:root {
  --electric-purple: #bf00ff;
  --electric-turquoise: #00ffff;
  --dark-purple: #1a0033;
  --darker-purple: #0d0019;
  --medium-purple: #2d0052;
  --glow-purple: rgba(191, 0, 255, 0.3);
  --glow-turquoise: rgba(0, 255, 255, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, var(--dark-purple) 0%, var(--darker-purple) 100%);
  color: var(--electric-turquoise);
  min-height: 100vh;
  overflow-x: hidden;
}

header {
  background: var(--darker-purple);
  padding: 1.5rem 2rem;
  border-bottom: 2px solid var(--electric-purple);
  box-shadow: 0 4px 20px var(--glow-purple);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

h1 {
  font-size: 2rem;
  background: linear-gradient(90deg, var(--electric-purple), var(--electric-turquoise));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px var(--glow-purple);
  letter-spacing: 2px;
}

nav {
  display: flex;
  gap: 1rem;
  align-items: center;
}

nav a {
  color: var(--electric-turquoise);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border: 1px solid var(--electric-turquoise);
  border-radius: 5px;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

nav a:hover, nav a.active {
  background: var(--electric-turquoise);
  color: var(--darker-purple);
  box-shadow: 0 0 15px var(--glow-turquoise);
  transform: translateY(-2px);
}

.menu-btn {
  background: var(--medium-purple);
  border: 2px solid var(--electric-purple);
  color: var(--electric-turquoise);
  padding: 0.6rem 1.2rem;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
  position: relative;
}

.menu-btn:hover {
  background: var(--electric-purple);
  box-shadow: 0 0 20px var(--glow-purple);
  transform: scale(1.05);
}

.menu-dropdown {
  position: fixed;
  top: auto;
  right: 2rem;
  background: var(--darker-purple);
  border: 2px solid var(--electric-purple);
  border-radius: 8px;
  padding: 1rem;
  min-width: 250px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 8px 30px var(--glow-purple);
  display: none;
  z-index: 1000;
  margin-top: 0.5rem;
}

.menu-dropdown.active {
  display: block;
}

.menu-section {
  margin-bottom: 1rem;
}

.menu-section:last-child {
  margin-bottom: 0;
}

.menu-section h3 {
  color: var(--electric-purple);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.menu-section label {
  display: block;
  padding: 0.25rem 0.4rem;
  color: var(--electric-turquoise);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.85rem;
  line-height: 1.3;
}

.menu-section label:hover {
  background: var(--medium-purple);
  border-radius: 4px;
}

.menu-section input[type="checkbox"],
.menu-section input[type="radio"] {
  margin-right: 0.5rem;
  accent-color: var(--electric-purple);
}

.menu-section button {
  width: 100%;
  padding: 0.6rem;
  background: var(--electric-purple);
  border: none;
  color: white;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.menu-section button:hover {
  background: var(--electric-turquoise);
  color: var(--darker-purple);
  box-shadow: 0 0 15px var(--glow-turquoise);
}

main {
  padding: 2rem;
  max-width: 1600px;
  margin: 0 auto;
}

.controls {
  background: var(--darker-purple);
  padding: 1.5rem;
  border-radius: 10px;
  margin-bottom: 2rem;
  border: 1px solid var(--medium-purple);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.control-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.control-row:last-child {
  margin-bottom: 0;
}

.search-box, .filter-group {
  flex: 1;
  min-width: 200px;
}

.search-box label, .filter-group label {
  display: block;
  color: var(--electric-purple);
  font-size: 0.85rem;
  margin-bottom: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.search-box input, .filter-group select {
  width: 100%;
  padding: 0.6rem;
  background: var(--medium-purple);
  border: 1px solid var(--electric-purple);
  border-radius: 5px;
  color: var(--electric-turquoise);
  font-size: 0.9rem;
}

.search-box input:focus, .filter-group select:focus {
  outline: none;
  border-color: var(--electric-turquoise);
  box-shadow: 0 0 10px var(--glow-turquoise);
}

.table-container {
  background: var(--darker-purple);
  border-radius: 10px;
  overflow-x: auto;
  border: 1px solid var(--medium-purple);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 800px;
}

thead {
  background: var(--medium-purple);
  position: sticky;
  top: 0;
  z-index: 10;
}

th {
  padding: 1rem;
  text-align: left;
  color: var(--electric-purple);
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  border-bottom: 2px solid var(--electric-purple);
  transition: all 0.3s ease;
  position: relative;
}

th:hover {
  background: rgba(191, 0, 255, 0.2);
}

th.sortable::after {
  content: '⇅';
  position: absolute;
  right: 0.5rem;
  opacity: 0.5;
  font-size: 0.8rem;
}

th.sorted-asc::after {
  content: '↑';
  opacity: 1;
  color: var(--electric-turquoise);
}

th.sorted-desc::after {
  content: '↓';
  opacity: 1;
  color: var(--electric-turquoise);
}

td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--medium-purple);
  color: var(--electric-turquoise);
  font-size: 0.9rem;
  white-space: nowrap;
}

tbody tr {
  transition: all 0.2s ease;
}

tbody tr:hover {
  background: rgba(191, 0, 255, 0.1);
  box-shadow: inset 0 0 0 1px var(--electric-purple);
}

tbody tr:nth-child(even) {
  background: rgba(0, 0, 0, 0.2);
}

tbody tr:nth-child(even):hover {
  background: rgba(191, 0, 255, 0.15);
}

.hidden-column {
  display: none;
}

footer {
  background: var(--darker-purple);
  padding: 1.5rem;
  text-align: center;
  border-top: 2px solid var(--electric-purple);
  margin-top: 3rem;
  color: var(--electric-turquoise);
  font-size: 0.85rem;
}

.loading {
  text-align: center;
  padding: 3rem;
  color: var(--electric-purple);
  font-size: 1.2rem;
}

.error {
  background: rgba(255, 0, 0, 0.2);
  border: 1px solid #ff0000;
  color: #ff6666;
  padding: 1rem;
  border-radius: 5px;
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 1rem;
  }
  
  nav {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  h1 {
    font-size: 1.5rem;
  }
  
  .control-row {
    flex-direction: column;
  }
}