/* General Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-color: #f4f7f6;
    color: #333;
    line-height: 1.6;
}

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

/* Header */
header {
    background-color: #2c3e50;
    color: #fff;
    padding: 15px 0;
    border-bottom: 3px solid #3498db;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 28px;
    font-weight: bold;
}

.logo-img {
    height: 40px;
    margin-right: 10px;
    border-radius: 50%;
}

header nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

header nav ul li {
    margin-left: 25px;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

header nav ul li a:hover {
    color: #3498db;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('https://via.placeholder.com/1500x800?text=Terminal+Background') no-repeat center center/cover;
    color: #fff;
    text-align: center;
    padding: 100px 20px;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.hero h1 {
    font-size: 4em;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero p {
    font-size: 1.5em;
    margin-bottom: 40px;
    max-width: 800px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-primary {
    background-color: #3498db;
    color: #fff;
}

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: #ecf0f1;
    color: #2c3e50;
    border: 1px solid #bdc3c7;
}

.btn-secondary:hover {
    background-color: #bdc3c7;
    transform: translateY(-2px);
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: #fff;
    text-align: center;
}

.features h2 {
    font-size: 3em;
    margin-bottom: 60px;
    color: #2c3e50;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-item {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.feature-item h3 {
    font-size: 1.8em;
    color: #3498db;
    margin-bottom: 15px;
}

.feature-item p {
    font-size: 1.1em;
    color: #555;
}

/* Download Section */
.download {
    background-color: #34495e;
    color: #fff;
    text-align: center;
    padding: 80px 20px;
}

.download h2 {
    font-size: 3em;
    margin-bottom: 20px;
}

.download p {
    font-size: 1.2em;
    margin-bottom: 40px;
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    font-size: 0.9em;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 3em;
    }

    .hero p {
        font-size: 1.2em;
    }

    header .container {
        flex-direction: column;
    }

    header nav ul {
        margin-top: 15px;
    }

    header nav ul li {
        margin: 0 10px;
    }

    .features h2,
    .download h2 {
        font-size: 2.5em;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.5em;
    }

    .hero p {
        font-size: 1em;
    }

    .logo {
        font-size: 24px;
    }

    .logo-img {
        height: 30px;
    }

    header nav ul {
        flex-direction: column;
        align-items: center;
    }

    header nav ul li {
        margin: 5px 0;
    }

    .features h2,
    .download h2 {
        font-size: 2em;
    }

    .feature-item {
        padding: 20px;
    }
}