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

:root {
    --accent: #4DC3FF;
    --dark: #0A0A0A;
    --gray: #1A1A1A;
    --light-gray: #2A2A2A;
    --text: #FFFFFF;
    --text-muted: #9A9A9A;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
}

.nav-logo img {
    height: 40px;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 30px;
    font-size: 14px;
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--text); }

.lang-selector {
    background: var(--light-gray);
    color: var(--text);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    padding: 6px 10px;
    font-size: 13px;
    cursor: pointer;
    outline: none;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 20px 80px;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(77, 195, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(77, 195, 255, 0.1);
    border: 1px solid rgba(77, 195, 255, 0.3);
    border-radius: 20px;
    font-size: 12px;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(40px, 7vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    max-width: 700px;
}

.hero h1 span { color: var(--accent); }

.hero p {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 500px;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 80px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
    background: var(--accent);
    color: #000;
    box-shadow: 0 4px 20px rgba(77, 195, 255, 0.3);
}

.btn-secondary {
    background: var(--light-gray);
    color: var(--text);
    border: 1px solid rgba(255,255,255,0.1);
}

.btn-store img {
    height: 60px;
    cursor: pointer;
}

.hero-image {
    margin-top: 60px;
    max-width: 320px;
    width: 100%;
}

.hero-image img {
    width: 100%;
    border-radius: 24px;
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 40px 80px rgba(0,0,0,0.5);
}

/* Features */
.features {
    padding: 100px 20px;
    max-width: 1100px;
    margin: 0 auto;
}

.features-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px;
    background: var(--gray);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.06);
    transition: border-color 0.3s;
}

.feature-card:hover {
    border-color: rgba(77, 195, 255, 0.3);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: rgba(77, 195, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Screenshots */
.screenshots {
    padding: 100px 20px;
    text-align: center;
}

.screenshots h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.screenshots p {
    color: var(--text-muted);
    margin-bottom: 48px;
    font-size: 16px;
}

.screenshots-row {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.screenshot-item {
    width: 220px;
}

.screenshot-item img {
    width: 100%;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

/* Premium */
.premium {
    padding: 100px 20px;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.premium-card {
    padding: 48px;
    background: linear-gradient(135deg, rgba(77, 195, 255, 0.08) 0%, rgba(77, 195, 255, 0.02) 100%);
    border: 1px solid rgba(77, 195, 255, 0.2);
    border-radius: 24px;
}

.premium-card h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.premium-card p {
    color: var(--text-muted);
    margin-bottom: 32px;
    font-size: 16px;
}

.premium-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    text-align: left;
    margin-bottom: 32px;
}

.premium-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.premium-feature::before {
    content: '✓';
    color: var(--accent);
    font-weight: 700;
}

/* Footer */
footer {
    padding: 60px 20px;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.06);
}

footer p {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 8px;
}

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

.small {
    font-size: 10px;
}

/* Responsive */
@media (max-width: 768px) {
    nav { padding: 16px 20px; }
    .nav-links { display: none; }
    .premium-features { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .screenshot-item { width: 160px; }
}


/* Scroll animations */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger per le card */
.features-grid [data-animate]:nth-child(2) { transition-delay: 0.1s; }
.features-grid [data-animate]:nth-child(3) { transition-delay: 0.2s; }
.features-grid [data-animate]:nth-child(4) { transition-delay: 0.3s; }
.features-grid [data-animate]:nth-child(5) { transition-delay: 0.4s; }
.features-grid [data-animate]:nth-child(6) { transition-delay: 0.5s; }

.screenshots-row [data-animate]:nth-child(2) { transition-delay: 0.1s; }
.screenshots-row [data-animate]:nth-child(3) { transition-delay: 0.2s; }
.screenshots-row [data-animate]:nth-child(4) { transition-delay: 0.3s; }