/* ==========================================================================
   Greater™ - Motion Architecture
   Subtle, precision-engineered transitions. Everything here respects
   prefers-reduced-motion.
   ========================================================================== */

:root {
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Page transitions: the page fades in on load and fades out when the
   visitor navigates to another page on this site. Only active when JS runs. */
/* Fallback for browsers without native view transitions (Firefox, Safari) */
.js:not(.vt) body {
  opacity: 0;
}

.js:not(.vt) body.page-ready {
  opacity: 1;
  transition: opacity 0.5s ease;
}

.js:not(.vt) body.page-leaving {
  opacity: 0;
  transition: opacity 0.2s ease;
}

/* Chromium: the old page stays on screen until the new one is painted, so no white flash */
@view-transition {
  navigation: auto;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.35s;
}

/* Loading progress bar, shown the moment a link is clicked */
.nav-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  opacity: 0;
  background-color: var(--color-primary);
  z-index: 3000;
  pointer-events: none;
  transition: width 8s cubic-bezier(0.1, 0.7, 0.2, 1), opacity 0.3s ease;
}

.nav-progress.active {
  width: 85%;
  opacity: 1;
}

/* Skeleton loaders: shimmer while product, project and spec images load */
@keyframes skeleton-shimmer {
  from { background-position: 100% 0; }
  to   { background-position: -100% 0; }
}

.skeleton {
  background: linear-gradient(90deg, #E2E8F0 25%, #F8FAFC 50%, #E2E8F0 75%);
  background-size: 300% 100%;
  animation: skeleton-shimmer 1.4s ease-in-out infinite;
}

/* Images: shimmer box until loaded, then a short fade-in */
img.lazy-img:not(.is-loaded) {
  background: linear-gradient(90deg, #E2E8F0 25%, #F8FAFC 50%, #E2E8F0 75%);
  background-size: 300% 100%;
  animation: skeleton-shimmer 1.4s ease-in-out infinite;
  aspect-ratio: 16 / 10;
}

/* Images inside a card already show the card's skeleton behind them */
.skeleton img.lazy-img:not(.is-loaded) {
  background: none;
  animation: none;
  aspect-ratio: auto;
}

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

img.lazy-img.is-loaded {
  animation: image-fade-in 0.5s ease both;
}

/* Page skeleton: covers the page until it has loaded */
.page-skeleton {
  position: fixed;
  inset: 0;
  z-index: 900;
  background-color: #FFFFFF;
  padding-top: calc(var(--header-height) + 1px);
  overflow: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.page-skeleton.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.skel-hero {
  height: 340px;
  background-color: #161616;
  display: flex;
  align-items: center;
}

.skel-hero-inner {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

/* Shimmer for the dark hero placeholders */
.skeleton-dark {
  background: linear-gradient(90deg, #242424 25%, #3A3A3A 50%, #242424 75%);
  background-size: 300% 100%;
  animation: skeleton-shimmer 1.4s ease-in-out infinite;
}

.skel-pill {
  width: 170px;
  height: 28px;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.skel-title {
  width: 60%;
  height: 38px;
  border-radius: 6px;
}

.skel-title-short {
  width: 40%;
}

.skel-desc {
  width: 48%;
  height: 16px;
  border-radius: 6px;
  margin-top: 0.5rem;
}

.skel-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.skel-line {
  height: 14px;
  width: 100%;
  border-radius: 6px;
  margin-bottom: 12px;
}

.skel-line-sm { width: 25%; }
.skel-line-md { width: 55%; }

.skel-line-lg {
  height: 34px;
  width: 60%;
  margin: 1.5rem 0 1rem 0;
}

.skel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.skel-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.skel-media {
  height: 200px;
  border-radius: 10px;
  margin-bottom: 0.4rem;
}

@media (max-width: 1024px) {
  .skel-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .skel-hero { height: 220px; }
  .skel-title { height: 26px; width: 85%; }
  .skel-title-short { width: 60%; }
  .skel-grid { grid-template-columns: 1fr; }
}

/* Hero entrance */
@keyframes rise-in {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}

@keyframes settle-in {
  from { opacity: 0; transform: scale(1.08); }
  to   { opacity: 0.28; transform: scale(1); }
}

.hero-enter {
  animation: rise-in 0.8s var(--ease-out-expo) both;
  animation-delay: var(--delay, 0s);
}

.hero-backdrop {
  animation: settle-in 2.4s var(--ease-out-expo) both;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out-expo),
              transform 0.6s var(--ease-out-expo),
              translate 0.6s var(--ease-out-expo);
  will-change: opacity, transform;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Once the entrance has finished, drop the stagger delay and speed up
   transitions so hover feedback responds immediately (set by main.js). */
.reveal.settled {
  transition-delay: 0s;
  transition-duration: 0.35s;
  transition-property: opacity, transform, translate, box-shadow, border-color, background-color, color;
}

.reveal-fade {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.reveal-fade.revealed {
  opacity: 1;
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger delays for grids (applied while the entrance plays) */
.stagger-1 { transition-delay: 0.08s; }
.stagger-2 { transition-delay: 0.16s; }
.stagger-3 { transition-delay: 0.24s; }
.stagger-4 { transition-delay: 0.32s; }

/* Press feedback on buttons */
.btn:active {
  transform: scale(0.98);
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .js:not(.vt) body,
  .js:not(.vt) body.page-ready,
  .js:not(.vt) body.page-leaving {
    opacity: 1;
    transition: none;
  }

  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none;
  }

  .skeleton {
    animation: none;
  }

  img.lazy-img.is-loaded {
    animation: none;
  }

  img.lazy-img:not(.is-loaded) {
    animation: none;
  }

  .page-skeleton {
    transition: none;
  }

  .hero-enter,
  .hero-backdrop {
    animation: none;
  }

  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-fade {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}