/* ==========================================================================
   GLOBAL VARIABLES & DESIGN SYSTEM 
   ========================================================================== */
:root {
  /* WCAG 2.2 AA Compliant Color Palette */
  --color-primary-dark: #082434;
  --color-primary-base: #0073e6;
  --color-primary-light: #D6ECFF;
  --color-secondary-base: #2AAE8A;
  --color-text-main: #111111;
  --color-text-muted: #666666;
  --color-bg-base: #FFFFFF;
  --color-bg-alt: #F6FBFF;
  --color-border: #E2E8F0;
  
  /* Typography Scale */
  --font-heading: 'Roboto Slab', serif;
  --font-body: 'Open Sans', system-ui, sans-serif;
  --base-size: 16px;
  
  /* 8-Point Grid Spacing Scale */
  --space-xs: 0.5rem;   
  --space-sm: 1rem;     
  --space-md: 1.5rem;   
  --space-lg: 2rem;     
  --space-xl: 4rem;     

  /* Structural Variables */
  --max-width: 1280px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.05);
  --shadow-hover: 0 10px 15px rgba(0,0,0,0.1);
}

/* Logo */
.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* Active nav */
.nav-link.active {
  color: var(--color-primary-base);
}

/* CTA fix */
.nav-cta {
  white-space: nowrap;
}

/* Active CTA (employers page) */
.nav-cta.active {
  background-color: var(--color-primary-dark);
  color: #fff;
}

/* ==========================================================================
   RESETS & ACCESSIBILITY FOUNDATION
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: var(--base-size); }
body { font-family: var(--font-body); color: var(--color-text-main); background-color: var(--color-bg-base); line-height: 1.6; -webkit-font-smoothing: antialiased; display: flex; flex-direction: column; min-height: 100vh; }
main { flex: 1; }
*:focus-visible { outline: 3px solid var(--color-primary-base); outline-offset: 2px; }

h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--color-primary-dark); line-height: 1.2; margin-bottom: var(--space-sm); }
a { color: var(--color-primary-base); text-decoration: none; transition: color 0.2s ease; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; padding: 0; margin: 0; }

/* ==========================================================================
   MODULAR COMPONENTS & UTILITIES 
   ========================================================================== */
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-sm); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.75rem 1.5rem; font-weight: 600; border-radius: var(--radius-md); border: none; cursor: pointer; transition: all 0.2s ease; text-decoration: none!important; min-height: 48px; }
.btn-primary { background-color: var(--color-primary-base); color: #fff; }
.btn-primary:hover { background-color: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-secondary { background-color: transparent; border: 2px solid var(--color-primary-base); color: var(--color-primary-base); }
.btn-sm { padding: 0.5rem 1rem; min-height: 40px; font-size: 0.875rem; }

/* Badges */
.badge { display: inline-block; padding: 0.25rem 0.75rem; font-size: 0.75rem; font-weight: 700; border-radius: 9999px; background-color: var(--color-bg-alt); color: var(--color-primary-dark); border: 1px solid var(--color-border); text-transform: uppercase; letter-spacing: 0.05em; }

/* Cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--space-lg); }
.card { background: var(--color-bg-base); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; transition: box-shadow 0.3s ease, transform 0.3s ease; display: flex; flex-direction: column; }
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.card-img { width: 100%; height: 200px; object-fit: cover; border-bottom: 1px solid var(--color-border); }
.card-content { padding: var(--space-md); flex-grow: 1; display: flex; flex-direction: column; }
.card-meta { font-size: 0.875rem; color: var(--color-text-muted); margin-bottom: var(--space-xs); display: flex; gap: var(--space-xs); align-items: center; }
.card-title { font-size: 1.25rem; margin-bottom: var(--space-xs); line-height: 1.3; }
.card-excerpt { color: var(--color-text-muted); font-size: 0.95rem; margin-bottom: var(--space-md); flex-grow: 1; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0; }

/* ==========================================================================
   HEADER & FOOTER (Ensures horizontal navigation)
   ========================================================================== */
.site-header { border-bottom: 1px solid var(--color-border); padding: var(--space-sm) 0; background: var(--color-bg-base); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm); }
.header-container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.site-nav { display: flex; gap: var(--space-lg); align-items: center; margin: 0; padding: 0; list-style: none; }
.site-nav li { display: inline-block; margin: 0; }
.site-nav a { font-weight: 600; color: var(--color-text-main); }
.site-nav a:hover { color: var(--color-primary-base); text-decoration: none; }

.site-footer { background: var(--color-primary-dark); color: white; padding: var(--space-xl) 0 var(--space-md); margin-top: var(--space-xl); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: var(--space-xl); border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: var(--space-lg); margin-bottom: var(--space-md); }
.site-footer h3,.site-footer h4 { color: white; margin-bottom: var(--space-sm); font-size: 1.25rem; }
.site-footer p { color: rgba(255,255,255,0.7); font-size: 0.95rem; }
.site-footer ul li { margin-bottom: 0.75rem; }
.site-footer a { color: var(--color-primary-light); text-decoration: none; transition: color 0.2s; font-size: 0.95rem; }
.site-footer a:hover { color: white; text-decoration: underline; }
.footer-bottom { text-align: center; color: rgba(255,255,255,0.5); font-size: 0.875rem; }