/**
 * LabScope Motion System — Phase D (perceptible premium)
 *
 * Animations must be clearly visible on desktop and mobile without DevTools.
 */

:root {
  --pp-motion-instant: 140ms;
  --pp-motion-fast: 240ms;
  --pp-motion-base: 360ms;
  --pp-motion-slow: 560ms;
  --pp-motion-reveal: 920ms;
  --pp-motion-emphasis: 1100ms;
  --pp-motion-hero: 1200ms;
  --pp-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --pp-ease-spring: cubic-bezier(0.34, 1.45, 0.64, 1);
  --pp-ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --pp-motion-stagger: 120ms;
  --pp-motion-travel: 64px;
}

/* --- Pending: hide reveals before JS arms (early boot script) --- */
html.pp-motion-pending:not(.pp-reduced-motion) .pp-reveal:not(.pp-revealed),
html.pp-motion-pending:not(.pp-reduced-motion) .pp-editorial-panel:not(.pp-revealed),
html.pp-motion-pending:not(.pp-reduced-motion) .pp-editorial-band:not(.pp-revealed) {
  opacity: 0;
  visibility: hidden;
  transform: translateY(40px);
  filter: blur(8px);
}

html.pp-motion-pending:not(.pp-reduced-motion) .pp-reveal--left:not(.pp-revealed) {
  transform: translateX(-32px);
}

html.pp-motion-pending:not(.pp-reduced-motion) .pp-reveal--rise:not(.pp-revealed) {
  transform: translateY(56px);
}

html.pp-motion-pending:not(.pp-reduced-motion) .pp-reveal--scale:not(.pp-revealed) {
  transform: scale(0.94);
  filter: none;
}

html.pp-motion-pending:not(.pp-reduced-motion) .pp-reveal--fade:not(.pp-revealed) {
  transform: none;
  filter: none;
}

/* --- Page boot fade (every visit) --- */
html.pp-motion-boot body {
  opacity: 0;
}

html.pp-motion-ready body {
  opacity: 1;
  transition: opacity 520ms var(--pp-ease-out);
}

/* --- Page enter --- */
html.pp-motion-live:not(.pp-reduced-motion) #primary,
html.pp-motion-live:not(.pp-reduced-motion) .pp-motion-main {
  animation: pp-page-enter 880ms var(--pp-ease-out) both;
}

@keyframes pp-page-enter {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* --- View transitions --- */
@supports (view-transition-name: none) {
  .pp-view-header { view-transition-name: pp-header; }
  .pp-view-footer { view-transition-name: pp-footer; }
  .pp-motion-main { view-transition-name: pp-main; }
}

::view-transition-old(pp-main),
::view-transition-new(pp-main) {
  animation-duration: 420ms;
  animation-timing-function: var(--pp-ease-in-out);
}

::view-transition-old(pp-header),
::view-transition-new(pp-header),
::view-transition-old(pp-footer),
::view-transition-new(pp-footer) {
  animation-duration: 280ms;
}

/* --- Header scroll --- */
.pp-header-sentinel {
  position: relative;
  width: 100%;
  height: 1px;
  margin: 0;
  pointer-events: none;
  visibility: hidden;
}

.pp-header {
  transition:
    background-color var(--pp-motion-base) var(--pp-ease-in-out),
    box-shadow var(--pp-motion-base) var(--pp-ease-in-out),
    border-color var(--pp-motion-base) var(--pp-ease-in-out),
    backdrop-filter var(--pp-motion-base) var(--pp-ease-in-out),
    transform var(--pp-motion-base) var(--pp-ease-out);
}

.pp-header.is-scrolled {
  box-shadow: 0 14px 40px color-mix(in srgb, var(--pp-primary) 12%, transparent);
  backdrop-filter: blur(16px) saturate(1.2);
}

.pp-header--premium.is-scrolled {
  box-shadow: 0 16px 48px color-mix(in srgb, var(--pp-primary) 14%, transparent);
}

.pp-header.is-scrolled .pp-logo__svg {
  transform: scale(0.92);
  transform-origin: left center;
  transition: transform var(--pp-motion-base) var(--pp-ease-spring);
}

/* --- Reveal keyframes --- */
@keyframes pp-reveal-in {
  from {
    opacity: 0;
    visibility: hidden;
    transform: translateY(var(--pp-motion-travel));
    filter: blur(10px);
  }
  to {
    opacity: 1;
    visibility: visible;
    transform: none;
    filter: none;
  }
}

@keyframes pp-reveal-left {
  from { opacity: 0; visibility: hidden; transform: translateX(-48px); filter: blur(6px); }
  to { opacity: 1; visibility: visible; transform: none; filter: none; }
}

@keyframes pp-reveal-rise {
  from { opacity: 0; visibility: hidden; transform: translateY(80px); filter: blur(8px); }
  to { opacity: 1; visibility: visible; transform: none; filter: none; }
}

@keyframes pp-reveal-scale {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: none; }
}

@keyframes pp-reveal-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.pp-reveal {
  opacity: 1;
  transform: none;
  filter: none;
}

html.pp-motion-live:not(.pp-reduced-motion) .pp-reveal.pp-revealed {
  visibility: visible;
  animation: pp-reveal-in var(--pp-motion-reveal) var(--pp-ease-out) both;
}

html.pp-motion-live:not(.pp-reduced-motion) .pp-reveal--left.pp-revealed {
  animation-name: pp-reveal-left;
}

html.pp-motion-live:not(.pp-reduced-motion) .pp-reveal--rise.pp-revealed {
  animation-name: pp-reveal-rise;
  animation-duration: var(--pp-motion-emphasis);
}

html.pp-motion-live:not(.pp-reduced-motion) .pp-reveal--scale.pp-revealed {
  animation-name: pp-reveal-scale;
  filter: none;
}

html.pp-motion-live:not(.pp-reduced-motion) .pp-reveal--fade.pp-revealed {
  animation-name: pp-reveal-fade;
  filter: none;
}

/* Grid stagger (first 8) */
html.pp-motion-live:not(.pp-reduced-motion) .pp-grid > .pp-reveal.pp-revealed:nth-child(1) { animation-delay: 0ms; }
html.pp-motion-live:not(.pp-reduced-motion) .pp-grid > .pp-reveal.pp-revealed:nth-child(2) { animation-delay: calc(var(--pp-motion-stagger) * 1); }
html.pp-motion-live:not(.pp-reduced-motion) .pp-grid > .pp-reveal.pp-revealed:nth-child(3) { animation-delay: calc(var(--pp-motion-stagger) * 2); }
html.pp-motion-live:not(.pp-reduced-motion) .pp-grid > .pp-reveal.pp-revealed:nth-child(4) { animation-delay: calc(var(--pp-motion-stagger) * 3); }
html.pp-motion-live:not(.pp-reduced-motion) .pp-grid > .pp-reveal.pp-revealed:nth-child(5) { animation-delay: calc(var(--pp-motion-stagger) * 4); }
html.pp-motion-live:not(.pp-reduced-motion) .pp-grid > .pp-reveal.pp-revealed:nth-child(6) { animation-delay: calc(var(--pp-motion-stagger) * 5); }
html.pp-motion-live:not(.pp-reduced-motion) .pp-grid > .pp-reveal.pp-revealed:nth-child(7) { animation-delay: calc(var(--pp-motion-stagger) * 6); }
html.pp-motion-live:not(.pp-reduced-motion) .pp-grid > .pp-reveal.pp-revealed:nth-child(8) { animation-delay: calc(var(--pp-motion-stagger) * 7); }

/* --- Hero orchestration --- */
html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-motion-hero__media,
html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-motion-hero__content,
html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-research-hero__media,
html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-research-hero__title,
html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-research-hero__lead,
html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-research-hero__badges,
html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-research-meta {
  opacity: 0;
  visibility: hidden;
  transform: translateY(48px);
}

html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-archive-featured-hero .pp-hero__media,
html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-archive-featured-hero .pp-hero__content {
  opacity: 1;
  visibility: visible;
  transform: none;
}

html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-motion-hero__media,
html.pp-motion-live.pp-motion-hero:not(.pp-reduced-motion):not(.is-hero-revealed) .pp-research-hero__media {
  transform: translateX(-56px) scale(0.94);
}

html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-motion-hero__media,
html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-research-hero__media {
  visibility: visible;
  animation: pp-hero-media-in var(--pp-motion-hero) var(--pp-ease-out) both;
}

html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-motion-hero__content {
  visibility: visible;
  animation: pp-hero-content-in var(--pp-motion-hero) var(--pp-ease-out) 160ms both;
}

@keyframes pp-hero-media-in {
  from { opacity: 0; visibility: hidden; transform: translateX(-56px) scale(0.94); filter: blur(10px); }
  to { opacity: 1; visibility: visible; transform: none; filter: none; }
}

@keyframes pp-hero-content-in {
  from { opacity: 0; visibility: hidden; transform: translateY(56px); filter: blur(8px); }
  to { opacity: 1; visibility: visible; transform: none; filter: none; }
}

html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-research-hero__title {
  visibility: visible;
  animation: pp-hero-content-in var(--pp-motion-emphasis) var(--pp-ease-out) 120ms both;
}

html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-research-hero__lead {
  visibility: visible;
  animation: pp-hero-content-in var(--pp-motion-emphasis) var(--pp-ease-out) 260ms both;
}

html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-research-meta {
  visibility: visible;
  animation: pp-reveal-in var(--pp-motion-reveal) var(--pp-ease-out) 380ms both;
}

html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-research-hero__badges {
  visibility: visible;
  animation: pp-reveal-fade var(--pp-motion-slow) var(--pp-ease-out) 180ms both;
}

@media (min-width: 768px) {
  html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-hero__media img,
  html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-hero__media .pp-hero__fallback-image {
    transition: transform 6s var(--pp-ease-out);
  }

  html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-hero__card:hover .pp-hero__media img,
  html.pp-motion-live.pp-motion-hero.is-hero-revealed:not(.pp-reduced-motion) .pp-hero__card:hover .pp-hero__media .pp-hero__fallback-image {
    transform: scale(1.06);
  }
}

/* Section title line draw */
html.pp-motion-live:not(.pp-reduced-motion) .pp-section.pp-revealed .pp-section__title::after {
  animation: pp-motion-line-grow var(--pp-motion-reveal) var(--pp-ease-out) forwards;
}

html.pp-motion-live:not(.pp-reduced-motion) .pp-section:not(.pp-revealed) .pp-section__title::after {
  transform: scaleX(0);
  opacity: 0;
}

@keyframes pp-motion-line-grow {
  from { transform: scaleX(0); opacity: 0; }
  to { transform: scaleX(1); opacity: 1; }
}

/* Editorial panels & bands */
html.pp-motion-live:not(.pp-reduced-motion) .pp-editorial-panel.pp-revealed,
html.pp-motion-live:not(.pp-reduced-motion) .pp-editorial-band.pp-revealed {
  animation: pp-reveal-in var(--pp-motion-reveal) var(--pp-ease-out) both;
}

/* --- Cards (always on .pp-motion) --- */
.pp-motion .pp-card {
  transition:
    transform var(--pp-motion-base) var(--pp-ease-spring),
    box-shadow var(--pp-motion-base) var(--pp-ease-out),
    border-color var(--pp-motion-base) var(--pp-ease-out);
  will-change: transform;
}

.pp-motion .pp-card:hover {
  transform: translateY(-12px) scale(1.015);
  box-shadow: 0 20px 48px color-mix(in srgb, var(--pp-primary) 18%, transparent);
}

.pp-motion .pp-card:active,
.pp-motion .pp-card.is-touch {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 18px 44px color-mix(in srgb, var(--pp-primary) 20%, transparent);
  transition-duration: var(--pp-motion-fast);
}

@media (hover: none) and (pointer: coarse) {
  .pp-motion .pp-btn.is-touch {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 10px 28px color-mix(in srgb, var(--pp-primary) 20%, transparent);
  }

  .pp-motion .pp-download-item.is-touch {
    transform: translateY(-4px) scale(1.015);
  }
}

.pp-motion .pp-card__read-more,
.pp-motion .pp-section__link {
  transition: gap var(--pp-motion-fast) var(--pp-ease-out), color var(--pp-motion-fast) var(--pp-ease-out), transform var(--pp-motion-fast) var(--pp-ease-out);
}

.pp-motion .pp-card:hover .pp-card__read-more {
  transform: translateX(4px);
}

/* --- Buttons --- */
.pp-motion .pp-btn {
  transition:
    transform var(--pp-motion-fast) var(--pp-ease-spring),
    box-shadow var(--pp-motion-base) var(--pp-ease-out),
    background-color var(--pp-motion-fast) var(--pp-ease-out),
    border-color var(--pp-motion-fast) var(--pp-ease-out);
}

.pp-motion .pp-btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 32px color-mix(in srgb, var(--pp-primary) 22%, transparent);
}

.pp-motion .pp-btn:active {
  transform: translateY(1px) scale(0.96);
  transition-duration: var(--pp-motion-instant);
}

/* --- Search modal motion (desktop panel only; mobile uses search-modal.css slide) --- */
@media (min-width: 769px) {
  .pp-search-modal.is-opening .pp-search-modal__panel,
  .pp-search-modal:not([hidden]) .pp-search-modal__panel {
    animation: pp-search-panel-in var(--pp-motion-slow) var(--pp-ease-spring);
  }
}

@keyframes pp-search-panel-in {
  from { opacity: 0; transform: scale(0.92) translateY(24px); filter: blur(4px); }
  to { opacity: 1; transform: none; filter: none; }
}

@keyframes pp-motion-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- Mobile nav --- */
.pp-nav.is-opening .pp-nav__list > li {
  opacity: 0;
  transform: translateY(16px);
  animation: pp-motion-nav-in var(--pp-motion-base) var(--pp-ease-out) forwards;
}

.pp-nav.is-opening .pp-nav__list > li:nth-child(1) { animation-delay: 0ms; }
.pp-nav.is-opening .pp-nav__list > li:nth-child(2) { animation-delay: 50ms; }
.pp-nav.is-opening .pp-nav__list > li:nth-child(3) { animation-delay: 100ms; }
.pp-nav.is-opening .pp-nav__list > li:nth-child(4) { animation-delay: 150ms; }
.pp-nav.is-opening .pp-nav__list > li:nth-child(5) { animation-delay: 200ms; }
.pp-nav.is-opening .pp-nav__list > li:nth-child(6) { animation-delay: 250ms; }

@keyframes pp-motion-nav-in {
  to { opacity: 1; transform: none; }
}

/* --- Consent --- */
.pp-consent:not([hidden]) {
  animation: pp-motion-consent-in var(--pp-motion-slow) var(--pp-ease-out);
}

.pp-consent.is-dismissed {
  animation: pp-motion-consent-out var(--pp-motion-base) var(--pp-ease-out) forwards;
}

@keyframes pp-motion-consent-in {
  from { opacity: 0; transform: translateY(100%); }
  to { opacity: 1; transform: none; }
}

@keyframes pp-motion-consent-out {
  to { opacity: 0; transform: translateY(100%); }
}

body.pp-motion-consent-open {
  padding-bottom: var(--pp-consent-height, 0px);
  transition: padding-bottom var(--pp-motion-base) var(--pp-ease-out);
}

/* --- Skeleton --- */
.pp-motion-skeleton {
  position: relative;
  overflow: hidden;
  background: color-mix(in srgb, var(--pp-border) 40%, var(--pp-surface));
  border-radius: calc(var(--pp-radius) + 2px);
  min-height: 220px;
}

.pp-motion-skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--pp-surface) 70%, transparent), transparent);
  animation: pp-motion-shimmer 1.1s var(--pp-ease-in-out) infinite;
}

@keyframes pp-motion-shimmer {
  100% { transform: translateX(100%); }
}

/* --- Theme toggle --- */
.pp-theme-icon {
  transition: transform var(--pp-motion-fast) var(--pp-ease-spring), opacity var(--pp-motion-instant) var(--pp-ease-out);
}

.pp-dark-toggle:hover .pp-theme-icon {
  transform: rotate(-12deg) scale(1.08);
}

.pp-dark-toggle:active .pp-theme-icon {
  transform: scale(0.85) rotate(20deg);
}

html.pp-theme-switching,
html.pp-theme-switching * {
  transition:
    background-color 400ms var(--pp-ease-in-out),
    color 320ms var(--pp-ease-in-out),
    border-color 320ms var(--pp-ease-in-out),
    box-shadow 320ms var(--pp-ease-in-out) !important;
}

html.pp-theme-switching::view-transition-old(root),
html.pp-theme-switching::view-transition-new(root) {
  animation-duration: 400ms;
}

/* --- TOC & jump nav --- */
.pp-motion .pp-toc--premium .pp-toc__list a {
  transition: color var(--pp-motion-fast) var(--pp-ease-out), background var(--pp-motion-fast) var(--pp-ease-out), transform var(--pp-motion-base) var(--pp-ease-spring), border-color var(--pp-motion-fast) var(--pp-ease-out);
}

.pp-motion .pp-toc--premium .pp-toc__list a.is-active {
  transform: translateX(6px);
}

.pp-motion .pp-editorial-jump a {
  transition: color var(--pp-motion-fast) var(--pp-ease-out), background var(--pp-motion-fast) var(--pp-ease-out), transform var(--pp-motion-base) var(--pp-ease-spring), box-shadow var(--pp-motion-fast) var(--pp-ease-out);
}

.pp-motion .pp-editorial-jump a.is-active {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px color-mix(in srgb, var(--pp-primary) 12%, transparent);
}

/* --- Downloads --- */
.pp-motion .pp-download-item {
  transition: transform var(--pp-motion-base) var(--pp-ease-spring), box-shadow var(--pp-motion-base) var(--pp-ease-out), border-color var(--pp-motion-base) var(--pp-ease-out);
}

.pp-motion .pp-download-item:hover {
  transform: translateY(-4px) scale(1.01);
}

.pp-motion .pp-download-item.is-loading {
  opacity: 0.65;
  pointer-events: none;
}

.pp-motion .pp-download-item.is-pulse {
  animation: pp-download-pulse 600ms var(--pp-ease-out);
}

@keyframes pp-download-pulse {
  0% { transform: scale(1); }
  40% { transform: scale(1.03); box-shadow: 0 8px 24px color-mix(in srgb, var(--pp-primary) 20%, transparent); }
  100% { transform: scale(1); }
}

/* --- Image reveal --- */
.pp-image-reveal {
  overflow: hidden;
}

html.pp-motion-live .pp-image-reveal img {
  animation: pp-image-reveal-in var(--pp-motion-emphasis) var(--pp-ease-out) 200ms both;
}

@keyframes pp-image-reveal-in {
  from { transform: scale(1.08); opacity: 0.6; filter: blur(4px); }
  to { transform: scale(1); opacity: 1; filter: none; }
}

/* --- Reading progress --- */
.pp-reading-progress--premium::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 16px;
  height: 100%;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--pp-accent) 90%, #fff));
  filter: blur(5px);
  animation: pp-motion-progress-glow 1.8s var(--pp-ease-in-out) infinite;
}

@keyframes pp-motion-progress-glow {
  0%, 100% { opacity: 0.5; transform: scaleX(0.8); }
  50% { opacity: 1; transform: scaleX(1.2); }
}

/* --- Counter --- */
.pp-motion [data-pp-count].is-counted {
  animation: pp-motion-count-pop var(--pp-motion-base) var(--pp-ease-spring);
}

@keyframes pp-motion-count-pop {
  0% { transform: scale(0.85); opacity: 0.5; }
  60% { transform: scale(1.06); }
  100% { transform: scale(1); opacity: 1; }
}

/* --- Link press --- */
.pp-motion-link {
  transition: opacity var(--pp-motion-instant) var(--pp-ease-out), transform var(--pp-motion-fast) var(--pp-ease-out);
}

.pp-motion-link:active {
  opacity: 0.75;
  transform: scale(0.98);
}

/* --- Search input --- */
.pp-motion .pp-search-form__input {
  transition: box-shadow var(--pp-motion-base) var(--pp-ease-out), transform var(--pp-motion-fast) var(--pp-ease-out), border-color var(--pp-motion-fast) var(--pp-ease-out);
}

.pp-motion .pp-search-form__input:focus {
  transform: translateY(-2px) scale(1.005);
  box-shadow: 0 12px 32px color-mix(in srgb, var(--pp-primary) 16%, transparent);
}

/* --- Sticky share --- */
.pp-motion .pp-sticky-share a,
.pp-motion .pp-sticky-share button {
  transition: transform var(--pp-motion-fast) var(--pp-ease-spring), background var(--pp-motion-fast) var(--pp-ease-out);
}

.pp-motion .pp-sticky-share a:hover,
.pp-motion .pp-sticky-share button:hover {
  transform: translateY(-3px) scale(1.08);
}

/* --- Reduced motion --- */
html.pp-reduced-motion *,
html.pp-reduced-motion *::before,
html.pp-reduced-motion *::after {
  animation: none !important;
  transition: none !important;
  scroll-behavior: auto !important;
}

html.pp-reduced-motion .pp-reveal,
html.pp-reduced-motion .pp-editorial-panel,
html.pp-reduced-motion .pp-editorial-band {
  opacity: 1 !important;
  transform: none !important;
  filter: none !important;
}

@media (prefers-reduced-motion: reduce) {
  html.pp-motion-boot body { opacity: 1; }
  html.pp-motion-pending .pp-reveal { opacity: 1; transform: none; filter: none; }
}