/* AstroSight. Night-sky ground, starlight text, and two accents from the Hubble palette:
   OIII teal = smart telescopes, H-alpha rose = traditional rigs. */
:root{
  --ink:#06080F; --deep:#0D111C; --lift:#151B2A; --line:#222A3B; --line2:#344059;
  --text:#F3F1EC; --dim:#A6ADBE; --faint:#737C90;
  --oiii:#4FD1C5; --oiii-d:#17494A; --ha:#FF7A8C; --ha-d:#4E1E29;
  --good:#7FD99A; --ok:#F2C46B; --bad:#FF8A7A;
  --r:16px;
  color-scheme:dark;
}
body.nv{
  --ink:#120303; --deep:#1A0606; --lift:#240909; --line:#3A1010; --line2:#5A1A16;
  --text:#FF6B57; --dim:#C4503F; --faint:#8F3527;
  --oiii:#FF6B57; --oiii-d:#4A1510; --ha:#FF6B57; --ha-d:#4A1510;
  --good:#FF6B57; --ok:#E55A45; --bad:#FF6B57;
}
*{box-sizing:border-box; margin:0}
[hidden]{display:none!important}
html{background:var(--ink)}
body{background:var(--ink); color:var(--text); font:17px/1.55 "Atkinson Hyperlegible Next",system-ui,-apple-system,"Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased; padding-bottom:40px}
a{color:inherit}
button{font:inherit; color:inherit; background:none; border:0; cursor:pointer; text-align:inherit}
button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--text); outline-offset:3px; border-radius:6px}
.wrap{max-width:760px; margin:0 auto; padding:0 20px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header: the sky moving, before anything else ---------- */
.hero{position:relative; overflow:hidden; min-height:260px; background:#03050b; border-bottom:1px solid var(--line)}
#sky{position:absolute; inset:0; width:100%; height:100%; display:block}
.hero::after{content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(3,5,11,.55),rgba(3,5,11,0) 40%,rgba(3,5,11,.7)); pointer-events:none}
.herorow,.herocopy{position:relative; z-index:1}
.herorow{display:flex; align-items:center; gap:14px; padding-top:18px}
.brand{font-weight:800; font-size:22px; letter-spacing:-.02em; text-decoration:none}
.brand span{color:var(--oiii)}
body.nv .brand span{color:var(--text)}
.hnav{margin-left:auto; display:flex; gap:18px; font-size:15px}
.hnav a{color:var(--dim); text-decoration:none}
.hnav a:hover{color:var(--text)}
.iconbtn{display:inline-flex; align-items:center; gap:7px; font-size:14px; color:var(--dim); padding:7px 12px; border-radius:999px; background:rgba(255,255,255,.06)}
.hnav+.iconbtn{margin-left:4px}
.herorow>.brand+.iconbtn{margin-left:auto}
.iconbtn[aria-pressed="true"]{color:var(--text); background:var(--ha-d)}
.herocopy{padding:52px 20px 34px}
.herocopy h1{font-size:clamp(30px,6vw,46px); line-height:1.08; font-weight:800; letter-spacing:-.025em; max-width:15ch; text-wrap:balance}
.herocopy p{margin-top:12px; color:var(--dim); font-size:18px; max-width:40ch}

/* ---------- the three steps, joined like a constellation ---------- */
.steps{list-style:none; padding:0; position:relative; counter-reset:step}
.steps::before{content:""; position:absolute; left:15px; top:70px; bottom:60px; width:2px; background:linear-gradient(var(--line2),var(--line) 70%,transparent)}
.step{position:relative; padding:44px 0 6px 50px; counter-increment:step}
.step::before{content:counter(step); position:absolute; left:0; top:44px; width:32px; height:32px; border-radius:50%;
  background:var(--ink); border:2px solid var(--line2); display:grid; place-items:center; font-weight:800; font-size:15px; color:var(--dim)}
.step.done::before{background:var(--text); border-color:var(--text); color:var(--ink); box-shadow:0 0 0 5px rgba(243,241,236,.08)}
.step h2{font-size:clamp(23px,4.2vw,30px); line-height:1.15; font-weight:800; letter-spacing:-.02em; text-wrap:balance}
.lead{color:var(--dim); margin-top:6px}
.hint{color:var(--dim); font-size:14px; margin-top:10px; line-height:1.5}
.hint a,.linkbtn{color:var(--text); text-decoration:underline; text-underline-offset:3px; text-decoration-color:var(--line2)}
.geomsg{color:var(--ok)}

/* ---------- target tiles ---------- */
.grp{font-size:14px; font-weight:600; color:var(--faint); margin:26px 0 10px}
.tgrid{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
@media(min-width:620px){.tgrid{grid-template-columns:repeat(3,1fr)}}
.tile{position:relative; display:block; border-radius:var(--r); background:var(--deep); padding:6px 6px 12px; transition:background .15s, transform .15s}
.tile:hover{background:var(--lift)}
.tile .ph{position:relative; display:block; aspect-ratio:3/2; border-radius:11px; overflow:hidden; background:#000}
.tile .ph canvas,.tile .ph img{display:block; width:100%; height:100%; object-fit:cover; transition:filter .2s}
.tile:not(.on) .ph canvas{filter:saturate(.75) brightness(.8)}
.tile:hover .ph canvas{filter:none}
.tile .ph::after{content:""; position:absolute; top:8px; right:8px; width:24px; height:24px; border-radius:50%;
  border:2px solid rgba(243,241,236,.8); background:rgba(6,8,15,.35); box-sizing:border-box}
.tile.on{background:var(--lift); box-shadow:inset 0 0 0 2px var(--text)}
.tile.on .ph::after{content:"✓"; background:var(--text); border-color:var(--text); color:var(--ink); font:800 13px/20px "Atkinson Hyperlegible Next",system-ui,sans-serif; text-align:center}
.tname{display:block; font-weight:600; font-size:16px; margin:10px 6px 0; line-height:1.25}
.tcap{display:block; color:var(--faint); font-size:13px; margin:3px 6px 0; line-height:1.35}
body.nv .tile .ph canvas,body.nv .tile .ph img{filter:grayscale(1) sepia(1) hue-rotate(-45deg) saturate(4) brightness(.55)}

/* ---------- step 2 controls ---------- */
.field{margin-top:22px}
.flabel{display:flex; align-items:baseline; gap:10px; font-weight:600; font-size:16px; margin-bottom:10px}
.flabel output{margin-left:auto; font-size:24px; font-weight:800; font-variant-numeric:tabular-nums; letter-spacing:-.01em}
.skies{display:grid; grid-template-columns:repeat(4,1fr); gap:8px}
@media(max-width:560px){.skies{grid-template-columns:repeat(2,1fr)}}
.sky{border-radius:14px; background:var(--deep); padding:6px 6px 10px; text-align:left}
.sky:hover{background:var(--lift)}
.sky.on{background:var(--lift); box-shadow:inset 0 0 0 2px var(--text)}
.skyart{display:block; height:46px; border-radius:9px; background-color:#05070e; position:relative; overflow:hidden}
.skyart::before{content:""; position:absolute; inset:0; background-image:radial-gradient(1.2px 1.2px at 12% 30%,#fff 50%,transparent 60%),radial-gradient(1px 1px at 30% 62%,#fff 50%,transparent 60%),radial-gradient(1.4px 1.4px at 48% 22%,#fff 50%,transparent 60%),radial-gradient(1px 1px at 66% 48%,#fff 50%,transparent 60%),radial-gradient(1.2px 1.2px at 84% 26%,#fff 50%,transparent 60%),radial-gradient(1px 1px at 22% 12%,#fff 50%,transparent 60%),radial-gradient(1px 1px at 58% 74%,#fff 50%,transparent 60%),radial-gradient(1px 1px at 92% 64%,#fff 50%,transparent 60%),radial-gradient(1px 1px at 40% 42%,#fff 50%,transparent 60%),radial-gradient(1px 1px at 76% 12%,#fff 50%,transparent 60%)}
.skyart::after{content:""; position:absolute; inset:0; background:linear-gradient(0deg,rgba(255,170,90,var(--glow)) 0%,rgba(255,170,90,0) 85%)}
.sky:nth-child(1) .skyart{--glow:0}
.sky:nth-child(2) .skyart{--glow:.25}
.sky:nth-child(2) .skyart::before{opacity:.7}
.sky:nth-child(3) .skyart{--glow:.5}
.sky:nth-child(3) .skyart::before{opacity:.4}
.sky:nth-child(4) .skyart{--glow:.8}
.sky:nth-child(4) .skyart::before{opacity:.15}
.skyname{display:block; font-weight:600; font-size:14px; margin:8px 4px 0; line-height:1.25}
.skysub{display:block; color:var(--faint); font-size:12px; margin:2px 4px 0}
input[type=range]{width:100%; accent-color:var(--text); height:28px}
.more{margin-top:22px; border-top:1px solid var(--line); padding-top:14px}
.more>summary{cursor:pointer; color:var(--dim); font-weight:600; list-style:none; display:inline-flex; gap:8px; align-items:center}
.more>summary::before{content:"+"; display:inline-grid; place-items:center; width:22px; height:22px; border-radius:50%; background:var(--deep); color:var(--text); font-weight:800}
.more[open]>summary::before{content:"–"}
.more>summary::-webkit-details-marker{display:none}
.seg{display:flex; flex-wrap:wrap; gap:6px}
.seg button{padding:8px 14px; border-radius:999px; background:var(--deep); color:var(--dim); font-size:14px; font-weight:600}
.seg button:hover{color:var(--text)}
.seg button.on{background:var(--text); color:var(--ink)}
select{background:var(--deep); color:var(--text); border:1px solid var(--line); border-radius:10px; padding:10px 12px; font:inherit; font-size:15px; width:100%}
.ownrow{margin-top:10px}

/* ---------- step 3: choose a path ---------- */
.picks{display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:18px}
@media(max-width:560px){.picks{grid-template-columns:1fr}}
.pick{display:flex; flex-direction:column; gap:6px; border-radius:var(--r); background:var(--deep); padding:18px 18px 16px; position:relative; transition:background .15s, box-shadow .15s}
.pick:hover{background:var(--lift)}
.picon{width:56px; height:42px; fill:none; stroke-width:2.2; stroke-linecap:round; stroke-linejoin:round; margin-bottom:4px}
.pick.smart .picon{stroke:var(--oiii)}
.pick.trad .picon{stroke:var(--ha)}
.ptitle{font-weight:800; font-size:20px; letter-spacing:-.01em}
.pdesc{color:var(--dim); font-size:15px; line-height:1.45}
.ptease{margin-top:auto; padding-top:10px; font-size:14px; color:var(--faint); border-top:1px solid var(--line)}
.ptease b{color:var(--text); font-weight:600}
.pick.smart[aria-pressed="true"]{background:var(--lift); box-shadow:inset 0 0 0 2px var(--oiii)}
.pick.trad[aria-pressed="true"]{background:var(--lift); box-shadow:inset 0 0 0 2px var(--ha)}

/* ---------- results ---------- */
#sOut{scroll-margin-top:16px}
.res{margin-top:40px; --acc:var(--oiii)}
.res.trad{--acc:var(--ha)}
.reshead{display:flex; align-items:baseline; gap:12px; flex-wrap:wrap}
.reshead h2{font-size:clamp(23px,4.2vw,30px); font-weight:800; letter-spacing:-.02em}
.reshead .kick{width:100%; font-size:14px; font-weight:600; color:var(--acc)}
.swap{margin-left:auto; font-size:14px; color:var(--dim); text-decoration:underline; text-underline-offset:3px; text-decoration-color:var(--line2)}
.swap:hover{color:var(--text)}
.card{margin-top:16px; border-radius:20px; background:var(--deep); padding:22px; box-shadow:inset 0 3px 0 var(--acc)}
.ctop{display:flex; gap:16px; align-items:flex-start; flex-wrap:wrap}
.cname{font-size:clamp(22px,4vw,28px); font-weight:800; letter-spacing:-.02em; line-height:1.15}
.cspec{color:var(--dim); font-size:15px; margin-top:4px}
.cprice{margin-left:auto; text-align:right}
.cprice b{display:block; font-size:clamp(26px,5vw,34px); font-weight:800; letter-spacing:-.02em; font-variant-numeric:tabular-nums; line-height:1.1}
.cprice s{color:var(--faint); font-size:14px}
.cprice span{display:block; color:var(--dim); font-size:14px}
.badge{display:inline-block; vertical-align:middle; font-size:12px; font-weight:700; padding:2px 9px; border-radius:999px; background:var(--lift); color:var(--dim); margin-left:6px; letter-spacing:0}
.badge.new{color:var(--oiii)} .badge.pre{color:var(--ok)} .badge.disc{color:var(--bad)}
.chips{list-style:none; padding:0; display:flex; flex-wrap:wrap; gap:6px; margin-top:14px}
.chips li{font-size:13px; padding:4px 10px; border-radius:999px; background:var(--lift); color:var(--dim)}
.note{margin-top:12px; font-size:14px; color:var(--ok)}
.actions{margin-top:18px; display:flex; flex-wrap:wrap; gap:10px; align-items:center}
.btn{display:inline-flex; align-items:center; gap:8px; background:var(--text); color:var(--ink); font-weight:700; text-decoration:none; padding:12px 20px; border-radius:12px; font-size:16px}
.btn:hover{filter:brightness(.92)}
.buy{display:inline-block; font-size:14px; font-weight:600; color:var(--text); text-decoration:underline; text-underline-offset:3px; text-decoration-color:var(--line2); white-space:nowrap}
.buy:hover{text-decoration-color:var(--text)}

/* how well it handles each target */
.fit{list-style:none; padding:0; margin-top:20px; border-top:1px solid var(--line)}
.fit li{display:grid; grid-template-columns:1fr auto; gap:2px 12px; padding:11px 0; border-bottom:1px solid var(--line); align-items:center}
.fn{font-weight:600; font-size:15px}
.fr{display:inline-flex; align-items:center; gap:8px; font-size:14px; font-weight:600}
.meter{display:inline-flex; gap:3px}
.meter i{width:14px; height:6px; border-radius:3px; background:var(--line2)}
.lv3 .meter i{background:var(--good)} .lv3 .fr{color:var(--good)}
.lv2 .meter i:nth-child(-n+2){background:var(--good)} .lv2 .fr{color:var(--good)}
.lv1 .meter i:nth-child(1){background:var(--ok)} .lv1 .fr{color:var(--ok)}
.lv0 .fr{color:var(--bad)}
.fwhy{grid-column:1/-1; color:var(--faint); font-size:13px; line-height:1.4}

/* traditional rig parts */
.parts{list-style:none; padding:0; margin-top:20px; display:grid; gap:10px}
.part{display:grid; grid-template-columns:auto 1fr auto; gap:2px 14px; align-items:center; padding:14px; border-radius:14px; background:var(--lift)}
.prole{grid-row:span 2; width:78px; font-size:12px; font-weight:700; color:var(--acc); text-transform:uppercase; letter-spacing:.06em}
.pname{font-weight:600; font-size:15px; line-height:1.3}
.pprice{text-align:right; font-weight:700; font-variant-numeric:tabular-nums}
.pwhy{color:var(--faint); font-size:13px; line-height:1.35}
.part .buy{justify-self:end}
.extras{margin-top:12px}
.extras>summary{cursor:pointer; font-weight:600; font-size:15px; color:var(--dim); padding:10px 0}
.extras .parts{margin-top:4px}
.extras .part{background:transparent; border:1px solid var(--line); padding:10px 12px; grid-template-columns:1fr auto}
body.nv #sky{filter:grayscale(1) sepia(1) hue-rotate(-45deg) saturate(4) brightness(.6)}
@media(max-width:520px){.prole{width:auto; grid-row:auto; grid-column:1/-1} .part{grid-template-columns:1fr auto}}

/* alternatives + compare table */
.alts{margin-top:22px}
.alts h3,.tips h3{font-size:16px; font-weight:700; color:var(--dim)}
.alt{display:grid; grid-template-columns:1fr auto; gap:2px 12px; padding:13px 0; border-bottom:1px solid var(--line)}
.alt .an{font-weight:600}
.alt .aw{color:var(--faint); font-size:13px}
.alt .ap{text-align:right; font-weight:700; font-variant-numeric:tabular-nums}
.alt .ap s{display:block; color:var(--faint); font-weight:400; font-size:12px}
details.cmp{margin-top:18px}
details.cmp>summary,details.tips>summary,.how>summary,#credits>summary{cursor:pointer; font-weight:600; color:var(--dim); padding:8px 0}
.tscroll{overflow-x:auto; margin-top:8px; border-radius:14px; background:var(--deep)}
table{border-collapse:collapse; width:100%; min-width:640px; font-size:14px}
th{font-size:12px; color:var(--faint); text-align:left; font-weight:600; padding:10px 12px; border-bottom:1px solid var(--line); white-space:nowrap}
td{padding:10px 12px; border-bottom:1px solid var(--line); vertical-align:top}
td.n{text-align:right; white-space:nowrap; font-variant-numeric:tabular-nums}
td .sub{display:block; color:var(--faint); font-size:12px}
tr.over td{opacity:.45}
.dots{display:flex; gap:4px}
.dot{width:10px; height:10px; border-radius:50%; background:var(--line2)}
.dot.hi{background:var(--good)} .dot.mid{background:var(--ok)} .dot.lo{background:var(--bad)}
.legend{padding:10px 12px; color:var(--faint); font-size:12px; display:flex; gap:12px; flex-wrap:wrap; align-items:center}
.legend span{display:inline-flex; gap:5px; align-items:center}

.warn{margin-top:18px; border-radius:14px; padding:14px 16px; background:var(--ha-d); font-size:15px; line-height:1.45}
.warn b{color:var(--ha)}
.empty{margin-top:16px; border-radius:20px; background:var(--deep); padding:26px 22px; color:var(--dim); line-height:1.5}
.empty b{color:var(--text)}
details.tips{margin-top:22px}
.tips ul{padding-left:20px; margin-top:6px; display:grid; gap:8px; color:var(--dim); font-size:15px}
.tips li b{color:var(--text)}

/* ---------- bottom of the page ---------- */
.glist{margin-top:48px}
.glist h2{font-size:22px; font-weight:800; letter-spacing:-.01em}
.glist ul{list-style:none; padding:0; margin-top:14px; display:grid; gap:10px}
@media(min-width:620px){.glist ul{grid-template-columns:1fr 1fr}}
.glist li a{display:block; border-radius:14px; background:var(--deep); padding:14px 16px; text-decoration:none}
.glist li a:hover{background:var(--lift)}
.glist li b{display:block; font-size:15px; line-height:1.3}
.glist li span{display:block; color:var(--faint); font-size:13px; margin-top:4px; line-height:1.4}
.adwrap{margin-top:40px; border-radius:14px; background:var(--deep); padding:10px 12px 12px; min-height:110px}
.adlabel{font-size:11px; color:var(--faint); margin-bottom:6px}
.adph{height:90px; display:grid; place-items:center; border:1px dashed var(--line2); border-radius:10px; color:var(--faint); font-size:13px; font-weight:600}
@media(max-width:560px){.adph{height:100px}}

/* product photos: step-3 backgrounds, result hero, alternative thumbnails */
.pick{isolation:isolate; overflow:hidden}
.pbg{position:absolute; inset:0; z-index:-1}
.pbg img{position:absolute; inset:0; width:100%; height:100%; object-fit:cover; opacity:0; transition:opacity 1.4s ease}
.pbg img.on{opacity:1}
.pick.hasbg{min-height:300px; justify-content:flex-end}
.pick.hasbg .pbg::after{content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(9,12,20,.15) 0%,rgba(9,12,20,.78) 52%,rgba(9,12,20,.96) 100%)}
.pick.hasbg .picon{display:none}
.cimg{margin:-8px -8px 20px; border-radius:14px; overflow:hidden; background:#0a0d16; position:relative}
.cimg img{display:block; width:100%; aspect-ratio:16/9; object-fit:cover}
.cimg.multi{aspect-ratio:16/9}
.cimg.multi img{position:absolute; inset:0; height:100%; opacity:0; transition:opacity 1.2s ease}
.cimg.multi img.on{opacity:1}
.cimg figcaption{z-index:1;position:absolute; right:8px; bottom:8px; font-size:11px; color:rgba(255,255,255,.8); background:rgba(0,0,0,.5); padding:2px 9px; border-radius:999px}
.alt{grid-template-columns:64px 1fr auto; align-items:center; gap:2px 16px}
.athumb{width:64px; height:64px; border-radius:14px; background:var(--lift); border:1px solid var(--line2); overflow:hidden; display:grid; place-items:center}
.athumb img{width:100%; height:100%; object-fit:cover}
.athumb svg{width:34px; height:26px; fill:none; stroke:var(--faint); stroke-width:2.4; stroke-linecap:round; stroke-linejoin:round}
body.nv .pbg img,body.nv .cimg img,body.nv .athumb img{filter:grayscale(1) sepia(1) hue-rotate(-45deg) saturate(4) brightness(.55)}

/* floating music button */
body{padding-bottom:90px}
.musicbtn{position:fixed; right:16px; bottom:16px; z-index:40; width:48px; height:48px; border-radius:50%; display:grid; place-items:center;
  background:rgba(13,17,28,.9); border:1px solid var(--line2); color:var(--dim); box-shadow:0 6px 24px rgba(0,0,0,.45); backdrop-filter:blur(8px)}
.musicbtn:hover{color:var(--text)}
.musicbtn .bars{display:none; gap:3px; align-items:flex-end; height:18px}
.musicbtn.on .bars{display:flex}
.musicbtn.on .mute{display:none}
.bars i{width:3px; height:6px; border-radius:2px; background:var(--oiii); animation:eq 1.2s ease-in-out infinite}
.bars i:nth-child(2){animation-delay:-.4s}
.bars i:nth-child(3){animation-delay:-.8s}
@keyframes eq{0%,100%{height:5px} 50%{height:17px}}
@media(prefers-reduced-motion:reduce){.bars i{animation:none; height:12px}}
.shop{margin-top:48px; border-top:1px solid var(--line); padding-top:24px}
.shop h2{font-size:18px; font-weight:800}
.shopgrid{display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:12px}
@media(max-width:520px){.shopgrid{grid-template-columns:1fr}}
.shopgrid label{display:grid; gap:6px; font-size:14px; color:var(--dim); font-weight:600}
.how{margin-top:24px; color:var(--dim); font-size:15px}
.how p{margin-top:8px; line-height:1.55; max-width:65ch}
.foot{margin-top:28px; padding-top:18px; border-top:1px solid var(--line); color:var(--faint); font-size:13px; line-height:1.6; display:grid; gap:8px}
.foot a{color:var(--dim)}
#creditList{margin-top:6px}
@media(prefers-reduced-motion:reduce){*{transition:none!important; scroll-behavior:auto!important}}
@media(max-width:560px){
  .wrap{padding:0 16px}
  .step{padding-left:44px}
  .steps::before{left:14px}
  .herocopy{padding:40px 16px 28px}
  .hnav{display:none}
}