:root {
  --pink-50: #fff5f8;
  --pink-100: #ffe4ee;
  --pink-200: #ffc9dc;
  --pink-300: #ffa3c4;
  --pink-400: #ff7aa8;
  --pink-500: #ef4f86;
  --berry: #c2366b;
  --ink: #5a2a3d;
  --ink-soft: #8c5a6e;
  --shadow: 0 12px 30px -12px rgba(194, 54, 107, .45);
  --r: 26px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; min-height: 100%; }

body {
  font-family: "Nunito", "Gowun Dodum", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 8%, #fff 0, transparent 38%),
    radial-gradient(circle at 85% 92%, #ffd0e3 0, transparent 45%),
    linear-gradient(160deg, #fff1f7, #ffe2ee 60%, #ffd4e5);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(#ffc2d8 1.6px, transparent 1.6px);
  background-size: 24px 24px;
  opacity: .5;
  pointer-events: none;
}

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- floating stickers ---------- */
.stickers { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.sticker {
  position: absolute;
  left: var(--x); top: var(--y);
  font-size: var(--s);
  opacity: .6;
  animation: floaty var(--d) ease-in-out var(--delay) infinite alternate;
  filter: drop-shadow(0 4px 4px rgba(194, 54, 107, .18));
}
@keyframes floaty {
  from { transform: translateY(0) rotate(-10deg); }
  to   { transform: translateY(-24px) rotate(10deg); }
}

/* ---------- screens ---------- */
.screen {
  display: none;
  position: relative;
  z-index: 1;
  min-height: 100vh;
  max-width: 560px;
  margin: 0 auto;
  padding: 32px 16px 48px;
  flex-direction: column;
  align-items: center;
}
.screen.is-active { display: flex; animation: fadeUp .6s ease both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* ---------- welcome ---------- */
#welcome { justify-content: center; text-align: center; gap: 18px; }
.eyebrow { font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.45rem; color: var(--berry); margin: 0; }
h1 {
  font-family: "Fredoka", "Jua", sans-serif;
  font-weight: 600;
  font-size: clamp(2.1rem, 8.5vw, 3.1rem);
  line-height: 1.08;
  margin: 0;
  color: var(--berry);
  text-shadow: 0 3px 0 #fff, 0 6px 14px rgba(239, 79, 134, .25);
}
.tiny { margin: 0; font-size: .85rem; color: var(--ink-soft); font-weight: 700; }

.book {
  position: relative;
  width: 200px; height: 252px;
  margin: 14px 0 10px;
  perspective: 1200px;
  animation: bob 3.6s ease-in-out infinite;
}
@keyframes bob { 50% { transform: translateY(-8px) rotate(-1.5deg); } }
.book-pages {
  position: absolute;
  inset: 6px 0 6px 10px;
  border-radius: 6px 16px 16px 6px;
  background: repeating-linear-gradient(#fffaf4 0 7px, #f3e3da 7px 8px);
  box-shadow: var(--shadow);
  display: flex; align-items: center; justify-content: center;
}
.page-note { font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.7rem; color: var(--berry); }
.book-cover {
  position: absolute;
  inset: 0;
  border-radius: 8px 20px 20px 8px;
  background: linear-gradient(140deg, #ffa6c6, #ef4f86);
  box-shadow: inset 12px 0 0 rgba(0, 0, 0, .07), var(--shadow);
  transform-origin: left center;
  transition: transform 1s cubic-bezier(.6, .05, .3, 1);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
}
.book-cover::before {
  content: "";
  position: absolute;
  inset: 12px 12px 12px 22px;
  border: 2px dashed rgba(255, 255, 255, .75);
  border-radius: 6px 14px 14px 6px;
}
.book.open .book-cover { transform: rotateY(-165deg); }
.cover-sticker { font-size: 2.4rem; animation: wiggle 2.6s ease-in-out infinite; }
.cover-title { font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 2.1rem; color: #fff; text-shadow: 0 2px 0 rgba(194, 54, 107, .5); }
.cover-hearts { color: #fff; letter-spacing: 4px; opacity: .9; }
.cover-lock { position: absolute; right: -20px; top: 50%; width: 44px; height: 52px; margin-top: -26px; }

.padlock .shackle { transition: transform .5s cubic-bezier(.3, 1.6, .5, 1); }
.unlocked .shackle, .book.open .shackle { transform: translateY(-9px); }

@keyframes wiggle { 0%, 100% { transform: rotate(-8deg); } 50% { transform: rotate(8deg); } }

/* ---------- buttons ---------- */
.btn {
  font-family: "Fredoka", "Jua", sans-serif;
  font-size: 1.2rem;
  font-weight: 500;
  color: #fff;
  background: linear-gradient(180deg, #ff94b9, #ef4f86);
  border: none;
  border-radius: 999px;
  padding: 14px 36px;
  cursor: pointer;
  box-shadow: 0 6px 0 var(--berry), 0 14px 24px -10px rgba(194, 54, 107, .7);
  transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(4px); box-shadow: 0 2px 0 var(--berry); }
.btn:focus-visible { outline: 3px solid var(--pink-400); outline-offset: 4px; }
.btn:disabled { opacity: .7; cursor: wait; }

.chip {
  flex-shrink: 0;
  background: #fff;
  border: 2px solid var(--pink-200);
  color: var(--berry);
  border-radius: 999px;
  padding: 8px 14px;
  font: 800 .85rem "Nunito", "Gowun Dodum", sans-serif;
  cursor: pointer;
}
.chip:hover { border-color: var(--pink-400); }

.link {
  background: none; border: none; cursor: pointer;
  margin-top: 12px;
  font: 700 .95rem "Nunito", "Gowun Dodum", sans-serif;
  color: var(--ink-soft);
  text-decoration: underline;
}

/* ---------- lock modal ---------- */
.modal {
  position: fixed; inset: 0; z-index: 20;
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  background: rgba(255, 210, 228, .55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  animation: fade .25s ease;
}
@keyframes fade { from { opacity: 0; } }
.modal-card {
  width: 100%; max-width: 360px;
  background: #fff;
  border: 3px solid var(--pink-100);
  border-radius: 30px;
  padding: 26px 22px 18px;
  text-align: center;
  box-shadow: 0 24px 50px -18px rgba(194, 54, 107, .55);
  animation: popIn .45s cubic-bezier(.3, 1.5, .5, 1);
}
@keyframes popIn { from { opacity: 0; transform: scale(.85) translateY(12px); } }
.modal-lock { width: 64px; height: 74px; display: block; margin: 0 auto 6px; }
.modal-card h2 { font-family: "Fredoka", "Jua", sans-serif; font-weight: 600; color: var(--berry); margin: 4px 0; font-size: 1.5rem; }
.modal-sub { margin: 0 0 16px; color: var(--ink-soft); font-weight: 700; }
#keyInput {
  width: 100%;
  padding: 14px 18px;
  border-radius: 999px;
  border: 2px solid var(--pink-200);
  background: var(--pink-50);
  font: 700 1.05rem "Nunito", "Gowun Dodum", sans-serif;
  color: var(--ink);
  text-align: center;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
#keyInput:focus { border-color: var(--pink-400); box-shadow: 0 0 0 4px rgba(255, 163, 196, .45); }
.error { min-height: 1.4em; margin: 10px 0; color: var(--berry); font-weight: 800; font-size: .95rem; }
.shake { animation: shake .45s; }
@keyframes shake { 20%, 60% { transform: translateX(-9px); } 40%, 80% { transform: translateX(9px); } }

/* ---------- diary ---------- */
#diary { gap: 22px; padding-top: 24px; }
.diary-top { width: 100%; display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.date { margin: 0; font-size: .9rem; font-weight: 800; color: var(--ink-soft); }
#greeting {
  margin: 2px 0 0;
  font-family: "Fredoka", "Jua", sans-serif;
  font-weight: 600;
  font-size: clamp(1.4rem, 5.6vw, 1.9rem);
  line-height: 1.15;
  color: var(--berry);
}

.heart-zone { position: relative; display: flex; flex-direction: column; align-items: center; margin-top: 6px; }
.big-heart {
  width: min(62vw, 240px);
  padding: 0; border: none; background: none; cursor: pointer;
  animation: beat 1.4s ease-in-out infinite;
  filter: drop-shadow(0 16px 18px rgba(239, 79, 134, .4));
  -webkit-tap-highlight-color: transparent;
}
.big-heart svg { width: 100%; display: block; }
.big-heart:focus-visible { outline: 3px dashed var(--pink-400); outline-offset: 8px; border-radius: 30px; }
.big-heart.pop { animation: pop .45s ease; }
@keyframes beat {
  0%, 100% { transform: scale(1); }
  15% { transform: scale(1.08); }
  30% { transform: scale(.98); }
  45% { transform: scale(1.05); }
}
@keyframes pop {
  40% { transform: scale(.84); }
  70% { transform: scale(1.15); }
  100% { transform: scale(1); }
}
.eye { transform-box: fill-box; transform-origin: center; animation: blink 4.2s infinite; }
@keyframes blink { 0%, 93%, 100% { transform: scaleY(1); } 96% { transform: scaleY(.1); } }
.hint { margin: 8px 0 0; font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.6rem; color: var(--berry); }

.burst {
  position: absolute; left: 50%; top: 42%;
  font-size: 22px;
  pointer-events: none;
  animation: burst 1s ease-out forwards;
}
@keyframes burst {
  from { transform: translate(-50%, -50%) scale(.4); opacity: 1; }
  to { transform: translate(calc(-50% + var(--tx)), calc(-50% + var(--ty))) scale(1.15) rotate(var(--r)); opacity: 0; }
}

.note-card {
  position: relative;
  width: 100%;
  padding: 24px 20px 16px;
  background: #fff;
  border: 3px solid var(--pink-100);
  border-radius: var(--r);
  text-align: center;
  box-shadow: var(--shadow);
}
.note-card::before {
  content: "";
  position: absolute;
  top: -13px; left: 50%;
  width: 96px; height: 26px;
  transform: translateX(-50%) rotate(-3deg);
  background: repeating-linear-gradient(45deg, rgba(255, 163, 196, .75) 0 8px, rgba(255, 201, 220, .75) 8px 16px);
  border-radius: 4px;
}
.note-card.pop-in { animation: popIn .45s cubic-bezier(.3, 1.5, .5, 1); }
.note-emoji { font-size: 2.8rem; line-height: 1; display: inline-block; animation: wiggle 2.4s ease-in-out infinite; }
.note-card h3 { margin: 8px 0 6px; font-family: "Fredoka", "Jua", sans-serif; font-weight: 600; font-size: 1.4rem; color: var(--berry); }
.note-card p { margin: 0; font-size: 1.08rem; line-height: 1.5; }
.note-card .sign { margin-top: 8px; text-align: right; font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.45rem; color: var(--pink-500); }
.dots { display: flex; justify-content: center; gap: 6px; margin-top: 10px; }
.dots span { width: 8px; height: 8px; border-radius: 999px; background: var(--pink-200); transition: width .25s, background .25s; }
.dots span.on { width: 20px; background: var(--pink-500); }

.missions {
  width: 100%;
  padding: 18px;
  background: rgba(255, 255, 255, .75);
  border: 2px dashed var(--pink-300);
  border-radius: var(--r);
}
.missions h3 { margin: 0 0 12px; font-family: "Fredoka", "Jua", sans-serif; font-weight: 600; font-size: 1.2rem; color: var(--berry); }
.missions ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.missions label {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 14px;
  background: #fff;
  border-radius: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.missions li.done label { background: var(--pink-50); color: var(--ink-soft); text-decoration: line-through; text-decoration-color: var(--pink-400); }
.missions input {
  appearance: none; -webkit-appearance: none;
  flex-shrink: 0;
  width: 26px; height: 26px; margin: 0;
  border: 2px solid var(--pink-300);
  border-radius: 9px;
  display: grid; place-items: center;
  cursor: pointer;
  transition: background .2s, transform .2s;
}
.missions input:checked { background: var(--pink-500); border-color: var(--pink-500); transform: rotate(-8deg) scale(1.08); }
.missions input:checked::after { content: "♥"; color: #fff; font-size: 15px; line-height: 1; }
.missions input:focus-visible { outline: 3px solid var(--pink-300); outline-offset: 2px; }
.mission-done { margin: 14px 0 0; text-align: center; font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.5rem; color: var(--berry); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* =========================================================
   Mailbox (top-right)
   ========================================================= */
.hello { flex: 1; min-width: 0; }
.mailbox-btn {
  position: relative;
  flex-shrink: 0;
  width: 84px; height: 76px;
  margin-top: -6px;
  padding: 0; border: none; background: none; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.mailbox-btn:focus-visible { outline: 3px dashed var(--pink-400); outline-offset: 4px; border-radius: 16px; }
.mailbox { width: 100%; height: 100%; overflow: visible; filter: drop-shadow(0 8px 10px rgba(194, 54, 107, .3)); }
.mailbox-btn:hover .mailbox { transform: translateY(-2px); }
.mb-flag { transform-box: view-box; transform-origin: 96px 62px; transform: rotate(90deg); transition: transform .6s cubic-bezier(.3, 1.6, .5, 1); }
.mailbox-btn.has-mail .mb-flag { transform: rotate(0); }
.mailbox-btn.has-mail .mailbox { animation: mailWiggle 3s ease-in-out infinite; }
@keyframes mailWiggle {
  0%, 70%, 100% { transform: rotate(0); }
  75% { transform: rotate(-7deg); }
  80% { transform: rotate(6deg); }
  85% { transform: rotate(-4deg); }
  90% { transform: rotate(2deg); }
}
.mb-door { transform-box: view-box; transform-origin: 32px 64px; transition: transform .45s cubic-bezier(.5, 0, .3, 1.3); }
.mb-letters { transition: transform .5s .2s cubic-bezier(.3, 1.6, .5, 1); }
.mailbox-btn.opening .mb-door { transform: scaleY(.12); }
.mailbox-btn.opening .mb-letters { transform: translateY(-18px) rotate(-6deg); }

.mail-badge {
  position: absolute; top: -2px; right: 0;
  min-width: 24px; height: 24px; padding: 0 6px;
  display: grid; place-items: center;
  border-radius: 999px;
  background: var(--pink-500);
  border: 2px solid #fff;
  color: #fff; font: 800 .8rem "Nunito", "Gowun Dodum", sans-serif;
  box-shadow: 0 4px 10px rgba(239, 79, 134, .45);
  animation: popIn .5s cubic-bezier(.3, 1.8, .5, 1);
}
.mail-bubble {
  position: absolute; top: calc(100% + 4px); right: -4px;
  white-space: nowrap;
  padding: 6px 12px;
  background: #fff;
  border: 2px solid var(--pink-200);
  border-radius: 14px;
  font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.25rem; color: var(--berry);
  box-shadow: var(--shadow);
  animation: bubbleIn .5s cubic-bezier(.3, 1.6, .5, 1), bubbleBob 1.6s ease-in-out .5s infinite;
  z-index: 3;
}
.mail-bubble::before {
  content: ""; position: absolute; top: -8px; right: 32px;
  border: 7px solid transparent; border-bottom-color: var(--pink-200); border-top: 0;
}
@keyframes bubbleIn { from { opacity: 0; transform: translateY(-6px) scale(.7); } }
@keyframes bubbleBob { 50% { transform: translateY(-4px); } }

/* =========================================================
   Overlays shared
   ========================================================= */
.overlay {
  position: fixed; inset: 0; z-index: 30;
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  background: rgba(255, 206, 225, .6);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  animation: fade .25s ease;
  overflow-y: auto;
}
.overlay.closing { animation: fadeOut .25s ease forwards; }
@keyframes fadeOut { to { opacity: 0; } }
.x-btn {
  position: absolute; top: 10px; right: 10px; z-index: 2;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 2px solid var(--pink-200);
  background: #fff;
  color: var(--berry);
  font: 800 1rem "Nunito", "Gowun Dodum", sans-serif;
  cursor: pointer;
  transition: transform .2s;
}
.x-btn:hover { transform: rotate(90deg); }

/* =========================================================
   Mailbox panel + envelopes
   ========================================================= */
.mail-panel {
  position: relative;
  width: 100%; max-width: 520px;
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  padding: 22px 18px 24px;
  background: var(--pink-50);
  background-image: radial-gradient(#ffd6e5 1.4px, transparent 1.4px);
  background-size: 18px 18px;
  border: 3px solid #fff;
  border-radius: 30px;
  box-shadow: 0 24px 60px -20px rgba(194, 54, 107, .6);
  animation: panelIn .5s cubic-bezier(.3, 1.4, .5, 1);
  transform-origin: top right;
}
@keyframes panelIn { from { opacity: 0; transform: scale(.4) translate(30%, -30%); } }
.mail-head h2 { margin: 0; font-family: "Fredoka", "Jua", sans-serif; font-weight: 600; color: var(--berry); font-size: 1.5rem; }
.mail-sub { margin: 4px 0 18px; color: var(--ink-soft); font-weight: 700; }
.mail-empty { text-align: center; font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.5rem; color: var(--berry); margin: 30px 0 20px; }

.env-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 14px; }
@media (min-width: 480px) { .env-grid { grid-template-columns: repeat(3, 1fr); } }

.env {
  --env: #ffe4ee;
  --env-dark: #ffc9dc;
  position: relative;
  aspect-ratio: 4 / 3.1;
  padding: 0; border: none; background: none; cursor: pointer;
  perspective: 600px;
  animation: envIn .6s cubic-bezier(.3, 1.4, .5, 1) both;
  animation-delay: calc(var(--i) * 70ms + 120ms);
  -webkit-tap-highlight-color: transparent;
}
.env:nth-child(3n+2) { --env: #fff1d6; --env-dark: #ffdca3; }
.env:nth-child(3n+3) { --env: #e6f4ff; --env-dark: #bfe0fb; }
@keyframes envIn { from { opacity: 0; transform: translate(60px, -120px) scale(.3) rotate(25deg); } }
.env:hover .env-body { transform: translateY(-4px) rotate(-1.5deg); }
.env:focus-visible { outline: 3px dashed var(--pink-400); outline-offset: 4px; border-radius: 10px; }

.env-body {
  position: absolute; inset: 0;
  border-radius: 10px;
  background: var(--env);
  box-shadow: 0 8px 16px -8px rgba(194, 54, 107, .5);
  transition: transform .25s;
  transform-style: preserve-3d;
}
.env-card {
  position: absolute; left: 8%; right: 8%; top: 10%; height: 75%;
  background: #fff;
  border-radius: 6px;
  display: grid; place-items: center;
  font-size: 1.8rem;
  transition: transform .5s .25s cubic-bezier(.3, 1.4, .5, 1);
}
.env-pocket {
  position: absolute; inset: 0;
  border-radius: 10px;
  background: var(--env);
  clip-path: polygon(0 30%, 50% 62%, 100% 30%, 100% 100%, 0 100%);
  display: flex; flex-direction: column; justify-content: flex-end; align-items: center;
  padding: 0 6px 8px;
}
.env-pocket::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(160deg, transparent 50%, var(--env-dark) 50.5%, transparent 51.5%),
              linear-gradient(200deg, transparent 50%, var(--env-dark) 50.5%, transparent 51.5%);
  opacity: .6;
}
.env-title {
  position: relative;
  font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.15rem; line-height: 1.05;
  color: var(--ink);
  max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.env-date { position: relative; font-size: .72rem; font-weight: 800; color: var(--ink-soft); }
.env-flap {
  position: absolute; left: 0; right: 0; top: 0; height: 62%;
  background: var(--env-dark);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  border-radius: 10px 10px 0 0;
  transform-origin: top center;
  transition: transform .45s cubic-bezier(.5, 0, .3, 1);
  backface-visibility: hidden;
}
.env-seal {
  position: absolute; left: 50%; top: 50%;
  width: 30px; height: 30px; margin: -22px 0 0 -15px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #ff8fb5, #c2366b);
  color: #fff; font-size: .95rem;
  box-shadow: 0 2px 0 rgba(0, 0, 0, .12), inset 0 0 0 3px rgba(255, 255, 255, .25);
  transition: opacity .2s, transform .3s;
}
.env-sticker { position: absolute; top: -10px; left: -8px; font-size: 1.6rem; transform: rotate(-14deg); filter: drop-shadow(0 2px 2px rgba(0,0,0,.15)); }
.env-new {
  position: absolute; top: -9px; right: -8px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--pink-500);
  color: #fff; font: 800 .7rem "Nunito", "Gowun Dodum", sans-serif; letter-spacing: .06em;
  border: 2px solid #fff;
  animation: newPulse 1.4s ease-in-out infinite;
}
@keyframes newPulse { 50% { transform: scale(1.12) rotate(6deg); } }

.env.opening .env-flap { transform: rotateX(180deg); }
.env.opening .env-seal { opacity: 0; transform: scale(.4); }
.env.opening .env-card { transform: translateY(-38%); }

/* =========================================================
   Viewer (polaroid / video / note)
   ========================================================= */
.viewer { background: rgba(90, 42, 61, .55); }
.viewer-stage {
  width: 100%; max-width: 460px;
  margin: auto;
  animation: viewerIn .55s cubic-bezier(.3, 1.4, .5, 1);
}
@keyframes viewerIn { from { opacity: 0; transform: scale(.5) rotate(-8deg); } }
.viewer-x { position: fixed; top: 14px; right: 14px; }

.polaroid, .tv {
  position: relative;
  margin: 18px auto 0;
  background: #fff;
  padding: 14px 14px 18px;
  border-radius: 6px;
  box-shadow: 0 24px 50px -16px rgba(0, 0, 0, .45);
  transform: rotate(-2deg);
}
.tv { transform: rotate(1deg); border-radius: 22px; background: #fff6fa; border: 3px solid var(--pink-200); }
.tape {
  position: absolute; top: -14px; left: 50%;
  width: 110px; height: 28px;
  transform: translateX(-50%) rotate(3deg);
  background: repeating-linear-gradient(45deg, rgba(255, 163, 196, .8) 0 8px, rgba(255, 214, 229, .8) 8px 16px);
  border-radius: 3px;
}
.polaroid img, .tv video {
  display: block; width: 100%;
  max-height: 62vh; object-fit: contain;
  background: var(--pink-50) linear-gradient(90deg, var(--pink-50), #fff, var(--pink-50)) 0 0 / 200% 100%;
  animation: shimmer 1.2s linear infinite;
  border-radius: 3px;
  min-height: 160px;
}
.polaroid img.loaded, .tv video.loaded { animation: none; background: #000; min-height: 0; }
.polaroid img.loaded { background: none; }
.tv video { border-radius: 14px; background: #2a1720; }
@keyframes shimmer { to { background-position: -200% 0; } }
.polaroid figcaption, .tv figcaption {
  margin-top: 12px;
  text-align: center;
  font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.6rem; line-height: 1.15; color: var(--ink);
}
.viewer-meta {
  margin: 16px 0 0; text-align: center;
  font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.4rem; color: #fff;
  text-shadow: 0 2px 6px rgba(0, 0, 0, .3);
}

.letter-paper {
  position: relative;
  margin-top: 18px;
  padding: 34px 26px 26px 48px;
  background:
    linear-gradient(90deg, transparent 34px, #ffb3c9 34px, #ffb3c9 36px, transparent 36px),
    repeating-linear-gradient(#fffdf8 0 31px, #cfe2f6 31px 32px);
  border-radius: 6px;
  box-shadow: 0 24px 50px -16px rgba(0, 0, 0, .45);
  transform: rotate(1deg);
  font-family: "Caveat", "Nanum Pen Script", cursive;
  font-size: 1.55rem; line-height: 32px;
  color: var(--ink);
}
.letter-paper h3 { margin: 0 0 0; font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.9rem; line-height: 32px; color: var(--berry); }
.letter-paper p { margin: 0; white-space: pre-wrap; }
.letter-paper .sign { text-align: right; color: var(--pink-500); }

/* hearts confetti */
.burst.fixed { position: fixed; z-index: 60; }

.btn-small { font-size: 1.05rem; padding: 12px 24px; }

.lock-bottom { margin-top: 6px; }

/* =========================================================
   Notebook
   ========================================================= */
.notebook {
  position: relative;
  width: 100%; max-width: 480px;
  margin: auto;
  padding-top: 22px;
  animation: notebookIn .55s cubic-bezier(.3, 1.4, .5, 1);
  transform-origin: bottom center;
}
@keyframes notebookIn { from { opacity: 0; transform: translateY(80px) rotate(4deg) scale(.8); } }
.spiral {
  position: absolute; top: 4px; left: 24px; right: 24px; height: 36px; z-index: 2;
  background:
    radial-gradient(circle at 50% 70%, #d7c7d0 0 5px, transparent 5.5px) 0 0 / 30px 36px repeat-x,
    linear-gradient(transparent 0 0);
  pointer-events: none;
}
.spiral::before {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(90deg, transparent 0 11px, #b4a1ad 11px 15px, transparent 15px 30px);
  mask: linear-gradient(#000 0 60%, transparent 60%);
  -webkit-mask: linear-gradient(#000 0 60%, transparent 60%);
  border-radius: 4px;
}
.notebook .x-btn { top: 34px; right: 12px; }
.paper {
  position: relative;
  padding: 34px 20px 18px 54px;
  background:
    linear-gradient(90deg, transparent 40px, #ffb3c9 40px, #ffb3c9 42px, transparent 42px),
    repeating-linear-gradient(#fffdf8 0 31px, #cfe2f6 31px 32px);
  background-position: 0 2px;
  border-radius: 14px;
  box-shadow: 0 30px 60px -20px rgba(194, 54, 107, .6), inset 0 0 0 1px #f3e3da;
  transition: transform .5s cubic-bezier(.6, 0, .3, 1), opacity .4s;
}
.paper.folding { transform: perspective(800px) rotateX(70deg) scale(.25) translateY(-200px); opacity: 0; }
.nb-date { margin: 0; font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.35rem; line-height: 32px; color: var(--ink-soft); text-align: right; padding-right: 36px; }
.moods { display: flex; flex-wrap: wrap; align-items: center; gap: 2px 4px; min-height: 32px; }
.moods-label { font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.35rem; color: var(--ink-soft); margin-right: 4px; }
.mood {
  width: 34px; height: 30px;
  border: none; background: none; cursor: pointer;
  font-size: 1.3rem;
  border-radius: 10px;
  filter: grayscale(.6); opacity: .7;
  transition: transform .2s, filter .2s, opacity .2s;
}
.mood:hover { opacity: 1; filter: none; }
.mood.on { filter: none; opacity: 1; transform: scale(1.3) rotate(-8deg); background: rgba(255, 163, 196, .35); }
.nb-dear { margin: 0; font-family: "Caveat", "Nanum Pen Script", cursive; font-weight: 700; font-size: 1.7rem; line-height: 32px; color: var(--berry); }
#nbText {
  display: block; width: 100%;
  min-height: 256px; max-height: 50vh;
  margin: 0; padding: 0;
  border: none; outline: none; resize: vertical;
  background: transparent;
  font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.5rem; line-height: 32px;
  color: #3a2a8a;
}
#nbText::placeholder { color: #b7a7c4; }
.nb-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 10px; }
.nb-count { font-size: .8rem; font-weight: 800; color: var(--ink-soft); }

.toast {
  position: fixed; left: 50%; bottom: 26px; z-index: 70;
  transform: translateX(-50%);
  padding: 12px 20px;
  background: #fff;
  border: 2px solid var(--pink-200);
  border-radius: 999px;
  box-shadow: var(--shadow);
  font-weight: 800; color: var(--berry);
  animation: toastIn .45s cubic-bezier(.3, 1.6, .5, 1);
  white-space: nowrap;
}
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 20px) scale(.8); } }

/* auto mission ("Write your diary") */
.missions li.auto label { background: linear-gradient(90deg, #fff, var(--pink-50)); }
.auto-hint {
  margin-left: auto;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--pink-100);
  color: var(--berry);
  font-size: .72rem; font-weight: 800;
  text-decoration: none;
  animation: newPulse 1.6s ease-in-out infinite;
}
.nb-count { white-space: nowrap; }
.nb-foot .btn { white-space: nowrap; padding: 12px 22px; font-size: 1.05rem; }

/* =========================================================
   Korean under/next to the English (her view only)
   ========================================================= */
.ko {
  display: block;
  margin-top: 2px;
  font-size: .82em;
  font-weight: inherit;
  opacity: .78;
  letter-spacing: 0;
}
/* on buttons, chips and short labels the Korean sits beside the English */
.btn .ko, .chip .ko, .intro-skip .ko, .intro-replay .ko, .mail-bubble .ko,
.auto-hint .ko, .jnav-mid .ko, .jedit .ko, .pill .ko {
  display: inline;
  margin: 0 0 0 6px;
  font-size: .86em;
}
.btn .ko::before, .chip .ko::before, .intro-skip .ko::before, .intro-replay .ko::before,
.mail-bubble .ko::before, .jnav-mid .ko::before, .jedit .ko::before { content: "· "; opacity: .7; }
.letter-title .ko { font-size: .72em; margin-top: 4px; color: var(--ink-soft); }
.tap-hint .ko, .hint .ko { font-size: .8em; }
.mission-done .ko { font-size: .85em; }
#greeting .ko { font-size: .62em; margin-top: 4px; opacity: .75; }
.note-card h3 .ko { font-size: .7em; margin-top: 3px; }
.note-card p.ko-text { margin-top: 6px; font-size: .95rem; opacity: .8; }
.m-words { display: flex; flex-direction: column; min-width: 0; }
.missions label .ko { display: block; margin-top: 1px; font-size: .82em; opacity: .65; font-weight: 700; }
.auto-hint { white-space: nowrap; }
.missions li.done label .ko { text-decoration: inherit; }

/* =========================================================
   Live messages from Duk (chat bubbles at the top)
   ========================================================= */
.live-zone { width: 100%; display: grid; gap: 10px; }
.live-bubble {
  display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; align-items: start;
  padding: 12px 14px;
  background: #fff;
  border: 2px solid var(--pink-200);
  border-radius: 20px 20px 20px 6px;
  box-shadow: var(--shadow);
  animation: bubbleIn .5s cubic-bezier(.3, 1.6, .5, 1);
  transition: transform .35s, opacity .35s;
}
.live-bubble.bye { transform: scale(.85) translateY(-8px); opacity: 0; }
.live-from {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--pink-50);
  font-size: 1.3rem;
  animation: wiggle 2.4s ease-in-out infinite;
}
.live-body { min-width: 0; }
.live-text { margin: 0; font-family: "Caveat", "Nanum Pen Script", cursive; font-size: 1.55rem; line-height: 1.15; color: var(--berry); overflow-wrap: anywhere; }
.live-meta { margin: 3px 0 0; font-size: .78rem; font-weight: 800; color: var(--ink-soft); }
.live-ok {
  grid-column: 2; justify-self: start;
  margin-top: 6px;
  padding: 6px 14px;
  border: 2px solid var(--pink-200);
  border-radius: 999px;
  background: var(--pink-50);
  color: var(--berry);
  font: 800 .85rem "Nunito", "Gowun Dodum", sans-serif;
  cursor: pointer;
}
.live-ok:hover { background: var(--pink-100); }
.live-ok .ko { display: inline; margin-left: 6px; font-size: .9em; }
.live-ok .ko::before { content: "· "; opacity: .7; }

/* =========================================================
   Turn on notifications card
   ========================================================= */
.notif-card {
  width: 100%;
  display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: start;
  padding: 16px;
  background: linear-gradient(135deg, #fff, var(--pink-50));
  border: 2px dashed var(--pink-300);
  border-radius: var(--r);
}
.notif-bell { font-size: 2rem; display: inline-block; transform-origin: top center; animation: ring 2.6s ease-in-out infinite; }
@keyframes ring { 0%, 70%, 100% { transform: rotate(0); } 75% { transform: rotate(16deg); } 80% { transform: rotate(-14deg); } 85% { transform: rotate(10deg); } 90% { transform: rotate(-6deg); } }
.notif-copy h3 { margin: 0; font-family: "Fredoka", "Jua", sans-serif; font-weight: 600; font-size: 1.1rem; color: var(--berry); }
.notif-copy p { margin: 4px 0 0; font-weight: 700; font-size: .92rem; color: var(--ink-soft); }
.notif-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 10px; }
.notif-actions .btn-small { padding: 10px 18px; font-size: 1rem; }
.notif-later { margin: 0; font-size: .85rem; }