:root {
  --primary-color: #0086D6;
  --secondary-color: #FFFFFF;
  --background-color: #FFFFFF;
  --text-color: #07080D;
  --card-background: #FFFFFF;
  --navbar-height: 60px;
  --border-color: #E5E7EB;
}

.dark-theme {
  --primary-color: #0086D6;
  --secondary-color: #07080D;
  --background-color: #07080D;
  --text-color: #FFFFFF;
  --card-background: #1F2937;
  --border-color: #374151;
}

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

body {
  font-family: 'Roboto', Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
}

.navbar {
  background-color: var(--secondary-color);
  color: var(--primary-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
  height: var(--navbar-height);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.navbar-logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-theme-toggle {
  background-color: transparent;
  border: none;
  color: var(--text-color);
  font-size: 1.2rem;
  cursor: pointer;
}

.btn-logout {
  background-color: transparent;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s, color 0.3s;
  text-decoration: none;
}

.btn-logout:hover {
  background-color: var(--primary-color);
  color: var(--background-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  padding-top: calc(var(--navbar-height) + 2rem);
  padding-bottom: calc(var(--navbar-height) + 2rem);
}

h1, h2 {
  color: var(--text-color);
  margin-bottom: 1rem;
}

.card {
  background-color: var(--card-background);
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  padding: 1.5rem;
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.separator {
  height: 1px;
  background-color: var(--border-color);
  margin: 1.5rem 0;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

input[type="text"],
input[type="password"],
input[type="file"],
select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 1rem;
  background-color: var(--background-color);
  color: var(--text-color);
}

button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
  font-size: 1rem;
}

button:hover {
  background-color: #006bb3;
}

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

th, td {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

th {
  background-color: var(--card-background);
  font-weight: bold;
  color: var(--text-color);
}

.btn-delete {
  background-color: transparent;
  color: #e74c3c;
  border: 1px solid #e74c3c;
}

.btn-delete:hover {
  background-color: #e74c3c;
  color: white;
}

.error {
  color: #e74c3c;
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    height: auto;
    padding: 1rem;
  }

  .navbar-logo, .navbar-actions {
    margin-bottom: 0.5rem;
  }

  .container {
    padding-top: calc(var(--navbar-height) * 2 + 2rem);
  }

  table {
    font-size: 0.9rem;
  }
}

.footer {
  background-color: var(--secondary-color);
  color: var(--primary-color);
  text-align: center;
  padding: 1rem;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  border-top: 1px solid var(--border-color);
}

.notification-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
}

.notification {
  background-color: var(--card-background);
  color: var(--text-color);
  border-left: 4px solid var(--primary-color);
  padding: 12px 20px;
  margin-bottom: 10px;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-width: 300px;
  max-width: 400px;
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.3s, transform 0.3s;
}

.notification.show {
  opacity: 1;
  transform: translateY(0);
}

.notification-message {
  flex-grow: 1;
}

.notification-close {
  background: none;
  border: none;
  color: var(--text-color);
  cursor: pointer;
  font-size: 18px;
  padding: 0;
  margin-left: 10px;
}

.notification-success {
  border-left-color: #4CAF50;
}

.notification-error {
  border-left-color: #F44336;
}

.notification-info {
  border-left-color: #2196F3;
}