/* ============================================================
   CardGradeCheck — "display case" aesthetic
   Dark slate case + card-stock panels + slab-label motifs
   Fonts: Big Shoulders Display (display) / Spline Sans (body)
          Spline Sans Mono (data)
   ============================================================ */
:root{
  --ink:#0d1013;
  --ink-2:#14181d;
  --ink-3:#1b2129;
  --line:#28303a;
  --line-soft:#1f252d;
  --bone:#efeadf;
  --bone-dim:#c8c2b4;
  --dim:#95a0ab;
  --red:#e14b3b;
  --red-deep:#b03225;
  --mint:#43d69a;
  --gold:#e8b14e;
  --holo:linear-gradient(100deg,#7bd8ff 0%,#b79cff 30%,#ff9cc1 60%,#ffd79c 100%);
  --card:#f6f2e8;
  --card-ink:#181410;
  --card-dim:#5c564a;
  --card-line:#ddd5c4;
  --display:'Big Shoulders Display',Impact,sans-serif;
  --body:'Spline Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'Spline Sans Mono','SF Mono',Menlo,monospace;
  --maxw:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--bone);
  font-family:var(--body);
  font-size:16.5px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
/* grain overlay */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:999;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}
a{color:inherit}
img{max-width:100%}
::selection{background:var(--red);color:#fff}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
main{display:block}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:50;
  background:rgba(13,16,19,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.site-head .wrap{display:flex;align-items:center;gap:26px;height:62px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand-mark{
  width:30px;height:30px;border-radius:7px;flex:none;
  background:var(--holo);
  display:grid;place-items:center;
  font-family:var(--display);font-weight:900;color:#10131a;font-size:19px;
}
.brand-name{font-family:var(--display);font-weight:800;font-size:21px;letter-spacing:.04em;text-transform:uppercase}
.brand-name em{font-style:normal;color:var(--red)}
nav.main-nav{margin-left:auto;display:flex;gap:4px;flex-wrap:wrap}
nav.main-nav a{
  text-decoration:none;color:var(--dim);font-size:13.5px;font-weight:500;
  padding:7px 11px;border-radius:6px;letter-spacing:.01em;
}
nav.main-nav a:hover{color:var(--bone);background:var(--ink-3)}
nav.main-nav a[aria-current="page"]{color:var(--bone);background:var(--ink-3)}

/* account chip (injected by site.js, lives in .wrap not in nav) */
.nav-auth{
  margin-left:6px;flex:none;font-family:var(--mono);font-size:12.5px;
  color:var(--bone);text-decoration:none;border:1px solid var(--line);
  border-radius:99px;padding:7px 14px;white-space:nowrap;
  max-width:44vw;overflow:hidden;text-overflow:ellipsis;
}
.nav-auth:hover{border-color:var(--red)}

/* hamburger (injected by site.js) */
.nav-toggle{
  display:none;width:40px;height:40px;flex:none;margin-left:4px;padding:0;
  border:1px solid var(--line);border-radius:8px;background:none;cursor:pointer;
  place-items:center;place-content:center;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--bone);margin:2.5px 0;transition:transform .2s,opacity .2s}
.site-head.open .nav-toggle span:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.site-head.open .nav-toggle span:nth-child(2){opacity:0}
.site-head.open .nav-toggle span:nth-child(3){transform:translateY(-4.5px) rotate(-45deg)}

@media(max-width:860px){
  /* no-JS fallback: old wrapping behavior */
  .site-head:not(.js-nav) .wrap{height:auto;padding-top:10px;padding-bottom:10px;flex-wrap:wrap;gap:8px}
  .site-head:not(.js-nav) nav.main-nav{margin-left:0;width:100%}
  /* JS-enhanced: single row = brand | auth chip | hamburger; links in dropdown */
  .site-head.js-nav .wrap{gap:10px}
  .site-head.js-nav .nav-toggle{display:grid}
  .site-head.js-nav .nav-auth{margin-left:auto}
  .site-head.js-nav nav.main-nav{
    position:absolute;top:100%;left:0;right:0;margin:0;
    display:none;flex-direction:column;gap:2px;
    background:var(--ink);
    border-bottom:1px solid var(--line);
    padding:10px 22px 18px;
    box-shadow:0 24px 40px -20px rgba(0,0,0,.7);
  }
  .site-head.open nav.main-nav{display:flex}
  .site-head.js-nav nav.main-nav a{font-size:15px;padding:11px 10px}
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.hero .wrap{position:relative;padding:84px 22px 72px}
.ghost-grade{
  position:absolute;right:-30px;top:-60px;z-index:0;
  font-family:var(--display);font-weight:900;font-size:min(44vw,430px);line-height:1;
  color:transparent;-webkit-text-stroke:1px var(--line);
  user-select:none;pointer-events:none;
}
.hero-inner{position:relative;z-index:1;max-width:720px}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--dim);margin-bottom:22px;
}
.kicker::before{content:"";width:26px;height:2px;background:var(--red)}
h1{
  font-family:var(--display);font-weight:900;text-transform:uppercase;
  font-size:clamp(44px,7.5vw,84px);line-height:.95;letter-spacing:.005em;
  margin-bottom:22px;
}
h1 .holo{
  background:var(--holo);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.lede{font-size:19px;color:var(--bone-dim);max-width:600px;margin-bottom:34px}
.lede strong{color:var(--bone)}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--body);font-weight:600;font-size:15px;
  padding:13px 22px;border-radius:8px;text-decoration:none;cursor:pointer;
  border:1px solid transparent;transition:transform .15s ease,box-shadow .15s ease,background .15s;
}
.btn:active{transform:translateY(1px)}
.btn-red{background:var(--red);color:#fff;box-shadow:0 6px 24px -8px rgba(225,75,59,.55)}
.btn-red:hover{background:var(--red-deep)}
.btn-ghost{border-color:var(--line);color:var(--bone)}
.btn-ghost:hover{background:var(--ink-3)}
.btn-mint{background:var(--mint);color:#0a241a}
.btn-mint:hover{filter:brightness(1.06)}

/* ---------- slab motif ---------- */
.slab{
  background:var(--ink-2);border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.slab-label{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 16px;border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);
  background:linear-gradient(180deg,var(--ink-3),var(--ink-2));
}
.slab-label .tag{color:var(--red)}
.slab-body{padding:22px 22px 24px}

/* paper panels for long-form */
.paper{
  background:var(--card);color:var(--card-ink);
  border-radius:14px;border:1px solid #00000022;
  box-shadow:0 30px 60px -40px rgba(0,0,0,.9);
}
.paper .slab-label{
  background:#eee7d7;border-bottom:1px solid var(--card-line);color:var(--card-dim);
}
.paper h2,.paper h3{color:var(--card-ink)}
.paper p,.paper li{color:#3c372e}
.paper a{color:var(--red-deep)}

/* ---------- sections ---------- */
section{padding:64px 0}
.sec-head{margin-bottom:34px;max-width:720px}
h2{
  font-family:var(--display);font-weight:800;text-transform:uppercase;
  font-size:clamp(28px,4vw,42px);line-height:1.02;margin-bottom:12px;
}
h2 .accent{color:var(--red)}
h3{font-family:var(--display);font-weight:700;text-transform:uppercase;font-size:22px;letter-spacing:.02em;margin:26px 0 10px}
.sub{color:var(--dim);font-size:16px}
p+p{margin-top:14px}

/* grade chips */
.grade-chip{
  display:inline-grid;place-items:center;
  width:52px;height:58px;border-radius:8px;border:1.5px solid var(--line);
  font-family:var(--display);font-weight:900;font-size:26px;background:var(--ink-3);
  position:relative;
}
.grade-chip::before{
  content:"";position:absolute;top:0;left:0;right:0;height:8px;
  border-radius:6px 6px 0 0;background:var(--red);opacity:.85;
}
.grade-chip.g10{color:var(--mint)}.grade-chip.g10::before{background:var(--mint)}
.grade-chip.g9{color:var(--gold)}.grade-chip.g9::before{background:var(--gold)}
.grade-chip.g8{color:var(--bone)}

/* feature grid */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.grid-tool{display:grid;grid-template-columns:1.5fr 1fr;gap:16px;align-items:start}
.grid-2>*,.grid-3>*,.grid-tool>*{min-width:0}
@media(max-width:900px){.grid-3,.grid-2,.grid-tool{grid-template-columns:1fr}}
.feature .slab-body p{color:var(--dim);font-size:15px}
.feature .num{
  font-family:var(--mono);font-size:12px;color:var(--red);letter-spacing:.12em;margin-bottom:8px;display:block;
}
.feature h3{margin-top:0;font-size:20px}
a.card-link{text-decoration:none;display:block;transition:transform .18s ease,border-color .18s}
a.card-link:hover{transform:translateY(-3px)}
a.card-link:hover .slab{border-color:#3a4450}

/* ---------- tables ---------- */
.tbl-scroll{overflow-x:auto;border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:14.5px}
.tbl-scroll table{min-width:560px}
th{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;
  text-align:left;padding:10px 14px;border-bottom:2px solid var(--card-ink);color:var(--card-dim);
}
td{padding:11px 14px;border-bottom:1px solid var(--card-line);vertical-align:top}
tr:last-child td{border-bottom:none}
td.num,th.num{font-family:var(--mono);text-align:right;white-space:nowrap}
.pill{
  display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.06em;
  padding:3px 9px;border-radius:99px;border:1px solid currentColor;white-space:nowrap
}
.pill.red{color:var(--red-deep)}
.pill.mint{color:#0d7d55}
.pill.dim{color:var(--card-dim)}

/* dark tables (tools) */
.slab table th{border-bottom-color:var(--line);color:var(--dim)}
.slab table td{border-bottom-color:var(--line-soft)}

/* ---------- FAQ ---------- */
details.faq{border-bottom:1px solid var(--card-line);padding:4px 0}
details.faq summary{
  cursor:pointer;font-weight:600;font-size:16.5px;padding:14px 0;list-style:none;
  display:flex;justify-content:space-between;gap:16px;align-items:baseline;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-family:var(--mono);color:var(--red);flex:none}
details.faq[open] summary::after{content:"–"}
details.faq div{padding:0 0 16px;color:#3c372e}

/* ---------- forms & tools ---------- */
label.f-label{
  display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--dim);margin:0 0 6px;
}
input[type=text],input[type=email],input[type=number],select{
  width:100%;background:var(--ink);border:1px solid var(--line);border-radius:8px;
  color:var(--bone);font-family:var(--mono);font-size:15px;padding:11px 12px;outline:none;
}
input:focus,select:focus{border-color:var(--red)}
input[type=range]{width:100%;accent-color:var(--red)}
.field{margin-bottom:16px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:640px){.f-row{grid-template-columns:1fr}}
.hint{font-size:12.5px;color:var(--dim);margin-top:5px}

/* stat readouts */
.readout{
  font-family:var(--display);font-weight:900;font-size:44px;line-height:1;
}
.readout small{font-family:var(--mono);font-weight:400;font-size:12px;letter-spacing:.1em;color:var(--dim);display:block;margin-top:6px;text-transform:uppercase}
.good{color:var(--mint)}.warn{color:var(--gold)}.bad{color:var(--red)}

/* verdict banner */
.verdict{
  border-radius:10px;padding:18px 20px;border:1px solid var(--line);
  display:flex;gap:14px;align-items:flex-start;background:var(--ink-3);
}
.verdict .v-icon{font-family:var(--display);font-weight:900;font-size:30px;line-height:1}
.verdict p{font-size:14.5px;color:var(--bone-dim)}

/* waitlist */
.waitlist{display:flex;gap:10px;flex-wrap:wrap}
.waitlist input{flex:1;min-width:220px}

/* footer */
.site-foot{border-top:1px solid var(--line-soft);padding:44px 0 60px;margin-top:30px}
.site-foot .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
@media(max-width:820px){.site-foot .wrap{grid-template-columns:1fr}}
.site-foot h4{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:12px}
.site-foot a{color:var(--bone-dim);text-decoration:none;font-size:14px;display:block;padding:3px 0}
.site-foot a:hover{color:var(--bone)}
.foot-note{font-size:12.5px;color:var(--dim);line-height:1.6;max-width:420px}
.foot-note strong{color:var(--bone-dim)}

/* content article rhythm */
.article{padding:38px clamp(20px,4vw,46px) 46px}
.article > h2:first-child{margin-top:0}
.article ul,.article ol{padding-left:22px;margin:12px 0}
.article li{margin:6px 0}
.article .updated{
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--card-dim);margin-bottom:18px;display:block;
}
.callout{
  border-left:4px solid var(--red);background:#efe6d2;
  padding:14px 18px;border-radius:0 10px 10px 0;margin:18px 0;font-size:15px;color:#3c372e;
}
.callout strong{color:var(--card-ink)}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;align-items:stretch}
@media(max-width:980px){.price-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.price-grid{grid-template-columns:1fr}}
.price-card{display:flex;flex-direction:column}
.price-card .slab-body{display:flex;flex-direction:column;flex:1;gap:0}
.price-card.popular{border-color:var(--mint);box-shadow:0 0 0 1px var(--mint),0 18px 40px -24px rgba(67,214,154,.35)}
.price-big{font-family:var(--display);font-weight:900;font-size:46px;line-height:1;margin:6px 0 2px}
.price-big small{font-family:var(--mono);font-weight:400;font-size:12px;color:var(--dim);letter-spacing:.06em}
.price-per{font-family:var(--mono);font-size:12px;color:var(--dim);margin-bottom:14px}
.price-feats{list-style:none;margin:0 0 18px;padding:0;font-size:14px;color:var(--bone-dim)}
.price-feats li{padding:5px 0 5px 20px;position:relative}
.price-feats li::before{content:"✓";position:absolute;left:0;color:var(--mint);font-weight:700}
.price-feats li.no::before{content:"—";color:var(--dim)}
.price-card .btn{margin-top:auto;justify-content:center}

/* ---------- AI grader ---------- */
.upload-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:14px}
@media(max-width:520px){.upload-grid{grid-template-columns:1fr}}
.upbox{
  position:relative;border:1.5px dashed var(--line);border-radius:10px;
  min-height:150px;display:grid;place-items:center;text-align:center;
  cursor:pointer;transition:border-color .15s;overflow:hidden;background:var(--ink);
}
.upbox:hover{border-color:var(--red)}
.upbox.filled{border-style:solid;border-color:var(--mint)}
.upbox input{position:absolute;inset:0;opacity:0;cursor:pointer}
.upbox .ub-hint{padding:16px;color:var(--dim);font-size:13.5px;pointer-events:none}
.upbox .ub-hint strong{display:block;color:var(--bone);font-size:14.5px;margin-bottom:4px}
.upbox img.preview{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.9}
.upbox .ub-badge{
  position:absolute;top:8px;left:8px;z-index:2;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.1em;text-transform:uppercase;background:rgba(13,16,19,.85);
  border:1px solid var(--line);border-radius:5px;padding:3px 8px;color:var(--bone-dim);pointer-events:none;
}
.status-line{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:13px;color:var(--dim);min-height:24px}
.spinner{
  width:16px;height:16px;flex:none;border-radius:50%;
  border:2px solid var(--line);border-top-color:var(--red);
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.result-final{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:6px}
.result-final .big{
  font-family:var(--display);font-weight:900;font-size:76px;line-height:1;
  background:var(--holo);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.result-final .cond{font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--bone-dim)}
.range-note{font-family:var(--mono);font-size:12.5px;color:var(--dim);margin-bottom:16px}
.sub-chips{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px}
@media(max-width:520px){.sub-chips{grid-template-columns:repeat(2,1fr)}}
.sub-chip{border:1px solid var(--line);border-radius:9px;padding:10px 8px;text-align:center;background:var(--ink)}
.sub-chip .v{font-family:var(--display);font-weight:800;font-size:26px;line-height:1}
.sub-chip .k{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);margin-top:4px}
.result-img{border-radius:10px;border:1px solid var(--line);max-height:340px;object-fit:contain;background:#0a0c0f}
.err-box{
  border:1px solid var(--red);border-radius:9px;padding:12px 14px;color:var(--bone-dim);
  font-size:14px;background:rgba(225,75,59,.08);
}

/* reveal animation */
@media(prefers-reduced-motion:no-preference){
  .rise{opacity:0;transform:translateY(14px);animation:rise .7s cubic-bezier(.2,.7,.2,1) forwards}
  .rise.d1{animation-delay:.08s}.rise.d2{animation-delay:.16s}.rise.d3{animation-delay:.24s}
  @keyframes rise{to{opacity:1;transform:none}}
}

/* canvas tool */
.stage-wrap{position:relative;background:#0a0c0f;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
#stage{display:block;width:100%;touch-action:none;cursor:grab}
.drop-note{
  position:absolute;inset:0;display:grid;place-items:center;text-align:center;
  color:var(--bone);font-size:15px;padding:30px;pointer-events:none;
  background:rgba(13,16,19,.75);
}
.drop-note[hidden]{display:none}
.legend{display:flex;gap:18px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;color:var(--dim);margin-top:10px}
.legend .sw{display:inline-block;width:14px;height:3px;vertical-align:middle;margin-right:6px}