/* Self-hosted fonts (SIL Open Font License). No requests go to Google. */
@font-face {
  font-family: 'Bricolage Grotesque';
  font-style: normal;
  font-weight: 500 800;
  font-stretch: 100%;
  font-display: swap;
  src: url(/assets/fonts/bricolage-grotesque-500-800.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/assets/fonts/ibm-plex-mono-400.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/assets/fonts/ibm-plex-mono-500.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url(/assets/fonts/outfit-400-600.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Layout: a cinematic dark hero (3D sheets orbiting, then binding into one stack), a three-step band, then the working bench: file stack left, output slip right. */
:root {
  --bg: #f7f6ff;
  --surface: #ffffff;
  --surface-2: #f2efff;
  --ink: #17123a;
  --muted: #565077;
  --line: #17123a1f;
  --violet: #6236ff;
  --blue: #2f6bff;
  --teal: #00968f;
  --warn: #c2351f;
  --warn-soft: #fde9e5;
  --example: #8a5a00;
  --example-soft: #fbf0d9;
  --ok: #00806f;
  --grad: linear-gradient(110deg, #6236ff 0%, #2f6bff 55%, #00968f 100%);
  --grad-strong: linear-gradient(120deg, #6236ff 0%, #4a4dff 50%, #2f6bff 100%);
  --shadow: 0 20px 50px -30px #3c1e8c59;
  --font-display: "Bricolage Grotesque", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Outfit", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --radius: 18px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  /* hero is always dark, in both themes */
  --h-bg: #080a16;
  --h-ink: #f3f4ff;
  --h-muted: #cdd1ea;
  --h-grad: linear-gradient(110deg, #c4b8ff 0%, #8fb0ff 50%, #7ff0e6 100%);
  --h-line: #d6deff24;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #080a16; --surface: #11142a; --surface-2: #161a34; --ink: #f3f4ff; --muted: #a0a6c8;
    --line: #d6deff1f; --violet: #b5a6ff; --blue: #5b8cff; --teal: #62e3d6;
    --warn: #ff8f7c; --warn-soft: #3a1f1b; --example: #e9b95a; --example-soft: #33280f; --ok: #62e3d6;
    --grad: linear-gradient(110deg, #c4b8ff 0%, #8fb0ff 50%, #7ff0e6 100%);
    --grad-strong: linear-gradient(120deg, #6d4dff 0%, #4f63ff 50%, #2f8bff 100%);
    --shadow: 0 24px 60px -30px #000c;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #080a16; --surface: #11142a; --surface-2: #161a34; --ink: #f3f4ff; --muted: #a0a6c8;
  --line: #d6deff1f; --violet: #b5a6ff; --blue: #5b8cff; --teal: #62e3d6;
  --warn: #ff8f7c; --warn-soft: #3a1f1b; --example: #e9b95a; --example-soft: #33280f; --ok: #62e3d6;
  --grad: linear-gradient(110deg, #c4b8ff 0%, #8fb0ff 50%, #7ff0e6 100%);
  --grad-strong: linear-gradient(120deg, #6d4dff 0%, #4f63ff 50%, #2f8bff 100%);
  --shadow: 0 24px 60px -30px #000c;
  color-scheme: dark;
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font-body); font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; overflow-x: clip;
}
.gutter {
  max-width: 1160px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; margin: 0; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.eyebrow { font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; }

.btn {
  font: inherit; font-weight: 600; cursor: pointer; text-decoration: none;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 24px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  transition: transform .4s var(--ease), box-shadow .4s, border-color .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn.primary {
  color: #fff; border: 0; background: var(--grad-strong); background-size: 160% 100%;
  box-shadow: 0 12px 30px -10px #6236ff8c, inset 0 1px #ffffff40;
}
.btn.primary:hover { background-position: 100% 0; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.btn:focus-visible, .icon-btn:focus-visible, input:focus-visible, .seg input:focus-visible + span, a:focus-visible {
  outline: 2px solid var(--blue); outline-offset: 3px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  background:
    radial-gradient(60% 70% at 78% 40%, #6d4dff33 0%, transparent 60%),
    radial-gradient(40% 50% at 95% 90%, #62e3d61f 0%, transparent 70%),
    var(--h-bg);
  color: var(--h-ink);
}
#hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; display: block; }
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(90deg, #080a16e6 0%, #080a16a6 38%, transparent 62%),
              linear-gradient(0deg, var(--h-bg) 0%, transparent 18%);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 18px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--h-ink); text-decoration: none; min-width: 0; }
.brand img { width: 42px; height: 42px; border-radius: 50%; box-shadow: 0 0 24px #6d4dff66; }
.brand b { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; letter-spacing: -.01em; }
.brand small { display: block; color: var(--h-muted); font-size: .78rem; line-height: 1.2; }
.nav a.out { color: var(--h-muted); text-decoration: none; font-size: .92rem; border: 1px solid var(--h-line); border-radius: 999px; padding: 8px 16px; white-space: nowrap; }
.nav a.out:hover { color: var(--h-ink); border-color: #d6deff55; }

.hero-body { padding-block: clamp(48px, 9vw, 120px) clamp(72px, 10vw, 140px); max-width: 1160px; }
.hero-copy { max-width: 560px; display: grid; gap: 22px; }
.hero .eyebrow { color: #9eb6ff; display: inline-flex; align-items: center; gap: 10px; }
.hero .eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--h-grad); }
.hero h1 { font-size: clamp(2.5rem, 6vw, 4.6rem); line-height: 1.02; font-weight: 800; letter-spacing: -.03em; }
.hero h1 .grad-text { background: var(--h-grad); -webkit-background-clip: text; background-clip: text; }
.hero p.lede { color: var(--h-muted); font-size: 1.15rem; max-width: 46ch; margin: 0; }
.hero .ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .btn.ghost { background: #ffffff0f; color: var(--h-ink); border-color: var(--h-line); backdrop-filter: blur(10px); }
.trust { display: flex; flex-wrap: wrap; gap: 8px 20px; list-style: none; padding: 0; margin: 4px 0 0; color: var(--h-muted); font-size: .92rem; }
.trust li { display: inline-flex; align-items: center; gap: 8px; }
.trust li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #7ff0e6; box-shadow: 0 0 10px #7ff0e6; }

.reveal { animation: rise .9s var(--ease) both; animation-delay: var(--d, 0ms); }
@keyframes rise { from { opacity: .001; transform: translateY(18px); filter: blur(6px); } }

@media (max-width: 760px) {
  .hero::after { background: linear-gradient(180deg, #080a16cc 0%, #080a1699 55%, var(--h-bg) 100%); }
  .brand small { display: none; }
}

/* ---------- Steps band ---------- */
.steps { padding-block: 72px 24px; display: grid; gap: 32px; }
.steps header { display: grid; gap: 10px; max-width: 640px; }
.steps .eyebrow { color: var(--violet); }
.steps h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); line-height: 1.1; letter-spacing: -.02em; font-weight: 700; }
.steps header p { margin: 0; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; perspective: 1000px; list-style: none; margin: 0; padding: 0; }
@media (max-width: 820px) { .cards { grid-template-columns: minmax(0, 1fr); } }
.card {
  position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); display: grid; gap: 10px; align-content: start;
  transform-style: preserve-3d; transition: transform .5s var(--ease);
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), #6d4dff1f, transparent 45%);
}
.card .n { font-family: var(--font-mono); font-size: .8rem; color: var(--muted); }
.card h3 { font-size: 1.3rem; font-weight: 700; letter-spacing: -.01em; transform: translateZ(30px); }
.card p { margin: 0; color: var(--muted); transform: translateZ(18px); }
.card svg { width: 56px; height: 56px; transform: translateZ(40px); }

/* ---------- Tool ---------- */
.tool { padding-block: 48px 80px; display: grid; gap: 20px; scroll-margin-top: 16px; }
.tool > header h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); font-weight: 700; letter-spacing: -.02em; }
.tool > header p { margin: 4px 0 0; color: var(--muted); }
.bench { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 24px; align-items: start; }
@media (max-width: 900px) { .bench { grid-template-columns: minmax(0, 1fr); } }
.col { display: grid; gap: 12px; min-width: 0; }

.drop {
  border: 1.5px dashed var(--line); border-radius: var(--radius); background: var(--surface);
  padding: 22px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px;
  transition: border-color .15s, background .15s;
}
.drop.over { border-color: var(--blue); background: var(--surface-2); }
.drop .hint { color: var(--muted); flex: 1 1 220px; min-width: 0; }
.drop .hint strong { color: var(--ink); font-weight: 600; }
input[type="file"] { display: none; }

.notice {
  display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center;
  background: var(--example-soft); color: var(--example); border-radius: 12px; padding: 10px 14px; font-size: .92rem;
}
.notice span { flex: 1 1 240px; min-width: 0; }
.link-btn { font: inherit; background: none; border: 0; padding: 0; color: inherit; text-decoration: underline; cursor: pointer; font-weight: 600; }

.stack { display: grid; gap: 8px; list-style: none; margin: 0; padding: 0; }
.row {
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 12px; align-items: center;
  padding: 12px 12px 12px 8px;
}
.row.dragging { opacity: .4; }
.row.drop-before { box-shadow: 0 -3px 0 var(--blue); }
.row.drop-after { box-shadow: 0 3px 0 var(--blue); }
.row.bad { border-color: var(--warn); }
.order { display: grid; justify-items: center; gap: 2px; color: var(--muted); }
.order .num { font-family: var(--font-mono); font-size: .8rem; font-variant-numeric: tabular-nums; }
.grip { cursor: grab; padding: 2px 4px; user-select: none; letter-spacing: -2px; font-size: .9rem; }
.meta { min-width: 0; display: grid; gap: 6px; }
.name-line { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; min-width: 0; }
.name { font-weight: 600; overflow-wrap: anywhere; }
.facts { font-family: var(--font-mono); font-size: .78rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.chip { font-size: .68rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; background: var(--example-soft); color: var(--example); border-radius: 4px; padding: 1px 6px; }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.controls label { font-size: .82rem; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.range {
  font-family: var(--font-mono); font-size: .85rem; width: 12ch;
  padding: 4px 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink);
}
.range.invalid { border-color: var(--warn); background: var(--warn-soft); }
.err { color: var(--warn); font-size: .82rem; }
.actions { display: flex; gap: 4px; }
.icon-btn {
  font: inherit; font-size: .85rem; cursor: pointer; min-width: 34px; height: 34px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink);
  display: inline-grid; place-items: center; padding: 0 6px;
}
.icon-btn:hover { border-color: var(--muted); }
.icon-btn:disabled { opacity: .35; cursor: default; }
.icon-btn.remove:hover { color: var(--warn); border-color: var(--warn); }
.rot { font-family: var(--font-mono); font-size: .78rem; }
@media (max-width: 520px) { .row { grid-template-columns: auto minmax(0, 1fr); } .actions { grid-column: 2; } }
.empty { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 20px; color: var(--muted); text-align: center; }

.slip {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 22px; display: grid; gap: 18px; position: sticky; top: calc(16px + env(safe-area-inset-top, 0px));
}
.slip h3 { font-size: 1.1rem; font-weight: 700; }
.tally { display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; margin: 0; }
.tally dt { color: var(--muted); font-size: .92rem; }
.tally dd { margin: 0; font-family: var(--font-mono); font-variant-numeric: tabular-nums; text-align: right; }
.tally .big { font-size: 1.8rem; font-family: var(--font-display); font-weight: 700; line-height: 1.1; }
.field { display: grid; gap: 8px; }
.field > label, .field legend { font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 600; padding: 0; }
fieldset.field { border: 0; margin: 0; padding: 0; min-width: 0; }
.field input[type="text"] {
  font: inherit; font-family: var(--font-mono); font-size: .9rem; width: 100%;
  padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink);
}
.seg { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 4px; }
.seg label { position: relative; cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; text-align: center; padding: 7px 2px; border-radius: 9px; font-size: .86rem; font-weight: 500; color: var(--muted); transition: background .2s, color .2s; }
.seg input:checked + span { background: var(--grad-strong); color: #fff; box-shadow: 0 6px 16px -8px #6236ff; }
.seg-note { font-size: .82rem; color: var(--muted); margin: 0; min-height: 2.6em; }
.slip .btn.primary { width: 100%; }
.status { font-size: .9rem; min-height: 1.4em; color: var(--muted); }
.status.ok { color: var(--ok); }
.status.bad { color: var(--warn); }
.bar { height: 4px; border-radius: 4px; background: var(--line); overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; background: var(--grad-strong); transition: width .2s; }
.help { font-size: .82rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 14px; }
.help code { font-family: var(--font-mono); font-size: .78rem; background: var(--bg); padding: 0 4px; border-radius: 4px; }

/* ---------- FAQ ---------- */
.faq { padding-block: 24px 80px; display: grid; gap: 24px; }
.faq header { display: grid; gap: 10px; }
.faq .eyebrow { color: var(--violet); margin: 0; }
.faq h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; letter-spacing: -.02em; }
.faq-list { display: grid; gap: 10px; max-width: 820px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 0 20px; }
.faq summary { cursor: pointer; font-weight: 600; padding: 16px 0; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--muted); }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 0 0 18px; color: var(--muted); max-width: 68ch; }
.faq code, .legal code { font-family: var(--font-mono); font-size: .85em; background: var(--surface-2); padding: 0 4px; border-radius: 4px; }
.faq a, .legal a { color: var(--blue); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: .94rem; }
.foot-grid { padding-block: 40px 28px; display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr); gap: 32px; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } .foot-brand { grid-column: 1 / -1; } }
.foot-brand { display: grid; gap: 12px; align-content: start; }
.foot-brand p { margin: 0; max-width: 46ch; }
.site-footer .who { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; }
.site-footer .who img { width: 40px; height: 40px; border-radius: 50%; }
.site-footer .who b { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; display: block; line-height: 1.2; }
.site-footer .who small { font-size: .8rem; color: var(--muted); }
.site-footer h2 { font-family: var(--font-body); font-size: .74rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--ink); margin: 0 0 12px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.site-footer nav a { color: var(--muted); text-decoration: none; }
.site-footer nav a:hover { color: var(--ink); text-decoration: underline; }
.foot-base { padding-block: 18px 28px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; font-size: .85rem; }

/* ---------- Legal pages ---------- */
.legal-top { background: var(--h-bg); color: var(--h-ink); }
.legal-top .nav a.out { color: var(--h-muted); }
.legal { padding-block: 48px 80px; max-width: 760px; }
.legal h1 { font-size: clamp(2rem, 4.5vw, 2.8rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.legal .updated { color: var(--muted); margin: 10px 0 28px; font-size: .92rem; }
.legal h2 { font-size: 1.3rem; font-weight: 700; margin: 36px 0 10px; letter-spacing: -.01em; }
.legal p, .legal li { color: var(--ink); max-width: 68ch; }
.legal ul { padding-left: 1.2em; display: grid; gap: 6px; }
.legal .callout { background: var(--surface-2); border-radius: 14px; padding: 16px 20px; margin: 20px 0; }
.legal .callout p { margin: 0; }
.legal table { width: 100%; border-collapse: collapse; font-size: .94rem; }
.legal th, .legal td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.legal th { font-weight: 600; }
.table-wrap { overflow-x: auto; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}