/* --- General & Typography --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 3rem; /* 48px */
}

h2 {
    font-size: 2.25rem; /* 36px */
}

p {
    margin-bottom: 1rem;
}

/* --- Header --- */
.header {
    background: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #0056b3;
}

.logo i {
    margin-right: 8px;
}

.nav a {
    margin-left: 15px;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 10px 25px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 5px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: #007bff;
    color: #fff;
    border: 1px solid #007bff;
}
.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.btn-secondary {
    background-color: transparent;
    color: #007bff;
    border: 1px solid #007bff;
}
.btn-secondary:hover {
    background-color: #007bff;
    color: #fff;
}

.btn-large {
    padding: 15px 35px;
    font-size: 1.2rem;
}


/* --- Hero Section --- */
.hero {
    /* *** THIS IS WHERE YOU SET THE BACKGROUND IMAGE *** */
    background-image: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    color: #fff;
    height: 80vh; /* 80% of the viewport height */
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    padding: 0 20px;
}

.hero h1 {
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    font-weight: 300;
}

/* --- Features Section --- */
.features {
    padding: 60px 0;
    background: #f4f7f6;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: #fff;
    padding: 30px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.feature-card i {
    font-size: 3rem;
    color: #007bff;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* --- Footer --- */
.footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
}

/* --- Responsive Design --- */
@media(max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .header .container {
        flex-direction: column;
    }
    .nav {
        margin-top: 1rem;
    }
    .hero {
        height: 60vh;
    }

}