:root {
  /* Site Colors: #2980B9 (Blue), #ECF0F1 (Light Grey), #2C3E50 (Dark Blue), #E67E22 (Orange) */
  /* Highlight: #16A085 (Teal) */

  --primary-color: #2980B9;
  --secondary-color: #34495D;
  --accent-color: #E67E22;
  --light-color: #ECF0F1;
  --dark-color: #2C3E50;
  --gradient-primary: linear-gradient(180deg, #FFFFFF 0%, #ECF0F1 100%);
  --hover-color: #1F618D;
  --background-color: #FFFFFF;
  --text-color: #333333;
  --border-color: #BDC3C7;
  --divider-color: #E5E7E9;
  --shadow-color: rgba(41, 128, 185, 0.15);
  --highlight-color: #16A085;
  
  --main-font: 'Open Sans', sans-serif;
  --alt-font: 'Roboto Condensed', sans-serif;
  
  --container-width: 1100px;
  --product-img-width: 340px;
}

body {
    font-family: var(--main-font);
    color: var(--text-color);
    background-color: var(--background-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Scientific Grid Pattern */
.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.4;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h40v40H0V0zm1 1h38v38H1V1z' fill='%232980B9' fill-opacity='0.1' fill-rule='evenodd'/%3E%3C/svg%3E");
}

h1, h2, h3, h4, h5, h6 { font-family: var(--alt-font); text-transform: uppercase; }
.font-heading { font-family: var(--alt-font); }
.font-text { font-family: var(--main-font); }

.bg-primary { background-color: var(--primary-color); }
.text-primary { color: var(--primary-color); }
.text-accent { color: var(--accent-color); }

.btn-clinical {
    background-color: var(--accent-color);
    color: white;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 4px;
    transition: background 0.2s ease-in-out;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.btn-clinical:hover {
    background-color: #D35400;
}

.box-shadow-clean {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.site-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    z-index: 10;
    position: relative;
}

.container-custom {
    max-width: var(--container-width);
    margin: 0 auto;
}

.product-img { max-width: var(--product-img-width); width: 100%; }

/* Mobile Footer Fixes */
@media (max-width: 768px) {
    .footer-content { flex-direction: column; text-align: center; }
    .footer-logo { margin-bottom: 1rem; }
}