:root {
    /* Winter-inspired colors used throughout the site. */
    --ink: #30333b;
    --muted: #626773;
    --paper: #f4f5f7;
    --surface: #ffffff;
    --blue: #c9e2ee;
    --blue-deep: #315d70;
    --lavender: #dcd7ed;
    --pink: #e9cfd5;
    --line: #d5d9e0;
    --max-width: 1120px;
}

/* Use predictable sizing and remove browser default margins. */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: "Arial Narrow", "Roboto Condensed", Arial, sans-serif;
    font-size: 1.05rem;
    line-height: 1.7;
}

/* Keep headings visually distinct while retaining a readable body font. */
h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3,
.brand {
    font-family: Univers, "Avenir Next", Arial, sans-serif;
    line-height: 1.15;
}

h1 {
    font-size: clamp(2.3rem, 7vw, 4.8rem);
    letter-spacing: -0.04em;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.7rem);
}

h3 {
    font-size: 1.6rem;
}

/* Link and keyboard-focus states support mouse and keyboard users. */
a {
    color: var(--blue-deep);
}

a:hover {
    color: var(--ink);
}

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

/* Shared header and responsive navigation. */
.site-header {
    background: var(--blue);
    border-bottom: 1px solid #b6d0dc;
    padding: 1.25rem 1.25rem 0;
}

.site-header__inner,
main,
.site-footer {
    width: min(100%, var(--max-width));
    margin: 0 auto;
}

.brand {
    color: var(--ink);
    display: inline-block;
    font-size: 1.35rem;
    font-weight: 700;
    text-decoration: none;
}

.tagline {
    color: var(--muted);
    margin: 0.15rem 0 1rem;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin: 0 -0.5rem;
}

.site-nav a {
    border-bottom: 3px solid transparent;
    color: var(--ink);
    padding: 0.7rem 0.75rem;
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a.active {
    border-bottom-color: var(--blue-deep);
}

/* Mobile-first page spacing and introductory sections. */
main {
    padding: 2.5rem 1.25rem 4rem;
}

.hero,
.page-intro {
    max-width: 780px;
    padding: 2rem 0 3rem;
}

.hero {
    margin: 0 auto;
    text-align: center;
}

.hero .intro {
    font-size: 1.2rem;
    margin: 0 auto 1.5rem;
    max-width: 650px;
}

.page-intro {
    margin: 0 auto;
    text-align: center;
}

.page-intro h1 {
    margin-bottom: 1rem;
}

.page-intro p:last-child {
    font-size: 1.15rem;
}

.eyebrow {
    color: var(--blue-deep);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    margin-bottom: 0.65rem;
    text-transform: uppercase;
}

/* Primary action styling without animation or decorative effects. */
.button {
    background: var(--blue-deep);
    border: 2px solid var(--blue-deep);
    color: white;
    display: inline-block;
    font-weight: 700;
    padding: 0.7rem 1.2rem;
    text-decoration: none;
}

.button:hover {
    background: var(--ink);
    color: white;
}

/* Home page dog cards and supporting callout. */
.content-section {
    padding: 2rem 0;
}

.section-heading {
    margin-bottom: 1.5rem;
    max-width: 620px;
}

.section-heading h2 {
    margin-bottom: 0.5rem;
}

.dog-grid,
.culture-grid {
    display: grid;
    gap: 1.25rem;
}

.dog-card,
.culture-card,
.contact-card,
.info-panel,
.note-section {
    background: var(--surface);
    border: 1px solid var(--line);
}

.dog-card {
    overflow: hidden;
}

.dog-card img {
    background: var(--lavender);
    display: block;
    height: auto;
    width: 100%;
}

.dog-card__body {
    padding: 1.35rem;
}

.dog-card h3 {
    margin-bottom: 0.4rem;
}

.dog-meta {
    color: var(--muted);
    font-size: 0.95rem;
}

.split-callout {
    background: var(--lavender);
    display: grid;
    gap: 1rem;
    margin: 2rem 0;
    padding: 1.5rem;
}

.split-callout h2 {
    margin-bottom: 0;
}

.link-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
}

.text-link {
    font-weight: 700;
    text-decoration-thickness: 2px;
    text-underline-offset: 0.2em;
}

/* History page image, article columns, and characteristics panel. */
.feature-image {
    margin: 0 auto 3rem;
    max-width: 900px;
    text-align: center;
}

.feature-image img {
    background: var(--blue);
    display: block;
    height: auto;
    width: 100%;
}

.feature-image figcaption {
    color: var(--muted);
    font-size: 0.9rem;
    padding-top: 0.65rem;
}

.article-layout {
    display: grid;
    gap: 2rem;
}

.article-content {
    max-width: 720px;
}

.article-content section+section {
    border-top: 1px solid var(--line);
    margin-top: 2rem;
    padding-top: 2rem;
}

.article-content h2 {
    margin-bottom: 0.7rem;
}

.info-panel {
    padding: 1.5rem;
}

.info-panel h2 {
    margin-bottom: 0.8rem;
}

ul {
    padding-left: 1.25rem;
}

.info-panel li+li {
    margin-top: 0.55rem;
}

/* Culture page topic cards and responsible-care note. */
.culture-grid {
    max-width: 980px;
    margin: 0 auto 3rem;
}

.culture-card {
    padding: 1.35rem;
}

.culture-card h2 {
    font-size: 1.55rem;
    margin-bottom: 0.6rem;
}

.card-number {
    color: var(--blue-deep);
    font-weight: 700;
}

.note-section {
    margin: 0 auto;
    max-width: 820px;
    padding: 1.5rem;
}

.note-section h2 {
    margin-bottom: 0.65rem;
}

/* Contact details and form share cards that stack on small screens. */
.contact-layout {
    display: grid;
    gap: 1.25rem;
    margin: 0 auto;
    max-width: 980px;
}

.contact-card {
    padding: 1.5rem;
}

.contact-card h2 {
    margin-bottom: 1rem;
}

.contact-card dl {
    margin: 0;
}

.contact-card dl div {
    border-top: 1px solid var(--line);
    display: grid;
    gap: 0.25rem;
    padding: 0.8rem 0;
}

.contact-card dt {
    color: var(--muted);
    font-weight: 700;
}

.contact-card dd {
    margin: 0;
}

/* Form controls use full-width fields and inherit the site's readable type. */
.form-field {
    display: grid;
    gap: 0.35rem;
    margin-bottom: 1rem;
}

.form-field label {
    font-weight: 700;
}

.form-field input,
.form-field textarea {
    background: var(--paper);
    border: 1px solid #aeb5c0;
    border-radius: 0;
    color: var(--ink);
    font: inherit;
    padding: 0.7rem;
    width: 100%;
}

.form-field textarea {
    min-height: 9rem;
    resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus {
    border-color: var(--blue-deep);
    outline: 3px solid var(--pink);
    outline-offset: 2px;
}

button.button {
    cursor: pointer;
    font: inherit;
}

/* Footer stays flexible when its link wraps on small screens. */
.site-footer {
    align-items: center;
    border-top: 1px solid var(--line);
    color: var(--muted);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
    justify-content: space-between;
    padding: 1.5rem 1.25rem 2rem;
}

.site-footer p {
    margin: 0;
}

/* Tablet layout: introduce two-column card grids and wider spacing. */
@media (min-width: 640px) {
    .site-header {
        padding-inline: 2rem;
    }

    main {
        padding: 4rem 2rem 5rem;
    }

    .site-footer {
        padding-inline: 2rem;
    }

    .dog-grid,
    .culture-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .split-callout {
        grid-template-columns: 1fr 1.4fr;
        padding: 2rem;
    }

    .split-callout .link-row {
        grid-column: 2;
    }

    .contact-card dl div {
        grid-template-columns: 8rem 1fr;
    }
}

/* Desktop layout: align branding, navigation, and long-form content. */
@media (min-width: 900px) {
    .site-header__inner {
        align-items: center;
        display: grid;
        gap: 1.5rem;
        grid-template-columns: auto 1fr auto;
    }

    .tagline {
        margin: 0;
    }

    .site-nav {
        justify-content: flex-end;
        margin: 0;
    }

    .article-layout {
        align-items: start;
        grid-template-columns: minmax(0, 1fr) 300px;
    }

    .contact-layout {
        grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    }

    .info-panel {
        position: sticky;
        top: 1rem;
    }
}