* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: #f7f9fc;
    color: #1f2933;
}

/* NAVBAR */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    background: #0f172a;
    color: white;
    position: relative;
}

.navbar .logo {
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.navbar nav {
    display: flex;
    gap: 20px;
}

.navbar nav a {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.95rem;
}

.navbar nav a:hover {
    color: white;
}

.nav-toggle {
    display: none;
    font-size: 1.8rem;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
}

/* HERO */
.hero {
    padding: 80px 20px;
    text-align: center;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: white;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 30px;
    color: #e2e8f0;
}

.hero-buttons .btn {
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    margin: 5px;
    display: inline-block;
}

.btn.primary {
    background-color: #38bdf8;
    color: #0f172a;
}

.btn.primary:hover {
    background-color: #0ea5e9;
}

.btn.secondary {
    border: 1px solid #cbd5e1;
    color: white;
}

.btn.secondary:hover {
    background-color: rgba(255,255,255,0.1);
}

/* FEATURES */
.features {
    padding: 40px 20px;
    background: white;
    max-width: 1200px;
    margin: 0 auto;
}

.features h2 {
    margin-bottom: 30px;
    max-width: 800px;
    text-align: center;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.feature h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.feature p {
    color: #475569;
    line-height: 1.6;
}

/* FOOTER */
footer {
    text-align: center;
    padding: 20px;
    font-size: 0.9rem;
    color: #64748b;
    background: #f1f5f9;
}

/* RESPONSIVE MEDIA QUERIES */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    .navbar nav { display: none; flex-direction: column; width: 100%; margin-top: 10px; }
    .navbar nav.active { display: flex; }
    .nav-toggle { display: block; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.6rem; }
    .hero p { font-size: 0.95rem; }
    .hero-buttons .btn { width: 100%; margin: 8px 0; }
    .navbar { flex-wrap: wrap; padding: 15px; }
}