/* --- Global Settings & Professional Light Theme Variables --- */
:root {
  --primary-color: #0057ff;
  --background-color: #f8f9fa;
  --card-background-color: #ffffff;
  --text-color: #333333;
  --heading-color: #212529; /* Near-black for strong headings */
  --border-color: #dee2e6;
  --shadow-color: rgba(0, 0, 0, 0.05);
  --font-main: "Assistant", sans-serif;
}

/* --- Basic Body & Layout --- */
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-main);
  background-color: var(--background-color);
  color: var(--text-color);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  text-align: center;
}

.container {
  max-width: 1200px;
  width: 100%;
  padding: 40px 20px;
}

/* --- Header --- */
.main-header {
  margin-bottom: 60px;
}

.logo {
  width: 70px;
  height: auto;
  margin-bottom: 20px;
}

h1 {
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 3rem;
  color: var(--heading-color);
  margin: 0;
}

.subtitle {
  font-size: 1.3rem;
  color: var(--text-color);
  opacity: 0.8;
  margin-top: 10px;
}

/* --- Path Selection Cards --- */
.path-selection {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  justify-content: center;
}

.path-card {
  background-color: var(--card-background-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 30px;
  text-decoration: none;
  color: var(--text-color);
  box-shadow: 0 4px 15px var(--shadow-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.path-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-color);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* Accessibility: Visible focus for keyboard navigation */
.path-card:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 4px;
  border-color: var(--primary-color);
}

.card-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.card-title {
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 1.7rem;
  color: var(--heading-color);
  margin: 0 0 15px;
}

.card-description {
  font-size: 1rem;
  line-height: 1.7;
  opacity: 0.9;
  min-height: 70px;
}

.card-cta {
  display: inline-block;
  margin-top: 20px;
  font-weight: 700;
  color: var(--primary-color);
  transition: letter-spacing 0.3s ease;
}

.path-card:hover .card-cta {
  letter-spacing: 0.5px;
  text-decoration: underline;
}

/* --- Footer --- */
.main-footer {
  margin-top: 80px;
  font-size: 0.9rem;
  color: var(--text-color);
  opacity: 0.7;
}

.main-footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.main-footer a:hover,
.main-footer a:focus-visible {
  text-decoration: underline;
  outline: none;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  .subtitle {
    font-size: 1.1rem;
  }
  .path-selection {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}