/* === Diagram Layout === */
.diagram-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh; /* Dynamic viewport height — accounts for mobile browser chrome */
}

.diagram-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  /* Safe area padding for notched devices (iPhone X+) */
  padding-left: max(1rem, env(safe-area-inset-left));
  padding-right: max(1rem, env(safe-area-inset-right));
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.diagram-header .back-link {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--text-secondary);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  transition: color var(--transition-fast);
  white-space: nowrap;
}
.diagram-header .back-link:hover {
  color: var(--cf-orange);
  opacity: 1;
}

.diagram-header h1 {
  font-size: clamp(0.875rem, 2.5vw, 1.25rem);
  color: var(--text-primary);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.diagram-header .uc-badge {
  font-size: clamp(0.625rem, 1.2vw, 0.75rem);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--color-cloudflare-bg);
  color: var(--cf-orange);
  font-weight: 600;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

/* === Main Content Area === */
.diagram-content {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/* === Canvas (left side) === */
.diagram-canvas {
  flex: 1;
  position: relative;
  overflow: auto;
  padding: clamp(0.5rem, 1.5vw, 1.25rem) clamp(0.75rem, 2vw, 2rem);
  min-height: 0;
  /* Enable smooth momentum scrolling on iOS */
  -webkit-overflow-scrolling: touch;
}

.flow-container {
  position: relative;
  min-width: min(100%, 900px);
  min-height: 400px;
  height: 100%;
  margin: 0 auto;
}

/* === Column Layout for Nodes === */
.flow-columns {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: clamp(0.75rem, 2vw, 2rem);
  min-height: 400px;
  height: 100%;
  position: relative;
}

.flow-column {
  display: flex;
  flex-direction: column;
  gap: clamp(0.5rem, 1.2vw, 1rem);
  align-items: center;
  min-width: 0;
  z-index: 2;
  justify-content: space-between;
}

.flow-column.col-left {
  flex: 0 0 clamp(130px, 16vw, 200px);
  padding-top: 1.5rem;
  justify-content: flex-start;
  gap: clamp(0.75rem, 1.8vw, 1.375rem);
}

.flow-column.col-center {
  flex: 1;
  max-width: 500px;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.flow-column.col-right {
  flex: 0 0 clamp(130px, 16vw, 200px);
  padding-top: 1.5rem;
  justify-content: flex-start;
  gap: clamp(0.75rem, 1.8vw, 1.375rem);
}

.column-label {
  font-size: clamp(0.625rem, 1.2vw, 0.75rem);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  text-align: center;
  width: 100%;
}

/* === Nodes === */
.flow-node {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(0.375rem, 0.8vw, 0.625rem);
  padding: clamp(0.375rem, 0.9vw, 0.625rem) clamp(0.5rem, 1.1vw, 0.875rem);
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border-color);
  background: var(--bg-card);
  cursor: pointer;
  transition: all var(--transition-base);
  width: 100%;
  max-width: clamp(140px, 18vw, 210px);
  min-height: clamp(2.75rem, 5.5vw, 3.125rem); /* 44px min for touch targets */
  /* Remove iOS tap highlight for custom styling */
  -webkit-tap-highlight-color: transparent;
  /* Prevent text selection on rapid taps */
  -webkit-user-select: none;
  user-select: none;
}

.flow-node:hover {
  border-color: var(--text-muted);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Touch devices: remove hover transform to prevent sticky hover states */
@media (hover: none) {
  .flow-node:hover {
    transform: none;
  }
}

/* Active press state for touch feedback */
.flow-node:active {
  transform: scale(0.97);
}

.flow-node.active {
  border-color: var(--cf-orange);
  box-shadow: var(--shadow-glow-orange);
  z-index: 3;
}

.flow-node.dimmed {
  opacity: 0.3;
  filter: saturate(0.3);
}

.flow-node .node-icon {
  font-size: clamp(0.875rem, 1.8vw, 1.25rem);
  flex-shrink: 0;
  width: clamp(1.25rem, 2.5vw, 1.75rem);
  text-align: center;
}

.flow-node .node-label {
  font-size: clamp(0.6875rem, 1.3vw, 0.8125rem);
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.35;
  min-width: 0;
  overflow: hidden;
}

.flow-node .node-sublabel {
  font-size: clamp(0.5625rem, 1vw, 0.6875rem);
  color: var(--text-muted);
  display: block;
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Extra spacing for nodes that have a labeled edge to the next same-column node.
   The .has-labeled-edge class is added by flow-engine.js at render time. */
.flow-node.has-labeled-edge {
  margin-bottom: clamp(0.375rem, 1vw, 0.75rem);
}

/* Node type coloring */
.flow-node[data-type="user"] { border-color: var(--color-user); background: var(--color-user-bg); }
.flow-node[data-type="device"] { border-color: var(--color-device); background: var(--color-device-bg); }
.flow-node[data-type="cloudflare"] { border-color: var(--color-cloudflare); background: var(--color-cloudflare-bg); }
.flow-node[data-type="ai-service"] { border-color: var(--color-ai-service); background: var(--color-ai-service-bg); }
.flow-node[data-type="resource"] { border-color: var(--color-resource); background: var(--color-resource-bg); }
.flow-node[data-type="coming-soon"] { border-color: var(--color-coming-soon); background: var(--color-coming-soon-bg); }

.flow-node[data-type="user"].dimmed,
.flow-node[data-type="device"].dimmed,
.flow-node[data-type="cloudflare"].dimmed,
.flow-node[data-type="ai-service"].dimmed,
.flow-node[data-type="resource"].dimmed,
.flow-node[data-type="coming-soon"].dimmed {
  border-color: var(--border-color);
  background: var(--bg-card);
}

/* Coming soon badge */
.flow-node .coming-soon-badge {
  position: absolute;
  top: -7px;
  right: -3px;
  font-size: clamp(0.4375rem, 0.9vw, 0.5625rem);
  padding: 1px 5px;
  border-radius: 8px;
  background: var(--color-coming-soon);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

/* === SVG Edges === */
.flow-edges {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.flow-edge {
  fill: none;
  stroke: var(--border-color);
  stroke-width: 1.5;
  stroke-opacity: 0.7;
  transition: all var(--transition-base);
}

.flow-edge.active {
  stroke: var(--cf-orange);
  stroke-width: 2.25;
  stroke-opacity: 1;
  filter: drop-shadow(0 0 4px rgba(243, 128, 32, 0.4));
}

.flow-edge.dimmed {
  stroke: var(--border-light);
  opacity: 0.15;
}

.flow-edge-label {
  font-size: clamp(0.5625rem, 1.1vw, 0.6875rem);
  font-weight: 500;
  fill: var(--text-secondary);
  text-anchor: middle;
  transition: fill var(--transition-base);
  paint-order: stroke;
  stroke: var(--bg-primary);
  stroke-width: 4px;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.flow-edge-label.active {
  fill: var(--cf-orange);
  font-weight: 600;
}

/* Animated packet dot */
.packet-dot {
  r: 3.5;
  fill: var(--cf-orange);
  filter: drop-shadow(0 0 5px rgba(243, 128, 32, 0.5));
}

/* Arrow markers */
.edge-arrow {
  fill: var(--border-color);
}
.edge-arrow.active {
  fill: var(--cf-orange);
}

/* === Side Panel === */
.diagram-panel {
  width: clamp(16.25rem, 28vw, 22.5rem);
  flex-shrink: 0;
  border-left: 1px solid var(--border-color);
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  /* Safe area for notched devices when panel is at edge */
  padding-right: env(safe-area-inset-right);
}

.panel-controls {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: clamp(0.5rem, 1.2vw, 1rem);
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  padding: clamp(0.5rem, 0.8vw, 0.625rem) clamp(0.75rem, 1.2vw, 1rem);
  border-radius: var(--radius-sm);
  font-size: clamp(0.75rem, 1.3vw, 0.8125rem);
  font-weight: 500;
  transition: all var(--transition-fast);
  /* Ensure WCAG 2.5.8 minimum touch target (44x44px) */
  min-height: 2.75rem;
  min-width: 2.75rem;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  background: var(--cf-orange);
  color: #fff;
}
.btn-primary:hover {
  background: var(--cf-orange-dark);
}
.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.step-counter {
  font-size: clamp(0.6875rem, 1.3vw, 0.8125rem);
  color: var(--text-secondary);
  margin-left: auto;
  font-variant-numeric: tabular-nums;
}

/* === Step Info === */
.panel-step-info {
  flex: 1;
  overflow-y: auto;
  padding: clamp(0.75rem, 1.5vw, 1.25rem);
}

.step-info-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 0.625rem;
  color: var(--text-muted);
  text-align: center;
  padding: clamp(1rem, 2vw, 2rem);
}

.step-info-placeholder .placeholder-icon {
  font-size: clamp(1.5rem, 3vw, 2rem);
  opacity: 0.5;
}

.step-title {
  font-size: clamp(0.8125rem, 1.6vw, 1rem);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(1.25rem, 2vw, 1.5rem);
  height: clamp(1.25rem, 2vw, 1.5rem);
  border-radius: 50%;
  background: var(--cf-orange);
  color: #fff;
  font-size: clamp(0.625rem, 1.2vw, 0.75rem);
  font-weight: 700;
  margin-right: 0.375rem;
  flex-shrink: 0;
}

.step-product {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--color-cloudflare-bg);
  color: var(--cf-orange);
  font-size: clamp(0.625rem, 1.2vw, 0.75rem);
  font-weight: 500;
  margin: 0.375rem 0;
}

.step-description {
  font-size: clamp(0.6875rem, 1.3vw, 0.8125rem);
  color: var(--text-secondary);
  line-height: 1.65;
  margin-top: 0.625rem;
}

.step-why {
  margin-top: 0.75rem;
  padding: clamp(0.5rem, 1vw, 0.75rem);
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
}

.step-why-label {
  font-size: clamp(0.5625rem, 1.1vw, 0.6875rem);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--cf-orange);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.step-why p {
  font-size: clamp(0.6875rem, 1.3vw, 0.8125rem);
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-docs-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 0.75rem;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--cf-orange);
  font-size: clamp(0.625rem, 1.2vw, 0.75rem);
  font-weight: 500;
  transition: all var(--transition-fast);
}
.step-docs-link:hover {
  background: var(--bg-card-hover);
  border-color: var(--cf-orange);
  opacity: 1;
}

/* === Flow Direction Indicators === */
.flow-archetype-labels {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  padding: 0 0.5rem;
}

.archetype-label {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: clamp(0.5625rem, 1.1vw, 0.6875rem);
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.archetype-arrow {
  display: inline-block;
  width: clamp(24px, 4vw, 40px);
  height: 2px;
  position: relative;
}

.archetype-arrow.human-ai {
  background: var(--color-user);
}
.archetype-arrow.human-ai::after {
  content: '';
  position: absolute;
  right: 0;
  top: -3px;
  border: 4px solid transparent;
  border-left: 6px solid var(--color-user);
}

.archetype-arrow.agent-resource {
  background: var(--color-ai-service);
}
.archetype-arrow.agent-resource::after {
  content: '';
  position: absolute;
  right: 0;
  top: -3px;
  border: 4px solid transparent;
  border-left: 6px solid var(--color-ai-service);
}

/* === Legend (Bottom bar) === */
.diagram-legend {
  display: flex;
  align-items: center;
  gap: clamp(0.625rem, 1.5vw, 1.25rem);
  padding: 0.5rem clamp(0.75rem, 2vw, 1.5rem);
  /* Safe area for bottom-notch / home indicator on iPhone */
  padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
  padding-left: max(clamp(0.75rem, 2vw, 1.5rem), env(safe-area-inset-left));
  padding-right: max(clamp(0.75rem, 2vw, 1.5rem), env(safe-area-inset-right));
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: clamp(0.5625rem, 1.1vw, 0.6875rem);
  color: var(--text-muted);
}

.legend-dot {
  width: clamp(6px, 1vw, 8px);
  height: clamp(6px, 1vw, 8px);
  border-radius: 2px;
  flex-shrink: 0;
}

.legend-dot.user { background: var(--color-user); }
.legend-dot.cloudflare { background: var(--color-cloudflare); }
.legend-dot.ai-service { background: var(--color-ai-service); }
.legend-dot.resource { background: var(--color-resource); }
.legend-dot.coming-soon { background: var(--color-coming-soon); }

/* === Tooltip === */
.tooltip-overlay {
  position: fixed;
  z-index: 100;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  /* Prevent tooltip from extending into safe areas */
  max-width: calc(100vw - env(safe-area-inset-left) - env(safe-area-inset-right));
}

.tooltip-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.tooltip-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.875rem;
  box-shadow: var(--shadow-lg);
  max-width: min(17.5rem, 80vw);
  min-width: 11.25rem;
}

.tooltip-card h4 {
  font-size: clamp(0.75rem, 1.4vw, 0.875rem);
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.tooltip-card p {
  font-size: clamp(0.625rem, 1.2vw, 0.75rem);
  color: var(--text-secondary);
  line-height: 1.55;
}

.tooltip-card .tooltip-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 0.375rem;
  font-size: clamp(0.5625rem, 1.1vw, 0.6875rem);
  color: var(--cf-orange);
  pointer-events: auto;
}

/* ===================================================================
   RESPONSIVE BREAKPOINTS
   =================================================================== */

/* MacBook Pro / laptop screens (<=1440px) — optimize for Retina laptop viewing */
@media (max-width: 90rem) {
  .flow-column {
    gap: clamp(0.5rem, 1.2vw, 0.875rem);
  }

  .flow-node {
    max-width: clamp(8.75rem, 17vw, 12.1875rem);
    min-height: clamp(2.375rem, 5vw, 3rem);
    padding: clamp(0.3rem, 0.8vw, 0.5rem) clamp(0.5rem, 1vw, 0.75rem);
  }

  .diagram-panel {
    width: clamp(16.25rem, 26vw, 21.25rem);
  }
}

/* Large tablets / small desktops (<=1200px) */
@media (max-width: 75rem) {
  .diagram-panel {
    width: clamp(15rem, 30vw, 18.75rem);
  }

  .flow-column.col-left,
  .flow-column.col-right {
    flex: 0 0 clamp(7.5rem, 16vw, 11.25rem);
  }
}

/* Tablets (<=1024px): Stack layout vertically */
@media (max-width: 64rem) {
  .diagram-content {
    flex-direction: column;
  }

  .diagram-panel {
    width: 100%;
    max-height: 40vh;
    max-height: 40dvh;
    min-height: 12.5rem;
    border-left: none;
    border-top: 1px solid var(--border-color);
    padding-right: 0; /* Reset safe-area since panel is full-width */
  }

  .diagram-canvas {
    min-height: 50vh;
    min-height: 50dvh;
    flex: 1;
  }

  .flow-container {
    min-width: 100%;
    height: auto;
  }

  .flow-columns {
    height: auto;
  }

  .flow-column.col-center {
    justify-content: flex-start;
    gap: clamp(0.5rem, 1.2vw, 1rem);
  }

  .flow-column.col-left,
  .flow-column.col-right {
    flex: 0 0 clamp(6.875rem, 18vw, 10rem);
  }
}

/* Small tablets / large phones (<=768px) */
@media (max-width: 48rem) {
  .diagram-header {
    padding: 0.5rem 0.75rem;
    padding-left: max(0.75rem, env(safe-area-inset-left));
    padding-right: max(0.75rem, env(safe-area-inset-right));
    gap: 0.5rem;
  }

  .flow-columns {
    gap: clamp(0.5rem, 2vw, 1rem);
  }

  .flow-column.col-left,
  .flow-column.col-right {
    flex: 0 0 clamp(5.625rem, 16vw, 8.125rem);
  }

  .flow-node {
    max-width: clamp(5.625rem, 16vw, 10rem);
    padding: 0.375rem 0.5rem;
    gap: 0.25rem;
  }

  .flow-node.has-labeled-edge {
    margin-bottom: clamp(0.5rem, 1.2vw, 0.75rem);
  }

  .flow-node .node-icon {
    font-size: 0.875rem;
    width: 1.125rem;
  }

  .flow-node .node-label {
    font-size: 0.625rem;
  }

  .flow-node .node-sublabel {
    font-size: 0.5rem;
  }

  .flow-archetype-labels {
    gap: 0.5rem;
    margin-bottom: 0.5rem;
  }

  .panel-controls {
    padding: 0.5rem;
    gap: 0.375rem;
  }

  /* Maintain touch target size even at smaller viewports */
  .btn {
    padding: 0.375rem 0.625rem;
    font-size: 0.75rem;
    min-height: 2.75rem;
    min-width: 2.75rem;
  }

  .diagram-legend {
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    padding-bottom: max(0.375rem, env(safe-area-inset-bottom));
  }

  /* Tooltip: show as bottom sheet on small viewports */
  .tooltip-overlay {
    left: 0 !important;
    right: 0;
    bottom: 0;
    top: auto !important;
    width: 100%;
    padding: 0.5rem;
    padding-bottom: env(safe-area-inset-bottom);
  }

  .tooltip-card {
    max-width: 100%;
    width: 100%;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }
}

/* Phones (<=480px) — iPhone 17 viewport ~430px CSS width in Chrome
   Uses horizontal scroll for the complex diagram layout */
@media (max-width: 30rem) {
  .diagram-header h1 {
    font-size: 0.875rem;
  }

  .diagram-header .back-link {
    font-size: 0.75rem;
  }

  .diagram-canvas {
    padding: 0.5rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    /* Hint that content is scrollable */
    scroll-snap-type: x proximity;
  }

  .flow-container {
    min-width: 37.5rem; /* 600px — diagram needs width for 3-column layout */
    min-height: 21.875rem;
  }

  .flow-columns {
    min-height: 21.875rem;
  }

  .flow-node.has-labeled-edge {
    margin-bottom: clamp(0.375rem, 1vw, 0.625rem);
  }

  .diagram-panel {
    max-height: 45vh;
    max-height: 45dvh;
  }

  .panel-step-info {
    padding: 0.75rem;
    /* Ensure readable text on small screens */
    font-size: 0.875rem;
  }

  .step-title {
    font-size: 0.9375rem;
  }

  .step-description {
    font-size: 0.8125rem;
    line-height: 1.6;
  }

  .step-why {
    padding: 0.625rem;
  }

  .step-why p {
    font-size: 0.8125rem;
    line-height: 1.6;
  }

  .step-docs-link {
    /* Larger touch target for doc links */
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
  }

  .flow-node .coming-soon-badge {
    font-size: 0.4375rem;
    padding: 1px 4px;
    top: -5px;
    right: -2px;
  }

  /* Step info: ensure text is comfortably readable */
  .step-product {
    font-size: 0.75rem;
    padding: 0.25rem 0.625rem;
  }

  .step-number {
    width: 1.5rem;
    height: 1.5rem;
    font-size: 0.75rem;
  }
}

/* Very small screens (<=360px) — older/compact devices */
@media (max-width: 22.5rem) {
  .flow-container {
    min-width: 31.25rem;
  }

  .diagram-header {
    padding: 0.375rem 0.5rem;
  }

  .panel-controls {
    padding: 0.375rem;
  }

  .btn {
    padding: 0.375rem 0.5rem;
    font-size: 0.6875rem;
    /* Still maintain minimum touch target */
    min-height: 2.75rem;
    min-width: 2.75rem;
  }

  .step-counter {
    font-size: 0.6875rem;
  }
}

/* Landscape phones: give more vertical space to diagram */
@media (max-height: 31.25rem) and (orientation: landscape) {
  .diagram-content {
    flex-direction: row;
  }

  .diagram-panel {
    width: clamp(13.75rem, 30vw, 17.5rem);
    max-height: none;
    border-left: 1px solid var(--border-color);
    border-top: none;
  }

  .diagram-header {
    padding: 0.375rem 0.75rem;
  }

  .diagram-header h1 {
    font-size: 0.875rem;
  }

  .flow-archetype-labels {
    margin-bottom: 0.375rem;
  }
}

/* ===================================================================
   TOUCH DEVICE OPTIMIZATIONS
   =================================================================== */

/* Coarse pointer = touch device (phones, tablets) */
@media (pointer: coarse) {
  /* Increase node touch area via padding */
  .flow-node {
    padding: clamp(0.5rem, 1vw, 0.75rem) clamp(0.625rem, 1.2vw, 1rem);
  }

  /* Prevent accidental double-tap zoom on interactive elements */
  .flow-node,
  .btn,
  .step-docs-link,
  .tooltip-link,
  .back-link {
    touch-action: manipulation;
  }

  /* Larger scroll thumb for touch */
  ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
}

/* ===================================================================
   PRINT STYLES — clean output without interactive chrome
   =================================================================== */
@media print {
  .diagram-panel,
  .panel-controls,
  .diagram-legend,
  .flow-archetype-labels,
  .tooltip-overlay {
    display: none !important;
  }

  .diagram-canvas {
    overflow: visible;
  }

  .flow-container {
    min-width: 100%;
  }
}