/* ============================================
   MERLOT-STYLE RESOURCE LIBRARY
   ============================================ */

/* Page Header */
.library-page-header {
  background: linear-gradient(135deg, var(--parchment-light) 0%, var(--beige) 100%);
  padding: 60px 20px 40px;
  border-bottom: 2px solid var(--beige);
}

.library-header-content {
  max-width: 1400px;
  margin: 0 auto;
  text-align: center;
}

.library-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 400;
  color: var(--sage-green);
  margin-bottom: 12px;
  font-family: var(--font-palatino);
  letter-spacing: -0.5px;
}

.library-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: #666;
  font-family: var(--font-gentium);
  font-style: italic;
}

/* ============================================
   MAIN LAYOUT: Sidebar + Content
   ============================================ */

.library-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  max-width: 1400px;
  margin: 0 auto;
  min-height: 600px;
  background: var(--warm-white);
}

/* ============================================
   LEFT SIDEBAR: Filters
   ============================================ */

.filter-sidebar {
  background: var(--parchment-light);
  border-right: 1px solid var(--beige);
  padding: 24px 16px;
  position: sticky;
  top: 0;
  height: fit-content;
  max-height: 100vh;
  overflow-y: auto;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--beige);
}

.sidebar-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--sage-dark);
  font-family: var(--font-palatino);
  margin: 0;
}

.clear-filters-btn {
  background: none;
  border: 1px solid var(--sage-green);
  color: var(--sage-green);
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.clear-filters-btn:hover {
  background: var(--sage-green);
  color: white;
}

/* Filter Groups */
.filter-group {
  margin-bottom: 28px;
}

.filter-heading {
  font-size: 14px;
  font-weight: 700;
  color: var(--sage-dark);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-family: var(--font-sans);
}

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-checkbox:hover {
  padding-left: 4px;
}

.filter-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--sage-green);
}

.filter-checkbox span {
  font-size: 14px;
  color: var(--text-dark);
  font-family: var(--font-gentium);
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */

.library-main-content {
  padding: 32px;
  background: var(--warm-white);
}

/* Search Section */
.search-section {
  margin-bottom: 24px;
}

.search-bar-container {
  position: relative;
  max-width: 100%;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--sage-green);
  font-size: 16px;
}

.library-search-input {
  width: 100%;
  padding: 14px 16px 14px 48px;
  border: 1px solid var(--beige);
  border-radius: 8px;
  font-size: 16px;
  font-family: var(--font-gentium);
  color: var(--text-dark);
  background: white;
  transition: all 0.2s;
}

.library-search-input:focus {
  outline: none;
  border-color: var(--sage-green);
  box-shadow: 0 0 0 3px rgba(38, 92, 47, 0.1);
}

.library-search-input::placeholder {
  color: #999;
}

/* Controls Row */
.library-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--beige);
}

.results-info {
  font-size: 16px;
  color: var(--text-dark);
  font-family: var(--font-gentium);
}

.results-count {
  font-weight: 600;
  color: var(--sage-green);
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sort-controls label {
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 600;
  font-family: var(--font-sans);
}

.sort-select {
  padding: 8px 32px 8px 12px;
  border: 1px solid var(--beige);
  border-radius: 6px;
  font-size: 14px;
  font-family: var(--font-gentium);
  color: var(--text-dark);
  background: white;
  cursor: pointer;
  transition: all 0.2s;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23265c2f' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.sort-select:hover {
  border-color: var(--sage-green);
}

.sort-select:focus {
  outline: none;
  border-color: var(--sage-green);
  box-shadow: 0 0 0 3px rgba(38, 92, 47, 0.1);
}

/* ============================================
   RESOURCES GRID
   ============================================ */

.resources-grid-merlot {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

/* ============================================
   COMPACT RESOURCE CARDS
   ============================================ */

.resource-card-compact {
  background: white;
  border: 1px solid var(--beige);
  border-radius: 8px;
  padding: 24px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.resource-card-compact:hover {
  border-color: var(--sage-green);
  box-shadow: 0 4px 12px rgba(38, 92, 47, 0.15);
  transform: translateY(-2px);
}

/* Card Icon */
.card-icon {
  font-size: 48px;
  margin-bottom: 16px;
  text-align: center;
  padding: 20px;
  background: linear-gradient(135deg, var(--parchment-light) 0%, var(--beige) 100%);
  border-radius: 6px;
}

/* Card Title */
.card-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--sage-dark);
  margin-bottom: 12px;
  font-family: var(--font-palatino);
  line-height: 1.3;
}

/* Card Description */
.card-description {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
  font-family: var(--font-gentium);
}

/* Card Metadata Badges */
.card-metadata {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.meta-badge {
  display: inline-block;
  padding: 4px 10px;
  background: var(--parchment-light);
  border: 1px solid var(--beige);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--sage-dark);
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Card Link Button */
.card-link-btn {
  display: block;
  width: 100%;
  padding: 12px 16px;
  background: var(--sage-green);
  color: white;
  text-align: center;
  text-decoration: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-sans);
  transition: all 0.2s;
  border: 2px solid var(--sage-green);
}

.card-link-btn:hover {
  background: var(--sage-dark);
  border-color: var(--sage-dark);
  transform: translateY(-1px);
}

/* ============================================
   NO RESULTS MESSAGE
   ============================================ */

.no-results-message {
  text-align: center;
  padding: 80px 20px;
  color: #999;
}

.no-results-icon {
  font-size: 64px;
  margin-bottom: 20px;
  opacity: 0.5;
}

.no-results-message h3 {
  font-size: 24px;
  color: var(--sage-dark);
  margin-bottom: 12px;
  font-family: var(--font-palatino);
}

.no-results-message p {
  font-size: 16px;
  color: #999;
  font-family: var(--font-gentium);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  .resources-grid-merlot {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .library-layout {
    grid-template-columns: 1fr;
  }

  .filter-sidebar {
    position: static;
    border-right: none;
    border-bottom: 2px solid var(--beige);
    max-height: none;
  }

  .sidebar-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .library-main-content {
    padding: 20px;
  }

  .library-controls {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .resources-grid-merlot {
    grid-template-columns: 1fr;
  }

  .library-page-header {
    padding: 40px 20px 30px;
  }

  .library-title {
    font-size: 32px;
  }

  .library-subtitle {
    font-size: 16px;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .filter-sidebar {
    padding: 16px 12px;
  }

  .library-main-content {
    padding: 16px;
  }

  .card-icon {
    font-size: 36px;
    padding: 16px;
  }

  .card-title {
    font-size: 18px;
  }

  .card-description {
    font-size: 13px;
  }
}

/* Sidebar Scrollbar Styling */
.filter-sidebar::-webkit-scrollbar {
  width: 8px;
}

.filter-sidebar::-webkit-scrollbar-track {
  background: var(--parchment-light);
}

.filter-sidebar::-webkit-scrollbar-thumb {
  background: var(--sage-green);
  border-radius: 4px;
}

.filter-sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--sage-dark);
}

/* ========================================
   SUBJECT COLOR PALETTE
   ======================================== */

:root {
  --subject-math: #5B7FBF;        /* Blue */
  --subject-reading: #9B59B6;     /* Purple */
  --subject-science: #27AE60;     /* Green */
  --subject-writing: #E67E22;     /* Orange */
  --subject-social: #C0392B;      /* Red */
  --subject-art: #E91E63;         /* Pink */
}

/* ========================================
   CLICKABLE CARD WRAPPER