/* ==========================================================================
   CASSETTE FUTURISM — Build with it (Design Completion Campaign, 2026-09-29).
   Another unit in the rack, between the hero unit and BAY 01: modules in
   beige housings with screw heads, MOD plates, LEDs and CRT windows. Faces
   are the room's (SpaceMonoX, DotGothicX, declared in x-cassette-futurism.css)
   and the phosphor follows the room's switch (--cf-ph on the page). Every
   class is gcf- or scoped to .gm--cassette-futurism. Only the stepped
   readout moves, and reduced motion stops it.
   ========================================================================== */
.gm--cassette-futurism {
  --gm-tag-inverse: var(--gm-color-panel);
  --gcf-ph: var(--cf-ph, var(--gm-color-phosphor));
  max-width: none; margin: 18px max(clamp(10px, 3vw, 24px), calc((100% - 1072px) / 2)); padding: 22px clamp(14px, 3vw, 28px) 26px;
  color: var(--gm-color-engraving); font: 400 16px/1.6 var(--gm-font);
  background: linear-gradient(180deg, var(--gm-color-panel), var(--gm-color-housing) 60%, #C9BDA4);
  border: var(--gm-edge) solid var(--gm-color-edge); border-radius: var(--gm-radius);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, .6), inset 0 -3px 0 rgba(74, 66, 52, .25);
}
.gm--cassette-futurism .gm__head { padding-bottom: 16px; border-bottom: var(--gm-edge) solid var(--gm-color-edge); margin-bottom: 20px; }
.gm--cassette-futurism .gm__title { display: inline-block; align-self: start; padding: 8px 14px; border-radius: 4px; background: var(--gm-color-engraving); color: var(--gm-color-panel); box-shadow: inset 0 0 0 2px var(--gm-color-edge); font: 400 clamp(24px, 3vw, 34px)/1.05 var(--gm-font-dot); letter-spacing: .06em; text-transform: uppercase; }
.gm--cassette-futurism .gm__key, .gm--cassette-futurism .gm__get { opacity: 1; }
.gm--cassette-futurism a { color: var(--gm-color-engraving); }
.gm--cassette-futurism .gm-t { font: 700 11px/1.6 var(--gm-font); letter-spacing: .06em; border-radius: 2px; }
.gm--cassette-futurism .gm-more summary { font: 700 12px/1.4 var(--gm-font); letter-spacing: .14em; text-transform: uppercase; }
.gm--cassette-futurism .gm-ls__why, .gm--cassette-futurism .gm-ls__from { opacity: 1; color: #5E5443; }
.gm--cassette-futurism :focus-visible { outline: 3px solid var(--gm-color-phosphor); outline-offset: 3px; }
.gm--cassette-futurism * { transition-timing-function: steps(1) !important; }

/* ---- modules ---- */
.gcf-rack-board { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.gcf-m { position: relative; min-width: 0; padding: 30px 16px 16px; background: var(--gm-color-panel); border: var(--gm-edge) solid var(--gm-color-edge); border-radius: var(--gm-radius); box-shadow: inset 0 -3px 0 rgba(74, 66, 52, .18); }
.gcf-m::before, .gcf-m::after { content: ""; position: absolute; top: 9px; width: 10px; height: 10px; border-radius: 50%; background: radial-gradient(circle at 40% 40%, #efe6d3, var(--gm-color-edge)); box-shadow: inset 0 0 0 1px var(--gm-color-engraving); }
.gcf-m::before { left: 9px; }
.gcf-m::after { right: 9px; }
.gcf-m--wide { grid-column: 1 / -1; }
.gcf-m .gm-f__head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; padding-bottom: 10px; border-bottom: var(--gm-edge) solid var(--gm-color-edge); }
.gcf-m .gm-f__n { flex: 0 0 auto; padding: 2px 8px; border-radius: 3px; background: var(--gm-color-engraving); color: var(--gm-color-panel); font: 700 12px/1.4 var(--gm-font); white-space: nowrap; }
.gcf-m .gm-f__name { flex: 1 1 auto; font: 700 clamp(15px, 1.8vw, 18px)/1.2 var(--gm-font); letter-spacing: .14em; text-transform: uppercase; text-shadow: 0 1px 0 rgba(255, 255, 255, .7); }
.gcf-led { flex: 0 0 12px; width: 12px; height: 12px; border-radius: 50%; background: var(--gcf-ph); box-shadow: 0 0 6px var(--gcf-ph); }
.cf-off .gcf-led { background: #5A4A2A; box-shadow: none; }
.gcf-m .gm-f__note { opacity: 1; }
.gcf-cap { margin: 12px 0 0; font-size: 14px; line-height: 1.5; max-width: 62ch; }
.gcf-lab { display: inline-block; margin-right: 4px; padding: 0 6px; border-radius: 2px; background: var(--gm-color-engraving); color: var(--gm-color-panel); font-size: 12px; font-weight: 700; }
.gcf-eng { margin: 0; font: 700 12px/1.4 var(--gm-font); letter-spacing: .2em; text-transform: uppercase; }
.gcf-dot { margin: 0; font: 400 18px/1.5 var(--gm-font-dot); }
.gcf-vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* the CRT window, as the room draws it */
.gcf-crt { position: relative; display: block; margin-top: 12px; padding: 14px 16px; background: var(--gm-color-screen); color: var(--gcf-ph); border-radius: var(--gm-radius-screen); box-shadow: inset 0 0 0 4px #0c0904, inset 0 0 30px rgba(0, 0, 0, .9), 0 0 0 5px var(--gm-color-edge); text-shadow: 0 0 6px color-mix(in srgb, var(--gcf-ph) 60%, transparent); }
.gcf-crt::after { content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit; background: repeating-linear-gradient(0deg, rgba(0, 0, 0, .35) 0 2px, transparent 2px 4px); }
.cf-off .gcf-crt * { visibility: hidden; }

/* 1 colour */
.gcf-sws { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px 8px; font: 400 12px/1.3 var(--gm-font); }
.gcf-sws li { display: grid; gap: 2px; min-width: 0; }
.gcf-sws span { display: block; height: 36px; border: 2px solid var(--gm-color-edge); border-radius: 3px; }
.gcf-sws b { font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.gcf-sws code { font: inherit; }

/* 2 type */
.gcf-plate { display: inline-block; margin: 0 0 10px; padding: 4px 12px; border-radius: 4px; background: var(--gm-color-engraving); color: var(--gm-color-panel); box-shadow: inset 0 0 0 2px var(--gm-color-edge); font: 400 26px/1.05 var(--gm-font-dot); letter-spacing: .06em; }
.gcf-plate--sm { margin: 0; padding: 2px 8px; font-size: 13px; }

/* 3 rack */
.gcf-rack { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; padding: 8px; background: var(--gm-color-engraving); border-radius: 4px; }
.gcf-rack__u { display: grid; place-items: center; min-height: 34px; background: var(--gm-color-housing); border: 2px solid var(--gm-color-edge); border-radius: 3px; font: 700 11px/1 var(--gm-font); letter-spacing: .14em; }
.gcf-rack__u--2 { grid-column: span 2; }
.gcf-rack__u--3 { grid-column: 1 / -1; }

/* 4 housing */
.gcf-shapes { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.gcf-box { padding: 12px 14px; border: 2px solid var(--gm-color-edge); border-radius: var(--gm-radius); background: var(--gm-color-housing); font-size: 13px; }
.gcf-tube { width: 64px; height: 48px; background: var(--gm-color-screen); border-radius: var(--gm-radius-screen); box-shadow: inset 0 0 0 4px #0c0904, 0 0 0 4px var(--gm-color-edge); }

/* 5 imagery */
.gcf-crt--wire { max-width: 520px; padding: 10px; }
.gcf-crt--wire svg { display: block; width: 100%; height: auto; }

/* 6 components: keys, strip, module card, CRT field */
.gcf-key {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; min-width: 88px; padding: 0 14px;
  border: 2px solid var(--gm-color-edge); border-radius: 5px; background: linear-gradient(180deg, #efe6d3, #c9bda4);
  box-shadow: 0 var(--gm-travel) 0 var(--gm-color-edge); color: var(--gm-color-engraving);
  font: 700 13px/1.2 var(--gm-font); letter-spacing: .14em; text-transform: uppercase; cursor: pointer; transition: transform .08s steps(1), box-shadow .08s steps(1);
}
.gcf-key:hover { text-decoration: underline; text-underline-offset: 3px; }
.gcf-key:active { transform: translateY(var(--gm-travel)); box-shadow: 0 0 0 var(--gm-color-edge); }
.gcf-key--amber { background: linear-gradient(180deg, #ffc15c, var(--gm-color-phosphor)); color: var(--gm-color-screen); }
.gcf-key:disabled { box-shadow: none; transform: translateY(var(--gm-travel)); color: var(--gm-color-edge); cursor: not-allowed; text-decoration: none; }
.gcf-key--static { cursor: default; font-size: 12px; }
.gcf-nav { display: flex; flex-wrap: wrap; gap: 8px; padding: 10px; margin-bottom: 18px; background: var(--gm-color-engraving); border-radius: 5px; }
.gm--cassette-futurism .gcf-nav a { display: grid; justify-items: center; gap: 5px; min-width: 76px; min-height: 44px; padding: 6px 10px 8px; border-radius: 4px; background: var(--gm-color-panel); color: var(--gm-color-engraving); font: 700 12px/1.2 var(--gm-font); letter-spacing: .16em; text-transform: uppercase; text-decoration: none; }
.gcf-nav a:hover { text-decoration: underline; }
.gcf-nav i { width: 16px; height: 8px; border-radius: 2px; background: #5A4A2A; }
.gcf-nav a[aria-current] { font-weight: 700; box-shadow: inset 0 -3px 0 var(--gm-color-edge); }
.gcf-nav a[aria-current] i { background: var(--gcf-ph); box-shadow: 0 0 8px var(--gcf-ph); }
.gcf-ui { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 22px; align-items: start; }
.gm--cassette-futurism .gcf-card { display: block; padding: 12px 14px 16px; border: 2px solid var(--gm-color-edge); border-radius: var(--gm-radius); background: var(--gm-color-housing); color: var(--gm-color-engraving); text-decoration: none; }
.gcf-card__hd { display: flex; align-items: center; gap: 10px; }
.gcf-card__hd b { flex: 1 1 auto; font: 700 14px/1.2 var(--gm-font); letter-spacing: .14em; text-transform: uppercase; }
.gcf-card:hover .gcf-card__hd b { text-decoration: underline; }
.gcf-card .gcf-dot { font-size: 16px; }
.gcf-form { display: grid; gap: 10px; min-width: 0; }
.gcf-form input { min-width: 0; height: 48px; padding: 0 14px; border: 0; border-radius: var(--gm-radius); background: var(--gm-color-screen); color: var(--gcf-ph); caret-color: var(--gcf-ph); box-shadow: inset 0 0 0 3px #0c0904, 0 0 0 4px var(--gm-color-edge); font: 400 20px/1 var(--gm-font-dot); letter-spacing: .1em; }
.gcf-form input::placeholder { color: color-mix(in srgb, var(--gcf-ph) 55%, var(--gm-color-screen)); }
.gcf-form input:focus-visible { outline: none; box-shadow: inset 0 0 0 3px #0c0904, 0 0 0 4px var(--gcf-ph); }
.gcf-keys { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; padding-bottom: var(--gm-travel); }

/* 7 motion: a label that stays, digits that step */
.gcf-read { display: flex; align-items: center; gap: 2px; font-size: 26px; }
.gcf-read > span:first-child { margin-right: 14px; }
.gcf-roll { display: inline-block; height: 1.5em; line-height: 1.5; overflow: hidden; }
.gcf-roll > span { display: block; width: 1ch; word-break: break-all; white-space: normal; }
@media (prefers-reduced-motion: no-preference) {
  .gcf-roll > span { animation: gcf-roll 2.4s steps(10) infinite; }
  .gcf-roll--fast > span { animation-duration: .9s; }
  @keyframes gcf-roll { to { transform: translateY(-15em); } }
}

/* 8 physical controls */
.gcf-strip { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; padding: 14px 16px; background: var(--gm-color-engraving); border-radius: 6px; box-shadow: inset 0 3px 8px rgba(0, 0, 0, .5); }
.gcf-swatch { position: relative; width: 30px; height: 52px; border-radius: 6px; background: #3a3327; box-shadow: inset 0 2px 4px rgba(0, 0, 0, .6); }
.gcf-swatch i { position: absolute; left: 7px; top: 4px; width: 16px; height: 26px; border-radius: 8px; background: linear-gradient(90deg, #b5a88d, #efe6d3, #b5a88d); }
.gcf-swatch--down i { top: 22px; }
.gcf-knob { position: relative; width: 44px; height: 44px; border-radius: 50%; background: radial-gradient(circle at 40% 35%, #efe6d3, #b5a88d 70%); box-shadow: 0 0 0 3px #3a3327; }
.gcf-knob::after { content: ""; position: absolute; left: 50%; top: 5px; width: 3px; height: 14px; margin-left: -1.5px; background: var(--gm-color-engraving); transform-origin: 50% 17px; transform: rotate(40deg); }
.gcf-slider { position: relative; flex: 1 1 120px; max-width: 200px; height: 10px; border-radius: 5px; background: #1a1408; }
.gcf-slider i { position: absolute; left: 62%; top: -9px; width: 14px; height: 28px; border-radius: 3px; background: linear-gradient(90deg, #b5a88d, #efe6d3, #b5a88d); }

@media (max-width: 820px) {
  .gcf-rack-board, .gcf-ui { grid-template-columns: minmax(0, 1fr); }
  .gcf-sws { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 480px) {
  .gm--cassette-futurism .gm-ls li { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .gcf-read { font-size: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  .gm--cassette-futurism * { animation: none !important; transition: none !important; }
}