:root {
  --bg-main: #f5f7fb;
  --sidebar-bg: #111827;
  --sidebar-hover: #1f2937;
  --primary: #2563eb;
  --text-light: #ffffff;
  --text-dark: #1f2937;
  --card-bg: #ffffff;
  --border: #e5e7eb;
}

/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, -apple-system, sans-serif;
}


 .campoIns{
    padding:10px;
    width:400px;
    border:1px solid #555555;
    background:#1f2937;
    color:#c0c0c0;
    font-size:18px;
  }

.bottone_iw{
   padding:10px;
   width:200px;
   background:#2563eb;
   color:#FFF;
   font-size:18px;
   border: none;  
 }


body {
  display: flex;
  height: 100vh;
  background: var(--bg-main);
}

a {
    color: white;
    text-decoration: none;
}

.riga{
     display: flex;
    width: 100%;
    /*border: 1px solid red;*/
}
.cella{
    border-bottom: 1px solid #555555;
    /*border: 1px solid #555555;*/
    width: 200px;
    /*padding-right: 20px;*/
    padding: 5px;
}

/* Sidebar */
.sidebar {
  width: 250px;
  background: var(--sidebar-bg);
  color: var(--text-light);
  display: flex;
  flex-direction: column;
  padding: 20px 0;
}

.sidebar h2 {
  text-align: center;
  margin-bottom: 30px;
  font-size: 20px;
}

.nav-item {
  padding: 15px 25px;
  cursor: pointer;
  transition: 0.3s;
}

.nav-item:hover {
  background: var(--sidebar-hover);
}

.nav-item.active {
  background: var(--primary);
}

/* Main */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  height: 60px;
  background: var(--sidebar-bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  color: var(--text-light);
  align-items: center;
  justify-content: space-between;
  padding: 0 25px;
}

.header h1 {
  font-size: 18px;
  color: var(--text-light);
}

/* Content */
.content {
  padding: 25px;
  flex: 1;
  overflow-y: auto;
  background: #1f2937;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.card h3 {
  margin-bottom: 10px;
  color: var(--text-dark);
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    width: 200px;
  }
}