/* SYSTEM RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: #f6f8fa;
    color: #24292f;
    line-height: 1.5;
}

.text-red { color: #d9381e; }

/* NAVBAR & MENU MOBILE PROTETTO */
.navbar {
    background-color: #ffffff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    position: relative;
}

.logo {
    text-decoration: none;
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: 0.5px;
    color: #1f2328;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 15px;
}

.nav-menu li a {
    text-decoration: none;
    color: #57606a;
    padding: 8px 12px;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-menu li a:hover, .nav-menu li a.active {
    color: #d9381e;
    background-color: #fff5f4;
}

.btn-login {
    background-color: #24292f;
    color: #ffffff !important;
}

.btn-login:hover {
    background-color: #d9381e !important;
    color: #ffffff !important;
}

/* Gestione Hamburger per Smartphone */
.menu-toggle { display: none; }
.hamburger { display: none; cursor: pointer; flex-direction: column; gap: 4px; }
.hamburger span { width: 22px; height: 3px; background-color: #24292f; border-radius: 2px; }

/* HERO */
.hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #ffffff;
    padding: 70px 20px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 15px;
    letter-spacing: -0.5px;
}

.hero p {
    font-size: 1.1rem;
    color: #94a3b8;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    padding: 10px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    margin: 5px;
    transition: transform 0.1s;
}

.btn:active { transform: scale(0.98); }

.btn-main { background-color: #d9381e; color: #ffffff; }
.btn-main:hover { background-color: #b92c16; }
.btn-outline { border: 1px solid #94a3b8; color: #ffffff; }
.btn-outline:hover { background-color: rgba(255,255,255,0.05); }

/* EDITORI BAR */
.editori-bar {
    background-color: #ffffff;
    border-bottom: 1px solid #e1e4e8;
    padding: 15px 20px;
}

.editori-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.editori-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    color: #57606a;
    letter-spacing: 1px;
}

.editori-logos { display: flex; gap: 15px; }

.brand-badge {
    padding: 6px 16px;
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.9rem;
    color: #ffffff;
}

.zanichelli { background-color: #d9381e; }
.atlas { background-color: #0284c7; }

/* SERVICES GRID DISSOLTA SU TABLET/MOBILE */
.main-content {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

.grid-services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.card {
    background-color: #ffffff;
    border: 1px solid #e1e4e8;
    border-radius: 8px;
    padding: 30px;
    display: flex;
    flex-direction: column;
}

.card-icon {
    font-size: 2rem;
    color: #d9381e;
    margin-bottom: 15px;
}

.card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #1f2328;
}

.card p {
    color: #57606a;
    font-size: 0.95rem;
    margin-bottom: 20px;
    flex-grow: 1;
}

.card-link {
    text-decoration: none;
    color: #d9381e;
    font-weight: 600;
    font-size: 0.95rem;
}

.card-link:hover { text-decoration: underline; }

/* Link Digitali Specifici */
.digital-links { display: flex; flex-direction: column; gap: 10px; }
.lnk-dig {
    text-decoration: none;
    color: #24292f;
    background-color: #f6f8fa;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid #e1e4e8;
}
.lnk-dig:hover { background-color: #eaeef2; color: #d9381e; }

/* FOOTER */
footer {
    background-color: #24292f;
    color: #8c959f;
    padding: 40px 20px 20px 20px;
    margin-top: 60px;
    font-size: 0.9rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    border-bottom: 1px solid #3c444d;
    padding-bottom: 20px;
}

.footer-block h4 { color: #ffffff; margin-bottom: 10px; }
.footer-block a { color: #8c959f; text-decoration: none; }
.footer-block a:hover { color: #ffffff; }
.footer-sub { font-weight: 400; color: #8c959f; font-size: 0.85rem; }
.privacy-link { text-decoration: underline !important; }
.footer-bottom { text-align: center; padding-top: 20px; font-size: 0.8rem; }

/* RESPONSIVE MEDIA QUERIES STRUTTURATE */
@media (max-width: 768px) {
    .hamburger { display: flex; }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 100%;
        left: 0;
        background-color: #ffffff;
        box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        padding: 10px 20px;
        border-top: 1px solid #e1e4e8;
    }

    .nav-menu li { width: 100%; }
    .nav-menu li a { display: block; padding: 10px 0; }
    
    /* Attivazione Menu ad click via CSS */
    .menu-toggle:checked ~ .nav-menu { display: flex; }
    
    .hero h1 { font-size: 1.8rem; }
    .hero p { font-size: 1rem; }
    
    .text-right-md { text-align: left !important; }
    .footer-container { flex-direction: column; }
}