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

body {
  font-family: "Arial", sans-serif;
  background: #f5f5f5;
}

nav {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  padding: 1rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.logo {
  font-size: 2rem;
  font-weight: bold;
  color: white;
  letter-spacing: 3px;
  text-decoration: none;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

nav a:hover {
  color: #ff6b35;
}

.admin-page {
  padding: 3rem 5%;
}

.back-btn {
  background: #1e3c72;
  color: white;
  padding: 0.7rem 1.5rem;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  margin-bottom: 2rem;
  font-size: 1rem;
  text-decoration: none;
  display: inline-block;
}

.back-btn:hover {
  background: #2a5298;
}

.page-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: #1e3c72;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.stat-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 2rem;
  border-radius: 15px;
  color: white;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.stat-card:nth-child(2) {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.stat-card:nth-child(3) {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.stat-card:nth-child(4) {
  background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.stat-card h4 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.stat-card p {
  font-size: 1.1rem;
  opacity: 0.9;
}

.admin-section {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  margin-bottom: 2rem;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.admin-section h3 {
  color: #1e3c72;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  border-bottom: 2px solid #1e3c72;
  padding-bottom: 0.5rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: #1e3c72;
  font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.8rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1rem;
  font-family: Arial, sans-serif;
  transition: border 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: #1e3c72;
}

.submit-btn {
  background: #1e3c72;
  color: white;
  padding: 0.8rem 2rem;
  border: none;
  border-radius: 25px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s;
}

.submit-btn:hover {
  background: #ff6b35;
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(255, 107, 53, 0.4);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

th,
td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid #eee;
}

th {
  background: #1e3c72;
  color: white;
  font-weight: 600;
}

tr:hover {
  background: #f9f9f9;
}

.action-buttons {
  display: flex;
  gap: 0.5rem;
}

.edit-btn {
  background: #4caf50;
  color: white;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.9rem;
}

.edit-btn:hover {
  background: #45a049;
}

.delete-btn {
  background: #ff3b3b;
  color: white;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.9rem;
}

.delete-btn:hover {
  background: #e63232;
}

.table-container {
  overflow-x: auto;
}

footer {
  background: #1e3c72;
  color: white;
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}