/* =========================================================
   Alexander Zverev Foundation — shared system
   Register: brand · Lane: athletic / neon-poster
   ========================================================= */

:root{
  --ink:#0B0B0C;          /* near-black canvas (chroma 0) */
  --ink-2:#141416;        /* raised dark surface */
  --ink-3:#1c1c1f;
  --white:#F4F4F2;        /* true off-white */
  --paper:#FFFFFF;
  --muted-d:#ABABA6;      /* muted on dark, >4.5:1 */
  --muted-l:#56564F;      /* muted on light, >4.5:1 */
  --neon:#D4FF2E;         /* Optic-Neon — committed brand color */
  --neon-deep:#B7E81A;
  --line-d:rgba(255,255,255,.14);
  --line-l:rgba(11,11,12,.13);
  --display:"Clash Display","Barlow Condensed",system-ui,sans-serif;
  --body:"Barlow",system-ui,-apple-system,sans-serif;
  --ease-out:cubic-bezier(.22,1,.36,1);
  --ease-io:cubic-bezier(.76,0,.24,1);
  --maxw:1300px;
  --pad:clamp(86px,11vw,158px);
  /* semantic z-scale */
  --z-deco:0; --z-base:1; --z-sticky:40; --z-header:60; --z-menu:80; --z-top:100;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{
  font-family:var(--body);background:var(--ink);color:var(--white);
  font-size:18px;line-height:1.55;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:.98;letter-spacing:-.025em;text-wrap:balance}
p{text-wrap:pretty}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:var(--neon);color:var(--ink)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,4vw,40px)}
.pad{padding:var(--pad) 0}
.pad-t{padding-top:var(--pad)}
section{position:relative}
.on-dark{background:var(--ink);color:var(--white)}
.on-light{background:var(--white);color:var(--ink)}
.on-ink2{background:var(--ink-2);color:var(--white)}

/* ---- section label (neon dot, never a tracked mono eyebrow) ---- */
.label{font-family:var(--body);font-weight:700;font-size:13px;letter-spacing:.02em;
  text-transform:uppercase;display:inline-flex;align-items:center;gap:11px;line-height:1}
.label::before{content:"";width:9px;height:9px;background:var(--neon);border-radius:50%;flex:none;
  box-shadow:0 0 0 5px rgba(212,255,46,.16)}
.on-dark .label{color:var(--neon)}
.on-light .label{color:var(--ink)}
.on-light .label::before{background:var(--ink);box-shadow:0 0 0 5px rgba(11,11,12,.08)}

.hl{background:var(--neon);color:var(--ink);padding:0 .12em;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.neon-t{color:var(--neon)}
.lead-eyebrow{display:block}

/* ---- buttons ---- */
.btn{font-family:var(--body);font-weight:700;font-size:15px;min-height:50px;padding:0 30px;
  border-radius:999px;border:2px solid transparent;cursor:pointer;display:inline-flex;
  align-items:center;justify-content:center;gap:9px;white-space:nowrap;
  transition:transform .16s var(--ease-out),background .2s,color .2s,border-color .2s,box-shadow .2s}
.btn:active{transform:scale(.97)}
.btn svg{width:17px;height:17px}
.btn-neon{background:var(--neon);color:var(--ink);box-shadow:0 8px 30px rgba(212,255,46,.22)}
.btn-neon:hover{background:var(--neon-deep);box-shadow:0 10px 38px rgba(212,255,46,.34)}
.btn-ink{background:var(--ink);color:var(--white)}
.btn-ink:hover{background:#000}
.btn-out-d{background:transparent;color:var(--white);border-color:rgba(255,255,255,.32)}
.btn-out-d:hover{border-color:var(--white);background:rgba(255,255,255,.05)}
.btn-out-l{background:transparent;color:var(--ink);border-color:rgba(11,11,12,.22)}
.btn-out-l:hover{border-color:var(--ink);background:rgba(11,11,12,.04)}

/* ---- header ---- */
header.site{position:fixed;inset:0 0 auto;z-index:var(--z-header);
  transition:background .35s var(--ease-out),border-color .35s,backdrop-filter .35s}
header.site::after{content:"";position:absolute;inset:0;border-bottom:1px solid transparent;pointer-events:none;transition:border-color .35s}
header.site.solid{background:rgba(11,11,12,.98);backdrop-filter:blur(18px) saturate(150%);-webkit-backdrop-filter:blur(18px) saturate(150%)}
header.site.solid::after{border-bottom-color:var(--line-d)}
.nav{display:flex;align-items:center;justify-content:space-between;height:92px;gap:24px}
.brand{display:flex;align-items:center;gap:15px}
.brand img{height:58px;width:auto;filter:brightness(0) invert(1)}
.brand b{font-family:var(--display);font-weight:600;font-size:15px;line-height:1;max-width:150px;color:var(--white)}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-weight:600;font-size:14.5px;color:var(--white);opacity:.72;position:relative;transition:opacity .2s}
.nav-links a:hover,.nav-links a[aria-current="page"]{opacity:1}
.nav-links a[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--neon)}
.nav-right{display:flex;align-items:center;gap:14px}
.burger{display:none;width:46px;height:46px;border:1px solid var(--line-d);border-radius:999px;
  background:rgba(255,255,255,.04);align-items:center;justify-content:center;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--white);position:relative;transition:transform .3s var(--ease-out),opacity .2s}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--white);transition:transform .3s var(--ease-out)}
.burger span::before{top:-6px}.burger span::after{top:6px}
body.menu-open .burger span{background:transparent}
body.menu-open .burger span::before{transform:translateY(6px) rotate(45deg)}
body.menu-open .burger span::after{transform:translateY(-6px) rotate(-45deg)}

/* mobile menu sheet */
.menu{position:fixed;inset:0;z-index:var(--z-menu);background:var(--ink);
  transform:translateY(-100%);transition:transform .5s var(--ease-io);
  display:flex;flex-direction:column;justify-content:center;padding:40px clamp(20px,6vw,60px);visibility:hidden}
body.menu-open .menu{transform:translateY(0);visibility:visible}
.menu a{font-family:var(--display);font-weight:600;font-size:clamp(24px,6vw,40px);line-height:1.05;
  letter-spacing:-.02em;color:var(--white);padding:6px 0;display:flex;align-items:center;gap:16px}
.menu a .ix{font-family:var(--body);font-size:13px;font-weight:700;color:var(--neon);opacity:.8;width:28px}
.menu a:not(.menu-cta):hover{color:var(--neon)}
.menu a.menu-cta{margin-top:26px;font-family:var(--body);font-weight:700;font-size:16px;letter-spacing:0;
  color:var(--ink);min-height:50px;max-width:260px;justify-content:center}
.menu a.menu-cta:hover{color:var(--ink)}
.menu-close{position:absolute;top:18px;right:18px;width:48px;height:48px;border-radius:999px;
  border:1px solid var(--line-d);background:rgba(255,255,255,.05);color:var(--white);font-size:26px;
  line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer}
.menu-close:hover{background:rgba(255,255,255,.14)}
.menu .menu-ig{margin-top:20px;font-family:var(--body);font-size:15px;font-weight:600;color:var(--white);
  display:inline-flex;align-items:center;gap:10px}
.menu .menu-ig:hover{color:var(--neon)}
.menu .menu-ig svg{width:22px;height:22px;flex:none}
@media(max-width:920px){
  .nav-links{display:none}
  .burger{display:inline-flex}
  .nav-right .btn{display:none}
  .nav{height:70px}
  .brand img{height:42px}
}
@media(max-width:520px){
  .brand b{display:none}
  .brand img{height:38px}
}

/* ---- generic photo / figure helpers ---- */
.ph{overflow:hidden;background:var(--ink-3);position:relative}
.ph img{width:100%;height:100%;object-fit:cover;display:block}
.credit{position:absolute;right:9px;bottom:7px;font-size:10px;color:rgba(255,255,255,.62);
  letter-spacing:.02em;background:rgba(0,0,0,.25);padding:2px 6px;border-radius:4px;backdrop-filter:blur(3px)}
.tag-neon{position:absolute;background:var(--neon);color:var(--ink);font-weight:700;font-size:12px;
  letter-spacing:.03em;text-transform:uppercase;padding:9px 15px}

/* glass — only on dark with glow behind (per DESIGN.md) */
.glass{background:rgba(255,255,255,.055);backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);border:1px solid rgba(255,255,255,.16);
  box-shadow:0 12px 46px rgba(0,0,0,.42),inset 0 1px 0 rgba(255,255,255,.12)}

/* parallax images must overflow their frame so movement never reveals the bg */
.ph,.prog .pic,.founder-grid .pf{position:relative}
.prog .pic img{width:100%;height:100%;object-fit:cover}
.ph img[data-parallax],.prog .pic img[data-parallax],.founder-grid .pf img[data-parallax]{
  position:absolute;top:-15%;left:0;width:100%;height:130%;object-fit:cover;object-position:50% 30%}

/* fallback for browsers without aspect-ratio support (older mobile) */
@supports not (aspect-ratio: 1 / 1){
  .hero-fig{min-height:62vh}
  .prog .pic{min-height:300px}
  .mission-photo{min-height:420px}
  .founder-grid .pf{min-height:480px}
  .story-figs .ph{min-height:340px}
  .lw{min-height:120px}
  .gcard{min-height:120px}
}

/* ---- lightbox (glassmorphism backdrop) ---- */
.zoomable{cursor:zoom-in}
.lb{position:fixed;inset:0;z-index:var(--z-top);display:flex;align-items:center;justify-content:center;
  padding:clamp(16px,4vw,56px);opacity:0;visibility:hidden;transition:opacity .35s var(--ease-out),visibility .35s}
.lb.open{opacity:1;visibility:visible}
.lb-bg{position:absolute;inset:0;background:rgba(8,8,9,.55);
  backdrop-filter:blur(22px) saturate(150%);-webkit-backdrop-filter:blur(22px) saturate(150%)}
.lb figure{position:relative;z-index:1;max-width:min(1120px,93vw);margin:0;
  transform:scale(.96);transition:transform .4s var(--ease-out)}
.lb.open figure{transform:none}
.lb img{width:100%;height:auto;max-height:84vh;object-fit:contain;border-radius:8px;
  box-shadow:0 30px 90px rgba(0,0,0,.55);background:var(--ink-3)}
.lb figcaption{color:var(--white);text-align:center;margin-top:15px;font-size:14px;font-weight:600;letter-spacing:.02em}
.lb-close{position:fixed;top:clamp(14px,3vw,26px);right:clamp(14px,3vw,26px);z-index:2;width:50px;height:50px;
  border-radius:999px;border:1px solid var(--line-d);background:rgba(255,255,255,.07);color:var(--white);
  cursor:pointer;font-size:24px;line-height:1;display:flex;align-items:center;justify-content:center;
  backdrop-filter:blur(10px);transition:background .2s,transform .15s}
.lb-close:hover{background:rgba(255,255,255,.16)}
.lb-close:active{transform:scale(.94)}
@media (prefers-reduced-motion:reduce){.lb,.lb figure{transition:none}}

/* ---- footer ---- */
footer.site{background:var(--ink);color:var(--muted-d);padding:72px 0 38px;border-top:1px solid var(--line-d);position:relative;overflow:hidden}
footer.site::before{content:"";position:absolute;left:50%;top:-40%;width:680px;height:420px;transform:translateX(-50%);
  background:radial-gradient(ellipse,rgba(212,255,46,.10),transparent 64%);filter:blur(40px);z-index:0;pointer-events:none}
footer.site .wrap{position:relative;z-index:1}
.foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand img{height:30px;filter:brightness(0) invert(1)}
.foot-brand p{margin-top:18px;font-size:15px;max-width:32ch;line-height:1.55}
.fcol h4{font-weight:700;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--neon);margin-bottom:16px}
.fcol a{display:block;font-size:15px;margin-bottom:11px;transition:color .2s,transform .2s}
.fcol a:hover{color:var(--white);transform:translateX(3px)}
.fcol a.btn{display:inline-flex;margin-bottom:0}
.fcol a.btn:hover{transform:none;color:var(--ink)}
.foot-don{align-self:start}
.foot-bot{margin-top:54px;padding-top:24px;border-top:1px solid var(--line-d);display:flex;
  justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px}
.foot-bot a:hover{color:var(--white)}
@media(max-width:820px){.foot-top{grid-template-columns:1fr 1fr}}
@media(max-width:460px){.foot-top{grid-template-columns:1fr}}

/* ---- reveal system ----
   Default = fully visible (headless / reduced-motion safe).
   Only html.anim hides, and JS reveals each element. */
html.anim [data-rv]{opacity:0;transform:translateY(26px)}
html.anim [data-rv].in{opacity:1;transform:none;transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
html.anim [data-rv-clip]{clip-path:inset(0 0 100% 0)}
html.anim [data-rv-clip].in{clip-path:inset(0 0 0 0);transition:clip-path 1.1s var(--ease-io)}
html.anim [data-rv-img] img{transform:scale(1.12)}
html.anim [data-rv-img].in img{transform:scale(1);transition:transform 1.3s var(--ease-out)}

:focus-visible{outline:3px solid var(--neon);outline-offset:3px;border-radius:2px}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* =========================================================
   Shared subpage components
   ========================================================= */

/* page hero (interior pages) */
.page-hero{position:relative;padding:clamp(140px,17vw,210px) 0 clamp(56px,7vw,90px);overflow:hidden;background:var(--ink)}
.page-hero::before{content:"";position:absolute;top:-20%;right:-8%;width:55vw;height:80vh;
  background:radial-gradient(ellipse at 60% 40%,rgba(212,255,46,.14),transparent 62%);filter:blur(34px);z-index:0;pointer-events:none}
.page-hero .wrap{position:relative;z-index:1}
.page-hero h1{font-size:clamp(44px,8vw,104px);letter-spacing:-.035em;line-height:.94;margin-top:22px;max-width:15ch}
.page-hero .ph-sub{font-size:clamp(17px,1.5vw,21px);color:var(--muted-d);max-width:58ch;margin-top:26px;line-height:1.5}
.page-hero .crumbs{font-size:13px;font-weight:600;color:var(--muted-d);letter-spacing:.02em}
.page-hero .crumbs a:hover{color:var(--neon)}
.page-hero .crumbs span{color:var(--neon)}

/* full-bleed banner image */
.banner{position:relative;height:clamp(280px,46vw,560px);overflow:hidden;background:var(--ink-3)}
.banner img{width:100%;height:100%;object-fit:cover}
.banner .cap{position:absolute;left:0;bottom:0;padding:clamp(20px,4vw,40px);z-index:2;
  background:linear-gradient(0deg,rgba(11,11,12,.72),transparent);width:100%;color:var(--white)}
.banner .cap h2{font-size:clamp(24px,3.4vw,46px);max-width:18ch}
.banner .cap p{color:var(--muted-d);margin-top:8px;max-width:50ch}

/* program / alternating feature rows */
.prog{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,72px);align-items:center;
  padding:clamp(40px,6vw,84px) 0;border-bottom:1px solid var(--line-l)}
.on-dark .prog{border-bottom-color:var(--line-d)}
.prog:last-child{border-bottom:0}
.prog .pic{overflow:hidden;border-radius:6px;aspect-ratio:4/3}
.prog .pic img{will-change:transform}
.prog.flip .txt{order:2}.prog.flip .pic{order:1}
.prog .pnum{font-family:var(--display);font-weight:600;font-size:clamp(30px,4vw,52px);color:var(--neon-deep);line-height:.8;display:block;margin-bottom:14px}
.prog h3{font-size:clamp(27px,3.4vw,46px);letter-spacing:-.025em}
.prog p{margin-top:18px;font-size:17px;max-width:50ch}
.on-light .prog p{color:var(--muted-l)}
.on-dark .prog p{color:var(--muted-d)}
.prog .feat{margin-top:24px;display:flex;flex-direction:column;gap:11px}
.prog .feat li{list-style:none;display:flex;gap:12px;align-items:flex-start;font-size:15.5px;font-weight:500}
.on-light .prog .feat li{color:var(--muted-l)}.on-dark .prog .feat li{color:var(--muted-d)}
.prog .feat li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--neon);margin-top:8px;flex:none;box-shadow:0 0 0 4px rgba(212,255,46,.16)}
@media(max-width:820px){
  .prog{grid-template-columns:1fr;gap:26px}
  .prog.flip .txt{order:1}.prog.flip .pic{order:2}
  .prog .pic{aspect-ratio:16/10}
}

/* stat band */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-d);border:1px solid var(--line-d);border-radius:14px;overflow:hidden}
.on-light .stat-band{background:var(--line-l);border-color:var(--line-l)}
.stat-band .sb{background:var(--ink);padding:clamp(26px,3.4vw,40px) clamp(18px,2.4vw,28px)}
.on-light .stat-band .sb{background:var(--white)}
.stat-band .sb b{font-family:var(--display);font-weight:600;font-size:clamp(34px,4.4vw,58px);line-height:.9;
  display:block;font-variant-numeric:tabular-nums}
.on-dark .stat-band .sb b{color:var(--neon)}
.stat-band .sb span{display:block;margin-top:12px;font-size:14px;font-weight:600;line-height:1.4}
.on-dark .stat-band .sb span{color:var(--muted-d)}.on-light .stat-band .sb span{color:var(--muted-l)}
@media(max-width:760px){.stat-band{grid-template-columns:1fr 1fr}}

/* quote band */
.quote-band{text-align:center;max-width:24ch;margin:0 auto}
.quote-band .qq{font-family:var(--display);font-weight:600;font-size:clamp(30px,5vw,68px);line-height:1.04;letter-spacing:-.03em}
.quote-band .qa{margin-top:26px;font-weight:700;font-size:13px;letter-spacing:.06em;text-transform:uppercase}
.on-dark .quote-band .qa{color:var(--neon)}

/* gallery (masonry-ish responsive grid) */
.gallery{columns:3;column-gap:16px}
.gallery .gi{break-inside:avoid;margin-bottom:16px;overflow:hidden;border-radius:6px;position:relative;display:block}
.gallery .gi img{width:100%;display:block;transition:transform .6s var(--ease-out)}
.gallery .gi:hover img{transform:scale(1.04)}
.gallery .gi figcaption{position:absolute;left:0;bottom:0;width:100%;padding:16px 16px 13px;
  background:linear-gradient(0deg,rgba(11,11,12,.78),transparent);color:var(--white);
  font-size:13px;font-weight:600;opacity:0;transform:translateY(8px);transition:opacity .3s,transform .3s}
.gallery .gi:hover figcaption{opacity:1;transform:none}
@media(max-width:900px){.gallery{columns:2}}
@media(max-width:540px){.gallery{columns:1}}

/* CTA band */
.cta-band{background:var(--neon);color:var(--ink);text-align:center;overflow:hidden}
.cta-band h2{font-size:clamp(32px,5.6vw,76px);max-width:16ch;margin:0 auto;letter-spacing:-.03em;line-height:.98}
.cta-band p{font-size:clamp(16px,1.5vw,19px);max-width:46ch;margin:22px auto 0;color:#1a1a0f}
.cta-band .acts{display:flex;gap:14px;justify-content:center;margin-top:36px;flex-wrap:wrap}

/* simple two-col intro */
.intro-cols{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,64px);align-items:start}
.intro-cols .big{font-family:var(--display);font-weight:600;font-size:clamp(28px,3.6vw,46px);line-height:1.08;letter-spacing:-.02em}
.intro-cols .body p{margin-top:0}
.intro-cols .body p+p{margin-top:18px}
.on-light .intro-cols .body p{color:var(--muted-l)}.on-dark .intro-cols .body p{color:var(--muted-d)}
@media(max-width:820px){.intro-cols{grid-template-columns:1fr;gap:20px}}

/* ---- small shared bits ---- */
.kicker-h{font-size:clamp(34px,5.4vw,72px);letter-spacing:-.03em;line-height:.98}
.muted-d{color:var(--muted-d)}
.muted-l{color:var(--muted-l)}
.center{text-align:center}
.divider{height:1px;background:var(--line-d);border:0}
.on-light .divider{background:var(--line-l)}