/* Rezonans Ukrainian Summer Camp
   Layout: friendly multi-page camp site; soft-blue hero with a yellow summer pill, white bands, blue + warm-yellow accents used sparingly. */
:root{
  --bg:#FFFFFF; --soft:#EEF4FF; --soft-2:#F7FAFF; --ink:#13254D; --muted:#55678F; --line:#DFE7F5;
  --blue:#2E6BD6; --blue-deep:#173E8C; --on-blue:#FFFFFF; --yellow:#FFD84A; --yellow-soft:#FFF3C4; --on-yellow:#173E8C;
  --shadow:0 1px 2px rgba(19,37,77,.06),0 14px 34px -14px rgba(19,37,77,.22);
  --display:"Bricolage Grotesque","Avenir Next","Segoe UI",system-ui,sans-serif;
  --body:"Figtree","Segoe UI",system-ui,-apple-system,sans-serif;
  --r:16px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0C1528; --soft:#12203B; --soft-2:#0F1B33; --ink:#E8EEFB; --muted:#A3B3D3; --line:#22314F;
  --blue:#5C93F0; --blue-deep:#BFD3FA; --on-blue:#08142B; --yellow:#FFD84A; --yellow-soft:#3A3315; --on-yellow:#FFE88A;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 34px -14px rgba(0,0,0,.6); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0C1528; --soft:#12203B; --soft-2:#0F1B33; --ink:#E8EEFB; --muted:#A3B3D3; --line:#22314F;
  --blue:#5C93F0; --blue-deep:#BFD3FA; --on-blue:#08142B; --yellow:#FFD84A; --yellow-soft:#3A3315; --on-yellow:#FFE88A;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 34px -14px rgba(0,0,0,.6); color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--bg)}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--display);line-height:1.08;letter-spacing:-.02em;text-wrap:balance;margin:0;color:var(--blue-deep)}
p{margin:0}
.wrap{max-width:1140px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.band{padding-block:clamp(56px,8vw,96px)}
.band.soft{background:var(--soft-2);border-block:1px solid var(--line)}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--blue)}
.lead{color:var(--muted);font-size:clamp(17px,2vw,19px);max-width:58ch}
.sec-head{display:grid;gap:12px;margin-bottom:40px;max-width:720px}
.sec-head h2{font-size:clamp(30px,4.4vw,44px)}
:focus-visible{outline:3px solid var(--yellow);outline-offset:3px;border-radius:6px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font:700 16px/1 var(--body);padding:16px 24px;border-radius:999px;text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,border-color .15s}
.btn:hover{transform:translateY(-1px)}
.btn-blue{background:var(--blue);color:var(--on-blue);box-shadow:0 10px 22px -12px var(--blue)}
.btn-yellow{background:var(--yellow);color:#173E8C}
.btn-line{color:var(--ink);border-color:var(--line);background:var(--bg)}
.btn-line:hover{border-color:var(--blue)}
.link{font-weight:700;color:var(--blue);text-decoration:none}
.link:hover{text-decoration:underline;text-underline-offset:4px}
.pill{display:inline-flex;align-items:center;gap:8px;background:var(--yellow-soft);color:var(--on-yellow);font-weight:700;font-size:14px;padding:8px 16px;border-radius:999px}
.pill::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--yellow)}

/* header */
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:70px;position:relative}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font:800 22px/1 var(--display);letter-spacing:-.02em;color:var(--blue-deep);white-space:nowrap}
.logo-mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(#2E6BD6 50%,#FFD84A 50%);flex:none}
.logo small{display:block;font:600 11px/1.2 var(--body);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:3px}
.nav-links{display:flex;gap:26px;font-weight:600;font-size:15.5px}
.nav-links a{text-decoration:none;color:var(--muted);padding-block:6px;border-bottom:2px solid transparent}
.nav-links a:hover{color:var(--ink)}
.nav-links a[aria-current="page"]{color:var(--blue-deep);border-bottom-color:var(--yellow)}
.nav-cta{padding:12px 20px!important;font-size:15px!important}
.menu-btn{display:none;background:transparent;border:1.5px solid var(--line);color:var(--ink);border-radius:999px;padding:10px 16px;font:700 15px var(--body);cursor:pointer}
@media (max-width:900px){
  .menu-btn{display:inline-flex}
  .nav-cta{display:none!important}
  .nav-links{display:none;position:absolute;top:70px;left:0;right:0;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:6px max(20px,env(safe-area-inset-right,0px)) 16px max(20px,env(safe-area-inset-left,0px))}
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);font-size:17px}
  .nav-links a[aria-current="page"]{color:var(--blue);border-bottom-color:var(--line)}
}

/* photos: a soft placeholder until the real image is in /images */
.photo{position:relative;border-radius:22px;overflow:hidden;background:linear-gradient(160deg,#DCE8FF,#F3F7FF);aspect-ratio:4/3;max-width:100%;box-shadow:var(--shadow)}
.photo::after{content:attr(data-label);position:absolute;left:16px;bottom:14px;font:600 13px var(--body);color:#3C5A9A;background:rgba(255,255,255,.8);padding:6px 10px;border-radius:999px}
.photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.photo:has(img)::after{display:none}

/* home hero */
.hero{background:linear-gradient(170deg,var(--soft),var(--bg) 78%);padding-block:clamp(44px,7vw,88px) clamp(52px,7vw,88px)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,64px);align-items:center}
.hero-grid>*{min-width:0}
.hero h1{font-size:clamp(40px,6.4vw,70px);font-weight:800;margin:20px 0 18px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero .photo{aspect-ratio:5/4}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}}

/* quick facts */
.facts{display:grid;grid-template-columns:repeat(4,1fr);background:var(--bg);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.facts div{padding:22px 24px;display:grid;gap:4px;min-width:0}
.facts div+div{border-left:1px solid var(--line)}
.facts small{font-size:12.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.facts strong{font:800 clamp(19px,2.2vw,23px)/1.2 var(--display);color:var(--blue-deep)}
.facts div>span{color:var(--muted);font-size:14.5px}
@media (max-width:860px){.facts{grid-template-columns:1fr 1fr}.facts div:nth-child(3){border-left:0}.facts div:nth-child(n+3){border-top:1px solid var(--line)}}
@media (max-width:420px){.facts{grid-template-columns:1fr}.facts div+div{border-left:0;border-top:1px solid var(--line)}}

/* STEM cards */
.stem{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stem-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;display:grid;gap:10px;align-content:start}
.band:not(.soft) .stem-card{background:var(--soft-2)}
.letter{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font:800 26px var(--display);background:var(--blue);color:var(--on-blue)}
.stem-card:nth-child(even) .letter{background:var(--yellow);color:#173E8C}
.stem-card h3{font-size:21px}
.stem-card p{color:var(--muted);font-size:15.5px}
.also{margin-top:22px;color:var(--muted)}
@media (max-width:960px){.stem{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.stem{grid-template-columns:1fr}}

/* split sections */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:center}
.split>*{min-width:0}
.split .prose{display:grid;gap:16px}
.split .prose p{color:var(--muted);font-size:17.5px}
.ticks{list-style:none;margin:6px 0 0;padding:0;display:grid;gap:10px}
.ticks li{display:grid;grid-template-columns:24px 1fr;gap:12px}
.ticks li::before{content:"";width:22px;height:22px;margin-top:2px;border-radius:50%;background:var(--yellow-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232E6BD6' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/13px no-repeat}
@media (max-width:860px){.split{grid-template-columns:1fr}.split.flip .photo{order:-1}}

/* page hero */
.page-hero{background:linear-gradient(170deg,var(--soft),var(--bg) 85%);padding-block:clamp(44px,7vw,80px) clamp(36px,5vw,56px)}
.page-hero h1{font-size:clamp(38px,5.8vw,60px);font-weight:800;margin:16px 0}

/* registration */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--bg);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:16px;min-width:520px}
th,td{text-align:left;padding:15px 20px;border-bottom:1px solid var(--line)}
th{font-size:12.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);background:var(--soft-2)}
tbody tr:last-child td{border-bottom:0}
td.num{font-variant-numeric:tabular-nums;font-weight:700;color:var(--blue-deep);white-space:nowrap}
.short{display:inline-block;margin-left:8px;font-size:12.5px;font-weight:700;background:var(--yellow-soft);color:var(--on-yellow);padding:3px 9px;border-radius:999px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:26px;display:grid;gap:10px;align-content:start}
.step-n{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font:800 16px var(--display);background:var(--blue);color:var(--on-blue)}
.step h3{font-size:20px}
.step p{color:var(--muted);font-size:15.5px}
.policy{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 32px;margin-top:28px;padding:24px;border-radius:var(--r);background:var(--yellow-soft);color:var(--on-yellow)}
.policy p{font-size:15.5px}
@media (max-width:860px){.steps,.policy{grid-template-columns:1fr}}

/* gallery */
.years{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.year{display:grid;gap:12px;text-decoration:none;border-radius:var(--r);padding:12px 12px 16px;background:var(--bg);border:1px solid var(--line);transition:transform .15s,box-shadow .15s}
.year:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.year .photo{border-radius:12px;box-shadow:none;aspect-ratio:4/3}
.year .photo::after{font-size:11.5px}
.year b{font:800 22px var(--display);color:var(--blue-deep);padding-inline:4px}
.year>span{font-size:14px;color:var(--muted);padding-inline:4px;margin-top:-8px}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,48px);align-items:start}
.contact-grid>*{min-width:0}
.c-list{display:grid;gap:12px}
.c-item{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;display:grid;grid-template-columns:1fr auto;gap:4px 12px;align-items:center}
.c-item small{grid-column:1/-1;font-size:12.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.c-item>a,.c-item>span{font:700 clamp(16px,2.1vw,19px) var(--display);color:var(--blue-deep);text-decoration:none;overflow-wrap:anywhere}
.copy{font:700 13px var(--body);background:var(--soft);color:var(--blue);border:0;border-radius:999px;padding:8px 14px;cursor:pointer}
.map-card{background:var(--soft);border-radius:22px;padding:clamp(24px,4vw,36px);display:grid;gap:14px}
.map-card p{color:var(--muted)}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}}

/* CTA band */
.cta{background:var(--blue);color:#fff;border-radius:26px;padding:clamp(30px,5vw,56px);display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:24px}
.cta h2{color:#fff;font-size:clamp(28px,4.2vw,42px)}
.cta p{opacity:.9;margin-top:10px;max-width:46ch}
:root[data-theme="dark"] .cta{background:#1E4FA8}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .cta{background:#1E4FA8}}

/* footer */
footer{background:var(--soft-2);border-top:1px solid var(--line);padding-block:48px 36px;color:var(--muted);font-size:15px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
.foot-grid>*{min-width:0}
.foot-grid h3{font:700 13px var(--body);letter-spacing:.1em;text-transform:uppercase;color:var(--ink);margin-bottom:12px}
.foot-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.foot-grid a{text-decoration:none;overflow-wrap:anywhere}
.foot-grid a:hover{color:var(--ink)}
.foot-base{margin-top:32px;padding-top:20px;border-top:1px solid var(--line);font-size:14px}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}.foot-grid>div:first-child{grid-column:1/-1}}
.reveal{animation:rise .6s ease both}
.reveal.d2{animation-delay:.1s}
@keyframes rise{from{transform:translateY(12px)}to{transform:none}}

/* bilingual: English by default, Ukrainian when html[data-lang="uk"] */
html:not([data-lang="uk"]) .i18n[lang="uk"]{display:none}
html[data-lang="uk"] .i18n[lang="en"]{display:none}
.nav-right{display:flex;align-items:center;gap:10px}
.lang{display:inline-flex;border:1.5px solid var(--line);border-radius:999px;padding:3px;background:var(--bg)}
.lang button{border:0;background:transparent;color:var(--muted);font:700 13px var(--body);padding:7px 10px;border-radius:999px;cursor:pointer}
.lang button[aria-pressed="true"]{background:var(--blue);color:var(--on-blue)}
@media (max-width:420px){.logo small{display:none}.lang button{padding:7px 8px}}

/* highlights */
.hl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.hl{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;display:grid;gap:10px;align-content:start}
.hl-ico{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;background:var(--soft);color:var(--blue)}
.hl:nth-child(even) .hl-ico{background:var(--yellow-soft);color:#B8860B}
.hl-ico svg{width:25px;height:25px}
.hl h3{font-size:21px}
.hl p{color:var(--muted);font-size:15.5px}
@media (max-width:960px){.hl-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.hl-grid{grid-template-columns:1fr}}

/* week rhythm */
.week{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.day{border-radius:var(--r);padding:26px;display:grid;gap:8px;align-content:start;background:var(--soft);border:1px solid var(--line)}
.day.y{background:var(--yellow-soft)}
.day small{font-size:12.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--blue)}
.day.y small{color:var(--on-yellow)}
.day h3{font-size:22px}
.day p{color:var(--muted);font-size:15.5px}
@media (max-width:860px){.week{grid-template-columns:1fr}}
.stem{grid-template-columns:repeat(5,1fr)}
@media (max-width:1060px){.stem{grid-template-columns:repeat(3,1fr)}}
@media (max-width:640px){.stem{grid-template-columns:1fr 1fr}}
@media (max-width:420px){.stem{grid-template-columns:1fr}}
.base-note{margin-top:26px;padding:20px 22px;border-radius:var(--r);border:1px dashed var(--line);color:var(--muted);max-width:820px}

/* real photos */
.photo{background:var(--soft)}
.photo::after{display:none}
.stem-card.has-photo{padding:0;overflow:hidden;gap:0}
.card-photo{border-radius:0;box-shadow:none;aspect-ratio:4/3}
.stem-body{padding:20px 22px 24px;display:grid;gap:10px;align-content:start}
.stem-card.has-photo .letter{width:44px;height:44px;font-size:22px;margin-top:-42px;position:relative;z-index:2;box-shadow:0 0 0 4px var(--bg)}
.band:not(.soft) .stem-card.has-photo .letter{box-shadow:0 0 0 4px var(--soft-2)}
/* moments mosaic: one tall photo + four */
.moments{display:grid;grid-template-columns:1.2fr 1fr 1fr;grid-template-rows:repeat(2,minmax(0,1fr));gap:16px}
.moment{margin:0;position:relative;min-width:0}
.moment .photo{aspect-ratio:auto;height:100%;min-height:200px;border-radius:18px}
.moment:first-child{grid-row:span 2}
.moment:first-child .photo{min-height:420px}
.moment figcaption{position:absolute;left:12px;bottom:12px;z-index:2;font:700 13px var(--body);color:#173E8C;background:rgba(255,255,255,.92);padding:6px 12px;border-radius:999px}
@media (max-width:760px){.moments{grid-template-columns:1fr 1fr;grid-template-rows:none}.moment:first-child{grid-column:span 2;grid-row:auto}.moment:first-child .photo{min-height:300px}.moment .photo{min-height:170px}}
/* founder */
.founder{display:grid;grid-template-columns:auto 1fr;gap:clamp(28px,5vw,64px);align-items:center}
.founder>*{min-width:0}
.founder-photo{width:clamp(220px,28vw,320px);aspect-ratio:1/1;max-width:100%;border-radius:50%;overflow:hidden;box-shadow:0 0 0 8px var(--yellow-soft),0 0 0 14px var(--soft),var(--shadow)}
.founder-photo img{width:100%;height:100%;object-fit:cover;object-position:center 30%}
.founder .prose p{color:var(--muted);font-size:17.5px}
.signoff{font:700 18px var(--display)!important;color:var(--blue-deep)!important}
@media (max-width:760px){.founder{grid-template-columns:1fr;justify-items:start}}
.founder .prose{display:grid;gap:16px}
.hero .photo{aspect-ratio:7/5}