body {
  /* background-color: #1e1e1e;
  color: white;
  font-family: 'Segoe UI', sans-serif;
  text-align: center; */
  margin: 0;
  padding: 0;
}
a.poweereBy{
  color: #fff;
  text-decoration: none;
}
a.poweereBy:hover{
  opacity: .7;
  text-decoration: underline;
}
.app-container {
  max-width: 520px;
  margin: 0 auto;
  padding: 24px 16px;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.converter-card {
  background: #ffffff;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08), 0 8px 20px rgba(0, 0, 0, 0.04);
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.converter-header {
  background: linear-gradient(135deg, #a31414 0%, #c41616 50%, #db1f1f 100%);
  padding: 28px 24px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.converter-header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(10px, 10px) rotate(5deg); }
}

.converter-header h2 {
  color: #ffffff;
  font-size: 26px;
  font-weight: 700;
  margin: 0;
  position: relative;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.converter-body {
  padding: 24px;
}

.app-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.app-row input,
.app-row select {
  flex: 1;
  width: 100%;
  padding: 14px 16px;
  font-size: 16px;
  border-radius: 12px;
  border: 2px solid #e5e7eb;
  background: #f9fafb;
  color: #1f2937;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.app-row input:focus,
.app-row select:focus {
  outline: none;
  border-color: #a31414;
  background: #ffffff;
  box-shadow: 0 0 0 4px rgba(163, 20, 20, 0.1), 0 4px 12px rgba(0,0,0,0.05);
}

.app-row input::placeholder {
  color: #9ca3af;
}

.converter-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: -8px 0 16px;
  position: relative;
  z-index: 1;
}

.converter-divider span {
  background: #ffffff;
  padding: 0 12px;
  color: #a31414;
  font-weight: 700;
  font-size: 18px;
}

.converter-divider::before {
  content: '';
  position: absolute;
  left: 24px;
  right: 24px;
  height: 1px;
  background: #e5e7eb;
  z-index: -1;
}

.converter-info {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid #f3f4f6;
  text-align: center;
}

.converter-info p {
  font-size: 13px;
  color: #6b7280;
  margin: 6px 0;
}

.converter-info a.poweereBy {
  color: #a31414;
  font-weight: 600;
  text-decoration: none;
}

.converter-info a.poweereBy:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  .app-container {
    padding: 16px 12px;
  }
  .converter-header {
    padding: 20px 16px 16px;
  }
  .converter-header h2 {
    font-size: 20px;
  }
  .converter-body {
    padding: 16px;
  }
  .app-row {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .app-row input,
  .app-row select {
    width: 100%;
  }
}

/* Page Header Section */
.page-header-section {
  text-align: center;
  padding: 40px 20px;
  background: #ffffff;
  margin-bottom: 0;
}

.page-header-section h1 {
  font-size: 32px;
  font-weight: 700;
  color: #333;
  margin-bottom: 10px;
}

.page-header-section p {
  font-size: 16px;
  color: #666;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}

/* SEO Content Section */
.seo-content-section {
  background: #ffffff;
  padding: 40px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.seo-content-section h2 {
  font-size: 28px;
  font-weight: 700;
  color: #333;
  margin-bottom: 20px;
  margin-top: 0;
}

.seo-content-section h3 {
  font-size: 22px;
  font-weight: 600;
  color: #444;
  margin-top: 30px;
  margin-bottom: 15px;
}

.seo-content-section p {
  font-size: 16px;
  color: #555;
  line-height: 1.8;
  margin-bottom: 20px;
}

.seo-content-section ul,
.seo-content-section ol {
  margin-bottom: 20px;
  padding-left: 30px;
}

.seo-content-section li {
  font-size: 16px;
  color: #555;
  line-height: 1.8;
  margin-bottom: 10px;
}

.seo-content-section li strong {
  color: #333;
  font-weight: 600;
}

@media (max-width: 768px) {
  .page-header-section {
    padding: 30px 15px;
  }
  
  .page-header-section h1 {
    font-size: 26px;
  }
  
  .page-header-section p {
    font-size: 14px;
  }
  
  .seo-content-section {
    padding: 25px 20px;
  }
  
  .seo-content-section h2 {
    font-size: 24px;
  }
  
  .seo-content-section h3 {
    font-size: 20px;
  }
  
  .seo-content-section p,
  .seo-content-section li {
    font-size: 15px;
  }
}