/* Variables */
:root {
  --primary-color: #4CAF50;
  --primary-light: #81C784;
  --primary-dark: #388E3C;
  --background-color: #F5F5F5;
  --text-color: #333333;
  --border-radius: 8px;
}

/* Global Styles */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 10px;
  background-color: var(--background-color);
  color: var(--text-color);
  font-size: 14px;
}

h1 {
    text-align: center;
    color: #2e7d32;
}
h2 {
    text-align: center;
    color: #2e7d32;
    font-size: 14px;
}  
.logo {
  width: 50;
  height: 50; 
}

label {
    font-weight: bold;
    color: #388e3c;
    display: block;
    margin-top: 10px;
}

.header {
  display: flex;
  align-items: center;
  padding: 5px;
}

.container {
  max-width: 100%;
  margin: 0 auto;
  padding: 10px;
  box-sizing: border-box;
  flex-direction: column;
  width: 95%;          
  padding-right: 40px;
}

/* Language Selector */
.language-selector {
  padding-left: 20px;
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  width: 95%
}

.search-section {
    margin: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

  /* Place logo and title inline; allow tagline to wrap below */
  header .search-section {
    flex-wrap: wrap;
  }

  .tagline {
    width: 100%;
    margin: 4px 0 0 0;
    text-align: center;
    color: #555;
  }

.lang-btn {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: var(--border-radius);
  background-color: var(--primary-light);
  color: white;
  cursor: pointer;
  font-size: 1.1em;
  transition: background-color 0.3s ease;
}

.lang-btn.selected {
  background-color: var(--primary-dark);
  font-weight: bold;
}

.lang-btn:hover {
  background-color: var(--primary-dark);
}

/* Filters */
.filters {
  margin-top: 5px;
  margin-bottom: 5px;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.filter-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  width: 100%;
}

.filter-item {
  display: flex;
  gap: 4px;      
  margin-bottom: 12px;
  width: 100%
}

select, input {
  flex: 1;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-size: 1em;
  background-color: white;
  width: 90%;
}

input {
  min-width : 70%;
}

select:focus, input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

.button-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 5px;
}

.action-btn {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: var(--border-radius);
  background-color: var(--primary-color);
  color: white;
  cursor: pointer;
  font-size: 1.1em;
  transition: background-color 0.3s ease;
}

.action-btn:hover {
  background-color: var(--primary-dark);
}

/* Results Container */
.results-container {
  display: flex;
  gap: 16px;
  position: relative;
  /* height: calc(100vh - 200px); */
  margin-top: 20px;
}

.book-list {
  flex: 1;
  overflow-y: auto;
  /* padding-right: 40px; */
  scroll-behavior: smooth;
}

.book-item {
  padding: 16px;
  margin-bottom: 8px;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.book-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.book-title {
  font-weight: bold;
  margin-bottom: 4px;
  color: var(--text-color);
}

.book-author {
  color: #666;
  font-size: 0.9em;
}

/* Alphabet Navigation */
.alphabet-nav {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  padding: 4px;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: opacity 0.3s ease;
}

.letter {
  padding: 4px;
  text-align: center;
  cursor: pointer;
  color: var(--primary-color);
  font-size: 0.9em;
  transition: all 0.2s ease;
  border-radius: 4px;
  margin: 2px 0;
}

.letter:hover {
  background-color: var(--primary-light);
  color: white;
}

/* Letter Sections */
.letter-section {
  margin-bottom: 24px;
}

.letter-header {
  background-color: var(--primary-light);
  color: white;
  padding: 8px 16px;
  border-radius: var(--border-radius);
  margin-bottom: 12px;
  font-weight: bold;
  font-size: 0.9em;
}

/* Processing Message */
.processing-message {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 16px 32px;
  border-radius: var(--border-radius);
  z-index: 1000;
  transition: opacity 0.3s ease;
}

/* No Results Message */
.no-results {
  text-align: center;
  padding: 32px;
  font-size: 1.2em;
  color: #666;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  margin-top: 20px;
}

/* Scrollbar Styling */
.book-list::-webkit-scrollbar {
  width: 8px;
}

.book-list::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 4px;
}

.book-list::-webkit-scrollbar-thumb {
  background: var(--primary-light);
  border-radius: 4px;
}

.book-list::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

.scroll-container {
    max-height: 200px;
    overflow-y: auto;
    padding: 10px;
    background: white;
    margin: 10px auto;
    width: 80%;
    border-radius: 5px;
    box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.1);
}
.new-books ul, .upcoming-activities ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.new-books li, .upcoming-activities li {
    background: #fff;
    padding: 10px;
    margin: 5px 0;
    border-radius: 5px;
    box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.1);
    display: block;
}

.flex-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.flex-row {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-around;
    width: 100%;
    flex-grow: 1;
}
  
/* Mobile Optimizations */
@media (max-width: 768px) {
  body {
    padding: 6px;
  }

  .container {
    flex-direction: column;
    width: 95%;       
    padding: 6px;
    padding-right: 40px;         
  }

  .lang-btn, .action-btn, select, input {
    padding: 6px;
  }
        
  .filter-row {
    flex-direction: column;
    justify-content: center;
    width: 100%;
  }

  /* Language Selector */
  .language-selector {
    width: 80%
  }      
  .results-container {
    flex-direction: column;
    width: 100%;
  }

  .book-list {
    margin-bottom: 60px;
  }

  .alphabet-nav {
    position: fixed;
    right: 0px;
    top: 50%;
    transform: translateY(-50%);
    padding: 4px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: opacity 0.3s ease;
  }

  .letter {
    padding: 4px 2px;
    min-width: 24px;
    font-size: 0.8em;
    margin: 2px;
  }

  .book-item {
    padding: 12px;
  }

  .letter-header {
    padding: 8px 12px;
    font-size: 0.9em;
  }
}

/* Animation for book items */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.book-item {
  animation: fadeIn 0.3s ease forwards;
}

footer {
    color: #2e7d32;
    padding: 15px;
    margin-top: 20px;
}

/* Desktop/Laptop Enhancements */
/* Commenting it out as the search container and alphabet nav does not seem to work here.
@media (min-width: 1000px) {
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 32px;
    background: var(--background-color);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 16px rgba(0,0,0,0.07);
    display: flex;
    flex-direction: column;
  }
  #searchContainer.container {
    flex-direction: row;
  }
  .results-container {
    flex-direction: row;
    align-items: flex-start;
    gap: 32px;
  }
  .filters {
    min-width: 260px;
    max-width: 320px;
    flex: 0 0 300px;
    margin-right: 24px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    background: #fff;
    padding: 16px;
  }
  .book-list {
    max-height: 70vh;
    min-width: 0;
    flex: 1 1 0;
    padding-right: 16px;
  }
  .alphabet-nav {
    position: sticky;
    top: 24px;
    flex-direction: column;
    align-items: flex-end;
    margin-left: 16px;
    gap: 8px;
  }
  .letter {
    font-size: 1.2em;
    padding: 6px 10px;
    margin: 2px 0;
    cursor: pointer;
    border-radius: 4px;
    background: #f0f0f0;
    transition: background 0.2s;
  }
  .letter:hover {
    background: var(--primary-light);
    color: #fff;
  }
  h1, h2 {
    font-size: 2.2em;
  }
  body {
    font-size: 1.1em;
  }
  */
}