/* =========================
   Reset di base
========================= */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Helvetica', sans-serif;
}

body {
    background-color: #f5f6fa;
    color: #2c3e50;
    display: flex;
    min-height: 100vh;
    overflow: hidden; /* prevent body scroll, let sidebar and main handle their own scroll */
}