/* MkDocs Material custom primary colour */
[data-md-color-primary="custom"] {
  --md-primary-fg-color:        #2393A9;
  --md-primary-fg-color--light: #d5f0f5;
  --md-primary-fg-color--dark:  #125f70;
  --md-primary-bg-color:        #ffffff;
  --md-primary-bg-color--light: #ffffffb3;
}

[data-md-color-accent="custom"] {
  --md-accent-fg-color:         #2393A9;
  --md-accent-fg-color--transparent: #2393A929;
  --md-accent-bg-color:         #ffffff;
  --md-accent-bg-color--light:  #ffffffb3;
}

:root {
  /* Brand palette — all derived from #2393A9 */
  --color-base:       #2393A9;  /* primary */
  --color-dark:       #1a7a8e;  /* ~15% darker — event tables */
  --color-darker:     #125f70;  /* ~30% darker — text/lines */
  --color-light:      #d5f0f5;  /* light tint — ref header bg */
  --color-light-alt:  #c0e8ef;  /* slightly deeper — event header bg */

  --page-width: min(1200px, calc(100vw - 24px));
  --text: #111827;
  --table-bg: #ffffff;
  --table-header-text: #ffffff;
  --table-row-text: #1f2937;
  --table-radius: 11px;
  --table-border-width: 2px;
  --table-row-height: 22px;
  --shadow: 0 6px 18px rgba(18, 95, 112, 0.12);
  --line-color: var(--color-darker);
  --line-width: 2.5;
  --legend-ref-color:   var(--color-base);
  --legend-event-color: var(--color-dark);
}

* { box-sizing: border-box; }

.md-typeset a:hover { color: #ffffff !important;}

.schema-diagram-root {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", Arial, sans-serif;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  background: transparent;
}

#diagram-wrapper {
  position: relative;
  width: 100%;
  /* cap at 4 columns (146px) + 3 gaps (32px) + side padding */
  max-width: calc(4 * 146px + 3 * 32px + 56px);
  min-height: 420px;
  padding: 12px 44px 44px 12px;
}

#tables-grid {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: center;
  gap: 32px;
}

.schema-column {
  flex: 0 0 146px;
  min-width: 146px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

#connector-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  overflow: visible;
}

/* Table colour themes */
.schema-table--ref {
  --accent: #6b7280;
  --header-bg: #6b7280;
}

.schema-table--primary {
  --accent: var(--color-dark);
  --header-bg: var(--color-dark);
}

.schema-table--event {
  --accent: #e95d20;
  --header-bg: #df6f01;
  --table-header-text: #ffffff;
}

.schema-table--project {
  --accent: #61a239;
  --header-bg: #61a239;
  --table-header-text: #ffffff;
}

.schema-table--infrastructure {
  --accent: #a89a0a;
  --header-bg: #a89a0a;
  --table-header-text: #ffffff;
}

.schema-table--context {
  --accent: #711771;
  --header-bg: #711771;
  --table-header-text: #ffffff;
}

.schema-table {
  border: var(--table-border-width) solid var(--accent);
  border-radius: var(--table-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--table-bg);
}

.schema-title,
.md-typeset .schema-title {
  margin: 0;
  background: var(--header-bg);
  color: var(--table-header-text);
  font-size: 0.85rem;
  line-height: 1.25;
  text-align: center;
  transition: background-color 140ms ease;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
}

.schema-title-content,
.md-typeset .schema-title-content {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 8px;
  text-decoration: none;
  color: var(--table-header-text);
  font-weight: 600;
}

.schema-title-content:hover {
  text-decoration: underline;
}

.schema-title:hover {
  background: color-mix(in srgb, var(--header-bg) 92%, #000 8%);
}

.schema-fields {
  margin: 0;
  padding: 0;
}

.schema-field {
  min-height: var(--table-row-height);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--table-row-text);
  border-top: 1px solid var(--accent);
  padding: 2px 0;
  margin: 0;
  line-height: 1.2;
  font-size: 0.65rem;
  background: #fff;
  transition: background-color 0.15s ease;
  cursor: default;
}

.schema-field:hover {
  background: #f0f0f0;
}

.schema-field--linked-target {
  background: #fff7d6;
  box-shadow: inset 0 0 0 2px #f59e0b;
}

.schema-table {
  transition: opacity 150ms ease, box-shadow 150ms ease;
}

.schema-table--dim {
  opacity: 0.2;
}

.schema-table--highlight {
  box-shadow: 0 0 0 3px var(--color-base), var(--shadow);
}

.schema-field-content {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Key icon via mask so it inherits currentColor */
.schema-pk-icon {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
  background-color: currentColor;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 11.5a3.5 3.5 0 1 1 3.163-5H14L15.5 8 14 9.5l-1-1-1 1-1-1-1 1-1-1-1.837 1.837A3.5 3.5 0 0 1 3.5 11.5zm-1-4a1 1 0 1 0 2 0 1 1 0 0 0-2 0z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 11.5a3.5 3.5 0 1 1 3.163-5H14L15.5 8 14 9.5l-1-1-1 1-1-1-1 1-1-1-1.837 1.837A3.5 3.5 0 0 1 3.5 11.5zm-1-4a1 1 0 1 0 2 0 1 1 0 0 0-2 0z'/%3E%3C/svg%3E");
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-size: contain;
  mask-size: contain;
}

/* SVG connectors */
.connector {
  fill: none;
  stroke: var(--line-color);
  stroke-width: var(--line-width);
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
  transition: opacity 120ms ease, stroke-width 120ms ease;
}

.connector--dim   { opacity: 0.12; }
.connector--active { opacity: 1; stroke-width: calc(var(--line-width) + 1.2); }

/* Legend */
.legend-box {
  position: relative;
  z-index: 2;
  margin: 12px auto 0;
  width: 100%;
  max-width: 100%;
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.95);
  font-size: 0.9rem;
  line-height: 1.4;
}

.legend-title {
  margin: 0 0 8px;
  font-size: 0.95rem;
  font-weight: 700;
}

.legend-items {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-evenly;
  row-gap: 10px;
  column-gap: 20px;
}

.legend-item {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  margin: 0;
  white-space: nowrap;
}

.legend-token {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  min-width: 38px;
  text-align: center;
  border: 1px solid #e5e7eb;
  border-radius: 5px;
  padding: 1px 6px;
  background: #f9fafb;
}

.legend-token--pk {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend-key-icon {
  width: 0.72rem;
  height: 0.72rem;
}

.legend-label { line-height: 1.2; }

.legend-arrow {
  width: 44px;
  height: 0;
  border-top: 2px solid var(--line-color);
  position: relative;
  flex: 0 0 44px;
}

.legend-arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: -4px;
  width: 7px;
  height: 7px;
  border-top: 2px solid var(--line-color);
  border-right: 2px solid var(--line-color);
  transform: rotate(45deg);
  box-sizing: border-box;
}

.legend-swatch {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  vertical-align: -1px;
}

.legend-swatch--ref   { background: var(--legend-ref-color); }
.legend-swatch--event { background: #e95d20; }
.legend-swatch--project { background: #61a239; }
.legend-swatch--infrastructure { background: #a89a0a; }
.legend-swatch--context { background: #711771; }

/* Responsive */
@media (max-width: 600px) {
  #diagram-wrapper { min-height: 340px; padding-right: 20px; }
  #tables-grid { gap: 24px; }
  .schema-column { flex-basis: 100%; gap: 18px; }
}