:root {
  /* Core palette */
  --bg: #032a19;
  --panel: #c7f5b3;
  --fg: #ff21b9;
  --line: #4aa409;
  --accent: #ffea00;

  /* Yarn defaults used by JS */
  --warp-a: #a24ecf;
  --warp-b: #6620a0;
  --weft-a: #eeb218;
  --weft-b: #c5730e;

  --app-max-width: clamp(350px, 75vw, 1000px);
  --ui-font: 'Share Tech Mono', system-ui, monospace;
}

/* RESET */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--ui-font);
}

/* BASE */
body {
  background: var(--bg);
  color: var(--fg);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  min-height: 100svh;
  font-size: 20px;
  font-weight: 600;
}

/* HEADER */
.page-header {
  max-width: var(--app-max-width);
  width: 100%;
  margin-bottom: 12px;
}

.site-logo {
  margin-left: 20px;
  margin-right: 20px;
  display: block;
  max-width: 100%;
  height: auto;
  fill: var(--panel);
}


.brand {
  margin: 0 0 4px;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--line);
}

.tagline {
  margin-top: 10px;
  margin-bottom: 20;
  color: var(--line);
  font-size: 1.3rem;
}

/* GENERIC ROW CONTAINER */
.card {
  max-width: var(--app-max-width);
  background: var(--bg);
}

/* =================== CONTROLS =================== */

/* 4 equal columns; rows auto-fill, all full-width */
.controls .controls-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px 16px;
}

/* One “block” in the grid */
.control-unit {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: var(--panel);
  border: 7px solid var(--panel);
  padding: 0.4rem;
  text-transform: uppercase;
  font-size: 0.9rem;
  color: var(--fg);
}

.control-unit label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

/* Make all form controls share font + weight */
button,
input,
select,
textarea {
  font: inherit;
  font-weight: 500;
}

/* Shared box model for pattern select + numbers */
.control-unit select,
.control-unit input[type="number"] {
  appearance: none;
  background-color: var(--line);
  color: #000;
  font-size: 1rem;
  text-transform: uppercase;
  border-top: 4px solid var(--bg);
  border-left: 4px solid var(--bg);
  border-bottom: 4px solid var(--fg);
  border-right: 4px solid var(--fg);
  min-height: 2.4rem;
  padding: 0.3rem 0.6rem;
  line-height: 1;
  outline: none;
}

/* Top-panel color pickers (long blocks like original) */
.control-unit--colors .color-row {
  display: flex;
  gap: 8px;
}

.control-unit--colors input[type="color"] {
  flex: 1 1 0;
  min-width: 0;
  background-color: var(--line);
  border-top: 4px solid var(--bg);
  border-left: 4px solid var(--bg);
  border-bottom: 4px solid var(--fg);
  border-right: 4px solid var(--fg);
  height: 2.4rem;
  padding: 0;
  cursor: pointer;
}

.control-unit--colors input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

.control-unit--colors input[type="color"]::-webkit-color-swatch {
  border: none;
}

/* ACTION BUTTON BLOCKS (row 2 right side) */
.control-unit--btn {
  gap: 0.4rem;
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--panel);
  color: var(--bg);
  padding: 0.5rem 0.9rem;
  font-size: 0.95rem;
  text-transform: uppercase;
  cursor: pointer;
  border-top: 4px solid var(--fg);
  border-left: 4px solid var(--fg);
  border-bottom: 4px solid var(--line);
  border-right: 4px solid var(--line);
  box-sizing: border-box;
  width: 100%;
}

.btn:hover {
  background: var(--line);
  color: var(--panel);
}

.btn:active {
  transform: translateY(1px);
  color: var(--fg);
  background: var(--bg);

}

.btn.file {
  position: relative;
}

.btn.file input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* =================== LOOM / CANVAS =================== */

.canvas-card {
  width: 100%;
  max-width: var(--app-max-width);
  overflow-x: auto;
  padding-top: 1rem;
  margin-top: 35px;
}

/* assembly = whole machine (bars + canvas + right controls + tie-up) */
.assembly {
  display: inline-block;
  width: max-content;
  transform-origin: top center;
}

/* inner layout grid */
.layout {
  display: grid;
  grid-template-rows: var(--cs) var(--th) auto;
  grid-template-columns: var(--cs) auto auto;
  grid-template-areas:
    "spacer  warpBar    warpBar"
    "spacer2 threading  threading"
    "weftBar canvas     treadling";
  gap: 10px;
}

.spacer {
  grid-area: spacer;
}

.spacer2 {
  grid-area: spacer2;
}

#warpBar {
  grid-area: warpBar;
}

#threading {
  grid-area: threading;
}

#weftBar {
  grid-area: weftBar;
}

#treadling {
  grid-area: treadling;
}

#weave {
  grid-area: canvas;
}

/* COLOR BARS (top + left hex buttons) */
.bar {
  display: grid;
  gap: 0;
}

.bar.warp {
  grid-template-columns: repeat(var(--warp), var(--cs));
}

.bar.weft {
  grid-template-rows: repeat(var(--weft), var(--cs));
}

.bar .cell {
  width: var(--cs);
  height: var(--cs);
  display: grid;
  place-items: center;
}

/* filled hex pickers (no inner square) */
.bar .cell input[type="color"] {
  width: 100%;
  height: 100%;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  clip-path: polygon(25% 0%,
      75% 0%,
      100% 50%,
      75% 100%,
      25% 100%,
      0% 50%);
}

.bar .cell input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

.bar .cell input[type="color"]::-webkit-color-swatch {
  border: none;
}

/* DRAFT STRIPS */
.draft.threading {
  display: grid;
  grid-template-columns: repeat(var(--warp), var(--cs));
  height: var(--th);
  align-items: center;
  margin-bottom: 10px;
  
}

.draft.treadling {
  display: grid;
  grid-template-rows: repeat(var(--weft), var(--cs));
  align-items: center;
  margin-left: 10px;
}

/* Threading / treadling buttons */
.draft button {
  all: unset;
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fg);
  background: var(--panel);
  border-top: 3px solid var(--bg);
  border-left: 3px solid var(--bg);
  border-bottom: 3px solid var(--fg);
  border-right: 3px solid var(--fg);
  cursor: pointer;
  width: 24px;
  height: 24px;
  margin: auto;
}

.draft button.on {
  background: var(--line);
  color: var(--bg);
}

.treadle-row {
  display: flex;
  gap: 4px;
  align-items: center;
}

/* TIE-UP MATRIX */
.tieup-wrap {
  margin-top: 16px;
}

.tieup {
  display: grid;
  grid-template-columns: 32px repeat(4, 28px);
  grid-auto-rows: 26px;
  gap: 6px;
  align-items: center;
}

.tieup .hdr,
.tieup .rowhdr {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--fg);
  display: grid;
  place-items: center;
}

.tieup label {
  display: grid;
  place-items: center;
}

/* Checkboxes styled like mini pixels */
.tieup input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  cursor: pointer;
  background: var(--panel);
  border-top: 3px solid var(--bg);
  border-left: 3px solid var(--bg);
  border-bottom: 3px solid var(--fg);
  border-right: 3px solid var(--fg);
}

.tieup input[type="checkbox"]:checked {
  background: var(--line);
}

/* CANVAS */
canvas {
  display: block;
  background: var(--bg);
}

/* FOOTER */
.footer {
  max-width: var(--app-max-width);
  width: 100%;
  margin: 1rem auto 0;
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--fg);
}

/* Make Save JSON and Load JSON text truly identical */
.btn,
.btn.file,
label.btn {
  font-family: var(--ui-font);
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1;
  /* keeps vertical centering consistent */
}


/* Chrome / Edge / Safari, etc. */
input[type="number"]::selection {
  background: var(--accent);
  /* or any bright color */
  color: #000;
  /* text color while selected */
}

/* Firefox */
input[type="number"]::-moz-selection {
  background: var(--accent);
  color: #000;
}