:root {
  color-scheme: dark;
  --bg: #121212;
  --panel: #1b1b1b;
  --panel-soft: #232323;
  --line: #353535;
  --line-strong: #4a4a4a;
  --text: #eeeeea;
  --muted: #a6a49d;
  --accent: #56c7b7;
  --accent-strong: #6fe0cc;
  --warn: #d7a646;
  --danger: #e07865;
  --shadow: 0 16px 42px rgba(0, 0, 0, 0.35);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

button,
input {
  font: inherit;
}

button {
  min-height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #262626;
  color: var(--text);
  padding: 0 12px;
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

button:disabled,
input:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.app-shell {
  display: grid;
  grid-template-rows: 54px minmax(0, 1fr);
  width: 100vw;
  height: 100vh;
  background:
    linear-gradient(90deg, rgba(86, 199, 183, 0.08), transparent 26%),
    var(--bg);
}

.topbar {
  display: grid;
  grid-template-columns: auto auto auto minmax(160px, 1fr);
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(18, 18, 18, 0.96);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 190px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  width: 18px;
  height: 18px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  box-shadow: inset 0 0 0 4px var(--bg);
}

.source-controls,
.toolbar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.file-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #262626;
  color: var(--text);
  padding: 0 12px;
  cursor: pointer;
  white-space: nowrap;
}

.file-button:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.file-button input {
  position: absolute;
  inset: 0;
  width: 100%;
  opacity: 0;
  cursor: pointer;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  color: var(--muted);
  white-space: nowrap;
}

.toggle input {
  accent-color: var(--accent);
}

.status {
  min-width: 0;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: right;
}

.workspace {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr) 380px;
  min-height: 0;
}

.panel {
  min-height: 0;
  overflow: auto;
  border-color: var(--line);
  background: rgba(27, 27, 27, 0.96);
  padding: 14px;
}

.left-panel {
  border-right: 1px solid var(--line);
}

.right-panel {
  border-left: 1px solid var(--line);
}

section + section {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
}

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

.series-list.empty {
  color: var(--muted);
  font-size: 13px;
}

.series-item {
  width: 100%;
  min-height: 62px;
  padding: 9px 10px;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel-soft);
}

.series-item.active {
  border-color: var(--accent);
  box-shadow: inset 3px 0 0 var(--accent);
}

.series-title {
  display: block;
  overflow: hidden;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.series-detail {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.field-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 64px;
  align-items: center;
  gap: 10px;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

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

.number-field {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 13px;
}

.number-field input[type="number"] {
  width: 100%;
  min-height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #111;
  color: var(--text);
  padding: 0 9px;
}

.viewer-pane {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background:
    linear-gradient(0deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    #070707;
  background-size: 28px 28px;
  cursor: crosshair;
}

.viewer-pane.drag-over::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px dashed var(--accent);
  border-radius: 8px;
  pointer-events: none;
}

#viewport {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: auto;
}

.empty-state {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  max-width: min(440px, calc(100% - 40px));
  color: var(--muted);
  font-size: 16px;
  text-align: center;
  pointer-events: none;
}

.empty-state.hidden {
  display: none;
}

.readout {
  position: absolute;
  left: 12px;
  bottom: 12px;
  min-width: 170px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.72);
  color: #f5f0df;
  padding: 7px 9px;
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}

.metadata-list {
  display: grid;
  gap: 9px;
  margin: 0;
}

.metadata-list div {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 8px;
}

.metadata-list dt {
  color: var(--muted);
  font-size: 12px;
}

.metadata-list dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 13px;
}

.lesion-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.lesion-list.empty {
  color: var(--muted);
  font-size: 13px;
}

.lesion-card {
  display: grid;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel-soft);
  padding: 10px;
}

.lesion-card.active {
  border-color: var(--accent);
  box-shadow: inset 3px 0 0 var(--accent);
}

.lesion-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 8px;
}

.lesion-title {
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.lesion-badge {
  border: 1px solid rgba(86, 199, 183, 0.45);
  border-radius: 999px;
  color: var(--accent-strong);
  padding: 2px 7px;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.lesion-preview-row {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 10px;
}

.lesion-preview {
  width: 118px;
  height: 118px;
  border: 1px solid #111;
  border-radius: 4px;
  background: #050505;
  image-rendering: pixelated;
}

.lesion-details {
  display: grid;
  align-content: start;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
}

.lesion-details strong {
  color: var(--text);
  font-weight: 600;
}

.lesion-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
}

.lesion-card button {
  min-height: 30px;
  padding: 0 9px;
  font-size: 12px;
}

.lesion-warning {
  color: var(--warn);
}

@media (max-width: 1120px) {
  .topbar {
    grid-template-columns: 1fr auto;
    grid-auto-rows: auto;
    min-height: 94px;
  }

  .source-controls,
  .toolbar {
    justify-content: flex-end;
  }

  .status {
    grid-column: 1 / -1;
    text-align: left;
  }

  .workspace {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .right-panel {
    display: none;
  }
}

@media (max-width: 760px) {
  body {
    overflow: auto;
  }

  .app-shell {
    min-height: 100vh;
    height: auto;
    grid-template-rows: auto minmax(520px, 1fr);
  }

  .topbar {
    grid-template-columns: 1fr;
  }

  .source-controls,
  .toolbar {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(520px, 70vh);
  }

  .left-panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}