/**
 * Diagnostic motion — subtle, paced. Load after editorial.css.
 * Respect prefers-reduced-motion.
 */

@keyframes diag-step-exit {
  to {
    opacity: 0;
    transform: translateY(6px);
  }
}

@keyframes diag-reveal {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

html.phase-page-min #flow .step--exiting {
  animation: diag-step-exit 0.22s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  pointer-events: none;
}

html.phase-page-min #flow .step.active.step--entering .step-header > .step-adaptive,
html.phase-page-min #flow .step.active.step--entering .step-header > .step-micro,
html.phase-page-min #flow .step.active.step--entering .step-header > .step-instruction,
html.phase-page-min #flow .step.active.step--entering .step-header > .step-directive,
html.phase-page-min #flow .step.active.step--entering .step-header > .step-context-hint,
html.phase-page-min #flow .step.active.step--entering .option-list .option-item,
html.phase-page-min #flow .step.active.step--entering .step-context-field,
html.phase-page-min #flow .step.active.step--entering .step-checkpoint {
  animation: diag-reveal 0.42s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  opacity: 0;
}

/* Stagger: label → question → inputs → options */
html.phase-page-min #flow .step.active.step--entering .step-header > .step-adaptive {
  animation-delay: 0ms;
}
html.phase-page-min #flow .step.active.step--entering .step-header:has(.step-adaptive) > .step-micro {
  animation-delay: 140ms;
}
html.phase-page-min #flow .step.active.step--entering .step-header:has(.step-adaptive) > .step-instruction {
  animation-delay: 95ms;
}
html.phase-page-min #flow .step.active.step--entering .step-header:has(.step-adaptive) ~ .option-list .option-item:nth-child(1) {
  animation-delay: 220ms;
}
html.phase-page-min #flow .step.active.step--entering .step-header:has(.step-adaptive) ~ .option-list .option-item:nth-child(2) {
  animation-delay: 280ms;
}
html.phase-page-min #flow .step.active.step--entering .step-header > .step-micro {
  animation-delay: 0ms;
}
html.phase-page-min #flow .step.active.step--entering .step-header > .step-instruction {
  animation-delay: 95ms;
}
html.phase-page-min #flow .step.active.step--entering .step-header > .step-directive {
  animation-delay: 95ms;
}
html.phase-page-min #flow .step.active.step--entering .step-header > .step-context-hint {
  animation-delay: 95ms;
}
html.phase-page-min #flow .step.active.step--entering .step-header > .step-context-field {
  animation-delay: 140ms;
}
html.phase-page-min #flow .step.active.step--entering .step-checkpoint {
  animation-delay: 95ms;
}
html.phase-page-min #flow .step.active.step--entering .option-list .option-item:nth-child(1) {
  animation-delay: 180ms;
}
html.phase-page-min #flow .step.active.step--entering .option-list .option-item:nth-child(2) {
  animation-delay: 240ms;
}

/* Selection feedback */
html.phase-page-min #flow .option-item {
  transition:
    transform 0.18s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.18s ease,
    border-color 0.18s ease,
    background 0.18s ease;
}

html.phase-page-min #flow .option-item:active {
  transform: scale(0.995);
}

html.phase-page-min #flow .option-item.selected {
  transform: scale(1.02);
}

@media (hover: hover) {
  html.phase-page-min #flow .option-item:not(.dim):hover {
    transform: scale(1.01);
  }
}

/* Progress: smooth width */
html.phase-page-min .progress-fill {
  transition: width 0.65s cubic-bezier(0.22, 1, 0.36, 1) !important;
}

/* Summary: soft vignette + stagger */
html.phase-page-min.diag-summary-open #summary {
  position: relative;
  z-index: 1;
}

html.phase-page-min.diag-summary-open #summary::before {
  content: '';
  position: absolute;
  left: 50%;
  top: -12vh;
  transform: translateX(-50%);
  width: min(120vw, 900px);
  height: 45vh;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 0, 0, 0.22) 0%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}

html.phase-page-min.diag-summary-open #summary > * {
  position: relative;
  z-index: 1;
}

html.phase-page-min #summary.summary--motion-stagger {
  animation: diag-reveal 0.45s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

html.phase-page-min #summary.summary--motion-stagger > * {
  opacity: 0;
  animation: diag-reveal 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

html.phase-page-min #summary.summary--motion-stagger > *:nth-child(1) {
  animation-delay: 0ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(2) {
  animation-delay: 90ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(3) {
  animation-delay: 180ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(4) {
  animation-delay: 260ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(5) {
  animation-delay: 340ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(6) {
  animation-delay: 420ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(7) {
  animation-delay: 500ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(8) {
  animation-delay: 580ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(9) {
  animation-delay: 660ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(10) {
  animation-delay: 740ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(11) {
  animation-delay: 820ms;
}
html.phase-page-min #summary.summary--motion-stagger > *:nth-child(12) {
  animation-delay: 900ms;
}

/* Context step: Continue appears only when input is valid */
html.phase-page-min #capture-context-continue {
  transition: opacity 0.42s cubic-bezier(0.22, 1, 0.36, 1);
}
html.phase-page-min #capture-context-continue[disabled] {
  opacity: 0;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  html.phase-page-min #capture-context-continue {
    transition: none;
  }
  html.phase-page-min #capture-context-continue[disabled] {
    opacity: 0.38;
  }

  html.phase-page-min #flow .step--exiting,
  html.phase-page-min #flow .step.active.step--entering .step-header > *,
  html.phase-page-min #flow .step.active.step--entering .option-list .option-item,
  html.phase-page-min #summary.summary--motion-stagger,
  html.phase-page-min #summary.summary--motion-stagger > * {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  html.phase-page-min #flow .option-item.selected {
    transform: none;
  }
}