.passport-section {
  --paper-light: #fbf2de;
  --paper-shadow: #deceb0;
  --paper-ink: #18283b;
  position: relative;
  isolation: isolate;
  overflow: clip;
  color: var(--cream);
  background: #202f46;
  scroll-margin-top: var(--site-nav-offset, 80px);
}

.passport-section::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 45%, #213650 0, #131f33 45%, transparent 75%),
    #091324;
  content: "";
  opacity: .14;
  transition: opacity 1000ms ease-out;
}

.passport-section.passport-entered::before { opacity: 1; }

.passport-shell {
  max-width: 1160px;
  padding: clamp(3.1rem, 6vw, 6rem) var(--gutter) clamp(3.6rem, 6vw, 6rem);
  margin-inline: auto;
  text-align: center;
}

.passport-shell > h2 {
  margin: 0 0 clamp(1.9rem, 4.6vw, 4.4rem);
  color: var(--cream);
  font: 400 clamp(3rem, 6vw, 5.5rem)/.95 var(--display);
  letter-spacing: -.025em;
}

.passport-book {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1fr);
  width: min(100%, 820px);
  margin-inline: auto;
  perspective: 1500px;
  text-align: start;
  transform: translateX(-25.5%) rotate(-4deg);
  transition: transform 1050ms cubic-bezier(.22, .75, .23, 1);
}

.passport-book.passport-open { transform: none; }

.passport-left,
.passport-paper,
.passport-cover-back,
.passport-leaf-back {
  background-color: var(--paper-light);
  color: var(--paper-ink);
}

.passport-left {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.1rem;
  padding: clamp(1.3rem, 4vw, 3rem);
  overflow: hidden;
  border: 1px solid #b5a07e;
  border-radius: 13px 3px 3px 13px;
  background:
    repeating-radial-gradient(ellipse at 78% 112%, transparent 0 5px, #88634614 6px 7px, transparent 8px 11px),
    linear-gradient(95deg, #f7e9ce, #f9edd6 78%, #d6c6a7);
  box-shadow:
    -4px 5px 0 1px #0e2239,
    3px 11px 0 3px #0a182c,
    -11px 25px 46px #0007;
  opacity: 0;
  transition: opacity 510ms ease 280ms;
}

.passport-open .passport-left { opacity: 1; }

.passport-index-label {
  color: #62533d;
  font-size: .73rem;
  font-weight: 750;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.passport-index {
  display: grid;
  gap: .15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.passport-index button {
  display: flex;
  align-items: center;
  gap: .7rem;
  width: 100%;
  min-height: 48px;
  padding: .45rem .4rem;
  border: 0;
  border-top: 1px solid #6b563c32;
  background: transparent;
  color: #304054;
  font: 500 clamp(1.15rem, 2.25vw, 1.65rem)/1.1 var(--display);
  text-align: start;
}

.passport-index button > span {
  min-width: 1.3rem;
  color: #705836;
  font: 650 .69rem/1 system-ui, sans-serif;
  text-align: center;
}

.passport-index button[aria-current="page"] { background: #7b5d3021; color: #12263b; }
.passport-index button:hover { background: #7b5d3029; }
.passport-index button:focus-visible,
.passport-actions :is(a, button):focus-visible { outline: 2px solid #5b4b37; outline-offset: 2px; }

.passport-right {
  position: relative;
  transform-style: preserve-3d;
}

.passport-right::before {
  position: absolute;
  inset: 2px -5px -8px 0;
  border-radius: 3px 15px 15px 3px;
  box-shadow:
    1px 4px 0 2px #192e49,
    0 13px 0 0 #0a192e,
    11px 29px 47px #0008;
  background: repeating-linear-gradient(to bottom, #d7c7a5 0 1px, #f0e3cb 1px 3px);
  content: "";
}

.passport-paper {
  position: relative;
  display: flex;
  min-height: clamp(390px, 39vw, 455px);
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid #b7a282;
  border-radius: 3px 13px 13px 3px;
  background:
    repeating-radial-gradient(ellipse at 97% 5%, transparent 0 9px, #9c6c4620 10px, transparent 11px 14px),
    linear-gradient(100deg, var(--paper-shadow) 0%, var(--paper-light) 8%, #f8eed9 85%, #eee1c9);
}

.passport-paper-number {
  position: absolute;
  inset: 1.15rem 1.35rem auto auto;
  color: #766243;
  font-size: .7rem;
  letter-spacing: .14em;
}

.passport-paper h3 {
  margin: 0;
  font: 400 clamp(2.15rem, 3.45vw, 3.45rem)/.98 var(--display);
  letter-spacing: -.017em;
}

.passport-page-copy {
  max-width: 38ch;
  margin: 0;
  color: #354055;
  font-size: .93rem;
  line-height: 1.58;
}

.passport-actions {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: .45rem;
  margin-top: .15rem;
}

.passport-actions :is(a, button) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  min-height: 43px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 690;
  line-height: 1.25;
  text-align: center;
}

.passport-actions .passport-conditions {
  padding-inline: .95rem;
  background: #21354d;
  color: #fffbf3;
  text-decoration: none;
}

.passport-actions .passport-conditions:hover { background: #304d70; }
.passport-actions .passport-inquiry { padding-inline: .95rem; border-color: #756650; background: transparent; color: #20354d; }
.passport-actions .passport-inquiry:hover { background: #e7dcc3; }

.passport-cover,
.passport-leaf {
  position: absolute;
  z-index: 2;
  inset: 0;
  border-radius: 3px 13px 13px 3px;
  pointer-events: none;
  transform-origin: 0 50%;
  transform-style: preserve-3d;
}

.passport-cover {
  transform: translateZ(2px);
  transition:
    transform 1050ms cubic-bezier(.18, .74, .25, 1),
    opacity 170ms linear 880ms;
}

.passport-open .passport-cover {
  opacity: 0;
  transform: rotateY(-175deg) rotateX(3deg);
}

.passport-cover-front,
.passport-cover-back,
.passport-leaf > *,
.passport-leaf-back {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  backface-visibility: hidden;
}

.passport-cover-front {
  border: 1px solid #73839880;
  background:
    linear-gradient(96deg, #060c2060, transparent 14% 90%, #05142746),
    url("./media/passport-cover.webp") center / 100% 100% no-repeat,
    #152741;
  box-shadow: 6px 14px 35px #0005;
}

.passport-cover-back,
.passport-leaf-back {
  background:
    repeating-radial-gradient(ellipse at 15% 6%, transparent 0 9px, #a3865423 10px, transparent 11px 14px),
    linear-gradient(90deg, #e5d5b7, #faeed6 26% 84%, #d5bc8f);
  transform: rotateY(180deg);
}

.passport-leaf { z-index: 3; }
.passport-leaf > .passport-paper { box-shadow: inset -10px 0 23px #735b322c; }
.passport-leaf > .passport-paper::after {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, transparent 77%, #fdfbdf62 92%, #765e3663);
  content: "";
}

.passport-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(.4rem, 2.3vw, 1.7rem);
  width: min(100%, 650px);
  margin: clamp(1.8rem, 4vw, 3rem) auto 0;
}

.passport-controls button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 45px;
  padding: .43rem clamp(.55rem, 1.7vw, 1.2rem);
  border: 1px solid #e1c69b67;
  border-radius: 999px;
  background: #121e2eaf;
  color: var(--cream);
  font-size: clamp(.74rem, 1.55vw, .88rem);
  line-height: 1.2;
}

.passport-controls button:first-child { justify-self: end; }
.passport-controls button:last-child { justify-self: start; }
.passport-controls button:hover:not([aria-disabled="true"]) { border-color: var(--champagne); background: #24364c; }
.passport-controls button[aria-disabled="true"] { cursor: default; opacity: .53; }
.passport-controls button > span { color: var(--champagne); }
.passport-progress { color: var(--champagne); font-size: .75rem; white-space: nowrap; }

.passport-wizard {
  display: inline-flex;
  gap: .45em;
  margin-top: 1.2rem;
  color: #e8d1aa;
  font-size: .76rem;
  text-underline-offset: .28em;
}
.passport-wizard:hover { color: var(--cream); }

@media (max-width: 690px) {
  .passport-book { display: block; width: min(100%, 385px); transform: rotate(-4deg); }
  .passport-left { display: none; }
  .passport-paper { min-height: 400px; padding: 2.3rem clamp(1.35rem, 6vw, 2.4rem) 1.6rem; border-radius: 5px 12px 12px 5px; }
  .passport-paper h3 { font-size: clamp(2.1rem, 8.5vw, 3.2rem); }
  .passport-controls { width: min(100%, 440px); }
}

@media (max-width: 350px) {
  .passport-controls button { gap: .3rem; }
  .passport-progress { font-size: .67rem; }
}

@media (prefers-reduced-motion: reduce) {
  .passport-section::before, .passport-book, .passport-left, .passport-cover { transition: none; }
  .passport-section::before, .passport-left { opacity: 1; }
  .passport-book { transform: none; }
  .passport-cover { display: none; }
}