/* Landing page for vitalinks.eu. Palette and type follow the brand guide: dark is the
   default, light is the alternate; the three accents keep their category meaning
   (food / exercise / water). */
:root{
  --bg:#0E2723; --surface:#153934; --raised:#1B453F; --line:#2A5049;
  --food:#F2A65A; --exercise:#90D161; --water:#7FC8B0;
  --text:#EFF6F2; --muted:#8FB2A8; --on-accent:#2B1A05;
  color-scheme:dark;
}
@media (prefers-color-scheme: light){
  :root{
    --bg:#F4F7F5; --surface:#FFFFFF; --raised:#EAF0EE; --line:#D5DFDB;
    --food:#A85A0C; --exercise:#3F7519; --water:#2A7A5E;
    --text:#132A25; --muted:#55716A; --on-accent:#FFFFFF;
    color-scheme:light;
  }
}
*{box-sizing:border-box}
/* The hero glow reaches past the column; this keeps it from making the page scroll sideways. */
html{-webkit-text-size-adjust:100%;scroll-padding-top:84px;overflow-x:clip}
body{overflow-x:hidden;overflow-x:clip}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,sans-serif;font-size:17px;line-height:1.55}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,.display{font-family:'Space Grotesk',Inter,system-ui,sans-serif;letter-spacing:-.015em;line-height:1.1;margin:0;text-wrap:balance}
p{margin:0}
.wrap{max-width:1080px;margin:0 auto;padding:0 max(20px,env(safe-area-inset-right)) 0 max(20px,env(safe-area-inset-left))}

/* header */
.top{display:flex;align-items:center;gap:12px;padding:14px 0;position:sticky;top:0;z-index:30}
/* The bar behind the sticky header spans the whole window, not just the 1080px column. */
.top::before{content:"";position:absolute;top:0;bottom:0;left:50%;width:100vw;transform:translateX(-50%);z-index:-1;background:var(--bg);background:color-mix(in srgb,var(--bg) 80%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.sections{display:flex;gap:2px;margin-right:6px}
.sections a{font-size:14px;font-weight:600;color:var(--muted);text-decoration:none;padding:8px 10px;border-radius:10px;transition:color .2s,background-color .2s}
.sections a:hover,.sections a[aria-current]{color:var(--text);background:var(--raised)}
.sections a:focus-visible{outline:3px solid var(--water);outline-offset:2px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:22px}
.brand img{width:40px;height:40px;border-radius:10px}
.top .spacer{flex:1}
.lang{font-size:14px;font-weight:600;color:var(--muted);text-decoration:none;padding:8px 10px;border-radius:10px}
.lang:hover{color:var(--text);background:var(--raised)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:16px;text-decoration:none;border-radius:14px;padding:14px 22px;border:1px solid transparent;min-height:48px}
.btn-primary{background:var(--food);color:var(--on-accent)}
.btn-ghost{border-color:var(--line);color:var(--text);background:var(--surface)}
.btn-small{padding:9px 14px;min-height:44px;font-size:14px;border-radius:12px}
.btn,.store-badge{transition:transform .18s ease,box-shadow .18s ease}
.btn:focus-visible,.lang:focus-visible{outline:3px solid var(--water);outline-offset:2px}

/* hero */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:36px 0 64px}
.tagline{display:inline-block;font-size:14px;font-weight:600;color:var(--water);border:1px solid var(--line);border-radius:999px;padding:6px 14px;margin-bottom:20px}
/* a soft glow in the brand colours behind the phone */
.hero{position:relative;isolation:isolate}
.hero::after{content:"";position:absolute;z-index:-1;right:-70px;top:50%;width:560px;height:560px;margin-top:-280px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle at 32% 34%,color-mix(in srgb,var(--water) 55%,transparent),transparent 62%),radial-gradient(circle at 70% 68%,color-mix(in srgb,var(--food) 42%,transparent),transparent 60%);
  filter:blur(56px);opacity:.62}
.hero h1{font-size:clamp(40px,7vw,68px);font-weight:700}
.hero h1 em{font-style:normal;color:var(--food)}
.lede{font-size:clamp(18px,2.2vw,21px);color:var(--muted);margin-top:20px;max-width:34em}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.fine{font-size:14px;color:var(--muted);margin-top:12px}
.stores{margin-top:22px;font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center}
.store-badge{display:inline-flex;line-height:0;border-radius:10px}
.store-badge img{display:block;max-width:none}
/* Google's Spanish badge and Apple's badge come without the clear space their guidelines ask for. */
.store-badge.pad,.store-badge.play:lang(es){margin:5px 0}
.on-phone,.browser-alt,.closing .stores,.l-short{display:none}
/* On a phone the store for that phone leads (a script in the hero moves the block up) and the
   browser buttons step back. */
.os-android .hero .stores,.os-ios .hero .stores{margin-top:24px}
.os-android .browser-alt,.os-ios .browser-alt{display:block;margin-top:22px}
.os-android .hero .cta,.os-ios .hero .cta{margin-top:10px}
.os-android .on-desktop,.os-ios .on-desktop{display:none}
.os-android .on-phone,.os-ios .on-phone{display:inline}
.os-android .stores-label,.os-ios .stores-label{flex-basis:100%;font-size:16px;font-weight:600;color:var(--text)}
.os-android .store-badge.apple,.os-ios .store-badge.play{display:none}
.os-android .store-badge.play,.os-ios .store-badge.apple{zoom:1.2}
/* Google's English file has clear space built in; pull it back so the badge lines up with the label. */
.os-android .store-badge.play:lang(en){margin:-8px 0 -8px -12px}
.os-android .cta .btn,.os-ios .cta .btn{padding:10px 16px;min-height:44px;font-size:15px}
.os-android .cta .btn-primary,.os-ios .cta .btn-primary{background:var(--surface);color:var(--text);border-color:var(--line)}
.os-android .closing .stores,.os-ios .closing .stores{display:flex;justify-content:center;text-align:center;margin-top:28px}
.os-android .closing .cta,.os-ios .closing .cta{margin-top:14px}
.store-badge:focus-visible{outline:3px solid var(--water);outline-offset:2px}

/* phone frame around real screenshots */
.phone{width:min(300px,78vw);margin:0 auto;border-radius:38px;border:9px solid var(--raised);background:var(--raised);overflow:hidden;box-shadow:0 30px 60px rgba(0,0,0,.28)}
.phone img{width:100%;height:auto}

/* a photo with a real screenshot overlapping its corner */
.duo{position:relative;width:min(400px,100%);margin:0 auto;padding-bottom:44px}
.duo .pic{width:80%;aspect-ratio:4/5;object-fit:cover;border-radius:28px;border:1px solid var(--line)}
.duo .phone{position:absolute;right:0;bottom:0;width:46%;margin:0;border-width:6px;border-radius:26px}

/* what you can track */
.chips{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:0 0 72px}
.chips li{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:15px;font-weight:500}

/* feature rows */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:56px 0;border-top:1px solid var(--line)}
.feature.flip .media{order:-1}
.kicker{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px}
.k-food{color:var(--food)} .k-exercise{color:var(--exercise)} .k-water{color:var(--water)}
.feature h2{font-size:clamp(28px,4vw,40px);font-weight:700}
.feature p{color:var(--muted);margin-top:16px;max-width:32em}
.note{font-size:14px;margin-top:14px;padding:10px 14px;border-radius:12px;background:var(--surface);border:1px solid var(--line);color:var(--muted)}

/* photo-calorie steps: three cards in a row; a swipeable strip on phones */
.feature.photo{display:block}
.feature.photo .intro p{max-width:38em}
.pill{display:inline-block;font-size:13px;font-weight:700;color:var(--food);border:1px solid var(--food);border-radius:999px;padding:4px 12px;margin-bottom:14px}
.note a,.card a{color:var(--water)}
.steps{list-style:none;padding:0;margin:32px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:s}
.steps>li{counter-increment:s;background:var(--surface);border:1px solid var(--line);border-radius:24px;overflow:hidden}
.steps>li>div{position:relative;padding:18px 18px 22px 64px}
.steps>li>div::before{content:counter(s);position:absolute;left:16px;top:18px;width:36px;height:36px;border-radius:50%;background:var(--food);color:var(--on-accent);font-family:'Space Grotesk',sans-serif;font-weight:700;display:flex;align-items:center;justify-content:center}
.steps>li>div>strong{display:block;font-family:'Space Grotesk',sans-serif;font-size:19px}
.steps>li>div>span{color:var(--muted);font-size:15px}
.shot{position:relative;aspect-ratio:4/5;overflow:hidden;background:var(--raised)}
.shot>img{width:100%;height:100%;object-fit:cover}
.shot.result{padding:6% 15% 0}
.shot.result>img{height:auto;border-radius:18px 18px 0 0;border:1px solid var(--line);border-bottom:0;box-shadow:0 14px 34px rgba(0,0,0,.22)}
.shot.result .example{left:auto;right:4%;top:3%;bottom:auto;transform:none}
.shot.screen{padding:9% 15% 0}
.shot.screen>img{height:auto;border-radius:26px 26px 0 0;border:7px solid var(--bg);border-bottom:0;box-shadow:0 18px 40px rgba(0,0,0,.25)}
/* viewfinder corners over the phone screen in the first photo */
.finder{position:absolute;left:21.5%;top:29.5%;width:23%;height:41%;opacity:.92;background:
  linear-gradient(#fff,#fff) 0 0/20px 3px,linear-gradient(#fff,#fff) 0 0/3px 20px,
  linear-gradient(#fff,#fff) 100% 0/20px 3px,linear-gradient(#fff,#fff) 100% 0/3px 20px,
  linear-gradient(#fff,#fff) 0 100%/20px 3px,linear-gradient(#fff,#fff) 0 100%/3px 20px,
  linear-gradient(#fff,#fff) 100% 100%/20px 3px,linear-gradient(#fff,#fff) 100% 100%/3px 20px;
  background-repeat:no-repeat}
/* example estimate labels over the second photo */
.tags{list-style:none;margin:0;padding:0}
.tag{position:absolute;display:flex;align-items:center;gap:7px;background:#fff;color:#132A25;border-radius:14px;padding:6px 11px 6px 6px;font-size:11px;font-weight:600;line-height:1.2;box-shadow:0 8px 20px rgba(0,0,0,.2)}
.tag img{width:30px;height:30px}
.tag b{display:block;font-family:'Space Grotesk',sans-serif;font-size:15px}
.tag.t1{left:5%;top:5%} .tag.t2{right:5%;top:5%} .tag.t3{left:5%;bottom:9%} .tag.t4{right:5%;bottom:9%}
.example{position:absolute;left:50%;bottom:2.2%;transform:translateX(-50%);font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:#fff;background:rgba(14,39,35,.72);border-radius:999px;padding:2px 10px}
.feature.photo .note{max-width:none}
figure{margin:0}

/* small cards */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;padding:56px 0;border-top:1px solid var(--line)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:26px}
.card-img{width:calc(100% + 52px);max-width:none;margin:-26px -26px 22px;aspect-ratio:3/2;object-fit:cover;border-radius:23px 23px 0 0}
.card h3{font-size:24px;font-weight:700}
.card p{color:var(--muted);margin-top:12px}
.card.wide{grid-column:1/-1}
.points{list-style:none;margin:16px 0 0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px 28px;color:var(--muted)}
.points li{position:relative;padding-left:26px}
.points li:last-child:nth-child(odd){grid-column:1/-1}
.points li::before{content:"";position:absolute;left:0;top:.42em;width:14px;height:8px;border-left:2px solid var(--water);border-bottom:2px solid var(--water);transform:rotate(-45deg) scale(.8)}

/* closing */
.closing{text-align:center;padding:72px 0 80px;border-top:1px solid var(--line)}
.closing h2{font-size:clamp(30px,5vw,48px);font-weight:700}
.closing h2 em{font-style:normal;color:var(--food)}
.closing .cta{justify-content:center}

/* follow us */
.social{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px 32px;padding:40px 0;border-top:1px solid var(--line)}
.social h2{font-size:26px;font-weight:700}
.social p{color:var(--muted);margin-top:8px;max-width:30em}
.social-links{display:flex;flex-wrap:wrap;gap:12px}
.social-links svg{flex:none}

footer{border-top:1px solid var(--line);padding:28px 0 40px;font-size:14px;color:var(--muted)}
footer nav{display:flex;flex-wrap:wrap;gap:0 20px;margin-bottom:10px}
footer a{color:var(--muted)}
footer nav a,.closing .fine a{display:inline-block;padding:11px 0}
footer a:hover{color:var(--text)}

/* Up to this width the column spans the whole window, so the hero glow is clipped at the
   window edge (on phones an unclipped glow lets the page be dragged sideways). */
@media (max-width:1080px){ .wrap{overflow-x:clip} }
@media (max-width:820px){
  .hero,.feature{grid-template-columns:1fr;gap:32px}
  .hero::after{right:auto;left:50%;top:auto;bottom:40px;width:420px;height:420px;margin:0 0 0 -210px}
  .hero{padding:20px 0 48px}
  .feature{padding:44px 0}
  .feature.flip .media{order:0}
  .steps{grid-template-columns:none;grid-auto-flow:column;grid-auto-columns:80%;overflow-x:auto;scroll-snap-type:x mandatory;margin:28px -20px 0;padding:0 20px 8px;scroll-padding:0 20px}
  .steps>li{scroll-snap-align:start}
  .cards{grid-template-columns:1fr;padding:44px 0}
  .points{grid-template-columns:1fr}
  .stores-label{flex-basis:100%}
  .top .btn-small{display:none}
  /* the landing page keeps its button in the sticky header and drops the guide link (it is in the footer) */
  .top:has(.sections) .btn-small{display:inline-flex}
  .top:has(.sections)>.lang[data-track]{display:none}
}
/* narrow phones: the language link shrinks to its code, the button to fit one line */
@media (max-width:400px){ .top .l-full{display:none} .top .l-short{display:inline} }
@media (max-width:360px){ .top{gap:6px} .top .btn-small{padding:9px 10px;font-size:13px;white-space:nowrap} }
@media (max-width:340px){ .top:has(.sections)>.lang[hreflang]{display:none} }
@media print{ .top{position:static} .hero::after{display:none} .btn-primary{background:none;color:var(--text);border-color:var(--line)} }
@media (max-width:1000px){ .sections{display:none} }

/* ---- motion ----
   Everything here is decoration: the page reads the same without it, and it is switched
   off for anyone whose device asks for reduced motion. */
@media screen and (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
  /* landing <-> guide: cross-fade the page, keep the header still */
  @view-transition{navigation:auto}
  .top{view-transition-name:site-header}

  @media (hover:hover){
    .btn:hover,.store-badge:hover{transform:translateY(-2px)}
    .btn-primary:hover{box-shadow:0 10px 24px color-mix(in srgb,var(--food) 35%,transparent)}
  }
  .btn:active,.store-badge:active{transform:translateY(0) scale(.98)}

  /* the hero settles in on load */
  @keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
  @keyframes settle{from{opacity:0;transform:translateY(28px) scale(.97)}to{opacity:1;transform:none}}
  .hero>div:first-child>*{animation:rise .7s cubic-bezier(.2,.7,.2,1) both}
  .hero>div:first-child>:nth-child(2){animation-delay:.06s}
  .hero>div:first-child>:nth-child(3){animation-delay:.12s}
  .hero>div:first-child>:nth-child(4){animation-delay:.18s}
  .hero>div:first-child>:nth-child(5){animation-delay:.24s}
  .hero>div:first-child>:nth-child(6){animation-delay:.3s}
  .hero>div:first-child>:nth-child(7){animation-delay:.36s}
  .hero>.phone{animation:settle .9s cubic-bezier(.2,.7,.2,1) .12s both}

  /* landing.js adds .rv to blocks below the fold and .in when they scroll into view */
  .rv{opacity:0;transform:translateY(26px)}
  .rv.in{opacity:1;transform:none;transition:opacity .7s cubic-bezier(.2,.7,.2,1) var(--d,0s),transform .7s cubic-bezier(.2,.7,.2,1) var(--d,0s)}
  /* the estimate labels land on the plate one by one */
  .rv .tag{opacity:0;transform:translateY(8px) scale(.9)}
  .rv.in .tag{opacity:1;transform:none;transition:opacity .45s ease,transform .45s cubic-bezier(.3,1.4,.5,1)}
  .rv.in .tag.t1{transition-delay:.55s} .rv.in .tag.t2{transition-delay:.72s}
  .rv.in .tag.t3{transition-delay:.89s} .rv.in .tag.t4{transition-delay:1.06s}
  .rv .example{opacity:0}
  .rv.in .example{opacity:1;transition:opacity .4s ease 1.3s}
  /* the viewfinder focuses once */
  @keyframes focus{0%{transform:scale(1.18);opacity:0}100%{transform:none;opacity:.92}}
  .rv .finder{opacity:0}
  .rv.in .finder{animation:focus .8s cubic-bezier(.2,.7,.2,1) .45s both}
}

/* ---- motion, second pass ---- */
@media screen and (prefers-reduced-motion:no-preference){
  /* the glow drifts and the hero phone floats, both slowly */
  @keyframes glow{from{transform:translate(-18px,14px) scale(.96)}to{transform:translate(22px,-16px) scale(1.06)}}
  .hero::after{animation:glow 14s ease-in-out infinite alternate}
  @keyframes float{from{transform:translateY(0)}to{transform:translateY(-10px)}}
  .hero>.phone{animation:settle .9s cubic-bezier(.2,.7,.2,1) .12s both,float 5.5s ease-in-out 1.1s infinite alternate}

  /* depth: screenshots travel a little against the scroll, the photo less than the phone
     in front of it. Browsers without scroll-driven animations simply keep them still. */
  @supports (animation-timeline:view()){
    @keyframes depth{from{transform:translateY(var(--travel,36px))}to{transform:translateY(calc(var(--travel,36px) * -1))}}
    .feature .media>.phone,.duo>.pic,.duo>.phone{animation:depth linear both;animation-timeline:view();animation-range:entry 0% exit 100%}
    .duo>.pic{--travel:18px}
    .duo>.phone{--travel:48px}
  }
}