:root {
  --pink-1: #f7d6e0;
  --pink-2: #fbe6ee;
  --pink-3: #f3a1bb;
  --pink-4: #f09ab6;
  --pink-5: #f6b0c6;
  --ink: #5a2d3a;
  --ink-soft: #7b4a5a;
  --cream: #fff8f3;
  --paper: #fffaf3;
  --shadow: 0 14px 30px rgba(90, 45, 58, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "Cormorant Garamond", Georgia, serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.55), transparent 40%),
    radial-gradient(circle at 90% 10%, rgba(255, 255, 255, 0.35), transparent 45%),
    linear-gradient(180deg, var(--pink-1) 0%, var(--pink-2) 55%, var(--pink-1) 100%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 1rem 1.5rem 0.75rem;
  text-align: center;
  background: rgba(247, 214, 224, 0.85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(243, 161, 187, 0.4);
}

.site-header h1 {
  margin: 0;
  font-family: "Great Vibes", "Brush Script MT", cursive;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: 0.04em;
  color: var(--ink);
}

.player {
  margin-top: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.player--hidden {
  display: none;
}

.icon-btn {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(90, 45, 58, 0.2);
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink);
  font-family: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.icon-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(90, 45, 58, 0.15);
}

.volume {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

#volume {
  width: 120px;
}

.slides {
  position: relative;
  flex: 1;
  overflow: hidden;
  padding: 1.5rem;
}

.slide {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 2.5rem 1.5rem;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.9s ease, transform 0.9s ease;
  pointer-events: none;
}

.slide.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.card {
  width: min(420px, 90vw);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(243, 161, 187, 0.45);
  border-radius: 24px;
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow);
  text-align: center;
  backdrop-filter: blur(10px);
}

.card h2 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: 1.6rem;
}

.card p {
  margin-top: 0;
  margin-bottom: 1.5rem;
  color: var(--ink-soft);
}

.puzzle-slide {
  padding: 1.5rem 1rem 2rem;
}

.puzzle-wrap {
  width: min(900px, 96vw);
  display: grid;
  gap: 1rem;
  justify-items: center;
  text-align: center;
}

.puzzle-header {
  display: grid;
  gap: 0.4rem;
}

.puzzle-header h2 {
  margin: 0;
}

.puzzle-header p {
  margin: 0;
  color: var(--ink-soft);
}

.puzzle-board {
  width: min(90vw, 720px);
  aspect-ratio: 5 / 4;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 6px;
  padding: 8px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow);
}

.puzzle-piece {
  border: none;
  padding: 0;
  border-radius: 12px;
  background-repeat: no-repeat;
  background-color: #fff;
  cursor: pointer;
  box-shadow: inset 0 0 0 1px rgba(90, 45, 58, 0.15);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.puzzle-piece:hover {
  transform: scale(1.02);
  box-shadow: inset 0 0 0 2px rgba(240, 154, 182, 0.6);
}

.puzzle-piece:focus-visible {
  outline: 3px solid rgba(90, 45, 58, 0.6);
  outline-offset: 2px;
}

.puzzle-piece.is-selected {
  outline: 3px solid rgba(240, 154, 182, 0.85);
  outline-offset: -3px;
}

.puzzle-hint {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.puzzle-complete {
  margin: 0;
  font-weight: 600;
  color: #a0435b;
}

.media-card {
  width: min(760px, 92vw);
  display: grid;
  gap: 1rem;
  justify-items: center;
}

.video {
  width: 100%;
  max-height: 55vh;
  border-radius: 16px;
  background: #12080b;
  box-shadow: 0 18px 30px rgba(90, 45, 58, 0.2);
}

.image-card {
  width: min(920px, 94vw);
  padding: 1.5rem;
  gap: 1.2rem;
}

.image-title {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

.image-subtitle {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--ink-soft);
}

.photo {
  width: 100%;
  max-height: 62vh;
  object-fit: contain;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 30px rgba(90, 45, 58, 0.18);
}

.slide-text {
  margin: 0 0 1.5rem;
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  line-height: 1.6;
  color: var(--ink);
}

.poem {
  margin: 0;
  white-space: pre-line;
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  line-height: 1.7;
  text-align: center;
  color: var(--ink);
}

.audio-card {
  display: grid;
  gap: 0.75rem;
  justify-items: center;
}

.music-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.65rem;
}

.volume-label {
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.ghost-btn {
  margin-top: 0.4rem;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  border: 1px solid rgba(90, 45, 58, 0.25);
  background: rgba(255, 255, 255, 0.6);
  color: var(--ink);
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ghost-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(90, 45, 58, 0.12);
}

.ghost-btn:focus-visible {
  outline: 2px solid rgba(90, 45, 58, 0.6);
  outline-offset: 3px;
}

#password {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  border: 1px solid rgba(90, 45, 58, 0.25);
  font-size: 1rem;
  font-family: inherit;
}

#password:focus {
  outline: 2px solid rgba(240, 154, 182, 0.6);
  outline-offset: 2px;
}

.primary-btn {
  margin-top: 1rem;
  padding: 0.75rem 1.6rem;
  border-radius: 999px;
  border: none;
  background: var(--pink-3);
  color: #fff;
  font-family: inherit;
  font-size: 1.05rem;
  cursor: pointer;
  box-shadow: 0 10px 18px rgba(90, 45, 58, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.primary-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.primary-btn:hover {
  transform: translateY(-1px);
  background: var(--pink-4);
}

.primary-btn:focus-visible,
.icon-btn:focus-visible {
  outline: 2px solid rgba(90, 45, 58, 0.6);
  outline-offset: 3px;
}

.error {
  min-height: 1.2rem;
  margin: 0.9rem 0 0;
  color: #a0435b;
  font-size: 0.95rem;
}

.error.success {
  color: #2d7a4e;
}

.envelope {
  position: relative;
  width: min(280px, 72vw);
  height: min(190px, 48vw);
  max-width: 320px;
  max-height: 210px;
  perspective: 900px;
}

.envelope-pocket {
  position: absolute;
  inset: 0;
  background: var(--pink-5);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
  z-index: 2;
}

.envelope-pocket::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--pink-3);
  clip-path: polygon(0 0, 50% 60%, 100% 0, 100% 100%, 0 100%);
  opacity: 0.95;
}

.envelope-pocket::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.35), transparent 60%);
  opacity: 0.5;
}

.envelope-letter {
  position: absolute;
  left: 10%;
  bottom: 8%;
  width: 80%;
  height: 80%;
  background: var(--cream);
  border-radius: 10px;
  box-shadow: 0 8px 16px rgba(90, 45, 58, 0.12);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 1.4rem;
  font-size: 1.1rem;
  color: #b0556b;
  transform: translateY(42%);
  transition: transform 1s ease;
  z-index: 1;
}

.envelope-letter span {
  font-family: "Great Vibes", "Brush Script MT", cursive;
  font-size: 1.4rem;
}

.envelope-label {
  position: absolute;
  left: 50%;
  top: 56%;
  transform: translate(-50%, -50%);
  font-family: "Great Vibes", "Brush Script MT", cursive;
  font-size: 1.4rem;
  color: #b0556b;
  z-index: 4;
  pointer-events: none;
  transition: opacity 0.6s ease;
}

.envelope-flap {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 56%;
  background: var(--pink-4);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  transform-origin: top center;
  transition: transform 1s ease;
  z-index: 3;
  box-shadow: 0 6px 10px rgba(90, 45, 58, 0.15);
}

.envelope.open .envelope-flap {
  transform: rotateX(-180deg);
}

.envelope.open .envelope-letter {
  transform: translateY(-6%);
}

.envelope.open .envelope-label {
  opacity: 0;
}

.letter {
  width: min(760px, 92vw);
  background: var(--paper);
  border-radius: 18px;
  padding: clamp(1.6rem, 3vw, 2.6rem);
  box-shadow: var(--shadow);
  position: relative;
  max-height: 72vh;
  overflow-y: auto;
}

.letter::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 18px;
  background:
    linear-gradient(transparent 93%, rgba(0, 0, 0, 0.03) 95%),
    radial-gradient(circle at 10% 10%, rgba(255, 255, 255, 0.6), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(0, 0, 0, 0.03), transparent 40%);
  pointer-events: none;
}

.letter-text {
  position: relative;
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  line-height: 1.65;
  color: var(--ink);
  white-space: pre-line;
  word-break: break-word;
  padding-bottom: 120px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (min-width: 720px) {
  .site-header {
    text-align: center;
  }

  .player {
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    margin-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}