/* Wetsuit finder v2: one question per screen, then swipe.
   Branding per Nick 21 Oct 2026: black, white and light blue, white Underground "Ride better." logo. */
:root{
  color-scheme: light;
  --ink:#000; --white:#fff; --blue:#08D9D6; --blue-soft:#DDF8F7;
  --page:#F2F2F2; --muted:#5A5A5A; --line:#D6D6D6;
  --font:"TeX Gyre Adventor","Century Gothic","Avenir Next",Arial,sans-serif;
  --max:34rem;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0}
body{background:var(--page);color:var(--ink);font:16px/1.5 var(--font);-webkit-font-smoothing:antialiased;
  display:flex;flex-direction:column;min-height:100dvh}
img{display:block;max-width:100%}
button{font:inherit;color:inherit;cursor:pointer}
:where(a,button,input,summary):focus-visible{outline:3px solid var(--blue);outline-offset:2px}

/* ── header: bigger, black, white logo ─── */
.bar{position:sticky;top:0;z-index:20;background:var(--ink);display:flex;justify-content:center;
  padding:1rem 1rem calc(1rem + 4px);padding-top:max(1rem,env(safe-area-inset-top))}
.bar .logo img{width:clamp(220px,62vw,300px);height:auto}
.progress{position:absolute;left:0;right:0;bottom:0;height:5px;background:#222}
.progress i{display:block;height:100%;width:0;background:var(--blue);transition:width .3s ease}

/* ── screens ───────────────────────────── */
main{flex:1;display:flex;flex-direction:column}
.screen{width:min(100% - 2rem,var(--max));margin:0 auto;padding:1.75rem 0 2rem;display:flex;flex-direction:column;animation:in .28s ease}
.screen[hidden]{display:none}
@keyframes in{from{opacity:0;transform:translateX(18px)}to{opacity:1;transform:none}}
.screen.backwards{animation-name:inback}
@keyframes inback{from{opacity:0;transform:translateX(-18px)}to{opacity:1;transform:none}}

.q-num{margin:0 0 .4rem;font-size:.75rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
h1,h2{margin:0 0 .75rem;line-height:1.05;text-transform:uppercase;letter-spacing:-.005em}
h2{font-size:clamp(1.6rem,1.3rem + 1.4vw,2.2rem)}
.hint{margin:0 0 1.25rem;color:var(--muted);font-size:.95rem}

/* intro */
.intro{justify-content:center;text-align:center;flex:1}
.intro h1{font-size:clamp(2.4rem,1.9rem + 3.6vw,3.6rem);margin-bottom:.75rem}
.intro .sub{font-size:1.25rem;font-weight:700;margin:0 auto 1.5rem}
.how{list-style:none;counter-reset:n;margin:0 auto 2rem;padding:0;text-align:left;max-width:20rem}
.how li{counter-increment:n;display:flex;align-items:center;gap:.75rem;padding:.5rem 0;font-size:1rem}
.how li::before{content:counter(n);flex:none;display:grid;place-items:center;width:2rem;height:2rem;border-radius:50%;
  background:var(--blue);color:var(--ink);font-weight:700}
.trust{margin:1.75rem auto 0;font-size:.8rem;color:var(--muted);max-width:30ch}

/* options */
.opts{display:flex;flex-direction:column;gap:.6rem}
.opts button{display:flex;flex-direction:column;align-items:flex-start;gap:.15rem;text-align:left;width:100%;
  min-height:58px;padding:.85rem 1.1rem;background:var(--white);border:2px solid var(--white);
  font-size:1.1rem;font-weight:700;box-shadow:0 1px 2px rgba(0,0,0,.06);transition:border-color .12s,transform .08s}
.opts button small{font-size:.82rem;font-weight:400;color:var(--muted)}
.opts button small:empty{display:none}
.opts button:hover{border-color:var(--ink)}
.opts button:active{transform:scale(.98)}
.opts button.on{border-color:var(--ink);background:var(--ink);color:var(--white)}
.opts button.on small{color:rgba(255,255,255,.75)}

.go{width:100%;min-height:58px;border:0;background:var(--ink);color:var(--white);font-size:1.15rem;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;transition:background .15s,color .15s}
.go:hover{background:var(--blue);color:var(--ink)}
.go:disabled{opacity:.3;cursor:not-allowed;background:var(--ink);color:var(--white)}
.go.small{min-height:46px;font-size:.9rem}

.goback,.textlink{align-self:center;border:0;background:none;color:var(--ink);font-size:.95rem;
  text-decoration:underline;text-underline-offset:.25em;padding:.6rem .5rem}
.goback{margin-top:1.25rem;color:var(--muted)}
.goback:hover,.textlink:hover{color:var(--ink);text-decoration-color:var(--blue);text-decoration-thickness:3px}
.links{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap;margin-top:.5rem}

.nums{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin-bottom:1rem}
.nums label{display:block;background:var(--white);padding:.75rem 1rem;font-size:.75rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.nums span{display:flex;align-items:baseline;gap:.35rem;margin-top:.25rem;font-size:1rem;letter-spacing:0;text-transform:none;color:var(--ink)}
.nums input{width:100%;min-width:0;border:0;border-bottom:2px solid var(--ink);background:none;padding:.15rem 0;
  font:700 1.8rem var(--font);color:var(--ink);border-radius:0}
.nums input:focus{outline:none;border-bottom-color:var(--blue)}
.tip{background:var(--white);border-left:5px solid var(--blue);padding:.75rem 1rem;font-size:.88rem;margin-bottom:1.25rem}

/* ── results ───────────────────────────── */
.results{padding-top:1rem}
.match{background:var(--ink);color:var(--white);padding:1.1rem 1.2rem 1.2rem;margin-bottom:.75rem}
.match .k{display:block;font-size:.75rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--blue)}
.match h2{margin:.25rem 0 .6rem;font-size:clamp(1.6rem,1.35rem + 1.2vw,2rem);color:var(--white)}
.match p{margin:.35rem 0 0;font-size:.95rem;line-height:1.45;color:rgba(255,255,255,.9)}
.match b{background:var(--blue);color:var(--ink);padding:0 .3em}
.match .warn{border-left:3px solid var(--blue);padding-left:.6rem;margin-top:.7rem;font-size:.88rem}
.match .textlink{color:var(--white);padding:.4rem 0 0;font-size:.9rem;align-self:flex-start;display:inline-block}

.brands{display:flex;gap:.4rem;overflow-x:auto;padding:.1rem 0 .6rem;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.brands::-webkit-scrollbar{display:none}
.brands button{flex:none;min-height:38px;padding:0 .9rem;border:2px solid var(--line);background:var(--white);font-size:.85rem;font-weight:700}
.brands button.on{background:var(--ink);border-color:var(--ink);color:var(--white)}

.deck{position:relative;height:380px}
.card{position:absolute;inset:0;background:var(--white);display:flex;flex-direction:column;
  box-shadow:0 8px 24px rgba(0,0,0,.14);touch-action:pan-y;user-select:none;-webkit-user-select:none;
  transition:transform .3s ease,opacity .3s ease;will-change:transform}
.card.drag{transition:none}
.card.under{transform:scale(.95) translateY(10px);opacity:.7}
.card .img{height:210px;flex:none;display:flex;align-items:center;justify-content:center;padding:.75rem;background:#fff;cursor:pointer}
.card .img img{max-height:100%;width:auto;object-fit:contain;pointer-events:none}
.card .info{flex:1;padding:.75rem 1rem .85rem;border-top:1px solid var(--page)}
.card .brand{font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.card .name{margin:.1rem 0 .35rem;font-size:1rem;font-weight:700;line-height:1.25}
.card .line{display:flex;flex-wrap:wrap;align-items:center;gap:.35rem .6rem}
.card .price{font-size:1.3rem;font-weight:700}
.card .tag{font-size:.68rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;background:var(--page);padding:.2em .5em}
.card .size{margin-top:.4rem;font-size:.88rem;display:flex;flex-wrap:wrap;gap:.25rem .75rem;align-items:center}
.card .size b{background:var(--blue);padding:0 .35em}
.card .chart-link{border:0;background:none;padding:0;font-size:.85rem;text-decoration:underline;text-underline-offset:.2em}
.card .count{position:absolute;top:.6rem;right:.6rem;font-size:.75rem;font-weight:700;color:var(--muted);background:rgba(255,255,255,.9);padding:.15rem .5rem}
.stamp{position:absolute;top:1.25rem;padding:.3rem .8rem;border:4px solid;font-size:1.5rem;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;opacity:0;transform:rotate(-12deg);pointer-events:none;background:rgba(255,255,255,.9)}
.stamp.yes{left:1rem;color:var(--ink);border-color:var(--blue)}
.stamp.no{right:1rem;color:var(--ink);border-color:var(--ink);transform:rotate(12deg)}

.deck-btns{display:flex;justify-content:center;gap:1.75rem;margin-top:.9rem}
.deck-btns button{width:62px;height:62px;border-radius:50%;font-size:1.5rem;font-weight:700;box-shadow:0 4px 12px rgba(0,0,0,.12);transition:transform .1s}
.deck-btns button:active{transform:scale(.92)}
.deck-btns .nope{background:var(--white);color:var(--ink);border:2px solid var(--ink)}
.deck-btns .yes{background:var(--blue);color:var(--ink);border:2px solid var(--blue)}
.swipe-hint{text-align:center;font-size:.8rem;color:var(--muted);margin:.5rem 0 0}
.empty{background:var(--white);padding:1.5rem;text-align:center}
.empty p{margin:0 0 1rem}

/* ── picks ─────────────────────────────── */
.pick-list{display:flex;flex-direction:column;gap:.6rem;margin:.5rem 0 1rem}
.pick{display:grid;grid-template-columns:84px 1fr;gap:.85rem;background:var(--white);padding:.7rem;align-items:center}
.pick img{width:84px;height:84px;object-fit:contain;background:#fff}
.pick .name{font-weight:700;font-size:.95rem;line-height:1.25}
.pick .meta{font-size:.82rem;color:var(--muted);margin:.15rem 0 .45rem}
.pick .price{font-weight:700;font-size:1.1rem;margin-right:.5rem}
.pick .buy{display:inline-block;background:var(--ink);color:var(--white);text-decoration:none;font-size:.8rem;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;padding:.55rem .9rem;margin-top:.3rem}
.pick .buy:hover{background:var(--blue);color:var(--ink)}
.addon{background:var(--white);border-left:5px solid var(--blue);padding:.8rem 1rem;font-size:.9rem;margin:0 0 .6rem}
.addon a{color:var(--ink);font-weight:700}
.row{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:.4rem}
.ghost{flex:1;min-height:48px;border:2px solid var(--ink);background:none;font-weight:700;font-size:.85rem;letter-spacing:.04em;text-transform:uppercase;padding:0 .75rem}
.ghost:hover{background:var(--ink);color:var(--white)}

.faq{margin-top:2.25rem}
.faq h3{font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;margin:0 0 .6rem}
.faq details{background:var(--white);margin-bottom:.4rem}
.faq summary{list-style:none;cursor:pointer;padding:.95rem 2.5rem .95rem 1rem;font-weight:700;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:1rem;top:50%;transform:translateY(-50%);font-size:1.3rem;font-weight:400}
.faq details[open] summary{border-bottom:3px solid var(--blue)}
.faq details[open] summary::after{content:"\2212"}
.faq details p,.faq .warr{margin:0;padding:.75rem 1rem 0;font-size:.92rem}
.faq details > :last-child{padding-bottom:1rem}
.faq .warr{padding-left:2rem}
.faq .warr li{margin-bottom:.25rem}
.faq a{color:var(--ink);font-weight:700}
table.mini{width:calc(100% - 2rem);margin:.75rem 1rem 0;border-collapse:collapse;font-size:.88rem}
table.mini th,table.mini td{text-align:left;padding:.4rem .5rem;border-bottom:1px solid var(--page)}
table.mini th{font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;border-bottom:2px solid var(--ink)}

/* ── size charts pop-up ────────────────── */
.sheet{width:min(100%,40rem);max-width:100%;max-height:92dvh;margin:auto auto 0;padding:0;border:0;background:var(--white);color:var(--ink);
  display:none;flex-direction:column}
.sheet[open]{display:flex}
.sheet::backdrop{background:rgba(0,0,0,.6)}
@media(min-width:700px){.sheet{margin:auto}}
.sheet-head{display:flex;align-items:center;justify-content:space-between;background:var(--ink);color:var(--white);padding:.9rem 1rem}
.sheet-head h3{margin:0;font-size:1.1rem;letter-spacing:.06em;text-transform:uppercase}
.sheet .x{border:0;background:none;color:var(--white);font-size:1.3rem;width:40px;height:40px}
.sheet-tabs{display:flex;gap:.4rem;padding:.75rem 1rem 0;overflow-x:auto;scrollbar-width:none}
.sheet-tabs::-webkit-scrollbar{display:none}
.sheet-tabs button{flex:none;min-height:36px;padding:0 .9rem;border:2px solid var(--line);background:var(--white);font-size:.85rem;font-weight:700}
.sheet-tabs button.on{background:var(--ink);border-color:var(--ink);color:var(--white)}
.sheet-note{margin:.75rem 1rem 0;font-size:.88rem}
.sheet-note b{background:var(--blue);padding:0 .3em}
.sheet-table{overflow:auto;margin:.75rem 1rem 0;border:1px solid var(--line);flex:1;min-height:0}
.sheet-table table{border-collapse:collapse;width:100%;font-size:.85rem;min-width:24rem}
.sheet-table th,.sheet-table td{padding:.5rem .6rem;text-align:left;border-bottom:1px solid var(--page);white-space:nowrap}
.sheet-table th{position:sticky;top:0;background:var(--white);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;border-bottom:2px solid var(--ink)}
.sheet-table td:first-child{font-weight:700}
.sheet-table tr.you td{background:var(--blue-soft)}
.sheet-table tr.you td:first-child{box-shadow:inset 5px 0 0 var(--blue)}
.sheet-foot{margin:.6rem 1rem 1rem;font-size:.8rem;color:var(--muted)}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

/* keep the yes and no buttons in reach on phones, even with the bigger match box */
.deck-btns{position:sticky;bottom:0;z-index:5;margin:0 -1rem;padding:.7rem 1rem calc(.7rem + env(safe-area-inset-bottom));
  background:linear-gradient(to top,var(--page) 70%,rgba(242,242,242,0))}
@media (max-height:900px){
  .deck{height:315px}
  .card .img{height:150px}
}

/* ── prices, savings and stock (cards and picks) ── */
.was{font-size:.9rem;color:var(--muted);text-decoration:line-through}
.save{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;background:var(--ink);color:var(--white);padding:.2em .5em}
.card .line.tags{margin-top:.3rem}
.low{font-weight:700}
.low b,.card .size b{background:var(--blue);padding:0 .35em}

/* picks, laid out like a website listing */
.pick{display:grid;grid-template-columns:120px 1fr;gap:1rem;background:var(--white);padding:.85rem;align-items:start}
.pick .pimg{position:relative;display:block;background:#fff}
.pick .pimg img{width:120px;height:150px;object-fit:contain}
.pick .flag{position:absolute;top:0;left:0;background:var(--blue);color:var(--ink);font-size:.68rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;padding:.2em .45em}
.pick .brand{font-size:.7rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.pick .name{font-weight:700;font-size:1rem;line-height:1.25;margin:.1rem 0 .35rem}
.pick .line{display:flex;flex-wrap:wrap;align-items:center;gap:.3rem .5rem}
.pick .price{font-size:1.3rem;font-weight:700;margin:0}
.pick .stock{font-size:.85rem;margin:.35rem 0 .6rem}
.pick .buy{display:block;text-align:center;margin:0;padding:.8rem 1rem;font-size:.95rem}
.pick .via{font-size:.72rem;color:var(--muted);margin-top:.35rem;text-align:center}
@media(max-width:360px){.pick{grid-template-columns:90px 1fr}.pick .pimg img{width:90px;height:120px}}

/* ── email perk pop-out ────────────────── */
.perk{position:fixed;z-index:30;right:max(.75rem,env(safe-area-inset-right));bottom:max(.75rem,env(safe-area-inset-bottom));
  width:min(calc(100vw - 1.5rem),21rem);background:var(--ink);color:var(--white);padding:1.1rem 1.1rem 1rem;
  box-shadow:0 12px 32px rgba(0,0,0,.35);border-top:5px solid var(--blue);transform:translateX(115%);transition:transform .35s ease}
.perk.in{transform:none}
.perk-x{position:absolute;top:.35rem;right:.35rem;width:36px;height:36px;border:0;background:none;color:var(--white);font-size:1.1rem}
.perk-k{margin:0;font-size:.7rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--blue)}
.perk h3{margin:.2rem 2rem .35rem 0;font-size:1.2rem;line-height:1.15;text-transform:uppercase}
.perk-sub{margin:0 0 .75rem;font-size:.9rem}
.perk-sub strong{color:var(--blue)}
.perk form{display:flex;flex-direction:column;gap:.5rem}
.perk input{min-height:48px;border:2px solid var(--white);padding:0 .8rem;font:1rem var(--font);border-radius:0}
.perk input.bad{border-color:var(--blue);outline:2px solid var(--blue)}
.perk .go{background:var(--blue);color:var(--ink)}
.perk .go:hover{background:var(--white)}
.perk-fine{margin:.6rem 0 0;font-size:.7rem;line-height:1.4;color:rgba(255,255,255,.7)}
.perk-done{margin:.25rem 0 0;font-weight:700;color:var(--blue)}
.perk-tab{position:fixed;z-index:29;right:0;bottom:5.5rem;border:0;background:var(--blue);color:var(--ink);font-weight:700;font-size:.85rem;
  padding:.7rem .9rem;box-shadow:0 4px 14px rgba(0,0,0,.2)}

/* start screen: light background, all text black, black button that turns light blue (Nick, 21 Oct) */
.intro,.intro h1,.intro .sub,.intro .sub2,.intro .trust{color:var(--ink)}
.intro .sub{margin-bottom:.4rem}
.intro .sub2{font-size:1.05rem;margin:0 auto 2.25rem;max-width:24ch}

/* stock: "We have this in your size" plus an honest low-stock note */
.card .size .low,.pick .stock .low{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  border:2px solid var(--ink);padding:.05em .45em}
.pick .stock{display:flex;flex-wrap:wrap;gap:.35rem .6rem;align-items:center}

/* pop-out polish: phones get a slim bar that slides up from the bottom; email and button side by side */
.perk form{flex-direction:row}
.perk input{flex:1;min-width:0}
.perk .go{width:auto;flex:none;padding:0 1rem;min-height:48px;font-size:.85rem}
@media(max-width:599px){
  .perk{left:0;right:0;bottom:0;width:auto;padding:.9rem 1rem calc(.8rem + env(safe-area-inset-bottom));transform:translateY(110%)}
  .perk.in{transform:none}
  .perk h3{font-size:1.05rem;margin-bottom:.2rem}
  .perk-sub{font-size:.85rem;margin-bottom:.6rem}
  .perk-fine{font-size:.68rem;margin-top:.45rem}
  .perk-tab{bottom:1rem}
}

/* "Recommended for you" tag (replaces the low-stock notes) */
.reco{display:inline-block;background:var(--blue);color:var(--ink);font-size:.66rem;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;padding:.2em .5em;margin-bottom:.3rem}
.card .brand .reco{margin:0 .5rem 0 0;vertical-align:.08em}
.reco-row{margin-bottom:.1rem}
/* the best match stands out in the picks list */
.pick.top{outline:3px solid var(--blue);outline-offset:-3px}

/* ── 21 Oct round: Start again, clearer deck, bolder brands, sign-up banner ── */
.bar{align-items:center}
.bar .logo img{width:clamp(170px,46vw,280px)}
.restart-top{position:absolute;right:max(.75rem,env(safe-area-inset-right));top:50%;transform:translateY(-55%);
  display:inline-flex;align-items:center;gap:.35rem;min-height:36px;padding:0 .75rem;border:1.5px solid var(--white);
  background:transparent;color:var(--white);font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;border-radius:999px}
.restart-top span{font-size:1rem;line-height:1}
.restart-top:hover{background:var(--blue);border-color:var(--blue);color:var(--ink)}
.restart-top[hidden]{display:none}
@media(max-width:400px){.restart-top{padding:0 .55rem;font-size:.66rem;right:.5rem}.bar .logo img{width:160px}}

.how-to{background:var(--white);border-left:5px solid var(--blue);padding:.6rem .85rem;margin:0 0 .6rem;font-size:.9rem;line-height:1.4}
.how-to .i-yes{display:inline-grid;place-items:center;width:1.4rem;height:1.4rem;border-radius:50%;background:var(--blue);font-size:.75rem;vertical-align:-.15em}
.how-to .i-no{display:inline-grid;place-items:center;width:1.4rem;height:1.4rem;border-radius:50%;border:2px solid var(--ink);font-size:.7rem;vertical-align:-.15em}

.btn-wrap{display:flex;flex-direction:column;align-items:center;gap:.3rem}
.btn-wrap span{font-size:.8rem;font-weight:700}
.deck-btns{gap:2.5rem}

.card .brand,.pick .brand{font-size:.85rem;font-weight:800;letter-spacing:.12em;color:var(--ink)}

.picks-intro{margin:-.25rem 0 1rem;font-size:.95rem}
.signup{background:var(--ink);color:var(--white);border-top:5px solid var(--blue);padding:1rem 1rem 1.1rem;margin:0 0 1rem}
.signup-h{margin:0 0 .7rem;font-size:1.05rem;font-weight:700;line-height:1.3}
.signup form{display:flex;gap:.5rem}
.signup input[type=email]{flex:1;min-width:0;min-height:48px;border:2px solid var(--white);padding:0 .8rem;font:1rem var(--font);border-radius:0}
.signup input.bad{outline:3px solid var(--blue)}
.signup .go{width:auto;flex:none;padding:0 1.1rem;background:var(--blue);color:var(--ink)}
.signup .go:hover{background:var(--white)}
.signup-fine{margin:.55rem 0 0;font-size:.72rem;color:rgba(255,255,255,.72)}
.signup-done{margin:0;font-weight:700;color:var(--blue)}
.match .sale-link{color:var(--blue);font-weight:700}
/* once started: logo left, Start again right, so they never overlap */
body.started .bar{justify-content:flex-start}
body.started .bar .logo img{width:clamp(150px,42vw,260px)}
@media(max-height:900px){
  .card .img{height:120px}
  .deck{height:292px}
  .match{padding:.8rem .95rem .9rem}
  .match h2{font-size:1.45rem;margin-bottom:.35rem}
  .match p{font-size:.86rem;margin-top:.2rem}
  .how-to{font-size:.84rem;padding:.5rem .75rem}
  .btn-wrap span{font-size:.75rem}
  .deck-btns{padding-top:.5rem}
}
.signup-h{text-transform:uppercase;letter-spacing:.02em}

/* start screen photo (Nick, 22 Oct): the photo shrinks to whatever room is left, so the whole start screen,
   down to the Google reviews line, fits on one screen on phones and laptops */
body:not(.started){height:100vh;height:100dvh}
body:not(.started) main,.intro{min-height:0}
.intro{justify-content:flex-start}
.intro>:first-child{margin-top:auto}            /* centred when there's room, never cut off at the top when there isn't */
.intro>:last-child{margin-bottom:auto}
.fit-hero{flex:0 1 auto;min-height:0;display:flex;flex-direction:column;width:100%;margin:0 auto 1.1rem}
.fit-hero img{flex:0 1 auto;min-height:0;width:100%;height:auto;max-height:345px;object-fit:contain;mix-blend-mode:multiply}
@media (max-height:860px){   /* shorter screens: tighter text so the photo keeps a decent size */
  .intro{padding-top:1rem;padding-bottom:1rem}
  .intro h1{font-size:clamp(1.9rem,min(1.9rem + 3.6vw,6.4vh),3.6rem);margin-bottom:.5rem}
  .fit-hero{margin-bottom:.7rem}
  .intro .sub2{margin-bottom:1rem}
  .intro .go{min-height:50px}
  .intro .trust{margin-top:.75rem;max-width:none}
}
@media (max-height:520px){ .fit-hero{display:none} }   /* phone on its side: no room for the photo */

/* start screen copy (Nick, 22 Oct): longer headline, three black ticks, three review lines with yellow stars */
.intro h1{font-size:clamp(1.75rem,1.15rem + 3.1vw,2.7rem);line-height:1.08}
.ticks{list-style:none;margin:0 auto .9rem;padding:0;text-align:left;width:fit-content}
.ticks li{display:flex;align-items:center;gap:.55rem;padding:.12rem 0;font-size:1.1rem;font-weight:700}
.ticks li::before{content:"";flex:none;width:1.15em;height:1.15em;background:no-repeat center/contain
  url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M3.5 12.5l5.5 5.5L20.5 6' fill='none' stroke='%23000' stroke-width='4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")}
.intro .sub2{max-width:30ch;margin-bottom:1.5rem}
.intro .trust{max-width:none;line-height:1.45}
.intro .trust>span{display:block}
.stars{color:#FBBC04;letter-spacing:.06em}
@media (max-height:860px){
  .intro h1{font-size:clamp(1.6rem,min(1.15rem + 3.1vw,5vh),2.7rem)}
  .ticks{margin-bottom:.6rem}
  .ticks li{font-size:1rem;padding:.05rem 0}
  .intro .sub2{margin-bottom:.9rem}
}
@media (max-height:620px){   /* the smallest iPhones: a little tighter again so the photo isn't a thumbnail */
  .intro{padding-top:.75rem;padding-bottom:.75rem}
  .intro h1{font-size:1.5rem;margin-bottom:.4rem}
  .fit-hero{margin-bottom:.5rem}
  .ticks{margin-bottom:.45rem}
  .ticks li{font-size:.95rem;padding:0}
  .intro .sub2{font-size:.95rem;margin-bottom:.7rem}
  .intro .go{min-height:46px}
  .intro .trust{margin-top:.6rem;font-size:.75rem;line-height:1.35}
}

.intro .sub2{font-weight:700}   /* "We have made it easy." in bold (Nick, 22 Oct) */

/* 2026 brand (Nick, 22 Oct): Surf Teal top bar (#00B0B9, from the Underground web design system) and the approved
   2026 horizontal logo in white (Underground_2026_Digital_Logo_Suite, 03_Horizontal, white vector). */
:root{--teal:#00B0B9}
.bar{background:var(--teal);padding-top:max(.75rem,env(safe-area-inset-top));padding-bottom:calc(.75rem + 4px)}
.bar .logo img{width:clamp(200px,58vw,320px)}
body.started .bar .logo img{width:clamp(150px,42vw,260px)}
.restart-top:hover{background:var(--white);border-color:var(--white);color:var(--ink)}
@media(max-width:400px){body.started .bar .logo img{width:160px}}
@media (max-height:520px){ .bar .logo img{width:200px} }   /* phone on its side: smaller logo so the start screen still fits */

/* height and weight with unit toggles (Nick, 22 Oct): cm or ft in, kg or lbs */
.nums .num{background:var(--white);padding:.75rem 1rem;min-width:0}
.nums label.lab{display:inline;background:none;padding:0;font-size:.75rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.num-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.35rem .5rem}
.seg{display:inline-flex;border:1.5px solid var(--ink);border-radius:999px;overflow:hidden;flex:none}
.seg button{border:0;background:none;padding:0 .7rem;min-height:32px;font-size:.8rem;font-weight:700;color:var(--ink);white-space:nowrap}
.seg button.on{background:var(--ink);color:var(--white)}
.seg button:not(.on):hover{background:var(--blue)}
.nums .val{display:flex;align-items:baseline;gap:.35rem;margin-top:.45rem;font-size:1rem;color:var(--ink)}
.nums .val[hidden]{display:none}
.nums .val span{display:inline}
.nums input.ft{flex:0 0 1.35em;text-align:center}
.nums input.in{flex:0 0 1.9em;text-align:center}

/* sign-up: typo check and "check your other folders" line (Nick, 22 Oct) */
#perk-form[hidden]{display:none}
.signup-suggest{margin:.6rem 0 0;font-size:.88rem;color:var(--white)}
.signup-suggest b{color:var(--blue)}
.signup-suggest button{display:inline-block;margin:.45rem .4rem 0 0;padding:.35rem .8rem;min-height:36px;border:1.5px solid var(--blue);border-radius:999px;
  background:none;color:var(--blue);font-weight:700;font-size:.8rem}
.signup-suggest button[data-fix]{background:var(--blue);color:var(--ink)}
.signup-check{display:block;margin-top:.45rem;font-weight:400;font-size:.8rem;color:rgba(255,255,255,.8)}

/* tall/short size letters note in the match box (Nick, 22 Oct) */
.match .size-note{font-size:.84rem;opacity:.9}

.signup-privacy{margin-top:.3rem;font-style:italic}

/* footer on every page except the first (Nick, 22 Oct) */
.site-foot{width:min(100% - 2rem,var(--max));margin:0 auto;padding:1.4rem 0 calc(1.75rem + env(safe-area-inset-bottom));text-align:center;border-top:1px solid var(--line)}
body:not(.started) .site-foot{display:none}
.site-foot .foot-trust{margin:0 auto;max-width:none;font-size:.8rem;line-height:1.45;color:var(--ink)}
.site-foot .foot-trust>span{display:block}
.store-link{display:inline-block;margin-top:.55rem;font-size:.8rem;font-weight:700;color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.store-link:hover{color:var(--teal)}
.review{margin:0 auto 1rem;max-width:30rem}
.review[hidden]{display:none}
.review .stars{display:block;font-size:1.05rem;margin-bottom:.3rem}
.review blockquote{margin:0;font-size:.95rem;line-height:1.5;font-style:italic}
.review figcaption{margin-top:.35rem;font-size:.78rem;color:var(--muted)}

/* Your match page (Nick, 22 Oct): short heading on top, the card fills the rest of a phone screen with a big photo,
   details below the Like / Don't like buttons */
.match{padding:.8rem 1rem .85rem;margin-bottom:.6rem}
.match h2{margin:.15rem 0 0;font-size:clamp(1.25rem,1.1rem + .9vw,1.6rem);line-height:1.1}
.match-more{margin:1rem 0 0}
.match-more p:first-child{margin-top:0}
.how-to{border-left:0;text-align:center;padding:.5rem .75rem;margin:0 0 .6rem}
.how-to p{margin:0;line-height:1.5}
.how-to .how-sub{font-size:.8rem;color:var(--muted)}
.how-to .i-yes,.how-to .i-no{vertical-align:-.3em;margin:0 .1rem}
.deck{height:clamp(330px,calc(100dvh - 300px),480px)}
.card .img{height:auto;flex:1 1 auto;min-height:0;padding:.5rem}
.card .img img{width:auto;height:100%;max-width:100%}

/* tap a photo to see it big, without leaving the page */
.zoom{width:min(100vw,40rem);height:min(100dvh,52rem);max-width:100vw;max-height:100dvh;margin:auto;padding:0;border:0;background:var(--white)}
.zoom::backdrop{background:rgba(0,0,0,.75)}
.zoom img{display:block;width:100%;height:100%;object-fit:contain;padding:1rem}
.zoom-x{position:absolute;top:max(.6rem,env(safe-area-inset-top));right:.6rem;width:44px;height:44px;display:grid;place-items:center;
  background:var(--ink);color:var(--white);border-radius:50%;font-size:1.1rem;font-weight:700;pointer-events:none}
.pick .pimg{border:0;padding:0;cursor:zoom-in}
.card .img{cursor:zoom-in}
.results{padding-top:.6rem}
.results .brands{padding-bottom:.45rem}
.results .brands button{min-height:34px;padding:0 .8rem}
.how-to{padding:.35rem .6rem;margin-bottom:.45rem;font-size:.86rem}
.match .k{font-size:.68rem}
.results .brands{margin-top:.9rem}   /* brand filter sits below the Like / Don't like buttons */
.review blockquote{white-space:pre-line}   /* keep the reviewers' own line breaks */