:block;cursor:zoom-in;object-fit:cover;background:var(--hover)}
.bubble.sticker{font-size:44px;line-height:1.2;padding:6px 10px;background:transparent !important;box-shadow:none}
.bubble.sticker::before{display:none}
.file-card{display:flex;align-items:center;gap:11px;min-width:210px;padding:4px 2px;text-decoration:none;color:inherit}
.file-ic{width:40px;height:40px;border-radius:7px;display:grid;place-items:center;background:var(--panel);color:var(--brand);border:1px solid var(--border)}
.file-ic svg{width:22px;height:22px}
.file-card b{display:block;font-size:12.5px;font-weight:500;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-card small{display:block;font-size:10.5px;color:var(--text-3);margin-top:3px}
.msg-status{font-size:10px;color:var(--text-3);margin:3px 2px 0;display:flex;align-items:center;gap:4px}
.msg-status .sending{color:var(--warn)}
.msg-status .failed{color:var(--danger);cursor:pointer}
.typing-hint{height:20px;max-width:900px;margin:0 auto;font-size:11.5px;color:var(--brand);padding-left:46px;transition:opacity .2s}
.typing-hint:not(.show){opacity:0}
.typing-dots{display:inline-flex;gap:2px;vertical-align:middle;margin-right:5px}
.typing-dots i{width:4px;height:4px;border-radius:50%;background:var(--brand);animation:dots 1.2s infinite}
.typing-dots i:nth-child(2){animation-delay:.18s}.typing-dots i:nth-child(3){animation-delay:.36s}
@keyframes dots{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}

/* 输入区 */
.composer{flex:none;border-top:1px solid var(--border);background:var(--chat-bg);padding:0 20px 12px;position:relative}
.composer-tools{display:flex;align-items:center;gap:2px;height:42px}
.tool-btn{width:32px;height:32px;border-radius:7px;display:grid;place-items:center;color:var(--text-2);transition:.18s}
.tool-btn:hover{background:var(--hover);color:var(--brand);transform:translateY(-1px)}
.tool-btn.active{color:var(--brand);background:var(--brand-soft)}
.tool-btn svg{width:20px;height:20px}
.composer-tools .spacer{flex:1}
.composer-hint{font-size:10.5px;color:var(--text-3)}
#msg-input{width:100%;height:88px;resize:none;font-size:14px;line-height:1.7;color:var(--text);background:transparent;padding:0 2px}
#msg-input::placeholder{color:var(--text-3)}
.composer-foot{display:flex;align-items:center;justify-content:flex-end;gap:14px;margin-top:2px}
.composer-foot>span{font-size:11px;color:var(--text-3);margin-right:auto}
.send-btn{height:32px;min-width:76px;padding:0 18px;border-radius:6px;background:var(--panel);border:1px solid var(--border);font-size:12.5px;color:var(--text-2);transition:.2s var(--ease)}
.send-btn.ready{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(7,193,96,.2)}
.send-btn.ready:hover{background:var(--brand-2);transform:translateY(-1px)}
.send-btn:active{transform:scale(.96)}
.reply-bar{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--border);border-radius:7px;padding:7px 10px;margin-bottom:6px;font-size:11.5px;color:var(--text-2);animation:fadeUp .25s var(--ease)}
.reply-bar b{color:var(--brand)}
.reply-bar span{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.reply-bar button svg{width:14px;height:14px}
.emoji-panel{
  position:absolute;bottom:calc(100% + 8px);left:14px;width:324px;padding:12px;
  background:var(--panel);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);
  z-index:15;animation:panelIn .22s var(--ease);
}
@keyframes panelIn{from{opacity:0;transform:translateY(8px) scale(.97)}to{opacity:1;transform:none}}
.emoji-panel h5{margin:0 0 9px;font-size:11px;color:var(--text-3);font-weight:600}
.emoji-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:2px}
.emoji-grid button{height:36px;border-radius:7px;font-size:22px;line-height:1;transition:.15s}
.emoji-grid button:hover{background:var(--hover);transform:scale(1.22)}
.drop-hint{position:fixed;inset:0;z-index:80;background:rgba(7,193,96,.1);backdrop-filter:blur(3px);display:grid;place-items:center;pointer-events:none}
.drop-hint>div{border:2px dashed var(--brand);border-radius:18px;padding:48px 70px;background:var(--panel);display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--brand);box-shadow:var(--shadow)}
.drop-hint svg{width:42px;height:42px}

/* ================= 通讯录 / 通用面板 ================= */
.panel-wrap{height:100%;overflow:auto;padding:22px 30px 40px;animation:chatIn .3s var(--ease)}
.panel-inner{max-width:760px;margin:0 auto}
.panel-title{font-size:19px;font-weight:650;margin:0 0 4px}
.panel-desc{color:var(--text-3);font-size:12px;margin:0 0 24px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.card+.card{margin-top:16px}
.card-head{padding:14px 18px;border-bottom:1px solid var(--border);font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:space-between}
.card-row{display:flex;align-items:center;gap:12px;padding:13px 18px;border-bottom:1px solid var(--border-2);transition:background .16s}
.card-row:last-child{border-bottom:0}
.card-row.click{cursor:pointer}
.card-row.click:hover{background:var(--hover)}
.card-row .cr-main{flex:1;min-width:0}
.card-row .cr-main b{font-size:13.5px;font-weight:500;display:block}
.card-row .cr-main small{font-size:11.5px;color:var(--text-3);display:block;margin-top:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cr-actions{display:flex;gap:7px}
.mini-btn{height:28px;padding:0 13px;border-radius:6px;background:var(--brand);color:#fff;font-size:12px;transition:.18s}
.mini-btn:hover{background:var(--brand-2);transform:translateY(-1px)}
.mini-btn.ghost{background:var(--hover);color:var(--text-2)}
.mini-btn.ghost:hover{background:var(--active);color:var(--text)}
.mini-btn.danger{background:rgba(250,81,81,.12);color:var(--danger)}
.mini-btn svg{width:14px;height:14px;vertical-align:-2px;margin-right:3px}
.profile-card{display:flex;align-items:center;gap:20px;padding:24px;background:var(--panel);border:1px solid var(--border);border-radius:12px;margin-bottom:18px}
.profile-card .pc-info{flex:1;min-width:0}
.profile-card h3{margin:0 0 5px;font-size:20px}
.profile-card p{margin:0;color:var(--text-3);font-size:12.5px;line-height:1.7}
.profile-card .pc-id{color:var(--text-3);font-size:11.5px;margin-top:8px}
.form-grid{display:grid;gap:14px;padding:18px}
.form-grid label{display:flex;flex-direction:column;gap:6px;font-size:12px;color:var(--text-2)}
.form-grid input,.form-grid textarea,.modal-input{height:38px;padding:0 12px;border-radius:7px;background:var(--panel-2);border:1px solid var(--border);font-size:13px;transition:.2s}
.form-grid textarea{height:70px;padding:9px 12px;resize:vertical;line-height:1.6}
.form-grid input:focus,.form-grid textarea:focus,.modal-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.avatar-picker{display:flex;gap:9px;flex-wrap:wrap;padding:0 18px 18px}
.avatar-picker button{width:34px;height:34px;border-radius:8px;transition:.18s;position:relative}
.avatar-picker button:hover{transform:translateY(-3px)}
.avatar-picker button.sel::after{content:"";position:absolute;inset:-3px;border:2px solid var(--brand);border-radius:10px}
.setting-row{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--border-2)}
.setting-row:last-child{border-bottom:0}
.setting-row .sr-main{flex:1}
.setting-row .sr-main b{font-size:13px;font-weight:500;display:block}
.setting-row .sr-main small{font-size:11.5px;color:var(--text-3);margin-top:3px;display:block}
.switch{width:38px;height:22px;border-radius:12px;background:var(--border);position:relative;transition:.25s;flex:none}
.switch::after{content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:.25s var(--ease)}
.switch.on{background:var(--brand)}
.switch.on::after{transform:translateX(16px)}

/* ================= 朋友圈 ================= */
.moments-wrap{height:100%;overflow-y:auto;background:var(--chat-bg)}
.moments-cover{
  height:190px;background:linear-gradient(120deg,#0e2a34,#16483f 45%,#1d5c46 75%,#0b7a4b);
  position:relative;overflow:visible;
}
.moments-cover::after{content:"✦ ✧ ✦  ✧ ✦";position:absolute;top:22px;left:40px;color:rgba(255,255,255,.5);font-size:20px;letter-spacing:12px;animation:floaty 6s ease-in-out infinite}
.moments-cover .cover-text{position:absolute;bottom:28px;left:40px;color:#fff}
.moments-cover .cover-text h2{margin:0;font-size:22px;letter-spacing:1px}
.moments-cover .cover-text p{margin:6px 0 0;font-size:12px;color:rgba(255,255,255,.7)}
.moments-me{position:absolute;right:40px;bottom:-30px;display:flex;align-items:flex-end;gap:12px}
.moments-me b{color:#fff;text-shadow:0 1px 6px rgba(0,0,0,.5);font-size:14px;margin-bottom:38px}
.moments-me .avatar{width:66px;height:66px;border:3px solid rgba(255,255,255,.85);border-radius:9px;font-size:24px}
.moments-list{max-width:660px;margin:0 auto;padding:56px 24px 50px}
.moment-post{
  display:flex;gap:14px;padding:20px 0;border-bottom:1px solid var(--border);animation:itemIn .4s var(--ease) both;
}
.moment-body{flex:1;min-width:0}
.moment-body .m-name{color:var(--blue);font-size:13.5px;font-weight:600}
.moment-body .m-text{font-size:14px;line-height:1.7;margin:6px 0 10px;white-space:pre-wrap;word-break:break-word}
.moment-body .m-img{max-width:260px;max-height:260px;border-radius:7px;cursor:zoom-in;display:block;object-fit:cover}
.moment-foot{display:flex;align-items:center;gap:14px;margin-top:10px;color:var(--text-3);font-size:11.5px}
.moment-foot button{display:flex;align-items:center;gap:4px;color:var(--text-3);transition:.18s;font-size:11.5px}
.moment-foot button:hover,.moment-foot button.liked{color:var(--danger)}
.moment-foot button.liked svg{fill:var(--danger)}
.moment-foot svg{width:15px;height:15px}
.moment-comments{background:var(--panel-2);border-radius:7px;padding:8px 11px;margin-top:10px}
.moment-comments .mc{font-size:12.5px;line-height:1.7}
.moment-comments .mc b{color:var(--blue);font-weight:500}
.moment-comment-input{display:flex;gap:8px;margin-top:9px}
.moment-comment-input input{flex:1;height:30px;padding:0 10px;border-radius:6px;background:var(--panel);border:1px solid var(--border);font-size:12px}
.moment-comment-input button{color:var(--brand);font-size:12px;font-weight:600}
.publish-fab{position:absolute;right:24px;top:22px;z-index:5;display:flex;align-items:center;gap:7px;height:36px;padding:0 15px;border-radius:18px;background:var(--panel);color:var(--brand);box-shadow:var(--shadow);font-size:12.5px;font-weight:600;transition:.2s}
.publish-fab:hover{transform:translateY(-2px)}
.publish-fab svg{width:16px;height:16px}

/* ================= 弹层 / 菜单 / Toast ================= */
.modal-root{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.4);backdrop-filter:blur(3px);display:grid;place-items:center;padding:20px;animation:fadeIn .2s}
.modal{width:min(480px,100%);max-height:min(86vh,760px);display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--border);border-radius:14px;box-shadow:0 24px 70px rgba(0,0,0,.3);overflow:hidden;animation:modalIn .3s var(--ease)}
@keyframes modalIn{from{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:none}}
.modal-head{height:56px;flex:none;display:flex;align-items:center;justify-content:space-between;padding:0 20px;border-bottom:1px solid var(--border)}
.modal-head h3{margin:0;font-size:15px;font-weight:600}
.modal-body{flex:1;min-height:0;overflow:auto;padding:16px 20px}
.modal-foot{flex:none;display:flex;justify-content:flex-end;gap:9px;padding:14px 20px;border-top:1px solid var(--border)}
.modal-search{display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;margin-bottom:12px}
.modal-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.modal-search svg{width:16px;height:16px;color:var(--text-3)}
.modal-search input{flex:1;min-width:0;font-size:13px}
.modal-list{display:flex;flex-direction:column;gap:3px}
.modal-user{display:flex;align-items:center;gap:11px;padding:9px 10px;border-radius:8px;cursor:pointer;transition:.16s}
.modal-user:hover{background:var(--hover)}
.modal-user.selected{background:var(--brand-soft)}
.modal-user .mu-main{flex:1;min-width:0}
.modal-user .mu-main b{font-size:13px;font-weight:500;display:block}
.modal-user .mu-main small{font-size:11px;color:var(--text-3);display:block;margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.modal-check{width:18px;height:18px;border:1.5px solid var(--border);border-radius:50%;display:grid;place-items:center;flex:none;transition:.16s}
.modal-check svg{width:12px;height:12px;color:#fff;opacity:0}
.modal-user.selected .modal-check{background:var(--brand);border-color:var(--brand)}
.modal-user.selected .modal-check svg{opacity:1}
.modal-tip{font-size:11.5px;color:var(--text-3);line-height:1.7;margin:10px 2px}
.ctxmenu{position:fixed;z-index:110;min-width:140px;background:var(--panel);border:1px solid var(--border);border-radius:9px;box-shadow:var(--shadow);padding:5px;animation:panelIn .16s var(--ease)}
.ctxmenu button{display:flex;align-items:center;gap:9px;width:100%;padding:8px 10px;border-radius:6px;font-size:12.5px;color:var(--text);text-align:left;transition:.14s}
.ctxmenu button:hover{background:var(--hover);color:var(--brand)}
.ctxmenu button.danger:hover{color:var(--danger)}
.ctxmenu svg{width:15px;height:15px}
.ctxmenu hr{border:0;border-top:1px solid var(--border);margin:4px 2px}
.lightbox{position:fixed;inset:0;z-index:120;background:rgba(0,0,0,.88);display:grid;place-items:center;animation:fadeIn .2s;cursor:zoom-out}
.lightbox img{max-width:92vw;max-height:90vh;object-fit:contain;border-radius:6px;box-shadow:0 20px 60px rgba(0,0,0,.6);animation:modalIn .3s var(--ease)}
.lightbox>button{position:absolute;top:22px;right:26px;width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.14);display:grid;place-items:center;color:#fff}
.lightbox>button:hover{background:rgba(255,255,255,.28)}
.toast-root{position:fixed;top:22px;left:50%;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none}
.toast{padding:10px 18px;border-radius:9px;background:rgba(30,32,34,.94);color:#fff;font-size:12.5px;box-shadow:0 8px 28px rgba(0,0,0,.25);animation:toastIn .3s var(--ease);display:flex;align-items:center;gap:8px;max-width:80vw}
.toast.success{border-left:3px solid var(--brand)}
.toast.error{border-left:3px solid var(--danger)}
.toast svg{width:16px;height:16px;color:var(--brand)}
.toast.error svg{color:var(--danger)}
@keyframes toastIn{from{opacity:0;transform:translateY(-14px)}to{opacity:1;transform:none}}
.toast.out{animation:toastOut .25s var(--ease) forwards}
@keyframes toastOut{to{opacity:0;transform:translateY(-10px)}}
.center-empty{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--text-3)}
.center-empty .ce-logo{width:74px;height:74px;border-radius:20px;display:grid;place-items:center;background:var(--panel);box-shadow:var(--shadow)}
.center-empty .ce-logo svg{width:38px;height:38px;fill:var(--brand);stroke:none;opacity:.85}
.center-empty b{font-size:15px;color:var(--text-2);font-weight:500}
.center-empty small{font-size:12px;line-height:1.8;text-align:center}

/* ================= 响应式 ================= */
@media (max-width:1100px){.app{grid-template-columns:60px 270px minmax(0,1fr)}.msg-scroll{padding:14px 18px 6px}}
@media (max-width:860px){
  .auth-inner{grid-template-columns:1fr;gap:0;max-width:420px}
  .auth-hero{display:none}
  .app{grid-template-columns:58px minmax(0,1fr);position:relative}
  .sidebar{grid-column:2;grid-row:1;border-right:0}
  .main{grid-column:2;grid-row:1;z-index:4;transform:translateX(102%);transition:transform .3s var(--ease);box-shadow:-10px 0 30px rgba(0,0,0,.15)}
  .app.show-detail .main{transform:translateX(0)}
  .back-btn{display:grid}
  .chat-head{padding:0 12px}
  .msg-scroll{padding:12px 12px 4px}
  .composer{padding:0 12px 10px}
  .msg-col{max-width:80%}
  .panel-wrap{padding:18px 16px 40px}
  .moments-cover{height:150px}.moments-cover .cover-text{left:20px}.moments-me{right:18px}
  .publish-fab{top:16px;right:14px}
  .moments-cover::after{left:20px;top:20px;font-size:15px;letter-spacing:8px}
  .sidebar-foot{display:none}
}
@media (max-width:520px){
  .app{grid-template-columns:0 minmax(0,1fr)}
  .rail{position:fixed;bottom:0;left:0;right:0;height:58px;flex-direction:row;padding:0 10px;z-index:10;border-top:1px solid var(--border)}
  .rail-top,.rail-bottom{flex-direction:row;gap:4px}
  .rail-avatar{display:none}
  .rail-btn{width:46px;height:46px}
  .sidebar{grid-column:1 / -1;padding-bottom:58px}
  .main{grid-column:1 / -1;padding-bottom:0}
  .sidebar-foot{display:none}
  .chat-head,.composer,.msg-scroll{padding-left:10px;padding-right:10px}
  .emoji-panel{width:calc(100vw - 24px);left:0}
  .demo-row{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}}