/*
 * CSS cho Khối Dự Án Thi Công (Project Gallery)
 */

/* 1. Header Dự án */
.hbp-project-wrapper {
    margin-bottom: 50px;
    background: #fff;
    padding: 20px 0;
}

.hbp-project-header {
    margin-bottom: 25px;
    padding-left: 15px;
    border-left: 5px solid #008000; /* Gạch dọc màu xanh sang trọng */
}

.hbp-project-title {
    font-size: 26px;
    font-weight: 800;
    color: #333;
    margin: 0 0 8px 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hbp-project-subtitle {
    font-size: 15px;
    color: #666;
    font-style: italic;
}

/* 2. Lưới Ảnh Dự Án */
.hbp-project-grid {
    display: grid;
    grid-template-columns: repeat(var(--cols, 4), 1fr);
    gap: var(--gap, 15px);
}

.hbp-project-item {
    display: block;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    background-color: #f1f1f1;
}

.hbp-project-link {
    display: block;
    width: 100%;
    height: 100%;
}

.hbp-project-img-wrap {
    position: relative;
    width: 100%;
    padding-top: 75%; /* Tỷ lệ 4:3 chuẩn cho ảnh dự án */
    overflow: hidden;
}

.hbp-project-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.5s ease;
}

/* Hiệu ứng Hover: Phóng to nhẹ */
.hbp-project-item:hover .hbp-project-bg {
    transform: scale(1.1);
}

/* Lớp phủ báo hiệu bấm để xem (Overlay có dấu +) */
.hbp-project-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 128, 0, 0.4); /* Xanh lá mờ */
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hbp-project-item:hover .hbp-project-overlay {
    opacity: 1;
}

.hbp-project-overlay::after {
    content: '+';
    color: #fff;
    font-size: 40px;
    font-weight: 300;
    transform: scale(0.5);
    transition: transform 0.3s ease;
}

.hbp-project-item:hover .hbp-project-overlay::after {
    transform: scale(1);
}

/* --- Responsive (Điện thoại/Tablet) --- */
@media (max-width: 849px) {
    .hbp-project-grid {
        grid-template-columns: repeat(3, 1fr) !important;
    }
}

@media (max-width: 550px) {
    .hbp-project-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 10px !important;
    }
    .hbp-project-title {
        font-size: 20px;
    }
    .hbp-project-overlay {
        display: none; /* Điện thoại vuốt nên không cần lớp phủ + */
    }
}