:root{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#172339;background:#f5f7fb;line-height:1.5;font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input{font:inherit}[hidden]{display:none!important}
.masthead{background:#111e35;color:#fff}.mast-inner{max-width:1300px;margin:auto;min-height:66px;padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:15px}
.brand{font-size:19px;font-weight:750;display:flex;align-items:center;gap:10px}.brand-icon{display:grid;place-items:center;width:32px;height:32px;border-radius:8px;background:#355dc8;font-size:23px}
.privacy{color:#d1def5;font-size:13px;display:flex;align-items:center;gap:8px}.privacy i{width:7px;height:7px;border-radius:50%;background:#81dfb5}
main{max-width:1300px;margin:auto;padding:34px 32px 16px}.intro{margin-bottom:27px}.eyebrow{font-size:11px;letter-spacing:.12em;font-weight:750;color:#345ab8}
h1{font-size:clamp(28px,4vw,42px);letter-spacing:-.04em;line-height:1.12;margin:6px 0 8px}.intro p{margin:0;color:#4b5b73;font-size:15px}
.workspace{display:grid;grid-template-columns:290px minmax(0,1fr);gap:18px;align-items:start}
.settings,.preview{background:#fff;border:1px solid #dce3ef;border-radius:14px;overflow:hidden;box-shadow:0 2px 10px #182b4d08}
.settings-section{padding:18px;border-bottom:1px solid #e8edf4}.settings-section:last-child{border:0}h2{font-size:14px;margin:0;font-weight:750}
.drop{margin-top:11px;display:flex;align-items:center;flex-direction:column;gap:3px;border:1.5px dashed #9fb4e4;border-radius:10px;background:#f4f7ff;padding:13px 7px;cursor:pointer}
.drop:hover,.drop.drag,.drop:has(+input:focus-visible){background:#e8efff;border-color:#345fc8;outline:2px solid #9ab4f4;outline-offset:2px}
.upload-icon{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:#dee8ff;color:#234caa;font-weight:800}.drop strong{font-size:14px}.drop span:last-child,.help,.filename{font-size:12px;color:#53627a}
.filename{margin:8px 0 0;overflow-wrap:anywhere}.filename:empty{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;clip:rect(0,0,0,0);overflow:hidden}
.check,.field{display:flex;align-items:center;gap:8px;font-size:13px;margin-top:11px}.check input{accent-color:#315cc9}.field{justify-content:space-between}
.input-unit{display:flex;align-items:center;gap:6px;color:#53627a}.input-unit input{width:71px;border:1px solid #cbd6e5;border-radius:6px;padding:5px 7px;color:#172339;background:#fff}.input-unit input:disabled{background:#edf1f7}
.help{margin:6px 0 0}details{margin-top:14px;border-top:1px solid #e8edf4;padding-top:11px}summary{cursor:pointer;font-size:13px;color:#405475}
button{width:100%;border:0;border-radius:8px;background:#2851b7;color:#fff;font-weight:700;text-align:left;padding:11px 13px;cursor:pointer}button span{float:right}button:hover:not(:disabled){background:#173b99}button:disabled{background:#e5eaf3;color:#65728a;cursor:default}
.preview-bar{display:flex;align-items:center;justify-content:space-between;padding:13px 16px;border-bottom:1px solid #e5eaf3}.size{font-size:12px;color:#465878;font-variant-numeric:tabular-nums}
.preview-body{min-height:420px;display:grid;place-items:center;padding:22px;background-color:#edf1f8;background-image:radial-gradient(#cad4e5 1px,transparent 1px);background-size:16px 16px}
.placeholder{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px}.placeholder strong{margin-top:6px}.placeholder span{font-size:13px;color:#53627a}
canvas{display:block;width:auto;height:auto;max-width:100%;max-height:530px;background:white;box-shadow:0 2px 12px #25385a25}
#status{min-height:42px;padding:10px 16px;font-size:12px;color:#52647d}#status.error{background:#fff2f2;color:#9e2334}
footer{margin-top:16px;font-size:12px;color:#54627a}
@media(max-width:720px){.workspace{grid-template-columns:1fr}.preview-body{min-height:285px;padding:14px}main{padding:22px 14px 14px}.mast-inner{padding:0 15px}.settings-section{padding:13px}canvas{max-height:440px}}