:root {
  --primary-pink: #ff4b72;
  --secondary-pink: #ff758c;
  --accent-purple: #7928ca;
  --bg-gradient: linear-gradient(135deg, #0f0c1b 0%, #22122b 50%, #15091e 100%);
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-border: rgba(255, 255, 255, 0.12);
  --card-hover-border: rgba(255, 75, 114, 0.5);
  --text-main: #ffffff;
  --text-muted: #d4c7d9;
  --glow-shadow: 0 8px 32px 0 rgba(255, 75, 114, 0.25);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Montserrat', sans-serif;
  background: var(--bg-gradient);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  line-height: 1.6;
}

#petals-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, #ff4b72, #ff758c, #a855f7);
  width: 0%;
  z-index: 999;
  transition: width 0.1s ease;
}

.top-nav {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: rgba(15, 12, 27, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 100;
  border-bottom: 1px solid var(--card-border);
}

.logo {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
}

.recipient-name {
  color: var(--secondary-pink);
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 1.25rem;
}

.nav-controls {
  display: flex;
  gap: 10px;
}

.icon-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 6px;
}

.icon-btn:hover, .icon-btn:active {
  background: rgba(255, 75, 114, 0.2);
  border-color: var(--primary-pink);
  transform: translateY(-1px);
}

.content-wrapper {
  position: relative;
  z-index: 10;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 20px 60px;
}

.hero-section {
  min-height: calc(85vh - 70px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 40px 10px;
}

.badge-pill {
  display: inline-block;
  background: rgba(255, 75, 114, 0.15);
  color: #ff94ab;
  border: 1px solid rgba(255, 75, 114, 0.3);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  line-height: 1.2;
  margin-bottom: 20px;
  font-weight: 700;
}

.gradient-text {
  background: linear-gradient(135deg, #ff758c 0%, #ff4b72 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-muted);
  max-width: 650px;
  margin-bottom: 36px;
  font-weight: 300;
}

.interactive-envelope-container {
  margin: 20px 0;
  perspective: 1000px;
}

.envelope {
  position: relative;
  width: 260px;
  height: 170px;
  background: #ff5277;
  border-radius: 12px;
  box-shadow: 0 15px 35px rgba(255, 75, 114, 0.35);
  cursor: pointer;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.envelope:hover {
  transform: translateY(-8px) scale(1.03);
}

.envelope-flap {
  position: absolute;
  top: 0;
  left: 0;
  border-left: 130px solid transparent;
  border-right: 130px solid transparent;
  border-top: 100px solid #fa3e66;
  transform-origin: top;
  transition: transform 0.5s ease;
  z-index: 3;
}

.envelope-pocket {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 0;
  border-left: 130px solid #e63960;
  border-right: 130px solid #e63960;
  border-bottom: 90px solid #d42e53;
  border-radius: 0 0 12px 12px;
  z-index: 4;
}

.envelope-letter {
  position: absolute;
  top: 15px;
  left: 15px;
  width: 230px;
  height: 140px;
  background: #fff;
  border-radius: 8px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #333;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  transition: transform 0.5s ease;
  z-index: 2;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.stamp-heart {
  font-size: 2rem;
  margin-bottom: 6px;
  animation: pulse-heart 1.5s infinite;
}

.envelope.open .envelope-flap {
  transform: rotateX(180deg);
  z-index: 1;
}

.envelope.open .envelope-letter {
  transform: translateY(-70px);
  z-index: 5;
}

.scroll-down-hint {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color 0.3s;
  animation: bounce 2s infinite;
}

.scroll-down-hint:hover {
  color: #fff;
}

.section {
  margin: 60px 0;
}

.section-header {
  margin-bottom: 30px;
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  margin-top: 10px;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1rem;
}

.glass-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 5vw, 44px);
  box-shadow: var(--glow-shadow);
  position: relative;
  overflow: hidden;
}

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--secondary-pink);
  margin-bottom: 12px;
}

.letter-body {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #f1e9f5;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.romantic-quote {
  margin-top: 24px;
  padding: 18px 24px;
  border-left: 4px solid var(--primary-pink);
  background: rgba(255, 75, 114, 0.08);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 1.15rem;
  color: #ffe6ed;
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.reason-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.reason-card:hover, .reason-card:focus {
  transform: translateY(-6px);
  border-color: var(--card-hover-border);
  background: rgba(255, 75, 114, 0.09);
  box-shadow: 0 10px 25px rgba(255, 75, 114, 0.2);
}

.reason-icon {
  font-size: 2rem;
  margin-bottom: 4px;
}

.reason-card h3 {
  font-size: 1.2rem;
  color: #fff;
}

.reason-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.generator-section {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.generator-box {
  min-height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 30px;
  margin: 24px 0 20px;
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(255, 75, 114, 0.4);
  max-width: 600px;
  width: 100%;
}

.generator-box p {
  font-family: 'Caveat', cursive;
  font-size: clamp(1.4rem, 3.5vw, 1.85rem);
  color: #ff9ebb;
  line-height: 1.4;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.counter-text {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.stat-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-number {
  font-family: 'Playfair Display', serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--secondary-pink);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.final-question-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 50px 24px;
  background: radial-gradient(circle at center, rgba(255, 75, 114, 0.15) 0%, rgba(255, 255, 255, 0.03) 70%);
}

.floating-big-heart {
  font-size: 4rem;
  margin-bottom: 12px;
  animation: pulse-heart 1.2s infinite ease-in-out;
}

.action-buttons-wrap {
  display: flex;
  gap: 20px;
  margin-top: 30px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  min-height: 70px;
  position: relative;
}

.btn {
  padding: 16px 36px;
  border-radius: 999px;
  font-size: 1.05rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, #ff4b72 0%, #ff758c 100%);
  color: #fff;
  box-shadow: 0 6px 20px rgba(255, 75, 114, 0.35);
}

.btn-primary:hover, .btn-primary:active {
  transform: scale(1.03);
  box-shadow: 0 10px 28px rgba(255, 75, 114, 0.5);
}

.btn-glow {
  background: linear-gradient(135deg, #ff4b72 0%, #a855f7 100%);
  color: #fff;
  box-shadow: 0 0 25px rgba(255, 75, 114, 0.6);
  font-size: 1.15rem;
  padding: 18px 42px;
}

.btn-glow:hover {
  transform: scale(1.06);
  box-shadow: 0 0 40px rgba(255, 75, 114, 0.85);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.18);
}

.footer {
  text-align: center;
  padding: 40px 10px 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 60px;
}

.footer-sub {
  margin-top: 6px;
  font-size: 0.8rem;
  opacity: 0.7;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 6, 18, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: linear-gradient(135deg, #22122b, #15091e);
  border: 1px solid var(--secondary-pink);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  max-width: 460px;
  width: 100%;
  text-align: center;
  box-shadow: 0 20px 50px rgba(255, 75, 114, 0.4);
  transform: translateY(20px) scale(0.95);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-card {
  transform: translateY(0) scale(1);
}

.modal-heart {
  font-size: 3.5rem;
  margin-bottom: 12px;
  animation: pulse-heart 1s infinite;
}

.modal-card h2 {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  margin-bottom: 12px;
  color: #fff;
}

.modal-card p {
  color: #e5d7eb;
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 24px;
}

@keyframes pulse-heart {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-8px); }
  60% { transform: translateY(-4px); }
}

/* Мобильная адаптация */
@media (max-width: 768px) {
  .top-nav {
    padding: 12px 16px;
  }
  .content-wrapper {
    padding: 16px 14px 40px;
  }
  .section {
    margin: 40px 0;
  }
  .reasons-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .action-buttons-wrap {
    flex-direction: column;
    width: 100%;
  }
  .btn {
    width: 100%;
    max-width: 320px;
  }
  .envelope {
    width: 220px;
    height: 150px;
  }
  .envelope-flap {
    border-left-width: 110px;
    border-right-width: 110px;
    border-top-width: 85px;
  }
  .envelope-pocket {
    border-left-width: 110px;
    border-right-width: 110px;
    border-bottom-width: 80px;
  }
  .envelope-letter {
    width: 190px;
    height: 120px;
    font-size: 0.8rem;
  }
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}