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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
  color: #333;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.nav {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 10px;
  padding: 15px 20px;
  margin-bottom: 20px;
  display: flex;
  gap: 15px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav a {
  color: #667eea;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 5px;
  transition: all 0.3s;
  font-weight: 500;
}

.nav a:hover {
  background: #f0f0f0;
  color: #764ba2;
}

.nav a.active {
  background: #667eea;
  color: white;
}

.card {
  background: white;
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.card h1 {
  color: #667eea;
  margin-bottom: 20px;
  font-size: 28px;
}

.card h2 {
  color: #667eea;
  margin-bottom: 20px;
  font-size: 24px;
}

.alert {
  background: #fee;
  color: #c33;
  padding: 12px;
  border-radius: 5px;
  margin-bottom: 20px;
  border-left: 4px solid #c33;
}

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

label {
  font-weight: 500;
  color: #555;
  margin-bottom: 5px;
}

input[type="text"],
input[type="password"],
input[type="email"],
select {
  padding: 12px;
  border: 2px solid #e0e0e0;
  border-radius: 5px;
  font-size: 16px;
  transition: border-color 0.3s;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
select:focus {
  outline: none;
  border-color: #667eea;
}

button {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 5px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

button:active {
  transform: translateY(0);
}

button.danger {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

button.danger:hover {
  box-shadow: 0 4px 12px rgba(245, 87, 108, 0.4);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

table thead {
  background: #f8f9fa;
}

table th {
  padding: 12px;
  text-align: left;
  font-weight: 600;
  color: #555;
  border-bottom: 2px solid #e0e0e0;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.5px;
}

table td {
  padding: 12px;
  border-bottom: 1px solid #e0e0e0;
}

table tbody tr:hover {
  background: #f8f9fa;
}

table tbody tr:last-child td {
  border-bottom: none;
}

.status-pending {
  color: #d48b00;
  font-weight: 600;
}

.status-approved {
  color: #2a9d8f;
  font-weight: 600;
}

.status-denied {
  color: #e76f51;
  font-weight: 600;
}

form[style*="display:inline"] {
  display: inline;
  margin-right: 10px;
}

form[style*="display:inline"] button {
  padding: 8px 16px;
  font-size: 14px;
}