/* ============================================================
   CARBOTURA ENGINEERING PORTAL — diagrams.css
   Acronym tooltips · Diagram wrappers · Placeholders · Mermaid
   ============================================================ */

/* ── Acronym terms ─────────────────────────────────────────── */
abbr.acr-term {
  text-decoration: underline dotted var(--c-emerald);
  text-underline-offset: 3px;
  cursor: help;
  color: inherit;
  font-style: normal;
}

abbr.acr-first {
  font-weight: 600;
  color: inherit;
}

abbr.acr-seen {
  /* Repeat occurrences — lighter underline only */
  text-decoration-color: rgba(0,182,122,0.4);
  font-weight: inherit;
}

/* ── Acronym tooltip ───────────────────────────────────────── */
#acr-tooltip {
  position: absolute;
  z-index: 9999;
  background: var(--c-navy);
  border: 1px solid var(--c-navy-light);
  border-left: 3px solid var(--c-emerald);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  width: min(300px, 90vw);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  pointer-events: none;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 140ms ease, transform 140ms ease;
}

#acr-tooltip.visible {
  pointer-events: all;
  opacity: 1;
  transform: translateY(0);
}

.acr-tt-term {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--c-emerald);
  margin-bottom: 0.35rem;
  letter-spacing: 0.06em;
}

.acr-tt-def {
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--c-gray-200);
}

.acr-tt-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.72rem;
  color: var(--c-emerald);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.acr-tt-link:hover { text-decoration: underline; }


/* ── Diagram wrapper ───────────────────────────────────────── */
.diagram-wrap {
  margin: 1.5rem 0;
  background: var(--c-white);
  border: 1px solid var(--c-gray-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.diagram-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1rem;
  background: var(--c-gray-50);
  border-bottom: 1px solid var(--c-gray-200);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.diagram-header-left {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.diagram-id {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-gray-400);
  background: var(--c-gray-100);
  padding: 1px 6px;
  border-radius: 3px;
}

.diagram-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-navy);
}

.diagram-type {
  font-size: 0.68rem;
  color: var(--c-gray-400);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.diagram-body {
  padding: 1.5rem;
  overflow-x: auto;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mermaid overrides for portal theme */
.diagram-body .mermaid {
  width: 100%;
  max-width: 100%;
}

.diagram-body svg {
  max-width: 100%;
  height: auto;
}

.diagram-caption {
  padding: 0.5rem 1rem 0.75rem;
  font-size: 0.75rem;
  color: var(--c-gray-400);
  border-top: 1px solid var(--c-gray-100);
  font-style: italic;
}


/* ── Diagram placeholder (diagram needed) ──────────────────── */
.diagram-placeholder {
  margin: 1.5rem 0;
  background: var(--c-white);
  border: 2px dashed var(--c-amber);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.diagram-placeholder-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--c-amber-pale);
  border-bottom: 1px solid rgba(250,204,21,0.3);
}

.diagram-placeholder-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.diagram-placeholder-meta {
  flex: 1;
}

.diagram-placeholder-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: #92650a;
}

.diagram-placeholder-id {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: #b7791f;
}

.diagram-placeholder-body {
  padding: 1.25rem 1rem;
  font-size: 0.875rem;
  color: var(--c-gray-600);
  line-height: 1.6;
}

.diagram-placeholder-spec {
  background: var(--c-gray-50);
  border: 1px solid var(--c-gray-200);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
}

.diagram-placeholder-spec dt {
  font-weight: 700;
  color: var(--c-navy);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 0.4rem;
}

.diagram-placeholder-spec dd {
  color: var(--c-gray-600);
  margin: 0 0 0.2rem 0;
}

.diagram-placeholder-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--c-amber-pale);
  border-top: 1px solid rgba(250,204,21,0.3);
  font-size: 0.72rem;
  color: #92650a;
  font-weight: 600;
}

.diagram-placeholder-footer .request-id {
  font-family: var(--font-mono);
}

/* ── Inline chart containers ───────────────────────────────── */
.chart-wrap {
  margin: 1.5rem 0;
  background: var(--c-white);
  border: 1px solid var(--c-gray-200);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.chart-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--c-navy);
  margin-bottom: 1rem;
  text-align: center;
}

.chart-canvas-wrap {
  position: relative;
  height: 320px;
}

/* ── Mermaid theme overrides ───────────────────────────────── */
:root {
  --mermaid-font-family: var(--font-sans);
}

/* Node fills — match portal navy/emerald palette */
.mermaid .node rect,
.mermaid .node circle,
.mermaid .node polygon {
  fill: #EBF5FB;
  stroke: var(--c-navy);
  stroke-width: 1.5px;
}

.mermaid .node.special rect {
  fill: var(--c-emerald-pale);
  stroke: var(--c-emerald);
}

.mermaid .edgeLabel {
  background-color: #fff;
  font-size: 11px;
}

.mermaid .label {
  font-family: var(--font-sans);
  font-size: 12px;
}

/* State diagram highlights */
.mermaid .statediagram-state rect.basic {
  fill: #EBF5FB;
  stroke: var(--c-navy);
}

.mermaid .stateGroup .composit {
  fill: var(--c-emerald-pale);
}


/* ── Diagram viewer controls ───────────────────────────────── */
.diag-ctrl-group {
  display: flex;
  align-items: center;
  gap: .35rem;
  margin-left: auto;
}

.diag-ctrl-btn {
  width: 28px;
  height: 28px;
  border-radius: 5px;
  border: 1px solid var(--c-gray-200);
  background: var(--c-white);
  color: var(--c-gray-500);
  font-size: .85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 120ms ease;
}

.diag-ctrl-btn:hover {
  background: var(--c-navy);
  color: var(--c-white);
  border-color: var(--c-navy);
}

/* ── Full-screen modal ─────────────────────────────────────── */
#diag-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: stretch;
}

.diag-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 22, 40, 0.88);
  backdrop-filter: blur(4px);
}

.diag-modal-panel {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  background: #0D1F35;
}

.diag-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 1.25rem;
  background: var(--c-navy);
  border-bottom: 2px solid var(--c-emerald);
  flex-shrink: 0;
  gap: 1rem;
}

.diag-modal-title {
  font-size: .9rem;
  font-weight: 700;
  color: var(--c-white);
  display: flex;
  align-items: center;
  gap: .6rem;
}

.diag-modal-id {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--c-emerald);
  background: rgba(0,182,122,.15);
  padding: 2px 6px;
  border-radius: 3px;
}

.diag-modal-controls {
  display: flex;
  align-items: center;
  gap: .4rem;
  flex-shrink: 0;
}

.diag-modal-btn {
  height: 30px;
  min-width: 30px;
  padding: 0 .5rem;
  border-radius: 5px;
  border: 1px solid rgba(255,255,255,.15);
  background: rgba(255,255,255,.06);
  color: var(--c-gray-300);
  font-size: .85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 120ms ease;
  font-family: var(--font-sans);
}

.diag-modal-btn:hover {
  background: rgba(0,182,122,.2);
  border-color: var(--c-emerald);
  color: var(--c-white);
}

.diag-modal-close {
  border-color: rgba(255,255,255,.25);
}

.diag-zoom-label {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--c-emerald);
  min-width: 42px;
  text-align: center;
}

.diag-modal-body {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.diag-modal-canvas {
  width: 100%;
  height: 100%;
  overflow: hidden;
  cursor: grab;
  position: relative;
}

.diag-modal-canvas:active { cursor: grabbing; }

.diag-modal-content {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: top left;
  transition: transform 80ms ease;
}

.diag-modal-content svg {
  display: block;
  max-width: none !important;
}

.diag-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .4rem 1.25rem;
  background: rgba(0,0,0,.3);
  border-top: 1px solid rgba(255,255,255,.05);
  font-size: .7rem;
  color: rgba(255,255,255,.35);
  flex-shrink: 0;
}