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

:root {
  --cream: #fdf8f3;
  --paper: #faf5ef;
  --paper-envelope: #f5ebe3;
  --ink: #3d2c29;
  --ink-soft: #6b534e;
  --accent: #c97b84;
  --accent-light: #e8b4bc;
  --shadow: rgba(61, 44, 41, 0.08);
  --shadow-strong: rgba(61, 44, 41, 0.12);
  --envelope-border: rgba(61, 44, 41, 0.14);
}

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: 'Nunito', sans-serif;
  font-weight: 400;
  color: var(--ink);
  background: var(--cream);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% 0%, var(--accent-light) 0%, transparent 50%),
    radial-gradient(ellipse 80% 50% at 80% 90%, rgba(201, 123, 132, 0.15) 0%, transparent 50%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  overflow-x: hidden;
}

/* Плавающие сердечки на фоне */
.hearts {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.heart-float {
  position: absolute;
  font-size: 1rem;
  color: var(--accent);
  opacity: 0.25;
  animation: float 8s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.2; }
  50% { transform: translateY(-15px) scale(1.05); opacity: 0.35; }
}

/* Шаги */
.page {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
}

.step {
  display: none;
  width: 100%;
  animation: appear 0.6s ease-out;
}

.step.is-visible {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.step-2.is-visible {
  display: flex;
  padding: 1rem 0;
}

.step-3.is-visible {
  display: block;
  text-align: left;
}

/* Шаг 1: закрытый конверт */
.step-1 {
  padding: 1rem 0;
}

.closed-envelope {
  position: relative;
  width: 200px;
  height: 130px;
  margin-bottom: 2rem;
  filter: drop-shadow(0 8px 24px rgba(61, 44, 41, 0.18));
}

.closed-envelope-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(160deg, #faf2eb 0%, var(--paper-envelope) 50%, #ede0d4 100%);
  border: 1px solid var(--envelope-border);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  box-shadow:
    0 -2px 0 0 var(--envelope-border),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.closed-envelope-flap {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 100px solid transparent;
  border-right: 100px solid transparent;
  border-top: 55px solid #ede0d4;
  filter: drop-shadow(0 3px 10px rgba(61, 44, 41, 0.15));
  box-sizing: content-box;
}

.closed-envelope-flap::before {
  content: '♥';
  position: absolute;
  top: -48px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1.25rem;
  color: var(--accent);
  text-shadow: 0 1px 2px rgba(201, 123, 132, 0.4);
}

.step-1-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

.btn-next {
  font-family: 'Nunito', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--cream);
  background: var(--accent);
  border: none;
  border-radius: 999px;
  padding: 0.75rem 2rem;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(201, 123, 132, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-next:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(201, 123, 132, 0.45);
}

.btn-next:active {
  transform: translateY(0);
}

/* Шаг 2: Точно хочешь открыть? */
.step-2-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

.step-2-gifs {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.gif-btn {
  display: block;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.gif-btn:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 24px var(--shadow-strong);
}

.gif-btn .step-gif {
  display: block;
  width: 140px;
  height: auto;
  max-height: 160px;
  object-fit: cover;
  vertical-align: middle;
}

.step-2-no-reaction {
  margin-top: 0.5rem;
  text-align: center;
}

.step-2-no-reaction.is-hidden {
  display: none;
}

.step-2-no-reaction .step-gif--reaction {
  max-width: 280px;
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 24px var(--shadow-strong);
}

.btn-try-again {
  display: block;
  margin: 1.25rem auto 0;
  font-family: 'Nunito', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
  background: transparent;
  border: 2px solid var(--accent);
  border-radius: 999px;
  padding: 0.6rem 1.5rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.btn-try-again:hover {
  background: var(--accent);
  color: var(--cream);
  transform: translateY(-1px);
}

.step-2-gifs.is-hidden {
  display: none;
}

/* Кнопка «Свернуть в конверт» (шаг 3) */
.letter-back-wrap {
  text-align: center;
  margin-top: 1.25rem;
  margin-bottom: 0;
}

.btn-back {
  font-family: 'Nunito', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink-soft);
  background: none;
  border: none;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.btn-back:hover {
  color: var(--accent);
}

/* Конверт и письмо (шаг 3) */
.envelope {
  position: relative;
  background: var(--paper);
  border-radius: 12px;
  box-shadow: 0 20px 60px var(--shadow), 0 4px 20px var(--shadow-strong);
  padding: 2rem;
  animation: appear 1s ease-out;
}

@keyframes appear {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.envelope-flap {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 220px solid transparent;
  border-right: 220px solid transparent;
  border-top: 40px solid rgba(250, 245, 239, 0.6);
  pointer-events: none;
}

.letter {
  position: relative;
}

.letter-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.label {
  display: inline-block;
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.9rem;
  font-style: italic;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: lowercase;
  margin-bottom: 0.5rem;
}

.letter-header h1 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}

/* Блок под фото */
.photo-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--accent-light) 0%, rgba(232, 180, 188, 0.3) 100%);
  border-radius: 12px;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  font-size: 0.95rem;
  overflow: hidden;
  position: relative;
}

.photo-placeholder.has-photo {
  background: none;
  padding: 0;
}

.photo-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
}

.photo-placeholder .hint {
  font-size: 0.75rem;
  margin-top: 0.5rem;
  opacity: 0.8;
}

/* Текст письма */
.message {
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
}

.message p {
  margin-bottom: 1rem;
}

.message p:last-of-type {
  margin-bottom: 0;
}

.signature {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 1.15rem;
  color: var(--ink);
  margin-top: 1rem;
}

.signature-date {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin-top: 0.35rem;
  margin-bottom: 0;
}

.letter-footer {
  position: relative;
  text-align: center;
}

.letter-footer .heart {
  display: inline-block;
  font-size: 1.5rem;
  color: var(--accent);
  animation: pulse 1.5s ease-in-out infinite;
}

.letter-footer .heart--easter {
  cursor: pointer;
}

.heart-easter-popup {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.5rem);
  transform: translateX(-50%);
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem;
  font-style: italic;
  color: var(--accent);
  white-space: nowrap;
  opacity: 1;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.heart-easter-popup.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.letter-opens {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--ink-soft);
  opacity: 0.85;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.85; }
}

/* Адаптив */
@media (max-width: 480px) {
  html {
    font-size: 16px;
  }

  .envelope {
    padding: 1.5rem;
  }

  .letter-header h1 {
    font-size: 1.65rem;
  }

  .envelope-flap {
    border-left-width: 180px;
    border-right-width: 180px;
  }

  .closed-envelope {
    width: 160px;
    height: 110px;
    margin-bottom: 1.5rem;
  }

  .closed-envelope-body {
    height: 80px;
  }

  .closed-envelope-flap {
    border-left-width: 80px;
    border-right-width: 80px;
    border-top-width: 45px;
  }

  .step-1-text {
    font-size: 1.35rem;
  }
}