:root{
  --navy:#0A1940;--navy2:#13245a;--gold:#FCB707;--bg:#F4F6FB;--card:#fff;--line:#E3E7F0;
  --text:#14182b;--muted:#6B7280;--green:#16A34A;--red:#DC2626;--chat:#E9EDF5;--out:#DCF8C6;
  --r:14px;--sh:0 1px 3px rgba(10,25,64,.08),0 4px 14px rgba(10,25,64,.06);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);
  font:15px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-text-size-adjust:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:var(--navy2)}
.hide{display:none!important}
.boot{display:flex;align-items:center;justify-content:center;height:100vh}
.spin{width:34px;height:34px;border:3px solid #cdd3e3;border-top-color:var(--navy);border-radius:50%;animation:sp 0.8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* buttons & inputs */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:10px;
  padding:10px 14px;background:var(--navy);color:#fff;font-weight:600;min-height:42px}
.btn:disabled{opacity:.55;cursor:default}
.btn.gold{background:var(--gold);color:var(--navy)}
.btn.ghost{background:transparent;color:var(--navy);border:1px solid var(--line)}
.btn.red{background:#fff;color:var(--red);border:1px solid #f3c4c4}
.btn.sm{padding:6px 10px;min-height:34px;font-size:13px;border-radius:8px}
.btn.icon{width:40px;height:40px;padding:0;min-height:0;background:transparent;color:#fff;font-size:19px}
.inp,select.inp,textarea.inp{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:#fff;min-height:42px}
.inp:focus{outline:2px solid #c9d3f0;border-color:var(--navy2)}
textarea.inp{resize:vertical;min-height:80px}
label.f{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin:12px 0 5px}
.row{display:flex;gap:10px;align-items:center}
.row>*{flex:1}
.muted{color:var(--muted)}
.small{font-size:12.5px}

/* login */
.login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;
  background:linear-gradient(160deg,var(--navy) 0%,var(--navy2) 60%,#1d3480 100%)}
.login .box{width:100%;max-width:380px;background:#fff;border-radius:18px;padding:26px 22px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.login h1{margin:8px 0 2px;font-size:22px;color:var(--navy)}
.login .logo{width:52px;height:52px}
.err{color:var(--red);font-size:13.5px;margin-top:10px;min-height:18px}

/* shell */
.top{position:sticky;top:0;z-index:20;background:var(--navy);color:#fff;display:flex;align-items:center;gap:8px;
  padding:8px 10px;padding-top:max(8px,env(safe-area-inset-top))}
.top .brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:17px;flex:1;min-width:0;white-space:nowrap}
.top .brand img{width:30px;height:30px}
.top .brand b{color:var(--gold)}
.tabs{display:flex;gap:4px;background:rgba(255,255,255,.1);border-radius:10px;padding:3px}
.tabs button{border:0;background:transparent;color:#cfd6ea;padding:6px 11px;border-radius:8px;font-weight:600;font-size:14px}
.tabs button.on{background:var(--gold);color:var(--navy)}

.wrap{display:flex;height:calc(100vh - 56px);height:calc(100dvh - 56px)}
.list{width:100%;display:flex;flex-direction:column;min-width:0}
.detail{display:none}
@media(min-width:900px){
  .list{width:380px;border-right:1px solid var(--line);flex:none}
  .detail{display:flex;flex:1;min-width:0;flex-direction:column;background:#fff}
  .detail .back{display:none}
  .empty-detail{flex:1;display:flex;align-items:center;justify-content:center;color:var(--muted)}
}
@media(max-width:899px){
  .detail.open{display:flex;position:fixed;inset:0;z-index:40;background:#fff;flex-direction:column}
}

/* list */
.lhead{padding:10px 10px 6px;background:var(--bg)}
.search{display:flex;gap:8px}
.chips{display:flex;gap:6px;overflow-x:auto;padding:8px 0 4px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:5px 11px;font-size:13px;font-weight:600;color:#394056;white-space:nowrap}
.chip.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.chip .n{opacity:.7;margin-left:3px}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:5px;vertical-align:middle}
.items{flex:1;overflow-y:auto;padding:4px 8px 90px}
.item{display:flex;gap:10px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:10px;margin:6px 0;cursor:pointer}
.item:hover{border-color:#c5cde0}
.item.sel{border-color:var(--navy2);box-shadow:0 0 0 2px #dfe5f5}
.av{flex:none;width:42px;height:42px;border-radius:50%;background:#e8ecf7;color:var(--navy);display:flex;align-items:center;justify-content:center;font-weight:700}
.item .mid{flex:1;min-width:0}
.item .nm{font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item .lm{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item .rt{text-align:right;flex:none;display:flex;flex-direction:column;align-items:flex-end;gap:4px}
.item .tm{font-size:11.5px;color:var(--muted)}
.badge{background:var(--green);color:#fff;border-radius:999px;font-size:11px;font-weight:700;padding:1px 7px;min-width:20px;text-align:center}
.pill{display:inline-block;font-size:11.5px;font-weight:700;border-radius:999px;padding:2px 8px;color:#fff;white-space:nowrap}
.src{font-size:11.5px;color:var(--muted)}
.fu{font-size:11.5px;font-weight:600;color:#b45309}
.fu.late{color:var(--red)}
.fab{position:fixed;right:16px;bottom:max(18px,env(safe-area-inset-bottom));z-index:30;border-radius:999px;box-shadow:0 8px 20px rgba(10,25,64,.3);padding:12px 18px}
@media(min-width:900px){.fab{left:270px;right:auto}}
.none{text-align:center;color:var(--muted);padding:40px 10px}

/* detail */
.dh{display:flex;align-items:center;gap:10px;padding:10px;padding-top:max(10px,env(safe-area-inset-top));background:var(--navy);color:#fff}
.dh .av{background:var(--gold)}
.dh .who{flex:1;min-width:0}
.dh .who b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dh .who span{font-size:12.5px;opacity:.85}
.dh a.btn{color:#fff;text-decoration:none}
.dtabs{display:flex;border-bottom:1px solid var(--line);background:#fff}
.dtabs button{flex:1;border:0;background:transparent;padding:11px;font-weight:650;color:var(--muted);border-bottom:3px solid transparent}
.dtabs button.on{color:var(--navy);border-bottom-color:var(--gold)}
.stagebar{display:flex;gap:6px;overflow-x:auto;padding:8px 10px;background:#fbfcfe;border-bottom:1px solid var(--line);scrollbar-width:none}
.stagebar::-webkit-scrollbar{display:none}
.stagebar button{flex:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:5px 11px;font-size:12.5px;font-weight:650}
.stagebar button.on{color:#fff;border-color:transparent}

.chat{flex:1;overflow-y:auto;padding:12px;background:var(--chat)}
.msg{max-width:82%;width:fit-content;margin:4px 0;padding:7px 10px 5px;border-radius:12px;background:#fff;box-shadow:0 1px 1px rgba(0,0,0,.06);word-wrap:break-word}
.msg .tx{white-space:pre-wrap}
.msg.out{margin-left:auto;background:var(--out)}
.msg .meta{font-size:11px;color:var(--muted);text-align:right;margin-top:2px}
.msg.fail{background:#fde8e8}
.msg .media{font-size:13px;font-weight:600}
.day{text-align:center;margin:10px 0}
.day span{background:#fff;border-radius:8px;padding:3px 10px;font-size:12px;color:var(--muted)}
.tick{letter-spacing:-3px;margin-left:3px}
.tick.read{color:#34B7F1}
.composer{display:flex;gap:8px;padding:8px;padding-bottom:max(8px,env(safe-area-inset-bottom));border-top:1px solid var(--line);background:#fff;align-items:flex-end}
.composer textarea{flex:1;min-height:42px;max-height:140px;resize:none}
.notice{padding:10px 12px;background:#FFF7E0;color:#7a5600;font-size:13px;border-top:1px solid #f5e2a8}

.pane{flex:1;overflow-y:auto;padding:12px 14px 40px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:14px;margin-bottom:12px;box-shadow:var(--sh)}
.card h3{margin:0 0 6px;font-size:15.5px;color:var(--navy)}
.tl{list-style:none;margin:0;padding:0}
.tl li{padding:7px 0;border-bottom:1px dashed var(--line);font-size:13.5px}
.tl li:last-child{border:0}
.tl time{display:block;font-size:11.5px;color:var(--muted)}

/* settings */
.settings{flex:1;overflow-y:auto;padding:12px;max-width:760px;margin:0 auto;width:100%}
.stat{display:flex;justify-content:space-between;gap:8px;padding:7px 0;border-bottom:1px dashed var(--line);font-size:14px}
.stat:last-child{border:0}
.ok{color:var(--green);font-weight:700}
.no{color:var(--red);font-weight:700}
.linkrow{border:1px solid var(--line);border-radius:10px;padding:10px;margin:8px 0}
.linkrow code{display:block;font-size:12px;word-break:break-all;background:#f6f8fc;border-radius:8px;padding:7px;margin:6px 0}
.stg{display:grid;grid-template-columns:34px 1fr 1fr auto;gap:6px;align-items:center;margin:6px 0}
.stg input[type=color]{width:34px;height:38px;border:1px solid var(--line);border-radius:8px;padding:2px;background:#fff}
.stg .mv{display:flex;gap:3px}
@media(max-width:560px){.stg{grid-template-columns:34px 1fr auto;padding-bottom:8px;border-bottom:1px dashed var(--line)}.stg .mv{grid-row:1;grid-column:3}.stg select{grid-column:1/4}}
.switch{display:flex;align-items:center;gap:10px;font-weight:650}
.switch input{width:46px;height:26px;appearance:none;background:#cfd5e3;border-radius:999px;position:relative;cursor:pointer;transition:.2s}
.switch input:checked{background:var(--green)}
.switch input::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:.2s}
.switch input:checked::after{left:23px}

/* modal */
.modal{position:fixed;inset:0;z-index:60;background:rgba(10,25,64,.45);display:flex;align-items:flex-end;justify-content:center}
.modal .sheet{background:#fff;width:100%;max-width:480px;border-radius:18px 18px 0 0;padding:18px;padding-bottom:max(18px,env(safe-area-inset-bottom));max-height:92vh;overflow-y:auto}
@media(min-width:600px){.modal{align-items:center}.modal .sheet{border-radius:18px}}
.sheet h2{margin:0 0 4px;font-size:18px;color:var(--navy)}
.acts{display:flex;gap:10px;margin-top:16px}
.acts .btn{flex:1}

.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%) translateY(20px);background:#1f2937;color:#fff;
  padding:10px 16px;border-radius:10px;font-size:14px;opacity:0;pointer-events:none;transition:.25s;z-index:100;max-width:90vw;text-align:center}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.bad{background:var(--red)}

@media(max-width:420px){.top .brand span{font-size:15px}.tabs button{padding:6px 8px;font-size:13px}}