@keyframes bureau-sheet-in { from { opacity: 0; transform: translateY(28px) rotate(3deg); } }

/* Formats: three tabs on the left, one deep green panel with a paper
   illustration on the right. Without JavaScript the panels simply stack. */
.bureau-formats {
  background: var(--color-white);
}
.bureau-formats__panels {
  display: grid;
  gap: 24px;
}
.bureau-formats__picker.is-ready {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: stretch;
}
/* Left column: tabs at the top, the "not sure yet" note at the bottom. */
.bureau-formats__aside {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 40px;
}
.bureau-formats__picker:not(.is-ready) .bureau-formats__aside {
  margin-bottom: 32px;
}
.bureau-formats__tabs {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-line-strong);
}
.bureau-format-tab {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  width: 100%;
  padding: 28px 0;
  border: 0;
  border-bottom: 1px solid var(--color-line-strong);
  background: none;
  color: var(--color-muted);
  text-align: left;
  cursor: pointer;
  transition: color 300ms;
}
.bureau-format-tab::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 600ms var(--ease-out);
}
.bureau-format-tab:hover,
.bureau-format-tab[aria-selected="true"] {
  color: var(--color-ink);
}
.bureau-format-tab[aria-selected="true"]::before {
  transform: scaleX(1);
}
.bureau-format-tab__number {
  color: var(--color-accent-soft);
  font: 500 22px/1 var(--font-heading);
  transition: color 300ms;
}
.bureau-format-tab[aria-selected="true"] .bureau-format-tab__number {
  color: var(--color-accent-text);
}
.bureau-format-tab__text small {
  display: block;
  margin-bottom: 8px;
  color: var(--color-accent-text);
  font: 500 10px/1.4 var(--font-ui);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.bureau-format-tab__text strong {
  display: block;
  font: 500 clamp(24px, 2.3vw, 34px)/1.15 var(--font-heading);
}
.bureau-format-tab__arrow {
  color: var(--color-accent);
  font-size: 22px;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 300ms, transform 400ms var(--ease-out);
}
.bureau-format-tab[aria-selected="true"] .bureau-format-tab__arrow {
  opacity: 1;
  transform: none;
}
.bureau-format-tab:focus-visible {
  outline-offset: -2px;
}
.bureau-format-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
  overflow: hidden;
  padding: clamp(32px, 4vw, 56px);
  border-radius: var(--radius-lg);
  background: var(--color-primary-deep);
  color: var(--color-white);
}
.bureau-format-panel :focus-visible {
  outline-color: var(--color-accent-soft);
}
.bureau-format-panel__label {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--color-accent-soft);
  font: 500 11px/1.4 var(--font-ui);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.bureau-format-panel__label > span {
  font: 500 15px/1 var(--font-heading);
  letter-spacing: 0;
}
.bureau-format-panel h3 {
  margin-block: 18px 16px;
  font: 500 clamp(30px, 3vw, 44px)/1.08 var(--font-heading);
  text-wrap: balance;
}
.bureau-format-panel p {
  max-width: 44ch;
  color: var(--color-on-ink);
  font-size: 16px;
  line-height: 1.7;
}
.bureau-format-panel ul {
  list-style: none;
  margin-block: 28px 32px;
  border-top: 1px solid var(--color-line-on-ink);
}
.bureau-format-panel li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-block: 12px;
  border-bottom: 1px solid var(--color-line-on-ink);
  font-size: 15px;
}
.bureau-format-panel li svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-accent-soft);
}
.bureau-format-panel .text-link {
  color: var(--color-white);
  font-size: 14px;
}
/* Paper illustrations: one sheet, a sheet with a seal, a stack of three. */
.bureau-format-visual {
  display: grid;
  place-items: center;
  min-height: 340px;
}
.bureau-sheet {
  position: relative;
  grid-area: 1 / 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: min(230px, 100%);
  aspect-ratio: 1 / 1.38;
  padding: 24px 22px;
  border-radius: 3px;
  background: var(--color-sheet);
  box-shadow: 0 32px 60px -24px #00000080;
  color: var(--color-ink);
}
.bureau-sheet b {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
  font: 600 10px/1.4 var(--font-ui);
  letter-spacing: .14em;
  text-transform: uppercase;
}
.bureau-sheet__lines {
  display: grid;
  gap: 9px;
}
.bureau-sheet__lines i {
  height: 5px;
  border-radius: 1px;
  background: var(--color-line);
}
.bureau-sheet__lines i:nth-child(2) {
  width: 92%;
}
.bureau-sheet__lines i:nth-child(4) {
  width: 68%;
}
.bureau-sheet__lines i:nth-child(5) {
  width: 84%;
}
.bureau-sheet__tag {
  position: absolute;
  top: 24px;
  right: 22px;
  color: var(--color-accent-text);
  font: 600 10px/1.4 var(--font-ui);
  letter-spacing: .1em;
}
.bureau-sheet__seal {
  position: absolute;
  right: 20px;
  bottom: 24px;
  display: grid;
  place-items: center;
  width: 70px;
  height: 70px;
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  box-shadow: inset 0 0 0 4px var(--color-sheet), inset 0 0 0 5px var(--color-accent-soft);
  color: var(--color-accent);
  font: 500 24px/1 var(--font-heading);
  transform: rotate(-12deg);
}
.bureau-sheet__sign {
  position: absolute;
  left: 22px;
  bottom: 44px;
  width: 86px;
  height: 1px;
  background: var(--color-line-strong);
}
.bureau-format-visual--written .bureau-sheet {
  transform: rotate(2deg);
}
.bureau-sheet--back {
  background: var(--color-sheet-deep);
  transform: translate(-34px, -26px) rotate(-7deg);
}
.bureau-sheet--middle {
  background: var(--color-sheet-back);
  transform: translate(-17px, -13px) rotate(-3.5deg);
}
.bureau-formats__note {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}
.bureau-formats__note > span {
  display: none;
}
.bureau-formats__note p {
  max-width: 40ch;
  font-size: 15px;
  color: var(--color-muted);
}
.bureau-formats__note .button {
  flex-shrink: 0;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.bureau-formats__note .button:hover {
  background: var(--color-section-slate);
}
@media (max-width: 1199px) {
  .bureau-formats__note p {
    max-width: 46ch;
  }
}
@media (max-width: 1023px) {
  .bureau-formats__picker.is-ready {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }
  .bureau-formats__picker.is-ready .bureau-formats__aside {
    display: contents;
  }
  .bureau-formats__picker.is-ready .bureau-formats__note {
    order: 1;
  }
}
@media (max-width: 767px) {
  .bureau-format-tab {
    padding-block: 20px;
    gap: 14px;
  }
  .bureau-format-panel {
    grid-template-columns: minmax(0, 1fr);
    padding: 28px 24px;
  }
  .bureau-format-visual {
    min-height: 260px;
    order: -1;
  }
  .bureau-sheet {
    width: 180px;
  }
  .bureau-sheet__seal {
    width: 58px;
    height: 58px;
    font-size: 20px;
  }
  .bureau-formats__note {
    align-items: start;
    gap: 20px;
  }
  .bureau-formats__note .button {
    width: 100%;
  }
}
@media (prefers-reduced-motion: no-preference) {
  .bureau-format-panel.is-entering .bureau-format-panel__copy > * {
    animation: rise 700ms var(--ease-out) both;
  }
  .bureau-format-panel.is-entering .bureau-format-panel__copy > :nth-child(2) {
    animation-delay: 60ms;
  }
  .bureau-format-panel.is-entering .bureau-format-panel__copy > :nth-child(3) {
    animation-delay: 120ms;
  }
  .bureau-format-panel.is-entering .bureau-format-panel__copy > :nth-child(4) {
    animation-delay: 180ms;
  }
  .bureau-format-panel.is-entering .bureau-format-panel__copy > :nth-child(5) {
    animation-delay: 240ms;
  }
  .bureau-format-panel.is-entering .bureau-format-visual {
    animation: bureau-sheet-in 900ms var(--ease-out) both;
  }
}