html, body, #map { width:100%; height:100%; padding:0; margin:0;
  font-family:'Inter','Roboto','Helvetica Neue',Arial,sans-serif; }

:root{
  --navy:#0a1730; --navy2:#0e2143; --panel:#122a4f; --accent:#3b82f6; --accent2:#60a5fa;
  --ink:#e7edf7; --muted:#9fb2d0; --line:rgba(96,140,220,.22);
}

/* Executive header overlay */
.topbar{position:fixed;top:0;left:0;right:0;z-index:1200;display:flex;justify-content:space-between;
  align-items:center;gap:12px;padding:10px 18px;
  background:linear-gradient(180deg,rgba(10,23,48,.96),rgba(10,23,48,.82));
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px);color:var(--ink)}
.topbar__brand{display:flex;align-items:center;gap:12px}
.topbar__title{display:flex;flex-direction:column;line-height:1.2}
.topbar__title strong{font-size:1.02rem;font-weight:700;letter-spacing:.2px}
.topbar__title span{font-size:.78rem;color:var(--muted)}
.topbar__tags{display:flex;gap:7px}
.pill{font-size:.72rem;border:1px solid var(--line);color:var(--accent2);
  background:rgba(59,130,246,.10);padding:4px 10px;border-radius:20px}
@media (max-width:640px){.topbar__tags{display:none}}

/* Push Leaflet controls below the header */
.leaflet-top{margin-top:54px}

/* Map control cards — cohesive navy design */
.legend, .info, .leaflet-control-layers{
  padding:12px 14px;color:var(--ink);
  background:linear-gradient(160deg,rgba(18,42,79,.95),rgba(14,33,67,.95));
  border:1px solid var(--line);border-radius:12px;
  box-shadow:0 10px 28px rgba(0,0,0,.35);backdrop-filter:blur(6px)}
.legend{line-height:20px}
.legend i{float:left;width:16px;height:16px;margin-right:8px;opacity:.9;border-radius:50%}
.info{font:500 13px/17px 'Inter',Arial,sans-serif}
.info h4{margin:0 0 6px;color:var(--accent2);font-weight:700}
.leaflet-control-layers label{color:var(--ink)}
.leaflet-control-layers-toggle{filter:hue-rotate(5deg)}
.leaflet-bar a{background:var(--panel);color:var(--ink);border-bottom-color:var(--line)}
.leaflet-bar a:hover{background:#1a3straight}
.leaflet-bar a:hover{background:#183765}
.leaflet-popup-content-wrapper{background:var(--panel);color:var(--ink);border-radius:12px;
  box-shadow:0 10px 28px rgba(0,0,0,.4)}
.leaflet-popup-tip{background:var(--panel)}
.leaflet-popup-content a{color:var(--accent2)}

/* Footer credit */
.mapcredit{position:fixed;bottom:0;left:0;right:0;z-index:1200;text-align:center;
  padding:7px 12px;font-size:.8rem;color:var(--muted);
  background:linear-gradient(0deg,rgba(10,23,48,.92),rgba(10,23,48,.4));border-top:1px solid var(--line)}
.mapcredit a{color:var(--accent2);text-decoration:none}.mapcredit a:hover{text-decoration:underline}

/* Loader */
#loader{position:fixed;top:0;left:0;width:100%;height:100%;
  background:linear-gradient(160deg,rgba(10,23,48,.85),rgba(10,23,48,.75));z-index:3000;
  display:flex;flex-direction:column;justify-content:center;align-items:center;color:var(--ink)}
.spinner{border:4px solid rgba(96,140,220,.25);border-top:4px solid var(--accent);border-radius:50%;
  width:48px;height:48px;animation:spin 1s linear infinite;margin-bottom:15px}
@keyframes spin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}

/* Error dialog */
#error-message{position:fixed;inset:0;background:rgba(10,23,48,.8);z-index:4000;
  display:flex;justify-content:center;align-items:center}
.error-content{background:var(--panel);color:var(--ink);padding:24px;border-radius:14px;text-align:center;
  max-width:420px;border:1px solid var(--line);box-shadow:0 20px 50px rgba(0,0,0,.5)}
.error-content h3{color:#f87171;margin-top:0}
.error-content button{margin:12px 5px 0;padding:9px 18px;border:none;border-radius:8px;cursor:pointer;font-weight:700}
#retry-button{background:var(--accent);color:#08152e}
#use-backup-button{background:transparent;color:var(--accent2);border:1px solid var(--line)}