/* ================== LAYOUT & NAVIGATION ================== */

/* === HEADER === */
header {
  background-color: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: none;
  box-shadow: none;
  padding: 0;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-navbar);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

header.hidden {
  transform: translateY(-100%);
  opacity: 0;
}

/* === NAVBAR === */
.navbar {
  background-color: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 8px 15px;
  max-width: 95%;
  margin: 20px auto 0;
  border: 1px solid #e5e5e5;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

/* === NAVIGATION MENU === */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 25px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
}

.nav-link {
  color: var(--text-dark);
  font-weight: var(--font-weight-bold);
  text-decoration: none;
  transition: all var(--transition-base);
  text-shadow: none;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-sm);
}

.nav-link:hover,
.nav-link.active {
  color: var(--secondary);
  transform: translateY(-2px);
}

/* === LOGO === */
.nav-logo {
  display: flex;
  align-items: center;
  margin-right: auto;
}

.logo {
  max-width: 100px;
  height: auto;
}

/* === FOOTER === */
footer {
  background-color: var(--bg-primary);
  color: var(--text-dark);
  text-align: center;
  padding: var(--space-lg);
  width: 100%;
  border-top: none;
}

.social-links {
  margin-bottom: var(--space-md);
}

.social-links a {
  color: var(--text-dark);
  text-decoration: none;
  margin: 0 15px;
  transition: color var(--transition-base);
  font-weight: var(--font-weight-bold);
}

.social-links a:hover {
  color: var(--accent);
}

.copyright {
  font-size: var(--font-size-sm);
  margin: 0;
  color: var(--text-muted);
}

/* === PAGE SECTIONS === */
.hero {
  background: var(--gradient-hero-mesh);
  color: var(--text-light);
  text-align: center;
  padding: 80px 20px 80px;
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
  margin-top: 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 60% 40%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
  animation: float 20s ease-in-out infinite;
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  top: 10%;
  right: 10%;
  width: 100px;
  height: 100px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  animation: morphing 8s ease-in-out infinite;
  z-index: 1;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(120deg); }
  66% { transform: translate(-20px, 20px) rotate(240deg); }
}

@keyframes morphing {
  0%, 100% { 
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    transform: translate(0, 0) rotate(0deg);
  }
  25% { 
    border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%;
    transform: translate(20px, -20px) rotate(90deg);
  }
  50% { 
    border-radius: 50% 50% 33% 67% / 55% 27% 73% 45%;
    transform: translate(-20px, 20px) rotate(180deg);
  }
  75% { 
    border-radius: 33% 67% 58% 42% / 63% 68% 32% 37%;
    transform: translate(20px, 20px) rotate(270deg);
  }
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
  padding: 2rem;
}

.hero-content::before {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20% 80% 30% 70% / 50% 60% 40% 50%;
  animation: morphing-left 6s ease-in-out infinite;
}

.hero-content::after {
  content: '';
  position: absolute;
  bottom: -30px;
  right: -30px;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.08);
  clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
  animation: rotate 6s linear infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.2); opacity: 0.3; }
}

@keyframes morphing-left {
  0%, 100% { 
    border-radius: 20% 80% 30% 70% / 50% 60% 40% 50%;
    transform: translate(0, 0) rotate(0deg);
  }
  25% { 
    border-radius: 70% 30% 50% 50% / 30% 70% 30% 70%;
    transform: translate(-10px, 10px) rotate(90deg);
  }
  50% { 
    border-radius: 50% 50% 80% 20% / 60% 40% 60% 40%;
    transform: translate(10px, -10px) rotate(180deg);
  }
  75% { 
    border-radius: 40% 60% 40% 60% / 80% 20% 80% 20%;
    transform: translate(-5px, -5px) rotate(270deg);
  }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero h1 {
  font-size: var(--font-size-7xl);
  color: var(--text-light);
  margin-bottom: var(--space-xs);
  text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
}

.hero p {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-lg);
  color: var(--text-dark);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* === CONTENT SECTIONS === */
.section {
  padding: var(--space-3xl) var(--space-lg);
}

.section-center {
  text-align: center;
}

.section-alt {
  background-color: var(--bg-secondary);
}

/* === CONTENT WRAPPERS === */
.content-wrapper {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

.content-wrapper-sm {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

/* === CAROUSEL LAYOUT === */
.carousel-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  height: 250px;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.carousel-slide.active {
  opacity: 1;
}

.review-text {
  font-style: italic;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
  color: var(--text-muted);
  max-width: 600px;
  text-align: center;
}

.review-author {
  font-weight: var(--font-weight-bold);
  color: var(--secondary);
  font-size: var(--font-size-base);
}

.carousel-dots {
  margin-top: var(--space-md);
  text-align: center;
}

.dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  background-color: #ddd;
  border-radius: 50%;
  margin: 0 5px;
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.dot.active {
  background-color: var(--secondary);
}

/* === MEET PENNY PAGE STYLES === */

/* Penny Photo Section */
.penny-photo-container {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.penny-main-photo {
    max-width: 400px;
    width: 100%;
    height: auto;
    border-radius: 15%;
    box-shadow: var(--shadow-xl);
    margin: 0 auto;
    display: block;
}

/* Penny Content Layout */
.penny-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-2xl);
    text-align: left;
}

.penny-description {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* Penny Text Styles */
.penny-hello {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-black);
    color: var(--primary);
    margin: 0;
    line-height: var(--line-height-tight);
    text-align: left;
    font-family: var(--font-family-display);
}

.penny-intro {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    margin: 0;
    line-height: var(--line-height-base);
}

.penny-story,
.penny-mission {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    line-height: var(--line-height-loose);
    margin: 0;
}

.penny-sign-off {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    line-height: var(--line-height-loose);
    margin: 0;
    font-style: italic;
    text-align: right;
    margin-top: var(--space-lg);
}

/* Penny Page Mobile Responsiveness */
@media (max-width: 768px) {
    .penny-main-photo {
        max-width: 280px;
    }

    .penny-content {
        padding: var(--space-lg);
    }

    .penny-hello {
        font-size: var(--font-size-xl);
    }

    .penny-intro {
        font-size: var(--font-size-lg);
    }

    .penny-story,
    .penny-mission,
    .penny-sign-off {
        font-size: var(--font-size-base);
    }

    .hero h1 {
        font-size: var(--font-size-5xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 480px) {
    .penny-main-photo {
        max-width: 240px;
    }

    .hero h1 {
        font-size: var(--font-size-4xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }
}

/* === NEW HOME PAGE STYLES === */

/* Hero Section Updates */
.hero-subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-lg);
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.3);
  font-weight: var(--font-weight-normal);
}

.hero-button {
  margin-top: var(--space-lg);
}

/* Section Titles */
.section-title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-black);
  color: var(--primary);
  margin-bottom: var(--space-xl);
  text-align: center;
}

.section-alt .section-title {
  color: var(--secondary);
}

/* What is Lello Section */
.lello-description {
  margin-top: var(--space-2xl);
}

.description-content {
  padding: var(--space-2xl);
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.description-content::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, 
    transparent 40%, 
    rgba(8, 195, 185, 0.05) 50%, 
    transparent 60%);
  animation: gradientAnimation 6s linear infinite;
  pointer-events: none;
}

.description-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: relative;
  z-index: 1;
}

.main-text {
  font-size: var(--font-size-xl);
  color: var(--text-dark);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.description-text {
  font-size: var(--font-size-lg);
  color: var(--text-dark);
  line-height: var(--line-height-loose);
  margin: var(--space-lg) 0 0 0;
  font-style: italic;
}

/* What's Inside Section */
.whats-inside-content {
  margin-top: var(--space-2xl);
}

.box-contents-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-2xl);
  margin: var(--space-2xl) 0;
}

/* Flip Card Styles */
.flip-card {
  width: 100%;
  height: 350px;
  perspective: 1000px;
  cursor: pointer;
  transition: all var(--transition-base);
}

/* No hover effects on flip cards - click only */

/* Simple flipped state - no hover effects */
.flip-card.flipped {
  cursor: pointer;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transform-style: preserve-3d;
}

/* Keep the flip animation working but prevent hover interference */
.flip-card.flipped .flip-card-inner {
  transform: rotateY(180deg);
}


/* Clean flip card visibility */

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  box-sizing: border-box;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.flip-card-back {
  transform: rotateY(180deg);
}

/* Enhanced effects for flipped cards */
.flip-card.flipped .flip-card-front.glass-card,
.flip-card.flipped .flip-card-back.glass-card {
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 15px 40px rgba(31, 38, 135, 0.6);
}

.card-image {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--lello-yellow), var(--lello-orange));
  border-radius: 50%;
  margin-bottom: var(--space-lg);
  box-shadow: 0 15px 30px rgba(248, 188, 76, 0.4);
  transition: all var(--transition-base);
}

/* No hover effects on card images */

.flip-card.flipped .card-image {
  /* transform: scale(1.1); */
  box-shadow: 0 20px 40px rgba(248, 188, 76, 0.6);
}

.item-icon {
  font-size: 3.5rem;
  filter: drop-shadow(2px 2px 8px rgba(0, 0, 0, 0.2));
}

.card-title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-black);
  color: var(--primary);
  margin: 0;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
  transition: all var(--transition-base);
}

.flip-card-back .card-title {
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-xl);
}

.card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  height: 100%;
  justify-content: center;
  max-width: 260px;
}

.card-description {
  font-size: var(--font-size-base);
  color: var(--text-dark);
  line-height: var(--line-height-relaxed);
  margin: 0;
  text-align: center;
  font-weight: var(--font-weight-normal);
}

/* Ensure smooth transitions for both states */
.flip-card,
.flip-card.flipped {
  transition: all var(--transition-base);
}

/* Legacy styles for compatibility */
.content-item-enhanced {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-2xl) var(--space-lg);
  background: rgba(255, 255, 255, 0.8);
  border-radius: var(--border-radius-lg);
  border: 3px solid rgba(248, 188, 76, 0.2);
  text-align: center;
}

.item-icon-wrapper {
  position: relative;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--lello-yellow), var(--lello-orange));
  border-radius: 50%;
  margin-bottom: var(--space-md);
  box-shadow: 0 10px 25px rgba(248, 188, 76, 0.3);
}

.item-title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-black);
  color: var(--primary);
  margin: 0 0 var(--space-md) 0;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.item-description {
  font-size: var(--font-size-base);
  color: var(--text-dark);
  line-height: var(--line-height-base);
  margin: 0;
  max-width: 280px;
}

/* Ready to Get Started Section */
.ready-content {
  margin-top: var(--space-2xl);
}

.ready-text {
  padding: var(--space-2xl);
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.box-contents-preview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-2xl) 0;
}

.content-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.4);
  border-radius: var(--border-radius);
  border: 2px solid rgba(248, 188, 76, 0.3);
  transition: all var(--transition-base);
}

.content-item:hover {
  transform: translateY(-5px) scale(1.02);
  background: rgba(255, 255, 255, 0.6);
  border-color: var(--secondary);
  box-shadow: 0 10px 25px rgba(248, 188, 76, 0.2);
}

.item-icon {
  font-size: 3rem;
  filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.1));
  animation-delay: var(--stagger-delay, 0s);
}

.content-item:nth-child(1) .item-icon {
  --stagger-delay: 0s;
}

.content-item:nth-child(2) .item-icon {
  --stagger-delay: 0.5s;
}

.content-item:nth-child(3) .item-icon {
  --stagger-delay: 1s;
}

.content-item p {
  font-size: var(--font-size-lg);
  color: var(--text-dark);
  font-weight: var(--font-weight-bold);
  margin: 0;
  text-align: center;
}

.cta-text {
  font-size: var(--font-size-xl);
  color: var(--primary);
  font-weight: var(--font-weight-bold);
  margin: var(--space-xl) 0 var(--space-lg) 0;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.closing-text {
  font-size: var(--font-size-lg);
  color: var(--text-dark);
  line-height: var(--line-height-relaxed);
  font-style: italic;
  margin: 0;
  padding: var(--space-md);
  background: linear-gradient(135deg, rgba(8, 195, 185, 0.1), rgba(248, 188, 76, 0.1));
  border-radius: var(--border-radius);
  border-left: 4px solid var(--secondary);
}

/* Lello Learner Section */
.learner-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
  margin-top: var(--space-xl);
}

.learner-text h2 {
  text-align: left;
}

.learner-description {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-base);
  color: var(--text-dark);
  margin-top: var(--space-lg);
}

.learner-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Gift Box Animation */
.box-opening {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-3xl);
}

.gift-box {
  position: relative;
  width: 200px;
  height: 200px;
  transition: all var(--transition-slow);
}

.gift-box:hover {
  transform: scale(1.1);
}

.box-base {
  width: 100%;
  height: 60%;
  background: linear-gradient(135deg, var(--lello-orange), var(--lello-pink));
  border-radius: var(--border-radius);
  position: absolute;
  bottom: 0;
  box-shadow: var(--shadow-lg);
}

.box-lid {
  width: 105%;
  height: 40%;
  background: linear-gradient(135deg, var(--lello-yellow), var(--lello-teal));
  border-radius: var(--border-radius);
  position: absolute;
  top: 0;
  left: -2.5%;
  box-shadow: var(--shadow);
  transform-origin: bottom center;
  transition: all var(--transition-slow);
  animation: lid-float 3s ease-in-out infinite;
}

@keyframes lid-float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(-10deg); }
}

.box-contents {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  animation: sparkle-appear 3s ease-in-out infinite;
}

@keyframes sparkle-appear {
  0%, 40% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
  60%, 80% { opacity: 1; transform: translate(-50%, -50%) scale(1.2); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(0.8); }
}

.sparkle {
  position: absolute;
  font-size: var(--font-size-2xl);
  animation: sparkle-dance 2s ease-in-out infinite;
}

.sparkle:nth-child(1) {
  top: -10px;
  left: -20px;
  animation-delay: 0s;
}

.sparkle:nth-child(2) {
  top: 10px;
  left: 20px;
  animation-delay: 0.5s;
}

.sparkle:nth-child(3) {
  top: -20px;
  right: -10px;
  animation-delay: 1s;
}

@keyframes sparkle-dance {
  0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.7; }
  50% { transform: translateY(-15px) rotate(180deg); opacity: 1; }
}

/* Theme Showcase */
.theme-showcase {
  margin-top: var(--space-xl);
  padding: var(--space-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.theme-preview {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-xl);
  align-items: center;
  text-align: left;
}

.theme-image {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.theme-title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-3xl);
  color: var(--primary);
  margin-bottom: var(--space-sm);
  font-weight: var(--font-weight-black);
}

.theme-description {
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--text-dark);
  margin: 0;
}

/* Call to Action Section */
.cta-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.cta-description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-base);
  color: var(--text-dark);
  margin: var(--space-lg) 0 var(--space-2xl) 0;
}

.cta-button {
  font-size: var(--font-size-xl);
  padding: var(--space-lg) var(--space-2xl);
  background: linear-gradient(135deg, var(--lello-orange), var(--lello-pink));
  border: none;
  box-shadow: var(--shadow-brand);
  animation: pulse 2s ease-in-out infinite;
}

.cta-button:hover {
  box-shadow: var(--shadow-brand-hover);
  transform: scale(1.05) translateY(-5px);
  animation: none;
}

/* === SCREEN TIME VS LETTER TIME SECTION === */

.comparison-container {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-xl);
  align-items: center;
  margin: var(--space-2xl) 0;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.screen-side,
.letter-side {
  text-align: center;
  position: relative;
}

.screen-content,
.letter-content {
  padding: var(--space-xl);
  border-radius: var(--border-radius);
  transition: all var(--transition-slow);
}

/* Phone Mockup */
.phone-mockup {
  position: relative;
  width: 200px;
  height: 350px;
  margin: 0 auto var(--space-lg);
  background: linear-gradient(135deg, #1a1a1a, #333);
  border-radius: 25px;
  border: 3px solid #555;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.screen-glow {
  position: absolute;
  width: 85%;
  height: 85%;
  background: linear-gradient(45deg, #4a9eff, #00d4ff, #4a9eff);
  background-size: 300% 300%;
  animation: screen-flicker 3s ease-in-out infinite;
  border-radius: 15px;
  opacity: 0.8;
}

@keyframes screen-flicker {
  0%, 100% { 
    opacity: 0.8;
    background-position: 0% 50%;
  }
  25% { 
    opacity: 0.9;
    background-position: 100% 50%;
  }
  50% { 
    opacity: 0.7;
    background-position: 50% 100%;
  }
  75% { 
    opacity: 0.85;
    background-position: 0% 0%;
  }
}

.notification-bubbles {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 2;
}

.notification {
  position: absolute;
  font-size: var(--font-size-xl);
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  padding: var(--space-xs);
  animation: notification-pop 2s ease-in-out infinite;
}

.notification:nth-child(1) {
  top: 20%;
  left: 15%;
  animation-delay: 0s;
}

.notification:nth-child(2) {
  top: 30%;
  right: 20%;
  animation-delay: 0.5s;
}

.notification:nth-child(3) {
  bottom: 40%;
  left: 20%;
  animation-delay: 1s;
}

.notification:nth-child(4) {
  bottom: 25%;
  right: 15%;
  animation-delay: 1.5s;
}

@keyframes notification-pop {
  0%, 90% { 
    transform: scale(0);
    opacity: 0;
  }
  10%, 80% { 
    transform: scale(1);
    opacity: 1;
  }
}

/* Letter Paper */
.handwritten-elements {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-lg);
}

.letter-paper {
  width: 200px;
  height: 250px;
  background: #fefefe;
  border: 1px solid #e0e0e0;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow);
  position: relative;
  padding: var(--space-lg);
  transform: rotate(-2deg);
  animation: paper-flutter 4s ease-in-out infinite;
}

@keyframes paper-flutter {
  0%, 100% { transform: rotate(-2deg); }
  50% { transform: rotate(1deg); }
}

.handwriting-line {
  width: 80%;
  height: 2px;
  background: linear-gradient(90deg, var(--lello-blue) 0%, var(--lello-blue) 60%, transparent 100%);
  margin-bottom: var(--space-md);
  border-radius: 1px;
  animation: handwriting-draw 3s ease-in-out infinite;
}

.handwriting-line:nth-child(1) {
  width: 75%;
  animation-delay: 0s;
}

.handwriting-line:nth-child(2) {
  width: 90%;
  animation-delay: 0.5s;
}

.handwriting-line:nth-child(3) {
  width: 65%;
  animation-delay: 1s;
}

@keyframes handwriting-draw {
  0%, 20% { 
    width: 0%; 
    opacity: 0;
  }
  40%, 80% { 
    width: var(--final-width, 75%); 
    opacity: 1;
  }
  100% { 
    width: var(--final-width, 75%); 
    opacity: 0.8;
  }
}

.heart-doodle {
  position: absolute;
  bottom: var(--space-md);
  right: var(--space-md);
  font-size: var(--font-size-lg);
  animation: heart-pulse 2s ease-in-out infinite;
}

@keyframes heart-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

.floating-elements {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

.float-element {
  position: absolute;
  font-size: var(--font-size-xl);
  animation: gentle-float 6s ease-in-out infinite;
}

.float-element:nth-child(1) {
  top: -20px;
  left: 20px;
  animation-delay: 0s;
}

.float-element:nth-child(2) {
  top: 30px;
  right: -10px;
  animation-delay: 2s;
}

.float-element:nth-child(3) {
  bottom: 0px;
  left: -15px;
  animation-delay: 4s;
}

@keyframes gentle-float {
  0%, 100% { 
    transform: translateY(0) rotate(0deg);
    opacity: 0.7;
  }
  50% { 
    transform: translateY(-20px) rotate(10deg);
    opacity: 1;
  }
}

/* Transition Arrow */
.transition-arrow {
  font-size: var(--font-size-4xl);
  color: var(--lello-orange);
  animation: arrow-pulse 2s ease-in-out infinite;
  text-align: center;
}

@keyframes arrow-pulse {
  0%, 100% { 
    transform: scale(1);
    opacity: 0.8;
  }
  50% { 
    transform: scale(1.1);
    opacity: 1;
  }
}

/* Comparison Text */
.comparison-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin: var(--space-lg) 0;
  transition: all var(--transition-base);
}

.fade-text {
  color: var(--text-muted);
  opacity: 0.7;
}

.appear-text {
  color: var(--lello-teal);
  text-shadow: 0 0 10px rgba(8, 195, 185, 0.3);
}

.section-description {
  margin-top: var(--space-2xl);
  text-align: center;
}

.section-description p {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-base);
  color: var(--text-dark);
  font-style: italic;
  max-width: 600px;
  margin: 0 auto;
}