:root {
  color-scheme: light;
  --bg: #8f8a83;
  --machine-hi: #e7e2d8;
  --machine-mid: #d0cbc1;
  --machine-lo: #b7b2a9;
  --panel: rgba(0, 0, 0, 0.05);
  --line: rgba(0, 0, 0, 0.16);
  --label: #776f66;
  --text: #26211d;
  --paper: #f6f0e5;
  --paper-shadow: rgba(0, 0, 0, 0.18);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 12px;
  overflow: hidden;
  background:
    radial-gradient(circle at top, #aba59b 0%, transparent 36%),
    linear-gradient(180deg, #8f8a83, #747069);
  font-family: "IBM Plex Mono", "SF Mono", "Menlo", monospace;
  color: var(--text);
}

button,
input,
select {
  font: inherit;
}

.machine {
  position: relative;
  width: min(1060px, 100%);
  height: calc(100vh - 24px);
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  grid-template-rows: auto 1fr;
  gap: 0;
  padding: 18px;
  border-radius: 22px;
  background: linear-gradient(165deg, var(--machine-hi) 0%, var(--machine-mid) 56%, #c3beb4 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    inset 0 -2px 0 rgba(0, 0, 0, 0.16),
    0 24px 70px rgba(0, 0, 0, 0.45);
}

.machine::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 22px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2), inset 0 0 0 2px rgba(0, 0, 0, 0.06);
  pointer-events: none;
}

.screw {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: radial-gradient(circle at 35% 30%, #d8d2ca 0%, #6c6760 100%);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
}

.screw::before,
.screw::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 1.5px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.3);
}

.screw::before {
  transform: translate(-50%, -50%) rotate(28deg);
}

.screw::after {
  transform: translate(-50%, -50%) rotate(-54deg);
  opacity: 0.7;
}

.screw.tl { top: 14px; left: 14px; }
.screw.tr { top: 14px; right: 14px; }
.screw.bl { bottom: 14px; left: 14px; }
.screw.br { bottom: 14px; right: 14px; }

.machine-header {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 2px 0 14px;
}

.machine-kicker {
  margin: 0 0 8px;
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--label);
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 2.4vw, 2.8rem);
  line-height: 1;
}

.header-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--label);
  text-align: right;
}

#printCounter.did-increment {
  animation: counterPulse 480ms ease;
}

@keyframes counterPulse {
  0% { color: var(--label); }
  30% { color: var(--text); }
  100% { color: var(--label); }
}

.control-panel,
.preview-panel {
  position: relative;
  min-height: 0;
}

.control-panel {
  padding-right: 14px;
  padding-bottom: 18px;
  border-right: 1px solid rgba(0, 0, 0, 0.08);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 0, 0, 0.18) transparent;
}

.control-panel::after {
  content: "";
  position: absolute;
  top: 0;
  right: -1px;
  bottom: 0;
  width: 1px;
  background: rgba(255, 255, 255, 0.28);
}

.panel-block {
  margin-bottom: 10px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.035));
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.08), 0 1px 0 rgba(255, 255, 255, 0.42);
}

.block-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--label);
}

.upload-zone {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 84px;
  padding: 10px;
  border: 1px dashed rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  cursor: pointer;
  transition: border-color 120ms ease, background-color 120ms ease;
}

.upload-zone:hover,
.upload-zone.is-dragover {
  border-color: rgba(0, 0, 0, 0.38);
  background: rgba(255, 255, 255, 0.18);
}

.upload-thumb {
  width: 64px;
  height: 64px;
  flex: 0 0 64px;
  border-radius: 6px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.1);
}

#sourceCanvas {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.upload-copy p {
  margin: 0;
}

#sourceHeadline {
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--label);
}

#sourceFilename {
  margin-top: 4px;
  font-size: 0.75rem;
  color: var(--text);
  line-height: 1.45;
}

.ink-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 7px;
  justify-items: center;
}

.ink-drum {
  position: relative;
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  border: none;
  border-radius: 999px;
  background: radial-gradient(circle at 36% 28%, rgba(255, 255, 255, 0.28) 0%, transparent 36%), var(--drum);
  box-shadow:
    0 4px 8px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    inset 0 -1px 0 rgba(0, 0, 0, 0.2);
  cursor: pointer;
}

.ink-drum.is-active {
  box-shadow:
    0 0 0 2px rgba(232, 227, 219, 0.9),
    0 0 0 4px var(--drum),
    0 4px 8px rgba(0, 0, 0, 0.34);
}

.preset-stack {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.preset-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 9px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  color: var(--text);
  cursor: pointer;
  font-size: 0.63rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.preset-button.is-active {
  border-color: rgba(0, 0, 0, 0.32);
  background: linear-gradient(180deg, #28231f, #15110e);
  color: #f6f0e5;
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.preset-preview {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.preset-preview span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--preset);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
}

/* Hardware-style mode toggle button */
.hw-mode-button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-top: 10px;
  padding: 9px 10px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.09));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    0 1px 0 rgba(255, 255, 255, 0.28);
  cursor: pointer;
  color: var(--text);
}

.hw-mode-button.is-active {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.14), rgba(0, 0, 0, 0.05));
  box-shadow:
    inset 0 2px 5px rgba(0, 0, 0, 0.2),
    0 1px 0 rgba(255, 255, 255, 0.12);
}

.hw-mode-led {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #2e2a27;
  box-shadow: inset 0 1px 0 rgba(0, 0, 0, 0.3);
  flex-shrink: 0;
}

.hw-mode-button.is-active .hw-mode-led {
  background: #42d469;
  box-shadow: 0 0 7px rgba(66, 212, 105, 0.75);
}

.hw-mode-text {
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--label);
}

.hw-mode-button.is-active .hw-mode-text {
  color: var(--text);
}

/* Drum count mode toggle (2 / 3) */
.drum-mode {
  display: flex;
  border: 1px solid rgba(0, 0, 0, 0.16);
  border-radius: 6px;
  overflow: hidden;
}

.drum-mode-btn {
  padding: 2px 8px;
  border: none;
  background: transparent;
  font: inherit;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--label);
  cursor: pointer;
}

.drum-mode-btn + .drum-mode-btn {
  border-left: 1px solid rgba(0, 0, 0, 0.14);
}

.drum-mode-btn.is-active {
  background: rgba(0, 0, 0, 0.18);
  color: var(--text);
}

/* Collapsible advanced block */
.adv-block {
  padding-bottom: 0;
}

.adv-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 0;
  margin-bottom: 0;
  border: none;
  background: none;
  font: inherit;
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--label);
  cursor: pointer;
}

.adv-chevron {
  font-size: 10px;
  line-height: 1;
  transition: transform 160ms ease;
  opacity: 0.6;
}

.adv-toggle[aria-expanded="true"] .adv-chevron {
  transform: rotate(180deg);
}

.adv-body {
  padding-top: 10px;
}

/* Saved presets list */
.saved-presets-list {
  list-style: none;
  margin: 0 0 6px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.saved-preset-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
}

.saved-preset-name {
  flex: 1;
  min-width: 0;
  padding: 0;
  border: none;
  background: none;
  font: inherit;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.saved-preset-name:hover {
  color: var(--label);
}

.saved-preset-delete {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--label);
  cursor: pointer;
  font-size: 0.8rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.5;
}

.saved-preset-delete:hover {
  opacity: 1;
  background: rgba(0, 0, 0, 0.1);
}

/* Preset name input + save row */
.preset-save-row {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
}

.preset-name-input {
  flex: 1;
  min-width: 0;
  height: 32px;
  padding: 0 8px;
  border: 1px solid rgba(0, 0, 0, 0.16);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.16);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24);
  color: var(--text);
  font: inherit;
  font-size: 0.7rem;
}

.preset-name-input::placeholder {
  color: var(--label);
  opacity: 0.7;
}

.preset-save-btn {
  flex-shrink: 0;
  height: 32px;
  padding: 0 10px;
  border: 1px solid rgba(0, 0, 0, 0.16);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.preset-save-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.control-group,
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-group + .control-group,
.slider-group + .slider-group,
.control-group + .slider-group,
.slider-group + .control-group {
  margin-top: 10px;
}

.control-group label,
.slider-group label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--label);
}

select,
input[type="range"],
.primary-button,
.secondary-button {
  width: 100%;
  border: 1px solid rgba(0, 0, 0, 0.16);
  border-radius: 8px;
  min-height: 40px;
  background: rgba(255, 255, 255, 0.16);
  color: var(--text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

select {
  padding: 0 10px;
}

input[type="range"] {
  margin: 0;
  accent-color: #23201d;
}

.panel-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.primary-button,
.secondary-button {
  padding: 0 14px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
}

.primary-button {
  background: linear-gradient(180deg, #2c2824, #100d0b);
  color: #f6f0e5;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.secondary-button {
  background: rgba(255, 255, 255, 0.12);
}

.primary-button:disabled,
.secondary-button:disabled {
  opacity: 0.42;
  cursor: default;
}

.preview-panel {
  display: flex;
  flex-direction: column;
  padding-left: 14px;
  min-height: 0;
  overflow: hidden;
}

.preview-rail {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 22px;
  margin-bottom: 12px;
  font-size: 0.67rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--label);
}

.preview-lights {
  display: flex;
  gap: 6px;
}

.light {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #2e2a27;
  box-shadow: inset 0 1px 0 rgba(0, 0, 0, 0.2);
}

.light.idle {
  background: #42d469;
  box-shadow: 0 0 8px rgba(66, 212, 105, 0.7);
}

.light.active {
  background: #ffbe34;
  box-shadow: 0 0 8px rgba(255, 190, 52, 0.85);
}

.paper-stage {
  flex: 1;
  min-height: 0;
  padding: 12px;
  border-radius: 14px;
  background: linear-gradient(180deg, #aca79d, #b7b2a9);
  box-shadow: inset 0 4px 14px rgba(0, 0, 0, 0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.paper-sheet {
  --paper-aspect: 210 / 297;
  --paper-ratio: 0.707;
  --paper-scale: 0.9;
  position: relative;
  display: grid;
  place-items: center;
  width: min(calc(100% * var(--paper-scale)), calc((100vh - 196px) * var(--paper-ratio) * var(--paper-scale)));
  max-height: calc(100vh - 196px);
  height: auto;
  flex-shrink: 0;
  overflow: hidden;
  border-radius: 3px;
  background: var(--paper);
  aspect-ratio: var(--paper-aspect);
  box-shadow:
    0 12px 32px var(--paper-shadow),
    0 2px 8px rgba(0, 0, 0, 0.12),
    inset 0 0 0 1px rgba(0, 0, 0, 0.04);
}

#outputCanvas {
  max-width: 100%;
  max-height: 100%;
  display: block;
}

#outputCanvas.is-zoomable {
  cursor: zoom-in;
}

.paper-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 32px;
  text-align: center;
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  line-height: 2;
  color: rgba(0, 0, 0, 0.2);
}

.paper-placeholder.is-hidden {
  display: none;
}

.preview-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 18px;
  padding-top: 12px;
  flex-shrink: 0;
  min-height: 44px;
}

.swatch-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  min-width: 0;
}

.swatch-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.28);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.swatch-chip-mode {
  background: linear-gradient(90deg, rgba(22, 18, 15, 0.88), rgba(242, 236, 226, 0.8));
  color: #201b17;
}

.swatch-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--swatch);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
}

.preview-note {
  margin: 0;
  max-width: 260px;
  flex-shrink: 0;
  font-size: 0.68rem;
  line-height: 1.55;
  color: var(--label);
  text-align: right;
}

/* Reset defaults button */
.reset-button {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 7px 14px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  background: transparent;
  color: var(--label);
  cursor: pointer;
  font: inherit;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-align: center;
  transition: background-color 120ms ease, color 120ms ease;
}

.reset-button:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--text);
}


/* Fullscreen zoom overlay */
.zoom-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(20, 16, 12, 0.88);
  display: grid;
  place-items: center;
  cursor: zoom-out;
  padding: 28px;
  animation: overlayIn 140ms ease;
}

@keyframes overlayIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.zoom-overlay img {
  max-width: calc(100vw - 56px);
  max-height: calc(100vh - 56px);
  width: auto;
  height: auto;
  display: block;
  object-fit: contain;
  border-radius: 3px;
  box-shadow:
    0 32px 100px rgba(0, 0, 0, 0.7),
    0 4px 16px rgba(0, 0, 0, 0.4);
  animation: zoomImgIn 160ms ease;
}

@keyframes zoomImgIn {
  from {
    transform: scale(0.96);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@media (max-width: 980px) {
  body {
    padding: 12px;
    overflow: auto;
  }

  .machine {
    grid-template-columns: 1fr;
    height: auto;
  }

  .control-panel {
    padding-right: 0;
    padding-bottom: 18px;
    border-right: 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    overflow: visible;
  }

  .control-panel::after {
    display: none;
  }

  .preview-panel {
    padding-left: 0;
    padding-top: 14px;
    overflow: visible;
  }

  .paper-stage {
    min-height: 420px;
  }

  .paper-sheet {
    width: min(calc(100% * var(--paper-scale)), calc(420px * var(--paper-ratio) * var(--paper-scale)));
    max-height: 420px;
  }
}

@media (max-width: 720px) {
  .machine-header,
  .preview-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-meta,
  .preview-note {
    text-align: left;
    max-width: 100%;
  }

  .panel-actions {
    grid-template-columns: 1fr;
  }

  .paper-stage {
    min-height: 360px;
  }

  .paper-sheet {
    width: min(calc(100% * var(--paper-scale)), calc(360px * var(--paper-ratio) * var(--paper-scale)));
    max-height: 360px;
  }
}