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

:root {
    --primary: #2563eb; 
    --primary-dark: #1d4ed8;
    
    --text-dark: #1e293b;
    --text-light: #64748b;
    
    --bg-white: #ffffff;
    --bg-light: #f8fafc; 
    
    --border-color: #e2e8f0;
}

.dark-mode {
    --text-dark: #f8fafc; 
    --text-light: #94a3b8; 
    
    --bg-white: #0f172a; 
    --bg-light: #1e293b; 
    
    --border-color: #334155;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    transition: background-color 0.3s ease, color 0.3s ease;
}

header, .service-card, footer, section {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
}

.text-center { text-align: center; }
.section-padding { padding: 80px 0; }
.bg-light { background-color: var(--bg-light); }
.bg-dark { background-color: var(--text-dark); }
.text-white { color: var(--bg-white); }

/* --- HEADER --- */
header {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -1px;
}

nav ul { display: flex; }
nav ul li { margin-left: 30px; }
nav ul li a {
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}
nav ul li a:hover { color: var(--primary); }

/* --- HERO --- */
#hero {
    padding: 100px 0;
}

.badge {
    display: inline-block;
    background-color: #dbeafe;
    color: var(--primary);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

#hero h2 {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

#hero p {
    font-size: 18px;
    color: var(--text-light);
    max-width: 650px;
    margin: 0 auto 40px auto;
}

.btn {
    display: inline-block;
    background-color: var(--primary);
    color: var(--bg-white);
    padding: 14px 28px;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.2s;
}

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

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--bg-white);
    margin-top: 20px;
}
.btn-outline:hover {
    background-color: var(--bg-white);
    color: var(--text-dark);
}

/* --- SERVIZI --- */
.services-grid {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.service-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    flex: 1;
    transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.service-card h3 {
    color: var(--text-dark);
    margin-bottom: 15px;
    font-size: 20px;
}

.service-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* --- FOOTER --- */
footer {
    padding: 30px 0;
    font-size: 14px;
    color: var(--text-light);
    background-color: var(--bg-light);
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    header .container, .services-grid {
        flex-direction: column;
    }
    nav ul { margin-top: 20px; }
    nav ul li { margin: 0 15px; }
}