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

:root {
  --yellow: #f8be22;
  --purple: #bc96fe;
  --green:  #51cf01;
  --red:    #f54025;
  --black:  #000;
  --white:  #fff;
  --border: 4px;
  --radius: 24px;
  --shadow: 8px 8px 0 var(--black);
}

body {
  background: var(--black);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem 3rem;
  font-family: 'Inter', sans-serif;
  -webkit-tap-highlight-color: transparent;
}

.hero {
  text-align: center;
  margin-bottom: 2.5rem;
}

.site-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(2.8rem, 12vw, 4.5rem);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--white);
  line-height: 0.95;
}

.hero-line {
  width: min(360px, 78vw);
  height: 5px;
  margin: 16px auto 14px;
  background: linear-gradient(90deg, var(--yellow), var(--purple), var(--green), var(--red));
  border: 2px solid var(--black);
}

.site-tagline {
  font-family: 'Inter', sans-serif;
  font-size: clamp(0.85rem, 2.5vw, 1rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
  font-style: italic;
}

.stage {
  position: relative;
  width: 100%;
  max-width: 900px;
  min-height: min(320px, 62vw);
  margin: 0 auto;
}

.card-drag {
  position: absolute;
  top: 0;
  width: min(220px, 42vw);
  touch-action: none;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  transition: left 0.52s cubic-bezier(0.45, 0, 0.55, 1),
              top 0.52s cubic-bezier(0.45, 0, 0.55, 1),
              transform 0.52s cubic-bezier(0.45, 0, 0.55, 1);
  will-change: left;
}

.card-drag.is-dragging {
  cursor: grabbing;
  z-index: 50;
  transition: none;
  transform: scale(1.04);
  filter: drop-shadow(0 14px 28px rgba(0, 0, 0, 0.45));
}

.card-drag .card-wrap {
  width: 100%;
}

.card-drag:has(.card-wrap.expanded) {
  width: min(300px, 88vw);
  z-index: 40;
}

.card-wrap {
  position: relative;
  width: min(220px, 42vw);
  height: min(300px, 58vw);
  perspective: 1200px;
  flex-shrink: 0;
  container-type: inline-size;
  container-name: nyong-card;
  transition: width 0.45s cubic-bezier(0.23, 1, 0.32, 1),
              height 0.45s cubic-bezier(0.23, 1, 0.32, 1),
              transform 0.15s ease-out;
  transform-style: preserve-3d;
}

.card-wrap.expanded {
  width: min(300px, 88vw);
  height: min(400px, 120vw);
  z-index: 10;
}

.card-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.65s cubic-bezier(0.23, 1, 0.32, 1);
}

.card-wrap.flipped .card-inner { transform: rotateY(180deg); }

.card-front,
.card-back {
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  border: var(--border) solid var(--black);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow: hidden;
  touch-action: manipulation;
  box-shadow: var(--shadow);
}

.card-front {
  display: flex;
  flex-direction: column;
  padding: clamp(14px, 4%, 20px);
  cursor: pointer;
  /* Explicit face so preserve-3d stacking is stable across engines */
  transform: rotateY(0deg);
}

.card-back {
  background: var(--white);
  transform: rotateY(180deg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(18px, 5%, 26px);
  gap: 10px;
  cursor: pointer;
}

/*
 * iOS Safari: descendants with transform/clip-path get their own composited
 * layer and ignore the parent's backface-visibility — so after rotateY(180)
 * the poster shape stays visible but mirrored. Drop poster from the render
 * tree as soon as flip starts (card chrome still animates). Full front-face
 * suppress past midpoint is applied via .is-front-suppressed from JS.
 */
.card-wrap.flipped .app-poster {
  display: none !important;
}

.card-wrap.is-front-suppressed .card-front,
.card-wrap.is-front-suppressed .card-front * {
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.card--green .card-front  { background: var(--green); }
.card--purple .card-front { background: var(--purple); }
.card--yellow .card-front { background: var(--yellow); }
.card--red .card-front    { background: var(--red); }

.card--green .card-heading  { color: var(--black); }
.card--purple .card-heading { color: var(--white); }
.card--yellow .card-heading { color: var(--black); }

.card-wrap.soon .card-front {
  background: #3f3f3f;
}

.card-wrap.soon .card-heading {
  color: var(--white);
}

.card-heading {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(1.6rem, 6vw, 2rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1;
  position: relative;
  z-index: 2;
}

.card-graphic {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  margin-top: 4px;
  overflow: visible;
}

.shape {
  width: 118%;
  max-width: none;
  height: auto;
  display: block;
}

/* Poster card layout (calendar, stretching) */
.card-front--poster {
  padding: clamp(12px, 4%, 16px);
  overflow: visible;
}

.app-poster {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
}

.poster-tilt-wrap {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 0;
  padding: 6px 0 4px 10px;
  overflow: visible;
}

.poster-geo {
  position: absolute;
  width: 58%;
  right: -4%;
  top: 6%;
  z-index: 0;
  pointer-events: none;
}

.poster-tilt-box {
  position: relative;
  z-index: 1;
  width: 98%;
  height: 100%;
  max-height: 220px;
  background: var(--black);
  transform-origin: center center;
  display: flex;
  align-items: flex-start;
  padding: clamp(16px, 5%, 22px) clamp(14px, 4%, 18px);
  overflow: visible;
}

/*
 * Tilt comes from clip-path only — extra CSS rotate() promotes a separate
 * compositor layer on iOS and punches through backface-visibility on flip.
 */
.poster-tilt-box--cal {
  clip-path: polygon(6% 6%, 98% 0%, 97% 90%, -7% 94%);
}

.poster-tilt-box--stretch {
  clip-path: polygon(5% 4%, 97% 8%, 99% 91%, -6% 95%);
}

.poster-tilt-box--webd {
  clip-path: polygon(4% 7%, 98% 2%, 96% 93%, -5% 96%);
}

.poster-tilt-box--pop {
  clip-path: polygon(3% 5%, 99% 3%, 95% 94%, -4% 92%);
}

.poster-tilt-text {
  font-family: 'Archivo Black', sans-serif;
  font-size: clamp(1.15rem, 14cqw, 2.05rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1.08;
  letter-spacing: -0.01em;
  text-align: left;
  text-transform: uppercase;
  max-width: 100%;
}

.poster-logo {
  width: 98%;
  max-width: 228px;
  height: auto;
  display: block;
  flex-shrink: 0;
  overflow: visible;
  margin-left: -4px;
}

.back-tag {
  font-family: 'Inter', sans-serif;
  font-size: clamp(0.6rem, 1.8vw, 0.68rem);
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--black);
  opacity: 0.45;
}

.back-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(1.45rem, 16cqw, 2.4rem);
  font-weight: 400;
  color: var(--black);
  letter-spacing: 0.03em;
  line-height: 0.95;
  overflow-wrap: anywhere;
  word-break: break-word;
  max-width: 100%;
}

.back-desc {
  font-size: clamp(0.78rem, 2.2vw, 0.88rem);
  font-weight: 700;
  color: #333;
  line-height: 1.55;
  flex: 1;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 5;
  -webkit-box-orient: vertical;
  word-break: keep-all;
}

.open-btn,
.soon-badge {
  position: absolute;
  bottom: clamp(16px, 5%, 24px);
  left: clamp(14px, 5%, 22px);
  z-index: 30;
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(0.95rem, 2.5vw, 1.1rem);
  letter-spacing: 0.08em;
  padding: 8px 14px;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  border: 3px solid var(--black);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  /* No opacity transition on default — prevents flash on page load */
  transition: transform 0.12s, box-shadow 0.12s;
  user-select: none;
  -webkit-user-select: none;
}

.open-btn {
  background: var(--black);
  color: var(--white);
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(0,0,0,0.25);
  cursor: pointer;
}

.card-wrap.flipped .open-btn,
.card-wrap.flipped .soon-badge {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity 0.2s ease 0.45s, visibility 0.2s ease 0.45s,
              transform 0.12s, box-shadow 0.12s;
}

.open-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 rgba(0,0,0,0.35);
}

.open-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 rgba(0,0,0,0.25);
}

.soon-badge {
  background: var(--red);
  color: var(--white);
}

@media (max-width: 720px) {
  body {
    justify-content: flex-start;
    padding: 1.35rem 0.75rem 2.25rem;
  }

  .hero {
    margin-bottom: 1.5rem;
  }

  .stage {
    width: 100%;
    max-width: 420px;
    min-height: 0;
  }

  .card-drag {
    width: calc((100% - 14px) / 2);
  }

  .card-wrap {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 4.05;
    --border: 3px;
    --radius: 18px;
    --shadow: 5px 5px 0 var(--black);
  }

  .card-drag:has(.card-wrap.expanded) {
    width: calc((100% - 14px) / 2);
    z-index: 40;
  }

  .card-wrap.expanded {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 4.05;
  }

  .card-front--poster {
    padding: 8px 8px 10px;
  }

  .app-poster {
    gap: 6px;
  }

  .poster-tilt-wrap {
    padding: 4px 2px 2px 4px;
  }

  .poster-geo {
    width: 48%;
    right: -2%;
    top: 4%;
    opacity: 0.9;
  }

  /* Softer clip + less rotate so text/shapes don't get cut */
  .poster-tilt-box {
    width: 100%;
    max-height: none;
    padding: 12px 10px 14px;
    overflow: hidden;
  }

  .poster-tilt-box--cal,
  .poster-tilt-box--stretch,
  .poster-tilt-box--webd,
  .poster-tilt-box--pop {
    clip-path: polygon(4% 3%, 97% 1%, 98% 96%, 2% 98%);
  }

  .poster-tilt-text {
    font-size: clamp(0.72rem, 10.8cqw, 1.05rem);
    line-height: 1.15;
    letter-spacing: -0.025em;
  }

  .poster-logo {
    width: 92%;
    max-width: none;
    margin-left: -2px;
    /* Shrink stroked SVG text so outline doesn't clip */
    transform: scale(0.9);
    transform-origin: left center;
  }

  .card-back {
    padding: 12px 12px 48px;
    gap: 6px;
  }

  .back-tag {
    font-size: 0.55rem;
    letter-spacing: 0.1em;
  }

  .back-title {
    font-size: clamp(1.15rem, 14cqw, 1.55rem);
  }

  .back-desc {
    font-size: clamp(0.68rem, 7.5cqw, 0.78rem);
    line-height: 1.4;
    -webkit-line-clamp: 4;
  }

  .open-btn,
  .soon-badge {
    bottom: 10px;
    left: 10px;
    font-size: 0.82rem;
    padding: 5px 10px;
    min-height: 30px;
    border-width: 2px;
  }
}

@media (max-width: 380px) {
  .poster-tilt-text {
    font-size: clamp(0.72rem, 10.5cqw, 1rem);
  }

  .back-desc {
    -webkit-line-clamp: 3;
  }
}