/* Layout: single-column order form — invite hero, three numbered steps, sticky total bar; checkout replaces the form on submit */
:root{
  --bg:#f5f3ee;--card:#ffffff;--ink:#1b2333;--muted:#5f6878;--line:#e2e1dc;--field:#ffffff;--field-line:#cbcfd6;
  --brand:#1f3a5f;--brand-soft:#e7edf5;--on-brand:#ffffff;--gold:#a87a22;--gold-soft:#f4e6c7;
  --ok:#157f3b;--ok-bg:#ecfdf3;--ok-line:#abefc6;--bad:#b42318;--bad-bg:#fef3f2;--bad-line:#fecdca;
  --cover-a:#1f3a5f;--cover-b:#0f2036;--shadow:rgba(16,24,40,.07);
  --f-display:"Literata",Georgia,"Times New Roman",serif;
  --f-body:"Figtree",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#10151f;--card:#171e2b;--ink:#e8ebf1;--muted:#9aa3b2;--line:#273042;--field:#121927;--field-line:#344057;
  --brand:#8fb3e0;--brand-soft:#1e2c42;--on-brand:#0d1626;--gold:#d9ab55;--gold-soft:#3a2f1a;
  --ok:#6fd497;--ok-bg:#12291d;--ok-line:#1f4a31;--bad:#f59a8f;--bad-bg:#2d1615;--bad-line:#5a2723;
  --cover-a:#24426b;--cover-b:#0b1626;--shadow:rgba(0,0,0,.35);color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#10151f;--card:#171e2b;--ink:#e8ebf1;--muted:#9aa3b2;--line:#273042;--field:#121927;--field-line:#344057;
  --brand:#8fb3e0;--brand-soft:#1e2c42;--on-brand:#0d1626;--gold:#d9ab55;--gold-soft:#3a2f1a;
  --ok:#6fd497;--ok-bg:#12291d;--ok-line:#1f4a31;--bad:#f59a8f;--bad-bg:#2d1615;--bad-line:#5a2723;
  --cover-a:#24426b;--cover-b:#0b1626;--shadow:rgba(0,0,0,.35);color-scheme:dark}

*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;font:16px/1.55 var(--f-body);color:var(--ink);background:var(--bg);padding-bottom:110px}
.wrap{max-width:960px;margin:0 auto;padding-inline:16px}
h1,h2,h3{font-family:var(--f-display);line-height:1.2;margin:0;text-wrap:balance}
.hero{background:var(--cover-a);background:linear-gradient(150deg,var(--cover-a),var(--cover-b));color:#fff;padding-block:40px 34px;margin-bottom:20px}
.hero h1{font-size:clamp(1.6rem,4.2vw,2.4rem);font-weight:700;max-width:22ch}
.hero p{margin:.6em 0 0;opacity:.88;max-width:58ch}
.eyebrow{font:700 .74rem/1 var(--f-body);text-transform:uppercase;letter-spacing:.1em;color:var(--gold);margin:0 0 .7em}
.hero .eyebrow{color:#e8c47e}
.date{display:inline-flex;gap:.5em;margin-top:14px;padding:6px 12px;border:1px solid rgba(255,255,255,.28);border-radius:99px;font-size:.85rem}
.demo{background:var(--gold-soft);color:var(--ink);border-radius:10px;padding:10px 14px;font-size:.88rem;margin-bottom:16px}
main{display:flex;flex-direction:column;gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:0 1px 2px var(--shadow)}
.card>h2{font-size:1.2rem;display:flex;gap:.6em;align-items:center;margin-bottom:14px}
.num{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--brand);color:var(--on-brand);font:700 .85rem var(--f-body)}
.muted{color:var(--muted);margin:0 0 14px;font-size:.93rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px}
label.f{display:flex;flex-direction:column;gap:5px;font-size:.88rem;font-weight:600}
input[type=text],input[type=email],input[type=tel]{width:100%;padding:11px 12px;border:1px solid var(--field-line);border-radius:10px;font:inherit;font-weight:400;background:var(--field);color:var(--ink)}
input:focus-visible,button:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.req{color:var(--bad);font-weight:500;font-size:.78rem}
.switch{display:flex;gap:10px;align-items:center;font-weight:600;margin-bottom:14px;cursor:pointer}
.switch input{width:18px;height:18px;accent-color:var(--brand)}
.books{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,330px),1fr));gap:12px}
.book{border:1px solid var(--line);border-radius:12px;overflow:hidden;display:grid;grid-template-columns:118px minmax(0,1fr);background:var(--bg);transition:border-color .15s,box-shadow .15s}
.book.on{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand) inset}
.shelf{background:radial-gradient(130% 80% at 40% 30%,var(--card),var(--bg));padding:14px 8px 10px 12px;display:flex;align-items:center;justify-content:center}
.shelf img{display:block;width:100%;height:auto;filter:drop-shadow(0 6px 8px var(--shadow))}
@media (prefers-reduced-motion:no-preference){.shelf img{transition:transform .25s ease}.book:hover .shelf img{transform:translateY(-3px) rotate(-1.5deg)}}
.ph{width:80%;aspect-ratio:2/3;border-radius:2px 5px 5px 2px;background:linear-gradient(160deg,var(--cover-a),var(--cover-b));color:#f4e6c7;display:flex;flex-direction:column;justify-content:flex-end;padding:8px;box-shadow:-5px 0 0 -1px var(--cover-b),0 8px 14px var(--shadow)}
.ph b{font:700 .78rem/1.2 var(--f-display)}.ph small{opacity:.75;font-size:.62rem;margin-top:3px}
.book-info .sub{color:var(--muted);font-size:.8rem;line-height:1.4;margin:-4px 0 0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.hero-inner{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;align-items:center}
.hero-books{display:flex;justify-content:center;align-items:flex-end;min-width:0;max-width:460px;margin-inline:auto;width:100%}
.hero-books img{width:27%;height:auto;margin-inline:-2.5%;filter:drop-shadow(0 10px 16px rgba(0,0,0,.45));position:relative}
.hero-books img:nth-child(2),.hero-books img:nth-child(3){width:30%;z-index:1}
@media (min-width:760px){.hero-inner{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}}
.inviter{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:10px 16px 10px 10px;width:fit-content;max-width:100%;margin-bottom:18px}
.avatar{flex:0 0 46px;height:46px;border-radius:50%;display:grid;place-items:center;background:#e8c47e;color:#1b2333;font:700 1.05rem var(--f-display)}
.inviter small{display:block;font-size:.72rem;letter-spacing:.09em;text-transform:uppercase;color:#e8c47e;font-weight:700}
.inviter strong{display:block;font:600 1.1rem/1.25 var(--f-display);color:#fff}
.inviter span{font-size:.85rem;opacity:.85}
.cover{aspect-ratio:3/3.4;max-width:100%;display:flex;flex-direction:column;justify-content:flex-end;padding:14px;color:#f4e6c7;position:relative;overflow:hidden}
.cover::before{content:"";position:absolute;inset:10px;border:1px solid rgba(244,230,199,.35);border-radius:4px}
.cover b{font:700 1.05rem/1.2 var(--f-display);position:relative}
.cover small{opacity:.75;font-size:.75rem;position:relative;margin-top:4px}
.book-info{padding:12px 12px 12px 4px;display:flex;flex-direction:column;gap:8px;flex:1}
.book-info h3{font-size:.98rem}
.book-info .by{color:var(--muted);font-size:.83rem;margin:-4px 0 0}
.chips{display:grid;grid-template-columns:1fr;gap:6px;margin-top:auto}
.chip{position:relative}
.chip input{position:absolute;opacity:0;pointer-events:none}
.chip span{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 10px;border:1.5px solid var(--field-line);border-radius:9px;font-size:.86rem;font-weight:500;cursor:pointer;background:var(--card);font-variant-numeric:tabular-nums}
.chip input:checked+span{border-color:var(--brand);background:var(--brand-soft);color:var(--brand)}
.chip i{font-style:normal;white-space:nowrap}.chip b.free{color:var(--ok)}.chip b{white-space:nowrap}.chip input:checked+span i::before{content:"✓ ";font-weight:700}
.chip input:focus-visible+span{outline:2px solid var(--gold);outline-offset:2px}
.people{display:flex;flex-direction:column;gap:12px;margin-bottom:12px}
.person{border:1.5px dashed var(--field-line);border-radius:12px;padding:14px;display:flex;flex-direction:column;gap:12px}
.person-head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.person-head strong{font-family:var(--f-display);font-size:1.02rem}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:.4em;background:var(--brand);color:var(--on-brand);border:0;border-radius:10px;padding:12px 20px;font:600 1rem var(--f-body);cursor:pointer}
.btn.ghost{background:transparent;color:var(--brand);border:1.5px solid var(--brand)}
.btn.full{width:100%}
.link{background:none;border:0;color:var(--bad);cursor:pointer;font:500 .9rem var(--f-body);padding:4px}
.radios{display:flex;flex-wrap:wrap;gap:10px 20px;margin-bottom:12px}
.radios label{display:flex;gap:8px;align-items:center;cursor:pointer}
.radios input{accent-color:var(--brand);width:17px;height:17px}
.alert{background:var(--bad-bg);border:1px solid var(--bad-line);color:var(--bad);border-radius:10px;padding:12px 16px}
.alert ul{margin:.3em 0 0;padding-left:1.2em}
.note{background:var(--ok-bg);border:1px solid var(--ok-line);color:var(--ok);border-radius:10px;padding:12px 16px}
.bar{position:fixed;left:0;right:0;bottom:0;background:var(--card);border-top:1px solid var(--line);box-shadow:0 -6px 18px var(--shadow);padding-bottom:env(safe-area-inset-bottom,0px);z-index:5}
.bar-inner{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-block:12px}
.bar small{display:block;color:var(--muted);font-size:.82rem}
.bar strong{font:700 1.35rem var(--f-display);font-variant-numeric:tabular-nums}
.narrow{max-width:560px;margin:24px auto 0}
.sum{display:flex;flex-direction:column}
.sum-person{border-top:1px solid var(--line);padding-block:12px}
.sum-person h3{font-size:1rem}
.sum-person .em{color:var(--muted);font-size:.84rem;margin:2px 0 6px;overflow-wrap:anywhere}
.line{display:flex;justify-content:space-between;gap:12px;font-size:.94rem;padding-block:2px;font-variant-numeric:tabular-nums}
.line.total{border-top:2px solid var(--ink);margin-top:8px;padding-top:10px;font-weight:700;font-size:1.1rem}
.co{display:flex;flex-direction:column;gap:12px;margin-top:16px}
.co h1{font-size:1.6rem;margin-bottom:6px}
.paid-badge{display:inline-block;background:var(--ok-bg);color:var(--ok);border:1px solid var(--ok-line);border-radius:99px;padding:3px 10px;font-size:.8rem;font-weight:600}
@media (prefers-reduced-motion:no-preference){.chip span,.btn{transition:background .15s,border-color .15s}}
/* shared with the PHP pages */
.wrap>main,main.wrap{display:flex;flex-direction:column;gap:16px}
label:not(.chip):not(.switch):not(.f){display:flex;flex-direction:column;gap:5px;font-size:.88rem;font-weight:600}
input:not([type]),input[type=password],input[type=datetime-local]{width:100%;padding:11px 12px;border:1px solid var(--field-line);border-radius:10px;font:inherit;font-weight:400;background:var(--field);color:var(--ink)}
.sum-person .muted{margin:0 0 .4em;font-size:.85rem}
.admin-top{display:flex;justify-content:space-between;align-items:center;padding-top:24px}
.table{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.9rem}
th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line);white-space:nowrap}tr.off{opacity:.45}
.copy{min-width:260px;font-size:.8rem!important;padding:6px 8px!important}
.tag{padding:2px 8px;border-radius:99px;font-size:.78rem;background:var(--brand-soft)}.tag.paid{background:var(--ok-bg);color:var(--ok)}.tag.failed{background:var(--bad-bg);color:var(--bad)}

form#f{display:flex;flex-direction:column;gap:16px}
.share-form{align-items:end}
.share-link{display:flex;gap:8px;flex-wrap:wrap}
.share-link input{flex:1 1 220px;min-width:0;font-variant-numeric:tabular-nums}
.btn.wa{background:#1f8f4e;color:#fff}
.share-actions{display:flex;flex-wrap:wrap;gap:10px}
a.btn{text-decoration:none}
.entry{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;margin-top:14px}
.entry .date{margin-top:0}
.entry-note{font-size:.88rem;color:#f4e6c7;max-width:42ch}
.pass{display:flex;flex-direction:column;gap:2px;border:2px dashed var(--gold);border-radius:12px;padding:14px 16px;margin:14px 0 6px;background:var(--gold-soft)}
.pass small{text-transform:uppercase;letter-spacing:.1em;font-weight:700;font-size:.72rem;color:var(--gold)}
.pass strong{font:700 1.6rem var(--f-display);letter-spacing:.04em;font-variant-numeric:tabular-nums}
.pass span{font-size:.9rem}