/* =========== DESIGN SYSTEM: VARIABILI CSS =========== */
:root {
    /* Palette Colori (Light Mode) */
    --color-deep-space: #0D0C22;
    --color-off-white: #F5F6FA;
    --color-intelligent-teal: #00F5D4;
    --color-neural-purple: #7000FF;
    --color-text-primary: var(--color-deep-space);
    --color-text-secondary: #5a5a72;
    --color-background: #FFFFFF;
    --color-surface: var(--color-off-white);
    --color-border: #e0e0e6;
    --gradient-ai-aurora: linear-gradient(90deg, var(--color-neural-purple) 0%, var(--color-intelligent-teal) 100%);

    /* Tipografia */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Roboto', sans-serif;
    --h1-size: 4.5rem;
    --h2-size: 3rem;
    --h3-size: 2rem;
    --h4-size: 1.5rem;
    --body-size: 1.125rem;
    --caption-size: 0.875rem;

    /* Spaziature */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;

    /* Altro */
    --border-radius: 12px;
    --transition-speed: 0.3s;
    --box-shadow: 0 10px 30px rgba(13, 12, 34, 0.05);
}

/* Aggiungere qui le variabili per il Dark Mode se necessario */
/*
body.dark-mode {
    --color-text-primary: #FFFFFF;
    --color-background: var(--color-deep-space);
    --color-surface: #1A193D;
    --color-border: #2a2952;
}
*/


/* =========== RESET E STILI GLOBALI =========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    font-size: var(--body-size);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.h1 { font-size: var(--h1-size); font-weight: 700; }
.h2 { font-size: var(--h2-size); }
.h3 { font-size: var(--h3-size); }
.h4 { font-size: var(--h4-size); font-weight: 500; }

a {
    color: var(--color-neural-purple);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

a:hover {
    color: var(--color-intelligent-teal);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}


/* =========== COMPONENTI RIUTILIZZABILI =========== */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 1rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    text-align: center;
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-primary {
    background: var(--gradient-ai-aurora);
    color: white;
}

.btn-primary:hover {
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(112, 0, 255, 0.2);
}

.btn-secondary {
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background-color: #e9eaf0;
    border-color: #d1d1d8;
}

.btn-tertiary {
    background: transparent;
    color: var(--color-text-primary);
}

.btn-tertiary:hover {
    background: var(--color-surface);
}


/* =========== HEADER / NAVIGATION =========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) 0;
}

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

.nav-logo {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-intelligent-teal);
    transition: width var(--transition-speed) ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--color-text-primary);
    transition: all 0.3s ease-in-out;
}

/* =========== HERO SECTION =========== */
.hero {
    padding-top: 150px;
    padding-bottom: 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin: var(--spacing-md) 0 var(--spacing-lg);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.hero-background-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(112, 0, 255, 0.1), transparent 70%);
    transform: translate(-50%, -50%);
    z-index: -1;
    pointer-events: none;
}


/* =========== SOCIAL PROOF SECTION =========== */
.social-proof {
    padding-bottom: var(--spacing-xl);
}

.social-proof-title {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.logos-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.logos-container img {
    opacity: 0.6;
    transition: opacity var(--transition-speed) ease;
}

.logos-container img:hover {
    opacity: 1;
}


/* =========== HOW IT WORKS SECTION =========== */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.step-card {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--color-border);
}

.step-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-ai-aurora);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.step-icon svg {
    stroke: white;
    width: 28px;
    height: 28px;
}


/* =========== FEATURES (BENTO GRID) SECTION =========== */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.bento-item {
    background: var(--color-surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.bento-item.item-large {
    grid-column: span 2;
    grid-row: span 2;
}
.bento-item.item-medium {
    grid-column: span 1;
    grid-row: span 1;
}

.bento-img {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 80%;
    height: auto;
    border-radius: 8px;
    margin: var(--spacing-sm);
}

/* =========== PRICING SECTION =========== */
.pricing {
    background-color: var(--color-surface);
}

.pricing-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.toggle-checkbox {
    display: none;
}

.toggle-label {
    width: 50px;
    height: 26px;
    background: #ccc;
    border-radius: 50px;
    position: relative;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.toggle-label::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: white;
    top: 2px;
    left: 2px;
    transition: transform var(--transition-speed);
}

.toggle-checkbox:checked +.toggle-label {
    background: var(--color-neural-purple);
}

.toggle-checkbox:checked +.toggle-label::after {
    transform: translateX(24px);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    align-items: center;
}

.pricing-card {
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    box-shadow: var(--box-shadow);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.pricing-card:hover {
    transform: translateY(-10px);
}

.pricing-card.featured {
    border: 2px solid var(--color-neural-purple);
    transform: scale(1.05);
    position: relative;
}

.featured-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-ai-aurora);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.pricing-description {
    color: var(--color-text-secondary);
    min-height: 40px;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-primary);
    margin: var(--spacing-md) 0;
}

.price-period {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-text-secondary);
}

.features-list {
    margin: var(--spacing-lg) 0;
    text-align: left;
}

.features-list li {
    margin-bottom: var(--spacing-sm);
    padding-left: 25px;
    position: relative;
}

.features-list li::before {
    content: '✓';
    color: var(--color-intelligent-teal);
    position: absolute;
    left: 0;
}


/* =========== TESTIMONIAL SECTION =========== */
.testimonial {
    background-color: var(--color-deep-space);
    color: white;
}

.testimonial-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.testimonial-content blockquote {
    font-size: 1.75rem;
    font-family: var(--font-primary);
    font-weight: 500;
    line-height: 1.4;
    border: none;
    margin-bottom: var(--spacing-lg);
}

.author {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

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

.author-name {
    font-weight: 500;
}

.author-title {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* =========== FINAL CTA SECTION =========== */
.final-cta {
    text-align: center;
    background: var(--gradient-ai-aurora);
    color: white;
}

.final-cta.h2,.final-cta.section-subtitle {
    color: white;
}

.final-cta.btn-primary {
    background: white;
    color: var(--color-deep-space);
}

/* =========== FOOTER =========== */
.footer {
    background-color: var(--color-surface);
    padding: var(--spacing-xl) 0;
    font-size: 0.9rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
    display: block;
}

.footer-tagline {
    color: var(--color-text-secondary);
}

.footer-heading {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column ul li a {
    color: var(--color-text-secondary);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: var(--color-text-secondary);
}

.footer-legal a,.footer-social a {
    color: var(--color-text-secondary);
    margin-left: var(--spacing-md);
}

/* =========== ANIMAZIONI SU SCROLL =========== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* =========== RESPONSIVE DESIGN =========== */
@media (max-width: 1024px) {
    :root {
        --h1-size: 3.5rem;
        --h2-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    :root {
        --h1-size: 2.5rem;
        --h2-size: 2rem;
        --body-size: 1rem;
    }

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

   .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px; /* Altezza header */
        flex-direction: column;
        background-color: var(--color-background);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        gap: 0;
    }

   .nav-menu.active {
        left: 0;
    }

   .nav-item {
        padding: 1.5rem 0;
        border-bottom: 1px solid var(--color-border);
    }

   .nav-actions.btn-secondary {
        display: none;
    }

   .hamburger {
        display: block;
    }

   .hamburger.active.bar:nth-child(2) {
        opacity: 0;
    }
   .hamburger.active.bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
   .hamburger.active.bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

   .hero-cta {
        flex-direction: column;
    }

   .bento-grid {
        grid-template-columns: 1fr;
    }
   .bento-item.item-large {
        grid-column: span 1;
        grid-row: span 1;
    }

   .pricing-card.featured {
        transform: scale(1);
    }

   .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}