:root {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;
  --light-bg: #f8fafc;
  --dark-bg: #1a202c;
  --light-text: #f7fafc;
  --dark-text: #2d3748;
  --card-bg: #ffffff;
  --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--light-bg);
  color: var(--dark-text);
  line-height: 1.6;
  min-height: 100vh;
}

.app-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

.app-header {
  text-align: center;
  padding: 40px 0;
  margin: 20px 0 40px;
  position: relative;
}

.app-logo {
  width: 100px;
  height: 100px;
  border-radius: 20px;
  background: white;
  padding: 12px;
  margin: 0 auto 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.app-logo:hover {
  transform: translateY(-5px) rotate(3deg);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.app-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 12px;
}

.title-container {
  margin-bottom: 15px;
}

.app-title {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 10px;
}

.app-price {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 6px 16px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.9rem;
}

.app-description {
  text-align: center;
  font-size: 1.1rem;
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto 50px;
  color: #718096;
}

.app-section {
  margin-bottom: 50px;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 25px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--dark-text);
}

.media-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 40px;
}

.video-card {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  background: var(--card-bg);
  transition: var(--transition);
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.video-thumbnail {
  width: 100%;
  height: 200px;
  object-fit: cover;
  cursor: pointer;
}

.video-play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3rem;
  color: white;
  opacity: 0.9;
  transition: var(--transition);
}

.video-wrapper:hover .video-play-icon {
  transform: translate(-50%, -50%) scale(1.1);
  opacity: 1;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.screenshot-item {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  cursor: pointer;
}

.screenshot-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.screenshot-item img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: var(--transition);
}

.screenshot-item:hover img {
  transform: scale(1.05);
}

.downloads-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 40px;
}

.download-card, .stats-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 25px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.download-card:hover, .stats-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.download-card h3, .stats-card h3 {
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--dark-text);
}

.download-list {
  list-style: none;
}

.download-list li {
  padding: 15px 0;
  display: flex;
  align-items: center;
  gap: 15px;
  border-bottom: 1px solid #edf2f7;
}

.download-list li:last-child {
  border-bottom: none;
}

.download-icon {
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(102, 126, 234, 0.1);
  color: var(--primary-color);
  border-radius: 10px;
  transition: var(--transition);
}

.download-list li:hover .download-icon {
  background: var(--primary-color);
  color: white;
  transform: scale(1.1);
}

.download-details {
  flex: 1;
}

.download-details strong {
  display: block;
  margin-bottom: 5px;
  font-size: 1rem;
}

.download-btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 8px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
}

.stat-item {
  background: #f8fafc;
  border-radius: 12px;
  padding: 15px;
  text-align: center;
  transition: var(--transition);
}

.stat-item:hover {
  background: #edf2f7;
  transform: translateY(-3px);
}

.stat-icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 5px;
  color: var(--dark-text);
}

.stat-label {
  font-size: 0.85rem;
  color: #718096;
}

.contact-links-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.contact-card, .links-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 25px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.contact-card:hover, .links-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.contact-card h3, .links-card h3 {
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--dark-text);
}

.contact-list, .link-list {
  list-style: none;
}

.contact-list li, .link-list li {
  padding: 12px 0;
  display: flex;
  align-items: center;
  gap: 15px;
  border-bottom: 1px solid #edf2f7;
}

.contact-list li:last-child, .link-list li:last-child {
  border-bottom: none;
}

.contact-icon, .link-icon {
  font-size: 1.3rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(102, 126, 234, 0.1);
  color: var(--primary-color);
  border-radius: 8px;
  transition: var(--transition);
}

.contact-list li:hover .contact-icon, .link-list li:hover .link-icon {
  background: var(--primary-color);
  color: white;
  transform: scale(1.1);
}

.contact-details, .link-details {
  flex: 1;
}

.contact-details strong, .link-details strong {
  display: block;
  margin-bottom: 3px;
  font-size: 0.95rem;
}

.app-footer {
  text-align: center;
  padding: 40px 0 20px;
  color: #a0aec0;
  font-size: 0.9rem;
  margin-top: 40px;
}

.copy-notification {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.copy-notification.show {
  opacity: 1;
}

@media (max-width: 768px) {
  .media-container,
  .downloads-container,
  .contact-links-container {
    grid-template-columns: 1fr;
  }
  
  .screenshots-grid {
    grid-template-columns: 1fr;
  }
  
  .app-title {
    font-size: 2rem;
  }
  
  .app-description {
    font-size: 1rem;
  }
}