/* ล้านนาเริงปอย Joyful Lanna — mobile-first responsive stylesheet */
:root{
  --bg:#fffdf9; --surface:#ffffff; --surface-2:#f7f2fa; --ink:#1f2a5c; --ink-soft:#505a85; --line:#e6e1ee;
  --purple:#8b2f8f; --purple-d:#6d226f; --orange:#e2532a; --teal:#0a6b68; --gold:#f5bd2e;
  --on-accent:#fff; --shadow:0 6px 24px rgba(31,42,92,.08); --radius:16px;
  --display:"Mitr","Anuphan","Leelawadee UI","Thonburi",sans-serif;
  --body:"Anuphan","Leelawadee UI","Thonburi","Noto Sans Thai",sans-serif;
  --gutter:clamp(16px,4vw,32px); --hdr:64px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#14162a; --surface:#1c1f37; --surface-2:#23274a; --ink:#eceaf5; --ink-soft:#b6b5cd; --line:#34385a;
    --purple:#c778cb; --purple-d:#d99adc; --orange:#f07a52; --teal:#47bdb7; --gold:#f5c74f; --on-accent:#14162a;
    --shadow:0 6px 24px rgba(0,0,0,.35); color-scheme:dark}
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hdr) + 12px);-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 clamp(16px,1.1vw + 13px,18px)/1.75 var(--body);overflow-wrap:break-word}
img{max-width:100%;height:auto;display:block}
a{color:var(--purple)}
h1,h2,h3{font-family:var(--display);font-weight:500;line-height:1.3;margin:0}
p{margin:0 0 .8em}
:focus-visible{outline:3px solid var(--orange);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:1160px;margin:0 auto;padding-inline:var(--gutter)}
.muted{color:var(--ink-soft)}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--bg);padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}

/* ---------- header / nav ---------- */
.top{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top)}
.top-in{display:flex;align-items:center;gap:12px;min-height:var(--hdr)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);min-width:0}
.brand-mark{flex:none;width:34px;height:34px;border-radius:10px;background:conic-gradient(var(--orange) 0 25%,var(--purple) 0 50%,var(--teal) 0 75%,var(--gold) 0);position:relative}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:50%;background:var(--bg)}
.brand-text{font-family:var(--display);font-size:clamp(16px,4.2vw,19px);line-height:1.2;display:flex;flex-direction:column;min-width:0}
.brand-text small{font-family:var(--body);font-size:12px;color:var(--ink-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.burger{margin-left:auto;flex:none;width:44px;height:44px;border:1.5px solid var(--line);background:var(--surface);border-radius:12px;display:grid;place-content:center;gap:5px;cursor:pointer}
.burger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav{position:absolute;left:0;right:0;top:100%;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:8px var(--gutter) 16px;display:none;flex-direction:column}
.nav.open{display:flex}
.nav a{padding:13px 14px;border-radius:12px;text-decoration:none;color:var(--ink);font-weight:500}
.nav a:hover{background:var(--surface-2)}
.nav a[aria-current="page"]{background:var(--purple);color:var(--on-accent)}
@media (min-width:880px){
  .burger{display:none}
  .nav{position:static;display:flex;flex-direction:row;margin-left:auto;background:none;border:0;box-shadow:none;padding:0;gap:2px}
  .nav a{padding:8px 14px;font-size:15.5px;border-radius:999px}
}

/* ---------- buttons / chips ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 22px;border-radius:999px;border:1.5px solid var(--ink);color:var(--ink);background:transparent;text-decoration:none;font:500 16px/1.2 var(--body);cursor:pointer;transition:transform .15s,filter .15s}
.btn:hover{transform:translateY(-1px);filter:brightness(1.06)}
.btn.solid{background:var(--purple);border-color:var(--purple);color:var(--on-accent)}
.cta{display:flex;flex-wrap:wrap;gap:10px}
@media (max-width:520px){.cta .btn{flex:1 1 100%}}

/* ---------- hero ---------- */
.hero{padding-top:clamp(14px,3vw,28px)}
.stage{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);aspect-ratio:1316/924;max-height:82vh;margin-inline:auto;width:100%}
.stage .slide{position:absolute;inset:0;opacity:0;transition:opacity .9s ease}
.stage .slide.on{opacity:1}
.stage img{width:100%;height:100%;object-fit:contain}
.dots{position:absolute;left:0;right:0;bottom:12px;display:flex;gap:8px;justify-content:center}
.dots button{width:12px;height:12px;border-radius:50%;border:2px solid var(--purple);background:rgba(255,255,255,.75);padding:0;cursor:pointer}
.dots button[aria-current="true"]{background:var(--purple)}
.stage-empty{aspect-ratio:16/7;display:grid;place-items:center;text-align:center;padding:24px;background:linear-gradient(135deg,var(--purple),var(--orange));color:#fff;font-family:var(--display);font-size:clamp(24px,6vw,44px)}
.facts{display:grid;gap:14px;padding:22px 0 6px;align-items:center}
.facts .date{font-family:var(--display);font-size:clamp(24px,6vw,32px);color:var(--purple);line-height:1.2}
.facts .venue b{display:block;font-weight:500;color:var(--ink)}
.facts .venue span{color:var(--ink-soft)}
@media (min-width:900px){.facts{grid-template-columns:auto 1fr auto;gap:12px 32px}}
.note-bar{margin:14px 0 0;padding:12px 16px;border-left:4px solid var(--gold);background:var(--surface-2);border-radius:0 12px 12px 0;white-space:pre-line}
.intro{max-width:70ch;color:var(--ink-soft);margin:12px 0 0}

/* ---------- sections ---------- */
.block{padding:clamp(32px,6vw,64px) 0 0}
.sec-head{margin-bottom:clamp(16px,3vw,26px)}
.sec-head h2{font-size:clamp(26px,5vw,36px)}
.sec-head p{margin:6px 0 0;color:var(--ink-soft)}
.page-head{padding:clamp(28px,6vw,56px) 0 0}
.page-head h1{font-size:clamp(28px,6vw,44px)}
.page-head p{color:var(--ink-soft);margin:8px 0 0;max-width:68ch}
.page-body{padding-top:clamp(18px,4vw,32px)}

/* home quick cards */
.cards{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.qcard{display:flex;flex-direction:column;gap:6px;padding:20px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink);box-shadow:var(--shadow);border-top:5px solid var(--c,var(--purple));transition:transform .15s}
.qcard:hover{transform:translateY(-3px)}
.qcard:nth-child(4n+2){--c:var(--orange)} .qcard:nth-child(4n+3){--c:var(--teal)} .qcard:nth-child(4n+4){--c:var(--gold)}
.qcard h3{font-size:20px}
.qcard p{margin:0;color:var(--ink-soft);font-size:15px}
.qcard .go{margin-top:auto;padding-top:8px;color:var(--c,var(--purple));font-weight:600;font-size:15px}

/* ---------- schedule ---------- */
.cord{display:flex;gap:10px;overflow-x:auto;padding:4px 0 10px;scrollbar-width:none;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}
.cord::-webkit-scrollbar{display:none}
.flag{--c:var(--orange);flex:0 0 auto;scroll-snap-align:start;min-width:104px;border:0;background:var(--c);color:#fff;padding:12px 16px 32px;text-align:left;text-decoration:none;clip-path:polygon(0 0,100% 0,100% 80%,50% 100%,0 80%);cursor:pointer;font:inherit;opacity:.85;transition:opacity .2s,padding .2s;display:block}
.flag:nth-child(4n+2){--c:var(--purple-d)} .flag:nth-child(4n+3){--c:var(--teal)} .flag:nth-child(4n+4){--c:#c98f00}
.flag:hover{opacity:1}
.flag .d{display:block;font-family:var(--display);font-size:22px;line-height:1.1}
.flag .w{display:block;font-size:13px;opacity:.95}
.day{margin-top:8px;padding-top:clamp(16px,3vw,28px)}
.day>h3{font-size:clamp(20px,4.5vw,26px);margin:10px 0 4px}
.day-date{display:inline-flex;align-items:center;gap:8px;margin:6px 0 14px;padding:5px 16px;border-radius:999px;background:var(--purple);color:var(--on-accent);font:500 clamp(16px,3.6vw,20px)/1.4 var(--display);letter-spacing:.01em}
.day-date::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--gold)}
.tracks{display:grid;gap:clamp(18px,3vw,32px)}
@media (min-width:900px){.tracks.two{grid-template-columns:1fr 1fr}}
.track h4{font-family:var(--display);font-weight:500;font-size:18px;color:var(--teal);margin:8px 0 2px}
.tl{list-style:none;margin:0;padding:0}
.tl>li{display:grid;gap:2px;padding:13px 0;border-bottom:1px solid var(--line)}
@media (min-width:640px){.tl>li{grid-template-columns:136px 1fr;gap:16px}.tracks.two .tl>li{grid-template-columns:116px 1fr}}
.tl .t{font-variant-numeric:tabular-nums;color:var(--purple);font-weight:600;font-size:15px}
.tl .ti{font-weight:500}
.chip{display:inline-block;font-size:13px;border:1px solid var(--teal);color:var(--teal);border-radius:8px;padding:0 9px;margin-left:6px;font-weight:400;vertical-align:1px}
.det{margin-top:4px;color:var(--ink-soft);font-size:15.5px}
.det p{margin:2px 0}.det ul{margin:2px 0 0;padding-left:20px}
.inlink{display:inline-block;margin-top:4px;font-size:15px}

/* ---------- participants ---------- */
.people{display:grid;gap:clamp(20px,4vw,40px)}
@media (min-width:900px){.people{grid-template-columns:280px 1fr;align-items:start}}
.tot{border-radius:var(--radius);background:var(--surface-2);padding:24px;border:1px solid var(--line)}
.tot .num{font-family:var(--display);font-size:clamp(52px,12vw,72px);line-height:1;color:var(--purple)}
.tot .lbl{margin-top:6px;font-weight:500}
.tot .asof{font-size:14px;color:var(--ink-soft)}
.bars{list-style:none;margin:0;padding:0}
.bars li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 14px;padding:12px 0;border-bottom:1px solid var(--line);align-items:center}
.bars .host{display:inline-block;font-size:12px;background:var(--orange);color:#fff;border-radius:6px;padding:0 8px;margin-left:8px;vertical-align:2px}
.bars .v{grid-row:span 2;grid-column:2;text-align:right;font-family:var(--display);font-size:22px;line-height:1.1;font-variant-numeric:tabular-nums}
.bars .v small{display:block;font-family:var(--body);font-size:12px;color:var(--ink-soft)}
.bar{grid-column:1;height:9px;border-radius:999px;background:var(--surface-2);overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:var(--purple)}
.bars li.is-host .bar span{background:var(--orange)}

/* ---------- rooms ---------- */
.finder{margin:0 0 22px}
.finder input{width:100%;max-width:440px;font:inherit;font-size:16px;color:var(--ink);background:var(--surface);border:1.5px solid var(--line);border-radius:999px;padding:11px 18px}
.finder input:focus{border-color:var(--purple);outline:none}
.rooms{display:grid;gap:clamp(24px,4vw,40px)}
@media (min-width:900px){.rooms{grid-template-columns:1fr 1fr}}
.rt{--tc:var(--purple)} .rt:nth-child(2){--tc:var(--teal)}
.rt-h{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;padding-bottom:10px;border-bottom:3px solid var(--tc)}
.rt-h h3{font-size:22px}
.rt-h .d{font-size:14px;color:var(--ink-soft);flex-basis:100%;order:3}
.rt-h .n{margin-left:auto;font-family:var(--display);color:var(--tc);white-space:nowrap}
.rlist{list-style:none;margin:0;padding:0}
.rlist li{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:12px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line);transition:opacity .2s}
.rlist li.dim{opacity:.25}
.gc{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-family:var(--display);font-size:17px;color:var(--tc);border:2px solid var(--tc)}
.gn{font-weight:500;line-height:1.45}
.gs{font-size:13.5px;color:var(--ink-soft);line-height:1.45;margin-top:2px}
.gm{font-size:14px;color:var(--ink-soft)}
.room{text-align:right}
.rc{display:inline-block;font-family:var(--display);font-size:18px;background:var(--tc);color:var(--on-accent);border-radius:10px;padding:3px 11px;white-space:nowrap}
.room.pending .rc{background:transparent;color:var(--ink-soft);border:1.5px dashed var(--line);font:14px var(--body)}
.rnote{margin-top:22px;padding:12px 16px;border-left:4px solid var(--gold);background:var(--surface-2);border-radius:0 12px 12px 0;color:var(--ink-soft);font-size:15px}
@media (max-width:420px){.rlist li{grid-template-columns:38px minmax(0,1fr);}.room{grid-column:2;text-align:left}.gc{width:38px;height:38px;font-size:15px}}

/* ---------- downloads ---------- */
.dl{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.dl li{display:grid;grid-template-columns:48px minmax(0,1fr);gap:14px;align-items:center;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.dl .ico{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:var(--surface-2);color:var(--purple);font:600 12px var(--display)}
.dl .n{font-weight:500}.dl .m{font-size:14px;color:var(--ink-soft)}
.dl .btn{grid-column:1/-1;min-height:42px}
@media (min-width:640px){.dl li{grid-template-columns:48px minmax(0,1fr) auto}.dl .btn{grid-column:auto}}
.empty{padding:32px 20px;border:1.5px dashed var(--line);border-radius:var(--radius);color:var(--ink-soft);text-align:center}

/* ---------- travel ---------- */
.travel{display:grid;gap:clamp(20px,4vw,36px)}
@media (min-width:900px){.travel{grid-template-columns:1fr 1fr;align-items:start}}
.mapbox{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}
.map-fallback{aspect-ratio:4/3;display:grid;place-items:center;text-align:center;padding:24px;color:var(--ink-soft)}
.addr{white-space:pre-line;margin:0 0 16px}
.routes{list-style:none;margin:18px 0 0;padding:0}
.routes li{padding:14px 0;border-bottom:1px solid var(--line)}
.routes b{display:block;font-family:var(--display);font-weight:500;color:var(--teal)}

/* ---------- footer ---------- */
.foot{margin-top:clamp(48px,8vw,88px);background:linear-gradient(160deg,#1f2a5c 0%,#2a2060 55%,#3b1f5e 100%);color:#eceaf5;position:relative}
.foot-stripe{height:6px;background:linear-gradient(90deg,var(--orange) 0 25%,var(--purple) 0 50%,var(--teal) 0 75%,var(--gold) 0)}
.foot .wrap{padding-top:clamp(32px,6vw,56px);padding-bottom:clamp(28px,5vw,44px)}
.foot-grid{display:grid;gap:clamp(28px,5vw,40px)}
@media (min-width:640px){.foot-grid{grid-template-columns:1fr 1fr}.foot-brand{grid-column:1/-1}}
@media (min-width:980px){.foot-grid{grid-template-columns:1.5fr .8fr 1.2fr}.foot-brand{grid-column:auto}}
.foot-logo{display:inline-flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font:500 22px/1.2 var(--display)}
.foot-logo small{display:block;font:400 13px var(--body);letter-spacing:.12em;text-transform:uppercase;color:#f5c74f}
.foot-logo .brand-mark::after{background:#2a2060}
.foot-title{margin:16px 0 12px;font-size:16px;line-height:1.6;color:#d9d6ec;max-width:46ch}
.foot-facts{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.foot-facts li{display:flex;gap:10px;align-items:flex-start;font-size:15px}
.foot-facts .fi{flex:none;width:30px;height:30px;border-radius:9px;background:rgba(255,255,255,.1);display:grid;place-items:center;font-size:15px}
.foot h2{font:500 14px/1.3 var(--body);letter-spacing:.12em;text-transform:uppercase;color:#f5c74f;margin:0 0 16px}
.contacts,.links{list-style:none;margin:0;padding:0}
.links{display:grid;gap:2px}
.links a{display:inline-block;padding:7px 0;color:#eceaf5;text-decoration:none;transition:color .15s,transform .15s}
.links a:hover{color:#f5c74f;transform:translateX(4px)}
.contacts{display:grid;gap:12px}
.contacts li{display:flex;flex-direction:column;gap:2px;padding:14px 16px;border-radius:14px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12)}
.c-name{font:500 18px/1.4 var(--display);color:#fff}
.c-role{font-size:13.5px;color:#b9b6d6;margin-bottom:4px}
.c-link{color:#f5c74f;text-decoration:none;font-variant-numeric:tabular-nums;padding:3px 0;word-break:break-all}
.c-link:hover{text-decoration:underline}
.foot-muted{color:#b9b6d6;margin:0}
.foot-bottom{border-top:1px solid rgba(255,255,255,.14);background:rgba(10,12,40,.35);padding-bottom:env(safe-area-inset-bottom)}
.foot-bottom .foot-bottom-in{display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;padding-top:16px;padding-bottom:16px}
.foot-bottom p{margin:0;font-size:13.5px;color:#b9b6d6;max-width:80ch}
.to-top{color:#fff;text-decoration:none;font-size:14px;padding:6px 14px;border:1px solid rgba(255,255,255,.3);border-radius:999px;white-space:nowrap}
.to-top:hover{background:rgba(255,255,255,.12)}
.map-embed{display:block;width:100%;aspect-ratio:4/3;min-height:300px;border:0}
@media (min-width:900px){.map-embed{aspect-ratio:auto;height:480px}}

/* floating day panel: sticks under the header while scrolling, shrinks once stuck */
.daynav{position:sticky;top:calc(var(--hdr) + env(safe-area-inset-top));z-index:30;margin:0 calc(var(--gutter) * -1);padding:0 var(--gutter);transition:background .2s,box-shadow .2s}
.daynav.stuck{background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:blur(10px);box-shadow:0 4px 14px rgba(31,42,92,.1)}
.daynav .cord{padding-bottom:0}
.daynav.stuck .cord{padding-top:6px}
.daynav.stuck .flag{min-width:84px;padding:6px 14px 20px}
.daynav.stuck .flag .d{font-size:17px}
.daynav.stuck .flag .w{font-size:12px}
.flag.active{opacity:1;filter:drop-shadow(0 2px 0 rgba(0,0,0,.25))}
.day{scroll-margin-top:calc(var(--hdr) + 100px)}
.det ul{list-style:disc;margin:4px 0 0;padding-left:22px}
.det li{display:list-item;padding:2px 0;border:0}