/* --- Reset & Base Styles --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: 85%;
    max-width: 1200px;
    margin: 0 auto;
}

/* --- Header & Navigation --- */
header {
    background-color: #ffffff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
}

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

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    font-weight: 500;
    color: #555;
    transition: color 0.3s ease;
}

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

/* --- Hero Section --- */
.hero {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: #ffffff;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    background-color: #e74c3c;
    color: #fff;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: bold;
    transition: background 0.3s ease;
}

.btn:hover {
    background-color: #c0392b;
}

/* --- Features Section --- */
.features {
    padding: 60px 0;
    background-color: #ffffff;
}

.section-title {
    text-align: center;
    color: #2c3e50;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid #eee;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    margin-bottom: 15px;
    color: #2c3e50;
}

/* --- Footer --- */
footer {
    background-color: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul li {
        margin: 0 10px;
    }

    .hero h1 {
        font-size: 32px;
    }
}