:root {
  --peri: #CCCCFF;
  --rose: #9a9aeb;
  --berry: #5b5bb8;
  --ink: #34385a;
  --navy: #2b3a4a;
  --cream: #f6f6ff;
  --paper: #fcfcff;
  --ice: #d7ecf8;
  --gold: #e8b86d;
  --shadow: rgba(91, 91, 184, 0.18);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: "Nunito", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, #CCCCFF 0, transparent 36%),
    radial-gradient(circle at 88% 12%, #d9eefc 0, transparent 34%),
    radial-gradient(circle at 50% 100%, var(--peri) 0, var(--cream) 52%);
  overflow-x: hidden;
}

.hearts {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.heart {
  position: absolute;
  color: var(--rose);
  opacity: 0.35;
  animation: float-up linear infinite;
  font-size: 1.1rem;
}

@keyframes float-up {
  0% {
    transform: translateY(110vh) rotate(0deg);
    opacity: 0;
  }
  12% {
    opacity: 0.4;
  }
  100% {
    transform: translateY(-12vh) rotate(28deg);
    opacity: 0;
  }
}

.nav {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 6vw;
}

.logo {
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--berry);
}

.nav-links {
  display: flex;
  gap: 0.6rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  font-size: 0.92rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(143, 143, 224, 0.4);
}

.nav-links a.active,
.nav-links a:hover {
  background: #fff;
  color: var(--berry);
}

.page {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 0 auto;
  padding: 0.5rem 6vw 4rem;
}

.hero {
  text-align: center;
  padding: 1.4rem 0 2rem;
}

.eyebrow {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--berry);
}

h1 {
  font-family: "Fraunces", serif;
  font-size: clamp(2.5rem, 8vw, 4.8rem);
  font-weight: 600;
  line-height: 1.05;
  margin: 0.45rem 0 0.7rem;
}

.pet-name {
  font-style: italic;
  color: var(--berry);
}

.lead {
  font-size: 1.12rem;
  max-width: 34rem;
  margin: 0 auto 1.6rem;
  line-height: 1.55;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: center;
}

.btn {
  appearance: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: inherit;
  font-weight: 800;
  font-size: 1rem;
  padding: 0.85rem 1.25rem;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(180deg, #a5a5ee, #6f6fd3);
  box-shadow: 0 10px 22px var(--shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px var(--shadow);
}

.btn.secondary {
  background: #fff;
  color: var(--berry);
  border: 1px solid rgba(143, 143, 224, 0.5);
}

.btn.playing {
  animation: pulse 1.1s ease-in-out infinite;
}

@keyframes pulse {
  50% {
    transform: scale(1.04);
  }
}

.letter-scene {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 1.6rem auto 0;
  max-width: 44rem;
}

.mail-row {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 0.15rem;
  width: 100%;
}

.penguin {
  width: 88px;
  flex-shrink: 0;
  filter: drop-shadow(0 10px 10px rgba(43, 58, 74, 0.16));
  animation: waddle 2.6s ease-in-out infinite;
}

@keyframes waddle {
  0%,
  100% {
    transform: rotate(-3deg) translateY(0);
  }
  50% {
    transform: rotate(4deg) translateY(-6px);
  }
}

.penguin--right {
  animation-name: waddle-flip;
}

@keyframes waddle-flip {
  0%,
  100% {
    transform: scaleX(-1) rotate(-3deg) translateY(0);
  }
  50% {
    transform: scaleX(-1) rotate(4deg) translateY(-6px);
  }
}

.letter-sheet {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 11;
  width: min(92vw, 40rem);
  max-height: calc(100dvh - 3rem);
  overflow-y: auto;
  padding: 1.8rem 2.2rem 2.4rem;
  background: var(--paper);
  border-radius: 0.9rem;
  text-align: left;
  box-shadow: 0 24px 60px var(--shadow);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, -46%) scale(0.96);
  transition: opacity 0.35s ease, transform 0.45s ease, visibility 0.45s;
}

.open .letter-sheet {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.letter-scene::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 10;
  background: rgba(52, 56, 90, 0.35);
  backdrop-filter: blur(3px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.open::before {
  opacity: 1;
  pointer-events: auto;
}

.letter-close {
  display: block;
  position: sticky;
  top: 0;
  margin: -0.6rem -0.9rem 0 auto;
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid rgba(143, 143, 224, 0.45);
  border-radius: 50%;
  background: #fff;
  color: var(--berry);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
}

.letter-sheet h2 {
  font-size: 2.4rem;
}

.letter-sheet p {
  font-size: 1.1rem;
}

.envelope {
  position: relative;
  width: min(100%, 22rem);
  height: 14.5rem;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  z-index: 3;
}

.envelope-body {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #e3e3ff, #c2c2f4);
  border-radius: 0.55rem 0.55rem 1rem 1rem;
  box-shadow: 0 18px 36px var(--shadow);
}

.envelope-pocket {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #ececff, #b9b9f0);
  clip-path: polygon(0 0, 50% 58%, 100% 0, 100% 100%, 0 100%);
  border-radius: 0 0 1rem 1rem;
  z-index: 4;
  transition: opacity 0.4s ease;
}

.envelope-flap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 58%;
  background: linear-gradient(180deg, #f7f7ff, #d0d0fa);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  z-index: 6;
  filter: drop-shadow(0 6px 10px rgba(51, 51, 100, 0.14));
  transition: opacity 0.35s ease, transform 0.45s ease;
}

.open .envelope-flap,
.open .envelope-pocket {
  opacity: 0;
}

.open .envelope-flap {
  transform: translateY(-12px);
}

.seal {
  position: absolute;
  left: 50%;
  top: 46%;
  z-index: 7;
  width: 2.5rem;
  height: 2.5rem;
  margin-left: -1.25rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  background: radial-gradient(circle at 35% 30%, #a3a3f0, #6464c8);
  box-shadow: 0 6px 12px rgba(100, 100, 200, 0.35);
  font-size: 1.15rem;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.click-me {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 1.35rem;
  z-index: 7;
  font-family: "Caveat", cursive;
  font-size: 2rem;
  color: var(--berry);
  pointer-events: none;
}

.open .seal,
.open .click-me {
  opacity: 0;
  transform: scale(0.7);
  pointer-events: none;
}

.signoff {
  font-family: "Caveat", cursive;
  font-size: 1.7rem;
  color: var(--berry);
}

.cake {
  font-size: 2.4rem;
  margin-bottom: 0.4rem;
}

.memories-header {
  text-align: center;
  margin-bottom: 1.4rem;
}

.slideshow {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
}

.frame {
  background: #fff;
  padding: 0.85rem 0.85rem 1rem;
  border-radius: 0.35rem 0.35rem 0.9rem 0.9rem;
  box-shadow: 0 18px 40px var(--shadow);
  display: flex;
  flex-direction: column;
}

.frame img {
  width: 100%;
  height: auto;
  max-height: 50vh;
  object-fit: contain;
  border-radius: 0.25rem;
  display: block;
}

.slide-body {
  flex: 1;
  display: grid;
  place-items: center;
  min-height: 260px;
}

.caption {
  text-align: center;
  font-family: "Caveat", cursive;
  font-size: 1.55rem;
  color: var(--ink);
  margin-top: 0.7rem;
}

.empty {
  text-align: center;
  padding: 2.2rem 1rem;
}

.empty code {
  background: #e8e8ff;
  padding: 0.1rem 0.4rem;
  border-radius: 0.4rem;
}
.controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 1.1rem;
}

.icon-btn {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  border: 1px solid rgba(143, 143, 224, 0.45);
  background: #fff;
  color: var(--berry);
  font-size: 1.2rem;
  cursor: pointer;
}

.dots {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  justify-content: center;
}

.dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  border: none;
  background: #d2d2f7;
  cursor: pointer;
}

.dot.active {
  background: var(--berry);
  transform: scale(1.2);
}

.voice-status {
  min-height: 1.4rem;
  text-align: center;
  margin-top: 0.7rem;
  font-weight: 700;
  color: var(--berry);
}

.footer-note {
  text-align: center;
  margin-top: 2.4rem;
  opacity: 0.8;
  font-size: 0.92rem;
}

.photo-wrap {
  position: relative;
  display: grid;
  place-items: center;
}

.photo-wrap.is-loading {
  min-height: 260px;
}

.photo-wrap img {
  opacity: 1;
  transition: opacity 0.35s ease;
}

.photo-wrap.is-loading img {
  opacity: 0;
}

.loader {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.is-loading .loader {
  opacity: 1;
}

.spinner {
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 50%;
  border: 4px solid rgba(143, 143, 224, 0.3);
  border-top-color: var(--berry);
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.photo-error {
  display: none;
  font-family: "Caveat", cursive;
  font-size: 1.5rem;
  color: var(--berry);
}

.has-error .photo-error {
  display: block;
}

@media (max-width: 640px) {
  .photo-wrap.is-loading {
    min-height: 200px;
  }
}

@media (max-width: 640px) {
  .nav {
    padding: 0.9rem 1.1rem;
  }

  .page {
    padding: 0.4rem 1.1rem 3.2rem;
  }

  .penguin {
    width: 58px;
  }

  .open .letter-sheet {
    margin-bottom: -1.2rem;
    padding-bottom: 1.8rem;
  }

  .frame img {
    max-height: 60vh;
  }

  .frame img {
    height: 260px;
  }
}