/* Living Summit Warszawa 2027. Doers-style layout, v2: one accent colour, more air, countdown. */
:root{
  --ink:#0a0a0a;
  --bg:#fff;
  --soft:#f5f3f0;
  --line:#e6e3de;
  --muted:#5f5b55;
  --accent:#ff5d01;      /* the one brand colour: buttons, big headings, dark sections */
  --accent-ink:#c04600;  /* same hue, AA-safe for small text on white AND on --soft (4.61:1; audit 2026-10-06) */
  --display:"Climate Crisis",system-ui,sans-serif;
  --body:"IBM Plex Sans",system-ui,sans-serif;
  --wrap:1240px;
  --pad:140px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 18px/1.7 var(--body);-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 40px}
html[lang="pl"] .en,html[lang="en"] .pl{display:none !important}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:200;background:#fff;padding:8px 12px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

/* type */
.d{font-family:var(--display);font-weight:400;text-transform:uppercase;line-height:1;letter-spacing:-.005em;margin:0}
.accent{color:var(--accent)}
.sec{padding:var(--pad) 0}
.sec-soft{background:var(--soft)}
.sec-soft .accent{color:#f25800} /* large text on --soft needs 3:1; #ff5d01 gives 2.78 (audit 2026-10-06) */
.sec-dark{background:var(--ink);color:#fff}
.eyebrow{display:flex;align-items:center;gap:14px;margin:0 0 22px;font:700 13px/1 var(--body);letter-spacing:.18em;text-transform:uppercase;color:var(--accent-ink)}
.eyebrow::before{content:"";width:34px;height:2px;background:currentColor}
.sec-dark .eyebrow{color:var(--accent)}
.h2{font-size:clamp(34px,4vw,58px)}
.lead{max-width:640px;color:var(--muted);font-size:19px;margin:24px 0 0}
.sec-dark .lead{color:#fff}
.sec-head{margin-bottom:64px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:0 26px;border-radius:999px;font:700 13px/1 var(--body);letter-spacing:.1em;text-transform:uppercase;text-decoration:none;border:1.5px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-outline{border-color:#cfcac2;background:#fff;color:var(--ink)}
.btn-ghost{border-color:rgba(255,255,255,.7);color:#fff}
.btn-ink{background:var(--ink);color:#fff}

/* nav */
.nav{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;height:80px;gap:28px;max-width:1400px}
.logo{display:block;text-decoration:none;font:400 20px/.86 var(--display);text-transform:uppercase;color:var(--ink)}
.logo span{display:block}
.logo b{font-weight:400;color:var(--accent)}
.city-switch{position:relative;padding-left:16px;border-left:1px solid var(--line)}
.city-switch>button{background:none;border:0;cursor:pointer;text-align:left;padding:0 24px 0 0;min-height:44px;position:relative;color:var(--ink)}
.city-switch>button strong{display:block;font:400 14px/1.1 var(--display);text-transform:uppercase}
.city-switch>button small{display:block;font:500 11px/1.4 var(--body);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.city-switch>button::after{content:"";position:absolute;right:4px;top:46%;width:6px;height:6px;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:translateY(-50%) rotate(45deg)}
.city-menu{display:none;position:absolute;top:calc(100% + 14px);left:0;min-width:280px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:8px;box-shadow:0 20px 50px rgba(0,0,0,.14)}
.city-switch.open .city-menu{display:block}
.city-menu>a,.city-menu>span{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:13px 14px;border-radius:10px;text-decoration:none}
.city-menu>a{background:var(--soft)}
.city-menu>a:hover{background:#ece8e2}
.city-menu strong{font:400 14px/1 var(--display);text-transform:uppercase}
.city-menu>span strong{color:#9b968f}
.city-menu em{font:600 11px/1 var(--body);font-style:normal;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.navlinks{display:flex;gap:30px;list-style:none;margin:0 auto;padding:0}
.navlinks a{text-decoration:none;font:600 13px/1 var(--body);letter-spacing:.12em;text-transform:uppercase}
.navlinks a:hover{color:var(--accent-ink)}
.navlinks .only-menu{display:none}
.nav-actions{display:flex;align-items:center;gap:10px}
.lang{display:flex;gap:2px}
.lang button{background:none;border:0;cursor:pointer;font:700 12px/1 var(--body);letter-spacing:.1em;color:var(--muted);min-width:32px;min-height:44px}
.lang button[aria-pressed="true"]{color:var(--ink)}
.burger{display:none;width:44px;height:44px;background:none;border:0;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.burger i{display:block;width:24px;height:2px;background:var(--ink);transition:transform .18s,opacity .18s}
.nav.open .burger i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .burger i:nth-child(2){opacity:0}
.nav.open .burger i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
body.menu-open{overflow:hidden}

/* hero */
.hero{position:relative;min-height:calc(100svh - 112px);display:flex;align-items:center;color:#fff;background:var(--ink);overflow:hidden}
.hero>img{position:absolute;inset:0;z-index:0;width:100%;height:100%;object-fit:cover}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(10,10,10,.92) 0%,rgba(10,10,10,.8) 50%,rgba(10,10,10,.62) 100%)}
.hero .wrap{position:relative;z-index:2;width:100%;padding-top:110px;padding-bottom:110px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin:0 0 30px;padding:0;list-style:none;font:600 14px/1 var(--body);letter-spacing:.14em;text-transform:uppercase}
.hero-meta li{display:flex;align-items:center;gap:10px}
.hero-meta li+li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:12px}
.hero h1{font-size:clamp(38px,5.6vw,84px);line-height:1}
.hero h1 .accent{display:block;margin-top:6px}
.hero p{max-width:600px;font-size:clamp(18px,1.5vw,21px);line-height:1.65;margin:32px 0 0;color:#fff}
.hero .ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}

/* countdown */
.countdown{margin-top:64px;padding-top:32px;border-top:1px solid rgba(255,255,255,.22);display:flex;flex-wrap:wrap;align-items:center;gap:22px 48px}
.countdown>small{font:700 12px/1.5 var(--body);letter-spacing:.18em;text-transform:uppercase;color:#fff;max-width:200px}
.cd{display:flex;gap:14px;margin:0;padding:0;list-style:none}
.cd li{min-width:96px;padding:16px 12px 14px;border:1px solid rgba(255,255,255,.28);border-radius:14px;text-align:center;background:rgba(10,10,10,.35)}
.cd b{display:block;font:400 40px/1 var(--display);color:var(--accent);font-variant-numeric:tabular-nums}
.cd span{display:block;margin-top:10px;font:600 11px/1 var(--body);letter-spacing:.16em;text-transform:uppercase;color:#fff}
.by{margin-left:auto;display:flex;align-items:center;gap:14px}
.by small{font:600 11px/1 var(--body);letter-spacing:.18em;text-transform:uppercase;color:#fff}
.by img{height:30px;width:auto}

/* facts strip (replaces the moving ticker) */
.facts{border-bottom:1px solid var(--line)}
.facts ul{display:grid;grid-template-columns:repeat(4,1fr);margin:0 auto;padding:0;list-style:none;max-width:var(--wrap)}
.facts li{padding:40px 30px;border-left:1px solid var(--line)}
.facts li:first-child{border-left:0}
.facts h3{margin:0;font:400 26px/1.1 var(--display);text-transform:uppercase}
.facts p{margin:10px 0 0;color:var(--muted);font-size:15px;line-height:1.5}

/* audience: the one full-colour block */
.aud{background:var(--accent);color:var(--ink)}
.aud .eyebrow{color:var(--ink)}
.aud .d{font-size:clamp(44px,6.4vw,96px)}
.aud ul{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin:64px 0 0;padding:0;list-style:none;border-top:2px solid var(--ink)}
.aud li{padding:24px 24px 0 0;font:600 clamp(16px,1.4vw,20px)/1.4 var(--body);text-transform:uppercase;letter-spacing:.04em}
.aud li small{display:block;margin-top:8px;font:400 16px/1.5 var(--body);text-transform:none;letter-spacing:0}

/* about */
.about-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:80px;align-items:center}
.about p{margin:0 0 20px;color:var(--muted);max-width:560px}
.about .btn{margin-top:20px}
.topics{display:flex;flex-wrap:wrap;gap:10px;margin:8px 0 10px;padding:0;list-style:none}
.topics li{padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:var(--soft);font-weight:600;font-size:15px}
.media{border-radius:18px;overflow:hidden;box-shadow:0 30px 70px rgba(0,0,0,.18)}
.media img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* why: dark */
.why details{border-top:1px solid rgba(255,255,255,.2)}
.why details:last-of-type{border-bottom:1px solid rgba(255,255,255,.2)}
.why summary{list-style:none;display:flex;align-items:center;gap:22px;padding:30px 0;cursor:pointer;font:500 clamp(21px,2.1vw,30px)/1.25 var(--body);min-height:44px}
.why summary::-webkit-details-marker{display:none}
.why summary .num{font:400 15px/1 var(--display);color:var(--accent);width:44px;flex:none}
.why summary::after{content:"";margin-left:auto;width:10px;height:10px;border-right:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(45deg);flex:none;transition:transform .2s}
.why details[open] summary::after{transform:rotate(-135deg)}
.why .body{display:grid;grid-template-columns:340px minmax(0,520px);gap:40px;padding:6px 0 40px 66px}
.why .body img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:12px}
.why .body p{margin:0 0 18px;color:#fff}
.why .tag{display:inline-flex;padding:9px 14px;border-radius:999px;border:1px solid var(--accent);color:var(--accent);font:700 12px/1 var(--body);letter-spacing:.12em;text-transform:uppercase}

/* venue */
.venue-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:60px;align-items:end}
.venue-head p{margin:0;color:var(--muted)}
.venue-card{position:relative;margin-top:64px;border-radius:20px;overflow:hidden}
.venue-card img{width:100%;aspect-ratio:21/9;object-fit:cover}
.venue-card ul{position:absolute;left:24px;bottom:24px;display:flex;flex-wrap:wrap;gap:10px;margin:0;padding:0;list-style:none}
.venue-card li{padding:12px 18px;border-radius:999px;background:#fff;font:700 12px/1 var(--body);letter-spacing:.12em;text-transform:uppercase}

/* speakers */
.sp-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:56px}
.arrows{display:flex;gap:10px}
.arrows button{width:52px;height:52px;border-radius:50%;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:20px}
.sp-track{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:6px}
.sp-track::-webkit-scrollbar{display:none}
.sp{flex:0 0 270px;scroll-snap-align:start}
.sp .ph{position:relative;height:330px;border-radius:14px;background:var(--soft);border:1px solid var(--line);display:grid;place-items:center;font:400 54px/1 var(--display);color:#bdb7ae}
.sp .role{position:absolute;left:14px;bottom:14px;padding:8px 13px;border-radius:999px;background:var(--ink);color:#fff;font:700 11px/1 var(--body);letter-spacing:.1em;text-transform:uppercase}
.sp h3{font:400 18px/1.25 var(--display);text-transform:uppercase;margin:18px 0 6px}
.sp small{display:block;color:var(--muted);font-size:15px}
.progress{height:3px;background:var(--line);border-radius:3px;margin-top:36px}
.progress i{display:block;height:100%;width:12%;background:var(--accent);border-radius:3px;transition:width .2s}
.see-all{display:inline-block;margin-top:34px;font:700 14px/1 var(--body);letter-spacing:.12em;text-transform:uppercase;color:var(--accent-ink);text-decoration:none}

/* who it's for */
.row-list{display:grid;gap:10px}
.row-list a{display:grid;grid-template-columns:1.1fr 1fr 48px;align-items:center;gap:20px;min-height:104px;padding:0 32px;background:#fff;border:1px solid var(--line);border-radius:12px;text-decoration:none;transition:border-color .2s,background .2s}
.row-list a:hover{border-color:var(--accent);background:#fff8f3}
.row-list b{font:400 clamp(22px,2.4vw,34px)/1.05 var(--display);text-transform:uppercase}
.row-list small{font:500 15px/1.4 var(--body);color:var(--muted)}
.row-list a>span{font-size:26px;text-align:right;color:var(--accent-ink)}

/* partners */
.tiers{display:grid;gap:44px}
.tier h3{font:700 14px/1 var(--body);letter-spacing:.14em;text-transform:uppercase;margin:0 0 18px;color:var(--muted)}
.slots{display:flex;flex-wrap:wrap;gap:16px}
.slots i{width:200px;height:84px;border-radius:12px;background:var(--soft);border:1px dashed #cfcac2}
.partners .mail-cta{margin-top:64px}
.partners .mail-cta .btn{margin-top:0}

/* cities: dark */
.city-main{position:relative;display:block;border-radius:22px;overflow:hidden;text-decoration:none;color:#fff;min-height:460px;outline-offset:6px}
.city-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.city-main:hover img{transform:scale(1.03)}
.city-main::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,10,10,.85),rgba(10,10,10,.2))}
.city-main .in{position:relative;z-index:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:flex-start;min-height:460px;padding:48px}
.city-main .no{font:700 13px/1 var(--body);letter-spacing:.2em;text-transform:uppercase;color:var(--accent)}
.city-main .name{font:400 clamp(44px,7vw,100px)/.95 var(--display);text-transform:uppercase;margin:18px 0 14px}
.city-main .meta{font-size:20px;margin-bottom:28px}
.city-soon{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:22px}
.city-soon>div{border-radius:22px;padding:36px;border:1px solid rgba(255,255,255,.2);display:flex;flex-direction:column;align-items:flex-start}
.city-soon .no{font:700 13px/1 var(--body);letter-spacing:.2em;text-transform:uppercase;color:#fff}
.city-soon .name{font:400 clamp(30px,3.6vw,52px)/1 var(--display);text-transform:uppercase;margin:16px 0 18px;color:#fff}
.soon{display:inline-flex;padding:9px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.5);font:700 11px/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:#fff}

/* moments */
.m-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.m-grid img{width:100%;height:300px;object-fit:cover;border-radius:16px}

/* footer */
.foot{background:var(--soft);padding:110px 0 30px;border-top:1px solid var(--line)}
.foot-top{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:end;padding-bottom:80px}
.foot-top p{font:400 clamp(22px,2.2vw,30px)/1.35 var(--body);margin:0;max-width:660px}
.foot-mid,.foot-bot{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;border-top:1px solid var(--line);padding:24px 0}
.foot small,.foot-bot a{font:600 12px/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);text-decoration:none}
.foot-mid a{text-transform:none;letter-spacing:.02em;color:var(--ink);text-decoration:none}
.foot-mid div{display:flex;align-items:center;gap:14px}
.foot-mid img{height:26px;width:auto}
.foot-bot nav{display:flex;gap:26px;flex-wrap:wrap}
.foot-bot a:hover{color:var(--ink)}

/* responsive */
@media (max-width:1100px){
  .navlinks{display:none}
  .burger{display:flex}
  .nav-actions .btn{display:none}
  .nav.open .navlinks{display:flex;flex-direction:column;gap:0;position:absolute;top:80px;left:0;right:0;background:#fff;padding:8px 24px 24px;border-bottom:1px solid var(--line);box-shadow:0 20px 40px rgba(0,0,0,.08)}
  .nav.open .navlinks a{display:flex;align-items:center;min-height:54px;border-bottom:1px solid var(--line)}
  .nav.open .navlinks .only-menu{display:block}
  .facts ul{grid-template-columns:1fr 1fr}
  .facts li:nth-child(3){border-left:0}
  .facts li:nth-child(n+3){border-top:1px solid var(--line)}
  .why .body{grid-template-columns:260px minmax(0,1fr)}
  .by{margin-left:0}
}
@media (max-width:820px){
  :root{--pad:88px}
  body{font-size:17px}
  .wrap{padding:0 20px}
  .nav .wrap{height:68px;gap:14px}
  .nav.open .navlinks{top:68px}
  .nav-actions{margin-left:auto}
  .nav-actions .lang{display:none}
  .nav.open .navlinks .lang{display:flex;padding:14px 0 0}
  .logo{font-size:17px}
  .hero{min-height:0}
  .hero .wrap{padding-top:72px;padding-bottom:64px}
  .hero-meta{flex-direction:column;gap:12px}
  .hero-meta li+li::before{display:none}
  .hero h1{font-size:8.4vw}
  .hero .ctas .btn{flex:1 1 100%}
  .countdown{margin-top:44px;gap:18px}
  .cd{gap:8px;width:100%}
  .cd li{min-width:0;flex:1;padding:12px 4px}
  .cd b{font-size:26px}
  .cd span{font-size:10px;letter-spacing:.1em}
  .facts li{padding:26px 18px}
  .facts ul{grid-template-columns:repeat(2,minmax(0,1fr))}
  .facts h3{font-size:4.2vw}
  .facts p{font-size:14px}
  .btn{white-space:normal;text-align:center;line-height:1.3;padding-top:10px;padding-bottom:10px}
  .sec-head{margin-bottom:44px}
  .h2{font-size:8.6vw}
  .aud .d{font-size:7.8vw}
  .aud ul{grid-template-columns:1fr 1fr;row-gap:12px;margin-top:44px}
  .about-grid,.venue-head,.foot-top{grid-template-columns:minmax(0,1fr);gap:44px}
  .why .body{grid-template-columns:minmax(0,1fr);padding-left:0;gap:24px}
  .why summary .num{width:30px}
  .venue-card{margin-top:44px}
  .venue-card img{aspect-ratio:4/3}
  .venue-card ul{left:14px;right:14px;bottom:14px}
  .sp-head{flex-direction:column;align-items:flex-start;margin-bottom:36px}
  .sp{flex-basis:230px}
  .sp .ph{height:280px}
  .row-list a{grid-template-columns:minmax(0,1fr) 28px;min-height:84px;padding:14px 18px}
  .row-list small{grid-column:1;grid-row:2;margin-top:-10px}
  .row-list a>span{grid-row:1/span 2;grid-column:2}
  .row-list b{font-size:6vw}
  .slots i{width:calc(50% - 8px);height:72px}
  .city-main,.city-main .in{min-height:380px}
  .city-main .in{padding:26px}
  .city-main .name{font-size:8.6vw}
  .city-soon{grid-template-columns:1fr}
  .city-soon>div{padding:26px}
  .city-soon .name{font-size:9vw}
  .m-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .m-grid img{height:170px}
  .foot{padding-top:80px}
}
@media (max-width:400px){
  .wrap{padding:0 14px}
  .nav .wrap{gap:10px}
  .city-switch{padding-left:10px}
  .city-switch>button{padding-right:18px}
  .city-switch>button strong{font-size:12px}
  .logo{font-size:14px}
  .cd b{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none !important}
}

/* mail CTAs: visible address under every mailto (no dead end if the mail handler fails) */
.mail-note{margin:14px 0 0;font:400 14px/1.5 var(--body);color:var(--muted)}
.mail-note a{color:var(--ink);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.sec-dark .mail-note,.sec-dark .mail-note a{color:#fff}
.foot-top .foot-sub{margin:14px 0 0;font:400 16px/1.5 var(--body);color:var(--muted)}
.foot-top .mail-note{margin:14px 0 0;font:400 14px/1.5 var(--body);max-width:none}
.interest small{display:block;margin-bottom:14px}
.choices{display:flex;flex-wrap:wrap;gap:12px}
.choices .when{font-weight:500;letter-spacing:.06em;opacity:.75}
@media (max-width:720px){
  .choices .btn{flex:1 1 100%}
}

/* visually hidden, still read by screen readers (heading outline; audit 2026-10-06) */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}