/* ==========================================================================
   BIS Visual Tokens — Enterprise Consulting Graphics System
   Premium, minimal, diagram-driven visual language
   ========================================================================== */

:root {
  /* Color: Primary (enterprise navy) */
  --color-navy-900: #021228;
  --color-navy-700: #0d2345;
  --color-navy-500: #1a3d6d;
  --color-navy-300: #366a9f;
  --color-navy-100: #e8eff9;

  /* Color: Secondary (professional teal) */
  --color-teal-700: #0d5c55;
  --color-teal-500: #0f857d;
  --color-teal-300: #3cb0a6;
  --color-teal-100: #e3f6f4;

  /* Color: Accent (premium amber/gold for highlights) */
  --color-amber-500: #d4a357;
  --color-amber-300: #eac88a;

  /* Color: Success */
  --color-green-600: #13805c;
  --color-green-100: #e6f4ec;

  /* Color: Status */
  --color-status-good: #0d5c55;
  --color-status-warning: #d4a357;
  --color-status-critical: #b93a32;

  /* Neutrals */
  --color-slate-900: #0f1115;
  --color-slate-700: #2a2d36;
  --color-slate-500: #5e6271;
  --color-slate-300: #8b90a1;
  --color-slate-100: #eaecef;
  --color-white: #ffffff;

  /* Design tokens */
  --font-display: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-body: system-ui, -apple-system, sans-serif;

  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  --text-caption: 0.75rem;
  --text-support: 0.875rem;
  --text-body: 1rem;
  --text-h5: 1.125rem;
  --text-h4: 1.25rem;
  --text-h3: 1.5rem;
  --text-h2: 2rem;
  --text-h1: 2.5rem;

  --spacing-0: 0;
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.5rem;
  --spacing-6: 2rem;
  --spacing-7: 2.5rem;
  --spacing-8: 3rem;
  --spacing-10: 4rem;
  --spacing-12: 5rem;
  --spacing-14: 6rem;
  --spacing-16: 7rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;

  --border-width: 1px;
  --border-style: solid;

  /* SVG stroke colors for diagrams */
  --svg-line: #8b90a1;
  --svg-line-active: #0f857d;
  --svg-fill-primary: #021228;
  --svg-fill-secondary: #e8eff9;
}

/* ==========================================================================
   SVG Components — Diagram System
   ========================================================================== */

.svg-diagram {
  width: 100%;
  height: auto;
  overflow: visible;
}

.svg-diagram__node {
  cursor: default;
}

.svg-diagram__node:hover .svg-diagram__circle,
.svg-diagram__node:hover .svg-diagram__icon {
  transition: all 0.3s ease;
}

.svg-diagram__node:hover .svg-diagram__circle {
  stroke: var(--color-teal-500);
  stroke-width: 2px;
  fill: var(--color-teal-100);
}

.svg-diagram__node:hover .svg-diagram__label {
  fill: var(--color-teal-700);
  font-weight: var(--weight-semibold);
}

.svg-diagram__connection {
  stroke: var(--svg-line);
  stroke-width: 1.5px;
  fill: none;
  transition: stroke 0.3s ease;
}

.svg-diagram__connection--active {
  stroke: var(--color-teal-500);
  stroke-width: 2px;
}

.svg-diagram__connection:hover {
  stroke: var(--color-teal-700);
  stroke-width: 2.5px;
}

.svg-diagram__label {
  fill: var(--color-slate-700);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: var(--weight-semibold);
  text-anchor: middle;
  dominant-baseline: central;
}

.svg-diagram__label-sub {
  fill: var(--color-slate-500);
  font-family: var(--font-body);
  font-size: 0.75rem;
  text-anchor: middle;
}

.svg-diagram__circle {
  stroke: var(--color-navy-300);
  stroke-width: 1.5px;
  fill: var(--color-white);
  transition: all 0.3s ease;
}

.svg-diagram__circle--primary {
  stroke: var(--color-teal-500);
  fill: var(--color-teal-100);
}

.svg-diagram__circle--secondary {
  stroke: var(--color-navy-300);
  fill: var(--color-navy-100);
}

.svg-diagram__circle--accent {
  stroke: var(--color-amber-500);
  fill: var(--color-amber-300);
}

.svg-diagram__arrow {
  stroke: var(--svg-line);
  stroke-width: 1.5px;
  fill: none;
  marker-end: url(#arrowhead);
  transition: stroke 0.3s ease;
}

.svg-diagram__arrow--active {
  stroke: var(--color-teal-500);
  stroke-width: 2px;
}

.svg-diagram__arrow--active:hover {
  stroke: var(--color-teal-700);
}

.svg-diagram__icon {
  fill: var(--color-slate-700);
  transition: fill 0.3s ease;
}

.svg-diagram__node:hover .svg-diagram__icon {
  fill: var(--color-teal-700);
}

.svg-diagram__tooltip {
  position: absolute;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 100;
}

.svg-diagram__tooltip.visible {
  opacity: 1;
}

.svg-diagram__tooltip-content {
  background: var(--color-slate-900);
  color: var(--color-white);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  line-height: 1.4;
  max-width: 220px;
  box-shadow: 0 4px 12px rgba(15, 17, 21, 0.15);
}

/* ==========================================================================
   Enterprise Graphics System
   ========================================================================== */

.graphics-system {
  --gs-gap: 2rem;
  --gs-card-padding: 1.5rem;
  --gs-card-radius: var(--radius-lg);
  --gs-card-bg: var(--color-white);
  --gs-card-border: 1px solid var(--color-slate-100);
}

.graphics-card {
  background: var(--gs-card-bg);
  border: var(--gs-card-border);
  border-radius: var(--gs-card-radius);
  padding: var(--gs-card-padding);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.graphics-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(15, 17, 21, 0.05);
}

.graphics-card__visual {
  margin-bottom: var(--spacing-4);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-slate-100);
}

.graphics-card__title {
  margin: 0 0 var(--spacing-2) 0;
  font-size: var(--text-h4);
  font-weight: var(--weight-semibold);
  color: var(--color-navy-900);
}

.graphics-card__description {
  margin: 0;
  font-size: var(--text-body);
  color: var(--color-slate-700);
  line-height: 1.6;
}

/* ==========================================================================
   Dashboard Card — For Trust/Credibility Section
   ========================================================================== */

.dashboard-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  border: 1px solid var(--color-slate-100);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.dashboard-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(15, 17, 21, 0.08);
}

.dashboard-card__icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-3);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-teal-100);
  border-radius: var(--radius-xl);
  color: var(--color-teal-700);
}

.dashboard-card__icon svg {
  width: 32px;
  height: 32px;
}

.dashboard-card__value {
  font-size: 2.5rem;
  font-weight: var(--weight-bold);
  color: var(--color-navy-900);
  line-height: 1;
  margin-bottom: var(--spacing-1);
}

.dashboard-card__label {
  font-size: var(--text-support);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-slate-500);
  font-weight: var(--weight-semibold);
}

/* ==========================================================================
   Connection Diagram — For Service Ecosystem
   ========================================================================== */

.connection-diagram {
  position: relative;
  overflow: visible;
}

.connection-diagram__nodes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-6);
}

.connection-diagram__node {
  position: relative;
  flex: 0 0 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-4);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-slate-100);
  transition: all 0.3s ease;
}

.connection-diagram__node:hover {
  border-color: var(--color-teal-500);
  box-shadow: 0 4px 16px rgba(15, 17, 21, 0.08);
  transform: scale(1.05);
  z-index: 10;
}

.connection-diagram__node::before,
.connection-diagram__node::after {
  content: '';
  position: absolute;
  height: 1px;
  background: var(--color-slate-100);
  z-index: 1;
}

.connection-diagram__node::before {
  top: 50%;
  left: -20px;
  width: 20px;
}

.connection-diagram__node::after {
  top: 50%;
  right: -20px;
  width: 20px;
}

.connection-diagram__node:hover::before,
.connection-diagram__node:hover::after {
  background: var(--color-teal-500);
  height: 2px;
}

.connection-diagram__node .connection-diagram__node::before,
.connection-diagram__node .connection-diagram__node::after {
  background: var(--color-slate-100);
}

.connection-diagram__node:hover .connection-diagram__node::before,
.connection-diagram__node:hover .connection-diagram__node::after {
  background: var(--color-teal-500);
}

.connection-diagram__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-3);
  background: var(--color-teal-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-teal-700);
}

.connection-diagram__icon svg {
  width: 24px;
  height: 24px;
}

.connection-diagram__label {
  font-weight: var(--weight-semibold);
  color: var(--color-navy-900);
}

.connection-diagram__subtitle {
  font-size: var(--text-caption);
  color: var(--color-slate-500);
  margin-top: var(--spacing-1);
}

/* ==========================================================================
   Flow Diagram — For Operating Model & Lifecycle
   ========================================================================== */

.flow-diagram {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  max-width: 800px;
  margin: 0 auto;
}

.flow-diagram__step {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
  padding: var(--spacing-5) var(--spacing-6);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-slate-100);
  transition: all 0.3s ease;
}

.flow-diagram__step:hover {
  border-color: var(--color-teal-500);
  box-shadow: 0 4px 12px rgba(15, 17, 21, 0.06);
  transform: translateX(4px);
}

.flow-diagram__step::before {
  content: '';
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: 50%;
  background: var(--color-teal-100);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-teal-700);
}

.flow-diagram__step:hover::before {
  background: var(--color-teal-500);
  color: var(--color-white);
}

.flow-diagram__step .flow-diagram__step::before {
  background: var(--color-slate-100);
  color: var(--color-slate-500);
}

.flow-diagram__step:hover .flow-diagram__step::before {
  background: var(--color-teal-500);
  color: var(--color-white);
}

.flow-diagram__step:last-child::before {
  background: var(--color-teal-500);
  color: var(--color-white);
}

.flow-diagram__content {
  flex: 1;
}

.flow-diagram__title {
  margin: 0 0 var(--spacing-1) 0;
  font-size: var(--text-h4);
  font-weight: var(--weight-semibold);
  color: var(--color-navy-900);
}

.flow-diagram__subtitle {
  margin: 0;
  font-size: var(--text-body);
  color: var(--color-slate-700);
  line-height: 1.6;
}

.flow-diagram__description {
  margin: var(--spacing-2) 0 0 0;
  font-size: var(--text-support);
  color: var(--color-slate-500);
  font-style: italic;
}