/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.4)), url('/css/images/home/reference.jpg') no-repeat center center;
    background-size: cover;
    height: 450px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    position: relative;
    margin-bottom: 20px;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3.5em;
    font-weight: 700;
    margin-bottom: 20px;
    color: white;
}

.hero-subtitle {
    font-size: 1.6em;
    margin-bottom: 30px;
    font-weight: 400;
}

/* Main content styling */
.content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 40px;
    background-color: #f5f5f5;
}

/* Reference sections */
.reference-section {
    background-color: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.reference-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

.reference-section h2 {
    font-size: 2em;
    color: #0056b3;
    margin-bottom: 15px;
}

.reference-section ul {
    list-style: none;
    padding: 0;
}

.reference-section li {
    margin: 15px 0;
    padding-left: 30px;
    position: relative;
}

/* Icons */
.reference-section li::before {
    content: "\f0a3"; /* Default icon */
    font-family: 'Font Awesome 5 Free';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.4em;
    font-weight: 900;
    color: #0056b3;
    vertical-align: middle;
}

/* Custom icons for each section */
.reference-section:nth-child(1) li::before {
    content: "\f095"; /* Phone icon */
}
.reference-section:nth-child(2) li::before {
    content: "\f015"; /* Home icon */
}
.reference-section:nth-child(3) li::before {
    content: "\f132"; /* Security icon */
}
.reference-section:nth-child(4) li::before {
    content: "\f2b5"; /* Email icon */
}

/* Improve link visibility */
.reference-section a {
    color: #0056b3;
    font-weight: bold;
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: border-bottom 0.3s ease;
}

.reference-section a:hover {
    border-bottom: 2px solid #0056b3;
}

/* Responsive design for smaller screens */
@media (max-width: 768px) {
    .content {
        grid-template-columns: 1fr;
    }

    .header h1 {
        font-size: 2.5em;
    }

    .header p {
        font-size: 1.1em;
    }

    .reference-section h2 {
        font-size: 1.6em;
    }
}