/* Quart Motion Language. Interaction references and license audit: docs/INTERACTIVE.md. */
:root {
  --duration-fast: 180ms;
  --duration-normal: 380ms;
  --duration-slow: 800ms;
  --easing-standard: cubic-bezier(.2, .65, .3, 1);
  --easing-emphasized: cubic-bezier(.16, 1, .3, 1);
}

[hidden] { display: none !important; }

.project-reel {
  margin-block: 24px 32px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.project-reel__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-block: 18px;
}
.project-reel__status {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font: 10px/1.6 var(--mono);
}
.project-reel__status::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--olive);
}
.project-reel__controls { display: flex; align-items: center; gap: 8px; }
.project-reel__controls button {
  display: grid;
  place-items: center;
  min-width: 44px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font: 11px/1 var(--mono);
  transition: background var(--duration-fast) var(--easing-standard), color var(--duration-fast) var(--easing-standard);
}
.project-reel__controls button:hover,
.project-reel__controls button[aria-pressed="true"] { background: var(--sage); }
.project-reel__controls button:disabled { opacity: .4; cursor: default; }
.project-reel__stage {
  position: relative;
  width: 100%;
  height: clamp(350px, 35vw, 520px);
  overflow: clip;
  isolation: isolate;
  perspective: 1800px;
  perspective-origin: 50% 50%;
  touch-action: pan-y pinch-zoom;
  user-select: none;
}
.project-reel__stage::after {
  content: "";
  position: absolute;
  z-index: 12;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, var(--paper), transparent 4%, transparent 96%, var(--paper));
}
.project-reel__card {
  position: absolute;
  left: 50%;
  top: 50%;
  display: block;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  text-align: left;
  transform-style: preserve-3d;
  backface-visibility: hidden;
}
.project-reel__surface {
  display: block;
  border: 1px solid var(--line);
  background: var(--ivory);
  transition: transform var(--duration-normal) var(--easing-emphasized), border-color var(--duration-normal);
}
.project-reel__image {
  position: relative;
  display: block;
  aspect-ratio: 1.48;
  overflow: hidden;
}
.project-reel__image > * { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top; }
.project-reel__image .project-art { min-height: 0; }
.project-reel__image .project-art__word { font-size: clamp(150px, 19vw, 280px); }
.project-reel__image .project-art--levelup b { font-size: clamp(30px, 4.4vw, 64px); }
.project-reel__caption { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 78px; padding: 18px; }
.project-reel__caption strong { font: 400 clamp(25px, 2.7vw, 38px)/1 var(--serif); letter-spacing: -.04em; }
.project-reel__caption small { max-width: 11ch; font: 10px/1.5 var(--mono); color: var(--muted); text-align: right; }
.project-reel__hint {
  position: absolute;
  z-index: 4;
  left: 50%;
  top: 43%;
  padding: 12px 16px;
  border: 1px solid rgb(242 240 233 / 25%);
  background: var(--ink);
  color: var(--paper);
  font: 9px/1.4 var(--mono);
  white-space: nowrap;
  opacity: 0;
  transform: translate(-50%, -30%);
  transition: opacity var(--duration-fast), transform var(--duration-normal) var(--easing-emphasized);
  pointer-events: none;
}
.project-reel__card:is(:hover, :focus-visible, [aria-expanded="true"]) .project-reel__surface {
  border-color: var(--olive-deep);
  transform: translateY(-8px);
}
.project-reel__card:is(:hover, :focus-visible) .project-reel__hint { opacity: 1; transform: translate(-50%, -50%); }
.project-reel__card:focus-visible { outline: 2px solid var(--olive-deep); outline-offset: 6px; }
.project-reel__footer { display: flex; justify-content: space-between; gap: 20px; padding-block: 10px 22px; color: var(--muted); font: 11px/1.6 var(--mono); }
.project-reel__footer p { margin: 0; }
.project-reel__selection { min-width: 12ch; text-align: right; }
.reel-enhanced .motion-portfolio__note { margin-bottom: 22px; }
.reel-enhanced .projects-table__head { display: none; }
.reel-enhanced .project__row { min-height: 76px; padding-block: 20px; }
.reel-enhanced .project__row strong { font-size: clamp(25px, 3vw, 44px); }
.reel-enhanced .project__preview-source { display: none; }
.project__close {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  min-height: 44px;
  margin-block: 20px 0;
  border: 0;
  border-bottom: 1px solid currentColor;
  background: transparent;
  color: var(--ink);
  font: 11px/1.5 var(--mono);
}
.project__details { transition-duration: var(--duration-slow); transition-timing-function: var(--easing-emphasized); }

/* Letter metrics stay in normal flow; only transforms and color animate. */
.cascade-text { display: inline-flex; align-items: center; gap: .35em; }
.cascade-text__word { display: inline-flex; overflow: hidden; line-height: 1.65; white-space: pre; }
.cascade-text__letter {
  display: inline-block;
  text-shadow: 0 1.65em currentColor;
  transition: transform var(--duration-normal) var(--easing-emphasized);
  transition-delay: calc(var(--letter-index) * 17ms);
}
.nav-sellers :is(.cascade-text__word, .cascade-text__letter) { margin-left: 0; }
.cascade-text:is(:hover, :focus-visible) .cascade-text__letter { transform: translateY(-1.65em); }
.site-nav a:focus-visible,
.motion-primary:focus-visible,
.motion-arrow:focus-visible,
.project-reel__controls button:focus-visible,
.project__close:focus-visible { outline: 2px solid var(--olive-deep); outline-offset: 5px; }
:is(.seller-feature, .contact, .integrations, .case-integration) :is(.motion-primary, .motion-arrow):focus-visible { outline-color: var(--sage); }

.motion-primary {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  --button-fill: var(--olive-deep);
  --button-on-fill: var(--paper);
  transition: color var(--duration-normal), border-color var(--duration-normal), transform var(--duration-fast);
}
.motion-primary::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 18px;
  top: calc(50% - 4px);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--button-fill);
  opacity: 0;
  transform: scale(0);
  transition: transform var(--duration-slow) var(--easing-emphasized), opacity var(--duration-fast);
}
.motion-primary:is(:hover, :focus-visible) { color: var(--button-on-fill); background: var(--ink); border-color: var(--button-fill); }
.motion-primary:is(:hover, :focus-visible)::before { opacity: 1; transform: scale(120); }
.motion-primary .motion-label { position: relative; display: inline-block; transition: transform var(--duration-normal) var(--easing-emphasized); }
.motion-primary:is(:hover, :focus-visible) .motion-label { transform: translateX(4px); }
.motion-primary.header-cta { --button-fill: var(--ink); background: transparent; }
.motion-primary.header-cta:is(:hover, :focus-visible) { background: transparent; }
.motion-primary.button--light { --button-fill: var(--sage); --button-on-fill: var(--ink); }
.motion-primary.button--light:is(:hover, :focus-visible) { background: var(--paper); }
.motion-primary :is(span, i) { pointer-events: none; }

.motion-arrow { position: relative; isolation: isolate; overflow: hidden; }
.motion-arrow .motion-label { position: relative; z-index: 1; }
.motion-arrow > [aria-hidden="true"] {
  position: relative;
  z-index: 0;
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: color var(--duration-normal), transform var(--duration-normal) var(--easing-emphasized);
}
.motion-arrow > [aria-hidden="true"]::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -1px;
  border-radius: 50%;
  background: var(--sage);
  transform: scale(0);
  transition: transform var(--duration-slow) var(--easing-emphasized);
}
.motion-arrow:is(:hover, :focus-visible) > [aria-hidden="true"] { color: var(--ink); transform: translate(2px, -2px); }
.motion-arrow:is(:hover, :focus-visible) > [aria-hidden="true"]::before { transform: scale(40); }
.motion-arrow:is(:hover, :focus-visible) { color: var(--ink); }
.motion-arrow.button { background: transparent; color: var(--ink); border-color: var(--olive); }
.motion-arrow.button--light { background: var(--paper); }
.motion-arrow:is(:hover, :focus-visible) .motion-label { color: var(--ink); }

/* Independent decorative raster layer. Text and original engine controls stay DOM. */
.quart-dither {
  position: absolute;
  z-index: 1;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: .36;
}
.product-engine { transform: translateY(calc(var(--hero-scroll, 0) * -14px)); }
.product-engine .specimen-node { translate: 0 calc(var(--hero-scroll, 0) * -12px); }
.motion-is-idle *, .motion-is-idle::before, .motion-is-idle::after, .motion-is-idle *::before, .motion-is-idle *::after,
.motion-document-hidden *, .motion-document-hidden *::before, .motion-document-hidden *::after { animation-play-state: paused !important; }
.product-engine:not([data-mode="interface"]) .specimen-scene--interface *,
.product-engine:not([data-mode="motion"]) .specimen-scene--motion *,
.product-engine:not([data-mode="logic"]) .specimen-scene--logic * { animation-play-state: paused; }
.js .reveal { transition-duration: var(--duration-slow), var(--duration-slow); transition-timing-function: var(--easing-emphasized); }
.product-engine__controls button, .contact h2 em { transition-duration: var(--duration-normal); }

@media (max-width: 760px) {
  .project-reel__stage { height: 330px; }
  .project-reel__toolbar { gap: 8px; }
  .project-reel__status { font-size: 10px; }
  .project-reel__controls { gap: 5px; }
  .project-reel__controls button { padding-inline: 9px; }
  .project-reel__caption { min-height: 84px; padding: 15px; }
  .project-reel__caption strong { font-size: 27px; }
  .project-reel__caption small { font-size: 9px; }
  .project-reel__image .project-art__word { font-size: 190px; }
  .project-reel__image .project-art--levelup b { font-size: 43px; }
  .project-reel__footer { font-size: 10px; }
  .reel-enhanced .project__row { min-height: 68px; }
  .reel-enhanced .project__row strong { font-size: 29px; }
  .project-reel__hint { padding: 9px 12px; font-size: 10px; }
}
@media (hover: none), (pointer: coarse) {
  .project-reel__hint { opacity: 1; top: auto; bottom: 72px; transform: translate(-50%, 0); }
  .project-reel__card:hover .project-reel__surface { transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .cascade-text__letter { transition: none; text-shadow: none; }
  .cascade-text:is(:hover, :focus-visible) .cascade-text__letter { transform: none; }
  .motion-primary::before, .motion-arrow > [aria-hidden="true"]::before { transition: none; }
  .product-engine, .product-engine .specimen-node { transform: none; translate: none; }
  .quart-dither { opacity: .35; }
}