/* ============================================================
   JEON STACK — Card-style case study
   Outer: near-black deep green (#030c07)
   Card:  deep forest green (#0d2b22) — the page itself is the card
   ============================================================ */

:root {
  --js-card:   #0d2b22;
  --js-ink:    #f0ece6;
  --js-mid: white;
  --js-muted:  rgba(240, 236, 230, 0.42);
  --font-size-base: 1rem;
}

/* ── Page base ── */
body {
  background: var(--outer);
  color: var(--js-ink);
  min-height: 100vh;
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;

  background-image: url(../assets/World/texture.png);
  background-repeat: repeat;
  opacity: 0.05;
}

/* ============================================================
   OUTER NAV — sits on the dark outer background
   ============================================================ */

.outer-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0.75rem 1.5rem;
  top: 0;
  z-index: 200;
  position: sticky;
}

.close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--close-button);
  color: var(--close-button-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  text-decoration: none;
  flex-shrink: 0;
  order: 1;
  transition: background 0.2s, color 0.2s;
}

.close:hover { 
  background: var(--close-hover-button-bg);
  color: var(--close-hover-button-text);
}

/* ============================================================
   PROJECT NAVIGATION STACK
   Peek card sits behind the hero card; only its top 16px strip
   is visible. Hero is pushed down 16px to expose the strip.
   ============================================================ */

.js-stack {
  position: relative;
}

/* Hero flows naturally — pushed down 60px so peek strips are visible above it */
.js-stack .js-hero-card {
  position: relative;
  margin-top: 80px;
  min-height: unset;
  z-index: 4;
  will-change: transform;
  transition: transform 200ms ease-out;
}

.js-peek-card {
  position: absolute;
  left: 0;
  right: 0;
  height: 32px;
  border-radius: 20px 20px 0 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 4px;
  text-decoration: none;
  cursor: pointer;
  will-change: transform;
  transition: transform 200ms ease-out;
}


/* Positions by DOM order */
.js-peek-card:nth-child(1) { top: 0;    z-index: 1; }
.js-peek-card:nth-child(2) { top: 20px; z-index: 2; }
.js-peek-card:nth-child(3) { top: 40px; z-index: 3; }
.js-peek-card:nth-child(4) { top: 60px; z-index: 4; }

/* Colors by project */
.js-peek-card--forgotten { background: var(--background-fp-card); }
.js-peek-card--livespace { background: var(--background-ls-card); }
.js-peek-card--seoul     { background: var(--background-sf-card); }
.js-peek-card--tesla     { background: var(--background-tc-card); }

/* Hover */
.js-peek-card:hover ~ .js-peek-card,
.js-peek-card:hover ~ .js-hero-card {
  transform: translateY(7px);
}

.js-peek-card__label {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 150ms ease-out;
}

.js-peek-card--forgotten .js-peek-card__label { color: var(--font-color-fp); }
.js-peek-card--livespace .js-peek-card__label { color: var(--font-color-ls); }
.js-peek-card--seoul     .js-peek-card__label { color: var(--font-color-sf); }
.js-peek-card--tesla     .js-peek-card__label { color: var(--font-color-tc); }

.js-peek-card:hover .js-peek-card__label {
  opacity: 1;
}

/* ============================================================
   MAIN WRAPPER — constrains and centers the cards
   ============================================================ */

.js-main {
  padding: 0 1.25rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ============================================================
   CARDS — hero (rounded top) + content (rounded bottom)
   ============================================================ */

.js-hero-card,
.js-content-card {
  background: var(--js-card);
}

.js-hero-card    { border-radius: 20px 20px 0 0; overflow: hidden; }
.js-content-card { border-radius: 0 0 20px 20px; overflow: hidden; }

/* Padded region inside a card */
.js-pad {
  padding: 2.25rem 2.5rem;
}

/* ============================================================
   TITLE + TAGLINE
   ============================================================ */

.js-title {
  font-size: 2rem;
  font-weight: 500;
  color: var(--js-ink);
  margin: 0 0 2.5rem;
  display: flex;
  letter-spacing: 0.10rem;
  text-transform: uppercase;
  flex-shrink: 0;
  font-weight: 700;
  font-size: 1rem;
  gap: 0.5rem;
}

.js-tagline {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.js-tagline__quote {
  font-style: italic;
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--js-ink);
  margin: 0;
  padding-left:20rem;
}

.js-tagline__tags {
  font-size: var(--font-size-base);
  text-align: right;
  line-height: 1.65;
  margin: 0;
  max-width: 25ch;
}

/* ============================================================
   PHOTO STRIP — full card width, bleeds to card edges
   ============================================================ */

.js-strip {
  margin-top: 2.5rem;
  transform: translateY(var(--parallax-y, 0px));
  will-change: transform;
}

.js-strip img {
  width: 100%;
  height: clamp(100%, 22vw, 240px);
  object-fit: cover;
  display: block;
  border-radius: 20px;
}

/* ============================================================
   LAMP + CREDITS BLOCK
   ============================================================ */

.js-credits-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.25rem;
  /* align-items: center; */
  margin-top: 2.75rem;
  margin-bottom: 2.75rem;
  min-height: calc(130vh - 64px);
}

.js-lamp-photo {
  line-height: 0;
  transform: translateX(15rem) translateY(var(--parallax-y, 0px));
  will-change: transform;
}

.js-lamp-photo img {
  width: 100%;
  height: auto;
  display: block;
}

.js-credits-content {
  padding-top: 20rem;
}

.js-credits-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 0.875rem;
  margin: 0 0 1.125rem;
  padding: 0;
}

.js-credits-list dt {
  font-size: var(--font-size-base);
  color: var(--js-muted);
  font-weight: 500;
  white-space: nowrap;
  align-self: baseline;
}

.js-credits-list dd {
  font-size: var(--font-size-base);
  color: var(--js-mid);
  margin: 0;
  align-self: baseline;
}

.js-credits-note {
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--js-mid);
  margin: 0;
  padding-right: 20rem;
}

/* ============================================================
   PULL QUOTE
   ============================================================ */

.js-pullquote {
  font-size: var(--font-size-base);
  color: var(--js-mid);
  padding-right: 20rem;
  margin-top: 30rem;
}

/* ============================================================
   CONTENT SECTIONS
   ============================================================ */

.js-section {
  padding-top: 4rem;
  padding-bottom: 4rem;
  padding-left: 20rem;
}

.js-section:first-child {
  padding-top: 0;
  border-top: none;
}

.js-section--last {
  padding-bottom: 0;
}

.js-section__label {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--js-ink);
  margin: 0 0 1rem;
  letter-spacing: 0.005em;
}

.js-section p {
  font-size: var(--font-size-base);
  line-height: 1.75;
  color: var(--js-mid);
  margin: 0 0 1.125rem;
  padding-right: 40rem;
}

.js-section p:last-child { margin-bottom: 0; }

/* ── ArUco markers ── */
.js-markers {
  display: flex;
  gap: 1rem;
  margin: 1.25rem 0 1rem;
}

.js-markers img {
  width: 20%;
  height: auto;
  display: block;
}

.js-caption {
  font-size: var(--font-size-base) !important;
  color: var(--js-muted) !important;
  line-height: 1.6;
  margin: 0 0 1.125rem !important;
}

/* ── System diagram ── */
.js-diagram {
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  margin-top: 1.25rem;
  width: 90%
}

.js-diagram img {
  width: 100%;
  height: 100%;
  display: block;
}

/* ── Video ── */
.js-video {
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--outer);
  margin-top: 1rem;
  width: 90%;
  height:90%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.js-video iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
  border-radius: 10px;
}

/* ── What I worked on ── */
.js-work-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.js-work-item {
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--js-mid);
}

/* ============================================================
   NEXT PROJECT (dark, outside cards)
   ============================================================ */

.js-next {
  padding: 1.5rem 8rem 0.5rem;
  display:flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}

.js-next-label {
  display: block;
  font-size: var(--font-size-base);
  color: var(--next-label);
  font-weight: 500;
  letter-spacing: 0.1rem;
  text-transform: uppercase;
}

.js-next-link {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--next-link);
  text-decoration: none;
  transition: color 0.2s;
}

.js-next-link:hover { color: var(--next-hover-link); }

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */

[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  will-change: transform, opacity;
  transition:
    opacity  820ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 820ms cubic-bezier(0.22, 1, 0.36, 1);
}

[data-animate="fade-only"] {
  opacity: 0;
  transform: none;
  will-change: opacity;
  transition: opacity 700ms cubic-bezier(0.22, 1, 0.36, 1);
}

[data-animate="illustration"] {
  opacity: 0;
  transform: translateY(35px);
  will-change: transform, opacity;
  transition:
    opacity  950ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 950ms cubic-bezier(0.22, 1, 0.36, 1);
}

[data-animate].revealed,
[data-animate="fade-only"].revealed,
[data-animate="illustration"].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 640px) {
  .js-main { padding: 0 0.75rem 2rem; }

  .js-pad { padding: 1.75rem 1.5rem; }

  .js-hero-card    { border-radius: 16px 16px 0 0; }
  .js-content-card { border-radius: 0 0 16px 16px; }

  .js-tagline {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .js-tagline__tags { text-align: left; }

  .js-strip img { height: 140px; }

  .js-credits-block {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .js-pullquote {
    text-align: left;
    padding-left: 0;
  }

  .js-section {
    padding-top: 2.5rem;
    padding-bottom: 2.5rem;
  }
}