/* OpenAIOPC 3D Particle Card — light glass + brand blue #2D5CF7 */

.opc-pc {
  --opc-blue: #2d5cf7;
  --opc-blue-deep: #06112b;
  --opc-bg: #f4f7fc;
  --opc-glow: #6d90ff;
  --opc-glass: rgba(45, 92, 247, 0.08);
  --mouse-x: 50%;
  --mouse-y: 50%;
  position: relative;
  width: 100%;
  min-height: min(72vh, 640px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 20px 64px;
  overflow: hidden;
  isolation: isolate;
  background: transparent;
  border-radius: 0;
  border: none;
  min-height: auto;
  padding: 24px 12px 32px;
}

.opc-pc__stage {
  position: relative;
  z-index: 1;
  width: min(100%, 560px);
  perspective: 1200px;
  perspective-origin: 50% 50%;
}

.opc-pc__card {
  position: relative;
  width: 100%;
  aspect-ratio: 1.58 / 1;
  border-radius: 26px;
  transform-style: preserve-3d;
  will-change: transform;
  cursor: pointer;
  outline: none;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96) 0%, rgba(244, 248, 255, 0.94) 48%, rgba(236, 242, 255, 0.96) 100%);
  border: 1px solid rgba(45, 92, 247, 0.18);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.8),
    0 20px 48px rgba(45, 92, 247, 0.12),
    0 8px 24px rgba(15, 23, 42, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  transition: box-shadow 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  backdrop-filter: blur(12px);
}

.opc-pc__card:focus-visible {
  box-shadow:
    0 0 0 2px rgba(45, 92, 247, 0.45),
    0 20px 48px rgba(45, 92, 247, 0.16),
    0 8px 24px rgba(15, 23, 42, 0.08);
}

.opc-pc__card.is-pressed {
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.opc-pc__layer {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  transform-style: preserve-3d;
}

/* Layer 1 — grid */
.opc-pc__layer--grid {
  transform: translateZ(8px);
  background-image:
    linear-gradient(rgba(45, 92, 247, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 92, 247, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  background-position: center;
  opacity: 0.7;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 45%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 45%, #000 20%, transparent 75%);
}

/* Layer 2 — ambient glow */
.opc-pc__layer--glow {
  transform: translateZ(18px);
  background:
    radial-gradient(ellipse 55% 45% at 30% 25%, rgba(45, 92, 247, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 78% 72%, rgba(109, 144, 255, 0.10) 0%, transparent 55%);
}

/* Layer 5 — dynamic shine */
.opc-pc__shine {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  transform: translateZ(72px);
  background: radial-gradient(
    circle 180px at var(--mouse-x) var(--mouse-y),
    rgba(255, 255, 255, 0.75) 0%,
    rgba(109, 144, 255, 0.18) 28%,
    transparent 62%
  );
  mix-blend-mode: soft-light;
  opacity: 0.9;
}

.opc-pc__inner-edge {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  transform: translateZ(4px);
  box-shadow: inset 0 0 36px rgba(45, 92, 247, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.7);
}

/* Layer 3 — content */
.opc-pc__content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(18px, 4.2%, 28px) clamp(20px, 4.8%, 32px);
  transform: translateZ(36px);
  color: #1e293b;
}

.opc-pc__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  transform: translateZ(8px);
}

.opc-pc__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.opc-pc__brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(145deg, #6d90ff 0%, #2d5cf7 100%);
  border: 1px solid rgba(45, 92, 247, 0.35);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(45, 92, 247, 0.22);
}

.opc-pc__brand-mark span {
  display: grid;
  place-items: center;
  font-family: Syne, Inter, sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
}

.opc-pc__brand-text {
  font-family: Syne, Inter, sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: rgba(71, 85, 105, 0.85);
  text-transform: uppercase;
}

/* Layer 4 — badge */
.opc-pc__badge {
  transform: translateZ(48px);
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: #2d5cf7;
  background: rgba(45, 92, 247, 0.08);
  border: 1px solid rgba(45, 92, 247, 0.2);
  white-space: nowrap;
  backdrop-filter: blur(8px);
}

.opc-pc__main {
  transform: translateZ(42px);
  margin: 8px 0 auto;
  max-width: 88%;
}

.opc-pc__title {
  margin: 0;
  font-family: Syne, Inter, sans-serif;
  font-size: clamp(1.55rem, 4.2vw, 2.15rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: #0f172a;
}

.opc-pc__subtitle {
  margin: 2px 0 0;
  font-family: Syne, Inter, sans-serif;
  font-size: clamp(1.35rem, 3.6vw, 1.85rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
  background: linear-gradient(90deg, #4f7cff 0%, #2d5cf7 55%, #6d90ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.opc-pc__desc {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: clamp(0.78rem, 1.5vw, 0.9rem);
  line-height: 1.65;
  color: rgba(71, 85, 105, 0.88);
  font-weight: 400;
}

.opc-pc__bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  transform: translateZ(40px);
}

.opc-pc__meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.opc-pc__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.opc-pc__tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 9px;
  border-radius: 6px;
  font-size: 10px;
  letter-spacing: 0.04em;
  color: #334155;
  background: rgba(45, 92, 247, 0.06);
  border: 1px solid rgba(45, 92, 247, 0.14);
}

.opc-pc__footer-line {
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(100, 116, 139, 0.7);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.opc-pc__index {
  flex-shrink: 0;
  font-family: Syne, Inter, sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(71, 85, 105, 0.75);
  font-variant-numeric: tabular-nums;
}

/* Page shell for /test */
#page-test {
  background: #f7f9fc;
  min-height: calc(100vh - 72px);
  padding-bottom: 40px;
}

body:has(#page-test.active) {
  background: #f7f9fc;
}

#page-test .opc-pc-page {
  padding: 28px 0 56px;
}

#page-test .opc-pc-page__head {
  text-align: center;
  margin-bottom: 8px;
  padding: 0 16px;
}

#page-test .opc-pc-page__head h2 {
  margin: 0 0 8px;
  font-family: Syne, Inter, 'Noto Sans SC', sans-serif;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.02em;
}

#page-test .opc-pc-page__head p {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(71, 85, 105, 0.75);
}

#page-test .opc-pc-page__block {
  margin-top: 28px;
}

#page-test .opc-pc-page__label {
  margin: 0 0 12px;
  padding: 0 8px;
  text-align: center;
  font-family: Syne, Inter, 'Noto Sans SC', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(100, 116, 139, 0.7);
}

@media (max-width: 720px) {
  .opc-pc {
    min-height: auto;
    padding: 16px 8px 28px;
    border-radius: 0;
  }

  .opc-pc__stage {
    width: min(100%, 420px);
  }

  .opc-pc__card {
    border-radius: 22px;
    aspect-ratio: 1.45 / 1;
  }

  .opc-pc__content {
    padding: 16px 18px;
  }

  .opc-pc__desc {
    margin-top: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .opc-pc__badge {
    font-size: 9px;
    padding: 4px 8px;
  }
}

@media (max-width: 420px) {
  .opc-pc__card {
    aspect-ratio: 1.35 / 1;
  }

  .opc-pc__footer-line {
    letter-spacing: 0.12em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .opc-pc__card,
  .opc-pc__shine {
    transition: none !important;
  }

  .opc-pc__card.is-pressed {
    transform: none !important;
  }
}