/* ============================================================
   TUPLE — Manuel d'utilisation
   Feuille de style : papier crème + marque Tuple (or / bleu / violet)
   ============================================================ */

/* ---- Fonts (self-hosted) ---- */
@font-face{font-family:'Space Grotesk';src:url('fonts/SpaceGrotesk-Light.woff2') format('woff2'),url('fonts/SpaceGrotesk-Light.ttf') format('truetype');font-weight:300;font-display:swap}
@font-face{font-family:'Space Grotesk';src:url('fonts/SpaceGrotesk-Regular.woff2') format('woff2'),url('fonts/SpaceGrotesk-Regular.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:'Space Grotesk';src:url('fonts/SpaceGrotesk-Medium.woff2') format('woff2'),url('fonts/SpaceGrotesk-Medium.ttf') format('truetype');font-weight:500;font-display:swap}
@font-face{font-family:'Space Grotesk';src:url('fonts/SpaceGrotesk-SemiBold.woff2') format('woff2'),url('fonts/SpaceGrotesk-SemiBold.ttf') format('truetype');font-weight:600;font-display:swap}
@font-face{font-family:'Space Grotesk';src:url('fonts/SpaceGrotesk-Bold.woff2') format('woff2'),url('fonts/SpaceGrotesk-Bold.ttf') format('truetype');font-weight:700;font-display:swap}
@font-face{font-family:'Syne';src:url('fonts/Syne-Variable.woff2') format('woff2'),url('fonts/Syne-Variable.ttf') format('truetype');font-weight:400 800;font-display:swap}
@font-face{font-family:'JetBrains Mono';src:url('fonts/JetBrainsMono-Variable.woff2') format('woff2');font-weight:400 600;font-display:swap}

:root{
  /* brand on dark (device) */
  --gold:#FFdc82; --blue:#8ECCE8; --purple:#C4A0F0;
  --dark:#232323; --dark2:#1c1c1c; --dark3:#2c2c2c;
  --cell:rgba(255,255,255,.055); --cell-bd:rgba(255,255,255,.10);
  --dtxt:#ede9e0; --dmuted:rgba(237,233,224,.45);

  /* paper */
  --paper:#faf8f2; --paper-edge:#f0ece1; --desk:#e7e2d5;
  --ink:#272320; --ink2:#5b554c; --ink3:#8a8275;
  --hair:#e3ddcf; --hair2:#d6cfbd;

  /* deepened accents for legibility on cream */
  --gold-ink:#a07918; --gold-soft:#f3e7c4;
  --blue-ink:#2f7896; --blue-soft:#dcedf4;
  --purple-ink:#6f4bb0; --purple-soft:#eae6f8;

  --sans:'Space Grotesk',system-ui,-apple-system,sans-serif;
  --display:'Syne',var(--sans);
  --mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',monospace;
}

*{box-sizing:border-box;margin:0;padding:0}

html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
.page[id]{ scroll-margin-top:24px; }
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--desk);
  line-height:1.58;
  font-size:13.2px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  padding:40px 0;
}

/* ---- Page ---- */
.page{
  position:relative;
  width:816px; min-height:1056px;
  margin:0 auto 40px;
  background:var(--paper);
  padding:78px 84px 70px;
  box-shadow:0 2px 18px rgba(40,35,28,.13);
  border-radius:3px;
  overflow:hidden;
}
.page.dark{
  background:var(--dark);
  color:var(--dtxt);
}
/* gold hairline at very top of every page (device signature) */
.page::before{
  content:'';position:absolute;top:0;left:48px;right:48px;height:2px;
  background:linear-gradient(90deg,transparent,rgba(255,220,130,.0) 8%,var(--gold-ink) 50%,rgba(255,220,130,0) 92%,transparent);
  opacity:.5;
}
.page.dark::before{
  background:linear-gradient(90deg,transparent 0%,rgba(255,220,130,.18) 25%,rgba(255,220,130,.42) 50%,rgba(255,220,130,.18) 75%,transparent 100%);
  opacity:1;
}

/* running footer */
.foot{
  position:absolute;left:84px;right:84px;bottom:36px;
  display:flex;justify-content:space-between;align-items:center;
  font-size:9.5px;letter-spacing:.06em;color:var(--ink3);
  text-transform:uppercase;
  border-top:1px solid var(--hair);padding-top:9px;
}
.foot .wm{font-family:var(--display);font-weight:800;letter-spacing:.02em;color:var(--ink2)}
.foot .wm b{color:var(--gold-ink)}

/* ============ TYPE ============ */
.kicker{
  font-size:10px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;
  color:var(--gold-ink);margin-bottom:13px;
  display:flex;align-items:center;gap:9px;
}
.kicker::before{content:'';width:18px;height:1.5px;background:var(--gold-ink);display:inline-block}
.kicker .num{color:var(--ink3);font-variant-numeric:tabular-nums}

h1.title{
  font-family:var(--display);font-weight:800;
  font-size:33px;line-height:1.06;letter-spacing:-.015em;
  margin-bottom:14px;
}
h2.sec{
  font-family:var(--display);font-weight:700;
  font-size:21px;line-height:1.12;letter-spacing:-.01em;
  margin:26px 0 11px;
}
h3.sub{
  font-family:var(--sans);font-weight:600;
  font-size:13.5px;letter-spacing:.01em;
  margin:18px 0 5px;color:var(--ink);
}
p{margin:0 0 10px;max-width:62ch;text-wrap:pretty}
p.lead{font-size:15px;line-height:1.6;color:var(--ink2);max-width:60ch;margin-bottom:14px}
strong{font-weight:600;color:var(--ink)}
em{font-style:normal;color:var(--gold-ink);font-weight:500}
.mono{font-family:var(--mono);font-size:.92em}
a{color:var(--blue-ink);text-decoration:none;border-bottom:1px solid var(--blue-soft)}
a.xref{color:var(--gold-ink);font-weight:600;border-bottom:1px solid var(--gold-soft);white-space:nowrap}
a.xref::before{content:'↳ ';font-weight:400;opacity:.6}
a.xref:hover{border-bottom-color:var(--gold-ink)}
.page.dark a.xref{color:var(--gold);border-bottom-color:rgba(255,220,130,.3)}

.note-name,.chip-key{
  font-family:var(--mono);font-weight:500;
  background:var(--gold-soft);color:var(--gold-ink);
  padding:1px 6px;border-radius:4px;font-size:.86em;white-space:nowrap;
}

/* ============ LAYOUT HELPERS ============ */
.two{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.two-37{display:grid;grid-template-columns:1.1fr 1fr;gap:30px}
.divider{height:1px;background:var(--hair);margin:22px 0;border:0}

/* ============ CALLOUT / TIP boxes ============ */
.tip{
  border-left:2.5px solid var(--gold-ink);
  background:linear-gradient(90deg,rgba(160,121,24,.06),transparent 80%);
  padding:11px 15px;margin:14px 0;border-radius:0 4px 4px 0;
}
.tip .th{font-size:9.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-ink);margin-bottom:3px}
.tip.blue{border-left-color:var(--blue-ink);background:linear-gradient(90deg,rgba(47,120,150,.07),transparent 80%)}
.tip.blue .th{color:var(--blue-ink)}
.tip.purple{border-left-color:var(--purple-ink);background:linear-gradient(90deg,rgba(111,75,176,.07),transparent 80%)}
.tip.purple .th{color:var(--purple-ink)}
.tip p{margin:0;font-size:12px;color:var(--ink2);max-width:none}

/* ============ STEP LIST ============ */
ol.steps{list-style:none;counter-reset:s;margin:6px 0 12px}
ol.steps li{
  counter-increment:s;position:relative;padding:7px 0 7px 40px;
  border-bottom:1px solid var(--hair);max-width:60ch;
}
ol.steps li:last-child{border-bottom:0}
ol.steps li::before{
  content:counter(s);position:absolute;left:0;top:7px;
  width:25px;height:25px;border-radius:50%;
  background:var(--ink);color:var(--paper);
  font-family:var(--mono);font-size:11px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
ol.steps li b{font-weight:600}

ul.ticks{list-style:none;margin:4px 0 12px}
ul.ticks li{position:relative;padding:3px 0 3px 22px;max-width:60ch;font-size:12.6px}
ul.ticks li::before{
  content:'';position:absolute;left:2px;top:10px;width:6px;height:6px;
  border-radius:50%;background:var(--gold-ink);
}

/* ============ TABLES (reference) ============ */
table.ref{width:100%;border-collapse:collapse;margin:8px 0 14px;font-size:11.7px}
table.ref th{
  text-align:left;font-size:9px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink3);padding:0 10px 6px;border-bottom:1.5px solid var(--hair2);
}
table.ref td{padding:7px 10px;border-bottom:1px solid var(--hair);vertical-align:top}
table.ref tr:last-child td{border-bottom:0}
table.ref .nm{font-weight:600;color:var(--ink);white-space:nowrap}
table.ref .ex{font-family:var(--mono);font-size:10.6px;color:var(--gold-ink);white-space:nowrap}
table.ref td.desc{color:var(--ink2);line-height:1.45}

/* ============ DEVICE FIGURES (dark recreations) ============ */
.fig{margin:14px 0 8px}
.fig-cap{font-size:10px;color:var(--ink3);letter-spacing:.04em;margin-top:9px;display:flex;gap:7px}
.fig-cap b{color:var(--ink2);font-weight:600;white-space:nowrap}

/* ============ REAL SCREENSHOTS (captured from the device UI) ============ */
.shot{display:block;width:100%;height:auto;border-radius:8px;border:1px solid #3a3a3a;
  background:#232323;box-shadow:0 2px 10px rgba(0,0,0,.18);
  -webkit-print-color-adjust:exact;print-color-adjust:exact}
.shot-row{display:grid;grid-template-columns:1fr 360px;gap:20px;align-items:start;margin-top:16px}
.shot-row .fig{margin:0}

.device{
  background:var(--dark);border:1px solid #3a3a3a;border-radius:7px;
  padding:9px;position:relative;overflow:hidden;
  font-family:var(--sans);color:var(--dtxt);
  box-shadow:0 6px 22px rgba(40,35,28,.16);
}
.device::before{
  content:'';position:absolute;top:0;left:14px;right:14px;height:2px;
  background:linear-gradient(90deg,transparent,rgba(255,220,130,.28) 50%,transparent);
}
.dev-title{
  display:flex;align-items:center;gap:6px;font-size:9px;color:var(--dmuted);
  letter-spacing:.04em;margin-bottom:8px;padding-left:2px;
}
.dev-title .dot{width:8px;height:8px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 2px rgba(255,220,130,.18)}

/* config panel */
.dev-row{display:flex;gap:9px}
.cfg{width:148px;flex:0 0 148px;display:flex;flex-direction:column;gap:6px}
.dlbl{font-size:7.5px;letter-spacing:.14em;color:rgba(255,220,130,.42);text-transform:uppercase;font-weight:600;margin-bottom:1px}
.crow{display:flex;gap:5px}
.csel{
  flex:1;background:var(--cell);border:1px solid var(--cell-bd);border-radius:5px;
  padding:5px 8px;display:flex;align-items:center;gap:4px;font-size:9.5px;
}
.csel .cl{color:var(--dmuted);font-weight:500}
.csel .cv{color:var(--gold);font-weight:600;margin-left:auto;font-family:var(--mono);font-size:9px}
.csel::after{content:'▾';color:rgba(237,233,224,.3);font-size:7px;margin-left:2px}
.sync{
  width:26px;flex:0 0 26px;display:flex;align-items:center;justify-content:center;
  background:var(--cell);border:1px solid var(--cell-bd);border-radius:5px;
  color:var(--gold);font-size:12px;
}
.oct{display:flex;gap:3px}
.oct span{
  flex:1;text-align:center;background:var(--cell);border:1px solid var(--cell-bd);
  border-radius:4px;padding:4px 0;font-size:9px;font-family:var(--mono);color:var(--dmuted);
}
.oct span.on{background:rgba(255,220,130,.16);border-color:rgba(255,220,130,.4);color:var(--gold);font-weight:600}
.toggle{
  background:var(--cell);border:1px solid var(--cell-bd);border-radius:5px;
  padding:6px 9px;display:flex;justify-content:space-between;align-items:center;font-size:10px;
}
.toggle .v{font-size:9px;font-weight:600;font-family:var(--mono)}
.toggle.on{background:rgba(255,220,130,.13);border-color:rgba(255,220,130,.3)}
.toggle.on .v{color:var(--gold)}
.toggle.off .v{color:var(--dmuted)}

.vsep{width:1px;align-self:stretch;background:linear-gradient(to bottom,transparent,rgba(255,255,255,.12) 30%,rgba(255,255,255,.12) 70%,transparent)}

/* monitor */
.mon{width:120px;flex:0 0 120px;display:flex;flex-direction:column;gap:7px}
.mon-notes{font-family:var(--mono);color:var(--gold);font-size:11px;letter-spacing:.04em;min-height:16px}
.kbd{display:flex;height:34px;border-radius:4px;overflow:hidden;border:1px solid #111;background:#f2efe6;position:relative}
.kbd .wk{flex:1;border-right:1px solid #cfc9bb;position:relative}
.kbd .wk.act{background:rgba(142,204,232,.55)}
.kbd .bk{position:absolute;top:0;width:8px;height:60%;background:#1a1a1a;border-radius:0 0 2px 2px;transform:translateX(-50%);z-index:2}
.kbd .bk.act{background:var(--blue)}
.hold{
  background:var(--cell);border:1px solid var(--cell-bd);border-radius:5px;text-align:center;
  padding:5px;font-size:9px;letter-spacing:.1em;color:var(--dmuted);font-weight:600;
}
.hold.on{background:rgba(142,204,232,.14);border-color:rgba(142,204,232,.34);color:var(--blue)}

/* grid (full window) */
.grid{display:grid;grid-template-columns:repeat(8,1fr);gap:3px;font-size:9px}
.gh{
  text-align:center;font-size:7.5px;font-weight:700;letter-spacing:.04em;
  padding:4px 1px;border-radius:3px;text-transform:uppercase;
}
.gcell{
  text-align:center;padding:5px 1px;border-radius:4px;font-family:var(--mono);font-size:9px;
  background:var(--cell);border:1px solid var(--cell-bd);color:rgba(237,233,224,.82);
}
.gcell.empty{background:transparent;border-color:transparent}
.gcell.act{background:#efe7d4;border-color:var(--gold);color:#232323;font-weight:700;box-shadow:0 0 0 1px var(--gold)}
.gcell.bor{background:rgba(196,160,240,.13);border-color:rgba(196,160,240,.3);color:var(--purple)}

/* ===== Push 2 hardware mock ===== */
.push2{position:relative;background:linear-gradient(180deg,#3b3b3e 0%,#2d2d2f 58%,#262628 100%);border:1px solid #1a1a1c;border-radius:13px;padding:11px 12px 17px;box-shadow:0 12px 30px rgba(40,35,28,.26),inset 0 1px 0 rgba(255,255,255,.07);font-family:var(--sans)}
.push2 .pbrand{position:absolute;bottom:6px;right:14px;font-size:7px;letter-spacing:.26em;color:rgba(255,255,255,.32);font-weight:700;text-transform:uppercase}
.push2-encoders{display:grid;grid-template-columns:repeat(8,1fr);gap:5px;padding:0 1px 9px}
.push2-encoders .enc{height:14px;width:14px;justify-self:center;border-radius:50%;background:radial-gradient(circle at 50% 32%,#5a5a5e,#2a2a2c 80%);box-shadow:inset 0 1px 1px rgba(255,255,255,.22),0 1px 2px rgba(0,0,0,.45);position:relative}
.push2-encoders .enc::after{content:'';position:absolute;top:2px;left:50%;width:1.6px;height:4px;background:rgba(255,255,255,.5);transform:translateX(-50%);border-radius:1px}
.push2-screen{background:#0b0b0d;border-radius:5px;padding:7px 9px;margin-bottom:9px;border:1px solid #000;box-shadow:inset 0 1px 5px rgba(0,0,0,.65)}
.push2-screen .ps-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px}
.push2-screen .ps-name{font-family:var(--display);font-weight:700;color:var(--gold);font-size:12px;letter-spacing:.01em}
.push2-screen .ps-chord{font-family:var(--mono);font-size:9.5px;color:var(--blue);letter-spacing:.02em}
.push2-screen .ps-degrees{display:grid;grid-template-columns:repeat(8,1fr);gap:3px}
.push2-screen .ps-degrees span{text-align:center;font-size:7.5px;font-weight:700;letter-spacing:.03em;padding:2px 0;border-radius:2px;background:rgba(255,255,255,.05)}
.push2-body{display:flex;gap:7px}
.push2-strip{flex:0 0 7px;border-radius:4px;background:linear-gradient(180deg,#45454a,#202022);box-shadow:inset 0 0 4px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.08)}
.push2-pads{flex:1;display:grid;grid-template-columns:repeat(8,1fr);gap:4px;background:#161617;padding:5px;border-radius:7px;border:1px solid #0c0c0d}
.push2-pads .pad{aspect-ratio:1;border-radius:4px;background:#242426;box-shadow:inset 0 0 0 1px rgba(255,255,255,.025),inset 0 1px 1px rgba(0,0,0,.35)}
.push2-pads .pad.lit{box-shadow:inset 0 0 0 1px rgba(255,255,255,.18),0 0 5px rgba(255,255,255,.10)}
.push2-pads .pad.active{box-shadow:inset 0 0 0 2px #fff,0 0 9px rgba(255,255,255,.5)}

/* numbered callouts */
.callout{
  position:absolute;width:19px;height:19px;border-radius:50%;
  background:var(--gold);color:#232323;
  font-family:var(--mono);font-size:10px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 1px 5px rgba(0,0,0,.35);z-index:5;
}
.legend{display:grid;grid-template-columns:1fr 1fr;gap:5px 22px;margin-top:14px}
.legend .li{display:flex;gap:9px;align-items:baseline;font-size:11.5px;line-height:1.4}
.legend .ln{
  flex:0 0 18px;height:18px;border-radius:50%;background:var(--ink);color:var(--paper);
  font-family:var(--mono);font-size:10px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
.legend .lt b{font-weight:600}
.legend .lt span{color:var(--ink2)}

/* color-logic swatches */
.spectrum{display:flex;gap:4px;margin:10px 0}
.spectrum .sw{flex:1;height:30px;border-radius:5px;display:flex;align-items:flex-end;justify-content:center;padding-bottom:3px;font-family:var(--mono);font-size:8.5px;font-weight:600;color:rgba(0,0,0,.55)}

/* mini swatch dot */
.dot-i{display:inline-block;width:9px;height:9px;border-radius:2px;vertical-align:middle;margin-right:5px}

/* ============ COVER ============ */
.cover{display:flex;flex-direction:column;justify-content:space-between;padding:84px 84px 74px}
.cover .brandrow{display:flex;align-items:center;gap:11px;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--dmuted)}
.cover .wordmark{
  font-family:var(--display);font-weight:800;font-size:118px;line-height:.9;
  letter-spacing:-.03em;color:var(--gold);margin:0 0 6px -4px;
}
.cover .tag{font-family:var(--display);font-weight:600;font-size:25px;line-height:1.25;color:var(--dtxt);max-width:16ch;margin-bottom:18px}
.cover .sub{font-size:13px;color:var(--dmuted);max-width:46ch;line-height:1.6}
.cover .metaline{display:flex;gap:30px;margin-top:24px;font-size:11px;color:var(--dmuted)}
.cover .metaline b{display:block;color:var(--dtxt);font-weight:600;font-size:12.5px;margin-top:2px;letter-spacing:0}
.cover-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:5px;margin:30px 0}
.cover-grid .cg{height:26px;border-radius:4px;background:var(--cell);border:1px solid var(--cell-bd)}

/* TOC */
.toc{list-style:none;margin-top:6px}
.toc li{display:flex;align-items:baseline;gap:11px;padding:8px 0;border-bottom:1px solid var(--hair)}
.toc li a{display:flex;align-items:baseline;gap:11px;width:100%;text-decoration:none;border:0;color:inherit;transition:opacity .12s}
.toc li a:hover{opacity:1}
.toc li a:hover .tt{color:var(--gold-ink)}
.toc li a:hover .tl{border-bottom-color:var(--gold-ink)}
.toc .tn{font-family:var(--mono);font-size:11px;color:var(--gold-ink);font-weight:600;flex:0 0 26px}
.toc .tt{font-weight:500;color:var(--ink);transition:color .12s}
.toc .tl{flex:1;border-bottom:1px dotted var(--hair2);transform:translateY(-3px);transition:border-color .12s}
.toc .tp{font-family:var(--mono);font-size:11px;color:var(--ink3)}
.toc .tt small{display:block;font-size:10.5px;color:var(--ink3);font-weight:400;letter-spacing:0}



/* spec strip on credits */
.credit-spec{display:grid;grid-template-columns:1fr 1fr;gap:8px 34px;margin-top:12px}
.credit-spec .cs{padding:6px 0;border-top:1px solid rgba(237,233,224,.14)}
.credit-spec .csl{font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:var(--dmuted);margin-bottom:3px}
.credit-spec .csv{font-size:13px;color:var(--dtxt)}
.credit-spec .csv a{color:var(--blue);border-bottom-color:rgba(142,204,232,.3)}

/* ============ PRINT ============ */
@media print{
  @page{ size:Letter; margin:0; }
  body{background:#fff;padding:0}
  .page{
    width:auto;min-height:auto;margin:0;border-radius:0;box-shadow:none;
    padding:64px 70px;
    page-break-after:always;break-after:page;
  }
  .page:last-child{page-break-after:auto;break-after:auto}
  .page,.page *{ -webkit-print-color-adjust:exact;print-color-adjust:exact; }
  .device,.push2,.push2 *,.tip,.note-name,.chip-key,.spectrum .sw,.callout,.gcell,.gh,
  .legend .ln,.cover .wordmark,.page.dark{ -webkit-print-color-adjust:exact;print-color-adjust:exact; }
  h2.sec,h3.sub,table.ref,ol.steps li,ul.ticks li,.tip,.fig,.legend .li,.toc li{break-inside:avoid}
}