/* 5ft.mag 웹진 — 분류(시즌)별 한 줄(코버플로우). 책 한 권이 옆으로 회전해 책등↔표지로
   돌고(단일 큐보이드), 고르면 그 줄 안에서 표지로 돌아서며 슬롯이 늘어나 이웃을 밀어내고
   옆에 정보가 뜬다. 스와이프하면 역회전으로 다시 책등으로 접힌다. 다크 톤 고정. 오리지널. */
#themeBtn { display: none; }
html {
  --wz-mark: url("../img/symbol-w.svg");
  --paper: url("../img/textures/paper-gray.webp");
  --wz-grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='150' height='150'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");
  --wz-bg: radial-gradient(120% 70% at 50% 0%, #211c25 0%, #151219 48%, #100e13 100%) fixed;
  --wz-ease: cubic-bezier(.22, .61, .27, 1);
}
/* 헤더·본문·푸터를 하나의 갤러리 배경으로 연결(고정 배경이라 seam 없음) */
body { background: var(--wz-bg); color: #fff; overflow-x: hidden; }

/* 페이지 진입 veil: 밝은 화면에서 다크로 스르륵 들어오게 한다.
   색은 직전 페이지(사이트 테마)에 맞춰 head 스크립트가 정한다(기본 흰색). */
.wz-veil { position: fixed; inset: 0; z-index: 2000; background: var(--wz-veil-bg, #fff); opacity: 0; pointer-events: none; }
.wz-veil.enter { animation: wzVeilOut .55s var(--wz-ease) both; }
@keyframes wzVeilOut { from { opacity: 1; } to { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .wz-veil { display: none; } }
header { background: var(--wz-bg); border-bottom-color: transparent; }
footer { background: var(--wz-bg); border-top-color: transparent; color: rgba(255, 255, 255, .8); }
.wz-stage { min-height: calc(100vh - var(--header-h, 72px)); background: none; color: #fff; display: flex; flex-direction: column; }

/* 공통 정육면체 */
.wz-cuboid > * , .wz-book3d > * { position: absolute; inset: 0; margin: auto; backface-visibility: hidden; overflow: hidden; }
.wz-pages { background: repeating-linear-gradient(var(--pg-dir, to bottom), #efe9dd, #efe9dd 1px, #d3c9b5 2px, #efe9dd 3px); }

.wz-intro { padding: 68px 40px 8px; text-align: center; }
.wz-intro-inner { max-width: 660px; margin: 0 auto; }
.wz-kicker { display: block; font-size: 12px; font-weight: var(--fw-heading); letter-spacing: 0.24em; text-transform: uppercase; color: rgba(255, 255, 255, .42); margin-bottom: 16px; }
.wz-page-title { font-size: clamp(40px, 6vw, 66px); font-weight: var(--fw-heading); letter-spacing: -0.03em; line-height: 1; margin: 0 0 20px; color: #fff; }
.wz-lede { font-size: clamp(16px, 1.5vw, 19px); line-height: 1.6; color: rgba(255, 255, 255, .82); margin: 0 0 12px; }
.wz-howto { font-size: 14px; line-height: 1.65; color: rgba(255, 255, 255, .48); margin: 0; }
.wz-empty { text-align: center; color: rgba(255, 255, 255, .5); padding: 80px 24px; }

/* ── 시즌(분류)별 책장 ── */
.wz-seasons { padding: 8px max(20px, 4vw) 80px; overflow-x: clip; }
/* 박스로 가두지 않고, 위에서 내리는 조명 + 책이 올라선 선반으로 "열린 책장"을 만든다 */
.wz-shelf { position: relative; max-width: 1180px; margin: 0 auto; padding: 22px 0 58px; }
.wz-shelf + .wz-shelf { margin-top: 12px; }
/* 조명 풀: 책을 비추고 좌우로 자연스럽게 어두워져 빈 공간을 갤러리 조명처럼 보이게 한다 */
.wz-shelf::before {
  content: ""; position: absolute; left: 0; right: 0; top: 4px; bottom: 32px; z-index: 0;
  background: radial-gradient(68% 84% at 50% 4%, rgba(255, 255, 255, .085), rgba(255, 255, 255, 0) 66%);
  pointer-events: none;
}
.wz-shelf-title {
  position: relative; z-index: 2; text-align: center;
  font-size: clamp(15px, 1.5vw, 20px); font-weight: var(--fw-heading);
  letter-spacing: 0.02em; color: rgba(255, 255, 255, .82); margin: 0;
}
.wz-flow { position: relative; overflow: visible; }
/* 선반 널빤지: 책 밑동 라인에 얇은 보드, 좌우 끝은 페이드 → 갇히지 않은 열린 선반 */
.wz-flow::before {
  content: ""; position: absolute; left: 0; right: 0; bottom: 50px; height: 2px; z-index: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .16) 22%, rgba(255, 255, 255, .16) 78%, transparent);
  pointer-events: none;
}
/* 선반 위 접지 그림자: 책이 보드에 닿은 느낌(떠 보이지 않게) */
.wz-flow::after {
  content: ""; position: absolute; left: 12%; right: 12%; bottom: 26px; height: 26px; z-index: 0;
  background: radial-gradient(54% 130% at 50% 0%, rgba(0, 0, 0, .5), rgba(0, 0, 0, 0) 74%);
  pointer-events: none;
}
.wz-track { display: flex; align-items: center; gap: clamp(14px, 2.6vw, 34px); padding: 40px 0 52px; will-change: transform; transition: transform .55s var(--wz-ease); position: relative; z-index: 1; user-select: none; }
.wz-flow.no-anim .wz-track, .wz-flow.no-anim .wz-slot, .wz-flow.no-anim .wz-book3d { transition: none !important; }
.wz-flow.following .wz-track { transition: none; }
.wz-flow.following .wz-slot { filter: none; }   /* 움직이는 동안 그림자 재래스터 방지 → 부드럽게 */

/* 슬롯: 닫힘=책등폭, 열림=표지+정보폭. 폭이 전환되며 이웃을 부드럽게 밀어낸다 */
.wz-slot {
  --st: clamp(30px, 3.2vw, 42px); --cw2: calc(var(--h) * 0.72); --h: min(360px, calc(100vh - 290px));
  --infow: min(40vw, 320px); --infogap: clamp(20px, 3vw, 44px);
  position: relative; flex: 0 0 auto; width: var(--st); height: var(--h);
  transition: width .6s var(--wz-ease), opacity .45s;
  filter: drop-shadow(2px 22px 18px rgba(0, 0, 0, .5));
}
.wz-slot.is-open { width: calc(var(--cw2) + var(--infogap) + var(--infow)); }

/* 책(단일 큐보이드) — 책등(-X) / 표지(+Z) / 책배(+X) / 윗면 */
.wz-book-btn { position: absolute; inset: 0; background: none; border: none; padding: 0; margin: 0; cursor: pointer; perspective: 1500px; }
.wz-book-btn:focus-visible { outline: none; }
.wz-book3d {
  --bx: calc((var(--st) - var(--cw2)) / 2); --by: 90deg; --bs: .9;
  position: absolute; top: 0; left: 0; width: var(--cw2); height: var(--h);
  transform-style: preserve-3d; transform: translateX(var(--bx)) rotateY(var(--by)) scale(var(--bs));
  transition: transform .6s var(--wz-ease); will-change: transform;
}
.wz-slot.is-center .wz-book3d { --bs: 1; }
.wz-slot.is-open .wz-book3d { --bx: 0; --by: -8deg; --bs: 1; }

.wz-book3d .f-front { width: var(--cw2); height: var(--h); transform: translateZ(calc(var(--st) / 2)); background: var(--spine); }
.wz-book3d .f-front img { width: 100%; height: 100%; object-fit: cover; display: block; -webkit-user-drag: none; user-drag: none; }
.wz-book3d .f-front::after { content: ""; position: absolute; inset: 0; background: var(--paper) center / cover; mix-blend-mode: multiply; opacity: .22; pointer-events: none; }
.wz-book3d .f-front .wz-f-text { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; padding: 14px; color: #fff; font-weight: var(--fw-heading); text-align: center; }
.wz-book3d .f-spine {
  width: var(--st); height: var(--h); transform: rotateY(-90deg) translateZ(calc(var(--cw2) / 2));
  background-image: var(--paper), var(--wz-grain), linear-gradient(100deg, rgba(255, 255, 255, .16), rgba(255, 255, 255, 0) 26%, rgba(0, 0, 0, .12) 92%);
  background-color: var(--spine); background-size: cover, 150px 150px, auto; background-blend-mode: soft-light, soft-light, normal;
  color: var(--spine-text); box-shadow: inset -10px 0 20px -10px rgba(0, 0, 0, .6), inset 7px 0 12px -8px rgba(255, 255, 255, .3);
  display: flex; flex-direction: column; align-items: center; justify-content: space-between; gap: 14px; padding: 24px 0 20px;
}
.wz-book3d .f-edge { width: var(--st); height: var(--h); transform: rotateY(90deg) translateZ(calc(var(--cw2) / 2)); --pg-dir: to bottom; }
.wz-book3d .f-top { width: var(--cw2); height: var(--st); transform: rotateX(90deg) translateZ(calc(var(--h) / 2)); --pg-dir: to right; }
.wz-spine-head { display: flex; flex-direction: column; align-items: center; gap: 12px; min-height: 0; }
.wz-spine-title { writing-mode: vertical-rl; text-orientation: mixed; font-size: clamp(13px, 1.05vw, 17px); font-weight: var(--fw-heading); letter-spacing: 0.01em; white-space: nowrap; max-height: calc(var(--h) - 96px); overflow: hidden; }
.wz-spine-title-in { display: block; }
.wz-spine-title.is-scroll .wz-spine-title-in { animation: wz-marq var(--marq-dur, 7s) ease-in-out infinite alternate; }
@keyframes wz-marq { to { transform: translateY(calc(-1 * var(--scroll, 0px))); } }
.wz-spine-issue { writing-mode: vertical-rl; font-size: 11px; letter-spacing: 0.16em; opacity: .58; }
.wz-spine-mark { flex: 0 0 auto; width: clamp(14px, 1.7vw, 20px); height: clamp(14px, 1.7vw, 20px); background: var(--spine-text); opacity: .82; -webkit-mask: var(--wz-mark) center / contain no-repeat; mask: var(--wz-mark) center / contain no-repeat; }

/* 펼침 정보(표지 옆) */
.wz-info {
  position: absolute; top: 0; left: calc(var(--cw2) + var(--infogap)); width: var(--infow); height: var(--h);
  display: flex; flex-direction: column; justify-content: center; color: #fff;
  opacity: 0; pointer-events: none; transform: translateX(-12px); transition: opacity .4s, transform .4s;
}
.wz-slot.is-open .wz-info { opacity: 1; pointer-events: auto; transform: none; transition-delay: .18s; }
.wz-meta-issue { display: block; font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; opacity: .7; margin-bottom: 10px; }
.wz-meta-title { font-size: var(--fs-display); font-weight: var(--fw-heading); letter-spacing: -0.02em; line-height: 1.12; margin: 0; }
.wz-meta-desc { font-size: 15px; line-height: 1.7; opacity: .82; margin: 14px 0 22px; word-break: keep-all; white-space: pre-line; max-height: 9em; overflow: hidden; }
.wz-meta-read { display: inline-flex; align-items: center; gap: var(--space-2); margin-top: 22px; padding: 12px 24px; border-radius: var(--btn-radius); background: #fff; color: #111; font-size: 14px; font-weight: var(--fw-heading); letter-spacing: 0.02em; text-decoration: none; transition: opacity .15s; }
.wz-meta-desc + .wz-meta-read { margin-top: 0; }
.wz-meta-read:hover { opacity: .85; }
.wz-open-actions { display: flex; gap: 10px; margin-top: 14px; }
.wz-act { display: inline-flex; align-items: center; gap: 6px; padding: 9px 14px; border-radius: var(--btn-radius); border: 1px solid rgba(255, 255, 255, .28); background: rgba(255, 255, 255, .06); color: #fff; font-size: 13px; font-weight: var(--fw-heading); cursor: pointer; transition: background .15s, border-color .15s, color .15s; }
.wz-act:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .55); }
.wz-act.is-on { background: #fff; color: #111; border-color: #fff; }
.wz-close { position: absolute; top: -4px; right: 0; width: 30px; height: 30px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .25); background: rgba(20, 16, 22, .55); color: #fff; font-size: 14px; line-height: 1; cursor: pointer; }
.wz-close:hover { background: rgba(40, 32, 44, .85); border-color: rgba(255, 255, 255, .5); }

.wz-nav {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 4;
  width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .22); background: rgba(20, 16, 22, .55); color: #fff;
  font-size: 19px; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background .15s, border-color .15s, opacity .15s; backdrop-filter: blur(4px);
}
.wz-nav:hover { background: rgba(40, 32, 44, .8); border-color: rgba(255, 255, 255, .5); }
.wz-nav:disabled { opacity: .2; cursor: default; }
.wz-prev { left: 8px; }
.wz-next { right: 8px; }

@media (prefers-reduced-motion: reduce) {
  .wz-track, .wz-slot, .wz-book3d, .wz-info { transition: none; }
  .wz-spine-title.is-scroll .wz-spine-title-in { animation: none; }
}

/* ── 책 읽기(flipbook 리더) ── */
.wz-reader { position: fixed; inset: 0; z-index: 1300; background: #0b0a0d; display: flex; flex-direction: column; }
.wz-reader-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 18px; border-bottom: 1px solid rgba(255, 255, 255, .08); color: #fff; }
.wz-reader-title { font-size: 14px; font-weight: var(--fw-heading); opacity: .85; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wz-reader-tools { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.wz-reader-pageno { font-size: 12px; opacity: .7; min-width: 64px; text-align: center; font-variant-numeric: tabular-nums; }
.wz-reader-btn { width: 38px; height: 38px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .22); background: rgba(255, 255, 255, .06); color: #fff; font-size: 18px; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background .15s, border-color .15s; }
.wz-reader-btn:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .5); }
.wz-reader-stage { position: relative; flex: 1 1 auto; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: 16px; touch-action: none; }
.wz-reader-loading, .wz-reader-error { position: absolute; color: rgba(255, 255, 255, .72); font-size: 14px; text-align: center; }
.wz-reader-error a { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
.wz-reader-zoom { transform-origin: center center; will-change: transform; }
.wz-reader.is-zoomed .wz-reader-stage { cursor: grab; }
.wz-reader-book { filter: drop-shadow(0 30px 60px rgba(0, 0, 0, .6)); }
.wz-reader-book .wz-page { background: #fff; overflow: hidden; }
.wz-reader-book .wz-page canvas { width: 100%; height: 100%; display: block; }

@media (max-width: 760px) {
  .wz-intro { padding: 28px 20px 0; }
  .wz-howto br { display: none; }   /* 좁은 화면에선 강제 줄바꿈 없이 자연 흐름 */
  .wz-nav { display: none; }
  .wz-track { gap: clamp(14px, 4vw, 30px); padding: 40px 0 48px; }
  .wz-slot { --st: clamp(26px, 8vw, 40px); --cw2: calc(var(--h) * 0.72); --h: min(300px, calc(100vh - 230px)); --infow: 46vw; --infogap: clamp(14px, 4vw, 24px); }
  .wz-spine-title { font-size: clamp(11px, 2.8vw, 14px); }
  .wz-meta-title { font-size: 22px; }
  .wz-meta-desc { max-height: 7em; }
  /* 좁은 화면: 표지 옆이 아니라 표지 아래로 정보를 쌓는다(가로로 안 넘치게). */
  .wz-slot.is-open { width: var(--cw2); }
  .wz-info { left: 50%; width: 86vw; top: calc(var(--h) + 14px); height: auto; transform: translateX(-50%); justify-content: flex-start; }
  .wz-slot.is-open .wz-info { transform: translateX(-50%); }
  .wz-shelf:has(.wz-slot.is-open) { padding-bottom: 300px; }
}
@media (max-width: 600px) {
  .wz-reader-title { display: none; }
  .wz-reader-bar { padding: 10px 12px; }
  .wz-reader-tools { gap: 6px; }
  .wz-reader-btn { width: 34px; height: 34px; font-size: 17px; }
  .wz-reader-pageno { min-width: 50px; }
}