/* Layout: header bar, tool as the hero workspace, then reading column for guides; footer with legal links */
:root {
  --bg: #eef0ee; --panel: #ffffff; --ink: #1c2321; --muted: #5d6a66; --line: #d3d9d6;
  --wave: #9aa8a3; --sel: #d63f28; --sel-soft: rgba(214,63,40,.13); --done: #2f8f6b; --tint: #e4e8e6;
  --display: "Bricolage Grotesque", "Avenir Next", "Segoe UI", sans-serif;
  --body: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --bg: #151918; --panel: #1e2422; --ink: #e8ecea; --muted: #94a19c; --line: #323b38;
  --wave: #5f6e69; --sel: #ff6a4f; --sel-soft: rgba(255,106,79,.16); --done: #4fc497; --tint: #1a1f1d; color-scheme: dark } }
:root[data-theme="dark"] {
  --bg: #151918; --panel: #1e2422; --ink: #e8ecea; --muted: #94a19c; --line: #323b38;
  --wave: #5f6e69; --sel: #ff6a4f; --sel-soft: rgba(255,106,79,.16); --done: #4fc497; --tint: #1a1f1d; color-scheme: dark }

* { box-sizing: border-box }
[hidden] { display: none !important }
html { -webkit-text-size-adjust: 100% }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--body) }
a { color: inherit; text-decoration-color: var(--sel); text-underline-offset: 3px }
a:hover { color: var(--sel) }
.gut { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)) }
.wrap { max-width: 1000px; margin: 0 auto }

/* header */
.site-head { border-bottom: 1px solid var(--line); background: var(--panel) }
.site-head .wrap { display: flex; align-items: center; gap: 18px; padding-block: 12px; flex-wrap: wrap }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 21px/1 var(--display); letter-spacing: -.01em }
.brand svg { width: 28px; height: 28px; flex: none }
.brand .acc { color: var(--sel) }
.nav { display: flex; gap: 16px; margin-left: auto; align-items: center; flex-wrap: wrap; font-size: 15px }
.nav a { text-decoration: none; color: var(--muted) }
.nav a:hover, .nav a[aria-current] { color: var(--ink) }
.lang-switch { display: flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; font: 500 13px var(--mono) }
.lang-switch a, .lang-switch span { padding: 4px 9px; text-decoration: none }
.lang-switch span { background: var(--ink); color: var(--panel) }
.lang-suggest { background: var(--tint); border-bottom: 1px solid var(--line); font-size: 14px }
.lang-suggest .wrap { display: flex; gap: 14px; align-items: center; padding-block: 8px; flex-wrap: wrap }
.lang-suggest button { padding: 3px 10px; font-size: 13px }

/* hero + tool */
.hero { padding-block: 34px 6px }
.hero h1 { font: 700 clamp(30px, 5vw, 46px)/1.05 var(--display); margin: 0 0 10px; letter-spacing: -.02em; text-wrap: balance; max-width: 18ch }
.hero h1 em { font-style: normal; color: var(--sel) }
.hero p { margin: 0; color: var(--muted); font-size: 18px; max-width: 60ch }
.badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; padding: 0; list-style: none }
.badges li { font: 500 13px var(--mono); padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; background: var(--panel) }
.badges li::before { content: "✓ "; color: var(--done) }

.tool { display: grid; gap: 16px; padding-block: 22px 10px }
.stack { display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr) }
.file-info { font: 13px var(--mono); color: var(--muted); min-width: 0; overflow-wrap: anywhere }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 18px; display: grid; gap: 14px; min-width: 0 }
.drop { border: 2px dashed var(--line); border-radius: 10px; padding: 44px 16px; text-align: center; cursor: pointer; color: var(--muted); background: var(--panel) }
.drop.small { padding: 16px }
.drop.over, .drop:hover { border-color: var(--sel); color: var(--ink) }
.drop strong { display: block; font: 600 19px var(--display); color: var(--ink); margin-bottom: 4px }
.wave-box { position: relative; height: 180px; border-radius: 6px; background: var(--bg); overflow: hidden; touch-action: none; cursor: crosshair }
.wave-box canvas { display: block; width: 100%; height: 100% }
.ruler { display: flex; justify-content: space-between; font: 12px var(--mono); color: var(--muted); font-variant-numeric: tabular-nums }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end }
.field { display: grid; gap: 4px }
.field label, .lbl { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted) }
input[type=text], select { font: 15px var(--mono); padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--ink); font-variant-numeric: tabular-nums; max-width: 100% }
.t { width: 120px }
.name { width: 100%; min-width: 0 }
.grow { flex: 1 1 260px; min-width: 0 }
button { font: 500 14px var(--body); padding: 9px 14px; border-radius: 6px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); cursor: pointer; font-variant-numeric: tabular-nums }
button:hover:not(:disabled) { border-color: var(--ink) }
button:disabled { opacity: .4; cursor: default }
button:focus-visible, input:focus-visible, select:focus-visible, .drop:focus-visible, a:focus-visible { outline: 2px solid var(--sel); outline-offset: 2px }
button.primary { background: var(--sel); border-color: var(--sel); color: #fff; font-weight: 600 }
.dur { font: 13px var(--mono); color: var(--muted); font-variant-numeric: tabular-nums; align-self: center }
.transport { display: grid; gap: 8px; padding: 12px; border-radius: 8px; background: var(--bg) }
.transport .row { align-items: center }
.transport button { padding: 7px 11px; font-family: var(--mono); font-size: 13px }
.transport button.big { min-width: 100px; font-family: var(--body); font-weight: 600; background: var(--ink); color: var(--bg); border-color: var(--ink) }
.scrub { display: flex; gap: 10px; align-items: center; flex-wrap: wrap }
.scrub input { flex: 1 1 200px; min-width: 0; accent-color: var(--sel) }
.pos { font: 13px var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap }
.pos b { font-weight: 500 }
.pos span { color: var(--muted) }
h2.tool-h { font: 600 17px var(--display); margin: 0 }
.status { font-size: 14px; color: var(--muted); min-height: 1.5em }
.status.err { color: var(--sel) }
.bar { height: 4px; background: var(--line); border-radius: 2px; overflow: hidden }
.bar div { height: 100%; width: 0; background: var(--sel); transition: width .1s }
.help { font-size: 14px; color: var(--muted); margin: 0 }
.check { display: flex; gap: 8px; align-items: flex-start; font-size: 14px }
.check input { accent-color: var(--sel); margin-top: 4px }
kbd { font: 12px var(--mono); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; padding: 0 5px; background: var(--panel) }
.folder { font: 13px var(--mono); color: var(--muted); align-self: center; overflow-wrap: anywhere; min-width: 0 }
.folder.on { color: var(--done) }
.scroll-x { overflow-x: auto }
.blocks { width: 100%; border-collapse: collapse; font-size: 14px }
.blocks th { text-align: left; font-weight: 500; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding: 6px 8px; border-bottom: 1px solid var(--line) }
.blocks td { padding: 7px 8px; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums }
.blocks td.n { font-family: var(--mono); font-size: 13px; overflow-wrap: anywhere }
.blocks td.n::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 2px; background: var(--done); margin-right: 8px }
.blocks td.tm { font-family: var(--mono); font-size: 13px; color: var(--muted); white-space: nowrap }
.blocks td button { padding: 4px 9px; font-size: 12px }
.empty { color: var(--muted); font-size: 14px; margin: 0 }

/* content sections */
.section { padding-block: 40px; border-top: 1px solid var(--line) }
.section h2 { font: 700 28px/1.15 var(--display); margin: 0 0 18px; letter-spacing: -.01em; text-wrap: balance }
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); counter-reset: s }
.steps li { counter-increment: s; display: grid; gap: 4px; align-content: start }
.steps li::before { content: counter(s); font: 700 15px var(--mono); color: var(--sel) }
.steps b { font-family: var(--display); font-size: 17px }
.steps p { margin: 0; color: var(--muted); font-size: 15px }
.features { display: grid; gap: 22px 32px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)) }
.features h3 { font: 600 18px var(--display); margin: 0 0 4px }
.features p { margin: 0; color: var(--muted); font-size: 15px }
.faq details { border-bottom: 1px solid var(--line); padding-block: 12px }
.faq summary { cursor: pointer; font-weight: 500; font-size: 17px }
.faq details p { margin: 8px 0 0; color: var(--muted); max-width: 70ch }
.cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)) }
.card { display: grid; gap: 6px; align-content: start; padding: 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); text-decoration: none }
.card b { font: 600 18px/1.25 var(--display) }
.card span { color: var(--muted); font-size: 15px }
.card:hover { border-color: var(--sel); color: inherit }

/* article */
.article { padding-block: 36px 24px }
.article > * { max-width: 68ch }
.crumbs { font: 13px var(--mono); color: var(--muted); margin-bottom: 14px }
.crumbs a { color: var(--muted) }
.article h1 { font: 700 clamp(28px, 4.4vw, 40px)/1.1 var(--display); margin: 0 0 12px; letter-spacing: -.02em; text-wrap: balance }
.article .lede { font-size: 19px; color: var(--muted); margin: 0 0 20px }
.article .meta { font: 13px var(--mono); color: var(--muted); margin-bottom: 28px }
.article h2 { font: 700 23px/1.2 var(--display); margin: 34px 0 10px; text-wrap: balance }
.article h3 { font: 600 18px var(--display); margin: 24px 0 6px }
.article p, .article li { font-size: 17px }
.article ul, .article ol { padding-left: 1.3em }
.article li { margin-bottom: 6px }
.article .note { border-left: 3px solid var(--done); background: var(--panel); padding: 12px 16px; border-radius: 0 8px 8px 0 }
.article table { border-collapse: collapse; width: 100%; font-size: 15px; margin: 8px 0 }
.article th, .article td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top }
.article th { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 500 }
.article .cta { display: inline-block; margin-top: 8px; padding: 11px 18px; border-radius: 8px; background: var(--sel); color: #fff; text-decoration: none; font-weight: 600 }
.article .cta:hover { color: #fff; filter: brightness(1.08) }

/* ads: reserved space, only rendered when an AdSense client id is configured */
.ad { margin-block: 24px; min-height: 100px; display: grid; place-items: center; text-align: center }
.ad::before { content: attr(data-label); display: block; font: 11px var(--mono); color: var(--muted); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 4px }

/* footer */
.site-foot { border-top: 1px solid var(--line); background: var(--panel); margin-top: 40px; font-size: 14px; color: var(--muted) }
.site-foot .wrap { display: grid; gap: 12px; padding-block: 26px }
.foot-links { display: flex; gap: 16px; flex-wrap: wrap }
.foot-links a { color: var(--ink); text-decoration: none }
.foot-links a:hover { color: var(--sel) }
.site-foot p { margin: 0; max-width: 80ch }
.contact-mail { font-family: var(--mono); user-select: all }

/* touch screens: the keyboard hints don't apply */
.help-touch { display: none }
@media (pointer: coarse) {
  .help-kbd { display: none }
  .help-touch { display: block }
}

/* phones: the editor becomes a stack of full-width, thumb-sized controls */
@media (max-width: 560px) {
  .nav { margin-left: 0; width: 100% }
  .hero { padding-block: 22px 0 }
  .hero p { font-size: 16px }
  .tool { padding-block: 14px 6px }
  .drop { padding: 28px 14px }
  .panel { padding: 14px; gap: 12px }
  .wave-box { height: 150px }
  input[type=text], select { font-size: 16px } /* below 16px iOS zooms the page on focus */
  button { min-height: 44px }
  .marks { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 10px; align-items: end }
  .marks .t { width: 100% }
  .marks .dur { grid-column: 1 / -1; justify-self: center }
  .transport { padding: 10px }
  .pos { white-space: normal; text-align: center; width: 100% }
  .pos #posAbs { display: block }
  .scrub input { flex-basis: 100%; height: 28px }
  .keys { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px }
  .keys button { padding: 7px 0; min-width: 0 }
  .keys #btnPlay { grid-column: 1 / -1; order: -1; min-height: 52px; font-size: 17px }
  .keys #btnHome { order: 0 } .keys #btnB5 { order: 1 } .keys #btnB1 { order: 2 } .keys #btnF1 { order: 3 } .keys #btnF5 { order: 4 }
  .keys #btnEnd { grid-column: 1 / -1; order: 5 }
  .edits { display: grid; grid-template-columns: 1fr 1fr; gap: 8px }
  .edits #btnKeep { grid-column: 1 / -1 }
  .saves { display: grid; grid-template-columns: 1fr; gap: 8px }
  .saves button.primary { min-height: 52px; font-size: 16px }
  #folderRow { display: grid; gap: 6px }
  .blocks th:nth-child(4), .blocks td:nth-child(4) { display: none }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important } }