/* Palette and typography from the existing GitHub stamp-original.css; see asset-provenance.json. */
:root{--paper:#faf8f3;--ink:#292720;--muted:#645f56;--line:#dfdbd0;--brown:#674b36;--sand:#efe9dc;--forest:#264d3d;color-scheme:light;font-family:"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--paper)}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:4px}button,input{font:inherit}button,a,input{touch-action:manipulation}[hidden]{display:none!important}:focus-visible{outline:3px solid var(--forest);outline-offset:4px}
.topbar{max-width:1040px;margin:auto;padding:25px 32px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line)}.topbar img{display:block;max-width:100%;height:auto}.business{font-size:13px;color:var(--muted);text-align:right}.demo{max-width:976px;margin:18px auto;padding:14px 18px;border:1px solid var(--line);border-radius:12px;background:var(--sand);display:flex;flex-wrap:wrap;gap:8px 20px;font-size:12px}.demo strong{letter-spacing:.06em;text-transform:uppercase}.demo nav{display:flex;gap:20px;width:100%;padding-top:4px}
main{max-width:560px;margin:64px auto 80px;padding:0 24px}.eyebrow{font-size:10px;letter-spacing:.14em;color:var(--brown);font-weight:700}h1{font-size:clamp(42px,8vw,60px);letter-spacing:-.055em;line-height:1.02;font-weight:550;margin:16px 0 30px}h1 em{font-family:Georgia,serif;font-weight:400;color:var(--brown)}h2{font-size:22px;letter-spacing:-.035em;margin:0 0 16px}p{line-height:1.65;color:var(--muted);font-size:14px}.panel{background:white;border:1px solid var(--line);border-radius:18px;padding:28px;margin-bottom:20px}.panel>p:first-of-type{margin-top:0}label{display:block;font-size:13px;font-weight:600;margin:18px 0 9px}input:not([type=checkbox]){width:100%;min-height:50px;border:1px solid #b9b2a5;border-radius:8px;padding:12px;background:var(--paper);color:var(--ink);font-size:16px}input[readonly]{color:var(--muted)}button{width:100%;min-height:50px;padding:13px 18px;border:1px solid var(--brown);border-radius:8px;background:var(--brown);color:#fffdf6;font-weight:600;font-size:14px;cursor:pointer;margin-top:16px;display:flex;justify-content:space-between;align-items:center;gap:10px}button:hover{background:#493525}button:disabled{opacity:.55;cursor:wait}.quiet{background:transparent;border-color:var(--line);color:var(--ink);justify-content:center}.quiet:hover{background:var(--sand)}small{display:block;margin-top:12px;font-size:11px;line-height:1.7;color:var(--muted)}.message{margin:0 0 20px;border-left:3px solid var(--forest);padding-left:14px}.message:empty{display:none}.message.error{border-color:#a53526;color:#8b2b20}.test-code{background:var(--sand);padding:12px;border-radius:7px;font-weight:600;letter-spacing:.05em}
.loyalty-card{background:var(--sand);border:1px solid var(--line);padding:30px;border-radius:20px;margin-bottom:20px;box-shadow:0 16px 38px -30px #674b3677}.loyalty-card .eyebrow{margin:0 0 16px}.loyalty-card h2{font-size:26px;line-height:1.15;max-width:320px}.progress-label{font-size:14px;margin:20px 0 0}.stamps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;list-style:none;margin:24px 0 10px;padding:0}.stamp{aspect-ratio:1;border:1px dashed #9b8c77;border-radius:50%;display:grid;place-items:center;font-size:17px;color:#746858}.stamp.filled{background:var(--brown);border:1px solid var(--brown);color:#fffdf6}.reward{background:var(--forest);color:#fffdf6;padding:16px;border-radius:10px;font-size:14px;line-height:1.5;margin:20px 0 0}.card-reference{padding:8px 3px 0;font-size:13px}.card-reference input{font-family:monospace;font-size:13px}.card-reference label{font-size:11px;color:var(--muted)}.actions{display:flex;gap:12px;margin-top:10px}.demo-link{display:block;margin-top:25px;font-size:12px;line-height:1.6}.checkbox{display:flex;gap:12px;align-items:flex-start;font-weight:400;font-size:13px;line-height:1.6}.checkbox input{width:18px;height:18px;accent-color:var(--forest);flex:none;margin-top:2px}.visit-panel{padding-top:8px}footer{max-width:976px;margin:0 auto;padding:24px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted)}
@media(max-width:640px){.topbar{padding:19px 22px}.topbar img{width:145px}.business{max-width:130px;font-size:11px}.demo{margin:14px 20px}.demo span{line-height:1.5}main{margin-top:38px;padding:0 22px}.panel,.loyalty-card{padding:22px}.stamps{gap:8px}.card-reference input{font-size:12px}footer{margin:0 22px;flex-wrap:wrap;padding:22px 0}.visit-panel{padding-top:6px}}
@media(prefers-reduced-motion:no-preference){button{transition:background .15s ease}}


/* Smart Login pilot: one prominent no-SMS action, optional explicit account backup. */
.login-separator{margin:26px 0 12px;padding-top:22px;border-top:1px solid var(--line);font-weight:600;color:var(--ink);font-size:13px}
#guest-start{background:var(--forest);border-color:var(--forest);margin-bottom:8px}
#guest-start:hover{background:#1b372c}
.backup-panel{margin-top:24px;background:#fffdf8;border-color:var(--line)}
.backup-panel h2{font-size:20px}
.backup-panel small{max-width:420px}

/* Loopback-only NFC demo action: never promoted as a real chip reader. */
.demo .demo-tap-button{width:auto;min-height:38px;padding:8px 13px;margin-top:3px;font-size:12px;border-color:var(--forest);background:var(--forest)}

/* Emergency-only manual alternative; secure NFC remains primary. */
.visit-code-panel{margin-top:22px}
.visit-code-panel summary{cursor:pointer;font-size:13px;font-weight:700;color:var(--muted);padding:2px 0}
.visit-code-panel[open] summary{color:var(--ink);margin-bottom:12px}


/* PEAK STAMP Studio: read-only seasonal Webcard skin.
   Businesses must opt in and approve; the backend resolves effective windows.
   No dynamic CSS URLs and no Wallet-provider update claims. */
.loyalty-card-seasonal{background:var(--season-bg);color:var(--season-ink);border-color:transparent;position:relative;isolation:isolate;overflow:hidden}
.loyalty-card-seasonal::before{content:"";position:absolute;right:-64px;top:-82px;width:170px;height:170px;border:24px solid var(--season-accent);opacity:.22;border-radius:50%;z-index:-1;pointer-events:none}
.loyalty-card-seasonal .eyebrow,.loyalty-card-seasonal .progress-label{color:inherit;opacity:.89}
.loyalty-card-seasonal .stamp{border-color:var(--season-accent);color:inherit}
.loyalty-card-seasonal .stamp.filled{background:var(--season-accent);border-color:var(--season-accent);color:var(--season-bg)}
.loyalty-card-seasonal .season-name{font-size:10px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--season-accent);margin:0 0 7px}
.loyalty-card-seasonal .season-description{font-size:12px;color:inherit;opacity:.85;line-height:1.6;margin:0 0 16px;max-width:320px}
.loyalty-card-seasonal .reward{background:var(--season-accent);color:var(--season-bg)}


/* Merchant card designer: theme preserves actual stamp/reward data.
   Announcements are card-only text and automatically expire on server read. */
.loyalty-card-custom .eyebrow,.loyalty-card-custom h2{color:inherit}
.card-mini-announcement{color:inherit;border:1px solid currentColor;border-radius:11px;
  padding:10px 13px;margin:10px 0 5px;font-size:12px;line-height:1.5;
  font-weight:700;overflow-wrap:anywhere}


/* Validated, locally processed brand images and readable, fixed style options. */
.loyalty-card .card-brand-logo{display:block;width:70px;height:70px;object-fit:contain;border-radius:15px;background:#ffffffd9;margin:0 0 17px}.loyalty-card[data-logo-shape=circle] .card-brand-logo{border-radius:50%}.loyalty-card[data-logo-shape=original] .card-brand-logo{border-radius:0;background:transparent}.card-brand-headline{font-family:Georgia,serif;font-size:23px;color:inherit;line-height:1.25;margin:0 0 18px;overflow-wrap:anywhere}.loyalty-card[data-font=modern] .card-brand-headline{font-family:Arial,sans-serif;font-weight:650}.loyalty-card[data-font=rounded] .card-brand-headline{font-family:"Trebuchet MS",Arial,sans-serif;font-weight:600}.loyalty-card[data-pattern=plain]::before{display:none}.loyalty-card[data-pattern=dots]::before{inset:0;width:auto;height:auto;border:0;border-radius:0;background-image:radial-gradient(var(--season-accent) 1px,transparent 1px);background-size:15px 15px;opacity:.15}

.contact-panel{margin-top:22px}.contact-panel summary{font-size:13px;font-weight:650;cursor:pointer;line-height:1.5}.contact-panel>p{font-size:12px}.contact-panel #contact-state{background:#edf2e4;border-radius:8px;padding:9px 12px;font-weight:600}.contact-panel .checkbox{font-size:12px}.contact-panel button{font-size:12px}
.wallet-panel{margin-top:24px;background:#fffdf8;border-color:var(--line)}
.wallet-panel h2{font-size:20px}
.wallet-actions{display:flex;flex-wrap:wrap;gap:10px}
.wallet-actions button{flex:1 1 200px}