/* WORKINGS · Vol. 1 — design system
   Cream stock, press-black ink, one spot ink per issue. */

:root {
  /* stock + ink */
  --paper: #f3ecdc;
  --paper-2: #ebe2cc;
  --ink: #1c1a17;
  --ink-2: #5e574c;          /* 6.3:1 on paper */

  /* Vol. 1 spot inks */
  --radio: #d4501c;
  --modem: #2a55c0;
  --crust: #b8861a;
  --solder: #2c7d4f;
  --magenta: #c22f78;
  --accent: var(--radio);

  /* status */
  --error: #a3261b;
  --success: #2c7d4f;

  /* type */
  --f-display: 'Big Shoulders Display', 'Arial Narrow', sans-serif;
  --f-text: 'Spectral', Georgia, serif;
  --f-mono: 'Fragment Mono', ui-monospace, monospace;

  --rail: 124px;
  --ease: cubic-bezier(0.25, 1, 0.5, 1);
}

[data-ink="radio"]   { --accent: var(--radio); }
[data-ink="modem"]   { --accent: var(--modem); }
[data-ink="crust"]   { --accent: var(--crust); }
[data-ink="solder"]  { --accent: var(--solder); }
[data-ink="magenta"] { --accent: var(--magenta); }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  /* light halftone on the stock */
  background-image: radial-gradient(rgba(28, 26, 23, 0.05) 0.75px, transparent 1.1px);
  background-size: 4px 4px;
  font-family: var(--f-text);
  font-size: 19px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, ol, ul, figure, dl, dd { margin: 0; }
ol, ul { padding: 0; list-style: none; }

:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 10;
  background: var(--ink); color: var(--paper);
  font: 13px/1 var(--f-mono); padding: 0 16px; text-decoration: none;
  display: inline-flex; align-items: center; min-height: 44px;
}
.skip:focus { top: 12px; }

/* ---------- Folio rail (nav partial) ---------- */
.rail {
  position: fixed; inset: 0 auto 0 0; width: var(--rail);
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 22px 16px 20px;
  border-right: 1px solid var(--ink);
  background: var(--paper);
  font: 11px/1.4 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase;
  z-index: 5;
}
.rail__mark {
  font-family: var(--f-display); font-weight: 900; font-size: 46px; line-height: 0.8;
  letter-spacing: 0.01em; text-decoration: none;
  writing-mode: vertical-rl; transform: rotate(180deg);
  align-self: flex-start;
  display: flex; align-items: center; min-width: 44px; min-height: 44px; padding: 4px 0;
}
.rail__nav { display: flex; flex-direction: column; gap: 2px; }
.rail__nav a {
  display: flex; align-items: center; min-height: 44px; padding: 0 6px;
  text-decoration: none; color: var(--ink-2);
  border-top: 1px solid transparent;
  transition: color 150ms var(--ease), background-color 150ms var(--ease);
}
.rail__nav a:hover { color: var(--ink); background: var(--paper-2); }
.rail__nav a:active { background: #e2d7be; }
.rail__nav a[aria-current="page"] { color: var(--ink); border-top-color: var(--ink); }
.rail__nav a[aria-current="page"]::before {
  content: ""; display: inline-block; flex: none;
  width: 7px; height: 7px; margin-right: 8px; background: var(--ink);
}
.rail__foot { color: var(--ink-2); display: grid; gap: 4px; }
.rail__foot b { color: var(--ink); font-weight: 400; }

/* ---------- Sheet ---------- */
.sheet { margin-left: var(--rail); }
.sheet main, .colophon {
  padding-inline: clamp(20px, 5.5vw, 96px);
  max-width: 1480px;
}
main { padding-block: clamp(28px, 5vw, 64px) clamp(56px, 8vw, 112px); }

/* ---------- Shared parts ---------- */
.folio {
  font: 11px/1.4 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-2);
}
a.folio {
  display: inline-flex; align-items: center; min-height: 44px;
  text-underline-offset: 3px;
}
a.folio:hover { color: var(--ink); }
.folio-row {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px;
  padding-bottom: 10px; border-bottom: 1px solid var(--ink);
}
.rule-double { border: 0; border-top: 4px solid var(--ink); height: 4px; border-bottom: 1px solid var(--ink); margin: 0; }
.stamp {
  display: inline-flex; align-items: center; gap: 10px;
  font: 12px/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase;
  border: 1px solid var(--ink); padding: 8px 10px; background: var(--paper);
}
.chip {
  display: inline-block; font: 11px/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase;
  background: var(--ink); color: var(--paper); padding: 6px 8px;
}
.ink-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); display: inline-block; flex: none; }
.display { font-family: var(--f-display); font-weight: 900; text-transform: uppercase; line-height: 0.86; letter-spacing: 0.002em; }
.deck { font-family: var(--f-text); font-style: italic; font-weight: 400; }
.h2 {
  font-family: var(--f-display); font-weight: 800; text-transform: uppercase;
  font-size: clamp(30px, 3.4vw, 44px); line-height: 0.95;
}

/* halftone field in the spot ink */
.halftone {
  background-image: radial-gradient(circle at center, var(--accent) 0 40%, transparent 43%);
  background-size: 9px 9px;
  -webkit-mask-image: linear-gradient(155deg, #000 8%, rgba(0,0,0,0.55) 45%, transparent 88%);
          mask-image: linear-gradient(155deg, #000 8%, rgba(0,0,0,0.55) 45%, transparent 88%);
}

/* crop marks */
.crops {
  background:
    linear-gradient(var(--ink), var(--ink)) left 0 top 0 / 16px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) left 0 top 0 / 1px 16px no-repeat,
    linear-gradient(var(--ink), var(--ink)) right 0 top 0 / 16px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) right 0 top 0 / 1px 16px no-repeat,
    linear-gradient(var(--ink), var(--ink)) left 0 bottom 0 / 16px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) left 0 bottom 0 / 1px 16px no-repeat,
    linear-gradient(var(--ink), var(--ink)) right 0 bottom 0 / 16px 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) right 0 bottom 0 / 1px 16px no-repeat;
}

/* ---------- Covers ---------- */
.cover {
  position: relative; display: block; overflow: hidden;
  border: 1px solid var(--ink); background: var(--paper-2);
  color: var(--ink); text-decoration: none;
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease);
}
a.cover:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--ink); }
a.cover:active { transform: translate(0, 0); box-shadow: 0 0 0 var(--ink); }
.cover .halftone { position: absolute; inset: 0; }
.cover__num {
  position: absolute; right: -0.03em; bottom: -0.1em;
  font-family: var(--f-display); font-weight: 900; line-height: 0.8;
  font-size: clamp(150px, 20vw, 300px);
  color: var(--ink);
  text-shadow: 0.035em 0.02em 0 var(--accent);   /* off-register second pass */
}
.cover__plate {
  position: absolute; left: 16px; top: 16px; right: 16px; max-width: 30rem;
  background: var(--paper); border: 1px solid var(--ink); padding: 14px 16px 16px;
  display: grid; gap: 12px;
}
.cover__meta { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.cover__title { font-family: var(--f-display); font-weight: 800; text-transform: uppercase; line-height: 0.95; font-size: clamp(24px, 2.6vw, 36px); }
.cover--blank {
  background: transparent; border: 1px dashed var(--ink-2);
  display: grid; place-content: center; text-align: center; gap: 6px; padding: 28px;
}
.cover--blank .folio { color: var(--ink-2); }
.cover--blank strong { font: 800 28px/1 var(--f-display); text-transform: uppercase; color: var(--ink-2); }

/* ---------- Buttons + fields ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 20px; border: 1px solid var(--ink);
  font: 13px/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase;
  cursor: pointer; text-decoration: none;
  transition: background-color 150ms var(--ease), color 150ms var(--ease), transform 100ms var(--ease);
}
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: #34302a; }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--paper-2); }
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn[aria-busy="true"] { cursor: progress; opacity: 0.75; }

.field { display: grid; gap: 6px; }
.field label { font: 11px/1.4 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.field input {
  height: 48px; width: 100%; padding: 0 14px;
  border: 1px solid var(--ink); border-radius: 0; background: var(--paper);
  font: 15px/1 var(--f-mono); color: var(--ink);
}
.field input::placeholder { color: var(--ink-2); }
.field input:hover { background: #f7f1e4; }
.field input:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.field input[aria-invalid="true"] { border: 2px solid var(--error); }
.field input:disabled { opacity: 0.55; cursor: not-allowed; }
.msg { font: 12px/1.5 var(--f-mono); min-height: 18px; }
.msg--error { color: var(--error); }
.msg--ok { color: var(--ink); }

/* ---------- Issue layout (shared by issue pages and the index embed) ---------- */
.opener { display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 clamp(20px, 3vw, 40px); }
.opener > * { grid-column: 1 / -1; }
.issue-label { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin: 22px 0 18px; }
.headline { font-size: clamp(54px, 8.4vw, 132px); max-width: 13ch; }
.opener .deck { grid-column: 1 / span 8; font-size: clamp(22px, 2.3vw, 31px); line-height: 1.3; margin-top: 24px; max-width: 34ch; }
.byline { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: baseline; margin-top: 26px; padding: 12px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.byline strong { font: 600 18px/1 var(--f-text); }

.spread { display: grid; grid-template-columns: repeat(12, 1fr); gap: 32px clamp(20px, 3vw, 40px); margin-top: clamp(36px, 5vw, 64px); }
.video { grid-column: 1 / span 7; }
.video__frame { position: relative; aspect-ratio: 1 / 1; border: 1px solid var(--ink); background: var(--paper-2); overflow: hidden; }
.video__frame .halftone { position: absolute; inset: 0; opacity: 0.55; }
.video__inner { position: absolute; inset: 18px; display: grid; place-content: center; text-align: center; gap: 14px; }
.video__inner svg { width: 64px; height: 64px; margin: 0 auto; }
.video figcaption { display: flex; justify-content: space-between; gap: 12px; margin-top: 10px; }
.words { grid-column: 8 / span 5; display: grid; gap: 22px; align-content: start; }
.words__slot { border: 1px dashed var(--ink-2); padding: 28px 22px; min-height: 320px; display: grid; align-content: center; gap: 10px; }
.words__slot p.ph { font-size: 22px; font-style: italic; }

.strip { margin-top: clamp(48px, 6vw, 80px); display: grid; gap: 16px; }
.steps { display: grid; grid-template-columns: repeat(5, 1fr); border: 1px solid var(--ink); }
.step { padding: 16px 16px 18px; display: grid; gap: 14px; align-content: start; position: relative; }
.step + .step { border-left: 1px solid var(--ink); }
.step__n { display: flex; justify-content: space-between; align-items: center; }
.step__n b { font: 900 34px/0.8 var(--f-display); color: var(--accent); text-shadow: 1px 1px 0 var(--ink); }
.step svg { width: 22px; height: 22px; }
.step__name { font: 800 22px/1 var(--f-display); text-transform: uppercase; }
.step:last-child { box-shadow: inset 0 6px 0 var(--accent); }

.tail { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px clamp(20px, 3vw, 40px); margin-top: clamp(40px, 5vw, 64px); }
.credits { grid-column: 1 / span 5; border: 1px solid var(--ink); padding: 16px 18px; display: grid; gap: 10px; background: var(--paper); }
.credits p { font-size: 18px; line-height: 1.45; }
.tail__end { grid-column: 7 / span 6; align-self: end; display: flex; flex-wrap: wrap; gap: 12px; justify-content: flex-end; }

@media (max-width: 960px) {
  .video, .words { grid-column: 1 / -1; }
  .steps { grid-template-columns: 1fr; }
  .step + .step { border-left: 0; border-top: 1px solid var(--ink); }
  .step { grid-template-columns: auto 1fr; align-items: center; }
  .step__n { gap: 14px; }
}
@media (max-width: 860px) {
  .opener .deck, .credits, .tail__end { grid-column: 1 / -1; }
  .tail__end { justify-content: flex-start; }
  .words__slot { min-height: 200px; }
}

/* ---------- Designed with Puerta mark ---------- */
.puerta {
  display: inline-flex; align-items: center; gap: 10px;
  min-height: 44px; padding: 0 12px;
  border: 1px solid var(--ink); background: var(--paper); color: var(--ink);
  font: 11px/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase;
}
.puerta svg { width: 22px; height: 28px; flex: none; }
.puerta b { font: 800 17px/1 var(--f-display); letter-spacing: 0.02em; }

/* ---------- Colophon (footer partial) ---------- */
.colophon { padding-block: 0 40px; }
.colophon__inner {
  border-top: 4px solid var(--ink); padding-top: 28px;
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 32px clamp(20px, 3vw, 40px);
}
.signup { grid-column: span 7; display: grid; gap: 14px; align-content: start; }
.signup__row { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: end; }
.backissues { grid-column: span 5; display: grid; gap: 12px; align-content: start; }
.backissues li { border-top: 1px solid var(--ink); }
.backissues a, .backissues .unprinted {
  display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; align-items: baseline;
  padding: 12px 0; min-height: 44px; text-decoration: none;
}
.backissues a:hover .bi-title { text-decoration: underline; text-underline-offset: 3px; }
.bi-title { font: 700 20px/1.05 var(--f-display); text-transform: uppercase; }
.unprinted { color: var(--ink-2); }
.colophon__base {
  grid-column: 1 / -1; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px;
  border-top: 1px solid var(--ink); padding-top: 14px;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .rail {
    position: static; width: auto; flex-direction: row; align-items: center; flex-wrap: wrap;
    gap: 6px 16px; padding: 12px 20px; border-right: 0; border-bottom: 1px solid var(--ink);
  }
  .rail__mark { writing-mode: horizontal-tb; transform: none; font-size: 30px; min-height: 44px; padding: 0; }
  .rail__nav { flex-direction: row; flex-wrap: wrap; }
  .rail__nav a { min-height: 44px; padding: 0 10px; }
  .rail__foot { display: none; }
  .sheet { margin-left: 0; }
  .signup, .backissues { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .signup__row { grid-template-columns: 1fr; }
  .cover__plate { left: 12px; right: 12px; top: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
  /* no cover lift, no button nudge */
  a.cover:hover, a.cover:active { transform: none; box-shadow: none; outline: 2px solid var(--ink); outline-offset: 2px; }
  .btn:active { transform: none; }
}