:root{
  --bg:#070b17;
  --surface:rgba(255,255,255,.06);
  --surface-2:rgba(255,255,255,.04);
  --border:rgba(190,208,255,.22);
  --text:#ecf2ff;
  --muted:#b7c5ea;
  --accent:#7c5cff;
  --accent-2:#35b6ff;
  --ok:#3dd598;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text)}
.bg{
  min-height:100vh;
  background:
    radial-gradient(1200px 800px at 0% -10%, rgba(124,92,255,.35), transparent 50%),
    radial-gradient(1200px 800px at 100% -20%, rgba(53,182,255,.25), transparent 52%),
    linear-gradient(180deg,#060a14,#0b1325 50%,#090f1d);
}
.noise{position:fixed;inset:0;pointer-events:none;background-image:radial-gradient(rgba(255,255,255,.04) 1px,transparent 0);background-size:3px 3px;opacity:.12}

h1,h2,h3,h4{margin:0 0 10px}
p{margin:0}
a{color:#9fd1ff}
.muted{color:var(--muted);font-size:13px}
.hidden{display:none!important}

input,textarea,button,select{
  width:100%;
  padding:11px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background:#0f1a33;
  color:#f7f9ff;
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent-2);box-shadow:0 0 0 3px rgba(58,146,255,.2)}
button{cursor:pointer;background:linear-gradient(180deg,var(--accent),#5f46ff);border:0;font-weight:700}
button:hover{filter:brightness(1.08)}
button:disabled{opacity:.5;cursor:not-allowed}
.ghost{background:#162343;border:1px solid rgba(157,184,255,.25)}
.tiny{padding:4px 8px;border-radius:8px;font-size:12px;width:auto}
.button-link{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;padding:11px 12px;border-radius:12px;background:#162343;border:1px solid rgba(157,184,255,.25);color:var(--text);font-weight:700}

.glass{background:linear-gradient(180deg,var(--surface),var(--surface-2));border:1px solid var(--border);border-radius:18px;backdrop-filter:blur(12px);box-shadow:0 20px 45px rgba(4,8,20,.45)}

/* auth */
.auth-shell{max-width:1280px;margin:0 auto;min-height:100vh;display:grid;grid-template-columns:1.2fr 1fr;gap:24px;padding:24px;align-items:center}
.hero{padding:26px}
.pill{display:inline-flex;padding:7px 12px;border:1px solid rgba(168,192,255,.3);border-radius:999px;background:rgba(98,122,255,.16);font-size:12px;margin-bottom:14px}
.hero h1{font-size:64px;line-height:1.05;letter-spacing:-.02em}
.lead{font-size:18px;color:#c9d7f4;max-width:620px}
.feature-grid{margin-top:20px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.feature-grid article{padding:14px;border-radius:14px;border:1px solid rgba(169,191,255,.2);background:rgba(14,21,42,.52)}
.feature-grid h4{margin-bottom:6px}
.feature-grid p{font-size:13px;color:#bfd0ff;line-height:1.4}

.auth-card{padding:22px;max-width:480px;justify-self:end;width:100%}
.auth-card,.panel,.admin-shell,.left-rail,.chat-panel{background:linear-gradient(180deg,var(--surface),var(--surface-2));border:1px solid var(--border);border-radius:18px;backdrop-filter:blur(12px);box-shadow:0 20px 45px rgba(4,8,20,.45)}
.tabs{display:flex;gap:8px;margin-bottom:14px}
.tab{background:#101c37;border:1px solid rgba(149,179,255,.2)}
.tab.active{background:linear-gradient(180deg,var(--accent),#5f46ff)}
.tab-pane{display:none;gap:10px;flex-direction:column}
.tab-pane.active{display:flex}
.tab-pane label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:#c3d4ff}
.guest-row{margin-top:14px;display:flex;flex-direction:column;gap:8px}

/* app */
.app-shell{display:grid;grid-template-columns:340px 1fr;gap:14px;height:100vh;padding:12px}
.left-rail{padding:16px;display:flex;flex-direction:column;gap:12px;overflow:auto}
.stat-cards{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.stat{padding:10px;border:1px solid rgba(170,192,255,.2);background:#101a33;border-radius:12px}
.stat span{display:block;font-size:12px;color:#9fb4e8}
.stat strong{font-size:22px;line-height:1.2}
.section{padding:10px;border:1px solid rgba(170,192,255,.16);border-radius:12px;background:#0b1429}
.file-preview{white-space:pre-wrap;max-height:180px;overflow:auto;background:#091224;padding:10px;border-radius:10px;border:1px solid rgba(151,179,255,.2)}
.snippet-list{display:flex;flex-direction:column;gap:8px;max-height:200px;overflow:auto}
.snippet{display:flex;justify-content:space-between;gap:8px;padding:8px;border-radius:10px;background:#121f40;border:1px solid rgba(149,179,255,.2)}
.snippet span{font-size:12px;color:#dce6ff;line-height:1.35}
.rail-actions{margin-top:auto;display:grid;gap:8px}

.chat-panel{padding:12px;display:flex;flex-direction:column;height:calc(100vh - 24px)}
.chat-header{display:flex;justify-content:space-between;gap:10px;align-items:flex-start;padding:6px 6px 10px}
.badge{padding:6px 10px;border-radius:999px;font-size:12px;background:rgba(124,92,255,.2);border:1px solid rgba(157,184,255,.35);text-transform:uppercase;letter-spacing:.08em}
.messages{flex:1;min-height:0;overflow:auto;padding:10px;background:#0a1225;border-radius:14px;border:1px solid rgba(154,181,255,.16)}
.msg-wrap{display:flex;flex-direction:column;max-width:92%;margin:12px 0}
.msg-wrap.me{margin-left:auto;align-items:flex-end}
.msg-wrap.bot{margin-right:auto;align-items:flex-start}
.msg{padding:11px 12px;border-radius:12px;line-height:1.5;border:1px solid rgba(155,183,255,.2)}
.msg.me{background:#1a3270}
.msg.bot{background:#16223f}
.msg-time{font-size:11px;color:#9fb0d8;margin-top:4px}
.typing{padding:8px 10px;font-size:13px;color:#c8d6fa}
.composer{display:grid;grid-template-columns:1fr 140px;gap:10px;margin-top:10px}
textarea{min-height:86px;resize:vertical}
pre code{display:block;background:#091224;padding:11px;border-radius:10px;border:1px solid rgba(141,173,255,.24);overflow:auto}

/* admin */
.admin-shell{max-width:1320px;margin:14px auto;padding:16px;display:grid;gap:14px}
.admin-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.overview-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.metric{padding:14px;border-radius:12px;background:#111d39;border:1px solid rgba(164,191,255,.2)}
.metric span{display:block;color:#9fb4e8;font-size:12px}
.metric strong{font-size:28px}
.admin-grid{display:grid;grid-template-columns:2fr 1.2fr;gap:12px}
.panel{padding:14px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:#bfd0ff}
.toggle-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:12px 0}
.toggle-grid label{display:flex;flex-direction:row;align-items:center;gap:8px;background:#101c37;padding:10px;border-radius:10px;border:1px solid rgba(154,181,255,.2)}
.toggle-grid input{width:auto}
.table-wrap{max-height:360px;overflow:auto;border:1px solid rgba(154,181,255,.2);border-radius:12px;margin-top:10px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:8px;border-bottom:1px solid rgba(154,181,255,.15);text-align:left}

@media (max-width:1100px){
  .auth-shell{grid-template-columns:1fr;padding-top:28px}
  .hero h1{font-size:44px}
  .feature-grid{grid-template-columns:1fr}
  .auth-card{justify-self:stretch;max-width:none}
  .app-shell{grid-template-columns:1fr;height:auto;min-height:100vh}
  .chat-panel{height:70vh}
  .admin-grid{grid-template-columns:1fr}
  .overview-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:680px){
  .app-shell{padding:8px;gap:8px}
  .left-rail,.chat-panel{padding:10px;border-radius:14px}
  .composer{grid-template-columns:1fr}
  .hero{padding:8px}
  .hero h1{font-size:36px}
  .overview-grid{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
}