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

:root {
    --verde-delicato: #8B9D83;
    --verde-scuro: #5A6B52;
    --blu-navy: #2D3E50;
    --beige: #F5F1E8;
    --bianco: #FFFFFF;
    --grigio-chiaro: #F8F8F8;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    line-height: 1.7;
    color: var(--blu-navy);
    background-color: var(--bianco);
}

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

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--blu-navy);
}

h1 {
    font-size: 2rem;
    font-weight: 700;
}

h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
}

h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--verde-scuro);
    margin-top: 2rem;
}

h4 {
    font-size: 1.1rem;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
}

.lead {
    font-size: 1.15rem;
    font-weight: 400;
    line-height: 1.8;
}

a {
    color: var(--verde-scuro);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--blu-navy);
    text-decoration: underline;
}

/* Header / Hero */
.hero {
    background: linear-gradient(135deg, var(--verde-delicato) 0%, var(--verde-scuro) 100%);
    color: var(--bianco);
    text-align: center;
    padding: 60px 20px 40px;
}

.hero .logo {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    border-radius: 50%;
}

.hero h1 {
    color: var(--bianco);
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.hero .motto {
    font-style: italic;
    font-size: 1rem;
    margin-bottom: 5px;
    opacity: 0.95;
}

.hero .tagline {
    font-size: 1.1rem;
    margin-top: 15px;
    font-weight: 300;
}

/* Navigation */
.main-nav {
    background-color: var(--beige);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.main-nav .container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 15px 20px;
}

.main-nav a {
    color: var(--blu-navy);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s;
}

.main-nav a:hover {
    background-color: var(--verde-delicato);
    color: var(--bianco);
    text-decoration: none;
}

/* Sections */
.section {
    padding: 60px 20px;
}

.section-light {
    background-color: var(--bianco);
}

.section-dark {
    background-color: var(--beige);
}

.section-contact {
    background: linear-gradient(135deg, var(--verde-delicato) 0%, var(--verde-scuro) 100%);
    color: var(--bianco);
}

.section-contact h2,
.section-contact p,
.section-contact a {
    color: var(--bianco);
}

.section-contact a:hover {
    opacity: 0.8;
}

/* Content blocks */
.content {
    max-width: 800px;
    margin: 0 auto;
}

.intro-image {
    text-align: center;
    margin: 30px 0;
}

.intro-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.principles ul,
.not-we ul {
    list-style: none;
    padding-left: 0;
}

.principles li,
.not-we li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
}

.principles li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--verde-scuro);
    font-weight: bold;
}

.not-we li:before {
    content: "✗";
    position: absolute;
    left: 0;
    color: var(--verde-scuro);
    font-weight: bold;
}

.uk-model,
.two-sides,
.not-we {
    margin-top: 40px;
    padding: 30px;
    background-color: var(--grigio-chiaro);
    border-radius: 8px;
    border-left: 4px solid var(--verde-delicato);
}

.highlight {
    font-weight: 600;
    color: var(--verde-scuro);
}

/* Phases (Matrix sections) */
.phase {
    margin-bottom: 50px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(139, 157, 131, 0.3);
}

.phase:last-child {
    border-bottom: none;
}

.phase h3 {
    color: var(--verde-scuro);
    margin-bottom: 20px;
}

blockquote {
    font-style: italic;
    padding: 20px;
    margin: 20px 0;
    background-color: rgba(139, 157, 131, 0.1);
    border-left: 4px solid var(--verde-delicato);
    border-radius: 4px;
}

blockquote cite {
    display: block;
    margin-top: 10px;
    font-size: 0.9rem;
    font-style: normal;
    color: var(--verde-scuro);
}

/* Two columns */
.two-columns {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 20px;
}

@media (min-width: 768px) {
    .two-columns {
        grid-template-columns: 1fr 1fr;
    }
}

/* Contact section */
.contact-info {
    text-align: center;
    font-size: 1.1rem;
    margin: 30px 0;
}

.contact-name {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.contact-info .note {
    font-size: 0.9rem;
    font-style: italic;
    opacity: 0.9;
}

.contact-info p {
    margin: 15px 0;
}

.quote {
    text-align: center;
    font-style: italic;
    font-size: 1.2rem;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.3);
}

.closing {
    font-size: 1.1rem;
    text-align: center;
    margin: 30px 0;
}

/* Footer */
footer {
    background-color: var(--blu-navy);
    color: var(--bianco);
    text-align: center;
    padding: 30px 20px;
    font-size: 0.9rem;
}

/* Responsive adjustments */
@media (min-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2.2rem;
    }
    
    .hero {
        padding: 80px 20px 60px;
    }
    
    .hero .logo {
        width: 100px;
        height: 100px;
    }
    
    .section {
        padding: 80px 20px;
    }
    
    .main-nav a {
        padding: 10px 20px;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 40px;
    }
}

/* Print styles */
@media print {
    .main-nav {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
    }
}