/* Stile principale per il sito sui meccanismi addittivi */

/* Importazione font */
@import url('https://fonts.googleapis.com/css2?family=Nunito+Sans:wght@400;600;700&display=swap');

/* Variabili colori */
:root {
    --primary-color: #0056b3;
    --secondary-color: #6c757d;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --border-color: #dee2e6;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Reset e stili base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Nunito Sans', sans-serif;
    font-size: 18px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header e navigazione */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    margin-right: 20px;
}

.logo a, .logo h1 {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

nav {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links li {
    margin-left: 1.5rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
    padding: 0.5rem 0;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--light-color);
}

/* Menu hamburger per mobile */
.hamburger-menu {
    display: none;
    cursor: pointer;
}

.hamburger-menu .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: white;
    transition: all 0.3s ease;
}

/* Hero section */
.hero {
    padding: 3rem 0;
    text-align: center;
}

.hero-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.subtitle {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

/* Contenuto principale */
main {
    padding: 2rem 0;
}

section {
    margin-bottom: 4rem;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    margin-top: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1.5rem;
}

ul, ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Immagini e didascalie */
.section-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 2rem 0;
    box-shadow: var(--shadow);
    display: block;
}

.img-caption {
    text-align: center;
    font-style: italic;
    color: var(--secondary-color);
    margin-top: 0.5rem;
}

/* Box di esempi concreti */
.example-box {
    background-color: #f8f9fa;
    border-left: 4px solid #0056b3;
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 4px 4px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.example-box h4 {
    color: #0056b3;
    margin-top: 0;
    font-weight: 700;
}

.source-reference {
    font-style: italic;
    font-size: 0.9rem;
    color: var(--secondary-color);
}

/* Tabelle di confronto */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    box-shadow: var(--shadow);
    border-radius: 4px;
    overflow: hidden;
}

.comparison-row {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-cell {
    flex: 1;
    padding: 1rem;
}

.comparison-cell.header {
    background-color: var(--primary-color);
    color: white;
    font-weight: 700;
}

.comparison-row:nth-child(even) {
    background-color: var(--light-color);
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 2rem 0;
    margin-top: 4rem;
}

footer p {
    margin-bottom: 0.5rem;
}

footer a {
    color: var(--light-color);
}

/* Media queries per responsività */
@media (max-width: 768px) {
    .hamburger-menu {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: var(--primary-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
        padding: 10px 0;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links li {
        margin: 10px 0;
    }
    
    .hamburger-menu.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger-menu.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger-menu.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    .comparison-row {
        flex-direction: column;
    }
    
    .comparison-cell {
        padding: 0.75rem;
    }
    
    .comparison-cell.header {
        text-align: center;
    }
}