/* ══════════════════════════════════
   PARTNERS SECTION  (#ps)
══════════════════════════════════ */
.section.s5 {
  background: #fff;
}

/* ── CURTAIN REVEAL ── */
.section-others {
  position: relative;
  z-index: 20;
}

.reveal-trigger-spacer {
  height: 100vh;
  position: relative;
  z-index: 20;
}

#ps {
  position: relative;
  --dark: #1a1a1a;
  --muted: #aaa;
  --white: #fff;
  --border: #d8d4c4;
  --red: #6b1a1a;
}

/* Heading */
.ps-heading {
  text-align: center;
  padding: 40px 40px 48px;
}
.ps-heading h2 {
  font-family: "Courier Prime", monospace;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--red);
}

/* ── Scroll wrapper: gives scroll height ── */
#ps-scroll-track {
  position: relative;
}

/* ── Sticky container ── */
#ps-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Layout: left nav | center image | right text ── */
.ps-layout {
  display: grid;
  grid-template-columns: 1fr clamp(300px, 40vw, 580px) 1fr; /* center = image */
  align-items: center;
  width: 100%;
  gap: 48px;
}

/* ── LEFT NAV ── */
.ps-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-self: end;
  align-self: center;
  opacity: 0;
  transition: opacity 0.65s ease;
}
.ps-nav.ps-revealed {
  opacity: 1;
}
.ps-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 400;
  color: var(--muted);
  transition: color 0.35s ease;
  background: none;
  border: none;
  padding: 10px 0;
  text-align: left;
  line-height: 1.4;
  letter-spacing: 0.01em;
  font-family: "Courier Prime", monospace;
}
.ps-nav-item::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--dark);
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.ps-nav-item.active {
  color: var(--dark);
  /* font-weight: 700 — bỏ bold, tránh layout shift khi chuyển tab */
}
.ps-nav-item.active::before {
  opacity: 1;
}
.ps-nav-item:hover {
  color: var(--dark);
}

/* ── CENTER: image frame wrapper (zoom target) ── */
#ps-frame-wrap {
  position: relative;
  width: 100%;
  transform-origin: center center;
  /* OPT: bỏ will-change thường trực — JS set transform trực tiếp qua style */
}

.ps-image-frame {
  width: 100%;
  aspect-ratio: 3/4; /* giữ hình chữ nhật */
  max-height: 90vh; /* to hơn, căn giữa theo cột */
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}

/* Each slide */
.ps-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  opacity: 0;
  transform: translateY(28px) scale(0.97);
  transition:
    opacity 0.55s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}
.ps-slide.show {
  opacity: 1;
  transform: none;
}

/* ── RIGHT CONTENT ── */
.ps-right {
  position: relative;
  /* FIX CLS: height cố định thay vì min-height — tránh layout shift khi panel
     chuyển từ absolute → relative làm đẩy toàn bộ layout */
  height: 280px;
  justify-self: stretch;
  align-self: center;
  text-align: right;
  opacity: 0;
  transition: opacity 0.65s ease;
}
.ps-right.ps-revealed {
  opacity: 1;
}
.ps-panel {
  position: absolute; /* FIX CLS: luôn absolute, không đổi sang relative */
  inset: 0;
  opacity: 0;
  transform: translateX(32px) translateY(24px) scale(0.96);
  transition:
    opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}
.ps-panel.show {
  opacity: 1;
  transform: none;
  pointer-events: all;
  /* FIX CLS: đã xóa position: relative — đây là thủ phạm gây CLS 1.0 */
}
.ps-panel p {
  font-size: 13.5px;
  line-height: 1.7;
  color: #555;
  margin-bottom: 24px;
  font-weight: 300;
  /* max-width: 220px — đã bỏ để text trải dài theo cột */
}
.ps-panel h3 {
  font-family: "Courier Prime", monospace;
  font-size: clamp(1.1rem, 1.6vw, 1.4rem);
  font-weight: 400;
  color: var(--dark);
  margin-bottom: 12px;
}
.ps-panel .ps-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--red);
  border: 1px solid var(--red);
  border-radius: 20px;
  padding: 3px 12px;
  margin-bottom: 16px;
}
.ps-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-family: "Courier Prime", monospace;
  color: var(--dark);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  transition:
    border-color 0.3s ease,
    color 0.3s ease;
}
.ps-cta:hover {
  color: var(--red);
  border-color: var(--red);
}