/* ============================================================
   AlphaMerge — spec sheet
   The studio as its own technical document.
   ============================================================ */

/* --- tokens: paper (default) ------------------------------- */
:root{
  --paper:      #F6F4EF;
  --paper-sunk: #EEEBE2;
  --panel:      #FFFFFF;
  --ink:        #15140F;
  --ink-soft:   #47443A;
  --muted:      #85816F;
  --rule:       #DCD8CB;
  --rule-hard:  #C0BBA9;
  --signal:     #C93F0B;
  --signal-ink: #FFFFFF;
  --ok:         #2F7D52;
  --shadow:     0 1px 0 rgba(21,20,15,.04), 0 8px 28px -18px rgba(21,20,15,.35);

  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "Helvetica Neue", Arial, sans-serif;

  --rail-w: 232px;
  --gutter: clamp(20px, 5vw, 64px);
  --measure: 68ch;
  --bar-h: 34px;
}

/* --- tokens: dark paper ------------------------------------ */
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:      #131209;
    --paper-sunk: #0C0B05;
    --panel:      #1B1A11;
    --ink:        #F1EEE2;
    --ink-soft:   #C4C0B0;
    --muted:      #8B8674;
    --rule:       #2E2C20;
    --rule-hard:  #45422F;
    --signal:     #FF6B35;
    --signal-ink: #131209;
    --ok:         #4FBF85;
    --shadow:     0 1px 0 rgba(0,0,0,.4), 0 10px 34px -20px rgba(0,0,0,.9);
  }
}
:root[data-theme="dark"]{
  --paper:      #131209;
  --paper-sunk: #0C0B05;
  --panel:      #1B1A11;
  --ink:        #F1EEE2;
  --ink-soft:   #C4C0B0;
  --muted:      #8B8674;
  --rule:       #2E2C20;
  --rule-hard:  #45422F;
  --signal:     #FF6B35;
  --signal-ink: #131209;
  --ok:         #4FBF85;
  --shadow:     0 1px 0 rgba(0,0,0,.4), 0 10px 34px -20px rgba(0,0,0,.9);
}

/* --- reset ------------------------------------------------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.01ms !important; transition-duration:.01ms !important; }
}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  padding-bottom:var(--bar-h);
}
img{ max-width:100%; display:block; }
a{ color:inherit; }
h1,h2,h3,h4{ margin:0; font-weight:600; line-height:1.15; letter-spacing:-.02em; }
p{ margin:0 0 1em; }
ul,ol{ margin:0 0 1em; padding-left:1.15em; }
li{ margin:.3em 0; }
hr{ border:0; border-top:1px solid var(--rule); margin:0; }

/* --- shared bits ------------------------------------------- */
.mono{ font-family:var(--mono); }
.tag{
  font-family:var(--mono); font-size:11px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--muted);
}
.rule{ border-top:1px solid var(--rule); }
.rule-hard{ border-top:2px solid var(--ink); }
.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0;
}
:focus-visible{ outline:2px solid var(--signal); outline-offset:3px; border-radius:2px; }

/* --- shell ------------------------------------------------- */
.shell{
  display:grid;
  grid-template-columns:var(--rail-w) minmax(0,1fr);
  gap:0 clamp(28px,5vw,72px);
  max-width:1400px;
  margin:0 auto;
  padding:0 var(--gutter);
}
.col{ min-width:0; padding-bottom:120px; }

/* --- contents rail ----------------------------------------- */
.rail{
  position:sticky; top:0; align-self:start;
  height:100vh; padding:28px 0 40px;
  display:flex; flex-direction:column; gap:22px;
  border-right:1px solid var(--rule);
  margin-right:-1px;
}
.rail__brand{
  font-family:var(--mono); font-size:12px; letter-spacing:.2em;
  text-transform:uppercase; text-decoration:none; color:var(--ink);
  display:flex; align-items:center; gap:8px;
}
.rail__mark{
  width:9px; height:9px; background:var(--signal);
  display:inline-block; flex:none;
}
.rail__label{
  font-family:var(--mono); font-size:10px; letter-spacing:.18em;
  text-transform:uppercase; color:var(--muted);
  padding-bottom:6px; border-bottom:1px solid var(--rule);
}
.toc{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; }
.toc a{
  display:grid; grid-template-columns:2.2em 1fr; gap:6px;
  padding:5px 12px 5px 0;
  font-family:var(--mono); font-size:12px; letter-spacing:.04em;
  text-decoration:none; color:var(--muted);
  border-left:2px solid transparent; padding-left:10px;
  transition:color .15s, border-color .15s;
}
.toc a:hover{ color:var(--ink); }
.toc a.is-active{ color:var(--ink); border-left-color:var(--signal); }
.toc a.is-active .toc__n{ color:var(--signal); }
.toc__n{ color:var(--rule-hard); font-variant-numeric:tabular-nums; }
.rail__foot{
  margin-top:auto; display:flex; flex-direction:column; gap:10px;
  font-family:var(--mono); font-size:11px; color:var(--muted);
}
.rail__foot a{ color:var(--muted); text-decoration:none; }
.rail__foot a:hover{ color:var(--signal); }

.theme-toggle{
  font-family:var(--mono); font-size:11px; letter-spacing:.1em;
  text-transform:uppercase; color:var(--muted);
  background:none; border:1px solid var(--rule); border-radius:2px;
  padding:5px 9px; cursor:pointer; text-align:left; width:max-content;
}
.theme-toggle:hover{ color:var(--ink); border-color:var(--rule-hard); }

/* --- masthead ---------------------------------------------- */
.masthead{ padding:64px 0 0; }
.masthead__eyebrow{
  display:flex; flex-wrap:wrap; gap:10px 18px; align-items:baseline;
  font-family:var(--mono); font-size:11px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--muted);
  padding-bottom:14px;
}
.masthead h1{
  font-size:clamp(44px,8.5vw,104px);
  letter-spacing:-.045em; line-height:.92; margin:0;
  text-transform:uppercase; font-weight:650;
}
.masthead__sub{
  font-size:clamp(17px,2.1vw,22px); color:var(--ink-soft);
  max-width:46ch; margin:22px 0 0; line-height:1.45; letter-spacing:-.01em;
}
.masthead__rule{ margin:34px 0 0; border-top:2px solid var(--ink); }

/* meta grid under the masthead */
.meta{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  border-bottom:1px solid var(--rule);
}
.meta__cell{
  padding:14px 16px 16px 0; border-right:1px solid var(--rule);
}
.meta__cell:last-child{ border-right:0; }
.meta__k{
  font-family:var(--mono); font-size:10px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--muted); display:block; margin-bottom:5px;
}
.meta__v{ font-family:var(--mono); font-size:13px; color:var(--ink); }
.meta__v a{ color:var(--ink); text-decoration:none; border-bottom:1px solid var(--rule-hard); }
.meta__v a:hover{ color:var(--signal); border-color:var(--signal); }

/* --- sections ---------------------------------------------- */
.section{ padding:74px 0 0; scroll-margin-top:24px; }
.section__head{
  display:grid; grid-template-columns:3.4em 1fr; gap:0 14px;
  align-items:baseline; padding-bottom:18px;
  border-bottom:2px solid var(--ink);
  margin-bottom:28px;
}
.section__n{
  font-family:var(--mono); font-size:12px; color:var(--signal);
  letter-spacing:.1em; font-variant-numeric:tabular-nums;
}
.section__title{
  font-size:clamp(21px,2.6vw,28px); text-transform:uppercase;
  letter-spacing:-.01em; font-weight:640;
}
.section__note{
  grid-column:2; font-family:var(--mono); font-size:11.5px;
  color:var(--muted); letter-spacing:.04em; margin-top:7px;
}
.prose{ max-width:var(--measure); }
.prose p{ color:var(--ink-soft); }
.prose strong{ color:var(--ink); font-weight:620; }
.lede{ font-size:19px; color:var(--ink) !important; letter-spacing:-.011em; }

/* --- dotted-leader spec table ------------------------------ */
.spec{ margin:0 0 26px; max-width:var(--measure); }
.spec__row{
  display:flex; align-items:baseline; gap:8px;
  padding:7px 0; border-bottom:1px solid transparent;
  font-family:var(--mono); font-size:13px;
}
.spec__k{ color:var(--muted); white-space:nowrap; letter-spacing:.03em; }
.spec__lead{
  flex:1 1 auto; min-width:14px;
  border-bottom:1px dotted var(--rule-hard);
  transform:translateY(-3px);
}
.spec__v{ color:var(--ink); text-align:right; }
.spec__v a{ color:var(--ink); text-decoration:none; border-bottom:1px solid var(--rule-hard); }
.spec__v a:hover{ color:var(--signal); border-color:var(--signal); }
.spec__v .num{ font-variant-numeric:tabular-nums; }

/* --- capability grid --------------------------------------- */
.grid{
  display:grid; gap:1px; background:var(--rule);
  border:1px solid var(--rule); margin:0 0 8px;
}
.grid--3{ grid-template-columns:repeat(auto-fit,minmax(232px,1fr)); }
.cell{ background:var(--paper); padding:20px 20px 22px; }
.cell__n{
  font-family:var(--mono); font-size:10px; letter-spacing:.16em;
  color:var(--signal); display:block; margin-bottom:9px;
}
.cell h3{ font-size:15px; margin:0 0 7px; letter-spacing:-.005em; }
.cell p{ font-size:13.5px; color:var(--muted); margin:0; line-height:1.55; }

/* --- work entries ------------------------------------------ */
.entry{
  display:grid; grid-template-columns:minmax(0,1fr) minmax(0,340px);
  gap:8px 44px; padding:30px 0; border-bottom:1px solid var(--rule);
  align-items:start;
}
.entry:first-of-type{ border-top:1px solid var(--rule); }
.entry__head{ display:flex; flex-wrap:wrap; align-items:baseline; gap:10px 14px; margin-bottom:10px; }
.entry__name{ font-size:23px; letter-spacing:-.022em; font-weight:640; }
.entry__name a{ text-decoration:none; }
.entry__name a:hover{ color:var(--signal); }
.entry__kind{
  font-family:var(--mono); font-size:10px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--muted);
  border:1px solid var(--rule); border-radius:2px; padding:2px 7px;
}
.entry__body{ font-size:14.5px; color:var(--ink-soft); margin:0 0 14px; line-height:1.6; max-width:56ch; }
.entry__links{ display:flex; flex-wrap:wrap; gap:8px 16px; }
.entry__links a{
  font-family:var(--mono); font-size:11.5px; letter-spacing:.06em;
  text-transform:uppercase; text-decoration:none; color:var(--signal);
  display:inline-flex; align-items:center; gap:6px;
}
.entry__links a:hover{ text-decoration:underline; text-underline-offset:3px; }
.entry__links .is-muted{ color:var(--muted); }
.entry__aside{ padding-top:4px; }

/* status pill */
.status{
  font-family:var(--mono); font-size:10px; letter-spacing:.14em;
  text-transform:uppercase; display:inline-flex; align-items:center; gap:6px;
  color:var(--muted);
}
.status::before{
  content:""; width:6px; height:6px; border-radius:50%;
  background:var(--muted); flex:none;
}
.status--live{ color:var(--ok); }
.status--live::before{ background:var(--ok); }
.status--build{ color:var(--signal); }
.status--build::before{ background:var(--signal); }

/* --- stack list -------------------------------------------- */
.stack{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(184px,1fr));
  gap:1px; background:var(--rule); border:1px solid var(--rule);
}
.stack__group{ background:var(--paper); padding:18px 20px 20px; }
.stack__group h4{
  font-family:var(--mono); font-size:10px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--signal); margin:0 0 10px; font-weight:500;
}
.stack__group ul{ list-style:none; margin:0; padding:0; }
.stack__group li{
  font-family:var(--mono); font-size:12.5px; color:var(--ink-soft);
  padding:3px 0; margin:0;
}

/* --- team -------------------------------------------------- */
.team{ display:grid; grid-template-columns:repeat(auto-fit,minmax(268px,1fr)); gap:1px; background:var(--rule); border:1px solid var(--rule); }
.person{ background:var(--paper); padding:24px; }
.person__name{ font-size:19px; letter-spacing:-.02em; margin:0 0 3px; }
.person__role{ font-family:var(--mono); font-size:11px; letter-spacing:.13em; text-transform:uppercase; color:var(--signal); margin:0 0 12px; }
.person p{ font-size:13.5px; color:var(--muted); margin:0 0 14px; line-height:1.55; }
.person a{
  font-family:var(--mono); font-size:11.5px; letter-spacing:.06em;
  text-transform:uppercase; color:var(--ink); text-decoration:none;
  border-bottom:1px solid var(--rule-hard);
}
.person a:hover{ color:var(--signal); border-color:var(--signal); }

/* --- contact ----------------------------------------------- */
.contact{
  border:2px solid var(--ink); padding:clamp(24px,4vw,40px);
  display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:30px 44px;
  background:var(--panel);
  box-shadow:var(--shadow);
}
.contact h3{ font-size:clamp(24px,3.4vw,36px); letter-spacing:-.03em; margin:0 0 12px; }
.contact p{ color:var(--muted); font-size:14.5px; margin:0; max-width:40ch; }
.contact__list{ display:flex; flex-direction:column; gap:14px; }
.contact__item{ display:flex; flex-direction:column; gap:3px; }
.contact__k{ font-family:var(--mono); font-size:10px; letter-spacing:.16em; text-transform:uppercase; color:var(--muted); }
.contact__v{ font-family:var(--mono); font-size:15px; color:var(--ink); text-decoration:none; word-break:break-word; }
a.contact__v:hover{ color:var(--signal); }
.copy-btn{
  font-family:var(--mono); font-size:10px; letter-spacing:.12em; text-transform:uppercase;
  background:none; border:1px solid var(--rule); color:var(--muted);
  padding:3px 7px; border-radius:2px; cursor:pointer; margin-left:8px;
}
.copy-btn:hover{ color:var(--ink); border-color:var(--rule-hard); }

/* --- status bar -------------------------------------------- */
.statusbar{
  position:fixed; left:0; right:0; bottom:0; height:var(--bar-h); z-index:60;
  background:var(--paper-sunk); border-top:1px solid var(--rule-hard);
  display:flex; align-items:center; gap:0;
  font-family:var(--mono); font-size:11px; letter-spacing:.08em;
  color:var(--muted); text-transform:uppercase;
  padding:0 var(--gutter);
  overflow:hidden;
}
.statusbar__seg{
  padding:0 16px; border-right:1px solid var(--rule);
  white-space:nowrap; display:flex; align-items:center; gap:7px; height:100%;
}
.statusbar__seg:first-child{ padding-left:0; }
.statusbar__seg--push{ margin-left:auto; border-right:0; border-left:1px solid var(--rule); }
.statusbar__dot{
  width:6px; height:6px; border-radius:50%; background:var(--ok); flex:none;
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{ 0%,100%{ opacity:1 } 50%{ opacity:.35 } }
.statusbar .num{ font-variant-numeric:tabular-nums; color:var(--ink); }

/* --- case-study page bits ---------------------------------- */
.backlink{
  display:inline-flex; align-items:center; gap:8px; margin:38px 0 0;
  font-family:var(--mono); font-size:11.5px; letter-spacing:.12em;
  text-transform:uppercase; color:var(--muted); text-decoration:none;
}
.backlink:hover{ color:var(--signal); }
.figure{
  border:1px solid var(--rule); background:var(--paper-sunk);
  aspect-ratio:16/9; display:flex; align-items:center; justify-content:center;
  margin:0 0 10px; overflow:hidden;
}
.figure img{
  width:100%; height:100%; object-fit:cover; object-position:top center;
  display:block;
}
.figure--tall{ aspect-ratio:16/10; }
.figure__ph{
  font-family:var(--mono); font-size:11px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--muted); text-align:center; padding:20px;
}
.figcap{
  font-family:var(--mono); font-size:11px; color:var(--muted);
  letter-spacing:.04em; margin:0 0 28px;
}
.callout{
  border-left:2px solid var(--signal); padding:2px 0 2px 18px;
  margin:0 0 26px; max-width:var(--measure);
}
.callout p{ margin:0; font-size:15px; color:var(--ink); letter-spacing:-.008em; }

/* numbered sub-heading inside case studies */
.sub{
  font-family:var(--mono); font-size:11px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--signal);
  padding-top:34px; margin-bottom:12px; display:block;
}
.sub + h3{ font-size:20px; letter-spacing:-.02em; margin:0 0 12px; }

/* empty state (notes) */
.empty{
  border:1px dashed var(--rule-hard); padding:clamp(28px,5vw,52px);
  text-align:center; color:var(--muted); max-width:var(--measure);
}
.empty h3{ font-size:18px; color:var(--ink); margin:0 0 8px; }
.empty p{ font-size:14px; margin:0 auto; max-width:44ch; }

/* --- responsive -------------------------------------------- */
@media (max-width:1040px){
  .shell{ grid-template-columns:1fr; }
  .rail{
    position:static; height:auto; border-right:0;
    border-bottom:1px solid var(--rule); margin-right:0;
    padding:20px 0 16px; flex-direction:row; align-items:center;
    flex-wrap:wrap; gap:14px 22px;
  }
  .rail__label,.toc{ display:none; }
  .rail__foot{ margin-top:0; margin-left:auto; flex-direction:row; align-items:center; gap:14px; }
  .masthead{ padding-top:40px; }
  .entry{ grid-template-columns:1fr; gap:18px; }
  .entry__aside{ padding-top:0; }
}
@media (max-width:640px){
  body{ font-size:15.5px; }
  .meta__cell{ border-right:0; border-bottom:1px solid var(--rule); padding-right:0; }
  .meta__cell:last-child{ border-bottom:0; }
  .spec__row{ font-size:12px; }
  .statusbar__seg--hide-sm{ display:none; }
  .section{ padding-top:56px; }
}

/* --- print ------------------------------------------------- */
@media print{
  .rail,.statusbar,.theme-toggle,.copy-btn{ display:none !important; }
  body{ padding-bottom:0; background:#fff; color:#000; }
  .shell{ display:block; padding:0; }
  .section{ break-inside:avoid; padding-top:28px; }
  .entry{ break-inside:avoid; }
}