:root {
  --blue: #2980b9;
  --green: #25a39a;
  --dark: #333;
  --grey: #888;
  --faded: #f7f7f7;
  --lighter: #eceeef;
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #212529;
  background: #fff;
  line-height: 1.5;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 90%;
  max-width: 960px;
  margin: 0 auto;
}

/* Navbar */
.site-nav {
  background: #f8f9fa;
  border-bottom: 1px solid #e7e7e7;
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 56px;
}

.brand {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dark);
}

.brand:hover {
  color: var(--blue);
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.nav-links a {
  color: #555;
  padding: 0.25rem 0;
  font-size: 1rem;
}

.nav-links a.active {
  color: var(--blue);
  font-weight: 600;
}

/* Home */
.hero {
  background: linear-gradient(-20deg, #2b5876 0%, #4e4376 100%);
  color: #fff;
  padding: 7rem 1rem;
  text-align: center;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: 3rem;
  font-weight: 500;
}

.hero p {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 300;
  opacity: 0.9;
}

.intro {
  background: var(--faded);
  padding: 3rem 0;
  text-align: center;
}

.intro p {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.1rem;
}

.quick-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding: 3rem 0;
}

.quick-link {
  display: block;
  padding: 2rem 1.25rem;
  text-align: center;
  color: var(--dark);
  background: #fff;
  border: 1px solid var(--lighter);
  border-bottom: 4px solid var(--lighter);
  border-radius: 0.25rem;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.quick-link:hover {
  color: var(--blue);
  border-color: var(--blue);
  border-bottom-color: var(--blue);
  text-decoration: none;
}

.quick-link h2 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 500;
}

.quick-link p {
  margin: 0;
  color: var(--grey);
  font-size: 0.95rem;
}

/* Page content */
main.container {
  flex: 1 0 auto;
}

.jumbotron {
  background: var(--faded);
  border-radius: 0.3rem;
  padding: 2rem;
  margin: 2rem 0;
}

.jumbotron h1 {
  margin: 0;
  text-align: center;
  font-size: 1.9rem;
  font-weight: 500;
}

.subtitle {
  color: var(--blue);
  text-align: center;
  font-size: 1.2rem;
  font-weight: 500;
  margin: 0.75rem 0 1.5rem;
}

hr {
  border: 0;
  border-top: 1px solid #ddd;
  margin: 1.5rem 0;
}

.picker {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.card {
  font: inherit;
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  min-width: 110px;
  text-align: center;
  color: var(--dark);
  background: #fff;
  border: 2px solid var(--lighter);
  border-radius: 0.25rem;
  cursor: pointer;
}

.card:hover,
.card.active {
  color: var(--blue);
  border-color: var(--blue);
}

/* Past exams */
.exam-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.exam-grid.two {
  grid-template-columns: repeat(2, 1fr);
  margin-top: 1rem;
}

.download {
  display: block;
  padding: 1.25rem;
  text-align: center;
  color: var(--dark);
  background: #fff;
  border: 1px solid var(--lighter);
  border-bottom: 4px solid var(--lighter);
  border-radius: 0.25rem;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.download:hover {
  color: var(--blue);
  border-bottom-color: var(--blue);
  text-decoration: none;
}

/* Information */
.rules {
  max-width: 800px;
  margin: 0 auto 3rem;
}

.rules li {
  margin-bottom: 0.9rem;
  line-height: 1.55;
}

/* Results */
.results-heading {
  color: var(--blue);
  font-size: 1.25rem;
  font-weight: 500;
  margin: 1.5rem 0 0.75rem;
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.table th,
.table td {
  padding: 0.6rem 0.75rem;
  border: 1px solid #dee2e6;
  text-align: left;
}

.table thead th {
  color: #fff;
  background: #343a40;
  font-weight: 600;
}

.table tbody tr:nth-child(odd) {
  background: #f2f2f2;
}

.table th:first-child,
.table td:first-child {
  width: 4.5rem;
  text-align: center;
}

.muted {
  color: var(--grey);
  text-align: center;
  padding: 1.5rem 1rem;
}

/* Footer */
.site-footer {
  margin-top: 3rem;
  padding: 1.5rem 1rem;
  text-align: center;
  color: #fff;
  background: #333;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: #9cc3e0;
}

@media (max-width: 700px) {
  .site-nav .container {
    flex-direction: column;
    justify-content: center;
    padding: 0.5rem 0;
  }

  .hero {
    padding: 3.5rem 1rem;
  }

  .hero h1 {
    font-size: 1.9rem;
  }

  .quick-links,
  .exam-grid,
  .exam-grid.two {
    grid-template-columns: 1fr;
  }

  .jumbotron {
    padding: 1.5rem 1rem;
  }
}