:root{
  --bg:#0e1621; --panel:#17212b; --panel2:#1f2c37; --text:#e8ecf0;
  --muted:#75929e; --accent:#2b5278; --accent2:#4e9e6e; --danger:#e05656;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{background:var(--bg);color:var(--text);font:15px/1.4 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
.hidden{display:none!important}
a{color:#6cb3ff}

.view{height:100%}
.login-card{max-width:360px;margin:8vh auto 0;background:var(--panel);padding:28px;border-radius:var(--radius)}
.login-card h1{font-size:24px;margin-bottom:4px}
.sub{color:var(--muted);margin-bottom:16px;font-size:13px}
.tabs{display:flex;gap:8px;margin-bottom:16px}
.tab{flex:1;padding:9px;background:var(--panel2);color:var(--muted);border:0;border-radius:8px;cursor:pointer}
.tab.active{background:var(--accent);color:#fff}
.login-form input{width:100%;padding:11px;margin-bottom:10px;background:var(--panel2);border:1px solid #2a3945;border-radius:8px;color:var(--text)}
.login-form input:focus{outline:none;border-color:var(--accent2)}
.hint{font-size:12px;color:var(--muted);margin-bottom:10px}
.form-msg{min-height:18px;font-size:13px;color:var(--danger);margin-top:4px}
.form-msg.ok{color:#8fd39a}

.layout{display:flex;height:100vh;max-height:100vh}
.sidebar{width:300px;min-width:300px;background:var(--panel);display:flex;flex-direction:column;border-right:1px solid #202c38}
.sidebar-head{display:flex;align-items:center;gap:8px;padding:10px;border-bottom:1px solid #202c38}
.me{flex:1;display:flex;align-items:center;gap:8px;overflow:hidden}
.me .nm{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-btn{background:none;border:0;color:var(--muted);font-size:20px;cursor:pointer;width:34px;height:34px;border-radius:8px}
.icon-btn:hover{background:var(--panel2)}
.search{padding:8px}
.search input{width:100%;padding:9px;background:var(--panel2);border:0;border-radius:8px;color:var(--text)}
.search-results{max-height:200px;overflow:auto;border-bottom:1px solid #202c38}
.dialog-list{list-style:none;overflow-y:auto;flex:1}
.dialog-item{display:flex;gap:10px;padding:10px;cursor:pointer;align-items:center;border-bottom:1px solid #16202a}
.dialog-item:hover,.dialog-item.active{background:var(--panel2)}
.dialog-item .info{flex:1;min-width:0}
.dialog-item .name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dialog-item .prev{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dialog-item .when{color:var(--muted);font-size:11px}

.chat{flex:1;display:flex;flex-direction:column;background:var(--bg);min-width:0}
.chat-head{padding:12px 16px;border-bottom:1px solid #202c38;font-weight:600;display:flex;align-items:center;gap:10px}
.chat-head-placeholder{color:var(--muted);font-weight:400}
.messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:6px}
.msg{max-width:70%;padding:8px 12px;border-radius:14px;position:relative;word-wrap:break-word;white-space:pre-wrap}
.msg.mine{align-self:flex-end;background:var(--accent)}
.msg.theirs{align-self:flex-start;background:var(--panel2);border-top-left-radius:4px}
.msg .meta{display:block;font-size:10px;color:rgba(255,255,255,.65);margin-top:3px;text-align:right}
.msg img.preview{max-width:240px;max-height:240px;border-radius:10px;display:block;margin-bottom:4px;cursor:pointer}
.msg .filedl{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);padding:8px;border-radius:10px;color:#fff;text-decoration:none}

.composer{display:flex;align-items:flex-end;gap:8px;padding:10px;background:var(--panel)}
.composer textarea{flex:1;resize:none;min-height:42px;max-height:120px;padding:11px;background:var(--panel2);border:0;border-radius:10px;color:var(--text);font:inherit}
.composer textarea:focus{outline:none}
.attach-label{cursor:pointer;font-size:22px;padding:8px}
.btn{background:var(--panel2);border:0;color:var(--text);padding:9px 14px;border-radius:9px;cursor:pointer}
.btn.primary{background:var(--accent2);color:#fff}
.btn.danger{background:var(--danger);color:#fff}
.btn.wide{width:100%}
.btn.send{font-size:16px}
.btn.close{background:transparent;color:var(--muted)}

.modal{position:fixed;inset:0;background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;z-index:20}
.modal-card{max-width:400px;width:90%;background:var(--panel);border-radius:var(--radius);padding:20px}
.modal-card h3{margin-bottom:12px}
.modal-card input[type=text]{width:100%;padding:10px;background:var(--panel2);border:0;border-radius:8px;color:var(--text);margin-bottom:8px}
.nc-results{list-style:none;max-height:220px;overflow:auto}
.nc-results li{padding:10px;cursor:pointer;border-radius:8px}
.nc-results li:hover{background:var(--panel2)}
.set-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.set-row label{color:var(--muted)}
.set-row input[type=text]{flex:1;padding:9px;background:var(--panel2);border:0;border-radius:8px;color:var(--text)}
.set-actions{display:flex;gap:10px;margin-top:12px}
.ava{width:34px;height:34px;border-radius:50%;object-fit:cover;background:#2a3945}
.ava.big{width:56px;height:56px}
.ava-pick{display:flex;align-items:center;gap:10px}

.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#121c26;color:#fff;padding:10px 16px;border-radius:10px;box-shadow:0 4px 16px rgba(0,0,0,.4);z-index:30}

/* адаптивность */
@media (max-width:720px){
  .sidebar{width:100%;min-width:0}
  .chat{position:fixed;inset:0;background:var(--bg)}
  .chat.mobile-hidden{visibility:hidden}
  .sidebar.mobile-hidden{display:none}
  .msg{max-width:86%}
  .login-card{margin:6vh 16px 0}
}