:root {
  color-scheme: light;
  --bg: #f3efe7;
  --surface: #fffcf5;
  --surface-strong: #ffffff;
  --text: #1d2120;
  --muted: #5d6761;
  --line: #d7cec0;
  --line-strong: #9aa69b;
  --accent: #17735c;
  --accent-strong: #0e5b48;
  --accent-soft: #dcefe8;
  --warning: #9c4617;
  --error: #b42318;
  --shadow: 0 16px 45px rgba(31, 38, 34, 0.09);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

button,
textarea {
  font: inherit;
}

button {
  min-height: 36px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface-strong);
  color: var(--text);
  cursor: pointer;
  font-weight: 700;
  line-height: 1;
  padding: 0 12px;
}

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

button:focus-visible,
textarea:focus-visible,
.graph-viewport:focus-visible,
.diagram-canvas path[tabindex]:focus-visible,
.diagram-canvas g[tabindex]:focus-visible {
  outline: 3px solid rgba(23, 115, 92, 0.28);
  outline-offset: 2px;
}

button:disabled {
  cursor: wait;
  opacity: 0.62;
}

.primary-button {
  border-color: var(--accent-strong);
  background: var(--accent);
  color: #ffffff;
}

.primary-button:hover {
  background: var(--accent-strong);
  color: #ffffff;
}

.shell {
  width: min(100%, 1540px);
  margin: 0 auto;
  padding: 20px;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 16px;
}

.title-block {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(1.55rem, 4vw, 2.35rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 0.95rem;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 14px;
  font-size: 1rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

h4 {
  margin: 18px 0 8px;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.counters {
  display: grid;
  grid-template-columns: repeat(2, minmax(96px, 1fr));
  gap: 8px;
}

.counter {
  min-width: 96px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 252, 245, 0.82);
  padding: 10px 12px;
}

.counter strong {
  display: block;
  font-size: 1.45rem;
  line-height: 1;
}

.counter span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(420px, 1fr) minmax(270px, 340px);
  gap: 14px;
  align-items: stretch;
}

.panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-head {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.58);
  padding: 10px 12px;
}

.button-row,
.zoom-tools {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.zoom-tools button {
  min-width: 38px;
}

.zoom-tools output {
  min-width: 52px;
  color: var(--muted);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.source-panel {
  display: grid;
  grid-template-rows: auto minmax(440px, 1fr) auto;
}

#source-input {
  width: 100%;
  min-width: 0;
  height: 100%;
  resize: none;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: #1f2422;
  color: #f7f4ee;
  padding: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.82rem;
  line-height: 1.45;
  tab-size: 2;
  white-space: pre;
}

.status-line {
  min-height: 42px;
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.35;
  padding: 10px 12px;
}

.status-line[data-state="ok"] {
  color: var(--accent-strong);
}

.status-line[data-state="busy"] {
  color: var(--warning);
}

.status-line[data-state="error"] {
  color: var(--error);
}

.graph-panel {
  display: grid;
  grid-template-rows: auto minmax(620px, calc(100vh - 152px));
}

.graph-head {
  align-items: center;
}

.graph-viewport {
  position: relative;
  min-width: 0;
  overflow: auto;
  overscroll-behavior: contain;
  background:
    linear-gradient(90deg, rgba(29, 33, 32, 0.045) 1px, transparent 1px) 0 0 / 26px 26px,
    linear-gradient(rgba(29, 33, 32, 0.045) 1px, transparent 1px) 0 0 / 26px 26px,
    #fbfaf6;
  cursor: grab;
  touch-action: none;
}

.graph-viewport.is-dragging {
  cursor: grabbing;
}

.diagram-canvas {
  min-width: 100%;
  min-height: 100%;
  padding: 16px;
}

.diagram-canvas svg {
  display: block;
  max-width: none;
  height: auto;
  overflow: visible;
}

.diagram-canvas path.relation,
.diagram-canvas path[data-edge="true"],
.diagram-canvas g.edgeLabel {
  cursor: pointer;
}

.diagram-canvas .edge-hit-target {
  fill: none !important;
  stroke: transparent !important;
  stroke-width: 22px !important;
  pointer-events: stroke;
}

.diagram-canvas path.relation.is-selected,
.diagram-canvas path[data-edge="true"].is-selected {
  stroke: var(--accent) !important;
  stroke-width: 3.5px !important;
}

.diagram-canvas g.edgeLabel.is-selected text {
  fill: var(--accent-strong) !important;
  font-weight: 800 !important;
}

.diagram-canvas .edge-import-label {
  pointer-events: none;
}

.diagram-canvas .edge-import-label rect {
  fill: #f4fff9;
  stroke: var(--accent);
  stroke-width: 1.4;
  filter: drop-shadow(0 8px 15px rgba(23, 115, 92, 0.18));
}

.diagram-canvas .edge-import-label text {
  fill: #163329;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  font-weight: 700;
}

.details-panel {
  align-self: stretch;
}

.details-body {
  max-height: calc(100vh - 152px);
  overflow: auto;
  padding: 14px;
}

.empty-state {
  margin: 0;
  color: var(--muted);
}

.detail-rows {
  display: grid;
  gap: 8px;
}

.detail-row {
  display: grid;
  gap: 4px;
}

.detail-row span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

code {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.6);
  color: #242826;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.82rem;
  line-height: 1.45;
  padding: 6px 7px;
  overflow-wrap: anywhere;
}

.import-list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.import-list li {
  border: 1px solid var(--line);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.62);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.82rem;
  line-height: 1.35;
  padding: 7px 8px;
  overflow-wrap: anywhere;
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: minmax(280px, 0.82fr) minmax(420px, 1.18fr);
  }

  .details-panel {
    grid-column: 1 / -1;
  }

  .details-body {
    max-height: 340px;
  }
}

@media (max-width: 760px) {
  .shell {
    padding: 12px;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .counters {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .source-panel {
    grid-template-rows: auto minmax(320px, 50vh) auto;
  }

  .graph-panel {
    grid-template-rows: auto minmax(460px, 62vh);
  }

  .panel-head,
  .graph-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .button-row,
  .zoom-tools {
    width: 100%;
  }

  .button-row button,
  .zoom-tools button {
    flex: 1 1 auto;
  }

  .zoom-tools output {
    flex: 1 0 100%;
    text-align: left;
  }
}