/* =========================================
   VARIABLES & DESIGN TOKENS
   ========================================= */
:root {
  /* Primary Corporate Colors */
  --c-dark-grey: #555555;
  --c-teal: #3cb4ac;
  --c-navy: #1b3e51;
  --c-yellow: #f1b82d;
  
  /* Specialty Colors */
  --c-ortho: #5a928e;
  --c-sport: #3d9ed5;
  --c-neuro: #8f6297;
  --c-reeduc: #555f9a;
  
  /* News */
  --c-cyan: #0097c3;

  /* UI Colors */
  --c-bg-light: #f8fafc;
  --c-white: #ffffff;
  --c-text-main: #333333;
  --c-text-muted: #666666;

  /* Fonts */
  --font-main: 'Montserrat', 'Open Sans', sans-serif;
  --font-serif: 'PT Serif', serif;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  
  /* Transitions */
  --transition: all 0.3s ease;
}

/* =========================================
   RESET & BASICS
   ========================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  color: var(--c-text-main);
  background-color: var(--c-bg-light);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* =========================================
   UTILITIES
   ========================================= */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-center { text-align: center; }
.mt-4 { margin-top: 2rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-2 { margin-bottom: 1rem; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 0.9rem;
}

/* New Model Cards Styles */
.model-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    color: var(--c-navy);
}
.model-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }

.model-preview {
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Syne', sans-serif;
    font-weight: 800;
}

.model-info {
    padding: 25px;
    flex: 1;
}

.model-title {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--c-navy);
}

.model-desc {
    font-size: 1rem;
    color: var(--c-gray);
    line-height: 1.5;
}


.btn-primary {
  background-color: var(--c-teal);
  color: var(--c-white);
}

.btn-primary:hover {
  background-color: var(--c-navy);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--c-navy);
  color: var(--c-navy);
}

.btn-outline:hover {
  background-color: var(--c-navy);
  color: var(--c-white);
}

/* Header Reusable Elements */
.site-header {
  background: var(--c-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--c-teal);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 1.2rem;
}

.logo-text h1 {
  font-size: 1.5rem;
  color: var(--c-dark-grey);
  line-height: 1;
}

.logo-text p {
  font-family: var(--font-serif);
  font-size: 0.75rem;
  color: var(--c-text-muted);
  letter-spacing: 1px;
}