/* Credibility: a two-line heading and progressively enhanced principle cards. */
.proposal-page .proposal-principles--interactive .proposal-principles-heading {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 48px;
}

.proposal-page .proposal-principles--interactive .proposal-principles-heading h2 {
  max-width: 100%;
  margin: 0;
  text-align: left;
  font-size: clamp(2.65rem, 4.7vw, 4.75rem);
  letter-spacing: -.055em;
  line-height: 1.08;
}

.proposal-page .proposal-principles--interactive .proposal-principles-heading h2 > span {
  display: block;
  white-space: nowrap;
}

.proposal-page .proposal-principles--interactive .proposal-principles-heading > p {
  width: auto;
  margin: 10px 0 0;
  text-align: right;
}

.proposal-page .proposal-principles--interactive > ol {
  gap: 16px;
  margin-top: 52px;
  border: 0;
}

.proposal-page .proposal-principles--interactive .proposal-principle {
  display: flex;
  min-width: 0;
  min-height: 0;
  padding: 0;
  border: 0;
  perspective: 1200px;
}

.proposal-principle-inner {
  display: grid;
  width: 100%;
  gap: 12px;
}

.proposal-principle-face {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
  min-height: 370px;
  padding: 26px 24px;
  border: 1px solid #ffffff2b;
  border-radius: 4px;
  background: #081a34;
}

.proposal-page .proposal-principle-front > .proposal-card-icon {
  color: var(--cyan);
}

.proposal-page .proposal-principle-face h3 {
  margin: 0 0 14px;
  font-size: 1.15rem;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.proposal-page .proposal-principle-front h3 {
  margin-top: 48px;
}

.proposal-page .proposal-principle-face p,
.proposal-page .proposal-principle-face ul {
  margin: 0;
  color: #c2d2ea;
  font-size: .84rem;
  line-height: 1.65;
}

.proposal-page .proposal-principle-face ul {
  display: grid;
  gap: 8px;
  margin-top: 16px;
  padding-left: 17px;
  list-style: disc;
}

.proposal-principle-face li::marker {
  color: var(--cyan);
}

.proposal-principle-back {
  border-color: #5cd8ea66;
  background: #0c2948;
}

.proposal-page .proposal-principle-back .proposal-principle-eyebrow {
  margin-bottom: 16px;
  color: var(--cyan);
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.proposal-principle-face > button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  min-height: 44px;
  margin-top: auto;
  padding: 24px 0 0;
  border: 0;
  color: var(--cyan);
  background: transparent;
  font: inherit;
  font-size: .73rem;
  font-weight: 750;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
}

.proposal-principle-face > button[hidden] { display: none; }
.proposal-principle-face > button > span[aria-hidden] { font-size: 1.25rem; }
.proposal-principle-face > button:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 6px;
  border-radius: 2px;
}

.proposal-principles--enhanced .proposal-principle-inner {
  gap: 0;
  transform-style: preserve-3d;
  transition: transform 600ms cubic-bezier(.2, .65, .25, 1);
}

.proposal-principles--enhanced .proposal-principle-face {
  grid-area: 1 / 1;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.proposal-principles--enhanced .proposal-principle-front { transform: rotateY(0deg); }
.proposal-principles--enhanced .proposal-principle-back { transform: rotateY(180deg); }
.proposal-principles--enhanced .is-flipped .proposal-principle-inner { transform: rotateY(180deg); }
.proposal-principles--enhanced .proposal-principle-face[aria-hidden="true"] { pointer-events: none; }

/* Reduced-motion and eco preferences replace the rotation with an instant change. */
.proposal-principles--enhanced.is-reduced-motion .proposal-principle-inner,
.proposal-principles--enhanced.is-reduced-motion .proposal-principle-face {
  transform: none;
  transition: none;
}
.proposal-principles--enhanced.is-reduced-motion .proposal-principle-face[aria-hidden="true"] {
  visibility: hidden;
}

@media (width <= 1100px) {
  .proposal-page .proposal-principles--interactive > ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (width <= 900px) {
  .proposal-page .proposal-principles--interactive .proposal-principles-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .proposal-page .proposal-principles--interactive .proposal-principles-heading > p {
    margin-top: 0;
    justify-self: end;
  }
}

@media (width <= 680px) {
  .proposal-page .proposal-principles--interactive .proposal-principles-heading h2 {
    font-size: clamp(1.4rem, 7.1vw, 3rem);
  }
  .proposal-page .proposal-principles--interactive > ol {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 36px;
  }
  .proposal-principle-face { min-height: 340px; }
}

@media (prefers-reduced-motion: reduce) {
  .proposal-principles--enhanced .proposal-principle-inner,
  .proposal-principles--enhanced .proposal-principle-face { transform: none; transition: none; }
  .proposal-principles--enhanced .proposal-principle-face[aria-hidden="true"] { visibility: hidden; }
}

@media print {
  .proposal-page .proposal-principles--interactive > ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .proposal-principles--enhanced .proposal-principle-inner { display: block; transform: none; }
  .proposal-principles--enhanced .proposal-principle-face {
    min-height: 0;
    transform: none;
    visibility: visible !important;
    color: #061228;
    background: white;
    break-inside: avoid;
  }
  .proposal-page .proposal-principle-face p,
  .proposal-page .proposal-principle-face ul { color: #253750; }
  .proposal-principle-face > button { display: none; }
}