.cas-page {
  background: #f7faf2;
  font-family: 'Poppins', sans-serif;
}

.cas-container,
.cas-modal {
  --cas-primary: #063b00;
  --cas-primary-light: #266210;
  --cas-secondary: #90b800;
  --cas-light: #f7faf2;
  --cas-dark: #222;
  --cas-gray: #555;
  --cas-border: #eee;
  --cas-shadow-sm: 0 1px 3px rgb(0 0 0 / 12%);
  --cas-shadow-md: 0 4px 12px rgb(0 0 0 / 10%);
  --cas-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.cas-container {
  box-sizing: border-box;
  width: 100%;
  max-width: 1200px;
  margin: 2rem auto 4rem;
  padding: 2rem;
  overflow-x: hidden;
  border-radius: 0.5rem;
  background: #fff;
  box-shadow: var(--cas-shadow-md);
  color: var(--cas-dark);
  font-family: 'Poppins', sans-serif;
}

.cas-container *,
.cas-container *::before,
.cas-container *::after,
.cas-modal *,
.cas-modal *::before,
.cas-modal *::after {
  box-sizing: border-box;
}

.cas-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--cas-primary);
  text-align: center;
}

.cas-header h1 {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: 0 0 0.75rem;
  color: var(--cas-primary);
  font-size: 2rem;
  font-weight: 700;
}

.cas-header h1 i {
  color: var(--cas-primary-light);
}

.cas-subtitle {
  margin: 0 0 1.5rem;
  color: var(--cas-gray);
  font-size: 1.05rem;
}

.cas-search {
  position: relative;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

.cas-search > i {
  position: absolute;
  top: 50%;
  left: 1rem;
  transform: translateY(-50%);
  color: var(--cas-gray);
  pointer-events: none;
}

#search-cas {
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border: 1px solid var(--cas-border);
  border-radius: 0.5rem;
  font: inherit;
  font-size: 1rem;
  transition: var(--cas-transition);
}

#search-cas:focus {
  outline: none;
  border-color: var(--cas-primary);
  box-shadow: 0 0 0 3px rgb(6 59 0 / 10%);
}

.cas-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--cas-border);
}

.cas-filter-groups {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
}

.cas-filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.cas-filter-label {
  color: var(--cas-gray);
  font-size: 0.8rem;
  font-weight: 600;
}

.cas-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cas-filter-row .cas-filter-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--cas-border);
  border-radius: 2rem;
  background: #fff;
  color: var(--cas-dark);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--cas-transition);
}

.cas-filter-row .cas-filter-btn:hover {
  border-color: var(--cas-primary-light);
  background: var(--cas-light);
}

.cas-filter-row .cas-filter-btn.active {
  border-color: var(--cas-primary);
  background: var(--cas-primary);
  color: #fff;
}

.cas-sort {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
  color: var(--cas-gray);
  font-size: 0.9rem;
}

#sort-by {
  padding: 0.5rem;
  border: 1px solid var(--cas-border);
  border-radius: 0.25rem;
  background: #fff;
  color: var(--cas-dark);
  font: inherit;
}

#search-cas:focus-visible,
#sort-by:focus-visible,
.cas-filter-row .cas-filter-btn:focus-visible,
.cas-grid button:focus-visible,
.cas-grid a:focus-visible,
.cas-modal button:focus-visible,
.cas-modal a:focus-visible {
  outline: 3px solid rgb(144 184 0 / 55%);
  outline-offset: 2px;
}

.cas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 350px), 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.cas-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--cas-border);
  border-radius: 0.5rem;
  background: #fff;
  box-shadow: var(--cas-shadow-sm);
  transition: var(--cas-transition);
}

.cas-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--cas-shadow-md);
}

.cas-card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--cas-border);
  background: var(--cas-light);
}

.cas-badge {
  max-width: 100%;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  background: var(--cas-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.cas-badge-new {
  padding: 0.25rem 0.5rem;
  border-radius: 1rem;
  background: var(--cas-secondary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
}

.cas-year {
  margin-left: auto;
  color: var(--cas-primary);
  font-weight: 700;
}

.cas-card-body {
  flex-grow: 1;
  padding: 1.25rem;
}

.cas-title {
  margin: 0 0 1rem;
  color: var(--cas-dark);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.cas-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--cas-gray);
  font-size: 0.875rem;
}

.cas-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.cas-meta i {
  color: var(--cas-primary-light);
}

.cas-card-footer {
  display: flex;
  border-top: 1px solid var(--cas-border);
}

.cas-download-btn,
.cas-view-btn {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  border: 0;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: var(--cas-transition);
}

.cas-download-btn {
  background: var(--cas-primary);
  color: #fff;
}

.cas-download-btn:hover {
  background: var(--cas-primary-light);
  color: #fff;
}

.cas-view-btn {
  background: #fff;
  color: var(--cas-primary);
}

.cas-view-btn:hover {
  background: var(--cas-light);
}

.cas-no-results,
.cas-loading {
  grid-column: 1 / -1;
  padding: 3rem;
  color: var(--cas-gray);
  text-align: center;
}

.cas-no-results i {
  display: block;
  margin-bottom: 0.75rem;
  font-size: 2rem;
}

.cas-loading p {
  margin: 0;
}

.cas-loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  margin-bottom: 1rem;
  border: 4px solid var(--cas-border);
  border-top-color: var(--cas-primary);
  border-radius: 50%;
  animation: cas-spin 0.8s linear infinite;
}

.cas-modal {
  position: fixed;
  z-index: 1100;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgb(0 0 0 / 65%);
  font-family: 'Poppins', sans-serif;
}

.cas-modal[aria-hidden="false"] {
  display: flex;
}

.cas-modal-content {
  position: relative;
  width: min(1000px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  padding-bottom: max(2rem, env(safe-area-inset-bottom));
  border-radius: 0.5rem;
  background: #fff;
  box-shadow: var(--cas-shadow-md);
}

.cas-modal-close {
  position: absolute;
  z-index: 1;
  top: 1rem;
  right: 1rem;
  padding: 0.5rem;
  border: 0;
  background: transparent;
  color: var(--cas-gray);
  font-size: 1.3rem;
  cursor: pointer;
}

.cas-modal-close:hover {
  color: var(--cas-dark);
}

#modal-title {
  margin: 0 2.5rem 1.5rem 0;
  color: var(--cas-primary);
  font-size: 1.3rem;
  line-height: 1.4;
}

.cas-modal-body {
  margin-bottom: 2rem;
  color: var(--cas-gray);
}

.cas-modal-body p {
  margin: 0 0 0.5rem;
}

.cas-pdf-preview {
  width: 100%;
  height: min(500px, 55vh);
  overflow: hidden;
  margin-top: 1rem;
  border: 1px solid var(--cas-border);
  border-radius: 0.5rem;
}

.cas-pdf-preview iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.cas-modal-footer {
  display: flex;
  justify-content: flex-end;
}

.cas-modal-footer .cas-download-btn {
  display: inline-flex;
  padding: 0.6rem 1.3rem;
  border-radius: 0.25rem;
}

.cas-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  clip-path: inset(50%);
}

@keyframes cas-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .cas-container {
    margin: 1rem auto 3rem;
    padding: 1.25rem;
  }

  .cas-header h1 {
    font-size: 1.6rem;
  }

  .cas-subtitle {
    font-size: 1rem;
  }

  .cas-filters {
    align-items: stretch;
    flex-direction: column;
    gap: 0.75rem;
  }

  .cas-sort {
    margin-left: 0;
    justify-content: flex-start;
  }

  .cas-pdf-preview {
    height: 350px;
  }
}

@media (max-width: 480px) {
  .cas-container {
    margin: 1rem auto 2rem;
    padding: 1rem;
    border-radius: 0;
    box-shadow: none;
  }

  .cas-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .cas-card-footer {
    flex-direction: column;
  }

  .cas-header h1 {
    gap: 0.4rem;
    font-size: 1.35rem;
  }

  .cas-modal-content {
    padding: 1.25rem;
    border-radius: 0.5rem;
  }

  .cas-pdf-preview {
    height: 280px;
  }

  .cas-filter-row {
    gap: 0.4rem;
  }

  .cas-filter-row .cas-filter-btn {
    padding: 0.4rem 0.85rem;
    font-size: 0.82rem;
  }
}