/* Reset e variabili CSS */
:root {
    --primary-color: #20B2AA;
    --primary-dark: #1A9B94;
    --secondary-color: #4ECDC4;
    --accent-color: #FF6B6B;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    --text-white: #FFFFFF;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --border-color: #E9ECEF;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.brand-name {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    z-index: 1001;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition);
    border-radius: 3px;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Menu mobile */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 50px;
        gap: 30px;
        transition: left 0.3s ease;
        z-index: 999;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        font-size: 1.25rem;
        font-weight: 600;
        padding: 10px 20px;
        border-radius: 8px;
        transition: all 0.3s ease;
    }
    
    .nav-link:hover {
        background: var(--primary-color);
        color: var(--text-white);
    }
    
    .nav-link::after {
        display: none;
    }
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #F8F9FA 0%, #E9ECEF 100%);
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
   background: var(--text-white);
    color: var(--primary-color);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: var(--bg-white);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    text-align: center;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    max-width: 300px;
    animation: float 6s ease-in-out infinite;
}

.phone-mockup img {
    width: 100%;
    height: auto;
    border-radius: 24px;
    box-shadow: var(--shadow-hover);
}

.app-mockup-placeholder {
    background: var(--bg-white);
    border: 3px solid var(--primary-color);
    border-radius: 24px;
    padding: 60px 40px;
    text-align: center;
    min-height: 500px;
    width: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-hover);
    position: relative;
    overflow: hidden;
}

.app-mockup-placeholder::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 6px;
    background: var(--text-light);
    border-radius: 3px;
}

.app-mockup-placeholder::after {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--border-color);
    border-radius: 50%;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

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

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 32px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--text-white);
    font-size: 2rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.feature-description {
    color: var(--text-light);
    line-height: 1.6;
}

/* Screenshots Section */
.screenshots {
    padding: 100px 0;
    background: var(--bg-light);
}

.screenshots-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.screenshot-item {
    text-align: center;
}

.screenshot-placeholder {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px 20px;
    margin-bottom: 16px;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.screenshot-placeholder:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.screenshot-placeholder h4 {
    margin-top: 16px;
    color: var(--text-dark);
    font-weight: 600;
}

.screenshot-item img {
    width: 100%;
    max-width: 250px;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 16px;
    transition: var(--transition);
}

.screenshot-item img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
}

.screenshot-caption h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.screenshot-caption p {
    color: var(--text-light);
}

/* About Section */
.about {
    padding: 100px 0;
    background: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-description {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.7;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.about-feature i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.team-placeholder {
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 60px 40px;
    text-align: center;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.team-placeholder:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-hover);
}

/* Download Section */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
    text-align: center;
}

.download .section-title,
.download .section-subtitle {
    color: var(--text-white);
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin: 48px 0;
}

.download-btn img {
    height: 60px;
    transition: var(--transition);
}

.download-btn:hover img {
    transform: scale(1.05);
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 48px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-white);
}

.info-item i {
    font-size: 1.25rem;
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-description {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-method i {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.25rem;
}

.contact-method h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-dark);
}

.contact-method p {
    color: var(--text-light);
}

.contact-form {
    background: var(--bg-white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 24px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    font-family: var(--font-family);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: var(--text-white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.footer-brand-name {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.footer-description {
    color: #BDC3C7;
    margin-bottom: 24px;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-white);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: #BDC3C7;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495E;
    color: #BDC3C7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
        line-height: 1.1;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
        margin-bottom: 28px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 30px;
    }
    
    .features {
        padding: 80px 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .feature-card {
        padding: 24px;
    }
    
    .screenshots {
        padding: 80px 0;
    }
    
    .screenshots-gallery {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 24px;
    }
    
    .screenshot-placeholder {
        min-height: 250px;
        padding: 30px 15px;
    }
    
    .app-mockup-placeholder {
        min-height: 400px;
        width: 250px;
        padding: 40px 30px;
    }
    
    .team-placeholder {
        min-height: 300px;
        padding: 40px 30px;
    }
    
    .about {
        padding: 80px 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .download {
        padding: 80px 0;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }
    
    .download-info {
        flex-direction: column;
        gap: 16px;
    }
    
    .contact {
        padding: 80px 0;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form {
        padding: 30px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
    
    .footer {
        padding: 50px 0 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 90px 0 50px;
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.1;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 24px;
    }
    
    .section-title {
        font-size: 1.8rem;
        line-height: 1.2;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .features {
        padding: 60px 0;
    }
    
    .features-grid {
        gap: 20px;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: 16px;
    }
    
    .feature-title {
        font-size: 1.25rem;
        margin-bottom: 12px;
    }
    
    .screenshots {
        padding: 60px 0;
    }
    
    .screenshots-gallery {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .app-mockup-placeholder {
        width: 200px;
        min-height: 350px;
        padding: 30px 20px;
    }
    
    .app-mockup-placeholder i {
        font-size: 6rem !important;
    }
    
    .screenshot-placeholder {
        min-height: 200px;
        padding: 20px 10px;
    }
    
    .screenshot-placeholder i {
        font-size: 3rem !important;
    }
    
    .screenshot-placeholder h4 {
        font-size: 1rem;
        margin-top: 12px;
    }
    
    .screenshot-caption h4 {
        font-size: 1.125rem;
        margin-bottom: 6px;
    }
    
    .screenshot-caption p {
        font-size: 0.9rem;
    }
    
    .about {
        padding: 60px 0;
    }
    
    .about-description {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    
    .team-placeholder {
        min-height: 250px;
        padding: 30px 20px;
    }
    
    .team-placeholder i {
        font-size: 4rem !important;
    }
    
    .download {
        padding: 60px 0;
    }
    
    .download-buttons {
        gap: 12px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 15px;
    }
    
    .info-item {
        font-size: 0.9rem;
    }
    
    .contact {
        padding: 60px 0;
    }
    
    .contact-form {
        padding: 24px;
    }
    
    .form-group input,
    .form-group textarea {
        padding: 14px;
        font-size: 15px;
    }
    
    .contact-method h4 {
        font-size: 1rem;
    }
    
    .contact-method p {
        font-size: 0.9rem;
    }
    
    .footer {
        padding: 40px 0 16px;
    }
    
    .footer-title {
        font-size: 1rem;
        margin-bottom: 12px;
    }
    
    .footer-links a {
        font-size: 0.9rem;
    }
    
    .footer-brand-name {
        font-size: 20px;
    }
    
    .footer-description {
        font-size: 0.9rem;
        margin-bottom: 20px;
    }
}

/* Media query aggiuntiva per schermi molto piccoli */
@media (max-width: 360px) {
    .container {
        padding: 0 12px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .app-mockup-placeholder {
        width: 180px;
        min-height: 320px;
        padding: 25px 15px;
    }
    
    .app-mockup-placeholder i {
        font-size: 5rem !important;
    }
    
    .screenshot-placeholder {
        min-height: 180px;
        padding: 15px 8px;
    }
    
    .screenshot-placeholder i {
        font-size: 2.5rem !important;
    }
    
    .feature-card {
        padding: 16px;
    }
    
    .contact-form {
        padding: 20px;
    }
    
    .form-group input,
    .form-group textarea {
        padding: 12px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 40px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 40px; }

/* Accessibilità e performance */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Preload e animazioni ridotte per chi preferisce meno movimento */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    @keyframes float {
        0%, 100% { transform: translateY(0px); }
    }
}

/* Ottimizzazione per schermi ad alta densità */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo, .footer-logo {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Focus states migliorati per accessibilità */
.btn:focus,
.nav-link:focus,
.form-group input:focus,
.form-group textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Hover states per dispositivi touch */
@media (hover: hover) {
    .feature-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-hover);
    }
    
    .screenshot-placeholder:hover {
        transform: scale(1.05);
        box-shadow: var(--shadow-hover);
        border-color: var(--primary-color);
    }
}

/* Stati per dispositivi touch */
@media (hover: none) {
    .feature-card:active {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }
    
    .btn:active {
        transform: translateY(-1px);
    }
}