:root{
  --orange:#ff6900;
  --orange-deep:#cc5400;
  --navy:#1a0f62;
  --navy-deep:#0c0640;
  --ink:#1f1f24;
  --muted:#6b6b78;
  --bg:#f6f4ef;
  --panel:#ffffff;
  --line:#e6e3da;
  --canal:#1976d2;
  --tunnel:#7b3fbf;
  --pipe:#9aa0a6;
  --fdlev:#ff6900;
  --fdlev_tunnel:#d12a8a;
  --fdlev_140:#f4b400;
  --pump:#1a0f62;
  --gate:#0f8a44;
  --wtr_control:#b53a2b;
  --sump:#5c4a26;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,"Sukhumvit Set","IBM Plex Sans Thai","Noto Sans Thai",system-ui,sans-serif;color:var(--ink);background:var(--bg)}

/* ---------- topbar ---------- */
.topbar{
  display:flex;align-items:center;gap:16px;
  background:linear-gradient(95deg,var(--navy) 0%,var(--navy-deep) 55%,#000 100%);
  color:#fff;padding:12px 22px;border-bottom:4px solid var(--orange);
  padding-left:max(22px, env(safe-area-inset-left));
  padding-right:max(22px, env(safe-area-inset-right));
}

/* hamburger */
.menu-toggle{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:38px;height:38px;border-radius:8px;border:1px solid rgba(255,255,255,.25);
  background:rgba(255,255,255,.08);cursor:pointer;padding:0;flex:0 0 auto
}
.menu-toggle span{display:block;height:2px;width:20px;background:#fff;border-radius:2px;margin:0 auto;transition:transform .2s,opacity .2s}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.brand{display:flex;align-items:center;gap:14px;min-width:0}
.brand-mark{
  width:42px;height:42px;border-radius:10px;
  background:linear-gradient(135deg,var(--orange) 0%,#ffae57 100%);
  position:relative;flex:0 0 auto;
  box-shadow:0 4px 12px rgba(255,105,0,.35)
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:6px;
  background:repeating-linear-gradient(135deg,rgba(255,255,255,.6) 0 3px,transparent 3px 7px)
}
.brand-text{min-width:0}
.brand-text h1{margin:0;font-size:18px;letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text p{margin:2px 0 0;font-size:12px;color:#cfc9ff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.kpis{display:flex;gap:18px;margin-left:auto;align-items:center;flex-wrap:wrap}
.kpi{display:flex;flex-direction:column;align-items:flex-end;line-height:1.1;flex:0 0 auto}
.kpi-num{font-size:20px;font-weight:700;color:#fff}
.kpi-lbl{font-size:11px;color:#cfc9ff;text-transform:uppercase;letter-spacing:.4px}

/* sidebar close button (mobile only) */
.sidebar-close{
  display:none;position:absolute;top:8px;right:8px;
  width:36px;height:36px;border-radius:50%;border:none;background:#fff;
  font-size:16px;color:var(--navy);cursor:pointer;
  box-shadow:0 2px 8px rgba(0,0,0,.12);z-index:5
}

/* scrim */
.scrim{
  position:fixed;inset:0;background:rgba(0,0,0,.45);
  z-index:1050;opacity:0;pointer-events:none;transition:opacity .25s
}
.scrim.is-open{opacity:1;pointer-events:auto}

/* ---------- layout (desktop) ---------- */
.app{
  display:grid;grid-template-columns:340px 1fr;
  height:calc(100dvh - 70px);min-height:0;position:relative
}
.sidebar{overflow-y:auto;border-right:1px solid var(--line);background:#fff;min-height:0;position:relative}
.map-wrap{position:relative;min-height:0;height:100%;width:100%}
#map{height:100%;width:100%;background:#dde6ec;min-height:0}

/* mobile-only content section hidden on desktop */
.mobile-content{display:none}

.panel{padding:16px 18px;border-bottom:1px solid var(--line)}
.panel h2{margin:0 0 10px;font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--navy)}
.panel h2 small{font-weight:400;color:var(--muted);text-transform:none;letter-spacing:0;margin-left:6px}
.hint{font-size:11px;color:var(--muted);margin:0 0 8px}

/* ---------- layers ---------- */
.layer-list{list-style:none;padding:0;margin:0}
.layer-list li{margin:0 0 6px}
.layer-list label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:13px;padding:4px 0}
.layer-list input{accent-color:var(--orange)}
.cnt{margin-left:auto;font-variant-numeric:tabular-nums;color:var(--muted);font-size:11px}

.sw{display:inline-block;width:14px;height:14px;border-radius:50%;flex:0 0 auto}
.sw-canal{border-radius:2px;height:5px;width:18px;background:var(--canal)}
.sw-tunnel{border-radius:2px;height:5px;width:18px;background:var(--tunnel)}
.sw-fdlev{background:var(--fdlev);box-shadow:0 0 0 2px #fff,0 0 0 3px var(--fdlev)}
.sw-fdlev_tunnel{background:var(--fdlev_tunnel);box-shadow:0 0 0 2px #fff,0 0 0 3px var(--fdlev_tunnel)}
.sw-fdlev_140{background:var(--fdlev_140);box-shadow:0 0 0 2px #fff,0 0 0 3px var(--fdlev_140)}
.sw-pump{background:var(--pump)}
.sw-gate{background:var(--gate);border-radius:2px}
.sw-wtr_control{background:var(--wtr_control)}
.sw-sump{background:var(--sump);border-radius:2px}

/* ---------- near-me ---------- */
.near-panel{background:linear-gradient(180deg,#fff8f0 0%,#fff 60%)}
.near-actions{display:flex;gap:8px;margin-bottom:10px}
.btn{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:8px 10px;border-radius:8px;font-size:13px;font-weight:600;
  cursor:pointer;border:1px solid transparent;transition:all .15s;
  font-family:inherit}
.btn .ico{font-size:14px}
.btn-primary{background:var(--orange);color:#fff;border-color:var(--orange-deep)}
.btn-primary:hover{background:var(--orange-deep)}
.btn-secondary{background:#fff;color:var(--navy);border-color:var(--navy)}
.btn-secondary:hover{background:var(--navy);color:#fff}
.btn.is-armed{background:var(--navy);color:#fff;animation:pulse 1.4s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(26,15,98,.5)}50%{box-shadow:0 0 0 6px rgba(26,15,98,0)}}

.radius-picker{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
.radius-label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-right:2px}
.r-btn{flex:1;min-width:50px;padding:5px 8px;font-size:11.5px;border-radius:6px;
  border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;font-family:inherit}
.r-btn:hover{border-color:var(--orange)}
.r-btn.is-active{background:var(--orange);color:#fff;border-color:var(--orange-deep)}

.near-status{padding:8px 10px;border-radius:8px;background:#fff;border:1px solid var(--line);
  font-size:12px;color:var(--ink);margin-bottom:10px;line-height:1.5}
.near-status.is-error{background:#fff0f0;border-color:#f0c2c2;color:#a13030}
.near-status .ns-coord{color:var(--muted);font-variant-numeric:tabular-nums;font-size:11px;display:block;margin-top:2px}

.near-results{max-height:380px;overflow-y:auto;border:1px solid var(--line);border-radius:8px;background:#fff}
.near-group{border-bottom:1px solid var(--line)}
.near-group:last-child{border-bottom:none}
.near-group-head{display:flex;align-items:center;gap:8px;padding:6px 10px;
  background:#fafaf6;font-size:11px;text-transform:uppercase;letter-spacing:.4px;font-weight:600;color:var(--navy)}
.near-group-head .gcnt{margin-left:auto;color:var(--muted);font-weight:500}
.near-group-head .gdot{width:10px;height:10px;border-radius:50%;flex:0 0 auto}
.near-item{display:grid;grid-template-columns:1fr auto;gap:6px;align-items:baseline;
  padding:7px 10px 7px 28px;border-top:1px solid var(--line);cursor:pointer;font-size:12.5px}
.near-item:hover{background:#fff5ea}
.near-item .ni-name{color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.near-item .ni-sub{font-size:10.5px;color:var(--muted);grid-column:1 / -1}
.near-item .ni-dist{color:var(--orange-deep);font-weight:600;font-variant-numeric:tabular-nums}
.near-empty{padding:14px 10px;text-align:center;color:var(--muted);font-size:12px}

/* user/pick marker */
.user-marker{display:block;width:18px;height:18px;border-radius:50%;
  background:#2a7af0;box-shadow:0 0 0 4px rgba(42,122,240,.25),0 0 0 2px #fff inset}
.pick-marker{display:block;width:18px;height:18px;border-radius:50%;
  background:#ff6900;box-shadow:0 0 0 4px rgba(255,105,0,.25),0 0 0 2px #fff inset}

/* ---------- search ---------- */
.search-input,.district-filter{
  width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:8px;
  font-size:13px;background:#fafaf6;color:var(--ink);outline:none;margin-bottom:8px;
  font-family:inherit
}
.search-input:focus,.district-filter:focus{border-color:var(--orange);background:#fff}

/* ---------- pipe stats ---------- */
.pipe-list{max-height:300px;overflow-y:auto;border:1px solid var(--line);border-radius:8px;background:#fafaf6}
.pipe-row{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:center;padding:8px 10px;border-bottom:1px solid var(--line);font-size:12px}
.pipe-row:last-child{border-bottom:none}
.pipe-row .pname{font-weight:500}
.pipe-row .pkm{font-variant-numeric:tabular-nums;color:var(--orange-deep);font-weight:600}
.pipe-row .pcnt{font-variant-numeric:tabular-nums;color:var(--muted)}
.pipe-row.is-active{background:#fff5ea}

/* ---------- meta ---------- */
.meta-list{list-style:none;padding:0;margin:0;font-size:12px;color:var(--muted);line-height:1.7}
.meta-list em{color:var(--navy);font-style:normal;font-weight:600}
.meta-list strong{color:var(--ink)}

/* ---------- leaflet popup ---------- */
.leaflet-popup-content-wrapper{border-radius:10px;border:1px solid var(--line);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.leaflet-popup-content{margin:12px 14px;font-size:13px;line-height:1.5;min-width:200px}
.pp-title{font-size:14px;font-weight:700;color:var(--navy);margin:0 0 4px}
.pp-tag{display:inline-block;font-size:10px;text-transform:uppercase;letter-spacing:.5px;padding:2px 6px;border-radius:4px;background:var(--orange);color:#fff;margin-bottom:6px}
.pp-tag.canal{background:var(--canal)}
.pp-tag.tunnel{background:var(--tunnel)}
.pp-tag.fdlev{background:var(--fdlev)}
.pp-tag.fdlev_tunnel{background:var(--fdlev_tunnel)}
.pp-tag.fdlev_140{background:var(--fdlev_140);color:#1f1f24}
.pp-tag.pump{background:var(--pump)}
.pp-tag.gate{background:var(--gate)}
.pp-tag.wtr_control{background:var(--wtr_control)}
.pp-tag.sump{background:var(--sump)}
.pp-kv{display:grid;grid-template-columns:90px 1fr;gap:4px 10px;margin-top:6px}
.pp-kv dt{color:var(--muted);font-size:11px}
.pp-kv dd{margin:0;font-size:12px;color:var(--ink);font-variant-numeric:tabular-nums}

/* ---------- map overlays (hidden on desktop) ---------- */
.map-ovl{display:none}

/* ---------- responsive ---------- */
/* tablet & narrow desktop */
@media (max-width: 1100px){
  .brand-text p{display:none}
  .kpis{gap:14px}
  .kpi-num{font-size:18px}
  .kpi-lbl{font-size:10px}
}

/* ===== mobile (≤760px) ===== */
@media (max-width: 760px){
  .topbar{padding:10px 14px;gap:10px;flex-wrap:wrap}
  .menu-toggle{display:flex}
  .brand-mark{width:34px;height:34px;border-radius:8px}
  .brand-text h1{font-size:15px;letter-spacing:.1px}

  /* KPIs become horizontally scrollable strip */
  .kpis{
    order:3;width:100%;margin-left:0;flex-wrap:nowrap;overflow-x:auto;
    gap:14px;padding:6px 2px 2px;scrollbar-width:none;-webkit-overflow-scrolling:touch
  }
  .kpis::-webkit-scrollbar{display:none}
  .kpi{align-items:flex-start;flex:0 0 auto;min-width:60px}
  .kpi-num{font-size:16px}
  .kpi-lbl{font-size:10px}

  /* app stacks: map area + content panel; sidebar becomes drawer */
  .app{
    display:flex;flex-direction:column;
    height:calc(100dvh - 110px);overflow:hidden
  }
  .map-wrap{flex:0 0 58vh;min-height:300px;width:100%}
  #map{height:100%;width:100%}

  .sidebar{
    position:fixed;top:0;left:0;bottom:0;
    width:min(86vw, 360px);max-height:100dvh;
    z-index:1100;background:#fff;
    transform:translateX(-100%);transition:transform .28s ease;
    box-shadow:6px 0 24px rgba(0,0,0,.18);
    padding-top:env(safe-area-inset-top);
    padding-bottom:env(safe-area-inset-bottom);
    border-right:none
  }
  .sidebar.is-open{transform:translateX(0)}
  .sidebar-close{display:flex;align-items:center;justify-content:center}

  /* hide layer + near-me panels in sidebar drawer — they're moved to map overlays */
  #layer-panel, #near-panel{display:none}

  .panel{padding:14px 16px}
  .panel h2{font-size:12px}

  /* mobile content area below the map */
  .mobile-content{
    display:flex;flex-direction:column;
    flex:1 1 auto;min-height:0;
    background:var(--bg);overflow-y:auto;
    border-top:1px solid var(--line);
    padding:10px 14px 16px;
    padding-bottom:max(16px, env(safe-area-inset-bottom))
  }
  .mc-header{
    display:flex;align-items:baseline;gap:8px;padding:0 2px 8px
  }
  .mc-title{font-size:13px;font-weight:700;color:var(--navy);text-transform:uppercase;letter-spacing:.5px}
  .mc-hint{font-size:11px;color:var(--muted);margin-left:auto}
  .mobile-content.is-empty .mc-hint{color:var(--muted)}
  .mobile-content:not(.is-empty) .mc-hint{display:none}

  /* near-results spans available height on mobile */
  .near-results{max-height:none}
  .pipe-list{max-height:240px}

  /* near-actions in overlay — vertical stack */
  .map-ovl-bl .near-actions{
    flex-direction:column;gap:8px;margin:0
  }
  .map-ovl-bl .btn{
    width:100%;flex:none;padding:11px 16px;font-size:14px;
    box-shadow:0 6px 18px rgba(0,0,0,.25),0 2px 6px rgba(0,0,0,.15);
    backdrop-filter:saturate(140%)
  }
  .map-ovl-bl #near-pick{background:#fff;color:var(--navy);border:1px solid var(--navy)}

  /* map overlays visible on mobile */
  .map-ovl{display:block}
  /* layer panel sits BELOW leaflet's basemap toggle (which is top-right by default) */
  .map-ovl-tr{
    position:absolute;top:58px;right:10px;z-index:600;
    max-width:calc(100vw - 24px)
  }
  /* near-me buttons centered horizontally */
  .map-ovl-bl{
    position:absolute;left:50%;bottom:14px;z-index:600;
    bottom:max(14px, calc(env(safe-area-inset-bottom) + 6px));
    transform:translateX(-50%);
    width:min(280px, calc(100vw - 110px))
  }

  /* collapsible layer panel on map */
  .ovl-collapse{
    background:#fff;border:1px solid var(--line);border-radius:12px;
    box-shadow:0 6px 18px rgba(0,0,0,.18);overflow:hidden;
    max-width:240px
  }
  .ovl-summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:center;gap:8px;
    padding:9px 12px;font-size:13px;font-weight:600;color:var(--navy);
    user-select:none
  }
  .ovl-summary::-webkit-details-marker{display:none}
  .ovl-summary::after{
    content:"";width:8px;height:8px;border-right:2px solid var(--navy);border-bottom:2px solid var(--navy);
    transform:rotate(45deg);margin-left:6px;transition:transform .2s
  }
  .ovl-collapse[open] .ovl-summary::after{transform:rotate(-135deg)}
  .ovl-ico{font-size:14px;line-height:1}
  .ovl-count{margin-left:auto;font-size:11px;color:var(--muted);font-weight:500}
  .ovl-body{
    max-height:50vh;overflow-y:auto;padding:6px 12px 12px;
    border-top:1px solid var(--line)
  }
  .ovl-body .layer-list label{font-size:12.5px;padding:5px 0}
  .ovl-body .cnt{font-size:10.5px}

  /* leaflet zoom controls — move to right since we use bottom-left for our buttons */
  .leaflet-top.leaflet-left{top:auto !important;bottom:14px !important;right:10px !important;left:auto !important}
  .leaflet-control-zoom{box-shadow:0 4px 12px rgba(0,0,0,.18)}
}

/* very small phones */
@media (max-width: 380px){
  .brand-text h1{font-size:14px}
  .kpi-num{font-size:15px}
  .map-ovl-bl{width:min(220px, calc(100vw - 110px))}
  .map-ovl-bl .btn{font-size:13px;padding:10px 12px}
  .ovl-summary{padding:8px 10px;font-size:12px}
}

/* landscape phones — same as mobile pattern but smaller heights */
@media (max-width: 900px) and (orientation: landscape) and (max-height: 500px){
  .kpis{display:none}
  .brand-text p{display:none}
  .menu-toggle{display:flex}
  .app{display:flex;flex-direction:column;height:calc(100dvh - 56px);overflow:hidden}
  .map-wrap{flex:1 1 auto;min-height:0}
  .mobile-content{flex:0 0 36vh;min-height:160px}
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;
    width:min(70vw, 360px);max-height:100dvh;
    z-index:1100;background:#fff;
    transform:translateX(-100%);transition:transform .28s ease;
    box-shadow:6px 0 24px rgba(0,0,0,.18);border-right:none
  }
  .sidebar.is-open{transform:translateX(0)}
  .sidebar-close{display:flex;align-items:center;justify-content:center}
  #layer-panel, #near-panel{display:none}
  .map-ovl{display:block}
  .map-ovl-tr{position:absolute;top:58px;right:10px;z-index:600;max-width:60vw}
  .map-ovl-bl{position:absolute;left:50%;bottom:14px;z-index:600;transform:translateX(-50%);width:min(280px,60vw)}
  .map-ovl-bl .near-actions{flex-direction:column;gap:6px;margin:0}
  .map-ovl-bl .btn{width:100%;flex:none;padding:9px 12px;font-size:13px;box-shadow:0 6px 18px rgba(0,0,0,.25)}
  .map-ovl-bl #near-pick{background:#fff;color:var(--navy);border:1px solid var(--navy)}
  .ovl-collapse{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,.18);overflow:hidden;max-width:240px}
  .ovl-summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:8px;padding:8px 12px;font-size:12.5px;font-weight:600;color:var(--navy);user-select:none}
  .ovl-summary::-webkit-details-marker{display:none}
  .ovl-summary::after{content:"";width:8px;height:8px;border-right:2px solid var(--navy);border-bottom:2px solid var(--navy);transform:rotate(45deg);margin-left:6px;transition:transform .2s}
  .ovl-collapse[open] .ovl-summary::after{transform:rotate(-135deg)}
  .ovl-ico{font-size:14px;line-height:1}
  .ovl-count{margin-left:auto;font-size:11px;color:var(--muted);font-weight:500}
  .ovl-body{max-height:60vh;overflow-y:auto;padding:6px 12px 12px;border-top:1px solid var(--line)}
  .leaflet-top.leaflet-left{top:auto !important;bottom:14px !important;right:10px !important;left:auto !important}
}

/* marker cluster style override */
.marker-cluster-small{background:rgba(255,105,0,.25)}
.marker-cluster-small div{background:rgba(255,105,0,.85);color:#fff}
.marker-cluster-medium{background:rgba(26,15,98,.25)}
.marker-cluster-medium div{background:rgba(26,15,98,.85);color:#fff}
.marker-cluster-large{background:rgba(15,138,68,.25)}
.marker-cluster-large div{background:rgba(15,138,68,.9);color:#fff}