:root{
  --bg:#0a0e1a;
  --bg2:#0e1424;
  --panel:rgba(18,25,45,.72);
  --card:rgba(22,30,54,.72);
  --card-solid:#161e36;
  --line:rgba(255,255,255,.08);
  --line2:rgba(255,255,255,.14);
  --text:#eef1f8;
  --muted:#9aa6c4;
  --accent:#ffb020;
  --accent-2:#ff8a3d;
  --blue:#6b9bff;
  --ok:#41d693;
  --err:#ff6b6b;
  --shadow:0 18px 40px rgba(0,0,0,.35);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body,#app{height:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(1100px 700px at 12% -8%, rgba(107,155,255,.18), transparent 55%),
    radial-gradient(900px 600px at 100% 0%, rgba(255,138,61,.14), transparent 50%),
    linear-gradient(160deg, var(--bg) 0%, var(--bg2) 100%);
  -webkit-font-smoothing:antialiased;
}
#app{display:flex;height:100vh;overflow:hidden}

/* ---------- Sidebar ---------- */
.sidebar{
  width:236px;flex-shrink:0;
  background:var(--panel);
  backdrop-filter:blur(18px);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:24px 16px;
}
.brand{display:flex;align-items:center;gap:12px;margin-bottom:34px;padding-left:4px}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  display:grid;place-items:center;font-weight:800;font-size:20px;color:#1a1200;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 6px 16px rgba(255,138,61,.35);
}
.brand-text{font-weight:800;font-size:21px;letter-spacing:.2px}
.brand-text span{background:linear-gradient(135deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
nav{display:flex;flex-direction:column;gap:6px;flex:1}
.nav-btn{
  display:flex;align-items:center;gap:12px;
  background:transparent;border:1px solid transparent;color:var(--muted);
  text-align:left;padding:12px 14px;border-radius:12px;font-size:15px;font-weight:500;
  font-family:inherit;cursor:pointer;transition:all .18s ease;
}
.nav-btn svg{opacity:.85}
.nav-btn:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-btn.active{
  color:#fff;background:linear-gradient(135deg,rgba(255,176,32,.16),rgba(107,155,255,.12));
  border-color:var(--line2);
}
.nav-btn.active svg{color:var(--accent)}
.sidebar-foot{color:var(--muted);font-size:12px;padding-left:6px;opacity:.7}

/* ---------- Views ---------- */
.view{flex:1;display:flex;flex-direction:column;height:100vh;min-width:0}
.hidden{display:none !important}
.topbar{
  padding:18px 30px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:12px;
  background:rgba(10,14,26,.35);backdrop-filter:blur(10px);
}
.topbar-title{display:flex;align-items:center;gap:13px}
.topbar h2{font-size:17px;font-weight:700;letter-spacing:.2px}
.topbar-sub{font-size:12.5px;color:var(--muted);display:flex;align-items:center;gap:7px;margin-top:2px}
.avatar-b{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  display:grid;place-items:center;font-weight:800;font-size:19px;color:#1a1200;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 6px 16px rgba(255,138,61,.3);
}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--muted);box-shadow:0 0 0 3px rgba(154,166,196,.15)}
.status-dot.on{background:var(--ok);box-shadow:0 0 0 3px rgba(65,214,147,.2)}
.status-dot.err{background:var(--err);box-shadow:0 0 0 3px rgba(255,107,107,.2)}

/* ---------- Chat ---------- */
.chat-window{flex:1;overflow-y:auto;padding:30px 30px 10px;display:flex;flex-direction:column;gap:18px}
.chat-window::-webkit-scrollbar{width:8px}
.chat-window::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:8px}
.msg{display:flex;align-items:flex-end;gap:10px;animation:rise .28s ease}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg.user{justify-content:flex-end}
.msg.bot::before{
  content:"Б";width:30px;height:30px;border-radius:9px;flex-shrink:0;
  display:grid;place-items:center;font-weight:800;font-size:14px;color:#1a1200;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.bubble{
  max-width:68%;padding:13px 17px;border-radius:18px;line-height:1.55;font-size:15px;
  white-space:pre-wrap;word-wrap:break-word;box-shadow:var(--shadow);
}
.msg.bot .bubble{
  background:var(--card-solid);border:1px solid var(--line);
  border-bottom-left-radius:6px;
}
.msg.user .bubble{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#241500;font-weight:500;border-bottom-right-radius:6px;
}
.bubble.typing{color:var(--muted);font-style:normal}
.chat-input{
  display:flex;gap:12px;padding:18px 30px 24px;
  border-top:1px solid var(--line);background:rgba(10,14,26,.35);backdrop-filter:blur(10px);
}
.chat-input textarea{
  flex:1;resize:none;background:var(--card-solid);border:1px solid var(--line2);
  color:var(--text);border-radius:14px;padding:14px 18px;font-size:15px;font-family:inherit;
  max-height:150px;transition:border-color .18s;
}
.chat-input textarea:focus{outline:none;border-color:var(--accent)}
.chat-input textarea::placeholder{color:var(--muted)}
#send-btn{
  width:52px;height:52px;flex-shrink:0;align-self:flex-end;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#1a1200;
  border:none;border-radius:14px;cursor:pointer;transition:transform .15s,box-shadow .15s;
  box-shadow:0 8px 20px rgba(255,138,61,.35);
}
#send-btn:hover{transform:translateY(-2px)}
#send-btn:disabled{opacity:.5;cursor:default;transform:none;box-shadow:none}

/* ---------- Admin ---------- */
.admin-login{flex:1;display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{text-align:center;box-shadow:var(--shadow)}
.login-icon{font-size:34px;margin-bottom:6px}
.muted-p{color:var(--muted);font-size:13.5px;line-height:1.5;margin:2px 0 8px}
.admin-panel{flex:1;overflow-y:auto;padding:26px 30px}
.admin-panel::-webkit-scrollbar{width:8px}
.admin-panel::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:8px}
.admin-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{
  background:var(--card);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:18px;padding:22px;
  box-shadow:0 10px 30px rgba(0,0,0,.22);
}
.card.wide{grid-column:1 / -1}
.card.narrow{width:360px;max-width:100%}
.card h3{font-size:15px;margin-bottom:16px;display:flex;align-items:center;gap:9px;font-weight:700}
.card h3 .ico{font-size:17px}
.card label{display:block;font-size:12.5px;color:var(--muted);margin:14px 0 7px;font-weight:500}
.card input,.card select,.card textarea{
  width:100%;background:rgba(10,14,26,.6);border:1px solid var(--line2);
  color:var(--text);border-radius:11px;padding:11px 13px;font-size:14px;font-family:inherit;
  transition:border-color .18s;
}
.card input:focus,.card select:focus,.card textarea:focus{outline:none;border-color:var(--accent)}
.card textarea.doc{font-family:ui-monospace,Menlo,Consolas,monospace;resize:vertical;line-height:1.5}
.card button{
  margin-top:16px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#1a1200;
  border:none;border-radius:11px;padding:11px 20px;font-weight:700;font-size:14px;
  font-family:inherit;cursor:pointer;transition:transform .15s,box-shadow .15s;
  box-shadow:0 6px 16px rgba(255,138,61,.28);
}
.card button:hover{transform:translateY(-1px)}
.card button.ghost,button.ghost{
  background:transparent;border:1px solid var(--line2);color:var(--text);box-shadow:none;
}
.card button.ghost:hover{border-color:var(--accent);background:rgba(255,176,32,.06)}
.row{display:flex;gap:12px}
.hint{font-size:12px;color:var(--muted);margin-top:7px}
.ok{color:var(--ok);font-size:13px;margin-top:12px;min-height:16px;font-weight:500}
.err{color:var(--err);font-size:13px;margin-top:10px;min-height:16px;font-weight:500}
.small{margin-top:22px;padding:9px 18px !important}
.file-list{list-style:none;margin-top:16px;display:flex;flex-direction:column;gap:9px}
.file-list li{
  display:flex;justify-content:space-between;align-items:center;
  background:rgba(10,14,26,.5);border:1px solid var(--line);border-radius:11px;
  padding:11px 14px;font-size:13.5px;
}
.file-list button{margin:0;background:transparent;border:none;color:var(--err);cursor:pointer;font-size:13px;box-shadow:none;font-weight:600}
#upload-form{display:flex;gap:12px;align-items:center}
#upload-form input{flex:1}
#upload-form button{margin:0}

/* ---------- Responsive ---------- */
@media(max-width:860px){
  .admin-grid{grid-template-columns:1fr}
  .sidebar{width:72px;padding:20px 10px}
  .brand-text{display:none}
  .nav-btn span{display:none}
  .nav-btn{justify-content:center;padding:12px 0}
  .sidebar-foot{display:none}
  .bubble{max-width:82%}
}