:root {
  --bg: #070c16; --panel: #0e1626; --panel2: #131c30; --panel3: #0b1220;
  --border: #1b2740; --text: #e6edf7; --muted: #8496b4; --accent: #38bdf8;
  --green: #34d399; --red: #f43f5e; --amber: #f5a524; --violet: #a855f7;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
.hidden { display: none !important; }
button { font-family: inherit; }

/* ── Login ── */
.login-wrap { min-height: 100vh; display: grid; place-items: center; }
.login-card {
  width: 320px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px 24px; display: flex; flex-direction: column; gap: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.brand { font-size: 18px; font-weight: 700; }
.brand-sub { font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.login-card input {
  background: var(--panel3); border: 1px solid var(--border); color: var(--text);
  border-radius: 9px; padding: 11px 12px; font-size: 14px;
}
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-card button {
  background: var(--accent); color: #05121c; border: 0; border-radius: 9px;
  padding: 11px; font-size: 14px; font-weight: 700; cursor: pointer;
}
.login-err { color: var(--red); font-size: 12px; min-height: 14px; text-align: center; }

/* ── Dashboard shell ── */
#dash { display: flex; flex-direction: column; height: 100vh; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; background: var(--panel); border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}
.tb-left { font-weight: 700; }
.tb-right { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.tb-status { color: var(--muted); }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); display: inline-block; }
.dot.ok { background: var(--green); } .dot.bad { background: var(--red); }
.btn-ghost {
  background: transparent; color: var(--muted); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 12px; cursor: pointer; font-size: 13px;
}
.btn-ghost:hover { color: var(--text); border-color: var(--accent); }

.layout { flex: 1 1 auto; display: flex; min-height: 0; }

/* ── Left rail ── */
.rail {
  width: 320px; flex: 0 0 320px; background: var(--panel); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; min-height: 0;
}
.rail-head {
  padding: 14px 18px; font-size: 12px; font-weight: 700; letter-spacing: 1.5px;
  color: var(--muted); text-transform: uppercase; border-bottom: 1px solid var(--border);
}
.rail-count { color: var(--accent); }
.rail-list { overflow-y: auto; padding: 10px; display: flex; flex-direction: column; gap: 8px; }
.gw-item {
  background: var(--panel2); border: 1px solid var(--border); border-radius: 12px;
  padding: 12px 14px; cursor: pointer; transition: border-color .15s, background .15s;
}
.gw-item:hover { border-color: #33507e; }
.gw-item.sel { border-color: var(--accent); background: #14263c; }
.gw-item .gi-top { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.gw-item .gi-mac { font-weight: 700; font-size: 13.5px; letter-spacing: .3px; }
.gw-item .gi-meta { font-size: 11.5px; color: var(--muted); }

/* ── Right detail ── */
.detail { flex: 1 1 auto; overflow-y: auto; padding: 22px 26px; min-width: 0; }
.detail-empty { color: var(--muted); text-align: center; margin-top: 80px; font-size: 14px; }
.detail.slidein { animation: slidein .32s cubic-bezier(.2,.7,.2,1); }
@keyframes slidein { from { opacity: 0; transform: translateX(34px); } to { opacity: 1; transform: none; } }
.detail.slideback { animation: slideback .32s cubic-bezier(.2,.7,.2,1); }
@keyframes slideback { from { opacity: 0; transform: translateX(-34px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .detail.slidein, .detail.slideback { animation: none; } }

/* back button + all-gateways landing (main pane, nothing selected) */
.btn-back {
  background: var(--panel3); color: var(--muted); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 12px; cursor: pointer; font-size: 13px; font-weight: 600; margin-right: 4px;
}
.btn-back:hover { color: var(--text); border-color: var(--accent); }
.land-head { font-size: 12px; font-weight: 700; letter-spacing: 1.4px; color: var(--muted);
  text-transform: uppercase; margin: 2px 2px 14px; }
.landing { display: grid; grid-template-columns: repeat(auto-fill,minmax(300px,1fr)); gap: 16px; }
.land-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 16px 18px; cursor: pointer; transition: border-color .15s, transform .15s; }
.land-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.lc-top { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.lc-mac { font-size: 16px; font-weight: 800; letter-spacing: .4px; }
.lc-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.lc-open {
  margin-top: 14px; width: 100%; background: rgba(56,189,248,.12); color: var(--accent);
  border: 1px solid rgba(56,189,248,.4); border-radius: 9px; padding: 9px;
  font-size: 13px; font-weight: 700; cursor: pointer;
}
.lc-open:hover { background: rgba(56,189,248,.22); }

/* rail only in detail view — hidden on the all-gateways landing */
#dash.rail-hidden .rail { display: none; }
.rail-back {
  margin: 12px 12px 4px; padding: 10px 12px; text-align: left;
  background: rgba(56,189,248,.1); color: var(--accent);
  border: 1px solid rgba(56,189,248,.4); border-radius: 9px;
  font-size: 13px; font-weight: 700; cursor: pointer;
}
.rail-back:hover { background: rgba(56,189,248,.2); }

/* gateway header card */
.gw-head {
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 18px 20px; margin-bottom: 20px;
}
.gw-head-top { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.gw-head-mac { font-size: 20px; font-weight: 800; letter-spacing: .5px; }
.pill { font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.pill.online { background: rgba(52,211,153,.16); color: var(--green); }
.pill.offline { background: rgba(244,63,94,.16); color: var(--red); }
.pill.state { background: rgba(56,189,248,.14); color: var(--accent); }
.pill.ota { background: rgba(245,165,36,.16); color: var(--amber); }
.gw-fields { display: grid; grid-template-columns: repeat(auto-fill,minmax(150px,1fr)); gap: 12px; }
.field .fk { font-size: 10.5px; color: var(--muted); text-transform: uppercase; letter-spacing: .6px; }
.field .fv { font-size: 14px; font-weight: 600; margin-top: 2px; word-break: break-all; }

/* node grid */
.nodes-title { font-size: 12px; font-weight: 700; letter-spacing: 1.4px; color: var(--muted);
  text-transform: uppercase; margin: 4px 2px 12px; }
.nodes { display: grid; grid-template-columns: repeat(auto-fill,minmax(320px,1fr)); gap: 16px; }
.node { background: var(--panel2); border: 1px solid var(--border); border-radius: 14px; padding: 16px; }
.node-name { font-weight: 700; font-size: 14.5px; margin-bottom: 10px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.chip { font-size: 10.5px; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--panel3); color: var(--muted); }
.chip.act { background: rgba(52,211,153,.16); color: var(--green); }
.chip.deact { background: rgba(148,150,180,.14); color: var(--muted); }
.chip.charging { background: rgba(52,211,153,.16); color: var(--green); }
.chip.err { background: rgba(244,63,94,.18); color: var(--red); }
.metrics { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; margin-bottom: 14px; }
.metric { background: var(--panel3); border-radius: 9px; padding: 8px 9px; }
.metric .k { font-size: 10px; color: var(--muted); }
.metric .v { font-size: 15px; font-weight: 700; margin-top: 1px; }
.controls { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.controls button {
  border: 0; border-radius: 9px; padding: 9px 6px; font-weight: 700; font-size: 12.5px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 6px; color: #05121c;
}
.btn-start { background: var(--green); }
.btn-stop  { background: var(--red); color: #fff; }
.btn-set   { background: transparent; color: var(--accent); border: 1px solid var(--accent) !important; }
.btn-reboot{ background: transparent; color: var(--amber); border: 1px solid rgba(245,165,36,.5) !important; }
.btn-offline{ background: transparent; color: var(--muted); border: 1px solid var(--border) !important; }
.controls .wide { grid-column: span 3; }
.controls button:disabled { opacity: .5; cursor: default; }
.spin { width: 13px; height: 13px; border: 2px solid rgba(0,0,0,.25); border-top-color: currentColor;
  border-radius: 50%; animation: sp .7s linear infinite; display: inline-block; }
.btn-stop .spin, .btn-set .spin, .btn-reboot .spin, .btn-offline .spin { border-color: rgba(255,255,255,.3); border-top-color: currentColor; }
@keyframes sp { to { transform: rotate(360deg); } }

/* ── Modal (set-current / confirm) ── */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(2,6,14,.6); display: grid; place-items: center; z-index: 30;
  animation: fade .15s ease;
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.modal {
  width: 340px; background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 22px; box-shadow: 0 20px 60px rgba(0,0,0,.6);
}
.modal h3 { margin: 0 0 4px; font-size: 16px; }
.modal .sub { color: var(--muted); font-size: 12px; margin-bottom: 18px; }
.slider-val { font-size: 34px; font-weight: 800; text-align: center; color: var(--accent); }
.slider-val small { font-size: 15px; color: var(--muted); font-weight: 600; }
.modal input[type=range] { width: 100%; margin: 14px 0 20px; accent-color: var(--accent); }
.modal-actions { display: flex; gap: 10px; }
.modal-actions button { flex: 1; border: 0; border-radius: 9px; padding: 11px; font-weight: 700; cursor: pointer; }
.m-cancel { background: transparent; color: var(--muted); border: 1px solid var(--border) !important; }
.m-ok { background: var(--accent); color: #05121c; }
.m-ok.danger { background: var(--red); color: #fff; }

/* ── Toasts ── */
.toasts { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 8px; z-index: 40; }
.toast { background: var(--panel2); border: 1px solid var(--border); border-left: 3px solid var(--accent);
  border-radius: 9px; padding: 10px 14px; font-size: 13px; box-shadow: 0 10px 30px rgba(0,0,0,.5);
  animation: fade .2s ease; }
.toast.err { border-left-color: var(--red); }
.toast.ok { border-left-color: var(--green); }

/* ═══════════════════ RICH UI PASS (icons, fills, polish) ═══════════════════ */
svg { flex-shrink: 0; }

/* Top-right "Backend Live" status pill with a pulsing dot */
.live-pill { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px;
  background: var(--panel3); border: 1px solid var(--border); border-radius: 999px; }
.live-pill .tb-status { color: var(--text); font-weight: 600; }
#brokerDot.ok { animation: livepulse 2s infinite; }
@keyframes livepulse {
  0%   { box-shadow: 0 0 0 0 rgba(52,211,153,.55); }
  70%  { box-shadow: 0 0 0 7px rgba(52,211,153,0); }
  100% { box-shadow: 0 0 0 0 rgba(52,211,153,0); }
}

/* Control buttons — FILLED / tinted (no more ghost boxes), icon + label */
.controls button { gap: 7px; }
.controls button svg { width: 15px; height: 15px; }
.btn-set    { background: rgba(56,189,248,.16) !important;  color: var(--accent) !important; border: 1px solid rgba(56,189,248,.45) !important; }
.btn-reboot { background: rgba(245,165,36,.15) !important;  color: var(--amber) !important;  border: 1px solid rgba(245,165,36,.45) !important; }
.btn-offline{ background: rgba(148,163,184,.14) !important; color: #cdd8ec !important;         border: 1px solid var(--border) !important; }
.btn-start:hover, .btn-stop:hover { filter: brightness(1.08); }
.btn-set:hover    { background: rgba(56,189,248,.28) !important; }
.btn-reboot:hover { background: rgba(245,165,36,.26) !important; }
.btn-offline:hover{ background: rgba(148,163,184,.24) !important; }

/* Chips + pills with inline icons */
.chip { display: inline-flex; align-items: center; gap: 4px; }
.chip svg { width: 12px; height: 12px; }
.pill { display: inline-flex; align-items: center; gap: 5px; }
.pill svg { width: 12px; height: 12px; }

/* Header + landing-card icon tiles */
.gw-head-top { gap: 10px; }
.gw-head-icon, .lc-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 10px;
  background: rgba(56,189,248,.14); color: var(--accent); flex: 0 0 auto;
}
.gw-head-icon svg, .lc-icon svg { width: 20px; height: 20px; }
.lc-top { gap: 10px; }
.gw-head { background: linear-gradient(180deg, #101c33, #0e1626); }

/* Node card title icon */
.node-name { display: flex; align-items: center; gap: 8px; }
.node-name svg { width: 17px; height: 17px; color: var(--accent); }
.node { transition: border-color .15s, transform .15s; }
.node:hover { border-color: #2a3f63; }

/* "View & Control" + rail back button (icon + text) */
.lc-open { display: flex; align-items: center; justify-content: center; gap: 6px; }
.lc-open svg { width: 15px; height: 15px; }
.rail-back { display: flex; align-items: center; gap: 7px; }
.rail-back svg { width: 15px; height: 15px; }

/* ── Gateway Controls + SD Card sections (above the nodes) ── */
.section { margin-bottom: 18px; }
.section-title { display: flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700;
  letter-spacing: 1.4px; text-transform: uppercase; color: var(--muted); margin: 0 2px 12px; }
.section-title svg { width: 15px; height: 15px; color: var(--accent); }
.gc-row { display: flex; flex-wrap: wrap; gap: 8px; }
.gc { display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 9px; padding: 8px 13px; font-size: 12.5px; font-weight: 600; }
.gc:hover { border-color: var(--accent); }
.gc svg { width: 15px; height: 15px; }
.gc-blue   { background: rgba(56,189,248,.14);  color: var(--accent); border-color: rgba(56,189,248,.4); }
.gc-purple { background: rgba(168,85,247,.15);  color: #c99bf5;        border-color: rgba(168,85,247,.4); }
.gc-amber  { background: rgba(245,165,36,.15);  color: var(--amber);  border-color: rgba(245,165,36,.4); }
.gc-red    { background: rgba(244,63,94,.15);   color: #ff8091;       border-color: rgba(244,63,94,.4); }
.gc-green  { background: rgba(52,211,153,.16);  color: var(--green);  border-color: rgba(52,211,153,.42); }
.gc-green:hover  { background: rgba(52,211,153,.28); }
.gc-blue:hover   { background: rgba(56,189,248,.26); }
.gc-purple:hover { background: rgba(168,85,247,.28); }
.gc-amber:hover  { background: rgba(245,165,36,.26); }
.gc-red:hover    { background: rgba(244,63,94,.28); }
.sd-info { font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.sd-info b { color: var(--text); font-size: 15px; }
.sd-hint { font-size: 11.5px; color: var(--muted); margin-top: 8px; opacity: .8; }
.gw-response { margin-bottom: 20px; padding: 10px 12px; background: var(--panel3);
  border: 1px solid var(--border); border-radius: 9px;
  font-family: ui-monospace, 'Cascadia Mono', Consolas, monospace; font-size: 12px;
  color: var(--muted); max-height: 120px; overflow: auto; white-space: pre-wrap; word-break: break-word; }