:root{
  --bg:#0e1116; --panel:#161b22; --panel2:#1c2330; --line:#2a3342;
  --text:#e8edf4; --dim:#93a0b4; --accent:#58a6ff;
  /* Okabe-Ito colorblind-safe palette */
  --c-blue:#0072B2; --c-orange:#E69F00; --c-verm:#D55E00; --c-sky:#56B4E9;
  --c-green:#009E73; --c-yellow:#F0E442; --c-pink:#CC79A7; --c-grey:#8a93a5;
  font-size:15px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body,#app{height:100%}
body{font-family:"IBM Plex Sans","IBM Plex Sans Arabic",system-ui,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}
.mono{font-family:"IBM Plex Mono",monospace}
.ar{font-family:"IBM Plex Sans Arabic","IBM Plex Sans",sans-serif}

#app{display:grid;grid-template-rows:56px 1fr;grid-template-columns:360px 1fr;
  grid-template-areas:"top top" "panel map"}
#topbar{grid-area:top;display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;background:var(--panel);border-bottom:1px solid var(--line);z-index:20}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:34px;height:34px;border:2px solid var(--accent);border-radius:8px;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:11px;color:var(--accent)}
.brand-text h1{font-size:16px;font-weight:600;line-height:1.1}
.brand-text .sub{font-size:11px;color:var(--dim)}
.topbar-right{display:flex;align-items:center;gap:14px}
#clock{font-size:12px;color:var(--dim)}
.chip-btn{background:var(--panel2);color:var(--text);border:1px solid var(--line);
  border-radius:20px;padding:7px 14px;font-size:12.5px;cursor:pointer;font-family:inherit}
.chip-btn:hover{border-color:var(--accent);color:var(--accent)}

#panel{grid-area:panel;background:var(--panel);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:10;min-height:0}
.panel-scroll{overflow-y:auto;padding:12px;flex:1}
.panel-foot{padding:8px 14px;border-top:1px solid var(--line);font-size:10.5px;color:var(--dim)}
#map{grid-area:map;position:relative}

.layer-card{background:var(--panel2);border:1px solid var(--line);border-radius:12px;
  padding:12px 14px;margin-bottom:12px}
.layer-head{display:flex;align-items:center;gap:12px}
.layer-title h2{font-size:14.5px;font-weight:600}
.layer-title .ar{font-size:11.5px;color:var(--dim)}
.layer-desc{font-size:12px;color:var(--dim);margin-top:8px;line-height:1.45}
.sub-toggles{margin-top:8px;display:flex;flex-wrap:wrap;gap:6px}
.sub-toggle{display:flex;align-items:center;gap:5px;font-size:11.5px;color:var(--text);
  background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:3px 10px;cursor:pointer;user-select:none}
.sub-toggle input{accent-color:var(--accent)}
.sub-toggle.off{opacity:.45}

.switch{position:relative;width:40px;height:22px;flex:none}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;inset:0;background:var(--line);border-radius:22px;cursor:pointer;transition:.15s}
.slider:before{content:"";position:absolute;width:16px;height:16px;left:3px;top:3px;
  background:#fff;border-radius:50%;transition:.15s}
.switch input:checked + .slider{background:var(--accent)}
.switch input:checked + .slider:before{transform:translateX(18px)}

.legend{margin-top:10px;display:none;flex-direction:column;gap:5px}
.legend.show{display:flex}
.legend-row{display:flex;align-items:center;gap:8px;font-size:11.5px;color:var(--dim)}
.swatch{width:14px;height:14px;border-radius:4px;flex:none;border:1.5px solid transparent}
.swatch.dashed{background:transparent!important;border-style:dashed}
.swatch.line{height:4px;border-radius:2px;border:none}
.swatch.dot{border-radius:50%}
.weather-status{font-size:11px;color:var(--dim);margin-top:8px}

.badge{display:inline-block;font-size:10px;font-weight:600;letter-spacing:.4px;
  border-radius:4px;padding:2px 7px;text-transform:uppercase}
.badge.official{background:#0b3d2e;color:#5ee0b0;border:1px solid #1d7a58}
.badge.secondary{background:#3d320b;color:#e0c95e;border:1px solid #7a6b1d}
.badge.indicative,.badge.derived{background:#3d1a0b;color:#e0955e;border:1px solid #7a481d}

/* popups */
.maplibregl-popup-content{background:var(--panel2)!important;color:var(--text)!important;
  border:1px solid var(--line);border-radius:10px!important;padding:14px 16px!important;
  font-family:"IBM Plex Sans","IBM Plex Sans Arabic",sans-serif;max-width:320px;box-shadow:0 8px 30px rgba(0,0,0,.5)}
.maplibregl-popup-tip{border-top-color:var(--panel2)!important;border-bottom-color:var(--panel2)!important}
.maplibregl-popup-close-button{color:var(--dim)!important;font-size:18px;right:6px;top:4px}
.pop h3{font-size:14px;margin-bottom:2px}
.pop .pop-ar{font-size:12px;color:var(--dim);margin-bottom:6px}
.pop .pop-cat{font-size:11px;color:var(--dim);margin-bottom:8px}
.pop .pop-rule{font-size:12px;line-height:1.5;margin:8px 0;color:var(--text)}
.pop .pop-src{font-size:11px;color:var(--dim);border-top:1px solid var(--line);padding-top:8px;margin-top:8px;line-height:1.6}
.pop .pop-src a{color:var(--accent);text-decoration:none}
.pop table{font-size:12px;border-collapse:collapse;margin:6px 0;width:100%}
.pop td{padding:2px 6px 2px 0;color:var(--dim)}
.pop td+td{color:var(--text)}

/* modal */
.modal{position:fixed;inset:0;background:rgba(5,8,12,.72);display:flex;align-items:center;
  justify-content:center;z-index:100;backdrop-filter:blur(3px)}
.modal.hidden{display:none}
.modal-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;
  width:min(760px,92vw);max-height:84vh;display:flex;flex-direction:column}
.modal-head{display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--line)}
.modal-head h2{font-size:16px}
.close-x{background:none;border:none;color:var(--dim);font-size:18px;cursor:pointer}
.modal-body{overflow-y:auto;padding:18px 22px;font-size:13px;line-height:1.6}
.modal-body h3{font-size:14px;margin:18px 0 6px;color:var(--accent)}
.modal-body h3:first-child{margin-top:0}
.modal-body ul{margin:4px 0 10px 18px}
.modal-body li{margin-bottom:5px;color:var(--dim)}
.modal-body li b{color:var(--text)}
.modal-body a{color:var(--accent);text-decoration:none}
.modal-body a:hover{text-decoration:underline}
.modal-body .note{background:var(--panel2);border:1px solid var(--line);border-radius:8px;
  padding:10px 14px;font-size:12.5px;color:var(--dim);margin:8px 0}

@media (max-width:860px){
  #app{grid-template-columns:1fr;grid-template-rows:56px auto 1fr;
    grid-template-areas:"top" "panel" "map"}
  #panel{max-height:38vh;border-right:none;border-bottom:1px solid var(--line)}
}