/* Corporate Professional Design - Clean, Light Theme, No Glows/Blurs */
/* Fonts: Roboto Slab (headings), Open Sans (body) */

@import url('https://fonts.googleapis.com/css2?family=Roboto+Slab:wght@300;400;500;600;700&family=Open+Sans:wght@300;400;500;600;700&display=swap');

:root {
  --primary-navy: #1e3a8a;
  --primary-navy-dark: #1e293b;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-900: #0f172a;
  --text-dark: #1e293b;
  --text-light: #64748b;
  --success-green: #10b981;
  --warning-orange: #f59e0b;
  --danger-red: #ef4444;
  --border-radius: 12px;
  --shadow-subtle: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 12px rgba(0,0,0,0.12);
  --transition: all 0.2s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Roboto Slab', Georgia, serif;
  font-weight: 500;
  line-height: 1.2;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Header */
header {
  background: var(--bg-white);
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-family: 'Roboto Slab', serif;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-navy);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

nav a {
  font-weight: 500;
  color: var(--gray-600);
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

nav a:hover, nav a.active {
  color: var(--primary-navy);
  border-color: var(--primary-navy);
}

.btn-primary {
  background: var(--primary-navy);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--primary-navy-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

/* Hero Section */
.hero {
  padding: 5rem 5% 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.hero-content p {
  font-size: 1.2rem;
  color: var(--gray-600);
  margin-bottom: 2rem;
  max-width: 500px;
}

.hero-image {
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
}

.hero-image img {
  width: 100%;
  height: 450px;
  object-fit: cover;
}

/* Section Header */
.section-header {
  text-align: center;
  margin: 4rem 0 2rem;
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

/* Filter Bar */
.filter-bar {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  padding: 0 5%;
}

.filter-btn {
  background: var(--bg-white);
  border: 1px solid var(--gray-300);
  color: var(--gray-600);
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--primary-navy);
  color: white;
  border-color: var(--primary-navy);
}

/* Fair Grid */
.fair-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 2rem;
  padding: 0 5% 4rem;
  max-width: 1400px;
  margin: 0 auto;
}

.fair-card {
  background: var(--bg-white);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-subtle);
}

.fair-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--gray-300);
}

.fair-card.hide {
  display: none;
}

.card-image {
  position: relative;
  height: 240px;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.fair-card:hover .card-image img {
  transform: scale(1.02);
}

.badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--success-green);
  color: white;
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 6px;
}

.card-content {
  padding: 1.75rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-sector {
  color: var(--primary-navy);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.75rem;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.card-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.detail-item {
  display: flex;
  flex-direction: column;
}

.detail-label {
  font-size: 0.75rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.25rem;
}

.detail-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-dark);
}

.card-footer {
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.deadline {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--danger-red);
}

.card-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary-navy);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-link:hover {
  color: var(--primary-navy-dark);
}

/* Footer */
footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: 4rem 5% 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

.footer-col h3 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: white;
}

.footer-col p {
  color: var(--gray-300);
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.75rem;
}

.footer-col a {
  color: var(--gray-300);
  font-size: 0.95rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: white;
}

.footer-bottom {
  grid-column: 1 / -1;
  text-align: center;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid var(--gray-700);
  color: var(--gray-500);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .fair-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  header, .filter-bar {
    padding-left: 5%;
    padding-right: 5%;
  }
  
  nav ul {
    gap: 1rem;
  }
  
  .fair-grid {
    grid-template-columns: 1fr;
    padding: 0 5%;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .card-details {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .section-header h2 {
    font-size: 2rem;
  }
  
  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filter-btn {
    text-align: center;
  }
}