/* ISIH 2026 — newsprint stylesheet. Derived from the Broadsheet design system. */
:root{
  --bg:#f3f2f2; --text:#201e1d; --accent:#0067;
  --accent:#006786; --accent-ink:#0088b0; --accent2:#d6006c;
  --n300:#cfccc9; --n400:#b4b0ac; --n500:#918c87; --n600:#6f6a65; --n700:#4f4a46; --n800:#332f2c;
  --font:"Source Serif 4",Georgia,serif;
  --s1:5px; --s2:10px; --s3:15px; --s4:20px; --s6:30px; --s8:40px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-weight:600;line-height:1.12;margin:0}
p{margin:0}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent-ink);outline-offset:2px}
::selection{background:rgba(0,136,176,.18)}
img,iframe{max-width:100%}

.wrap{max-width:1180px;margin:0 auto;padding:0 40px}
.masthead{display:flex;flex-wrap:wrap;gap:18px 32px;align-items:baseline;justify-content:space-between;padding-top:40px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand img{height:30px;width:auto;mix-blend-mode:multiply;filter:grayscale(1) contrast(1.15);transition:filter .18s ease}
.brand:hover img{filter:none}
.brand span{font-size:19px;font-weight:600;letter-spacing:.02em;color:var(--text)}
.brand:hover span{color:var(--accent)}
.menu{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:15px}
.menu a{color:var(--n800)}
.menu a[aria-current]{color:var(--accent)}
.rule-thick{border-top:3px solid var(--text);margin-top:18px}
.rule-thin{border-top:1px solid var(--text);margin-top:3px}
.dateline{display:flex;flex-wrap:wrap;gap:8px 28px;justify-content:space-between;padding:10px 0;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--n600)}
.dateline+.rule-thin{margin-top:0}

main{padding-bottom:120px}
.lede{font-size:19px;line-height:1.6;max-width:34em;color:var(--n800);text-wrap:pretty}
h1.title{font-size:68px;letter-spacing:-.01em;max-width:900px;text-wrap:pretty;margin-bottom:22px}
h1.page{font-size:52px;line-height:1.06;margin-bottom:20px}
.standfirst{font-style:italic;font-size:25px;line-height:1.4;color:var(--n700);max-width:22em;margin-bottom:34px}
h2.section{font-size:38px;margin-bottom:26px}
.sec{padding-top:88px}
.sec:first-of-type{padding-top:64px}
.measure{max-width:44em;font-size:17px;line-height:1.65}
.two-col{columns:2;column-gap:44px;max-width:900px;font-size:17px;line-height:1.65}
.two-col p{margin-bottom:16px}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px 40px;padding-top:56px}
.facts dt{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--n600);margin-bottom:6px}
.facts dd{margin:0;font-size:21px}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:40px}
.kicker{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.people h3{font-size:21px;margin-bottom:18px}
.people li{list-style:none;margin-bottom:14px}
.people ul{padding:0;margin:0}
.people b{font-weight:600}
.people small{display:block;font-size:15px;color:var(--n600)}
.dates{display:flex;flex-direction:column;gap:14px;max-width:640px}
.dates div{display:grid;grid-template-columns:170px minmax(0,1fr);gap:24px;align-items:baseline;font-size:17px}
.dates b{font-weight:400;font-size:19px;font-variant-numeric:tabular-nums}
.dates span{color:var(--n700)}
.btn{display:inline-block;font:inherit;font-size:16px;padding:11px 20px;border-radius:2px;border:1px solid var(--accent-ink);background:var(--accent-ink);color:#fff;cursor:pointer}
.btn:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-sec{background:transparent;color:var(--accent);border-color:var(--n400)}
.btn-sec:hover{background:transparent;border-color:var(--accent-ink);color:var(--accent-ink)}
.actions{display:flex;flex-wrap:wrap;gap:12px 20px;margin-top:34px}

footer{border-top:1px solid var(--n300);padding-top:32px;display:grid;gap:28px}
footer .label{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--n600)}
.partners{display:flex;flex-wrap:wrap;align-items:center;gap:40px}
.partners img{height:54px;width:auto;mix-blend-mode:multiply;filter:grayscale(1) contrast(1.1);transition:filter .18s ease}
.partners img:hover{filter:none}
/* map: grey ink, colour on hover — same treatment as the logos */
.map{width:100%;aspect-ratio:4/3;border:0;display:block;filter:grayscale(1) contrast(1.05);transition:filter .25s ease}
.map:hover{filter:none}
.legal{display:flex;flex-wrap:wrap;gap:8px 28px;font-size:14px;color:var(--n600)}

/* forms */
.field{margin:0}
.field label{display:block;font-weight:600;margin-bottom:6px}
.field .hint{font-size:14px;color:var(--n600);margin-bottom:8px}
.req{color:var(--accent2)}
input[type=text],input[type=email],textarea,select{width:100%;font:inherit;padding:11px 13px;border:1px solid var(--n400);border-radius:2px;background:#fff;color:var(--text)}
input:focus-visible,textarea:focus-visible,select:focus-visible{border-color:var(--accent-ink)}
input[type=checkbox],input[type=radio]{accent-color:var(--accent-ink);width:16px;height:16px}
.step{font-size:15px;letter-spacing:.14em;text-transform:uppercase;color:var(--n600);margin-bottom:22px}
.stack{display:flex;flex-direction:column;gap:22px}
.choices{display:flex;flex-direction:column;gap:12px}
.choices label,.days label{display:flex;align-items:center;gap:8px;font-weight:400}
.days{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:10px}
.reg{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,320px);gap:64px;align-items:start;padding-top:64px}
.aside p{margin-bottom:16px;color:var(--n800)}

/* programme */
.controls{position:sticky;top:0;z-index:20;background:var(--bg);padding:14px 0 18px;margin-bottom:44px;display:flex;flex-wrap:wrap;gap:24px 32px;align-items:center}
.tabs{display:flex;gap:8px}
.tab{font:inherit;font-size:17px;padding:9px 16px;border:1px solid var(--n300);border-radius:2px;background:transparent;color:var(--n700);cursor:pointer;white-space:nowrap;display:flex;align-items:baseline;font-weight:600}
.tab small{font-size:13px;font-weight:400;opacity:.7;margin-left:10px}
.tab[aria-selected=true]{border-color:var(--accent-ink);background:rgba(0,136,176,.08);color:var(--accent)}
.search{font:inherit;font-size:15px;background:transparent;border:0;border-bottom:1px solid var(--n400);padding:8px 2px;width:280px;border-radius:0}
.search:focus-visible{outline:none;border-bottom-color:var(--accent-ink)}
.star-toggle{font:inherit;font-size:15px;background:none;border:0;padding:0;cursor:pointer;color:var(--n700)}
.star-toggle[aria-pressed=true]{color:var(--accent2)}
.block{display:grid;grid-template-columns:132px minmax(0,1fr);gap:36px;padding-bottom:var(--s8)}
.block .when{font-variant-numeric:tabular-nums;color:var(--n600);padding-top:6px}
.block .when em{display:block;font-style:normal;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-top:8px}
.note{font-size:21px;color:var(--n700);padding-top:2px}
.feature b{display:block;font-size:21px;line-height:1.25;margin-bottom:8px}
.feature span{display:block;color:var(--n800)}
.rooms{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-template-rows:auto auto auto 1fr;gap:0 40px}
.room{display:grid;grid-row:span 4;grid-template-rows:subgrid;padding-bottom:var(--s8)}
.room .name{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-ink);margin-bottom:12px}
.room .panel{font-size:22px;font-weight:600;line-height:1.22;margin-bottom:6px;text-wrap:pretty}
.room .chair{font-size:14px;font-style:italic;color:var(--n600);margin-bottom:20px}
.papers{display:flex;flex-direction:column;gap:18px}
.paper{display:grid;grid-template-columns:28px minmax(0,1fr);gap:10px;align-items:start}
.paper button{background:none;border:0;padding:0;cursor:pointer;font-size:22px;line-height:1.15;color:var(--n400);transition:color .15s ease,transform .15s ease}
.paper button:hover{color:var(--accent-ink);transform:scale(1.12)}
.paper button[aria-pressed=true]{color:var(--accent2)}
.paper b{display:block;font-size:16px;font-weight:600;line-height:1.4;margin-bottom:3px}
.paper span{font-size:15px;line-height:1.5;color:var(--n700);text-wrap:pretty}

@media(max-width:820px){
  .wrap{padding:0 22px}
  h1.title{font-size:44px}
  h1.page{font-size:36px}
  h2.section{font-size:29px}
  .two-col{columns:1}
  .reg{grid-template-columns:1fr;gap:44px}
  .block{grid-template-columns:1fr;gap:10px}
}

/* search results grouped by day */
.dayhead{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);border-bottom:1px solid var(--n300);padding-bottom:8px;margin:8px 0 26px}
.dayhead:not(:first-child){margin-top:34px}

/* print / export to PDF */
@media print{
  @page{margin:16mm}
  .controls,.masthead .menu,footer,.star-toggle,#export-pdf,.search,.tabs{display:none !important}
  body{background:#fff;font-size:11pt}
  .wrap{max-width:none;padding:0}
  main{padding-bottom:0}
  a{color:#000;text-decoration:none}
  .paper button{display:none}
  .paper{grid-template-columns:1fr}
  .block{break-inside:avoid;padding-bottom:18px}
  .room{break-inside:avoid}
  h1.title{font-size:22pt}
  .rooms{gap:0 22px}
  .dayhead{break-before:auto;color:#000}
}