/* Layout: cutting-mat workbench. A narrow controls column beside a large drafting
   board with a 1 cm grid; marketing sections are short bands above and below it. */
:root {
  --bg: #f6f6f9;
  --surface: #ffffff;
  --surface-2: #ececf3;
  --ink: #15152b;
  --muted: #5c5e76;
  --line: #dddde9;
  --accent: #4b3fd8;
  --accent-ink: #ffffff;
  --accent-soft: #e6e4fc;
  --thread: #f0603e;
  --chalk: #d9452b;
  --mat: #eff0f8;
  --mat-grid: #dfe1f0;
  --mat-grid-strong: #c8cbe4;
  --piece: #ffffff;
  --night: #0e0f22;
  --font-display: "Sora", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --r: 12px;
  --gutter: clamp(16px, 4vw, 40px);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0d1c; --surface: #14152a; --surface-2: #1b1d36; --ink: #e9e9f5; --muted: #a2a4be;
    --line: #2a2c48; --accent: #8f88ff; --accent-ink: #0c0d1c; --accent-soft: #26244d; --thread: #ff8466; --chalk: #ff8466;
    --mat: #111329; --mat-grid: #1b1e3b; --mat-grid-strong: #282c50; --piece: #171931; --night: #08091a; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0c0d1c; --surface: #14152a; --surface-2: #1b1d36; --ink: #e9e9f5; --muted: #a2a4be;
  --line: #2a2c48; --accent: #8f88ff; --accent-ink: #0c0d1c; --accent-soft: #26244d; --thread: #ff8466; --chalk: #ff8466;
  --mat: #111329; --mat-grid: #1b1e3b; --mat-grid-strong: #282c50; --piece: #171931; --night: #08091a; color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font-body); font-size: 15px; line-height: 1.55; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.1; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: var(--accent); }
.wrap { max-width: 1240px; margin: 0 auto; padding-inline: var(--gutter); }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.eyebrow { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* header */
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; gap: 24px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand svg { width: 34px; height: 34px; flex: none; }
.brand-text { display: grid; line-height: 1; }
.brand-name { font-family: var(--font-display); font-weight: 700; font-size: 19px; letter-spacing: -0.02em; }
.brand-name b { color: var(--accent); font-weight: 700; }
.brand-tag { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-top: 4px; }
.nav { display: flex; gap: 20px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--ink); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; padding: 10px 18px; font: 600 14px var(--font-body); border: 1px solid transparent; cursor: pointer; text-decoration: none; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); }
.btn[disabled] { opacity: 0.55; cursor: progress; }

/* hero */
.hero {
  /* a night-time drafting screen: the pattern glows on a dark grid in both themes */
  --mat: transparent; --mat-grid: rgba(143, 136, 255, 0.10); --mat-grid-strong: rgba(143, 136, 255, 0.22);
  --piece: rgba(143, 136, 255, 0.07); --ink: #eeeefa; --muted: #a9abc8; --accent: #a49dff; --chalk: #ff8466; --line: rgba(255, 255, 255, 0.12);
  color: var(--ink); position: relative; overflow: hidden;
  background:
    radial-gradient(60% 80% at 85% 20%, rgba(91, 79, 255, 0.35), transparent 70%),
    radial-gradient(40% 60% at 0% 100%, rgba(240, 96, 62, 0.18), transparent 70%),
    var(--night);
}
.hero .eyebrow { color: #c9c6ff; }
.hero .pl-cut { stroke: #cfccff; stroke-width: 0.16; }
.files-grid > .file-all { background: linear-gradient(135deg, var(--accent-soft), var(--surface)); }
.hero .btn-ghost { color: #eeeefa; border-color: rgba(255, 255, 255, 0.28); }
.hero .btn-ghost:hover { border-color: #fff; }
.hero .btn-primary { background: #fff; color: #15152b; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 40px; align-items: center; padding-block: 56px 40px; }
.hero h1 { font-size: clamp(36px, 5.4vw, 64px); font-weight: 700; }
.hero h1 { letter-spacing: -0.035em; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, #b7b1ff, #ff9a7d); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { margin-top: 18px; font-size: 18px; color: var(--muted); max-width: 52ch; }
.hero .actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.hero-board { border-radius: 18px; overflow: hidden; border: 1px solid rgba(255, 255, 255, 0.14); background: rgba(255, 255, 255, 0.03); box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.08); aspect-ratio: 5 / 4; max-width: 100%; }
.hero-board svg { width: 100%; height: 100%; display: block; }
.facts { display: flex; gap: 28px; margin-top: 32px; flex-wrap: wrap; }
.facts div { display: grid; }
.facts strong { font-family: var(--font-display); font-size: 26px; }
.facts span { font-size: 13px; color: var(--muted); }

/* sections */
section.band { padding-block: 56px; border-top: 1px solid var(--line); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; flex-wrap: wrap; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); }
.section-head p { color: var(--muted); max-width: 56ch; }

.files-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.files-grid > div { background: var(--surface); padding: 20px; display: grid; gap: 6px; align-content: start; }
.files-grid .ext { font-family: var(--font-mono); font-size: 12px; color: var(--accent); font-weight: 600; }
.files-grid h3 { font-size: 18px; }
.files-grid p { color: var(--muted); font-size: 14px; }

.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps li { display: grid; gap: 8px; }
.steps li::before { counter-increment: step; content: "0" counter(step); font-family: var(--font-mono); color: var(--accent); font-size: 13px; }
.steps h3 { font-size: 20px; }
.steps p { color: var(--muted); }

.catalog { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; display: grid; grid-template-rows: auto 1fr; }
.card .thumb {
  /* the same night-time drafting screen as the hero: each design's real pattern pieces glowing on a dark grid */
  --mat: transparent; --mat-grid: rgba(143, 136, 255, 0.10); --mat-grid-strong: rgba(143, 136, 255, 0.22);
  --piece: rgba(143, 136, 255, 0.07); --ink: #eeeefa; --muted: #a9abc8; --accent: #a49dff; --chalk: #ff8466;
  aspect-ratio: 4 / 3; border-bottom: 1px solid var(--line);
  background: radial-gradient(70% 90% at 85% 15%, rgba(91, 79, 255, 0.35), transparent 70%), var(--night);
}
.card .thumb .pl-cut { stroke: #cfccff; stroke-width: 0.16; }
.card .thumb svg { width: 100%; height: 100%; display: block; }
.card .body { padding: 18px; display: grid; gap: 10px; align-content: start; }
.card .meta { display: flex; justify-content: space-between; gap: 8px; }
.card h3 { font-size: 20px; }
.card p { color: var(--muted); font-size: 14px; }
.chip { display: inline-block; font-size: 12px; padding: 2px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--ink); }

/* builder */
#builder { scroll-margin-top: 70px; }
.builder { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 20px; align-items: start; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 18px; display: grid; gap: 18px; }
.panel h3 { font-size: 15px; font-family: var(--font-body); font-weight: 600; }
.group { display: grid; gap: 8px; }
.seg { display: flex; flex-wrap: wrap; gap: 6px; }
.seg button { border: 1px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 999px; padding: 6px 12px; font: 500 13px var(--font-body); cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 10px; }
.field { display: grid; gap: 3px; min-width: 0; }
.field label { font-size: 12px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.field input, select { width: 100%; border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 8px; padding: 7px 9px; font: 14px var(--font-mono); font-variant-numeric: tabular-nums; }
.row { display: flex; gap: 10px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.small { font-size: 12px; color: var(--muted); }
.toggle { display: inline-flex; gap: 8px; align-items: center; font-size: 13px; cursor: pointer; }

.board { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; display: grid; min-width: 0; }
.tabs { display: flex; gap: 4px; padding: 8px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.tabs button { border: 0; background: transparent; color: var(--muted); padding: 8px 14px; border-radius: 8px; font: 600 13px var(--font-body); cursor: pointer; }
.tabs button[aria-selected="true"] { background: var(--surface-2); color: var(--ink); }
.stage { background: var(--mat); position: relative; }
.stage svg { display: block; width: 100%; height: 620px; }
.stage .scale { position: absolute; left: 12px; bottom: 10px; font-family: var(--font-mono); font-size: 11px; color: var(--muted); background: color-mix(in srgb, var(--mat) 80%, transparent); padding: 2px 6px; border-radius: 4px; }
.pane-text { padding: 24px; display: grid; gap: 14px; max-width: 72ch; background: var(--surface); }
.pane-text ol { margin: 0; padding-left: 22px; display: grid; gap: 8px; }
.pane-text ul { margin: 0; padding-left: 20px; }
.summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.summary div { padding: 14px 16px; border-right: 1px solid var(--line); display: grid; gap: 2px; }
.summary div:last-child { border-right: 0; }
.summary strong { font-family: var(--font-mono); font-size: 18px; font-variant-numeric: tabular-nums; }
.summary span { font-size: 12px; color: var(--muted); }
.downloads { border-top: 1px solid var(--line); padding: 16px; display: grid; gap: 12px; }
.dl-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.dl { display: grid; gap: 2px; text-align: left; border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 8px; padding: 10px 12px; cursor: pointer; font: inherit; }
.dl:hover { border-color: var(--accent); }
.dl strong { font-size: 14px; }
.dl span { font-size: 12px; color: var(--muted); }
.dl-main { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.toast { position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 8px; font-size: 14px; z-index: 50; max-width: calc(100% - 32px); }

/* pattern drawing classes (preview) */
.pl-cut { fill: var(--piece); stroke: var(--ink); stroke-width: 0.12; stroke-linejoin: round; }
.pl-seam { fill: none; stroke: var(--muted); stroke-width: 0.06; stroke-dasharray: 0.5 0.3; }
.pl-fold { fill: none; stroke: var(--accent); stroke-width: 0.1; stroke-dasharray: 1.2 0.4 0.2 0.4; }
.pl-grain { fill: none; stroke: var(--accent); stroke-width: 0.09; }
.pl-notch { fill: none; stroke: var(--ink); stroke-width: 0.12; }
.pl-mark { fill: none; stroke: var(--chalk); stroke-width: 0.1; }
.pl-text { fill: var(--ink); }
.pl-text-fold { fill: var(--accent); }
.lay-fabric { fill: var(--surface); stroke: var(--muted); stroke-width: 0.2; }
.lay-fold { stroke: var(--accent); stroke-width: 0.3; stroke-dasharray: 2 1.2; }
.lay-piece { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 0.25; }
.lay-text { fill: var(--ink); font-family: var(--font-body); }

/* photo to pattern */
.photo-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 0.8fr); gap: 16px; align-items: stretch; }
.drop { position: relative; display: grid; gap: 6px; align-content: start; padding: 20px; border: 1.5px dashed var(--line); border-radius: var(--r); background: var(--surface); cursor: pointer; min-height: 220px; overflow: hidden; }
.drop:hover, .drop.over { border-color: var(--accent); }
.drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.drop img { width: 100%; max-height: 220px; object-fit: contain; border-radius: 6px; background: var(--mat); margin-top: 8px; }
.drop-icon { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); font: 600 13px var(--font-mono); }
.photo-actions { display: grid; gap: 10px; align-content: start; }
.result { margin-top: 24px; display: grid; gap: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; }
.result-head { display: grid; gap: 8px; }
.result table input { width: 72px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 6px; padding: 4px 6px; font: 13px var(--font-mono); text-align: right; }
.result table input.label-in { width: 64px; text-align: left; }
.result table input.filled { border-style: dashed; color: var(--muted); }
.result td .acts { display: flex; gap: 6px; justify-content: flex-end; }
.linkbtn { border: 0; background: none; color: var(--accent); font: 600 13px var(--font-body); cursor: pointer; padding: 2px 4px; }
.status-err { color: var(--chalk); }
.result-body { display: grid; gap: 18px; }
.custom-controls { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; }
.custom-controls .field:first-child { flex: 1 1 260px; }
.custom-controls .field:last-child { width: 110px; }
.custom-controls input { width: 100%; border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 8px; padding: 9px 10px; font: 14px var(--font-body); }
.custom-stage { border-radius: 8px; border: 1px solid var(--line); }
.custom-stage svg { height: 460px; }
.custom-text { padding: 0; background: transparent; }

/* guide */
.guide { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; }
.mlist { display: grid; gap: 0; border-top: 1px solid var(--line); }
.mlist div { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.mlist strong { font-size: 14px; }
.mlist span { color: var(--muted); font-size: 14px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { padding: 8px 10px; text-align: right; border-bottom: 1px solid var(--line); white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
thead th { font-family: var(--font-mono); font-size: 12px; color: var(--muted); font-weight: 600; }
td { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
td:first-child { font-family: var(--font-body); }

/* faq */
.faq { display: grid; gap: 0; border-top: 1px solid var(--line); max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin-top: 8px; color: var(--muted); }

footer { background: var(--night); color: #a9abc8; padding-block: 40px; font-size: 13px; }
footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px 32px; flex-wrap: wrap; }
footer .brand { color: #eeeefa; }
footer .brand-name b { color: #a49dff; }
footer .brand-tag { color: #a9abc8; }
footer a { color: #c9c6ff; }
footer .foot-note { display: grid; gap: 4px; text-align: right; }
@media (max-width: 640px) { footer .foot-note { text-align: left; } }

@media (max-width: 980px) {
  .hero .wrap, .builder, .guide, .photo-grid { grid-template-columns: minmax(0, 1fr); }
  .files-grid, .catalog, .steps { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .dl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .files-grid .file-all { grid-column: 1 / -1; }
}
@media (max-width: 620px) {
  .files-grid, .catalog, .steps { grid-template-columns: minmax(0, 1fr); }
  .summary { grid-template-columns: 1fr 1fr; }
  .summary div:nth-child(2) { border-right: 0; }
  .summary div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .nav { display: none; }
  .site-header .wrap { gap: 10px; flex-wrap: nowrap; }
  .site-header .btn-primary { display: none; }
  #accountBtn { margin-left: auto; padding: 8px 14px; }
  .mlist div { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .stage { min-height: 380px; }
  .stage svg { height: 420px; }
}
.custom-sizes-head { margin: 20px 0 4px; font: 600 16px var(--font-body); }

/* accounts and plans */
.plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; display: grid; gap: 12px; align-content: start; }
.plan.current { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.plan h3 { font-size: 20px; }
.plan .price { font: 700 28px var(--font-display, var(--font-body)); }
.plan .quota { color: var(--accent); font-weight: 600; font-size: 14px; }
.plan ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 14px; display: grid; gap: 4px; }
.plan .btn { justify-self: start; }
#payNote { margin-top: 14px; }
.account-dialog { border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); color: var(--ink); padding: 26px; width: min(420px, calc(100% - 32px)); position: relative; }
.account-dialog::backdrop { background: rgba(0, 0, 0, 0.45); }
.account-dialog h2 { font-size: 22px; margin-bottom: 6px; }
.account-dialog form, .account-dialog #accountInfo { display: grid; gap: 12px; }
.account-dialog .field input { font-family: var(--font-body); padding: 10px; }
.dialog-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.dialog-close { position: absolute; top: 10px; right: 12px; border: 0; background: none; color: var(--muted); font-size: 24px; line-height: 1; cursor: pointer; padding: 4px 8px; }
#authError:empty { display: none; }
.pay-steps { margin: 0; padding-left: 20px; color: var(--muted); font-size: 14px; display: grid; gap: 2px; }
.pay-accounts { display: grid; gap: 8px; }
.pay-account { display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.pay-account strong { font-size: 14px; }
.pay-account span { grid-column: 1; font: 14px var(--font-mono); overflow-wrap: anywhere; }
.pay-account .linkbtn { grid-column: 2; grid-row: 1 / span 2; align-self: center; }
.pay-dialog { width: min(480px, calc(100% - 32px)); max-height: calc(100dvh - 32px); overflow: auto; }
.pay-dialog select, .pay-dialog input[type="file"] { font-family: var(--font-body); }
.pay-history { margin: 0; padding-left: 18px; font-size: 13px; color: var(--muted); }
.pay-history:empty { display: none; }
.pay-history .pay-approved { color: var(--accent); }
.pay-history .pay-rejected { color: var(--chalk); }
#payError:empty { display: none; }
.credits { margin: 0 0 10px; font-size: 13px; color: var(--accent); font-weight: 600; }

/* demo builder: preview only */
.downloads.demo #patternCredits { display: none !important; }
.downloads.demo .btn[disabled], .downloads.demo .dl[disabled] { opacity: 0.45; cursor: not-allowed; filter: grayscale(0.4); }
.demo-note { background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); border-radius: 10px; padding: 10px 14px; font-size: 14px; }
.demo-tag { display: inline-block; margin-right: 8px; font: 600 11px var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; background: var(--accent); color: var(--accent-ink); border-radius: 999px; padding: 2px 9px; }