:root{--bg:#0b0d11;--side:#11151b;--panel:#171c24;--panel2:#202733;--text:#f4f6f8;--muted:#8e99a8;--red:#d62828;--line:rgba(255,255,255,.08);--green:#39d98a}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--text)}
button,input,textarea,select{font:inherit}.auth-page{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 85% 5%,rgba(214,40,40,.18),transparent 30%),#0b0d11}
.auth-card,.panel{width:min(100%,560px);background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:30px}.logo{width:58px;height:58px;border-radius:17px;background:var(--red);display:grid;place-items:center;font-weight:800}.logo.sm{width:42px;height:42px;border-radius:12px;font-size:13px}
.form{display:grid;gap:15px}.form label{display:grid;gap:7px;color:#d8dee6}.form input,.form select,.search input{min-height:46px;border:1px solid var(--line);background:#0e1217;color:white;border-radius:12px;padding:0 13px}.btn{min-height:48px;border:0;border-radius:12px;background:var(--red);color:#fff;font-weight:700;padding:0 18px;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.notice{padding:12px;border-radius:12px}.notice.error{background:#3a171b;color:#ffc2c2}.notice.success{background:#123226;color:#baf2d5}
.messenger{height:100vh;display:grid;grid-template-columns:340px 1fr;overflow:hidden}.sidebar{background:var(--side);border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0}.side-head{height:76px;padding:14px 16px;display:flex;align-items:center;gap:11px;border-bottom:1px solid var(--line)}.side-head>div:nth-child(2){display:grid;gap:3px;min-width:0}.side-head small{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.icon-btn{margin-left:auto;border:0;background:var(--panel2);color:#fff;width:42px;height:42px;border-radius:12px;cursor:pointer}.search{padding:12px}.search input{width:100%}.chat-list{overflow:auto;flex:1}.chat-item{padding:13px 15px;display:grid;grid-template-columns:45px 1fr auto;gap:11px;cursor:pointer;border-bottom:1px solid rgba(255,255,255,.035)}.chat-item:hover,.chat-item.active{background:var(--panel2)}.avatar{width:45px;height:45px;border-radius:15px;background:linear-gradient(145deg,#303947,#171c24);display:grid;place-items:center;font-weight:700}.chat-meta{min-width:0}.chat-meta b,.chat-meta p{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-meta p{margin:5px 0 0;color:var(--muted);font-size:13px}.chat-time{font-size:11px;color:var(--muted)}.badge{background:var(--red);border-radius:999px;padding:3px 7px;color:white;font-size:11px}.sidebar footer{padding:13px 16px;border-top:1px solid var(--line);display:flex;justify-content:space-between}.sidebar footer a{color:#cbd3dc;text-decoration:none;font-size:14px}
.chat-area{display:grid;grid-template-rows:76px 1fr auto;min-width:0;background:radial-gradient(circle at 90% 10%,rgba(214,40,40,.08),transparent 25%),#0d1116}.chat-head{padding:15px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center}.chat-head div{display:grid;gap:3px}.chat-head small{color:var(--muted)}.messages{padding:22px;overflow:auto;display:flex;flex-direction:column;gap:10px}.empty{margin:auto;color:var(--muted)}.msg{max-width:min(74%,680px);padding:10px 13px;border-radius:16px;background:var(--panel2);align-self:flex-start}.msg.mine{background:#5b1b20;align-self:flex-end}.msg .author{font-size:12px;color:#f49b9b;margin-bottom:5px}.msg .time{font-size:10px;color:#aeb7c2;text-align:right;margin-top:6px}.msg img{max-width:100%;border-radius:12px}.msg audio{max-width:100%}.file-link{color:#fff}
.composer{display:grid;grid-template-columns:auto 1fr auto auto auto;gap:8px;padding:12px;border-top:1px solid var(--line);background:#10141a}.composer textarea{resize:none;max-height:140px;min-height:44px;border:1px solid var(--line);background:var(--panel);color:white;border-radius:14px;padding:11px 13px}.send-btn{border:0;background:var(--red);color:white;width:44px;height:44px;border-radius:14px;cursor:pointer}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.65);display:grid;place-items:center;padding:18px}.modal.hidden{display:none}.modal-card{width:min(100%,480px);max-height:75vh;overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:22px;position:relative}.close{position:absolute;right:15px;top:12px;border:0;background:none;color:white;font-size:28px}.user-row{padding:12px;border-bottom:1px solid var(--line);cursor:pointer}.user-row:hover{background:var(--panel2)}
.admin-page{padding:25px}.admin-wrap{max-width:1100px;margin:auto;display:grid;gap:20px}.admin-wrap header a{color:#ddd}.admin-wrap .panel{width:100%}#adminUsers .user-row{cursor:default}
@media(max-width:760px){.messenger{grid-template-columns:1fr}.sidebar{position:absolute;z-index:2;width:100%;height:100%;transition:.2s}.sidebar.mobile-hidden{transform:translateX(-100%)}.chat-area{height:100vh}.msg{max-width:88%}}

.back-btn{display:none;margin-right:10px}.msg{position:relative}.msg-menu{position:absolute;right:6px;top:4px;border:0;background:transparent;color:#b9c1cc;cursor:pointer;font-size:18px}.tabs{display:flex;gap:8px;margin-bottom:18px}.tab{flex:1;border:1px solid var(--line);background:var(--panel2);color:#fff;border-radius:10px;padding:10px}.tab.active{background:var(--red)}.hidden{display:none!important}.modal-input{width:100%;min-height:44px;border:1px solid var(--line);background:#0e1217;color:#fff;border-radius:12px;padding:0 12px;margin-bottom:12px}.check-row{display:block;padding:9px;border-bottom:1px solid var(--line)}.admin-user{display:flex;justify-content:space-between;align-items:center;gap:12px}.status-btn{border:1px solid var(--line);background:var(--panel2);color:#fff;border-radius:10px;padding:9px 12px}
@media(max-width:760px){.back-btn{display:grid}.chat-head{padding-left:8px}}