/* style.css */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #333;
  margin: 0;
  padding: 20px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

h1,
h2 {
  font-weight: 600;
  margin-bottom: 1rem;
}

input,
select,
button {
  width: 100%;
  padding: 0.75rem;
  margin-top: 0.25rem;
  margin-bottom: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1rem;
}

button {
  background-color: #007bff;
  color: white;
  cursor: pointer;
  transition: background-color 0.2s;
}

button:hover {
  background-color: #0056b3;
}

.fixed {
  z-index: 1000;
}

@media (min-width: 600px) {
  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .form-grid .full-width {
    grid-column: span 2;
  }
}

/* Form layout: 2 columns (Required | Optional) on desktop */
@media (min-width: 768px) {
  .form-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .form-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
}

/* Results layout: 3 columns on desktop */
@media (min-width: 768px) {
  .results-grid {
    display: block;
  }
}

/* Responsive: stack everything on small screens */
@media (max-width: 767px) {

  .form-container,
  .results-grid {
    display: block;
  }

  .form-section {
    margin-bottom: 1rem;
  }
}

/* Enforce two-column layout for form-container */
@media (min-width: 768px) {
  .form-container {
    display: grid;
    grid-template-columns: 1fr 1fr !important;
    gap: 2rem;
  }
}

/* Inline toggle for unit switch */
.unit-toggle {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Tooltip Enhancements */
.tooltip-icon {
  display: inline-block;
  margin-left: 0.5rem;
  cursor: pointer;
  color: #007bff;
}

.tooltip-box {
  display: none;
  position: absolute;
  background: #333;
  color: #fff;
  padding: 0.5rem;
  border-radius: 4px;
  top: 100%;
  left: 0;
  z-index: 10;
  width: 500px;
  font-size: 0.9rem;
}

.tooltip-icon:hover+.tooltip-box,
.tooltip-icon.active+.tooltip-box {
  display: block;
}

/* Tooltip container and behavior */
.tooltip-wrapper {
  position: relative;
  display: inline-block;
}

.tooltip-icon {
  margin-left: 0.5rem;
  cursor: pointer;
  color: #007bff;
}

.tooltip-box {
  display: none;
  position: absolute;
  background: #333;
  color: #fff;
  padding: 0.5rem;
  border-radius: 4px;
  top: 100%;
  left: 0;
  z-index: 10;
  max-width: 250px;
  font-size: 0.9rem;
  white-space: normal;
}

.tooltip-wrapper:hover .tooltip-box,
.tooltip-icon.active+.tooltip-box {
  display: block;
}
.result-block {
  margin-bottom: 2rem;
  background-color: #f9f9f9;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.result-block h4 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
  border-bottom: 1px solid #ccc;
  padding-bottom: 0.5rem;
}

.result-pairs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 2rem;
}

.result-pairs div {
  background: #fff;
  padding: 0.75rem;
  border-radius: 4px;
  box-shadow: inset 0 0 3px rgba(0,0,0,0.05);
  font-size: 1rem;
}


/* Header Styling */
.site-header {
  background-image: url('https://www.diabetesnet.com/wordpress/wp-content/uploads/2019/09/site_header-1.png');
  background-repeat: repeat-x;
  background-size: 100% auto;
  background-color: #070531;
  color: #3a3a3a;
  position: relative;
  padding: 1rem 0;
}

/* Logo Styling */
.site-logo {
  display: inline-block;
  margin-left: 10%;
}

/* Navigation Menu Styling */
.main-navigation {
  background-color: #fff;
  border-top: 1px solid #e0e0e0;
}

.main-navigation ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.main-navigation li {
  margin: 0 1rem;
}

.main-navigation a {
  display: block;
  padding: 1rem;
  color: #333;
  text-decoration: none;
  font-weight: 600;
}

.main-navigation a:hover,
.main-navigation a:focus {
  color: #0073aa;
  text-decoration: underline;
}

.grid-container{ margin-left:auto; margin-right:auto; }


/* Responsive Menu */
@media (max-width: 768px) {
  .main-navigation ul {
    flex-direction: column;
    align-items: center;
  }

  .main-navigation li {
    margin: 0.5rem 0;
  }
}


/* === Responsive Navigation Additions === */

/* Mobile Hamburger Menu */
#menu-toggle {
  display: none;
}

@media (max-width: 768px) {
  #menu-toggle {
    display: block;
    margin: 0 auto;
    text-align: center;
  }

  .main-navigation ul {
    display: none;
    flex-direction: column;
    align-items: center;
  }

  .main-navigation ul.visible {
    display: flex;
  }
}