* {
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}

body {
    background: #f5f6fa;
}

/* SIDEBAR */
#sidebar {
  width: 220px;
  background: #1a1a1a;
  padding: 20px;
  transition: transform 0.3s ease;
}
#sidebar ul > li:hover {
  background: #000;
}

/* HEADER */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  border-bottom: 1px solid #2a2a2a;
}

/* FOOTER */
.footer {
  text-align: center;
  padding: 10px;
  font-size: 12px;
  color: #888;
  background: #000;
}

/* WIDGETS */
.widget-container {
    margin-bottom: 20px;
}
.widget-card {
    background: white;
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

@media (max-width: 768px) {
  h1 { font-size: 18px; }
  h2 { font-size: 16px; }
}