* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: #222;
    background-color: #f4f4f4;
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}

header {
    background-color: #183b63;
    color: white;
    border-bottom: 5px solid #c62828;
}

.topbar {
    padding: 24px 0 18px;
}

.logo-row {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-row img {
    width: 42px;
}

.site-title {
    margin: 0;
    font-size: 2.2em;
}

.tagline {
    margin: 2px 0 0;
    font-size: 1.05em;
}

nav {
    background-color: #102b48;
}

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

nav li {
    flex: 1 1 160px;
}

nav a {
    display: block;
    padding: 13px 12px;
    color: white;
    text-align: center;
    text-decoration: none;
    font-weight: bold;
    border-right: 1px solid #315170;
}

nav a:hover,
nav a:focus {
    background-color: #c62828;
}


.hero {
    min-height: 430px;
    background-image: url("lithocraftpic004.jpg");
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 650px;
    color: rgb(0, 0, 0);
    padding: 60px 0;
}

.hero h2 {
    font-size: 3em;
    line-height: 1.15;
    margin: 0 0 15px;
}

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

.button {
    display: inline-block;
    margin-top: 12px;
    padding: 12px 22px;
    color: white;
    background-color: #c62828;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
}

.button:hover,
.button:focus {
    background-color: #9e1f1f;
}

main {
    padding-bottom: 50px;
}

.page-heading {
    padding: 45px 0 25px;
    text-align: center;
}

.page-heading h2 {
    margin-bottom: 8px;
    color: #183b63;
    font-size: 2.3em;
}

.page-heading p {
    max-width: 750px;
    margin: 0 auto;
}

.intro {
    padding: 45px 0 20px;
}

.intro h2,
.content h2 {
    color: #183b63;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 25px 0 45px;
}

.card {
    background-color: white;
    border: 1px solid #d3d3d3;
    border-top: 5px solid #c62828;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .12);
}

.card h3 {
    margin-top: 0;
    color: #183b63;
}

.card a {
    color: #c62828;
    font-weight: bold;
}

.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: start;
}

.content-box {
    background-color: white;
    padding: 28px;
    margin-bottom: 25px;
    border: 1px solid #d3d3d3;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .10);
}

.content-box h3 {
    color: #183b63;
    margin-top: 0;
}

.content-box ul {
    padding-left: 22px;
}

.feature-image {
    width: 100%;
    border: 5px solid white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .18);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 25px;
}

.image-grid figure {
    margin: 0;
    background-color: white;
    padding: 8px;
    box-shadow: 0 2px 7px rgba(0, 0, 0, .12);
}

.image-grid img {
    width: 100%;
    height: 170px;
    object-fit: cover;
}

.image-grid figcaption {
    padding: 8px 4px 3px;
    font-size: .9em;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 30px;
}

form {
    background-color: white;
    padding: 28px;
    border: 1px solid #d3d3d3;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .10);
}

label {
    display: block;
    margin-top: 14px;
    margin-bottom: 5px;
    font-weight: bold;
}

input,
textarea,
select {
    width: 100%;
    padding: 10px;
    border: 1px solid #999;
    border-radius: 3px;
    font: inherit;
}

textarea {
    min-height: 150px;
    resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
    border-color: #183b63;
    outline: 2px solid #b8cee5;
}

button {
    margin-top: 20px;
    padding: 12px 22px;
    border: 0;
    border-radius: 4px;
    background-color: #c62828;
    color: white;
    font-weight: bold;
    font-size: 1em;
    cursor: pointer;
}

button:hover,
button:focus {
    background-color: #9e1f1f;
}

.address {
    background-color: #183b63;
    color: white;
    padding: 28px;
}

.address h3 {
    margin-top: 0;
}

.address a {
    color: white;
}

footer {
    background-color: #102b48;
    color: white;
    padding: 25px 0;
    text-align: center;
}

footer p {
    margin: 5px 0;
}

@media screen and (max-width: 480px) {
    .container {
        width: 92%;
    }

    .logo-row {
        align-items: flex-start;
    }

    .site-title {
        font-size: 1.65em;
    }

    .tagline {
        font-size: .9em;
    }

    nav ul {
        display: block;
    }

    nav li {
        width: 100%;
    }

    nav a {
        border-right: 0;
        border-bottom: 1px solid #315170;
    }

    .hero {
        min-height: 360px;
    }

    .hero h2 {
        font-size: 2.15em;
    }

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

    .card-grid,
    .two-column,
    .contact-layout,
    .image-grid {
        grid-template-columns: 1fr;
    }

    .image-grid img {
        height: auto;
    }

    .page-heading {
        padding-top: 30px;
    }
}