:root{
  --bg:#0f1115; --panel:#171b22; --panel2:#1d222b; --line:#2a3140;
  --text:#e6e9ef; --muted:#8b95a7; --accent:#4f8cff; --accent2:#7aa8ff;
  --ok:#34c98e; --danger:#ff5d6c; --warn:#ffb84d;
  --radius:12px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:var(--bg); color:var(--text);
  font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
.app{max-width:1180px;margin:0 auto;padding:18px 20px 40px;min-height:100vh;display:flex;flex-direction:column;gap:16px}
.top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px}
.logo{font-size:34px;filter:saturate(1.2)}
h1{font-size:22px;font-weight:700;letter-spacing:.2px}
.tag{color:var(--muted);font-size:12.5px}
.stats{color:var(--muted);font-size:12px;background:var(--panel);border:1px solid var(--line);padding:6px 12px;border-radius:999px}
.grid{display:grid;grid-template-columns:340px 1fr;gap:16px;flex:1;min-height:0}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;display:flex;flex-direction:column;gap:12px;min-height:0}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
h2{font-size:15px;font-weight:650}
.row{display:flex;gap:8px;flex-wrap:wrap}
.btn{
  background:var(--panel2);color:var(--text);border:1px solid var(--line);
  padding:7px 13px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;
  transition:background .15s,border-color .15s,transform .05s;
}
.btn:hover:not(:disabled){background:#232a37;border-color:#39425a}
.btn:active:not(:disabled){transform:translateY(1px)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover:not(:disabled){background:var(--accent2);border-color:var(--accent2)}
.btn.danger{color:var(--danger);border-color:#46262b}
.btn.danger:hover:not(:disabled){background:#2c1a1e;border-color:#6e2f37}
.btn.ghost{background:transparent}
.hidden{display:none !important}
.new-box{background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:12px;display:flex;flex-direction:column;gap:10px}
.new-box input,.searchbox input{
  width:100%;background:#101319;border:1px solid var(--line);color:var(--text);
  padding:9px 11px;border-radius:8px;font-size:13.5px;outline:none;
}
.new-box input:focus,.searchbox input:focus{border-color:var(--accent)}
.hint{color:var(--muted);font-size:11.5px}
.hint.err{color:var(--danger)}
.searchbox{padding:0}
.addr-list,.msg-list{list-style:none;overflow-y:auto;flex:1;min-height:0;display:flex;flex-direction:column;gap:6px}
.addr-item{
  background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:10px 12px;
  cursor:pointer;display:flex;flex-direction:column;gap:3px;transition:border-color .12s,background .12s;
}
.addr-item:hover{border-color:#39425a}
.addr-item.active{border-color:var(--accent);background:#1b2333}
.addr-item .a{font-weight:650;font-size:13.5px;font-variant-numeric:tabular-nums;word-break:break-all}
.addr-item .m{color:var(--muted);font-size:11.5px;display:flex;gap:8px;flex-wrap:wrap}
.badge{background:#24345a;color:var(--accent2);border-radius:999px;padding:1px 8px;font-size:11px;font-weight:700}
.badge.new{background:#123b2c;color:var(--ok)}
.empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--muted);text-align:center;padding:40px 20px}
.empty .big{font-size:44px}
.empty .sub{font-size:12.5px;color:#6b7484}
.msg-item{background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:11px 13px;cursor:pointer;display:flex;flex-direction:column;gap:4px}
.msg-item:hover{border-color:#39425a}
.msg-item .s{font-weight:650;font-size:13.5px;word-break:break-word}
.msg-item .f{color:var(--muted);font-size:11.5px}
.msg-item .t{color:var(--muted);font-size:11.5px;font-variant-numeric:tabular-nums}
.msg-item .att{color:var(--warn);font-size:11.5px}
.msg-view{flex:1;overflow-y:auto;min-height:0}
.msg-view .hd{border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:12px;display:flex;flex-direction:column;gap:6px}
.msg-view .subj{font-size:17px;font-weight:700}
.msg-view .meta{color:var(--muted);font-size:12px}
.msg-view .meta b{color:var(--text);font-weight:600}
.msg-view .body{white-space:pre-wrap;word-break:break-word;font-size:13.5px;background:#101319;border:1px solid var(--line);border-radius:10px;padding:14px}
.msg-view .body iframe{width:100%;min-height:320px;border:0;border-radius:8px;background:#fff}
.msg-view .att-list{display:flex;flex-direction:column;gap:6px;margin-top:12px}
.msg-view .att-list a{background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:8px 12px;color:var(--accent2);text-decoration:none;font-size:13px;display:flex;justify-content:space-between;gap:10px}
.msg-view .att-list a:hover{border-color:var(--accent)}
.msg-view .att-list .sz{color:var(--muted);font-size:11.5px}
.back{margin-bottom:12px}
.bottom{color:var(--muted);font-size:11.5px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.sep{width:1px;height:12px;background:var(--line)}
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%);
  background:#233048;color:#eef2fa;border:1px solid #3a4a68;padding:10px 18px;border-radius:10px;
  font-size:13px;font-weight:600;box-shadow:0 8px 30px rgba(0,0,0,.45);z-index:50;
  animation:pop .25s ease;
}
@keyframes pop{from{opacity:0;transform:translate(-50%,10px)}to{opacity:1;transform:translate(-50%,0)}}
@media (max-width:860px){
  .grid{grid-template-columns:1fr}
  .addresses{max-height:46vh}
}