*{box-sizing:border-box;margin:0;padding:0}
:root{
  --c-bg:#141414;
  --c-surface:#1e1e1e;
  --c-surface2:#252526;
  --c-surface3:#2d2d30;
  --c-border:#333;
  --c-border2:#3e3e42;
  --c-text:#d4d4d4;
  --c-text2:#9d9d9d;
  --c-text3:#5a5a5a;
  --c-accent:#0078d4;
  --c-green:#4ec9b0;
  --c-yellow:#f5a623;
  --c-red:#f85149;
  --c-blue:#4fc1ff;
  --r:6px;
  --font:'Segoe UI',system-ui,-apple-system,sans-serif;
}
html,body{height:100%;background:var(--c-bg);color:var(--c-text);font-family:var(--font);font-size:14px;-webkit-font-smoothing:antialiased}

/* ── App shell ── */
.app{display:flex;flex-direction:column;height:100vh;max-width:960px;margin:0 auto}

/* ── Session gate — shown instead of .app while resolving/claiming access ── */
.session-gate{display:flex;align-items:center;justify-content:center;height:100vh;padding:24px}
.gate-card{max-width:360px;text-align:center}
.gate-title{font-size:16px;font-weight:600;color:var(--c-text);margin-bottom:8px}
.gate-body{font-size:13px;color:var(--c-text2);line-height:1.5}
.gate-hint{font-size:11px;color:var(--c-text3);margin-top:16px}
.gate-spinner{width:28px;height:28px;margin:0 auto 16px;border-radius:50%;
  border:3px solid var(--c-border2);border-top-color:var(--c-accent);
  animation:gate-spin .8s linear infinite}
@keyframes gate-spin{to{transform:rotate(360deg)}}

/* ── Header ── */
.hdr{background:var(--c-surface2);border-bottom:1px solid var(--c-border);
     padding:0 18px;height:48px;display:flex;align-items:center;gap:10px;flex-shrink:0}
.hdr-logo{font-size:15px;font-weight:700;color:var(--c-text);letter-spacing:.3px}
.hdr-status{display:flex;align-items:center;gap:6px;margin-left:auto;font-size:12px;color:var(--c-text2)}

/* ── Tab bar — bottom on mobile, top on desktop ── */
.tab-bar{display:flex;background:var(--c-surface2);border-top:1px solid var(--c-border);flex-shrink:0;order:2}
.content{flex:1;overflow-y:auto;order:1;padding:16px}
@media(min-width:600px){
  .tab-bar{order:0;border-top:none;border-bottom:1px solid var(--c-border)}
  .content{padding:20px}
}
.tab-btn{flex:1;background:none;border:none;border-top:2px solid transparent;
         padding:14px 6px;font-size:11px;font-weight:600;text-transform:uppercase;
         letter-spacing:.7px;color:var(--c-text3);cursor:pointer;font-family:var(--font);
         transition:color .15s,border-color .15s}
.tab-btn:hover:not(.on){color:var(--c-text2)}
.tab-btn.on{color:var(--c-text);border-top-color:var(--c-accent)}
@media(min-width:600px){
  .tab-btn{padding:10px 14px;border-top:none;border-bottom:2px solid transparent}
  .tab-btn.on{border-top:none;border-bottom-color:var(--c-accent)}
}

/* ── Relay dot ── */
.rdot{display:inline-block;width:8px;height:8px;border-radius:50%;flex-shrink:0}
.rdot.green{background:var(--c-green);box-shadow:0 0 5px rgba(78,201,176,.6)}
.rdot.yellow{background:var(--c-yellow)}
.rdot.gray{background:#444}

/* ── Status dots (account table) ── */
.sdot{display:inline-block;width:10px;height:10px;border-radius:50%;flex-shrink:0}
.sdot-on  {background:var(--c-green);box-shadow:0 0 5px rgba(78,201,176,.5)}
.sdot-err {background:var(--c-red);box-shadow:0 0 5px rgba(248,81,73,.4)}
.sdot-off {background:#3a3a3a;border:1px solid #444}

/* ── Stat cards ── */
.stat-row{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:18px}
@media(min-width:400px){.stat-row{grid-template-columns:repeat(4,1fr)}}
.stat-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r);
           padding:14px 12px;text-align:center}
.stat-val{font-size:28px;font-weight:700;line-height:1;color:var(--c-text);font-variant-numeric:tabular-nums}
.stat-val.green{color:var(--c-green)}
.stat-val.yellow{color:var(--c-yellow)}
.stat-val.red{color:var(--c-red)}
.stat-val.blue{color:var(--c-blue)}
.stat-lbl{font-size:10px;color:var(--c-text3);margin-top:5px;text-transform:uppercase;letter-spacing:.6px}

/* ── PC grid (overview) ── */
.pc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px;margin-bottom:8px}
.pc-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r);
         padding:14px;cursor:pointer;transition:border-color .15s,background .15s}
.pc-card:hover{border-color:var(--c-accent);background:var(--c-surface2)}
.pc-hdr{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.pc-name{font-size:13px;font-weight:600;color:var(--c-text)}
.pc-detail{font-size:12px;color:var(--c-text2)}
.pc-counts{display:flex;gap:12px;margin-top:6px}
.pc-count{font-size:11px;color:var(--c-text3)}
.pc-count span{font-weight:600;font-size:13px}
.pc-count.green span{color:var(--c-green)}
.pc-count.red span{color:var(--c-red)}
.pc-count.yellow span{color:var(--c-yellow)}

/* ── Section header ── */
.section-name{font-size:17px;font-weight:700;color:var(--c-text)}

/* ── Sentinel cards ── */
.sentinel-card{background:var(--c-surface);border:1px solid var(--c-border);
               border-radius:var(--r);padding:14px;margin-bottom:12px}
.sentinel-hdr{display:flex;align-items:center;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.sentinel-name{font-size:13px;font-weight:600;color:var(--c-text)}
.sentinel-meta{font-size:11px;color:var(--c-text3);margin-left:2px}

/* ── Account table ── */
.acc-table{width:100%;border-collapse:collapse;font-size:12px}
.acc-table thead th{
  text-align:left;font-size:10px;color:var(--c-text3);padding:5px 10px;
  border-bottom:1px solid var(--c-border);font-weight:600;text-transform:uppercase;
  letter-spacing:.5px;white-space:nowrap}
.acc-table tbody td{
  padding:7px 10px;border-bottom:1px solid var(--c-border)}
.acc-table tbody tr:last-child td{border-bottom:none}
.acc-table tbody tr:hover td{background:rgba(255,255,255,.02)}
/* offline rows — dimmed */
.acc-table tbody tr.row-off td{opacity:.5}
.acc-table tbody tr.row-warn td{background:rgba(245,166,35,.04)}
/* party group header */
.acc-table tr.party-hdr td{
  padding:6px 10px 3px;background:none;border-bottom:none}
.party-lbl{font-size:10px;font-weight:600;color:var(--c-text3);
           text-transform:uppercase;letter-spacing:.6px}
/* dot cell — tight */
.acc-table td:first-child{width:22px;text-align:center;padding-left:10px}
.acc-name{font-weight:500;color:var(--c-text)}
.acc-user{font-size:11px;color:var(--c-text3)}
.acc-lv{color:var(--c-text2);font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}
.acc-actions{text-align:right;white-space:nowrap}

/* ── Buttons ── */
.btn-sm{padding:3px 10px;border:1px solid var(--c-border2);border-radius:4px;
        font-size:11px;cursor:pointer;font-family:var(--font);background:var(--c-surface3);
        color:var(--c-text2);transition:background .12s,color .12s,border-color .12s}
.btn-sm:hover{background:var(--c-surface2);color:var(--c-text)}
.btn-run{border-color:rgba(78,201,176,.3);color:var(--c-green)}
.btn-run:hover{background:rgba(78,201,176,.08);border-color:rgba(78,201,176,.6)}
.btn-stop{border-color:rgba(248,81,73,.3);color:var(--c-red)}
.btn-stop:hover{background:rgba(248,81,73,.08);border-color:rgba(248,81,73,.6)}

/* ── Misc ── */
.empty-msg{color:var(--c-text3);font-size:13px;padding:28px 0;text-align:center}
.toast{position:fixed;bottom:72px;left:50%;transform:translateX(-50%);
       background:var(--c-surface3);border:1px solid var(--c-border2);border-radius:var(--r);
       padding:8px 18px;font-size:12px;z-index:99;display:none;white-space:nowrap}
.toast.ok{border-color:rgba(78,201,176,.5);color:var(--c-green)}
.toast.err{border-color:rgba(248,81,73,.5);color:var(--c-red)}
@media(min-width:600px){.toast{bottom:16px}}
#station-hdr{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}

/* ── PC card extras (session) ── */
.pc-sess{display:flex;align-items:center;gap:5px;margin-top:4px;flex-wrap:wrap}
.pc-sess-item{font-size:10px;font-weight:600}
.pc-sess-item.ok  {color:var(--c-green)}
.pc-sess-item.warn{color:var(--c-yellow)}
.pc-sess-item.err {color:var(--c-red)}
.pc-sess-sep{color:var(--c-text3);font-size:10px}

/* ── Session table ── */
.sess-wrap{margin-top:14px;border-top:1px solid var(--c-border);padding-top:10px}
.sess-hdr{font-size:10px;font-weight:600;color:var(--c-text3);text-transform:uppercase;
          letter-spacing:.6px;margin-bottom:6px}
.sess-table{width:100%;border-collapse:collapse;font-size:11px}
.sess-table thead th{text-align:left;color:var(--c-text3);padding:3px 8px;
                     border-bottom:1px solid var(--c-border);font-weight:500;white-space:nowrap}
.sess-table tbody td{padding:5px 8px;border-bottom:1px solid rgba(255,255,255,.04);color:var(--c-text2)}
.sess-table tbody tr:last-child td{border-bottom:none}
.sess-cn{font-weight:500;color:var(--c-text);font-size:11px}
.sess-age{color:var(--c-text3);font-size:10px}
.sess-ev{font-variant-numeric:tabular-nums;text-align:right;color:var(--c-text3)}
.sess-ev.ok  {color:var(--c-green);font-weight:600}
.sess-ev.warn{color:var(--c-yellow);font-weight:600}
.sess-ev.err {color:var(--c-red);font-weight:600}