/* Ý 27: Cuốn nhật ký riêng (lưu bút). Hiệu ứng chỉ dùng transform và opacity; máy bật "giảm chuyển động" thì đứng yên. */
:root {
  --dy-paper: #FFFCF4;
  --dy-paper-2: #FFF6E4;
  --dy-rule: rgba(214, 160, 96, .28);
  --dy-margin: rgba(242, 139, 107, .45);
  --dy-ink: #4A3426;
  --dy-leather: #C9692A;
  --dy-leather-dark: #8E4615;
  --dy-gold: #FFE3A3;
  --dy-line-h: 2.1rem;
}

.dy-shelf { perspective: 2000px; }

/* ---------- Bìa sổ ---------- */
.dy-cover-stage { position: relative; width: min(340px, 78vw); aspect-ratio: 3 / 4; margin: 1rem auto 0; perspective: 1600px; }
.dy-cover-pages { position: absolute; inset: 8px -10px -6px 10px; border-radius: 4px 14px 14px 4px; z-index: 0;
  background: repeating-linear-gradient(90deg, #FFF8EA 0 3px, #F1DFC3 3px 4px); box-shadow: var(--fa-shadow-lg); }
.dy-cover { position: absolute; inset: 0; z-index: 1; display: block; border-radius: 6px 16px 16px 6px; color: var(--dy-gold); text-decoration: none;
  background:
    radial-gradient(120% 80% at 70% 10%, rgba(255, 210, 140, .45), transparent 55%),
    radial-gradient(90% 60% at 20% 95%, rgba(110, 50, 10, .35), transparent 60%),
    linear-gradient(150deg, #E3893F, var(--dy-leather) 45%, var(--dy-leather-dark));
  box-shadow: inset 0 0 0 1px rgba(255, 230, 180, .25), 0 26px 50px -22px rgba(120, 60, 15, .7);
  transform-origin: left center; transform: rotateY(0deg); transition: transform .5s var(--fa-ease); }
.dy-cover::before { content: ""; position: absolute; inset: 14px 14px 14px 34px; border: 2px dashed rgba(255, 227, 163, .55); border-radius: 4px 10px 10px 4px; }
.dy-cover:hover, .dy-cover:focus-visible { transform: rotateY(-8deg) translateY(-4px); color: var(--dy-gold); }
.dy-cover:focus-visible { outline: 3px solid var(--fa-honey); outline-offset: 4px; }
.dy-cover-spine { position: absolute; left: 0; top: 0; bottom: 0; width: 22px; border-radius: 6px 0 0 6px;
  background: linear-gradient(90deg, rgba(60, 25, 5, .45), rgba(60, 25, 5, .05)); }
.dy-cover-ribbon { position: absolute; right: 64px; bottom: -34px; width: 16px; height: 70px; background: linear-gradient(#F28B6B, #D9573A);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 82%, 0 100%); }
.dy-cover-sun { position: absolute; top: 12%; left: 50%; transform: translateX(-30%); font-size: 2.6rem; color: #FFD27A;
  filter: drop-shadow(0 0 14px rgba(255, 200, 100, .8)); animation: dy-sun 6s ease-in-out infinite; }
@keyframes dy-sun { 50% { transform: translateX(-30%) scale(1.08) rotate(20deg); } }
.dy-cover-label { position: absolute; left: 34px; right: 14px; top: 38%; display: grid; justify-items: center; text-align: center; gap: .15rem; }
.dy-cover-eyebrow { text-transform: uppercase; letter-spacing: .3em; font-size: .72rem; opacity: .85; }
.dy-cover-title { font-family: 'Playfair Display', Georgia, serif; font-style: italic; font-size: 1.25rem; }
.dy-cover-name { font-family: 'Patrick Hand', 'Be Vietnam Pro', cursive; font-size: 2.1rem; line-height: 1.1; color: #FFF3D6;
  text-shadow: 0 2px 0 rgba(90, 40, 10, .35); padding: 0 .5rem; overflow-wrap: anywhere; }
.dy-cover-lock { margin-top: .9rem; font-size: .8rem; padding: .25rem .8rem; border-radius: 999px; background: rgba(90, 40, 10, .28); }
.dy-cover-clasp { position: absolute; right: -8px; top: 50%; width: 46px; height: 36px; margin-top: -18px; border-radius: 10px 0 0 10px;
  background: linear-gradient(90deg, #9C4E19, #7A3A10); display: grid; place-items: center; color: #FFD27A; box-shadow: 0 4px 10px -4px rgba(0, 0, 0, .4); }
.dy-cover.is-opening { transform: rotateY(-165deg); opacity: 0; transition: transform .75s cubic-bezier(.55, .05, .35, 1), opacity .3s .5s; }

.dy-cover-info { max-width: 560px; text-align: center; }
.dy-private { display: flex; gap: .6rem; align-items: flex-start; justify-content: center; text-align: left; color: var(--fa-amber-dark); font-weight: 500; }
.dy-private i { font-size: 1.3rem; color: var(--fa-honey); }
.dy-stats { display: flex; justify-content: center; flex-wrap: wrap; gap: .5rem 2rem; margin: 1rem 0 1.25rem; }
.dy-stats li { display: grid; }
.dy-stats strong { font-family: 'Playfair Display', Georgia, serif; font-size: 1.5rem; color: var(--fa-ink); }
.dy-stats span { font-size: .8rem; color: var(--fa-muted); }

/* ---------- Thanh công cụ ---------- */
.dy-toolbar { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; justify-content: space-between; margin-bottom: .9rem; }
.dy-jump { display: flex; gap: .4rem; align-items: center; }
.dy-jump input { width: 10.5rem; border-radius: 999px; border-color: var(--fa-line); }
.dy-lock { font-size: .82rem; color: var(--fa-amber-dark); background: var(--fa-soft); padding: .3rem .8rem; border-radius: 999px; }
.dy-alert { max-width: 1040px; margin-left: auto; margin-right: auto; }

/* ---------- Hai trang sổ ---------- */
.dy-book { position: relative; display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); max-width: 1040px; margin: 0 auto;
  padding: 12px; border-radius: 20px; transform-style: preserve-3d;
  background: linear-gradient(150deg, #E3893F, var(--dy-leather) 50%, var(--dy-leather-dark));
  box-shadow: 0 30px 60px -30px rgba(120, 60, 15, .75); }
.dy-page { position: relative; min-height: 560px; color: var(--dy-ink); }
.dy-left { padding: 2rem 1.75rem 1.5rem; border-radius: 10px 4px 4px 10px;
  background: linear-gradient(90deg, var(--dy-paper-2), var(--dy-paper) 70%, #F4E3C6); }
.dy-right { padding: 2.2rem 2rem 1.75rem 3.4rem; border-radius: 4px 10px 10px 4px;
  background:
    linear-gradient(90deg, transparent 2.5rem, var(--dy-margin) 2.5rem, var(--dy-margin) calc(2.5rem + 1px), transparent calc(2.5rem + 1px)),
    linear-gradient(90deg, #F1DDBB, var(--dy-paper) 8%),
    var(--dy-paper);
  background-color: var(--dy-paper); }
.dy-right::before { content: ""; position: absolute; inset: 5.2rem 1.25rem 1.25rem 1rem; pointer-events: none;
  background: repeating-linear-gradient(to bottom, transparent 0 calc(var(--dy-line-h) - 1px), var(--dy-rule) calc(var(--dy-line-h) - 1px) var(--dy-line-h)); }
.dy-ribbon { position: absolute; top: -12px; right: 2.5rem; width: 14px; height: 84px; background: linear-gradient(#F28B6B, #D9573A);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 86%, 0 100%); }

/* Trang trái: ngày tháng */
.dy-date { display: grid; justify-items: center; text-align: center; margin-bottom: 1.25rem; }
.dy-weekday { font-family: 'Patrick Hand', cursive; font-size: 1.4rem; color: var(--fa-amber-dark); }
.dy-day { font-family: 'Playfair Display', Georgia, serif; font-size: 5rem; line-height: 1; font-weight: 600; color: var(--fa-ink);
  text-shadow: 0 6px 18px rgba(245, 166, 35, .35); }
.dy-month { font-weight: 600; letter-spacing: .02em; }
.dy-lunar { font-size: .85rem; color: var(--fa-muted); margin-top: .2rem; }
.dy-today-tag { margin-top: .5rem; font-size: .78rem; font-weight: 600; color: #fff; padding: .2rem .7rem; border-radius: 999px;
  background: linear-gradient(135deg, var(--fa-honey), var(--fa-amber)); }

.dy-cal { display: grid; grid-template-columns: repeat(7, 1fr); gap: .2rem; text-align: center; max-width: 300px; margin: 0 auto; }
.dy-cal-head { font-size: .7rem; font-weight: 600; color: var(--fa-muted); padding-bottom: .2rem; }
.dy-cal-day { position: relative; display: grid; place-items: center; aspect-ratio: 1; border-radius: 50%; font-size: .85rem;
  color: var(--dy-ink); text-decoration: none; transition: transform .25s var(--fa-ease), opacity .25s; }
a.dy-cal-day:hover { transform: scale(1.15); color: var(--fa-amber-dark); }
.dy-cal-day.is-future { opacity: .35; }
.dy-cal-day.is-written::after { content: ""; position: absolute; bottom: 3px; width: 5px; height: 5px; border-radius: 50%; background: var(--fa-amber); }
.dy-cal-day.is-today { box-shadow: inset 0 0 0 2px var(--fa-honey); }
.dy-cal-day.is-selected { background: linear-gradient(135deg, var(--fa-honey), var(--fa-amber)); color: #fff; font-weight: 700; }
.dy-cal-day.is-selected::after { background: #fff; }
.dy-cal-note { text-align: center; font-size: .78rem; color: var(--fa-muted); margin: .7rem 0 1rem; }
.dy-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--fa-amber); vertical-align: middle; }
.dy-written-nav { display: grid; gap: .4rem; }
.dy-link { display: flex; align-items: center; gap: .4rem; justify-content: center; font-size: .88rem; color: var(--fa-amber-dark);
  text-decoration: none; padding: .35rem .6rem; border-radius: 999px; transition: opacity .2s; }
.dy-link:hover { background: var(--fa-soft); }
.dy-link small { color: var(--fa-muted); }

/* Trang phải: chữ viết tay */
.dy-sheet { position: relative; z-index: 1; }
.dy-mood { font-family: 'Patrick Hand', cursive; font-size: 1.25rem; color: var(--fa-amber-dark); margin: 0 0 .6rem; height: 2.4rem; }
.dy-mood i { color: var(--fa-honey); font-size: 1.4rem; }
.dy-text { font-family: 'Patrick Hand', 'Be Vietnam Pro', cursive; font-size: 1.32rem; line-height: var(--dy-line-h);
  white-space: pre-wrap; overflow-wrap: anywhere; min-height: calc(var(--dy-line-h) * 6); }
.dy-photos { display: flex; flex-wrap: wrap; gap: 1rem 1.25rem; margin: 1.4rem 0 .5rem; }
.dy-snap { position: relative; display: block; width: 150px; padding: 8px 8px 22px; background: #fff; border-radius: 3px;
  box-shadow: 0 10px 22px -12px rgba(120, 60, 15, .55); transition: transform .3s var(--fa-ease); }
.dy-snap::before { content: ""; position: absolute; top: -9px; left: 50%; width: 58px; height: 20px; margin-left: -29px;
  background: rgba(255, 214, 140, .75); transform: rotate(-4deg); }
.dy-snap img { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 2px; }
.dy-snap.tilt-0 { transform: rotate(-3deg); }
.dy-snap.tilt-1 { transform: rotate(2.5deg); }
.dy-snap.tilt-2 { transform: rotate(-1deg); }
a.dy-snap:hover { transform: rotate(0deg) scale(1.05); }
.dy-snap-x { position: absolute; top: -10px; right: -10px; width: 30px; height: 30px; border-radius: 50%; border: 0; display: grid; place-items: center;
  color: #fff; background: #D9482B; box-shadow: 0 4px 10px -4px rgba(0, 0, 0, .5); }
.dy-sign { font-family: 'Patrick Hand', cursive; text-align: right; color: var(--fa-muted); margin: 1rem 0 .5rem; }
.dy-actions { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: flex-end; margin-top: .75rem; }
.dy-empty { display: grid; justify-items: center; text-align: center; gap: .6rem; padding-top: 5rem; }
.dy-empty > i { font-size: 2.6rem; color: var(--fa-honey); }
.dy-empty p { font-family: 'Patrick Hand', cursive; font-size: 1.35rem; max-width: 22rem; margin: 0; }

/* Viết */
.dy-moods { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: .6rem; padding-right: 2.2rem; }  /* chừa chỗ cho dải ruy băng */
.dy-moods legend { font-size: .85rem; font-weight: 600; color: var(--fa-muted); margin-bottom: .3rem; }
.dy-mood-chip { display: inline-flex; align-items: center; gap: .3rem; padding: .25rem .7rem; border-radius: 999px; font-size: .85rem;
  border: 1px solid var(--fa-line); background: #fff; cursor: pointer; transition: transform .2s var(--fa-ease); }
.dy-mood-chip:hover { transform: translateY(-2px); }
.dy-mood-chip i { color: var(--fa-honey); }
.btn-check:checked + .dy-mood-chip { background: var(--fa-soft); border-color: var(--fa-amber); color: var(--fa-amber-dark); font-weight: 600; }
.btn-check:focus-visible + .dy-mood-chip { outline: 2px solid var(--fa-honey); outline-offset: 2px; }
.dy-textarea { display: block; width: 100%; border: 0; resize: vertical; outline: none; color: var(--dy-ink);
  font-family: 'Patrick Hand', 'Be Vietnam Pro', cursive; font-size: 1.32rem; line-height: var(--dy-line-h); padding: 0;
  background: repeating-linear-gradient(to bottom, transparent 0 calc(var(--dy-line-h) - 1px), var(--dy-rule) calc(var(--dy-line-h) - 1px) var(--dy-line-h)) local;
  min-height: calc(var(--dy-line-h) * 10); }
.dy-textarea:focus { box-shadow: 0 0 0 3px rgba(245, 166, 35, .2); border-radius: 4px; }
.is-editing .dy-right::before { display: none; }
.dy-count { text-align: right; font-size: .75rem; color: var(--fa-muted); margin: .2rem 0 .6rem; }
.dy-upload { margin-top: .4rem; }
.dy-photos-edit { margin-top: 1.5rem; }
.dy-delete { text-align: right; margin-top: .5rem; }

/* Nút lật trang */
.dy-turns { display: flex; justify-content: space-between; align-items: center; gap: .5rem; max-width: 1040px; margin: 1rem auto 0; }
.dy-turn { display: inline-flex; align-items: center; gap: .4rem; padding: .55rem 1.1rem; border-radius: 999px; text-decoration: none; font-weight: 600;
  color: var(--fa-amber-dark); background: var(--fa-surface); border: 1px solid var(--fa-line); box-shadow: var(--fa-shadow);
  transition: transform .25s var(--fa-ease); }
.dy-turn:hover { transform: translateY(-2px); color: var(--fa-amber-dark); }
.dy-turn-today { margin: 0 auto; }

/* ---------- Hiệu ứng lật trang ---------- */
/* Tờ giấy (bản sao của trang) quay quanh gáy sổ. Mặt trước là trang cũ, mặt sau là giấy trắng. */
.dy-leaf { position: absolute; z-index: 5; transform-style: preserve-3d; pointer-events: none; will-change: transform; }
.dy-leaf-face { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; overflow: hidden;
  border-radius: 4px 10px 10px 4px; box-shadow: 0 0 30px -10px rgba(90, 40, 10, .45); }
.dy-leaf-back { transform: rotateY(180deg); background: linear-gradient(270deg, var(--dy-paper-2), var(--dy-paper) 70%, #F4E3C6); border-radius: 10px 4px 4px 10px; }
.dy-leaf.turn-next { transform-origin: left center; animation: dy-turn-next .7s cubic-bezier(.45, .05, .35, 1) forwards; }
.dy-leaf.turn-prev { transform-origin: right center; animation: dy-turn-prev .7s cubic-bezier(.45, .05, .35, 1) forwards; }
@keyframes dy-turn-next { from { transform: rotateY(0deg); } to { transform: rotateY(-180deg); } }
@keyframes dy-turn-prev { from { transform: rotateY(0deg); } to { transform: rotateY(180deg); } }
/* Chỉ làm mờ trang thật bên dưới (con trực tiếp của sổ), không làm mờ tờ giấy đang lật */
.dy-book.is-turning > .dy-page .dy-sheet, .dy-book.is-turning > .dy-page .dy-date, .dy-book.is-turning > .dy-page .dy-cal { opacity: .15; transition: opacity .35s .2s; }

/* Trang mới hiện ra sau khi lật */
.dy-enter-next .dy-right .dy-sheet, .dy-enter-next .dy-date { animation: dy-in-next .5s var(--fa-ease) both; }
.dy-enter-prev .dy-right .dy-sheet, .dy-enter-prev .dy-date { animation: dy-in-prev .5s var(--fa-ease) both; }
@keyframes dy-in-next { from { opacity: 0; transform: translateX(14px); } to { opacity: 1; transform: none; } }
@keyframes dy-in-prev { from { opacity: 0; transform: translateX(-14px); } to { opacity: 1; transform: none; } }

/* ---------- Điện thoại: một trang, ngày tháng gọn ở trên ---------- */
@media (max-width: 767.98px) {
  .dy-book { grid-template-columns: 1fr; padding: 8px; border-radius: 16px; }
  .dy-page { min-height: 0; }
  .dy-left { border-radius: 10px 10px 4px 4px; padding: 1.1rem 1rem .9rem; display: grid; grid-template-columns: auto 1fr; gap: .25rem 1rem; align-items: center;
    background: linear-gradient(180deg, var(--dy-paper-2), var(--dy-paper)); }
  .dy-date { margin: 0; }
  .dy-day { font-size: 3.4rem; }
  .dy-weekday { font-size: 1.15rem; }
  .dy-cal { max-width: none; gap: .1rem; }
  .dy-cal-note, .dy-written-nav { grid-column: 1 / -1; }
  .dy-cal-note { margin: .4rem 0 .2rem; }
  .dy-written-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 0 .5rem; }
  .dy-link { font-size: .78rem; padding: .3rem; white-space: nowrap; }
  .dy-cal-day { font-size: .8rem; }
  .dy-right { border-radius: 4px 4px 10px 10px; padding: 1.4rem 1rem 1.25rem 2.6rem; min-height: 420px;
    background:
      linear-gradient(90deg, transparent 1.9rem, var(--dy-margin) 1.9rem, var(--dy-margin) calc(1.9rem + 1px), transparent calc(1.9rem + 1px)),
      var(--dy-paper); }
  .dy-right::before { inset: 4.2rem .75rem 1rem .5rem; }
  .dy-ribbon { right: 1.25rem; height: 60px; }
  .dy-snap { width: calc(50% - .7rem); max-width: 150px; }
  .dy-empty { padding-top: 2.5rem; }
  .dy-turn span { display: none; }
  .dy-turn-today span { display: inline; }
  .dy-turn { padding: .6rem .95rem; }
  .dy-leaf.turn-prev { transform-origin: left center; animation-name: dy-turn-prev-mobile; }
  @keyframes dy-turn-prev-mobile { from { transform: rotateY(-120deg); opacity: 0; } to { transform: rotateY(0deg); opacity: 1; } }
}

@media (prefers-reduced-motion: reduce) {
  .dy-cover, .dy-cover.is-opening, .dy-cal-day, .dy-snap, .dy-turn, .dy-mood-chip { transition: none; }
  .dy-cover-sun, .dy-leaf, .dy-enter-next .dy-right .dy-sheet, .dy-enter-next .dy-date,
  .dy-enter-prev .dy-right .dy-sheet, .dy-enter-prev .dy-date { animation: none; }
}