/* =========================================================
   Edition landing — one reader, many textbooks.
   ========================================================= */

.edition-switch {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 38px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.55);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  transition: 0.18s;
}
.edition-switch:hover { border-color: var(--line-strong); color: var(--forest); background: var(--card); }
.edition-switch svg { width: 13px; height: 13px; opacity: 0.55; }
.es-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 3px rgba(197, 125, 50, 0.12); }

.edition-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(340px, 0.78fr);
  align-items: center;
  gap: clamp(30px, 6vw, 86px);
  min-height: 640px;
  padding: 48px 0 70px;
  overflow: hidden;
}
.edition-hero::before {
  content: "";
  position: absolute;
  right: -10%;
  top: 0;
  width: 640px;
  height: 640px;
  border: 1px solid rgba(23, 59, 50, 0.08);
  border-radius: 50%;
  pointer-events: none;
}
.edition-hero::after {
  content: "";
  position: absolute;
  right: 4%;
  top: 9%;
  width: 470px;
  height: 470px;
  border: 1px dashed rgba(197, 125, 50, 0.16);
  border-radius: 50%;
  pointer-events: none;
}
.edition-copy { position: relative; z-index: 2; }
.edition-copy .eyebrow { margin-bottom: 22px; }
.edition-title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(48px, 6.2vw, 80px);
  font-weight: 500;
  line-height: 1.07;
  letter-spacing: -0.045em;
  color: var(--forest);
}
.edition-title .accent { position: relative; display: inline-block; color: var(--amber-deep); font-style: normal; }
.edition-title .accent::after {
  content: "";
  position: absolute;
  left: 1%;
  right: 0;
  bottom: 3px;
  height: 9px;
  border-radius: 50%;
  background: rgba(197, 125, 50, 0.2);
  transform: rotate(-1.4deg);
}
.edition-lede { max-width: 590px; margin: 24px 0 0; font-size: 15px; line-height: 1.9; color: var(--ink-soft); }
.edition-lede strong { color: var(--ink); font-weight: 600; }
.edition-status { display: flex; align-items: center; gap: 8px; margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); max-width: 560px; font-size: 10.5px; color: var(--ink-faint); }
.edition-status b { color: var(--forest); }
.edition-status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--amber); }

.edition-art { position: relative; min-height: 510px; display: grid; place-items: center; z-index: 1; }
.edition-stack { position: relative; width: 360px; height: 480px; }
.ghost-book {
  position: absolute;
  width: 142px;
  height: 202px;
  padding: 16px 14px;
  border-radius: 4px 10px 10px 4px;
  background: var(--ghost-color);
  color: rgba(255, 253, 248, 0.78);
  box-shadow: 0 18px 34px rgba(23, 59, 50, 0.16);
  opacity: 0.58;
}
.ghost-book::before { content: ""; position: absolute; inset: 7px; border: 1px solid rgba(255, 255, 255, 0.22); border-radius: 3px 7px 7px 3px; }
.ghost-book span { display: block; margin-top: 40px; font-family: var(--serif); font-size: 18px; letter-spacing: 0.04em; }
.ghost-book small { display: block; margin-top: 5px; font-size: 7.5px; letter-spacing: 0.14em; opacity: 0.7; }
.ghost-1 { left: 10px; top: 116px; transform: rotate(-9deg); }
.ghost-2 { right: 2px; top: 66px; transform: rotate(7deg); opacity: 0.48; }
.ghost-3 { left: 70px; bottom: 26px; transform: rotate(-3deg); opacity: 0.4; }
.main-edition-book {
  position: absolute;
  z-index: 3;
  left: 50%;
  top: 8px;
  width: 278px;
  aspect-ratio: 600 / 840;
  transform: translateX(-50%) rotate(2deg);
  border-radius: 4px 12px 12px 4px;
  overflow: hidden;
  box-shadow: -12px 18px 0 rgba(23, 59, 50, 0.12), 0 28px 55px rgba(23, 59, 50, 0.28);
  background: var(--forest);
}
.main-edition-book::after { content: ""; position: absolute; inset: 0; background: linear-gradient(115deg, rgba(255, 255, 255, 0.16), transparent 34%, transparent 80%, rgba(255, 255, 255, 0.04)); pointer-events: none; }
.main-edition-book img { width: 100%; height: 100%; object-fit: cover; }
.main-edition-badge {
  position: absolute;
  z-index: 2;
  right: 12px;
  top: 12px;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--amber-soft);
  color: var(--forest);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.1em;
}
.stack-caption {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: -4px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 9px;
  white-space: nowrap;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.92);
  box-shadow: var(--shadow-sm);
  font-size: 10px;
  color: var(--ink-soft);
}
.stack-caption span { font-family: var(--mono); color: var(--amber-deep); }
.stack-caption b { font-weight: 500; }

.edition-section { margin-bottom: 90px; }
.edition-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.edition-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 328px;
  padding: 20px 19px 17px;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  transition: transform 0.22s, box-shadow 0.22s, border-color 0.22s;
}
.edition-card.is-available {
  background: var(--ed-color);
  color: #f6ecd8;
  border-color: var(--ed-color);
  box-shadow: var(--shadow-md);
}
.edition-card.is-available::after {
  content: "";
  position: absolute;
  right: -36px;
  bottom: -54px;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(246, 236, 216, 0.17);
  border-radius: 50%;
}
.edition-card.is-coming { background: rgba(255, 253, 248, 0.62); color: var(--ink); }
.edition-card.is-coming::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px dashed rgba(30, 42, 36, 0.1);
  border-radius: 12px;
  pointer-events: none;
}
.edition-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.edition-card.is-coming:hover { border-color: rgba(197, 125, 50, 0.4); background: var(--card); }
.edition-card-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; position: relative; z-index: 1; }
.edition-monogram {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 17px;
  background: rgba(255, 255, 255, 0.12);
  color: var(--ed-accent);
}
.is-coming .edition-monogram { background: var(--paper-deep); color: var(--ed-color); }
.edition-status-pill { padding: 4px 8px; border-radius: 999px; font-size: 7.5px; letter-spacing: 0.08em; }
.edition-status-pill.live { background: var(--amber-soft); color: var(--forest); }
.edition-status-pill.soon { background: var(--paper-deep); color: var(--ink-faint); }
.edition-card h3 { position: relative; z-index: 1; margin: 20px 0 3px; font-family: var(--serif); font-size: 25px; font-weight: 500; line-height: 1.1; }
.is-available h3 { color: #f7eedb; }
.edition-en { position: relative; z-index: 1; font-size: 8px; letter-spacing: 0.08em; color: var(--ink-faint); }
.is-available .edition-en { color: rgba(246, 236, 216, 0.6); }
.edition-region { position: relative; z-index: 1; margin-top: 8px; font-size: 9.5px; color: var(--ink-faint); }
.is-available .edition-region { color: rgba(246, 236, 216, 0.55); }
.edition-stats { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; margin-top: auto; padding-top: 16px; }
.edition-stats span { font-size: 8.5px; color: rgba(246, 236, 216, 0.62); }
.edition-stats b { display: block; font-family: var(--serif); font-size: 18px; font-weight: 500; color: #f5e6c8; line-height: 1.1; }
.edition-coming-note { position: relative; z-index: 1; margin-top: auto; padding-top: 16px; font-size: 9.5px; line-height: 1.65; color: var(--ink-faint); }
.edition-card-foot {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(246, 236, 216, 0.16);
  font-size: 10px;
  font-weight: 600;
}
.is-available .edition-card-foot { color: var(--amber-soft); }
.is-coming .edition-card-foot { border-top-color: var(--line); color: var(--ink-faint); }
.edition-card-foot svg { width: 13px; height: 13px; }

.edition-principles { margin-bottom: 90px; }
.edition-principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.edition-principle { padding: 24px 23px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255, 253, 248, 0.55); }
.edition-principle > span { font-family: var(--mono); font-size: 9px; letter-spacing: 0.12em; color: var(--amber-deep); }
.edition-principle h3 { margin: 18px 0 8px; font-family: var(--serif); font-size: 21px; font-weight: 500; }
.edition-principle p { margin: 0; font-size: 11.5px; line-height: 1.8; color: var(--ink-soft); }

.edition-pep-preview { margin-bottom: 30px; }
.pep-preview {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 40px;
  padding: 38px 42px;
  border-radius: var(--radius);
  background: var(--forest);
  color: #f4ead4;
  overflow: hidden;
  position: relative;
}
.pep-preview::after { content: ""; position: absolute; right: -60px; bottom: -130px; width: 400px; height: 400px; border: 1px solid rgba(246, 236, 216, 0.12); border-radius: 50%; }
.pep-preview-copy { position: relative; z-index: 1; }
.pep-preview-copy .eyebrow { color: var(--amber-soft); }
.pep-preview-copy h2 { margin: 12px 0 9px; font-family: var(--serif); font-size: clamp(27px, 3vw, 38px); font-weight: 500; line-height: 1.1; }
.pep-preview-copy p { max-width: 540px; margin: 0 0 20px; font-size: 11.5px; line-height: 1.8; color: #cbd9cf; }
.pep-preview-copy .btn-primary { background: var(--amber-soft); color: var(--forest); box-shadow: none; }
.pep-preview-stats { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.pep-preview-stats div { padding: 14px; border: 1px solid rgba(246, 236, 216, 0.16); border-radius: 12px; text-align: center; }
.pep-preview-stats b { display: block; font-family: var(--serif); font-size: 24px; font-weight: 500; line-height: 1.1; }
.pep-preview-stats span { display: block; margin-top: 3px; font-size: 8.5px; color: #b9c9bf; }

@media (max-width: 1120px) {
  .edition-grid { grid-template-columns: repeat(3, 1fr); }
  .edition-card { min-height: 300px; }
  .edition-stack { width: 310px; height: 440px; }
  .main-edition-book { width: 248px; }
}

@media (max-width: 980px) {
  .edition-hero { grid-template-columns: 1fr; min-height: auto; padding-top: 34px; gap: 20px; }
  .edition-art { min-height: 470px; }
  .edition-grid { grid-template-columns: repeat(2, 1fr); }
  .edition-principle-grid { grid-template-columns: 1fr; }
  .pep-preview { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 760px) {
  .edition-switch { display: none; }
  .edition-hero { padding: 24px 0 46px; }
  .edition-title { font-size: clamp(42px, 12vw, 58px); }
  .edition-lede { font-size: 13.5px; }
  .edition-art { min-height: 420px; }
  .edition-stack { width: 270px; height: 390px; }
  .main-edition-book { width: 220px; top: 4px; }
  .ghost-book { width: 110px; height: 158px; }
  .ghost-1 { left: 0; top: 100px; }
  .ghost-2 { right: -4px; top: 50px; }
  .ghost-3 { left: 52px; bottom: 28px; }
  .stack-caption { bottom: -14px; font-size: 9px; padding: 8px 11px; }
  .edition-grid { grid-template-columns: 1fr; }
  .edition-card { min-height: 260px; }
  .edition-card h3 { font-size: 27px; }
  .edition-section, .edition-principles { margin-bottom: 60px; }
  .pep-preview { padding: 28px 24px; }
  .pep-preview-stats { grid-template-columns: repeat(2, 1fr); }
  .edition-principle { padding: 20px; }
}

@media (max-width: 460px) {
  .edition-title { font-size: 40px; }
  .edition-art { min-height: 370px; }
  .edition-stack { width: 238px; height: 345px; }
  .main-edition-book { width: 192px; }
  .ghost-book { width: 96px; height: 136px; padding: 12px 10px; }
  .ghost-book span { margin-top: 25px; font-size: 14px; }
  .ghost-1 { top: 90px; }
  .ghost-2 { top: 42px; }
  .ghost-3 { bottom: 22px; }
  .edition-stats b { font-size: 16px; }
}