/* ═══════════════════════════════════════════════════
   COGNITIVO LAB — L'arte dell'intelligenza applicata
   Design System: Italian Intellectual Minimalism
   ═══════════════════════════════════════════════════ */

/* ═══ IMPORT FONTS ═══ */
@import url('https://fonts.googleapis.com/css2?family=Crimson+Pro:wght@300;400;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ═══ CSS VARIABLES ═══ */
:root {
    /* Colors - Palette Italiana */
    --bianco-puro: #FFFFFF;
    --nero-carbone: #1A1A1A;
    --oro-sabbia: #D4AF37;
    --grigio-perla: #E5E5E5;
    --blu-mediterraneo: #004E89;
    --blu-hover: #003A66;
    
    /* Typography */
    --font-heading: 'Crimson Pro', serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Layout */
    --max-width: 1200px;
    --border-radius: 12px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--nero-carbone);
    background-color: var(--bianco-puro);
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--blu-mediterraneo);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--oro-sabbia);
}

/* ═══ TYPOGRAPHY ═══ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--nero-carbone);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-sm);
    font-size: clamp(1rem, 2vw, 1.125rem);
}

.lead-text {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    font-weight: 300;
    line-height: 1.8;
    color: var(--nero-carbone);
    opacity: 0.9;
}

.accent-text {
    color: var(--oro-sabbia);
    font-weight: 600;
}

blockquote {
    font-family: var(--font-heading);
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-style: italic;
    padding: var(--spacing-md);
    border-left: 4px solid var(--oro-sabbia);
    margin: var(--spacing-md) 0;
    background: var(--grigio-perla);
}

/* ═══ LAYOUT CONTAINERS ═══ */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-dark {
    background-color: var(--nero-carbone);
    color: var(--bianco-puro);
}

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

/* ═══ GRID SYSTEM ═══ */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-1 {
    grid-template-columns: 1fr;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ═══ NAVIGATION ═══ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--nero-carbone);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.navbar-logo:hover {
    color: var(--blu-mediterraneo);
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.navbar-menu a {
    color: var(--nero-carbone);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    transition: var(--transition);
}

.navbar-menu a:hover,
.navbar-menu a.active {
    background-color: var(--blu-mediterraneo);
    color: var(--bianco-puro);
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.navbar-toggle span {
    width: 25px;
    height: 3px;
    background: var(--nero-carbone);
    border-radius: 3px;
    transition: var(--transition);
}

/* ═══ HERO SECTION ═══ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--nero-carbone) 0%, var(--blu-mediterraneo) 100%);
    color: var(--bianco-puro);
    padding-top: 80px;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: var(--spacing-md);
}

.hero h1 {
    color: var(--bianco-puro);
    margin-bottom: var(--spacing-md);
    font-size: clamp(3rem, 6vw, 5rem);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero .lead-text {
    color: var(--bianco-puro);
    opacity: 0.95;
    margin-bottom: var(--spacing-lg);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ═══ BUTTONS ═══ */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 50px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--blu-mediterraneo);
    color: var(--bianco-puro);
    border-color: var(--blu-mediterraneo);
}

.btn-primary:hover {
    background-color: var(--blu-hover);
    color: var(--bianco-puro);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 78, 137, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: var(--bianco-puro);
    border-color: var(--bianco-puro);
}

.btn-outline:hover {
    background-color: var(--bianco-puro);
    color: var(--blu-mediterraneo);
}

.btn-light {
    background-color: var(--bianco-puro);
    color: var(--blu-mediterraneo);
    border-color: var(--bianco-puro);
}

.btn-light:hover {
    background-color: var(--oro-sabbia);
    color: var(--bianco-puro);
    border-color: var(--oro-sabbia);
}

/* ═══ CARDS ═══ */
.card {
    background: var(--bianco-puro);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: calc(var(--border-radius) - 4px);
    margin-bottom: var(--spacing-sm);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--blu-mediterraneo), var(--oro-sabbia));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
    color: var(--bianco-puro);
}

.card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--nero-carbone);
}

.card p {
    color: var(--nero-carbone);
    opacity: 0.8;
    margin-bottom: var(--spacing-sm);
}

.card-dark {
    background: var(--nero-carbone);
    color: var(--bianco-puro);
}

.card-dark h3,
.card-dark p {
    color: var(--bianco-puro);
}

/* ═══ FOOTER ═══ */
.footer {
    background-color: var(--nero-carbone);
    color: var(--bianco-puro);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    color: var(--oro-sabbia);
    margin-bottom: var(--spacing-sm);
}

.footer-section p,
.footer-section a {
    color: var(--bianco-puro);
    opacity: 0.85;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.footer-section a:hover {
    color: var(--oro-sabbia);
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    color: var(--bianco-puro);
    opacity: 0.7;
    max-width: var(--max-width);
    margin: 0 auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

/* ═══ COOKIE BANNER ═══ */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(26, 26, 26, 0.98);
    backdrop-filter: blur(10px);
    color: var(--bianco-puro);
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
    z-index: 999;
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-banner p {
    margin: 0;
    font-size: 0.95rem;
}

.cookie-banner a {
    color: var(--oro-sabbia);
    text-decoration: underline;
}

.cookie-banner button {
    background: var(--blu-mediterraneo);
    color: var(--bianco-puro);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    white-space: nowrap;
    transition: var(--transition);
}

.cookie-banner button:hover {
    background: var(--oro-sabbia);
}

/* ═══ FORM STYLES ═══ */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--nero-carbone);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--grigio-perla);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--blu-mediterraneo);
    box-shadow: 0 0 0 3px rgba(0, 78, 137, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* ═══ UTILITY CLASSES ═══ */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.py-0 { padding-top: 0; padding-bottom: 0; }
.py-1 { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-2 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-3 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }

/* ═══ ANIMATIONS ═══ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

.fade-in-delayed {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

/* ═══ RESPONSIVE DESIGN ═══ */
@media (max-width: 768px) {
    .navbar-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
    }
    
    .navbar-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .navbar-toggle {
        display: flex;
    }
    
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .cookie-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1025px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ═══ BLOG STYLES ═══ */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.blog-card {
    background: var(--bianco-puro);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.blog-card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.blog-card-content {
    padding: var(--spacing-md);
}

.blog-meta {
    font-size: 0.875rem;
    color: var(--blu-mediterraneo);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.blog-card h3 {
    margin-bottom: var(--spacing-sm);
}

.blog-card p {
    color: var(--nero-carbone);
    opacity: 0.8;
    margin-bottom: var(--spacing-sm);
}

/* Article Page */
.article-header {
    text-align: center;
    padding: var(--spacing-xl) 0 var(--spacing-md);
    background: var(--grigio-perla);
    margin-top: 70px;
}

.article-meta {
    font-size: 1rem;
    color: var(--blu-mediterraneo);
    margin-bottom: var(--spacing-sm);
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
    line-height: 1.8;
}

.article-content img {
    width: 100%;
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
}

.article-content h2 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.article-content h3 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

/* ═══ MAP STYLES ═══ */
.map-container {
    width: 100%;
    height: 400px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* ═══ FAQ STYLES ═══ */
.faq-item {
    background: var(--bianco-puro);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.faq-question {
    font-weight: 600;
    color: var(--blu-mediterraneo);
    margin-bottom: var(--spacing-xs);
    font-size: 1.125rem;
}

.faq-answer {
    color: var(--nero-carbone);
    opacity: 0.85;
    line-height: 1.7;
}

/* ═══ SOCIAL LINKS ═══ */
.social-links {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.social-link {
    width: 50px;
    height: 50px;
    background: var(--blu-mediterraneo);
    color: var(--bianco-puro);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--oro-sabbia);
    color: var(--bianco-puro);
    transform: translateY(-3px);
}