:root {
  --primary-color: #3498db;
  --primary-hover: #2980b9;
  --secondary-color: #2ecc71;
  --background-color: #f4f6f8;
  --surface-color: #ffffff;
  --text-color: #2c3e50;
  --text-color-secondary: #7f8c8d;
  --error-color: #e74c3c;
  --success-color: #27ae60;
  --warning-color: #f39c12;
  --sidebar-width: 250px;
  --sidebar-collapsed-width: 70px;
  --header-height: 60px;
  --border-radius: 8px;
  --transition-speed: 0.3s;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color var(--transition-speed), color var(--transition-speed);
}

.dashboard {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  background-color: var(--surface-color);
  box-shadow: var(--box-shadow);
  transition: width var(--transition-speed) ease, background-color var(--transition-speed);
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 1000;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

.sidebar-closed .sidebar {
  width: var(--sidebar-collapsed-width);
}

.sidebar-header {
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.avatar {
  width: 48px;
  height: 48px;
  background-color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.5rem;
  color: var(--surface-color);
}

.user-info {
  margin-left: 1rem;
}

.user-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.user-info p {
  font-size: 0.875rem;
  color: var(--text-color-secondary);
}

.sidebar-toggle {
  position: fixed;
  top: 1rem;
  left: var(--sidebar-width);
  z-index: 1001;
  background-color: var(--primary-color);
  color: var(--surface-color);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: left var(--transition-speed) ease, background-color var(--transition-speed);
}

.sidebar-closed .sidebar-toggle {
  left: var(--sidebar-collapsed-width);
}

.sidebar-menu {
  list-style-type: none;
  padding: 1rem 0;
}

.sidebar-menu li a {
  display: flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  color: var(--text-color);
  text-decoration: none;
  transition: all var(--transition-speed);
}

.sidebar-menu li a:hover,
.sidebar-menu li.active a {
  background-color: rgba(0, 0, 0, 0.05);
  color: var(--primary-color);
}

.sidebar-menu li a svg {
  font-size: 1.25rem;
  margin-right: 1rem;
}

.sidebar-closed .sidebar-menu li a span {
  display: none;
}

.sidebar-footer {
  margin-top: auto;
  padding: 1rem 1.5rem;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.logout-btn,
.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.75rem;
  background-color: var(--primary-color);
  color: var(--surface-color);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-speed);
  margin-bottom: 0.5rem;
}

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

.logout-btn svg,
.theme-toggle-btn svg {
  margin-right: 0.5rem;
}

.content {
  flex-grow: 1;
  margin-left: var(--sidebar-width);
  padding: 2rem;
  transition: margin-left var(--transition-speed);
}

.sidebar-closed .content {
  margin-left: var(--sidebar-collapsed-width);
}

.card {
  background-color: var(--surface-color);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--text-color-secondary);
  border-radius: var(--border-radius);
  font-size: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-speed);
}

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

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

.btn-success {
  background-color: var(--success-color);
  color: var(--surface-color);
}

.btn-success:hover {
  background-color: #219653;
}

.btn-warning {
  background-color: var(--warning-color);
  color: var(--surface-color);
}

.btn-warning:hover {
  background-color: #e67e22;
}

.btn-danger {
  background-color: var(--error-color);
  color: var(--surface-color);
}

.btn-danger:hover {
  background-color: #c0392b;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.dashboard-card {
  background-color: var(--surface-color);
  border-radius: var(--border-radius);
  padding: 1rem;
  text-align: center;
  box-shadow: var(--box-shadow);
}

.dashboard-card h3 {
  font-size: 0.875rem;
  color: var(--text-color-secondary);
  margin-bottom: 0.5rem;
}

.dashboard-card p {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-color);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--background-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: 1rem;
}

.progress {
  height: 100%;
  background-color: var(--primary-color);
  transition: width var(--transition-speed) ease-in-out;
}

.log-container {
  margin-top: 1.5rem;
}

.log-list {
  max-height: 200px;
  overflow-y: auto;
  background-color: var(--background-color);
  border-radius: var(--border-radius);
  padding: 1rem;
  font-size: 0.875rem;
}

.error {
  color: var(--error-color);
  background-color: rgba(231, 76, 60, 0.1);
  padding: 0.75rem;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
}

.success-message {
  color: var(--success-color);
  background-color: rgba(46, 204, 113, 0.1);
  padding: 0.75rem;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar-open .sidebar {
    transform: translateX(0);
  }

  .content {
    margin-left: 0;
    padding: 1rem;
  }

  .sidebar-closed .content {
    margin-left: 0;
  }

  .sidebar-toggle {
    left: 1rem;
  }

  .sidebar-closed .sidebar-toggle {
    left: 1rem;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}