/* ==========================================================================
   Podvoiska — home (dark card grid)
   Figma: Concepts / Desktop - 1 (2543:13520)
   ========================================================================== */

:root {
  --bg: #1b1b1b;
  --card: #464441;
  --card-hover: #4f4d4a;
  --ink: #fff7e9;
  --ink-soft: #b9b3a8;
  --ink-muted: #a29f9a;

  --font-display: 'Host Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --page-max: 1338px;
  --gutter: clamp(16px, 3.6vw, 51px);
  --gap: 24px;
  --radius: 20px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding: 42px var(--gutter) 132px;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ---------- header ---------- */
.site-header {
  --header-top: 42px; /* where it sits on load (the body padding) */
  position: sticky; /* pinned while scrolling, sharp in front of the top blur */
  top: var(--header-top);
  z-index: 5;
  max-width: var(--page-max);
  margin: 0 auto 72px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  transition: transform .5s var(--ease), opacity .35s var(--ease);
}
/* scrolling down slides it up and out; scrolling up brings it back (js/site.js). The blur stays. */
.header-hidden .site-header {
  transform: translateY(calc(-100% - var(--header-top) - 8px));
  opacity: 0;
  pointer-events: none;
}
.brand { display: flex; flex-direction: column; gap: 8px; }
.brand__name {
  font-size: 31px;
  line-height: .92;
  letter-spacing: -.01em;
}
.brand__role {
  font-family: var(--font-body);
  font-size: 20px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.site-nav { display: flex; gap: 16px; }
.site-nav a {
  font-size: 18px;
  line-height: .92;
  letter-spacing: -.01em;
  transition: opacity .2s;
}
.site-nav a:hover { opacity: .65; }

/* ---------- grid ---------- */
.grid {
  max-width: var(--page-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.card {
  position: relative;
  aspect-ratio: 430 / 432;
  border-radius: var(--radius);
  overflow: hidden;
  isolation: isolate;
}

/* ---------- visual card ----------
   Default: the visual fills the card.
   Hover (Figma 2546:12570): the visual shrinks into a 275/432-high panel at the bottom,
   16px in from the sides, and the title + meta fade in above it. */
.card--visual {
  display: block;
  background: var(--card-hover);
  --panel-h: 63.66%; /* 275 / 432 */
}
.card__frame {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: #2a2928;
  transition:
    top .6s var(--ease), left .6s var(--ease), right .6s var(--ease),
    border-radius .6s var(--ease);
}
.card__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card__head {
  position: absolute;
  left: 30px; right: 30px;
  bottom: calc(var(--panel-h) + 42px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .35s var(--ease), transform .5s var(--ease);
}
.card--visual .card__arrow { stroke: var(--ink); }

.card--visual:is(:hover, :focus-visible) .card__frame {
  top: calc(100% - var(--panel-h));
  left: 16px; right: 16px;
  border-radius: 16px 16px 0 0;
}
.card--visual:is(:hover, :focus-visible) .card__head {
  opacity: 1;
  transform: none;
  transition-delay: .12s;
}
.card--visual:is(:hover, :focus-visible) .card__arrow { transform: translate(4px, -4px); }
.card--visual:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

/* ---------- before/after card (API playground) ----------
   Figma: Concepts / claidai-03 (2569:41016). A square 1630×1630 composition, cover-fitted to the frame.
   The photo window loops a divider between a pixelated "before" and the sharp "after". */
@property --ba-x {
  syntax: '<percentage>';
  inherits: true;
  initial-value: 36%;
}
.card__frame:has(.ba) { container-type: size; background: #f3f5f9; }
.ba {
  position: absolute;
  left: 50%; top: 50%;
  width: max(100cqw, 100cqh);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  container-type: inline-size;
  animation: ba-sweep 7s infinite;
}
@keyframes ba-sweep {
  0%   { --ba-x: 36%; animation-timing-function: linear; }
  8%   { --ba-x: 36%; animation-timing-function: cubic-bezier(.65, 0, .35, 1); }
  34%  { --ba-x: 84%; animation-timing-function: linear; }
  44%  { --ba-x: 84%; animation-timing-function: cubic-bezier(.65, 0, .35, 1); }
  74%  { --ba-x: 16%; animation-timing-function: linear; }
  82%  { --ba-x: 16%; animation-timing-function: cubic-bezier(.65, 0, .35, 1); }
  100% { --ba-x: 36%; }
}
.ba__base, .ba__btn { position: absolute; inset: 0; width: 100%; height: 100%; }
/* positions are % of the 1630px Figma frame */
.ba__photo {
  position: absolute;
  left: 37.75%; top: 18.21%;
  width: 49.82%; height: 33.26%;
  overflow: hidden;
}
.ba__photo img { position: absolute; inset: 0; width: 100%; height: 100%; }
.ba__before { clip-path: inset(0 calc(100% - var(--ba-x)) 0 0); }
.ba__line {
  position: absolute;
  top: 0; bottom: 0;
  left: var(--ba-x);
  width: max(1px, .12cqw);
  background: #fff;
  transform: translateX(-50%);
}
.ba__handle {
  position: absolute;
  top: 48.8%;
  left: var(--ba-x);
  width: 3.1cqw;
  aspect-ratio: 1;
  border: max(1.5px, .27cqw) solid #fff;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
/* the semi-transparent Download button sits over the photo, so keep a copy of it on top */
.ba__btn { clip-path: inset(18.93% 9.5% 78.64% 82.96% round .55cqw); }

/* ---------- text card ---------- */
.card--text {
  background: var(--card);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 42px;
  padding: 32px;
  transition: background-color .35s var(--ease);
}
.card__body { display: flex; flex-direction: column; gap: 16px; }
.card__title {
  font-weight: 400;
  font-size: 32px;
  line-height: .92;
  letter-spacing: -.01em;
  max-width: 13em;
}
.card__arrow {
  display: inline-block;
  width: 32px;
  height: 32px;
  margin: -6px 0 -4px 8px;
  vertical-align: middle;
  fill: none;
  stroke: var(--ink-muted);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform .35s var(--ease), stroke .35s var(--ease);
}
.card__desc {
  font-weight: 300;
  font-size: 16px;
  line-height: 1.3;
}
.card__meta {
  display: flex;
  gap: 12px;
  font-weight: 300;
  font-size: 19px;
  line-height: .92;
  letter-spacing: -.01em;
  color: var(--ink-muted);
}
@media (hover: hover) {
  .card--text:hover { background: var(--card-hover); }
  .card--text:hover .card__arrow { transform: translate(4px, -4px); stroke: var(--ink); }
}
.card--text:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

/* ---------- Gen AI Illustrations card: sliding illustrations above the text (Figma: Concepts / Section 1, 2573:41213) ---------- */
/* icons row: 938×218 in a 430 card, sits 6px above the card's top edge */
.card__marquee {
  position: absolute;
  left: 0; right: 0;
  top: -1.4%;
  height: 50.5%; /* 218 / 432 */
  overflow: hidden;
  pointer-events: none;
}
.card__marquee-track {
  display: flex;
  height: 100%;
  width: max-content;
  animation: card-marquee 34s linear infinite;
}
.card__marquee-track img { height: 100%; width: auto; max-width: none; }
/* two identical tiles side by side; moving by one tile width loops seamlessly */
@keyframes card-marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- reveal on scroll (js/site.js), like the Framer site ---------- */
.js :is(.grid > .card, .project__head, .project__body > *) {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 1.2s cubic-bezier(.2, .9, .25, 1) var(--dl, .1s),
    transform 1.2s cubic-bezier(.2, .9, .25, 1) var(--dl, .1s),
    background-color .35s var(--ease);
}
.js :is(.grid > .card, .project__head, .project__body > *).is-in { opacity: 1; transform: none; }

/* ---------- bottom and top blur (js/site.js) ---------- */
.bottom-blur {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  height: 84px;
  z-index: 3;
  pointer-events: none;
}
.top-blur {
  position: fixed;
  left: 0; right: 0; top: 0;
  height: 84px;
  z-index: 4;
  pointer-events: none;
  transition: transform .5s var(--ease);
}
/* the top blur belongs to the header: it slides away and back together with it.
   (it slides rather than fades, because opacity below 1 switches backdrop blur off) */
.header-hidden .top-blur { transform: translateY(-100%); }
.bottom-blur > div, .top-blur > div { position: absolute; inset: 0; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .card__marquee { height: 36%; } /* text wraps more on narrower cards, keep the icons clear of the title */
  .card__title { font-size: 28px; }
}
@media (max-width: 640px) {
  body { padding-top: 28px; padding-bottom: 64px; }
  .site-header { --header-top: 28px; margin-bottom: 40px; }
  .brand__name { font-size: 26px; }
  .brand__role { font-size: 17px; }
  .site-nav a { font-size: 16px; }
  .grid { grid-template-columns: 1fr; gap: 16px; }
  .card--text { padding: 24px; gap: 32px; }
  .card__meta { font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  .site-header, .top-blur { transition: none; }
  .card__frame, .card__head, .card__arrow, .card--text { transition: none; }
  .ba { animation: none; }
  .card__marquee-track { animation: none; }
  .js :is(.grid > .card, .project__head, .project__body > *) { opacity: 1; transform: none; transition: none; }
}