:root {
  --primary: #C41E3A;    /* Christmas red */
  --secondary: #146B3A;  /* Holly green */
  --background: #FCF7F8; /* Snow white */
  --accent: #AF0E10;     /* Deep red */
  --primary-font: 'Bricolage Grotesque';
  --header-font: 'Parkinsans';
  --title-text-size: 2.6rem;
  --standard-text-size: 0.875rem;
}

body {
  background: repeating-linear-gradient(
    45deg,
    white,
    white 10px,
    #C41E3A 10px,
    #C41E3A 20px
  );
  font-family: var(--primary-font);
  position: relative;
  overflow-x: hidden;
}

/* Container overlay for readability */
.container-fluid {
  background-color: rgba(255, 255, 255, 0.95);
  min-height: 100vh;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background: repeating-linear-gradient(
    45deg,
    var(--primary),
    var(--primary) 10px,
    var(--holly-green) 10px,
    var(--holly-green) 20px
  );
  z-index: 1000;
}

/* Sidebar Styles */
.sidebar {
  background-color: rgba(255, 255, 255, 0.98);
  border-radius: 0 20px 20px 0;
  padding: 25px;
  box-shadow: 5px 0 15px rgba(0,0,0,0.1);
  position: relative;
  border-left: 4px solid var(--primary);
}

.sidebar::after {
  content: '';
  position: absolute;
  top: 10px;
  right: 10px;
  width: 20px;
  height: 20px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent);
}

/* Button Styles */
h1.text-primary {
  color: var(--primary) !important;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
  position: relative;
}

h1.text-primary::after {
  content: '🎄';
  font-size: 1.6em;
  margin-left: 10px;
}

.btn-primary {
  background-color: var(--primary);
  border: none;
  border-radius: 25px;
  padding: 8px 20px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: var(--holly-green);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.btn-secondary {
  background-color: var(--secondary);
  border: none;
  border-radius: 25px;
  padding: 8px 20px;
}

.btn-secondary:hover {
  background-color: var(--holly-green);
}

/* Card Styles - Updated for candy cane background */
.card {
  margin-bottom: 20px;
  border-radius: 20px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
  border: none;
  position: relative;
  overflow: hidden;
  background-color: rgba(255, 255, 255, 0.98);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--holly-green));
}

.card-body {
  background-color: #fff;
  border-radius: 20px;
  padding: 25px;
}

/* Table Styles */
.table {
  border-collapse: separate;
  border-spacing: 0 8px;
}

.table th {
  background-color: var(--secondary);
  color: white;
  font-weight: 600;
  padding: 15px;
  border: none;
}

.table td {
  background-color: white;
  padding: 15px;
  border: none;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.table tr {
  margin-bottom: 8px;
}

/* Main Content Styles - Updated for candy cane background */
.main-content {
  background-color: transparent;
  min-height: 100vh;
  padding: 30px;
  position: relative;
}

.main-content::after {
  content: '❄';
  position: fixed;
  top: 20px;
  right: 20px;
  font-size: 24px;
  color: var(--primary);
  animation: snowfall 3s infinite linear;
}

@keyframes snowfall {
  0% { transform: translateY(0) rotate(0deg); }
  100% { transform: translateY(20px) rotate(360deg); }
}

/* PK Graph Container Styles - Updated for better contrast */
.pk-container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 25px;
  background: rgba(255, 255, 255, 0.98);
  padding: 20px;
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.pk-data {
  padding: 20px;
  background: var(--background);
  border-radius: 15px;
  border: 2px dashed var(--primary);
}

.pk-graph {
  height: 300px;
  background-color: rgba(255, 255, 255, 0.98);
  border-radius: 15px;
  padding: 20px;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.1);
}

/* Modal Styles */
.modal-content {
  border-radius: 20px;
  border: none;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.modal-header {
  background: linear-gradient(135deg, var(--primary), var(--holly-green));
  color: white;
  border-radius: 20px 20px 0 0;
  padding: 20px;
}

.modal-body {
  padding: 25px;
}

.modal-footer {
  background-color: var(--background);
  border-radius: 0 0 20px 20px;
  padding: 20px;
}

/* Form Styles */
.form-control {
  border-radius: 12px;
  border: 2px solid #e0e0e0;
  padding: 10px 15px;
  transition: all 0.3s ease;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
  .pk-container {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    border-radius: 20px;
    margin-bottom: 20px;
    border-left: none;
    border-top: 4px solid var(--primary);
  }
  
  .card {
    margin-bottom: 15px;
  }
}

/* Additional Festive Elements */
.nav-tabs .nav-link.active::before {
  content: '🎅';
  margin-right: 5px;
}

.alert {
  border-radius: 15px;
  border: none;
  padding: 15px 20px;
  margin-bottom: 15px;
  position: relative;
  padding-left: 45px;
}

.alert::before {
  content: '🎁';
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
}

/* Tree Image Container */
.tree-image-container {
  text-align: center;
  padding: 15px 5px;
  position: relative;
  min-height: 180px;
}

.christmas-tree-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
}

/* Optional decorative elements */
.tree-image-container::after {
  content: '✨';
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 20px;
  animation: twinkle 1.5s infinite alternate;
}

@keyframes twinkle {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

/* Festive Container Header Styles */
.side-festive-container h3 {
  color: #C41E3A;  /* Christmas red */
  font-size: 1.3rem;
  font-weight: 1000;
  text-align: center;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
  background: linear-gradient(45deg, #C41E3A, #146B3A);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  /* Adjust spacing */
  margin-top: 20px;  /* Add space above the header */
  margin-bottom: 15px;
  padding: 5px 0;
  position: relative;  /* Add positioning context */
  top: 10px;  /* Move header down by 10px */
}

/* Decorative elements */
.side-festive-container h3::before,
.side-festive-container h3::after {
  margin: 0 8px;
  font-size: 1em;
  -webkit-text-fill-color: initial;
}

.holiday-message-box {
  padding: 20px;
  text-align: center;
  border-radius: 8px;
  margin-top: 1px;
}

.holiday-message-box h3 {
  color: #C41E3A;
  font-size: 1.3rem;
  font-weight: 1000;
  text-align: left;
  margin-bottom: 15px;
}

.holiday-content {
  padding: 10px;
}

.about-section {
  text-align: left;
}

.about-section p {
  text-align: left;
}

.disclaimer-bold {
  font-weight: bold;
}

/* Add these styles to your existing CSS */

/* Main title */
h1.text-primary {
  font-size: 2rem !important;  /* Larger main title */
}

/* Section headers */
h5 {
  font-size: 1.5rem !important;
  margin-bottom: 1rem !important;
}

/* Input labels */
.form-label {
  font-size: 1.2rem !important;
  margin-bottom: 0.5rem !important;
}

/* Input text */
.form-control {
  font-size: 1.2rem !important;
  padding: 0.5rem 0.75rem !important;
}

/* Unit toggle buttons */
.unit-toggle .btn {
  font-size: 1.1rem !important;
  padding: 0.4rem 0.8rem !important;
}

/* Table headers and content */
.table th,
.table td {
  font-size: 1.2rem !important;
  padding: 0.75rem !important;
}

/* PK values */
.pk-value {
  font-size: 1.3rem !important;
  margin-bottom: 0.8rem !important;
}

.pk-label {
  font-weight: 500;
  font-size: 1.3rem !important;
}

/* Kinetic parameters text */
#kinetic-params p {
  font-size: 1.2rem !important;
  margin-bottom: 0.5rem !important;
}

/* Action buttons */
.btn-primary,
.btn-secondary,
.btn-danger {
  font-size: 1.2rem !important;
  padding: 0.5rem 1rem !important;
}

/* Warning messages */
.alert {
  font-size: 1.2rem !important;
}

/* Input group text (units) */
.input-group-text {
  font-size: 1.2rem !important;
  padding: 0.5rem 0.75rem !important;
}