/* General Reset & Premium Typography */
:root {
  --primary-color: #2C3E50; /* Dark Slate Blue */
  --secondary-color: #34495E; /* Lighter Slate Blue */
  --text-color: #333333;
  --text-light: #555555;
  --bg-color: #FFFFFF;
  --bg-alternate: #F8F9FA;
  --border-color: #EAECEF;
}

body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.7;
  font-size: 16px;
  font-weight: 400;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: var(--primary-color);
  margin-top: 0;
  letter-spacing: -0.5px;
}

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: color 0.3s ease;
}

a:hover {
  color: var(--secondary-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 25px;
}

/* Header */
.main-header {
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 50px;
  width: auto;
}

.nav-links a {
  margin-left: 30px;
  font-weight: 500;
  color: var(--text-light);
  padding-bottom: 5px;
  position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
  background-color: var(--bg-alternate);
  text-align: center;
  padding: 120px 0;
}

.hero-section h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero-section p {
  font-size: 1.25rem;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto 2.5rem auto;
  font-weight: 300;
}

/* Buttons */
.btn-primary {
  background-color: var(--primary-color);
  color: white;
  padding: 15px 40px;
  border-radius: 50px;
  font-weight: 500;
  display: inline-block;
  box-shadow: 0 4px 15px rgba(44, 62, 80, 0.2);
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: var(--secondary-color);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 7px 20px rgba(44, 62, 80, 0.25);
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary-color);
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 500;
  display: inline-block;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}


/* Feature Section (Jobs & Academic) */
.feature-section, .collection-section {
  padding: 100px 0;
}

.feature-section.alternate-bg {
  background-color: var(--bg-alternate);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 650px;
  margin: 0 auto;
  font-weight: 300;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.feature-card {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.07);
}

.card-icon {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  line-height: 1;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-light);
}

.section-cta {
  text-align: center;
  margin-top: 60px;
}

/* Collection Section */
.collection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.collection-card {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.07);
    transition: box-shadow 0.3s ease;
}

.collection-card:hover {
    box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}

.collection-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.collection-card:hover img {
    transform: scale(1.05);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 60%);
    display: flex;
    align-items: flex-end;
    padding: 25px;
    box-sizing: border-box;
}

.card-overlay h3 {
    color: white;
    font-size: 1.6rem;
    margin: 0;
    transition: transform 0.3s ease;
}

.collection-card:hover .card-overlay h3 {
    transform: translateY(-5px);
}

/* Footer */
.main-footer {
  background-color: var(--primary-color);
  color: #adb5bd;
  padding: 40px 0;
  margin-top: 80px;
  text-align: center;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-nav a {
  color: #ced4da;
  margin-left: 20px;
}

.footer-nav a:hover {
  color: #FFFFFF;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 2.5rem;
  }
  .section-header h2 {
    font-size: 2.2rem;
  }

  .nav-bar {
    flex-direction: column;
    gap: 20px;
  }
  .nav-links a {
    margin: 0 15px;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  .footer-nav a {
    margin: 0 10px;
  }
}