:root{
  --bg:#0b1220; --panel:#141d2e; --panel2:#1b2740; --line:#26344f;
  --txt:#e6edf7; --muted:#8ea0be; --accent:#1f86d6; --accent2:#37c0f0;
  --ok:#2ecc71; --off:#64748b; --warn:#f1c40f; --bad:#e74c3c;
  --radius:14px; --shadow:0 8px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:radial-gradient(1200px 700px at 70% -10%,#12233f,transparent),var(--bg);color:var(--txt);min-height:100vh}
.hidden{display:none!important}
.muted{color:var(--muted)}.small{font-size:12px}
.err{color:var(--bad);font-size:13px;min-height:18px;margin-top:6px}
.brand{font-size:18px;font-weight:500;letter-spacing:.3px;display:flex;align-items:center;gap:10px}
.brand b{color:var(--accent2);font-weight:700}
.brand-dot{width:12px;height:12px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,var(--accent2),var(--accent));box-shadow:0 0 12px var(--accent)}

/* login */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}
.login-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 30px;width:340px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px}
.login-card .brand{margin-bottom:2px}
.login-card p{margin:0 0 10px}
input{background:var(--panel2);border:1px solid var(--line);color:var(--txt);
  border-radius:10px;padding:12px 14px;font-size:15px;outline:none;width:100%}
input:focus{border-color:var(--accent)}
button{cursor:pointer;font-size:15px}
.login-card button{background:linear-gradient(180deg,var(--accent2),var(--accent));border:none;color:#fff;
  padding:12px;border-radius:10px;font-weight:600;margin-top:4px}

/* topbar */
.topbar{display:flex;align-items:center;gap:18px;padding:14px 22px;
  background:rgba(20,29,46,.8);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.spacer{flex:1}
.stats{display:flex;gap:18px;margin-left:10px}
.stat{display:flex;flex-direction:column;line-height:1.1}
.stat b{font-size:18px}.stat span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.btn{border:1px solid var(--line);background:var(--panel2);color:var(--txt);padding:9px 15px;border-radius:10px}
.btn.primary{background:linear-gradient(180deg,var(--accent2),var(--accent));border:none;color:#fff;font-weight:600}
.btn.ghost{background:transparent}
.btn.sm{padding:6px 10px;font-size:13px}
.btn:hover{filter:brightness(1.08)}

/* side menu */
#app{display:block}
.sidebar{position:fixed;left:0;top:0;bottom:0;width:224px;display:flex;flex-direction:column;
  background:rgba(17,25,40,.96);border-right:1px solid var(--line);z-index:20}
.sidenav{display:flex;flex-direction:column;gap:4px;padding:10px 10px;flex:1;overflow:auto}
.navitem{display:flex;align-items:center;gap:10px;text-align:left;width:100%;cursor:pointer;
  background:transparent;border:1px solid transparent;color:var(--txt);padding:11px 14px;border-radius:10px;font-size:15px}
.navitem:hover{background:var(--panel2)}
.navitem.active{background:linear-gradient(180deg,var(--accent2),var(--accent));border-color:transparent;color:#fff;font-weight:600}
.sideuser{padding:14px;border-top:1px solid var(--line)}
.sideuser .who{font-size:13px;font-weight:600;color:var(--txt);margin-bottom:2px}
.content{margin-left:224px;min-height:100vh}
.content .topbar{justify-content:flex-start}
/* mobile top bar with hamburger — hidden on desktop */
.mobilebar{display:none}
.nav-overlay{display:none}
.hamburger{font-size:22px;background:transparent;border:1px solid var(--line);color:var(--txt);width:44px;height:44px;border-radius:10px;cursor:pointer;flex:none;line-height:1}

@media(max-width:820px){
  .mobilebar{display:flex;align-items:center;gap:12px;padding:11px 15px;position:sticky;top:0;z-index:30;
    background:rgba(17,25,40,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
  .sidebar{width:min(280px,84vw);transform:translateX(-100%);transition:transform .25s ease;box-shadow:0 0 50px rgba(0,0,0,.55)}
  .sidebar.open{transform:none}
  .nav-overlay{display:block;position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:19;opacity:0;pointer-events:none;transition:opacity .25s}
  .nav-overlay.show{opacity:1;pointer-events:auto}
  .content{margin-left:0}
  .content .topbar{position:static;padding:12px 14px}
  .stats{gap:16px;margin-left:0;overflow-x:auto;-webkit-overflow-scrolling:touch;width:100%;padding-bottom:2px}
  .stat{flex:none}
  main{padding:14px}
  .grid{grid-template-columns:1fr;gap:14px}
  .navitem{padding:13px 14px;font-size:16px}
}

/* grid */
main{padding:22px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.empty{text-align:center;color:var(--muted);margin-top:80px;font-size:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;gap:12px;transition:transform .1s}
.card:hover{transform:translateY(-2px)}
.card .head{display:flex;align-items:center;gap:10px}
.dot{width:11px;height:11px;border-radius:50%;background:var(--off);flex:none}
.dot.on{background:var(--ok);box-shadow:0 0 10px var(--ok)}
.card h4{margin:0;font-size:16px}
.card .loc{font-size:12px;color:var(--muted)}
.badge{margin-left:auto;font-size:11px;padding:3px 9px;border-radius:20px;background:var(--panel2);color:var(--muted);border:1px solid var(--line)}
.badge.active{color:var(--ok);border-color:rgba(46,204,113,.4)}
.badge.pending{color:var(--warn)}
.badge.disabled{color:var(--bad)}
/* clear online / offline pill */
.statusbadge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:4px 11px;border-radius:20px;border:1px solid var(--line);white-space:nowrap}
.statusbadge .sdot{width:8px;height:8px;border-radius:50%;background:currentColor}
.statusbadge.online{color:#57e39a;background:rgba(60,200,120,.13);border-color:rgba(60,200,120,.45)}
.statusbadge.online .sdot{box-shadow:0 0 7px #3ddc84}
.statusbadge.offline{color:#8ea0be;background:rgba(120,140,170,.10);border-color:var(--line)}
.card.offline{border-color:rgba(150,90,90,.4)}
.card.offline .head h4{color:var(--muted)}
.tele{display:grid;grid-template-columns:1fr 1fr;gap:8px 14px}
.tele div{font-size:13px;display:flex;justify-content:space-between;border-bottom:1px dashed var(--line);padding-bottom:5px}
.tele div span:first-child{color:var(--muted)}
.tele div span:last-child{font-weight:600}
.health{display:flex;gap:8px}
.pill{font-size:11px;padding:3px 8px;border-radius:8px;border:1px solid var(--line)}
.pill.good{color:var(--ok)}.pill.bad{color:var(--bad)}
/* action buttons: tidy 2-column grid, grouped by function */
.actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:4px}
.actions .btn{width:100%;display:inline-flex;align-items:center;justify-content:center;gap:6px;white-space:nowrap;padding:8px 8px;font-size:12.5px}
.actions .btn.key{background:linear-gradient(180deg,var(--accent2),var(--accent));border:none;color:#fff;font-weight:600}
.actions .sep{grid-column:1/-1;height:1px;background:var(--line);margin:3px 0 1px;opacity:.7}

/* modal */
.modal{position:fixed;inset:0;background:rgba(3,8,18,.7);display:grid;place-items:center;z-index:20;padding:20px}
.modal-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;width:400px;max-width:100%;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px}
.modal-card h3{margin:0 0 6px}
.row{display:flex;gap:10px;margin-top:6px}
.code{font-size:44px;font-weight:800;letter-spacing:10px;text-align:center;color:var(--accent2);
  background:var(--panel2);border-radius:12px;padding:16px;margin:6px 0}

/* frame preview lightbox (frames manager — click a thumbnail) */
.fclick{cursor:pointer}
.fp-card{width:min(640px,92vw);align-items:center}
.fp-stage{width:100%;display:flex;align-items:center;justify-content:center;gap:12px}
.fp-img{max-width:74%;max-height:62vh;object-fit:contain;border-radius:12px;background:#0c1526;border:1px solid var(--line);touch-action:pan-y;user-select:none;-webkit-user-drag:none}
.fp-nav{width:48px;height:48px;border-radius:50%;background:var(--panel2);border:1px solid var(--line);color:var(--txt);font-size:24px;cursor:pointer;flex:0 0 auto}
.fp-nav:hover{border-color:var(--accent2)}
.fp-name{margin-top:14px;font-weight:600;font-size:18px;text-align:center}
.fp-count{margin-top:3px;font-size:12px;color:var(--muted);text-align:center}
.fp-dots{display:flex;gap:6px;justify-content:center;margin-top:12px;flex-wrap:wrap}
.fp-dots i{width:7px;height:7px;border-radius:50%;background:var(--muted);opacity:.4}
.fp-dots i.on{opacity:1;background:var(--accent2)}
.fp-pactions{margin-top:16px;display:flex;gap:8px;justify-content:center}