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

body {
    font-family: 'Inter', sans-serif;
    background: #0d1117;
    color: #c9d1d9;
    line-height: 1.6;
}

/* NAV */

nav {
    display: flex;
    justify-content: space-between;
    padding: 20px 40px;
    position: sticky;
    top: 0;
    background: rgba(13,17,23,0.7);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #30363d;
}

.logo {
    font-weight: 700;
    color: #3fb950;
}

nav ul {
    display: flex;
    gap: 20px;
    list-style: none;
}

nav a {
    text-decoration: none;
    color: #c9d1d9;
    transition: 0.2s;
}

nav a:hover {
    color: #3fb950;
}

/* HERO */

.hero {
    text-align: center;
    padding: 160px 20px;
    background: radial-gradient(circle at top, #3fb95022, transparent 60%);
}

.hero h1 {
    font-size: 3.2rem;
    max-width: 800px;
    margin: auto;
    line-height: 1.2;
}

.hero h1 span {
    color: #3fb950;
}

.hero p {
    margin-top: 20px;
    opacity: 0.85;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.micro {
    margin-top: 15px;
    font-size: 0.9rem;
    opacity: 0.6;
}

/* BADGE */

.badge {
    background: #3fb95022;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
}

/* BUTTONS */

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    padding: 12px 22px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.2s;
}

.primary {
    background: linear-gradient(135deg, #3fb950, #2ea043);
    color: #0d1117;
}

.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px #3fb95055;
}

.secondary {
    border: 1px solid #30363d;
}

.secondary:hover {
    border-color: #3fb950;
}

/* SECTION */

.section {
    padding: 100px 20px;
    max-width: 1100px;
    margin: auto;
}

.section h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #3fb950;
}

.subtitle {
    text-align: center;
    margin-bottom: 40px;
    opacity: 0.7;
}

/* GRID */

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

/* CARD */

.card {
    background: rgba(255,255,255,0.03);
    border: 1px solid #30363d;
    padding: 24px;
    border-radius: 16px;
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: #3fb950;
}

/* STEPS */

.steps {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 250px;
    background: #161b22;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

.step span {
    font-size: 2rem;
    color: #3fb950;
}

/* ABOUT */

.about-box {
    text-align: center;
    max-width: 600px;
    margin: auto;
}

/* CTA */

.cta-final {
    text-align: center;
    padding: 120px 20px;
    background: linear-gradient(180deg, transparent, #3fb95022);
}

.contact-text {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

/* FOOTER */

footer {
    text-align: center;
    padding: 20px;
    border-top: 1px solid #30363d;
}

/* =========================
   RESPONSIVE
========================= */

/* Tablet */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.6rem;
    }

    .section {
        padding: 80px 20px;
    }
}

/* Mobile */
@media (max-width: 768px) {

    nav {
        padding: 15px 20px;
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }

    nav ul {
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero {
        padding: 120px 15px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 0.95rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

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

    .steps {
        flex-direction: column;
    }
}

/* Mobile piccolo */
@media (max-width: 480px) {

    .hero h1 {
        font-size: 1.7rem;
    }

    .section {
        padding: 60px 15px;
    }

    .card {
        padding: 18px;
    }

    .badge {
        font-size: 0.7rem;
    }
}