/* --- VARIABILI GLOBALI (I COLORI DEL LOGO) --- */
:root {
    --primary-green: #009975; /* Verde Smeraldo (chiave di violino) */
    --primary-magenta: #e94e77; /* Magenta/Fucsia (libro) */
    --primary-teal: #2c78b3;   /* Blu Ciano/Acqua (maschera) */
    --text-dark: #333333;
    --text-light: #ffffff;
    --bg-light: #f9f9f9;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

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

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-light);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

/* --- INTESTAZIONE (HEADER) --- */
.main-header {
    background-color: var(--text-light);
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* --- GESTIONE DEL LOGO (DIMENSIONI ORIGINALI) --- */
.logo-img {
    width: auto;   /* Mantiene le proporzioni originali */
    height: auto;  /* Rispetta le dimensioni native reali del file */
    display: block;
}

/* --- NAVIGAZIONE --- */
.main-nav ul {
    display: flex;
    gap: 25px;
}

.main-nav a {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-dark);
    position: relative;
    padding-bottom: 5px;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-magenta);
}

.main-nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-magenta);
    transition: width 0.3s;
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

/* --- SEZIONE PRINCIPALE (MAIN) --- */
.main-content {
    padding: 50px 0;
    flex: 1;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--primary-green);
    margin-bottom: 20px;
}

p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

/* --- GRIGLIE E BLOCCHI --- */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-top: 4px solid var(--primary-teal);
}

.card h3 {
    color: var(--primary-teal);
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--primary-teal);
    color: var(--text-light);
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 4px;
    margin-top: 10px;
}

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

/* --- PIE DI PAGINA (FOOTER) --- */
.main-footer {
    background-color: var(--text-dark);
    color: var(--text-light);
    padding: 30px 0;
    margin-top: auto;
    font-size: 0.9rem;
    text-align: center;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
}
/* --- STILE BOX INTRODUZIONE (STILE 2) --- */
.intro-card {
    background: #ffffff;
    border: 1px solid #eaeaea;
    border-top: 4px solid var(--primary-teal);
    padding: 30px;
    border-radius: 6px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    margin-bottom: 40px;
    font-size: 1.15rem;
    line-height: 1.7;
}