/* ==========================================================================
   Kattguiden — Design System
   Inspirerad av The Spruce Pets & Cats.com
   Ren, ljus, content-first med diskreta färger
   ========================================================================== */

/* --- Design tokens --- */
:root {
    /* Colors — warm palette with more contrast */
    --color-bg: #faf9f7;
    --color-bg-soft: #f0eeeb;
    --color-bg-card: #ffffff;
    --color-bg-hero: #2c3e2d;
    --color-text: #1a1a1a;
    --color-text-secondary: #555555;
    --color-text-muted: #888888;
    --color-accent: #2e6b4a;
    --color-accent-hover: #1d4e34;
    --color-accent-light: #e4f0ea;
    --color-border: #d5d2cd;
    --color-border-light: #e5e3df;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Merriweather', Georgia, 'Times New Roman', serif;

    /* Spacing */
    --max-width: 1120px;
    --content-width: 720px;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* --- Base --- */
body {
    font-family: var(--font-sans);
    font-size: 16px;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* --- Header --- */
.site-header {
    border-bottom: 1px solid var(--color-border);
    background: #ffffff;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo:hover {
    text-decoration: none;
    opacity: 0.85;
}

.logo-img {
    height: 36px;
    width: auto;
}

.nav-list {
    list-style: none;
    display: flex;
    gap: var(--space-xl);
}

.nav-list a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: var(--space-sm) 0;
    border-bottom: 2px solid transparent;
    transition: all 0.15s ease;
}

.nav-list a:hover {
    color: var(--color-text);
    text-decoration: none;
    border-bottom-color: var(--color-accent);
}

/* --- Breadcrumbs --- */
.breadcrumbs {
    background: var(--color-bg-soft);
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--space-sm) 0;
}

.breadcrumbs ol {
    list-style: none;
    display: flex;
    gap: var(--space-sm);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.breadcrumbs li::after {
    content: '›';
    margin-left: var(--space-sm);
    color: var(--color-text-muted);
}

.breadcrumbs li:last-child::after {
    display: none;
}

.breadcrumbs a {
    color: var(--color-text-secondary);
}

.breadcrumbs [aria-current="page"] {
    color: var(--color-text);
}

/* --- Hero --- */
.hero {
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    max-width: none;
    margin: calc(-1 * var(--space-lg)) calc(-1 * var(--space-lg)) var(--space-2xl);
    background: var(--color-bg-hero);
    color: #ffffff;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
    color: #ffffff;
}

.hero-logo {
    height: 48px;
    width: auto;
    margin: 0 auto var(--space-lg);
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.hero-lead {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    max-width: 540px;
    margin: 0 auto;
}

/* --- Category grid --- */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all 0.15s ease;
    border: 1px solid var(--color-border);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.category-card:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.category-icon {
    font-size: 1.75rem;
}

.category-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text);
}

.category-count {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* --- Sections --- */
.section {
    margin-bottom: var(--space-3xl);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}

.section-header h2 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.see-all {
    font-size: 0.85rem;
    font-weight: 500;
}

.page-header {
    margin: var(--space-xl) 0 var(--space-2xl);
}

.page-header h1 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.page-header p {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
}

/* --- Article cards (grid) --- */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-xl);
}

.article-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.15s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.article-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-3px);
}

.article-card-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-bg-soft);
}

.article-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-card-body {
    padding: var(--space-lg);
}

.article-card-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.article-card-body h2,
.article-card-body h3 {
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--space-sm);
}

.article-card-body h2 { font-size: 1.15rem; }
.article-card-body h3 { font-size: 1.05rem; }

.article-card-body h2 a,
.article-card-body h3 a {
    color: var(--color-text);
}

.article-card-body h2 a:hover,
.article-card-body h3 a:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.article-card-body p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

.article-card-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* --- Article page --- */
.article-page {
    max-width: var(--content-width);
    margin: 0 auto;
}

.article-header {
    margin: var(--space-xl) 0 var(--space-2xl);
}

.article-category-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    background: var(--color-accent-light);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.article-header h1 {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.article-summary {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.article-meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* --- Table of contents --- */
.toc {
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.toc h2 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.toc ul {
    list-style: none;
}

.toc li {
    padding: var(--space-xs) 0;
}

.toc a {
    color: var(--color-text);
    font-size: 0.9rem;
    font-weight: 500;
}

.toc a:hover {
    color: var(--color-accent);
}

/* --- Article body --- */
.article-body {
    font-size: 1.05rem;
    line-height: 1.8;
}

.article-body h2 {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 700;
    margin: var(--space-2xl) 0 var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border-light);
}

.article-body h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: var(--space-xl) 0 var(--space-sm);
}

.article-body p {
    margin-bottom: var(--space-md);
}

.article-body ul, .article-body ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-xl);
}

.article-body li {
    margin-bottom: var(--space-sm);
}

.article-body strong {
    font-weight: 600;
}

/* --- Tags --- */
.article-tags {
    margin: var(--space-2xl) 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    background: var(--color-bg-soft);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-light);
}

/* --- Sources --- */
.sources {
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.sources h2 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.sources ul {
    list-style: none;
}

.sources li {
    margin-bottom: var(--space-xs);
    font-size: 0.9rem;
}

/* --- FAQ --- */
.faq-list {
    max-width: var(--content-width);
}

.faq-item {
    border-bottom: 1px solid var(--color-border-light);
}

.faq-item summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    padding: var(--space-lg) 0;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text);
    transition: color 0.15s ease;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
    content: '+';
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-text-muted);
    transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item summary:hover {
    color: var(--color-accent);
}

.faq-answer {
    padding-bottom: var(--space-lg);
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.faq-answer p { margin-bottom: var(--space-md); }
.faq-answer p:last-child { margin-bottom: 0; }

.faq-related {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
    padding-bottom: var(--space-md);
}

/* --- Related articles --- */
.related-articles {
    margin-top: var(--space-3xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-border);
}

/* --- Footer --- */
.site-footer {
    background: var(--color-bg-soft);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-3xl);
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-2xl);
    padding: var(--space-3xl) var(--space-lg);
}

.footer-brand .logo {
    display: inline-block;
    margin-bottom: var(--space-sm);
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    max-width: 320px;
}

.footer-nav h3 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.footer-nav ul {
    list-style: none;
}

.footer-nav li {
    margin-bottom: var(--space-sm);
}

.footer-nav a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.footer-nav a:hover {
    color: var(--color-text);
}

.footer-bottom {
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        height: auto;
        padding: var(--space-md) 0;
        gap: var(--space-sm);
    }

    .nav-list {
        gap: var(--space-md);
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero { padding: var(--space-2xl) var(--space-md); }
    .hero h1 { font-size: 1.8rem; }

    .article-grid {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .article-header h1 { font-size: 1.6rem; }

    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}