/* 스케치 다이어리 — 검은 대지의 사진첩
   style.css 위에 얹는다. 표지는 쪽빛 천에 금박 寫生帖, 속지는 검은 대지에 사진 모서리 종이 */

:root {   /* diary.css는 다이어리 쪽에서만 불러온다 */
  --leaf:    #111722;   /* 속지: 검은 대지 */
  --leaf-2:  #171e2b;
  --corner:  #cfc7b4;   /* 사진 모서리 종이 */
  --cloth:   #1a2436;   /* 표지 천 */
}

/* 좁은 화면에서도 지금 있는 메뉴는 보이게 */
.bar__nav a[aria-current="page"] { color: var(--kinu); }
@media (max-width: 820px) {
  .bar__nav a[aria-current="page"] { display: inline; }
}

.diary { min-height: 100svh; }
/* 장을 넘긴 뒤 제목으로 옮긴 초점은 읽기 프로그램용이라 테두리를 그리지 않는다 */
.dv h1[tabindex="-1"]:focus { outline: none; }

/* ---------- 속지 ---------- */
.dv {
  min-height: 100svh;
  padding: 104px var(--gutter) 12vh;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(230,226,216,.035), transparent 60%),
    var(--ai);
}
.album, .entry {
  position: relative;
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 72px) clamp(20px, 5vw, 80px) clamp(40px, 6vw, 88px);
  background:
    linear-gradient(90deg, rgba(0,0,0,.35), rgba(0,0,0,0) 3.5%),   /* 묶음 쪽의 그늘 */
    var(--leaf);
  box-shadow: 0 30px 80px rgba(0,0,0,.45), inset 0 0 0 1px rgba(230,226,216,.04);
}
/* 대지의 섬유 결 */
.album::before, .entry::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='f'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.012 .6' numOctaves='2' seed='4'/%3E%3CfeColorMatrix values='0 0 0 0 .9 0 0 0 0 .88 0 0 0 0 .84 0 0 0 .05 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23f)'/%3E%3C/svg%3E");
}
.album > *, .entry > * { position: relative; }

/* ---------- 목록 머리 ---------- */
.album__head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
  padding-bottom: clamp(28px, 4vw, 48px);
  margin-bottom: clamp(32px, 5vw, 64px);
  border-bottom: 1px solid var(--rule);
}
.album__head { grid-template-rows: 1fr auto; }
.album__title { grid-column: 1; grid-row: 1; align-self: end; }
.album__note { grid-column: 1; grid-row: 2; }
.album__title { font-size: clamp(1.5rem, 2vw + .8rem, 2.2rem); letter-spacing: .06em; }
.album__note { margin: .5em 0 0; color: var(--haze); font-size: .92rem; }
.album__kanji {
  grid-column: 2;
  grid-row: 1 / 3;
  margin: 0;
  writing-mode: vertical-rl;
  font-family: var(--mincho);
  --kfs: clamp(2.2rem, 4.6vw, 3.8rem);
  font-size: var(--kfs);
  line-height: 1;
  letter-spacing: .16em;
  color: var(--kin);
}

/* 목록 머리 한자의 읽기: 한자 왼쪽 아래에 작게 세로로 */
.album__kanji { position: relative; }
.album__yomi {
  position: absolute;
  right: 100%;
  /* 글자 아래 끝을 帖과 맞춘다: 한자 뒤에 남는 글자 간격(.16em)과 글꼴 차이만큼 올리고, 자기 뒤 간격(.3em)은 없앤다 */
  bottom: calc(var(--kfs) * .203);   /* .16 + 두 글꼴의 글자 아래 여백 차이(.043) */
  margin-bottom: -.3em;
  margin-right: .7rem;
  writing-mode: vertical-rl;
  font-family: var(--serif-kr);
  font-size: .8rem;
  line-height: 1;
  letter-spacing: .3em;
  white-space: nowrap;
  color: var(--haze);
}

/* ---------- 붙인 사진 ---------- */
.album__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(36px, 5vw, 72px) clamp(24px, 4vw, 56px);
  align-items: start;
}
.snap a { display: block; text-decoration: none; color: var(--kinu); }
.snap:nth-child(3n+1) .snap__photo { transform: rotate(-.7deg); }
.snap:nth-child(3n+2) .snap__photo { transform: rotate(.5deg); margin-top: 3vh; }
.snap:nth-child(3n)   .snap__photo { transform: rotate(-.3deg); }
.snap__photo {
  position: relative;
  display: block;
  padding: 7px;
  background: #0b0f16;
  box-shadow: 0 10px 24px rgba(0,0,0,.5);
  transition: transform .5s ease;
}
.snap__photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  opacity: .88;
  transition: opacity .5s ease;
}
.snap a:hover .snap__photo, .snap a:focus-visible .snap__photo { transform: rotate(0) translateY(-3px); }
.snap a:hover img, .snap a:focus-visible img { opacity: 1; }

/* 네 귀퉁이 모서리 종이 */
.snap__photo::after, .mount__photo::after {
  content: "";
  position: absolute;
  inset: -3px;
  pointer-events: none;
  --c: 22px;
  background:
    linear-gradient(135deg, var(--corner) 50%, transparent 50%) top left / var(--c) var(--c),
    linear-gradient(225deg, var(--corner) 50%, transparent 50%) top right / var(--c) var(--c),
    linear-gradient(45deg,  var(--corner) 50%, transparent 50%) bottom left / var(--c) var(--c),
    linear-gradient(315deg, var(--corner) 50%, transparent 50%) bottom right / var(--c) var(--c);
  background-repeat: no-repeat;
  opacity: .82;
  filter: drop-shadow(0 1px 1px rgba(0,0,0,.5));
}

/* 흰 잉크 설명 */
.snap__cap { display: block; margin-top: 1.1em; padding-left: .2em; }
.snap__cap time, .entry__meta time {
  font-family: var(--mincho);
  color: var(--kin);
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
}
.snap__cap time { font-size: .85rem; }
.snap__way { margin-left: .8em; color: var(--haze); font-size: .8rem; letter-spacing: .08em; }
.snap__cap .mount__tag { margin: 0 0 0 .8em; vertical-align: .1em; }
.snap__title { display: block; margin-top: .2em; font-size: 1.08rem; line-height: 1.6; text-wrap: balance; }
.snap a:hover .snap__title { color: var(--kin); }

/* 장 넘기기 */
.album__pager, .entry__nav {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin-top: clamp(48px, 7vw, 96px);
  padding-top: 1.4em;
  border-top: 1px solid var(--rule);
  font-size: .92rem;
}
.album__pager a, .entry__nav a {
  color: var(--kinu);
  text-decoration: none;
  letter-spacing: .1em;
  border-bottom: 1px solid var(--kin);
  padding-bottom: .2em;
}
.album__pager a:hover, .entry__nav a:hover { color: var(--kin); }
.album__pager .is-none { visibility: hidden; }
.album__folio { font-family: var(--mincho); color: var(--haze); letter-spacing: .2em; font-variant-numeric: tabular-nums; }
.album__empty { color: var(--haze); padding: 10vh 0; text-align: center; }

/* ---------- 글 한 편 ---------- */
.entry { max-width: 980px; }
.entry__head { max-width: 34em; margin: 0 auto clamp(32px, 5vw, 56px); }
.entry__meta { margin: 0 0 .8em; font-size: .9rem; color: var(--haze); }
.entry__meta time { margin-right: .8em; }
.entry__title { font-size: clamp(1.6rem, 2.2vw + .9rem, 2.5rem); letter-spacing: .03em; text-wrap: balance; }
.entry__lead { margin: 1.2em 0 0; color: var(--haze); }

.mount { margin: 0 0 3em; }
.mount__photo { position: relative; display: block; padding: 8px; background: #0b0f16; box-shadow: 0 14px 34px rgba(0,0,0,.5); }
.mount__photo img { width: 100%; }
.mount figcaption { margin-top: .7rem; padding-left: .2em; }
.mount--lead { margin: 0 auto clamp(40px, 6vw, 72px); }
.mount--lead img { max-height: 78vh; object-fit: cover; }
.entry__body figure.mount { margin: 3em calc(-1 * clamp(0px, 6vw, 96px)); }
.entry__body figure.mount--half { width: min(62%, 420px); margin-left: auto; margin-right: calc(-1 * clamp(0px, 4vw, 64px)); }
.entry__body figure.mount--half .mount__photo { transform: rotate(.6deg); }
.mount__tag {
  display: inline-block;
  margin-right: .6em;
  padding: 0 .45em;
  border: 1px solid var(--kin);
  color: var(--kin);
  font-size: .72rem;
  letter-spacing: .1em;
  line-height: 1.6;
}
.entry__body { max-width: 34em; margin: 0 auto; }
.entry__body p { margin-bottom: 1.4em; }
.entry__nav { max-width: 34em; margin-left: auto; margin-right: auto; }
.entry__nav .next { text-align: right; }
.entry__nav small { display: block; color: var(--haze); font-size: .8rem; letter-spacing: .1em; border: 0; }

/* ---------- 표지 ---------- */
.cover {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  cursor: pointer;
  perspective: 2200px;
}
.cover__board {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(24px, 5vw, 80px);
  padding: 12vh var(--gutter);
  transform-origin: 0 50%;
  backface-visibility: hidden;
  background:
    linear-gradient(90deg, rgba(0,0,0,.55), rgba(0,0,0,0) 4%, rgba(255,255,255,.03) 4.4%, rgba(0,0,0,0) 5%),
    repeating-linear-gradient(0deg, rgba(255,255,255,.018) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(0,0,0,.14) 0 1px, transparent 1px 3px),
    var(--cloth);
}
.cover__kanji {
  grid-column: 2;
  margin: 0;
  writing-mode: vertical-rl;
  font-family: var(--mincho);
  font-weight: 700;
  font-size: clamp(4.5rem, 14vw, 10rem);
  line-height: 1;
  letter-spacing: .12em;
  /* 금박: 빛을 받는 쪽이 조금 더 밝다 */
  background: linear-gradient(160deg, #d9c08a 0%, var(--kin) 40%, #8d7443 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 1px 0 rgba(0,0,0,.6));
}
/* 제첨: 세로로 붙인 한지 이름표 */
.cover__slip {
  grid-column: 3;
  justify-self: start;
  align-self: start;
  margin: 0;
  writing-mode: vertical-rl;
  padding: 1.2em .7em;
  background: var(--washi);
  color: var(--sumi);
  font-size: clamp(1rem, 1vw + .7rem, 1.35rem);
  font-weight: 700;
  letter-spacing: .3em;
  box-shadow: 0 2px 6px rgba(0,0,0,.4), inset 0 0 0 4px var(--washi), inset 0 0 0 5px rgba(28,26,23,.35);
}
.cover__slip small { display: block; margin-top: 1.4em; font-size: .62em; font-weight: 400; letter-spacing: .2em; opacity: .75; }
.cover__hint {
  position: absolute;
  bottom: calc(5vh + env(safe-area-inset-bottom, 0px));
  left: 0; right: 0;
  margin: 0;
  text-align: center;
  color: var(--haze);
  font-size: .82rem;
  letter-spacing: .2em;
  backface-visibility: hidden;
}

/* ---------- 책장 넘김 ---------- */
.turn {
  position: fixed;
  inset: 0;
  z-index: 40;   /* 위 막대(50) 아래: 막대는 제본처럼 그대로 있다 */
  overflow: hidden;
  perspective: 2200px;
  perspective-origin: 0 45%;
  pointer-events: none;
}
.turn__sheet {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: var(--ai);
  transform-origin: 0 50%;
  backface-visibility: hidden;
}
.turn__sheet > .dv { will-change: transform; }
.turn__shade {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(0,0,0,.75), rgba(0,0,0,.25) 60%, rgba(0,0,0,.05));
  opacity: 0;
}
.turn__leaf .turn__shade { background: linear-gradient(270deg, rgba(0,0,0,.7), rgba(0,0,0,.2) 50%, rgba(255,255,255,.04)); }
.diary.is-turning { visibility: hidden; }
html.is-turning { overflow: hidden; }

/* ---------- 좁은 화면 ---------- */
@media (max-width: 900px) {
  .album__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .snap:nth-child(3n+2) .snap__photo { margin-top: 0; }
  .snap:nth-child(2n) .snap__photo { margin-top: 3vh; }
}
@media (max-width: 560px) {
  .dv { padding-top: 88px; padding-left: 10px; padding-right: 10px; }
  .album, .entry { padding-left: 20px; padding-right: 20px; }
  .album__grid { grid-template-columns: 1fr; gap: 40px; }
  .snap .snap__photo { margin-top: 0 !important; }
  .entry__body figure.mount { margin-left: -8px; margin-right: -8px; }
  .entry__body figure.mount--half { width: 78%; margin-right: -4px; }
  .cover__board { grid-template-columns: 1fr auto auto 1fr; }
  .cover__kanji { grid-column: 2; }
  .cover__slip { grid-column: 3; }
}

@media (prefers-reduced-motion: reduce) {
  .snap__photo, .snap__photo img { transition: none; }
}