:root {
  --bg: #f4f6f8; --card: #fff; --text: #1a1d21; --muted: #6b7280; --line: #e3e6ea;
  --primary: #1565c0; --primary-text: #fff; --danger: #c62828; --ok: #2e7d32; --warn: #ef6c00;
  --sos: #d32f2f; --radius: 12px; --panel-w: 360px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121417; --card: #1c1f24; --text: #e8eaed; --muted: #9aa0a6; --line: #2c3036; --primary: #64a4ea; --primary-text: #0b1220; }
  .leaflet-tile { filter: brightness(.85) contrast(1.05); }
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--text); background: var(--bg); }
[hidden] { display: none !important; }
a { color: var(--primary); }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 8px 14px; }
button.primary { background: var(--primary); color: var(--primary-text); border-color: transparent; }
button.danger { color: var(--danger); }
button.small-btn { padding: 6px 12px; }
input, select { border: 1px solid var(--line); background: var(--card); border-radius: 10px; padding: 9px 12px; width: 100%; }
.muted { color: var(--muted); } .small { font-size: 13px; } .error { color: var(--danger); }
.spacer { flex: 1; } .row { display: flex; gap: 8px; align-items: center; }
.card { background: var(--card); border-radius: var(--radius); padding: 20px; box-shadow: 0 2px 12px rgba(0,0,0,.08); }
.field { display: block; margin: 12px 0; } .field span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }

.screen { height: 100%; }
#login, #approve { display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 380px; text-align: center; }
.login-card .logo { width: 72px; height: 72px; border-radius: 18px; }
.login-card h1 { margin: 8px 0 4px; font-size: 26px; }
.login-card .field { text-align: left; }
#code { text-align: center; font-size: 24px; letter-spacing: 6px; text-transform: uppercase; font-family: ui-monospace, Menlo, monospace; }
#loginBtn { width: 100%; margin-top: 6px; padding: 12px; font-size: 16px; }

#main { display: flex; flex-direction: column; }
.topbar { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; } .brand img { width: 26px; height: 26px; border-radius: 7px; }
.chip { padding: 5px 10px; border-radius: 999px; font-size: 13px; width: auto; }
#codeChip { font-family: ui-monospace, Menlo, monospace; letter-spacing: 2px; }

.sos { display: flex; align-items: center; gap: 10px; padding: 10px 14px; background: var(--sos); color: #fff; font-weight: 600; }
.sos button { background: #fff; color: var(--sos); border: none; }
.sos-main { flex: 1; min-width: 0; }
.sos-note { font-size: 13px; font-weight: 400; opacity: .9; }
#sosAnswer { font-weight: 700; }

.layout { flex: 1; display: grid; grid-template-columns: var(--panel-w) 1fr; min-height: 0; }
.panel { display: flex; flex-direction: column; min-height: 0; background: var(--card); border-right: 1px solid var(--line); }
.tabs { display: flex; border-bottom: 1px solid var(--line); }
.tabs button { flex: 1; border: none; border-radius: 0; background: none; padding: 10px; color: var(--muted); border-bottom: 2px solid transparent; }
.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab { display: none; overflow: auto; flex: 1; padding: 8px; } .tab.active { display: block; }
#map { min-height: 0; }

.member { display: flex; gap: 10px; padding: 10px; border-radius: 10px; cursor: pointer; border: 1px solid transparent; }
.member:hover { background: var(--bg); } .member.selected { border-color: var(--primary); }
.dot { width: 12px; height: 12px; border-radius: 50%; margin-top: 6px; flex: none; }
.dot.ok { background: var(--ok); } .dot.warn { background: var(--warn); } .dot.bad { background: var(--danger); } .dot.none { background: var(--muted); }
.member .name { font-weight: 600; } .member .meta { font-size: 13px; color: var(--muted); }
.member .actions { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.member .actions button { padding: 4px 10px; font-size: 13px; border-radius: 999px; }
.member .body { flex: 1; min-width: 0; }
.ring-line { font-size: 13px; font-weight: 600; margin-top: 2px; }
.ring-line.ok { color: var(--ok); } .ring-line.bad { color: var(--danger); }
.details { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--line); font-size: 13px; overflow-wrap: anywhere; }
.details .details-title { margin-top: 6px; color: var(--muted); font-weight: 600; }
.details .bad { color: var(--danger); }

.event { padding: 8px 10px; border-bottom: 1px solid var(--line); cursor: pointer; }
.event .when { font-size: 12px; color: var(--muted); }
.event.sos { color: var(--danger); font-weight: 600; }

.zone-tools { display: flex; align-items: center; gap: 10px; padding: 4px 6px 10px; }
.zone { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 10px; cursor: pointer; }
.zone:hover { background: var(--bg); } .zone .body { flex: 1; } .zone .meta { font-size: 13px; color: var(--muted); }

.history { display: flex; align-items: center; gap: 10px; padding: 8px 12px; background: var(--card); border-top: 1px solid var(--line); }
.history input { width: auto; padding: 5px 8px; } #historyName { font-weight: 600; }

dialog { border: none; border-radius: var(--radius); padding: 0; background: transparent; max-width: 380px; width: calc(100% - 32px); }
dialog::backdrop { background: rgba(0,0,0,.4); }
dialog .card h3 { margin: 0 0 6px; }

.empty { padding: 24px 12px; text-align: center; color: var(--muted); }

/* Marker labels */
.m-label { background: var(--card); color: var(--text); border-radius: 999px; padding: 2px 8px; font-size: 12px; font-weight: 600; white-space: nowrap; box-shadow: 0 1px 4px rgba(0,0,0,.3); border: 2px solid var(--ok); transform: translate(-50%, -140%); }
.m-label.parent { border-color: var(--primary); } .m-label.warn { border-color: var(--warn); } .m-label.bad { border-color: var(--danger); }
.m-label.selected { outline: 2px solid var(--primary); }

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; grid-template-rows: 55% 1fr; }
  .panel { order: 2; border-right: none; border-top: 1px solid var(--line); }
  #map { order: 1; }
  .brand span { display: none; }
  .sos { flex-wrap: wrap; } .sos-main { flex-basis: 100%; }
}
.zone-tip { background: none; border: none; box-shadow: none; color: #2e7d32; font-weight: 600; font-size: 12px; text-shadow: 0 0 3px #fff, 0 0 3px #fff; }
.zone-tip::before { display: none; }

.join-code { font-family: ui-monospace, Menlo, monospace; font-size: 34px; letter-spacing: 8px; margin: 10px 0; text-align: center; }
.qr-card { text-align: center; } .qr-card .row { margin-top: 14px; flex-wrap: wrap; }
.qr-box { display: flex; justify-content: center; }
/* The QR must stay dark-on-white even in dark mode, or cameras fail to read it. */
.qr-box > * { background: #fff; padding: 12px; border-radius: 10px; line-height: 0; }
.qr-box img, .qr-box canvas { display: block; width: 216px; height: 216px; }