/* Include padding and borders in element widths. */
* {
    box-sizing: border-box;
}

/* Shared colours make future adjustments easy. */
:root {
    --background: #f7f8f3;
    --text: #26332c;
    --green: #385c2c;
    --blue: #286b8a;
    --muted: #526158;
    --border: #d7dfd2;
}

body {
    margin: 0;
    background-color: var(--background);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1rem;
    line-height: 1.7;
}

/* Centre the introduction and give it room to breathe. */
.hero {
    max-width: 960px;
    margin: 0 auto;
    padding: 100px 24px 80px;
    border-bottom: 1px solid var(--border);
}

.hero h1 {
    max-width: 100%;
    margin: 0 0 20px;
    color: var(--green);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -0.025em;
}

.hero-subtitle {
    margin: 0 0 32px;
    color: var(--blue);
    font-size: 1.1rem;
    font-weight: 700;
}

.hero-intro {
    max-width: 640px;
    margin: 0;
    color: var(--muted);
    font-size: 1.125rem;
}

.site-footer {
    max-width: 960px;
    margin: 0 auto;
    padding: 28px 24px;
    color: var(--muted);
    font-size: 0.875rem;
    text-align: center;
}

.site-footer p {
    margin: 0;
}

a {
    color: var(--blue);
    text-underline-offset: 0.2em;
}

a:hover {
    text-decoration-thickness: 2px;
}

a:focus-visible {
    outline: 3px solid var(--blue);
    outline-offset: 4px;
}

/* Reduce empty space on smaller screens. */
@media (max-width: 600px) {
    .hero {
        padding: 60px 24px 48px;
    }
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 12px 28px;
    max-width: 960px;
    margin: 0 auto;
    padding: 24px;
}

.site-nav a {
    padding: 8px 0;
    color: var(--green);
    font-weight: 700;
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    text-decoration: underline;
    text-underline-offset: 0.4em;
}

@media (max-width: 600px) {
    .site-nav {
        justify-content: flex-start;
    }
}

.hero-logo {
    display: block;
    width: 120px;
    height: auto;
    margin-bottom: 28px;
    mix-blend-mode: multiply;
}

.button {
    display: inline-block;
    margin-top: 32px;
    padding: 12px 24px;
    border: 2px solid var(--green);
    border-radius: 4px;
    background-color: var(--green);
    color: #fff;
    font-weight: 700;
    text-decoration: none;
}

.button:hover {
    background-color: transparent;
    color: var(--green);
}

.about-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
    margin-top: 32px;
}

.about-photo {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 6px;
}

.about-text > :first-child {
    margin-top: 0;
}

@media (max-width: 700px) {
    .about-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .about-photo {
        max-width: 240px;
    }
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.service-card {
    padding: 28px;
    border: 1px solid var(--border);
    border-top: 3px solid var(--green);
    border-radius: 6px;
    background-color: #fff;
}

.service-card h2 {
    margin: 0 0 16px;
    color: var(--green);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 1.3;
}

.service-card p {
    margin: 0;
    color: var(--muted);
}

.service-card p + p {
    margin-top: 16px;
}

@media (max-width: 700px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

.contact-form {
    display: grid;
    gap: 12px;
    max-width: 640px;
    margin-top: 32px;
}

.contact-form label {
    margin-top: 12px;
    font-weight: 700;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--muted);
    border-radius: 4px;
    background-color: #fff;
    color: var(--text);
    font: inherit;
}

.contact-form textarea {
    resize: vertical;
}

.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
    outline: 3px solid var(--blue);
    outline-offset: 3px;
}

.form-note {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 0.875rem;
}

.contact-form .button {
    justify-self: start;
    margin-top: 12px;
    font: inherit;
    font-weight: 700;
}

.button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.button:disabled:hover {
    background-color: var(--green);
    color: #fff;
}

.testimonials {
    max-width: 1200px;
    margin: 0 auto;
    padding: 56px 24px;
}

.testimonials h2 {
    margin: 0 0 28px;
    color: var(--green);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 2rem;
    font-weight: 400;
    line-height: 1.2;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.testimonial-card {
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 28px;
    border: 1px solid var(--border);
    border-top: 3px solid var(--blue);
    border-radius: 6px;
    background-color: #fff;
}

.testimonial-card blockquote {
    margin: 0 0 24px;
}

.testimonial-card blockquote p {
    margin: 0;
}

.testimonial-card blockquote p + p {
    margin-top: 16px;
}

.testimonial-card figcaption {
    margin-top: auto;
}

.testimonial-card strong,
.testimonial-card span {
    display: block;
}

.testimonial-card strong {
    color: var(--green);
}

.testimonial-card span {
    color: var(--muted);
    font-size: 0.875rem;
}

@media (max-width: 700px) {
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}