:root{
  --ink:#14213d; --ink-2:#2b3a5c; --paper:#f3f5f8; --white:#fff; --line:#dbe1e8; --muted:#5d6b7c; --tape:#f2c14e; --ok:#1f7a55; --bad:#b4321f;
  --sans:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
body{background:var(--paper);color:var(--ink);font:15px/1.5 var(--sans);-webkit-text-size-adjust:100%}
#app{max-width:1080px;margin:0 auto;padding:calc(12px + env(safe-area-inset-top,0px)) 16px 24px}
h1,h2,h3{margin:0;line-height:1.25;letter-spacing:-.01em}
h1{font-size:30px;font-weight:750;text-wrap:balance}
h2{font-size:19px;font-weight:700}
h3{font-size:16px;font-weight:650}
a{color:var(--ink)}
.small{font-size:13px;font-weight:400;color:var(--muted);margin:0}
.err{color:var(--bad);font-size:14px;margin:0}
.err.ok{color:var(--ok)}
.copyrow .btn{white-space:nowrap;flex:none}
.row{display:flex;align-items:center;gap:10px}
.row.between{justify-content:space-between}
.row.end{justify-content:flex-end}
.row.wrap{flex-wrap:wrap}
.spin{display:inline-block;width:16px;height:16px;border-radius:50%;border:2px solid var(--line);border-top-color:var(--ink);animation:s .8s linear infinite;vertical-align:-3px}
@keyframes s{to{transform:rotate(1turn)}}
@media (prefers-reduced-motion:reduce){.spin{animation-duration:2.4s}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:42px;padding:0 16px;border-radius:10px;border:0;background:var(--white);color:var(--ink);
  box-shadow:inset 0 0 0 1.5px var(--line);font:inherit;font-weight:600;text-decoration:none;cursor:pointer;white-space:nowrap}
.btn:hover{box-shadow:inset 0 0 0 1.5px var(--ink-2)}
.btn.primary{background:var(--ink);color:#fff;box-shadow:none}
.btn.primary:hover{background:var(--ink-2)}
.btn.small{min-height:34px;padding:0 12px;font-size:14px;border-radius:8px}
.btn.ghost{box-shadow:none;background:transparent}
.btn.danger{color:var(--bad)}
.btn.danger:not(.ghost){box-shadow:inset 0 0 0 1.5px var(--bad)}
.btn[disabled]{opacity:.55;cursor:progress}
.link{border:0;background:none;padding:4px 0;font:inherit;color:var(--ink);text-decoration:underline;text-underline-offset:3px;cursor:pointer}
:focus-visible{outline:3px solid var(--tape);outline-offset:2px}

/* forms */
.form{display:grid;gap:14px}
label{display:grid;gap:5px;font-size:14px;font-weight:600}
input,textarea,select{font:inherit;font-weight:400;font-size:16px;padding:10px 12px;border-radius:10px;border:1.5px solid var(--line);background:var(--white);color:var(--ink);width:100%;min-width:0}
input:focus,textarea:focus,select:focus{border-color:var(--ink);outline:none}
select{width:auto}
.two{display:grid;gap:14px;align-items:start}
.two label{align-content:start}
@media (min-width:640px){.two{grid-template-columns:1fr 1fr}}
fieldset{border:0;padding:0;margin:0;display:grid;gap:8px}
legend{font-size:14px;font-weight:600;padding:0;margin-bottom:6px}
.progress{margin:0;color:var(--muted);font-size:14px;display:flex;gap:8px;align-items:center}

/* the true-size ruler: a 160 mm line fills the row, one tick every 10 mm */
.ruler{display:flex;align-items:center;gap:10px;margin:2px 0}
.ruler-bar{display:block;height:11px;width:calc(var(--mm) / 160 * 180px);max-width:60%;border-bottom:2px solid var(--ink);
  background:repeating-linear-gradient(90deg,var(--ink) 0 1.5px,transparent 1.5px calc(100% / (var(--mm) / 10)));background-size:100% 6px;background-repeat:no-repeat;background-position:bottom}
.ruler-text{font-size:14px;font-variant-numeric:tabular-nums;color:var(--muted)}

/* signed out */
.auth{display:grid;gap:24px;padding:20px 0 8px}
@media (min-width:860px){.auth{grid-template-columns:1.15fr .85fr;align-items:center;min-height:78vh}}
.auth.single{grid-template-columns:minmax(0,440px);justify-content:center}
.logo{display:flex;align-items:center;gap:10px;font-weight:750;font-size:18px}
.intro{display:grid;gap:22px;max-width:560px}
.intro h1{font-size:clamp(28px,4.6vw,44px);line-height:1.12}
.steps{margin:0;padding:0 0 0 22px;display:grid;gap:10px;color:var(--ink-2);font-size:17px}
.steps li::marker{font-weight:700;color:var(--ink)}
.demo-ruler{display:flex;align-items:center;gap:12px;font-variant-numeric:tabular-nums;color:var(--muted)}
.demo-ruler .ruler-bar{width:min(320px,70vw);max-width:none;height:16px;border-bottom-width:3px;background-size:100% 9px}
.panel{background:var(--white);border-radius:18px;padding:20px;display:grid;gap:14px}
.auth-box{max-width:440px;width:100%;justify-self:center}

/* signed in */
.top{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:6px 0 12px}
.top .logo{margin-right:auto}
.meter{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.meter b{color:var(--ink)}
.plan-name{font-weight:700;color:var(--ink);background:var(--tape);padding:1px 8px;border-radius:6px}
.tabs{display:flex;gap:4px;border-bottom:1.5px solid var(--line);margin-bottom:16px;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tabs button{border:0;background:none;font:inherit;font-weight:600;color:var(--muted);padding:10px 14px;cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-1.5px;white-space:nowrap}
.tabs button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--ink)}
.notice{background:#fff7dc;border-radius:12px;padding:10px 14px;margin:0 0 14px;font-size:14px}
.notice.warn{background:#fde8e3}
main{display:grid;gap:16px}

/* add a frame */
.add-form{gap:18px}
@media (min-width:760px){.add-form{grid-template-columns:minmax(0,300px) 1fr;align-items:start}}
.photo-pick{display:grid;gap:8px}
.photo-box{aspect-ratio:4/3;border-radius:14px;border:2px dashed var(--line);display:grid;place-items:center;cursor:pointer;position:relative;overflow:hidden;background:var(--paper)}
.photo-box:hover,.photo-box.drag{border-color:var(--ink)}
.photo-box img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#fff}
.photo-empty{font-weight:600}
.photo-box.has .photo-empty{position:absolute;bottom:8px;right:8px;background:rgb(255 255 255 / .92);padding:3px 10px;border-radius:8px;font-size:13px}
.fields{display:grid;gap:14px}

/* lists */
.list{display:grid;gap:12px}
@media (min-width:760px){.list{grid-template-columns:1fr 1fr}}
.card{background:var(--white);border-radius:18px;padding:14px;display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:start}
.thumb{aspect-ratio:16/10;display:grid;place-items:center;background:var(--paper);border-radius:12px;overflow:hidden}
.thumb img{width:92%;height:92%;object-fit:contain}
.card .body{display:grid;gap:8px;min-width:0}
.card h3{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px}
.swatches{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.swatch{display:grid;justify-items:center;gap:2px;width:72px;padding:4px 4px 5px;border:0;border-radius:10px;background:var(--paper);font:inherit;font-size:12px;color:var(--ink);cursor:pointer;box-shadow:inset 0 0 0 1px var(--line)}
.swatch img{width:100%;aspect-ratio:2/1;object-fit:contain}
.swatch span{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.swatch:hover{box-shadow:inset 0 0 0 1.5px var(--ink)}
.dlg .row.between{flex-wrap:wrap}
.pill{font-size:12px;font-weight:600;color:var(--muted);background:var(--paper);padding:2px 9px;border-radius:999px;white-space:nowrap}
.pill.on{color:var(--ok);background:#e2f3ea}
.warn-text{color:#8a5a00}
.empty{color:var(--muted);margin:8px 0}
.card.coll{grid-template-columns:1fr}
.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.strip img{width:100%;aspect-ratio:16/10;object-fit:contain;background:var(--paper);border-radius:8px}
@media (max-width:520px){.card{grid-template-columns:88px 1fr;gap:12px;padding:12px}.actions .btn.small{padding:0 10px}}

/* dialogs */
.dlg{border:0;border-radius:20px;padding:22px;width:min(760px,calc(100vw - 24px));max-height:calc(100vh - 24px);color:var(--ink);box-shadow:0 20px 60px rgb(20 33 61 / .25)}
.dlg::backdrop{background:rgb(20 33 61 / .45)}
.dlg h2{margin:0 36px 16px 0}
.dlg-close{position:absolute;top:12px;right:12px;margin:0}
.icon{width:36px;height:36px;border-radius:50%;border:0;background:var(--paper);font-size:22px;line-height:1;cursor:pointer;color:var(--ink)}
.share{display:grid;gap:20px}
@media (min-width:640px){.share{grid-template-columns:220px 1fr}}
.share-qr{display:grid;gap:10px;justify-items:center;align-content:start}
.share-qr img{width:200px;height:200px;border-radius:12px;box-shadow:0 0 0 1.5px var(--line)}
.share-main{display:grid;gap:10px;align-content:start;min-width:0}
.share-main h3{margin-top:8px}
.copyrow{display:flex;gap:8px}
.code{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:start}
.code pre{margin:0;background:var(--paper);border-radius:10px;padding:10px 12px;font:12.5px/1.45 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap;word-break:break-all;max-height:140px;overflow:auto}
.locked{background:#fff7dc;border-radius:10px;padding:10px 12px;color:var(--ink)}
.edit-photo{display:flex;align-items:center;gap:12px}
.edit-photo img{width:140px;aspect-ratio:16/10;object-fit:contain;background:var(--paper);border-radius:10px}
.pick{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px;max-height:46vh;overflow:auto;padding:2px}
.pick-item{position:relative;display:grid;gap:4px;font-weight:400;font-size:13px;padding:8px;border-radius:12px;box-shadow:inset 0 0 0 1.5px var(--line);cursor:pointer}
.pick-item input{position:absolute;top:8px;left:8px;width:18px;height:18px;padding:0}
.pick-item img{width:100%;aspect-ratio:16/10;object-fit:contain}
.pick-item:has(input:checked){box-shadow:inset 0 0 0 2px var(--ink);background:#eef1f6}
.pick-item span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* analytics */
.totals{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.totals div{display:grid;background:var(--paper);border-radius:14px;padding:12px 14px}
.totals b{font-size:28px;font-variant-numeric:tabular-nums}
.totals span{font-size:13px;color:var(--muted)}
.bars{display:flex;align-items:flex-end;gap:2px;height:80px;margin:6px 0}
.bars i{flex:1;background:var(--ink-2);border-radius:2px 2px 0 0;min-height:2px;opacity:.85}
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse;font-size:14px;font-variant-numeric:tabular-nums}
.table th,.table td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}
.table th{font-weight:600;color:var(--muted);font-size:13px}
.table td:not(:first-child),.table th:not(:first-child){text-align:right}
.plans tr.current td{font-weight:700;background:#fff7dc}
.usage{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.usage div{display:grid;background:var(--paper);border-radius:12px;padding:10px 12px}
.usage span{font-size:13px;color:var(--muted)}
.usage b{font-size:20px;font-variant-numeric:tabular-nums}
.danger-zone summary{cursor:pointer;color:var(--bad);font-weight:600;margin-top:4px}
.danger-zone .form{margin-top:10px}

.foot{display:flex;gap:18px;justify-content:center;font-size:13px;color:var(--muted);padding:28px 0 8px}
.foot a{color:var(--muted)}
#toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 16px;border-radius:12px;font-size:14px;z-index:10;max-width:calc(100vw - 32px)}