:root {
  --bg: oklch(95% 0.009 92);
  --ink: oklch(21% 0.025 70);
  --muted: oklch(48% 0.022 70);
  --panel: oklch(98% 0.006 92);
  --line: oklch(84% 0.014 78);
  --accent: oklch(55% 0.14 43);
  --accent-ink: oklch(98% 0.006 92);
  --plate: oklch(99% 0.004 96);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: oklch(97% 0.006 92);
  color: var(--ink);
  padding: 8px 10px;
  cursor: pointer;
}

button:hover {
  border-color: oklch(70% 0.035 68);
}

.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}

.topbar {
  height: 58px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: oklch(97% 0.008 92);
}

.topbar strong {
  display: block;
  font-size: 18px;
}

.topbar span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.app-shell {
  min-height: calc(100vh - 58px);
  display: grid;
  grid-template-columns: 360px 1fr;
}

.panel {
  overflow: auto;
  padding: 16px;
  border-right: 1px solid var(--line);
  background: var(--panel);
}

section + section {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 12px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0;
  color: oklch(35% 0.035 70);
}

label {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
}

input,
select {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: oklch(99% 0.004 96);
  color: var(--ink);
  padding: 8px 9px;
}

input:focus,
select:focus {
  outline: 2px solid oklch(76% 0.09 55);
  outline-offset: 1px;
}

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

.button-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 8px;
}

.inline {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 8px;
  margin-top: 10px;
}

.check {
  grid-template-columns: auto 1fr;
  align-items: center;
  justify-content: start;
}

.info {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
  margin: 10px 0;
  font-size: 13px;
  color: var(--muted);
  background: oklch(96% 0.007 92);
  line-height: 1.45;
}

.saved-list {
  display: grid;
  gap: 8px;
}

.saved-item {
  display: grid;
  gap: 3px;
  text-align: left;
  width: 100%;
}

.saved-item small {
  color: var(--muted);
}

.workspace {
  min-width: 0;
  display: grid;
  grid-template-rows: 44px 1fr;
}

.workspace-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 18px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

#plateLabel {
  color: var(--ink);
  font-weight: 700;
}

.plate-host {
  overflow: auto;
  display: grid;
  place-items: center;
  padding: 26px;
  background:
    linear-gradient(90deg, oklch(87% 0.01 92) 1px, transparent 1px),
    linear-gradient(0deg, oklch(87% 0.01 92) 1px, transparent 1px);
  background-size: 24px 24px;
}

.plate {
  position: relative;
  width: 550px;
  height: 650px;
  background: var(--plate);
  border: 1px solid oklch(62% 0.03 72);
  box-shadow: 0 18px 45px oklch(30% 0.025 70 / 0.18);
  transform-origin: center;
}

.pdf-item {
  position: absolute;
  left: 0;
  top: 0;
  border: 2px solid oklch(47% 0.16 38);
  background: oklch(94% 0.012 92);
  overflow: hidden;
  touch-action: none;
}

.pdf-item.selected {
  outline: 2px solid oklch(68% 0.14 48);
  outline-offset: 2px;
}

.pdf-item object {
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: oklch(98% 0.004 96);
}

.pdf-caption {
  position: absolute;
  left: 6px;
  bottom: 5px;
  max-width: calc(100% - 12px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  border-radius: 4px;
  padding: 3px 5px;
  color: oklch(23% 0.025 70);
  background: oklch(98% 0.006 92 / 0.86);
  font-size: 11px;
}

.colorbar {
  position: absolute;
  z-index: 4;
  background:
    linear-gradient(90deg, cyan 0 14.28%, magenta 14.28% 28.56%, yellow 28.56% 42.84%, black 42.84% 57.12%, red 57.12% 71.4%, green 71.4% 85.68%, blue 85.68% 100%);
  border: 1px solid oklch(22% 0.02 70);
}

.hidden {
  display: none;
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    max-height: none;
  }
}