@import url("https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;600;700&display=swap");
:root{--font-sarabun:"Sarabun";--paper:#fff;--white:#fff;--ink:#111;--muted:#748078;--line:#d8d8d8;--soft:#f5f5f2;--signal:#e63323;--blue:#ecece8}

*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;background:var(--paper);color:var(--ink);font-family:"Sarabun Mai",var(--font-sarabun),"Leelawadee UI","Noto Sans Thai",Tahoma,sans-serif;font-optical-sizing:auto;text-rendering:optimizeLegibility}
button,input,select{font:inherit}
button,a,select{touch-action:manipulation}
.shell{height:100vh;display:flex;flex-direction:column;overflow:hidden}

header{height:72px;flex:none;padding:0 28px;display:grid;grid-template-columns:1fr auto;align-items:center;border-bottom:1px solid var(--ink);background:var(--paper);position:relative;z-index:1100}
header:before{content:"RAIL / 01";position:absolute;left:28px;top:9px;font:650 8px "Sarabun Mai",var(--font-sarabun),sans-serif;letter-spacing:.18em;color:var(--signal)}
header h1{margin:12px 0 0;font-size:16px;font-weight:650;letter-spacing:-.025em}
header nav{display:flex;align-items:center;gap:22px}
header nav button{border:1px solid var(--ink);background:transparent;color:var(--ink);padding:9px 13px;font-size:9px;font-weight:700;cursor:pointer;text-transform:uppercase;letter-spacing:.06em}
header nav button:hover{background:var(--ink);color:#fff}
header nav span{font:9px "Sarabun Mai",var(--font-sarabun),sans-serif;color:var(--muted);text-transform:uppercase}
header nav i{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--signal);margin-right:7px}

.layout{display:grid;grid-template-columns:minmax(370px,420px) 1fr;min-height:0;flex:1}
aside{padding:32px 30px 20px;background:var(--white);border-right:1px solid var(--ink);overflow:auto;scrollbar-width:thin;scrollbar-color:#aaa transparent}
.eyebrow{font:700 9px "Sarabun Mai",var(--font-sarabun),sans-serif;color:var(--signal);letter-spacing:.18em}
h2{font-size:43px;line-height:1.14;letter-spacing:-.038em;margin:18px 0 18px;font-weight:610;max-width:340px}
.lead{font-size:12px;line-height:1.65;color:var(--muted);margin:0;max-width:315px}
.stats{display:grid;grid-template-columns:1fr 1fr;border-block:1px solid var(--ink);margin:24px 0 22px}
.stats div{padding:14px 0}
.stats div+div{border-left:1px solid var(--ink);padding-left:19px}
.stats b{display:block;font:500 24px "Sarabun Mai",var(--font-sarabun),sans-serif;letter-spacing:-.05em}
.stats span,label{font-size:8px;color:var(--muted);text-transform:uppercase;letter-spacing:.11em}
label{display:block;margin:13px 0 5px;font-weight:700}
select,input{width:100%;margin-top:7px;background:var(--white);border:1px solid var(--ink);border-radius:0;padding:12px;color:var(--ink);outline:none}
select:hover,input:hover{background:#faf9f5}
select:focus,input:focus{box-shadow:inset 0 -3px var(--signal)}
.routeInfo{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:8px;border:1px solid var(--ink);border-top:0;padding:11px;background:var(--soft)}
.routeInfo span{grid-column:1/-1;font:8px "Sarabun Mai",var(--font-sarabun),sans-serif;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}
.routeInfo b{font-size:10px;font-weight:550}
.routeInfo i{color:var(--signal);font-style:normal}
.chainage{display:grid;grid-template-columns:1fr 18px 1fr;align-items:end;gap:6px}
.chainage label,.chainage input{position:relative;z-index:2;pointer-events:auto!important}
.chainage input{touch-action:auto;user-select:text;-webkit-user-select:text;caret-color:var(--signal)}
.chainage>span{text-align:center;padding-bottom:12px;color:var(--signal);font:500 16px "Sarabun Mai",var(--font-sarabun),sans-serif}
.searchBtn{width:100%;padding:13px;border:1px solid var(--ink);background:var(--ink);color:#fff;margin-top:12px;font-size:10px;font-weight:750;cursor:pointer;text-transform:uppercase;letter-spacing:.1em;transition:.15s}
.searchBtn:hover{background:var(--signal);border-color:var(--signal);color:var(--ink)}
.error{margin-top:11px;padding:11px;border-left:3px solid var(--signal);background:#ffe4dc;color:#812c1b;font-size:10px}
.hint{margin-top:17px;border-top:1px solid var(--line);padding:13px 0;font-size:9px;line-height:1.65;color:var(--muted)}
aside footer{font:8px "Sarabun Mai",var(--font-sarabun),sans-serif;color:#8d8b84;margin-top:18px;line-height:1.55}

.resultGroup{margin-top:18px}
.resultSummary,.resultTop,.cardActions{display:flex;align-items:center;justify-content:space-between;gap:8px}
.resultSummary{padding-bottom:8px;border-bottom:1px solid var(--ink)}
.resultSummary b,.resultTop b{font-size:10px}
.resultSummary span,.resultTop span{font:10px "Sarabun Mai",var(--font-sarabun),sans-serif;color:var(--signal)}
.resultCard{background:var(--white);border:1px solid var(--line);border-left:4px solid var(--line);padding:13px;margin:8px 0;cursor:pointer;transition:.15s}
.resultCard:hover,.resultCard.active{border-color:var(--ink);border-left-color:var(--signal);box-shadow:6px 6px 0 var(--soft)}
.resultRoute{font-size:8px;color:var(--muted);margin-top:5px}
.resultMeta{display:grid;gap:0;margin:12px 0;border-top:1px solid var(--line)}
.resultMeta div{display:grid;grid-template-columns:82px 1fr;gap:8px;padding:7px 0;border-bottom:1px solid var(--line)}
.resultMeta span,.popupMeta span{font:7px "Sarabun Mai",var(--font-sarabun),sans-serif;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
.resultMeta b{font-size:9px;font-weight:580;line-height:1.4}
.coords{font:12px "Sarabun Mai",var(--font-sarabun),sans-serif;margin:11px 0}
.cardActions{font:8px "Sarabun Mai",var(--font-sarabun),sans-serif;color:#77756e}
.cardActions div{display:flex;gap:5px}
.cardActions button,.cardActions a{border:1px solid var(--ink);background:none;color:var(--ink);padding:6px 8px;font-size:8px;text-decoration:none;cursor:pointer}
.cardActions button:hover,.cardActions a:hover{background:var(--ink);color:#fff}

.map{position:relative;min-width:0;min-height:0;background:#ecece8;overflow:hidden}
.leafletMap{position:absolute;inset:0;background:#ecece8}
.leaflet-container{font-family:inherit}
.map canvas{display:block;cursor:grab}
.mapTitle{position:absolute;z-index:800;left:22px;top:20px;width:min(300px,calc(100% - 170px));padding:13px 15px;background:#fffffff0;color:var(--ink);border:1px solid var(--ink);box-shadow:7px 7px 0 #1113;backdrop-filter:blur(12px)}
.mapTitle:after{content:"MAP";position:absolute;right:12px;top:10px;font:8px "Sarabun Mai",var(--font-sarabun),sans-serif;color:var(--signal)}
.mapTitle span{display:block;font:8px "Sarabun Mai",var(--font-sarabun),sans-serif;color:var(--muted);letter-spacing:.15em}
.mapTitle b{display:block;font-size:16px;margin-top:5px;letter-spacing:-.025em}
.mapTitle small{display:block;color:#666;font-size:9px;margin-top:5px}
.basemap{position:absolute;z-index:800;right:62px;top:17px;display:flex;background:#fffffff0;border:1px solid var(--ink);backdrop-filter:blur(10px)}
.basemap button{border:0;border-right:1px solid var(--ink);background:none;color:#555;padding:10px 12px;font:8px "Sarabun Mai",var(--font-sarabun),sans-serif;cursor:pointer;text-transform:uppercase}
.basemap button:last-child{border-right:0}
.basemap button.active{background:var(--ink);color:#fff}
.loading{position:absolute;z-index:900;inset:0;display:grid;place-items:center;background:var(--blue);font:10px "Sarabun Mai",var(--font-sarabun),sans-serif;color:var(--muted)}
.leaflet-control-zoom{margin-top:17px!important;margin-right:16px!important;border:1px solid var(--ink)!important;border-radius:0!important;overflow:hidden;box-shadow:none!important}
.leaflet-control-zoom a{width:34px!important;height:34px!important;line-height:34px!important;background:#fffffff0!important;color:var(--ink)!important;border-color:var(--ink)!important}
.leaflet-control-zoom a:hover{background:var(--signal)!important}
.leaflet-control-attribution{background:#ffffffe6!important;color:#555!important;font-size:7px!important}
.leaflet-control-attribution a{color:#333!important}
.leaflet-tile{filter:none}
.leaflet-fade-anim .leaflet-tile{will-change:opacity}
.resultMarker{display:grid!important;place-items:center;background:transparent!important;border:0!important;cursor:pointer!important;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.resultMarkerDot{display:block;width:15px;height:15px;border:3px solid var(--ink);border-radius:50%;background:var(--signal);box-shadow:0 0 0 3px #fff,0 7px 18px #0007;transition:transform .15s}
.resultMarkerDot.active{transform:scale(1.25)}

.mapPopup{position:absolute;z-index:1000;width:306px;padding:18px;background:#fffffff7;color:var(--ink);border:1px solid var(--ink);box-shadow:9px 9px 0 #1115;backdrop-filter:blur(18px);animation:popupIn .15s ease-out;pointer-events:auto}
.mapPopup:before{content:"";position:absolute;left:-7px;top:92px;width:13px;height:13px;background:#fff;transform:rotate(45deg);border-left:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.mapPopup .popupKicker{display:block;font:700 8px "Sarabun Mai",var(--font-sarabun),sans-serif;letter-spacing:.14em;color:#d94325;text-transform:uppercase}
.mapPopup strong{display:block;font-size:22px;letter-spacing:-.045em;margin:6px 0}
.mapPopup small{display:block;font-size:8px;color:#666}
.popupClose{position:absolute;right:10px;top:7px;border:0;background:none;color:#555;font-size:21px;cursor:pointer}
.popupMeta{margin:13px 0;border-top:1px solid var(--line)}
.popupMeta div{display:grid;grid-template-columns:82px 1fr;gap:8px;padding:7px 0;border-bottom:1px solid var(--line)}
.popupMeta b{font-size:9px;font-weight:600;line-height:1.35}
.popupCoords{display:grid;grid-template-columns:36px 1fr;gap:6px 8px;margin:13px 0;padding:10px;background:var(--soft);font:11px "Sarabun Mai",var(--font-sarabun),sans-serif}
.popupCoords span{font-size:7px;color:#777;align-self:center}
.popupActions{display:grid;grid-template-columns:1fr 1.25fr;gap:7px}
.popupActions button,.popupActions a{border:1px solid var(--ink);padding:9px 7px;font-size:9px;text-align:center;text-decoration:none;cursor:pointer}
.popupActions button{background:var(--ink);color:#fff}
.popupActions a{color:var(--ink);background:transparent}
.popupActions a:hover{background:var(--signal)}
@keyframes popupIn{from{opacity:0;transform:translateY(5px)}
to{opacity:1;transform:none}
}

.backdrop{position:fixed;inset:0;background:#111b;z-index:1500;display:grid;place-items:center;padding:20px}
.donate{position:relative;width:min(360px,100%);background:var(--paper);color:var(--ink);padding:31px;text-align:center;border:1px solid var(--ink);border-top:5px solid var(--signal);box-shadow:14px 14px 0 #111}
.donate>span{font:8px "Sarabun Mai",var(--font-sarabun),sans-serif;letter-spacing:.18em}
.donate h3{font-size:25px;letter-spacing:-.04em;margin:10px 0}
.donate p{font-size:11px;line-height:1.55;color:#666;margin:0 auto 17px}
.donate img{display:block;width:220px;height:220px;object-fit:contain;margin:auto;border:10px solid #fff}
.donate small{display:block;color:#777;font-size:9px;margin-top:12px}
.close{position:absolute;right:10px;top:7px;border:0;background:none;font-size:25px;cursor:pointer}

/* Readability scale */
header h1{font-size:18px}
header nav button,header nav span{font-size:11px}
.eyebrow{font-size:11px}
.lead{font-size:15px;line-height:1.7}
.stats span,label{font-size:11px}
select,input{font-size:16px}
.routeInfo span{font-size:10px}
.routeInfo b{font-size:13px}
.searchBtn{font-size:13px}
.error{font-size:13px}
.hint{font-size:12px}
aside footer{font-size:10px}
.resultSummary b,.resultTop b{font-size:13px}
.resultSummary span,.resultTop span{font-size:13px}
.resultRoute{font-size:11px}
.resultMeta span,.popupMeta span{font-size:10px}
.resultMeta b,.popupMeta b{font-size:12px}
.coords{font-size:14px}
.cardActions{font-size:11px}
.cardActions button,.cardActions a{font-size:11px}
.mapTitle span,.mapTitle:after{font-size:10px}
.mapTitle small{font-size:11px;line-height:1.35}
.basemap button{font-size:10px}
.mapPopup .popupKicker{font-size:10px}
.mapPopup small{font-size:11px;line-height:1.4}
.popupCoords{font-size:13px}
.popupCoords span{font-size:9px}
.popupActions button,.popupActions a{font-size:11px}
.donate>span{font-size:10px}
.donate p{font-size:14px}
.donate small{font-size:11px}

@media(max-width:760px){.shell{height:auto;min-height:100vh;overflow:visible}
header{height:64px;padding:0 15px}
header:before{left:15px;top:8px}
header h1{font-size:16px;margin-top:11px}
header nav{gap:0}
header nav span{display:none}
header nav button{padding:8px;font-size:10px}
.layout{display:flex;flex-direction:column}
.map{order:1;height:58vh;min-height:410px}
.layout aside{order:2;border:0;border-top:1px solid var(--ink);padding:27px 19px}
h2{font-size:37px;max-width:300px}
.mapTitle{left:13px;top:13px;width:min(235px,calc(100% - 152px));padding:10px 11px;box-shadow:5px 5px 0 #1113}
.mapTitle b{font-size:16px}
.mapTitle small{max-width:170px}
.basemap{right:50px;top:12px}
.basemap button{padding:9px 8px}
.leaflet-control-zoom{margin-top:12px!important;margin-right:9px!important}
.mapPopup{width:min(306px,calc(100% - 24px));box-shadow:6px 6px 0 #1115}
.mapPopup:before{display:none}
.donate{padding:27px 20px}
.donate img{width:205px;height:205px}
}