/* The shader page deliberately borrows the portfolio's monochrome, type-first system. */

:root {
  --shader-line: var(--border-thickness) solid var(--text-color);
  --shader-muted: var(--text-color-alt);
}

body {
  max-width: none;
  padding: 0 2ch;
}

.shader-page,
.shader-page * {
  margin-top: 0;
}

.shader-page {
  width: min(100%, 112ch);
  margin: 0 auto;
  padding: calc(var(--line-height) * 1.5) 0 calc(var(--line-height) * 4);
}

.shader-nav,
.shader-intro__actions,
.section-heading,
.config-heading,
.card-meta,
.card-actions,
.dialog-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2ch;
}

.shader-nav {
  padding-bottom: var(--line-height);
  border-bottom: var(--shader-line);
  font-size: 0.75rem;
}

.shader-nav a {
  text-decoration: none;
}

.shader-nav span,
.shader-lede,
.shader-note,
.results-heading > p,
.config-heading,
.eyebrow {
  color: var(--shader-muted);
}

.shader-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1ch 4ch;
  align-items: end;
  padding: calc(var(--line-height) * 1.25) 0;
  border-bottom: var(--shader-line);
}

.shader-intro .eyebrow,
.shader-intro h1 {
  grid-column: 1 / -1;
}

.shader-intro h1 {
  grid-column: 1;
  margin: 0;
  font-size: 2rem;
  line-height: calc(2 * var(--line-height));
  letter-spacing: 0;
}

.shader-lede {
  grid-column: 1;
  margin: 0;
  max-width: 38ch;
  line-height: 1.5;
}

.shader-intro__actions {
  grid-column: 2;
  grid-row: 2 / span 2;
  justify-content: flex-start;
  align-items: center;
  flex-wrap: wrap;
}

.shader-workbench {
  display: grid;
  grid-template-columns: minmax(260px, 31ch) minmax(0, 1fr);
  gap: calc(var(--line-height) * 2) 4ch;
  align-items: start;
  padding-top: calc(var(--line-height) * 3);
}

.shader-controls {
  position: sticky;
  top: var(--line-height);
}

.section-heading {
  align-items: end;
  padding-bottom: var(--line-height);
  border-bottom: var(--shader-line);
}

.section-heading h2 {
  margin: 0;
}

.quiet-button {
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--text-color);
  box-shadow: none;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.quiet-button:hover,
.quiet-button:focus-visible {
  background: transparent;
  color: var(--shader-muted);
}

.preset-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1ch;
  margin-top: calc(var(--line-height) * 1.5);
}

.preset-row button,
.card-actions button,
.config-actions button,
.shader-intro__actions button {
  min-height: calc(var(--line-height) * 1.7);
  padding: 4px 1ch;
  font-size: 0.7rem;
}

.preset-row button[aria-pressed="true"] {
  background: var(--text-color);
  color: var(--background-color);
}

.control-list {
  display: grid;
  gap: calc(var(--line-height) * 0.8);
  margin-top: calc(var(--line-height) * 1.5);
}

.control {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.3rem 1ch;
  width: 100%;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.control output {
  color: var(--shader-muted);
}

.control input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  height: 1.2rem;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: ew-resize;
}

.control input[type="range"]::-webkit-slider-runnable-track { height: 2px; background: var(--text-color); }
.control input[type="range"]::-webkit-slider-thumb { width: 12px; height: 12px; margin-top: -5px; appearance: none; border: 1px solid var(--text-color); border-radius: 50%; background: var(--background-color); }
.control input[type="range"]::-moz-range-track { height: 2px; background: var(--text-color); }
.control input[type="range"]::-moz-range-thumb { width: 11px; height: 11px; border: 1px solid var(--text-color); border-radius: 50%; background: var(--background-color); }

.palette {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1ch;
  margin-top: calc(var(--line-height) * 1.5);
  padding-top: var(--line-height);
  border-top: 1px solid var(--shader-muted);
}

.palette label:not(.check) {
  display: grid;
  grid-template-columns: 1fr 3ch;
  align-items: center;
  width: 100%;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.palette input[type="color"] {
  width: 3ch;
  height: 3ch;
  padding: 2px;
}

.check {
  grid-column: 1 / -1;
  display: flex;
  gap: 1ch;
  align-items: center;
  width: auto;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.check input {
  width: 2ch;
  height: 2ch;
  padding: 0;
}

.upload {
  display: grid;
  gap: 0.25rem;
  width: 100%;
  margin-top: calc(var(--line-height) * 1.5);
  padding: 1ch;
  border: 1px dashed var(--text-color);
  cursor: pointer;
  font-size: 0.7rem;
  text-transform: uppercase;
}

.upload strong { font-size: 0.8rem; }
.upload input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.upload:hover { background: var(--background-color-alt); }

.config-block {
  margin-top: calc(var(--line-height) * 1.5);
  padding-top: var(--line-height);
  border-top: var(--shader-line);
  font-size: 0.7rem;
  text-transform: uppercase;
}

#copy-status { min-height: 1em; }
.config-block pre { max-height: 190px; margin: 1ch 0; padding: 1ch; border: 1px solid var(--text-color); background: var(--background-color-alt); font-size: 0.68rem; line-height: 1.4; text-transform: none; }
.config-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 1ch; }

.results-heading { margin-bottom: calc(var(--line-height) * 1.5); }
.results-heading > p { margin: 0; font-size: 0.7rem; text-transform: uppercase; }
.status-dot { display: inline-block; width: 0.65ch; height: 0.65ch; margin-right: 0.5ch; border-radius: 50%; background: currentColor; }

.media-stage {
  position: relative;
  overflow: hidden;
  border: var(--shader-line);
  background: var(--background-color);
}

.media-stage canvas,
.media-stage img { display: block; width: 100%; height: auto; }
.media-stage img { position: absolute; inset: 0; height: 100%; object-fit: cover; opacity: 0; pointer-events: none; }
.shader-card[data-show-source="true"] .media-stage img { opacity: 1; }
.card-index { position: absolute; top: 1ch; left: 1ch; display: grid; place-items: center; width: 2.5ch; height: 2.5ch; border: 1px solid var(--background-color); border-radius: 50%; color: var(--background-color); background: var(--text-color); font-size: 0.7rem; }
.card-meta { align-items: end; padding-top: var(--line-height); }
.card-meta .eyebrow { margin-bottom: 0.3rem; }
.card-meta h3 { margin: 0; }
.card-actions { justify-content: flex-end; flex-wrap: wrap; }

.shader-note { max-width: 52ch; margin-top: calc(var(--line-height) * 2); font-size: 0.75rem; line-height: 1.5; }

dialog { width: min(90vw, 56ch); padding: calc(var(--line-height) * 1.5); border: var(--shader-line); color: var(--text-color); background: var(--background-color); }
dialog::backdrop { background: rgb(0 0 0 / 55%); }
dialog h2 { margin: calc(var(--line-height) * 1.5) 0 var(--line-height); }
dialog p { line-height: 1.5; }
.dialog-formula { padding: 1ch; border: 1px dashed var(--text-color); }

@media (max-width: 760px) {
  .shader-intro { display: block; }
  .shader-intro__actions { margin-top: var(--line-height); }
  .shader-workbench { display: block; }
  .shader-controls { position: relative; margin-bottom: calc(var(--line-height) * 3); }
  .control-list { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 3ch; }
}

@media (max-width: 500px) {
  .shader-page { padding-top: var(--line-height); }
  .shader-intro { padding-top: calc(var(--line-height) * 2); }
  .control-list { grid-template-columns: 1fr; }
  .card-meta { display: block; }
  .card-actions { justify-content: flex-start; margin-top: var(--line-height); }
}