:root {
  --bg: #020617;
  --panel: #0f172a;
  --panel-2: #020617;
  --border: #1f2937;
  --text: #ffffff;
  --muted: #94a3b8;
  --green: #22c55e;
  --green-soft: rgba(34,197,94,.16);
  --red: #ef4444;
  --red-soft: rgba(239,68,68,.16);
  --neutral: #64748b;
  --neutral-soft: rgba(100,116,139,.16);
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin:0; padding:0; background: var(--bg); }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, rgba(34,197,94,.05), transparent 25%), var(--bg);
}
.app-shell {
  width: min(900px, 100%);
  margin: 0 auto;
  padding: max(14px, env(safe-area-inset-top)) 14px max(24px, env(safe-area-inset-bottom));
}
.topbar {
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  background: rgba(2,6,23,.88);
  backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 10;
  padding: 10px 0 14px;
}
.brand-block { display:flex; flex-direction:column; gap:10px; min-width:0; }
.brand-logo { display:block; width: min(220px, 100%); height:auto; }
h1 { margin:0; font-size: clamp(30px, 4vw, 42px); line-height:1.04; }
.refresh-btn {
  min-height: 48px; min-width: 136px; border-radius: 16px; border: 1px solid rgba(34,197,94,.28);
  background: rgba(34,197,94,.08); color: var(--text); font-size: 16px; font-weight: 600; padding: 12px 16px; cursor:pointer;
}
.status-bar {
  display: inline-flex; align-items:center; gap: 10px; border: 1px solid var(--border); border-radius: 999px;
  padding: 10px 14px; color: var(--muted); background: rgba(255,255,255,.03); margin: 4px 0 16px;
}
.status-dot { width:10px; height:10px; border-radius:999px; background: var(--green); box-shadow: 0 0 0 6px rgba(34,197,94,.15); }
.sites { display:grid; gap: 14px; }
.site-card { border:1px solid var(--border); border-radius: 28px; overflow:hidden; background: var(--panel); box-shadow: 0 14px 30px rgba(0,0,0,.22); }
.site-head { appearance:none; width:100%; border:0; background:transparent; color: inherit; display:flex; align-items:center; justify-content:space-between; gap:12px; padding: 18px; text-align:left; cursor:pointer; }
.site-head__text { min-width:0; }
.site-title-row { display:flex; align-items:center; gap:10px; font-size: 24px; font-weight:700; }
.site-pin { width:12px; height:12px; border-radius:999px; background: var(--green); box-shadow: 0 0 12px rgba(34,197,94,.55); }
.site-summary { margin-top: 4px; color: #cbd5e1; font-size: 18px; }
.site-toggle { min-width: 40px; height: 40px; display:grid; place-items:center; border-radius:999px; background:#111827; border:1px solid #334155; font-size: 24px; line-height:1; }
.site-content { display:none; border-top:1px solid var(--border); padding: 12px; gap: 10px; }
.site-card.open .site-content { display:grid; }
.charger-row, .empty-note {
  min-height: 88px; display:flex; align-items:center; gap:14px; border-radius: 24px; padding: 14px; background: var(--panel-2); border:1px solid var(--border);
}
.charger-light { width: 54px; height: 54px; border-radius: 999px; flex:0 0 auto; }
.charger-row.free .charger-light { background: var(--green); box-shadow: 0 0 0 10px rgba(34,197,94,.18), 0 0 18px rgba(34,197,94,.45); }
.charger-row.busy .charger-light { background: var(--red); box-shadow: 0 0 0 10px rgba(239,68,68,.18), 0 0 18px rgba(239,68,68,.45); }
.charger-row.unknown .charger-light { background: var(--neutral); box-shadow: 0 0 0 10px var(--neutral-soft); }
.charger-name { flex:1; min-width:0; font-size: 20px; font-weight: 650; line-height: 1.15; }
.charger-state { border-radius: 999px; padding: 8px 12px; font-size: 15px; font-weight: 700; border:1px solid transparent; white-space:nowrap; }
.charger-row.free .charger-state { background: var(--green-soft); color: #86efac; border-color: rgba(34,197,94,.28); }
.charger-row.busy .charger-state { background: var(--red-soft); color: #fca5a5; border-color: rgba(239,68,68,.28); }
.charger-row.unknown .charger-state { background: var(--neutral-soft); color: #cbd5e1; border-color: rgba(100,116,139,.28); }
.empty-note { color: var(--muted); justify-content:center; text-align:center; border-style:dashed; }
@media (max-width: 639px) {
  .topbar { flex-direction: column; align-items: stretch; }
  .refresh-btn { width:100%; }
  .site-title-row { font-size: 23px; }
  .site-summary { font-size: 17px; }
  .charger-row, .empty-note { min-height: 84px; }
  .charger-light { width: 46px; height: 46px; }
  .charger-name { font-size: 19px; }
  .charger-state { font-size: 14px; }
}