/* Global Styles */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 20px;
  text-align: center;
  background-color: #f7f7f7;
  color: #333;
}

/* Header Styles */
header {
  margin-bottom: 20px;
}

header h1 {
  font-size: 2.5rem;
  color: #007bff;
  margin: 10px auto;
}

header p {
  font-size: 1rem;
  color: #555;
}

nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: 10px;
}

nav ul li {
  display: inline;
}

nav ul li button {
  padding: 10px 20px;
  border: none;
  background-color: #007bff;
  color: white;
  cursor: pointer;
  border-radius: 5px;
  font-size: 1rem;
  transition: background-color 0.3s;
}

nav ul li button:hover {
  background-color: #0056b3;
}

nav ul li button.disabled-during-search {
  background-color: #6c757d;
  opacity: 0.6;
  cursor: not-allowed;
  position: relative;
}

nav ul li button.disabled-during-search:hover {
  background-color: #6c757d;
  transform: none;
}

nav ul li button.disabled-during-search::after {
  content: '🔒';
  position: absolute;
  top: -5px;
  right: -5px;
  font-size: 0.8rem;
  background: #dc3545;
  color: white;
  border-radius: 50%;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Word List & Buttons */
#vocabulary-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 20px;
}

.word-item {
  width: calc(50% - 40px);
  margin: 10px;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
  background-color: #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: relative;
  transition: transform 0.2s ease-in-out;
}

.word-item:hover {
  transform: translateY(-5px);
}

.play-button {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 1.2rem;
  color: #007bff;
  cursor: pointer;
}

.play-button:hover {
  color: #0056b3;
}

/* Pagination & Navigation */
.navigation {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.navigation button {
  padding: 10px 20px;
  border: none;
  background-color: #007bff;
  color: white;
  cursor: pointer;
  border-radius: 5px;
  font-size: 1rem;
  transition: background-color 0.3s;
}

.navigation button:disabled {
  background-color: #ddd;
  cursor: not-allowed;
}

.navigation button:hover:not(:disabled) {
  background-color: #0056b3;
}

/* Scroll Buttons */
.activer,
.activel {
  color: #ffffff;
  background-color: #ff5722;
  display: inline-block;
  font-size: large;
  cursor: pointer;
  width: fit-content;
  height: 35px;
  position: fixed;
  bottom: 20px;
  border-radius: 5px;
  padding: 5px 10px;
}

.activer {
  right: 16px;
}

.activel {
  left: 16px;
}

/* Hide when non-active */
.non-active {
  display: none;
}

#words-per-page {
  margin-bottom: 20px;
  font-size: 1rem;
}

#page-size,
#translation-language {
  padding: 5px 10px;
  font-size: 1rem;
  border-radius: 5px;
  border: 1px solid #ddd;
  background-color: #fff;
  color: #333;
}

/* body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 20px;
  text-align: center;
}

header h1,
nav,
select {
  margin: 10px auto;
  text-align: center;
}

nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: 10px; 
}

nav ul li {
  display: inline;
}

nav ul li button {
  padding: 10px 20px;
  border: none;
  background-color: #007bff;
  color: white;
  cursor: pointer;
  border-radius: 5px;
  transition: background-color 0.3s;
}

nav ul li button:hover {
  background-color: #0056b3;
}

#vocabulary-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center; 
  margin-top: 20px;
}

.word-item {
  width: calc(50% - 40px);
  margin: 10px;
  padding: 10px;
  border: 1px solid #ddd;
  position: relative;
}

.play-button {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
}

.navigation {
  margin-top: 20px;
}

.navigation button {
  margin: 0 10px;
}

.activer {
  color: #444;
 
  background-color: #eaa221;
  display: inline-block;
  font-size: large;
  cursor: pointer;
  width: fit-content;
  height: 35px;
  position: fixed;
  bottom: 0;
  right: 16px;
  border-radius: 5px;
}

.activel {
  color: #444;
  
  background-color: #eaa221;
  display: inline-block;
  font-size: large;
  cursor: pointer;
  width: fit-content;
  height: 35px;
  position: fixed;
  bottom: 0;
  left: 16px;
  border-radius: 5px;
}

.non-active {
  width: 0;
  height: 0;
} */

/* body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 20px;
}

header {
  text-align: center;
}

#level-selector {
  list-style-type: none;
  padding: 0;
}

#level-selector li {
  display: inline-block;
  margin: 0 10px;
}

.word-item {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
}

.play-button {
  margin-left: 10px;
  cursor: pointer;
}

#translation-language {
  margin-top: 10px;
} */

/* Search Bar Styles */
#search-container {
  margin-top: 20px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.search-results-header {
  width: 100%;
  text-align: center;
  margin-bottom: 20px;
  padding: 15px;
  background: linear-gradient(135deg, #28a745, #20c997);
  color: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(40, 167, 69, 0.2);
}

.search-results-header h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
}

#search-form {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

#search-input {
  padding: 12px 16px;
  font-size: 1rem;
  border-radius: 8px;
  border: 2px solid #ddd;
  width: 320px;
  transition: all 0.3s ease;
  outline: none;
}

#search-input:focus {
  border-color: #007bff;
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
  transform: translateY(-1px);
}

#search-input::placeholder {
  color: #999;
  font-style: italic;
}

#search-button,
#clear-button {
  padding: 12px 16px;
  border: none;
  cursor: pointer;
  border-radius: 5px;
  font-size: 1.2rem;
  transition: all 0.3s ease;
  min-width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#search-button {
  background-color: #28a745;
  color: white;
  margin-left: 5px;
}

#search-button:hover {
  background-color: #218838;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(40, 167, 69, 0.3);
}

#clear-button {
  background-color: #dc3545;
  color: white;
  margin-left: 5px;
}

#clear-button:hover {
  background-color: #c82333;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(220, 53, 69, 0.3);
}

.word-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.word-info {
  flex-grow: 1;
}

.word-level {
  font-size: 1.2rem;
  font-weight: bold;
  color: #007bff;
  margin-left: 20px;
}

.level-group {
  margin-bottom: 25px;
  width: 100%;
}

.level-header {
  cursor: pointer;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  background: linear-gradient(135deg, #007bff, #0056b3);
  color: white;
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 15px;
  gap: 10px;
  box-shadow: 0 2px 8px rgba(0, 123, 255, 0.2);
  transition: all 0.3s ease;
  font-weight: 600;
  font-size: 1.1rem;
}

.level-header:hover {
  background: linear-gradient(135deg, #0056b3, #004494);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.collapse-btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  margin-left: auto;
  color: white;
  border-radius: 4px;
  padding: 4px 8px;
  transition: all 0.3s ease;
}

.collapse-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.level-words-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  padding: 10px 0;
}

.level-words-container .word-item {
  width: calc(50% - 40px);
  margin: 10px;
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.level-words-container .word-item:hover {
  border-color: #007bff;
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0, 123, 255, 0.15);
}

/* Advertisement Styles */
.ad-item {
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  border: 2px dashed #dee2e6 !important;
  position: relative;
  overflow: hidden;
}

.ad-item:hover {
  border-color: #28a745 !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(40, 167, 69, 0.2);
}

.ad-content {
  padding: 15px;
  text-align: center;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.ad-label {
  font-size: 0.8rem;
  color: #6c757d;
  margin-bottom: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Google AdSense Styles */
.adsense-ad {
  background: linear-gradient(135deg, #fff, #f8f9fa);
  border-radius: 8px;
  min-height: 100px;
}

.adsense-ad .adsbygoogle {
  border-radius: 5px;
}

/* Banner Ad Styles */
.banner-ad {
  background: linear-gradient(135deg, #e3f2fd, #bbdefb);
}

.banner-placeholder img {
  transition: transform 0.3s ease;
  cursor: pointer;
}

.banner-placeholder img:hover {
  transform: scale(1.02);
}

/* Native Ad Styles */
.native-ad {
  background: linear-gradient(135deg, #fff3e0, #ffe0b2);
  text-align: left;
}

.native-ad-content h4 {
  color: #e65100;
  margin: 0 0 8px 0;
  font-size: 1.1rem;
}

.native-ad-content p {
  color: #5d4037;
  margin: 0 0 12px 0;
  font-size: 0.9rem;
  line-height: 1.4;
}

.ad-cta-button {
  background: linear-gradient(135deg, #ff9800, #f57c00);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.3s ease;
  align-self: flex-start;
}

.ad-cta-button:hover {
  background: linear-gradient(135deg, #f57c00, #ef6c00);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(245, 124, 0, 0.3);
}

/* Video Ad Styles */
.video-ad {
  background: linear-gradient(135deg, #f3e5f5, #e1bee7);
}

.video-placeholder {
  background: #000;
  border-radius: 8px;
  position: relative;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.video-placeholder:hover {
  transform: scale(1.02);
}

.video-thumbnail {
  color: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 0.9rem;
}

.play-icon {
  font-size: 2rem;
  margin-bottom: 5px;
  opacity: 0.9;
  transition: opacity 0.3s ease;
}

.video-placeholder:hover .play-icon {
  opacity: 1;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
  /* Header Mobile */
  header h1 {
    font-size: 1.8rem;
    margin: 10px 0;
  }

  header p {
    font-size: 0.9rem;
    margin: 5px 0;
  }

  /* Navigation Mobile */
  nav ul {
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 10px;
  }

  nav ul li button {
    padding: 8px 12px;
    font-size: 0.9rem;
  }

  /* Search Container Mobile */
  #search-container {
    padding: 15px 10px;
  }

  #search-form {
    flex-direction: column;
    gap: 15px;
  }

  #search-input {
    width: 100%;
    max-width: none;
    font-size: 16px; /* Prevents zoom on iOS */
  }

  #search-button,
  #clear-button {
    width: 120px;
    align-self: center;
  }

  /* Word Items Mobile */
  .word-item {
    width: calc(100% - 20px) !important;
    margin: 10px !important;
    padding: 15px;
    font-size: 0.95rem;
  }

  .word-info {
    padding-right: 50px; /* Space for play button */
  }

  .play-button {
    right: 15px;
    font-size: 1.4rem;
    padding: 8px;
    background: rgba(0, 123, 255, 0.1);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Navigation Mobile */
  .navigation {
    flex-direction: column;
    gap: 15px;
    padding: 20px 10px;
  }

  .navigation button {
    padding: 12px 24px;
    font-size: 1rem;
    min-width: 120px;
  }

  /* Level Groups Mobile */
  .level-header {
    padding: 12px;
    font-size: 1rem;
  }

  .level-words-container {
    gap: 10px;
    padding: 5px;
  }

  /* Ad Adjustments Mobile */
  .ad-item {
    width: calc(100% - 20px) !important;
    margin: 10px !important;
  }

  .ad-content {
    padding: 12px;
  }

  .native-ad-content h4 {
    font-size: 1rem;
  }

  .native-ad-content p {
    font-size: 0.85rem;
  }

  /* Admin Panel Mobile */
  #ad-settings {
    margin: 15px 10px !important;
    max-width: none !important;
  }

  /* Scroll Buttons Mobile */
  .activer,
  .activel {
    bottom: 80px; /* Above mobile browser bars */
    font-size: 1.1rem;
    padding: 8px 12px;
  }

  /* Words per page Mobile */
  #words-per-page {
    padding: 0 15px;
    font-size: 0.9rem;
  }

  #page-size,
  #translation-language {
    padding: 8px 12px;
    font-size: 0.9rem;
  }
}

/* Small Mobile Phones */
@media (max-width: 480px) {
  header h1 {
    font-size: 1.5rem;
  }

  nav ul li button {
    padding: 6px 10px;
    font-size: 0.8rem;
  }

  .word-item {
    padding: 12px;
    font-size: 0.9rem;
  }

  .navigation button {
    padding: 10px 20px;
    font-size: 0.9rem;
  }

  #search-input {
    padding: 10px 14px;
  }

  #search-button,
  #clear-button {
    padding: 10px 14px;
    width: 100px;
  }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
  /* Larger touch targets */
  nav ul li button {
    min-height: 44px;
    min-width: 44px;
  }

  .play-button {
    min-height: 44px;
    min-width: 44px;
  }

  .collapse-btn {
    min-height: 44px;
    min-width: 44px;
  }

  /* Remove hover effects on touch devices */
  .word-item:hover {
    transform: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }

  .level-header:hover {
    transform: none;
  }
}

/* Ad Animation */
@keyframes fadeInAd {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.ad-item {
  animation: fadeInAd 0.5s ease-out;
}