body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  left: -280px;
  top: 0;
  width: 280px;
  height: 100vh;
  padding-top: 110px;
  box-sizing: border-box;
  background: linear-gradient(180deg, #010015 0%, #060043 100%);
  transition: left 0.3s ease;
  z-index: 1000;
  overflow-y: auto;
  box-shadow: 4px 0 15px rgba(0, 0, 0, 0.3);
}

.sidebar.active {
  left: 0;
}

.sidebar-header {
  padding: 20px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h3 {
  color: white;
  margin: 0;
  font-size: 1.3rem;
  font-weight: 600;
}

.nav-category {
  padding: 15px 20px 10px;
  color: rgb(254, 31, 31);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

.sidebar .nav-link {
  color: #ecf0f1;
  padding: 12px 20px;
  transition: all 0.3s;
  border-left: 3px solid transparent;
}

.sidebar .nav-link:hover {
  background: rgba(0, 0, 0, 0.2);
  border-left-color: #3498db;
  padding-left: 25px;
}

.sidebar .nav-link i {
  margin-right: 10px;
  width: 20px;
}

.dropdown-menu {
  background: rgba(0, 0, 0, 0.3);
  border: none;
  margin-left: 20px;
}

.dropdown-item {
  color: #bdc3c7;
  padding: 8px 20px;
  font-size: 0.9rem;
}

.dropdown-item:hover {
  background: rgba(52, 152, 219, 0.3);
  color: white;
}

.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
  background: white;
  padding: 20px 30px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  z-index: 1001;
}

.hamburger {
  background: white;
  border: none;
  border-radius: 8px;
  padding: 12px 15px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: all 0.3s;
}

.hamburger:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background: #2c3e50;
  margin: 5px 0;
  transition: 0.3s;
  border-radius: 2px;
}

.page-title-inline {
  background: white;
  border-radius: 15px;
  padding: 15px 25px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.page-title-inline h1 {
  margin: 0;
  color: #2c3e50;
  font-weight: 700;
  font-size: 1.5rem;
}

.page-title-inline p {
  margin: 0;
  color: #000000;
  font-size: 1rem;
}

.main-content {
  margin: 0 auto;
  padding: 180px 30px 30px;
  max-width: 1200px;
  transition: margin-left 0.3s;
}

.page-header {
  background: white;
  border-radius: 15px;
  padding: 40px;
  margin-bottom: 30px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.page-header h1 {
  color: #2c3e50;
  font-weight: 700;
  margin-bottom: 10px;
}

.page-header p {
  color: #000000;
  font-size: 1.1rem;
}

.breadcrumb {
  background: transparent;
  padding: 0;
  margin-bottom: 20px;
}

.breadcrumb-item a {
  color: #3498db;
  text-decoration: none;
}

.image-container {
  background: white;
  border-radius: 15px;
  padding: 20px;
  margin-bottom: 30px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.image-container img {
  width: 100%;
  border-radius: 10px;
}

.vocab-section {
  background: white;
  border-radius: 15px;
  padding: 40px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  margin-bottom: 30px;
}

.vocab-section h2 {
  color: #2c3e50;
  font-weight: 700;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
}

.vocab-section h2 i {
  margin-right: 15px;
  color: #3498db;
}

.vocab-table {
  margin-top: 20px;
}

.vocab-table thead {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.vocab-table thead th {
  padding: 20px;
  font-weight: 600;
  font-size: 1.5rem;
  border: none;
}

.vocab-table tbody tr {
  transition: all 0.3s;
  border-bottom: 1px solid #ecf0f1;
}

.vocab-table tbody tr:hover {
  background: #f8f9fa;
  transform: translateX(5px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.vocab-table td {
  padding: 20px;
  vertical-align: middle;
}

.french-term {
  font-size: 1.3rem;
  font-weight: 600;
  color: #2c3e50;
}

.phonetic {
  font-size: 1.1rem;
  color: #252525;
  font-style: normal;
  margin-top: 5px;
}

.english-term {
  font-size: 1.3rem;
  color: #34495e;
}

.grammar-note {
  background: linear-gradient(135deg, #e8f4f8 0%, #d4e9f7 100%);
  border-left: 4px solid #3498db;
  border-radius: 10px;
  padding: 25px;
  margin-bottom: 30px;
}

.grammar-note h4 {
  color: #2c3e50;
  font-weight: 600;
  margin-bottom: 15px;
}

.grammar-note p {
  color: #34495e;
  margin-bottom: 8px;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  display: none;
}

.overlay.active {
  display: block;
}
.heading {
  font-weight: 600;
  font-size: 1.2em;
}
.sand {
  background-color: saddlebrown;
}
.supplemental-section {
  background-color: #95feca;
  padding: 25px;
  border-radius: 10px;
  border-left: 4px solid #17a2b8;
  font-size: 1.2rem;
  line-height: 1.8;
}