:root {
  --primary-color: #2c3e50;
  --secondary-color: #34495e;
  --accent-color: #e74c3c;
  --text-color: #2c3e50;
  --light-bg: #f8f9fa;
  --border-color: #dee2e6;
}

html, body {
  height: 100%;
}

body {
  color: var(--text-color);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.7));
  min-height: 100vh;
  position: relative;
  display: flex;
  flex-direction: column;
}

.navbar {
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
}

.form-control, .form-select {
  border-radius: 8px;

  padding: 0.75rem 1rem;
  margin: 0;
}

.form-control:focus, .form-select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.2rem rgba(231, 76, 60, 0.25);
}

.btn-primary {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: #c0392b;
  border-color: #c0392b;
  transform: translateY(-1px);
}

footer {
  flex-shrink: 0;
  background-color: var(--primary-color);
}

.form-label {
  color: #495057;
  font-weight: 500;
  margin: 0 0 0.5rem 0;
  padding: 0;
  display: block;
}

.form-section {
  margin-bottom: 1.5rem;
}

.main-container {
  flex: 1 0 auto;
  max-width: 1100px;
  margin: 2rem auto;
  padding: 2rem;
}

.heading-hero {
  background: linear-gradient(120deg, #23242a 60%, #3a3b47 100%);
  border-radius: 18px;
  padding: 3rem 2rem 2.5rem 2rem;
  margin-bottom: 2.5rem;
  margin-top: 2.5rem;
  box-shadow: 0 4px 32px 0 rgba(0,0,0,0.12);
  text-align: center;
}

#rotating-headings {
  min-height: 120px;
  position: relative;
  margin-bottom: 1rem;
}

#rotating-headings h1 {
  color: #fff;
  text-shadow: 0 2px 16px rgba(0,0,0,0.4), 0 1px 0 #222;
  font-weight: 700;
  font-size: 2.2rem;
  margin-bottom: 0;
  margin-top: 0;
  letter-spacing: -1px;
  transition: opacity 0.6s;
  position: absolute;
  width: 100%;
  top: 0;
  left: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
  padding: 0;
}

#rotating-headings h1.visible {
  opacity: 1;
  visibility: visible;
}

.loading {
  text-align: center;
  padding: 2rem;
  color: #6c757d;
}

#resultsSection {
  margin-top: 2rem;
}

.alert {
  margin-bottom: 0;
}

.spinner-border {
  width: 3rem;
  height: 3rem;
}

@media (max-width: 768px) {
  .main-container {
    padding: 1rem;
  }
  .btn-primary {
    padding: 0.6rem 1.2rem;
  }
  .heading-hero {
    padding: 2rem 0.5rem 1.5rem 0.5rem;
  }
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #c0392b;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(147, 51, 234, 0.1), transparent 70%);
  z-index: 1;
  pointer-events: none;
}





.lighting-effect {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(147, 51, 234, 0.15) 0%, rgba(147, 51, 234, 0) 70%);
  pointer-events: none;
  animation: pulse 3s infinite;
  z-index: 1;
}



/* Form container styling */
#contentForm {

  margin: 0 auto;
  padding-top: 1.5rem;

}

.mb-3 {
  margin: 0 0 1rem 0;
}

.card-body {
  padding: 1.5rem;
}

.text-center.mb-4 {
  margin-bottom: 2rem !important;
}

@media (max-width: 768px) {
  #contentForm {
    max-width: 100%;
    padding: 1rem;
    margin: 0;
    border-radius: 0;
  }
  
  .card-body {
    padding: 1rem;
  }
}

.form-control::placeholder {
  color: #666666;
}

pre {
  white-space: pre-wrap;
  word-wrap: break-word;
}

#spinner {
  transition: opacity 0.3s ease-in-out;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap');

.main-container {
  margin: 2rem auto;
  padding: 2rem;
}

.form-section h3 {
  color: #495057;
  margin-bottom: 1rem;
  font-size: 1.2rem;
  font-weight: 600;
}
.form-label {
  color: #fff;
  font-weight: 500;
}
.loading {
  text-align: center;
  padding: 2rem;
  color: #6c757d;
}
#resultsSection {
  margin-top: 2rem;
}
.alert {
  margin-bottom: 0;
}


.result-container {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
}
.text-section {
  background: #f8f9fa;
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.text-section h3 {
  color: #495057;
  margin-bottom: 1rem;
  font-size: 1.2rem;
  font-weight: 600;
}
.text-content {
  white-space: pre-wrap;
  line-height: 1.6;
  color: #212529;
}
.back-button {
  margin-bottom: 2rem;
}
.loading {
  text-align: center;
  padding: 2rem;
  color: #6c757d;
}