:root {
    --bg-dark: #0d1117;
    --bg-light: #161b22; 
    --text-primary: #e6edf3; 
    --text-secondary: #8b949e; 
    --border-color: #30363d; 
    --accent-primary: #00f6ff; 
    --accent-secondary: #00a2ff;
    --font-family: 'Inter', sans-serif;
}
body { margin: 0; background-color: var(--bg-dark); color: var(--text-primary); font-family: var(--font-family); font-size: 16px; line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent-secondary); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--accent-primary); }
.main-header { background-color: rgba(13, 17, 23, 0.8); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); padding: 15px 0; position: sticky; top: 0; z-index: 1000; }
.main-header nav { display: flex; justify-content: space-between; align-items: center; }
.logo-link { display: flex; align-items: center; font-size: 1.8rem; font-weight: 700; color: var(--text-primary); white-space: nowrap; }
.logo { height: 40px; margin-right: 5px; }
.nav-links { list-style: none; display: flex; align-items: center; gap: 30px; margin: 0; padding: 0; }
.gradient-text { background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.subtitle { font-size: 1.25rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto 40px; }
.cta-button { display: inline-flex; align-items: center; gap: 10px; padding: 15px 35px; font-size: 1.1rem; font-weight: 600; color: white; background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary)); border-radius: 8px; transition: transform 0.3s, box-shadow 0.3s; border: none; cursor: pointer; }
.cta-button:hover { color: white; transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0, 162, 255, 0.2); }
.secondary-button { display: inline-flex; align-items: center; gap: 10px; padding: 15px 35px; font-size: 1.1rem; font-weight: 600; color: var(--text-primary); background-color: transparent; border: 1px solid var(--border-color); border-radius: 8px; transition: background-color 0.3s, border-color 0.3s; }
.secondary-button:hover { background-color: var(--bg-light); border-color: var(--text-secondary); color: var(--text-primary); }
.main-footer { text-align: center; padding: 40px 0; border-top: 1px solid var(--border-color); color: var(--text-secondary); }

.hero-section {
    padding: 80px 0;
    background-color: var(--bg-dark);
}
.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}
.hero-text {
    flex: 1;
    max-width: 650px;
}
.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin: 0 0 20px 0;
}
.hero-text .subtitle {
    margin-bottom: 40px;
    font-size: 1.1rem;
    max-width: none;
    line-height: 1.7;
}
.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}
.hero-image {
    flex-shrink: 0; 
    width: 450px;
    text-align: center;
}
.hero-image img {
    max-width: 100%;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 15px 30px rgba(0,0,0,0.4);
}

.features-section {
    padding: 80px 0;
    background-color: var(--bg-light);
}
.features-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.feature-item {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    text-align: left;
}
.feature-item i {
    font-size: 2rem;
    color: var(--accent-secondary);
    margin-bottom: 15px;
    display: block;
}
.feature-item h3 {
    font-size: 1.4rem;
    margin: 0 0 10px 0;
}
.feature-item p {
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.pricing-section {
    padding: 80px 0;
}
.pricing-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}
.pricing-box {
    max-width: 550px;
    margin: 0 auto;
    background-color: var(--bg-light);
    border: 1px solid var(--accent-secondary);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 0 30px rgba(0, 162, 255, 0.2);
}
.pricing-box .price {
    font-size: 3rem;
    font-weight: 700;
    margin: 10px 0 5px 0;
}
.price .price-period {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--text-secondary);
}
.price-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}
.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 30px 0;
    text-align: left;
    display: inline-block;
}
.pricing-features li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.pricing-features li i {
    color: var(--accent-primary);
}
#paypal-button-container {
    margin-top: 20px;
}
.secure-note {
    margin-top: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

@media (max-width: 900px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    .hero-image {
        order: -1;
        width: 100%;
        margin-bottom: 30px;
    }
    .hero-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {

    .main-header nav {
        flex-direction: column;
        gap: 15px;
    }

    .hero-text h1 {
        font-size: 2.6rem;
        line-height: 1.3;
    }


    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
}