:root {
  color-scheme: light;
  --ink: #191919;
  --muted: #656565;
  --line: #d8d5ce;
  --paper: #f5f3ee;
  --panel: #ffffff;
  --accent: #334d5c;
  --ok: #235f48;
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--paper);
  color: var(--ink);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
}

button, input, select, textarea { font: inherit; }

button {
  min-height: 2.5rem;
  border: 1px solid var(--ink);
  border-radius: 0.35rem;
  padding: 0.55rem 0.8rem;
  background: var(--ink);
  color: #fff;
  cursor: pointer;
}

button:hover { background: #343434; }
button:focus-visible, input:focus-visible, summary:focus-visible { outline: 3px solid #87a9bd; outline-offset: 2px; }

button.secondary {
  background: transparent;
  color: var(--ink);
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.app-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--line);
  background: rgba(245, 243, 238, 0.96);
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0.15rem; font-size: clamp(1.35rem, 2.4vw, 2.2rem); letter-spacing: -0.03em; }
h2 { margin-bottom: 0.75rem; font-size: 0.86rem; letter-spacing: 0.08em; text-transform: uppercase; }

.eyebrow {
  margin-bottom: 0.25rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.subtitle { margin-bottom: 0; color: var(--muted); font-size: 0.85rem; }

.header-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: flex-end; }

.workspace {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(23rem, 29rem);
}

.viewport-panel {
  position: sticky;
  top: 0;
  min-height: 34rem;
  height: calc(100vh - 6.1rem);
  overflow: hidden;
  background: #e6e3dc;
  border-right: 1px solid var(--line);
}

#viewport {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: grab;
}

#viewport:active { cursor: grabbing; }

.viewport-status, .model-note {
  position: absolute;
  left: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.65rem;
  align-items: center;
  pointer-events: none;
  font-size: 0.75rem;
}

.viewport-status { top: 7.2rem; color: #222; flex-wrap: wrap; }

.mode-bar {
  position: absolute;
  z-index: 2;
  top: 0.75rem;
  left: 0.75rem;
  right: 0.75rem;
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.mode-bar button {
  min-height: 2rem;
  padding: 0.36rem 0.56rem;
  border-color: rgba(0, 0, 0, 0.38);
  background: rgba(255, 255, 255, 0.9);
  color: #222;
  font-size: 0.68rem;
}

.mode-bar button[aria-pressed="true"] {
  border-color: #fff;
  background: var(--ink);
  color: #fff;
}

.inspection-bar {
  position: absolute;
  z-index: 2;
  top: 3.25rem;
  left: 0.75rem;
  right: 0.75rem;
  display: flex;
  gap: 0.5rem;
  align-items: center;
  overflow-x: auto;
  padding-bottom: 0.2rem;
}

.navigation-modes, .standard-views { display: flex; flex: 0 0 auto; gap: 0.28rem; }
.inspection-bar button {
  min-height: 1.85rem;
  padding: 0.3rem 0.48rem;
  border-color: rgba(0, 0, 0, 0.38);
  background: rgba(255, 255, 255, 0.9);
  color: #222;
  font-size: 0.62rem;
  white-space: nowrap;
}
.inspection-bar button[aria-pressed="true"] { border-color: #fff; background: var(--accent); color: #fff; }

#orientation-triad {
  position: absolute;
  right: 1rem;
  bottom: 3.6rem;
  z-index: 2;
  width: 92px;
  height: 92px;
  border: 1px solid rgba(255, 255, 255, 0.48);
  border-radius: 50%;
  background: rgba(20, 20, 20, 0.62);
  pointer-events: none;
}

.navigation-help { padding: 0 0.8rem 0.55rem; color: var(--muted); font-size: 0.68rem; line-height: 1.45; }
.navigation-help p { margin-bottom: 0.3rem; }
.free-view-controls { padding: 0 0.8rem 0.7rem; }
.compact-readout { display: grid; grid-template-columns: auto 1fr; gap: 0.2rem 0.55rem; margin: 0.45rem 0 0; font-size: 0.66rem; }
.compact-readout dt { color: var(--muted); }
.compact-readout dd { margin: 0; font-family: Consolas, monospace; overflow-wrap: anywhere; }

.split-labels {
  position: absolute;
  z-index: 1;
  top: 7.25rem;
  left: 0;
  right: 0;
  grid-template-columns: 1fr 1fr;
  pointer-events: none;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  text-align: center;
  text-shadow: 0 1px 3px #000;
}

.split-labels:not([hidden]) { display: grid; }

.physical-warning {
  position: absolute;
  z-index: 2;
  top: 7rem;
  left: 1rem;
  right: 1rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid #fff;
  background: rgba(120, 0, 40, 0.92);
  color: #fff;
  font-size: 0.75rem;
  line-height: 1.4;
}

.model-note {
  bottom: 1rem;
  right: auto;
  max-width: 38rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid rgba(255,255,255,0.5);
  background: rgba(20, 20, 20, 0.82);
  color: white;
  line-height: 1.4;
}

.status-chip {
  display: inline-block;
  border-radius: 999px;
  padding: 0.3rem 0.55rem;
  background: #fff;
  border: 1px solid rgba(0,0,0,0.2);
  font-weight: 700;
}

.status-chip.ok { color: var(--ok); }
.status-chip.error { color: #8a2424; }
.status-chip.warning { color: #8a2424; background: #fff2f3; }

.controls-panel {
  overflow-y: auto;
  height: calc(100vh - 6.1rem);
  padding: 1rem;
  background: var(--panel);
}

.readout, details, .conventions {
  margin-bottom: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: #fff;
}

.readout, .conventions { padding: 0.8rem; }

.section-heading-row { display: flex; justify-content: space-between; align-items: baseline; gap: 0.75rem; }
.preset-label { color: var(--muted); font-size: 0.72rem; }

.readout dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.28rem 0.8rem;
  margin: 0;
  font-size: 0.76rem;
}

.readout dt { color: var(--muted); }
.readout dd { margin: 0; font-variant-numeric: tabular-nums; text-align: right; }

details summary {
  padding: 0.7rem 0.8rem;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
  user-select: none;
}

details[open] summary { border-bottom: 1px solid var(--line); }

.control-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; padding: 0.8rem; }
.control-grid.single-row { padding-top: 0; }
.control { min-width: 0; display: grid; gap: 0.3rem; }
.control > span { display: flex; justify-content: space-between; gap: 0.5rem; font-size: 0.74rem; font-weight: 600; }
.control output { color: var(--accent); font-variant-numeric: tabular-nums; }
.control small, .help { color: var(--muted); font-size: 0.66rem; }
.control input[type="range"] { width: 100%; accent-color: var(--accent); }

.input-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 4.8rem;
  gap: 0.45rem;
  align-items: center;
}

.numeric-input {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  padding: 0.25rem 0.35rem;
  color: var(--ink);
  background: #fff;
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
}

.color-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.65rem; padding: 0.8rem 0.8rem 0.4rem; }
.color-grid label { display: grid; gap: 0.35rem; font-size: 0.68rem; }
.color-grid input { width: 100%; min-height: 2rem; border: 1px solid var(--line); background: transparent; }
.help { margin: 0; padding: 0 0.8rem 0.8rem; line-height: 1.35; }

.enable-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  padding: 0.75rem 0.8rem 0;
  font-size: 0.76rem;
  font-weight: 700;
}

.probe-summary {
  margin-top: 0.7rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--line);
  color: var(--ok);
  font-size: 0.7rem;
  line-height: 1.4;
}

.probe-summary.error { color: #8a2424; }

.metadata-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 0.65rem;
  padding: 0.8rem;
}

.raster-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  padding: 0.8rem;
}

.vector-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  padding: 0.8rem;
}

.vector-controls label {
  display: flex;
  gap: 0.45rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.7rem;
}

.vector-controls label:has(select) { display: grid; gap: 0.3rem; }
.vector-controls select { width: 100%; border: 1px solid var(--line); border-radius: 0.25rem; padding: 0.38rem; background: #fff; color: var(--ink); }
.vector-actions { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0 0.8rem 0.7rem; }
.vector-actions button { min-height: 2.1rem; padding: 0.4rem 0.6rem; font-size: 0.7rem; }
.vector-message { margin: 0 0.8rem 0.7rem; padding: 0.55rem 0.65rem; border: 1px solid var(--line); border-radius: 0.3rem; color: var(--muted); font-size: 0.68rem; line-height: 1.45; }
.vector-message.ok { border-color: #4e8b70; color: var(--ok); background: #f0faf5; }
.vector-message.error { border-color: #b53d4c; color: #8a2424; background: #fff2f3; font-weight: 700; }

.raster-controls label {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.35rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.7rem;
}

.raster-controls input, .raster-controls select {
  width: 6.2rem;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  padding: 0.38rem;
  background: #fff;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.raster-controls select { width: 9.2rem; }

.raster-budget, .sampling-warning {
  margin: 0 0.8rem 0.65rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  background: #f8f8f6;
  font-size: 0.68rem;
  line-height: 1.45;
}

.raster-budget.error, .sampling-warning.high-risk { border-color: #b53d4c; color: #8a2424; background: #fff2f3; }
.sampling-warning.caution { border-color: #a67618; color: #6b4b0c; background: #fff8e8; }
.sampling-warning.safe { border-color: #4e8b70; color: var(--ok); background: #f0faf5; }

.comparison-results { padding: 0 0.8rem 0.8rem; }
.comparison-results .help { padding: 0 0 0.55rem; }
.comparison-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.45rem; }
.comparison-grid figure { min-width: 0; margin: 0; }
.comparison-grid figcaption { margin-bottom: 0.3rem; font-size: 0.68rem; font-weight: 700; }
.comparison-grid canvas { display: block; width: 100%; aspect-ratio: var(--raster-aspect, 1.6); border: 1px solid var(--line); image-rendering: auto; }
.comparison-grid output { display: block; padding-top: 0.3rem; color: var(--muted); font-size: 0.6rem; line-height: 1.35; }

.export-links { display: grid; gap: 0.3rem; margin: 0 0.8rem 0.8rem; padding: 0.65rem; border: 1px solid var(--line); background: #f8f8f6; }
.export-links p { margin: 0 0 0.25rem; font-size: 0.68rem; font-weight: 700; }
.export-links a { color: var(--accent); font-size: 0.66rem; overflow-wrap: anywhere; }

.metadata-grid label {
  display: grid;
  gap: 0.3rem;
  color: var(--muted);
  font-size: 0.68rem;
}

.metadata-grid input, .metadata-grid select, #configuration-json {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  padding: 0.42rem 0.5rem;
  background: #fff;
  color: var(--ink);
}

.config-actions { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0 0.8rem 0.7rem; }
.config-actions button { min-height: 2.1rem; padding: 0.4rem 0.6rem; font-size: 0.7rem; }
#configuration-json { display: block; width: calc(100% - 1.6rem); margin: 0 0.8rem; resize: vertical; font: 0.68rem/1.45 Consolas, monospace; }
.config-message { margin: 0; padding: 0.55rem 0.8rem 0.8rem; color: var(--muted); font-size: 0.68rem; }
.config-message.error { color: #8a2424; font-weight: 700; }
.config-message.ok { color: var(--ok); }

.conventions ul { margin: 0; padding-left: 1.15rem; color: var(--muted); font-size: 0.72rem; line-height: 1.5; }

@media (max-width: 820px) {
  .app-header { align-items: flex-start; padding: 0.8rem; }
  .workspace { display: block; }
  .viewport-panel { position: relative; height: 56svh; min-height: 24rem; border-right: 0; border-bottom: 1px solid var(--line); }
  .controls-panel { height: auto; overflow: visible; padding: 0.8rem; }
}

@media (max-width: 560px) {
  .app-header { display: grid; }
  .header-actions { justify-content: flex-start; }
  .control-grid { grid-template-columns: 1fr; }
  .metadata-grid { grid-template-columns: 1fr; }
  .raster-controls, .comparison-grid, .vector-controls { grid-template-columns: 1fr; }
  .viewport-status { align-items: flex-start; flex-direction: column; }
  .model-note { right: 0.7rem; left: 0.7rem; }
  .mode-bar { right: 0.5rem; left: 0.5rem; }
  .inspection-bar { top: 5.8rem; }
  .viewport-status { top: 8.6rem; }
  .physical-warning { top: 12rem; }
  .split-labels { top: 12.1rem; }
  #orientation-triad { width: 76px; height: 76px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}

/* Real download links form a compact ordered column. Stale items have no href. */
#vector-links { display: grid; grid-template-columns: 1fr; gap: 0.3rem; }
#vector-links[hidden] { display: none; }
#vector-links a[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; text-decoration: none; }