/* ============================================
   Swarm Signal Theme - The Swarm Concept
   ============================================ */

/* ============================================
   CSS Variables - Brand Colors & Typography
   ============================================ */
:root {
    /* Colors */
    --color-primary: #3D4A55;        /* Slate Gray */
    --color-background: #FDFCFB;     /* Off-White */
    --color-accent: #4A9382;         /* Muted Teal */
    --color-neutral: #EAEAEA;        /* Light Silver */
    --color-white: #FFFFFF;
    
    /* Typography */
    --font-serif: 'Lora', Georgia, serif;
    --font-sans: 'Nunito Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-unit: 1rem;
    --max-content-width: 700px;
    --max-site-width: 1200px;
}

/* ============================================
   Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 18px;
    line-height: 1.6;
}

body {
    font-family: var(--font-sans);
    color: var(--color-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: calc(var(--spacing-unit) * 0.75);
}

h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-unit);
}

h2 {
    font-size: 2rem;
    margin-top: calc(var(--spacing-unit) * 2);
}

h3 {
    font-size: 1.5rem;
    margin-top: calc(var(--spacing-unit) * 1.5);
}

p {
    margin-bottom: var(--spacing-unit);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* ============================================
   Layout
   ============================================ */
.site-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-main {
    flex: 1;
}

.home-template .site-main {
    padding: 0;
}

.post-template .site-main {
    padding: calc(var(--spacing-unit) * 3) var(--spacing-unit);
}

.page-template .site-main {
    padding: 0;
}

.content-wrapper {
    max-width: var(--max-site-width);
    margin: 0 auto;
}

.home-wrapper {
    max-width: var(--max-site-width);
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

/* ============================================
   Header
   ============================================ */
.site-header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-neutral);
    padding: calc(var(--spacing-unit) * 1.5) var(--spacing-unit);
}

.site-header-content {
    max-width: var(--max-site-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--color-primary);
    text-decoration: none;
}

.site-logo:hover {
    color: var(--color-primary);
}

.site-logo-mark {
    height: 36px;
    width: 36px;
    object-fit: contain;
}

.site-logo-text {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.site-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: calc(var(--spacing-unit) * 1.5);
    align-items: center;
}

.site-nav a {
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   Home Hero
   ============================================ */
.home-hero {
    width: 100%;
    line-height: 0;
}

.home-hero-image {
    width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   Home Sections
   ============================================ */
.home-content {
    padding: calc(var(--spacing-unit) * 4) 0;
}

.home-section {
    margin-bottom: calc(var(--spacing-unit) * 5);
}

.home-section-title {
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.home-section-description {
    font-size: 1.1rem;
    color: var(--color-primary);
    opacity: 0.7;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.home-section-link {
    display: inline-block;
    margin-top: calc(var(--spacing-unit) * 2);
    font-weight: 600;
    font-size: 1rem;
}

/* ============================================
   Post Feed
   ============================================ */
.post-feed,
.home-post-feed {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.post-card,
a.home-post-card {
    display: block;
    background: var(--color-white);
    border: 1px solid var(--color-neutral);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    color: var(--color-primary);
    cursor: pointer;
}

.home-post-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.home-post-body {
    padding: calc(var(--spacing-unit) * 1.5);
}

.post-card:hover,
a.home-post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(61, 74, 85, 0.1);
    color: var(--color-primary);
}

.post-card-image-link {
    display: block;
}

.post-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.post-card-content {
    padding: calc(var(--spacing-unit) * 1.5);
}

.post-card-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.post-card-title,
.home-post-title {
    font-size: 1.5rem;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
    color: var(--color-primary);
}

.post-card-title a {
    color: var(--color-primary);
}

.post-card-excerpt,
.home-post-excerpt {
    font-size: 0.95rem;
    color: var(--color-primary);
    opacity: 0.8;
    margin-bottom: calc(var(--spacing-unit) * 0.75);
}

.post-card-meta,
.home-post-meta {
    display: flex;
    gap: calc(var(--spacing-unit) * 0.75);
    font-size: 0.85rem;
    color: var(--color-primary);
    opacity: 0.6;
}

/* ============================================
   Single Post/Page
   ============================================ */
.post,
.page {
    max-width: var(--max-content-width);
    margin: 0 auto;
}

.post-header,
.page-header {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.post-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: calc(var(--spacing-unit) * 0.75);
}

.post-title,
.page-title {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: calc(var(--spacing-unit) * 0.75);
}

.post-excerpt,
.page-excerpt {
    font-size: 1.25rem;
    color: var(--color-primary);
    opacity: 0.8;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: calc(var(--spacing-unit) * 0.5);
    font-size: 0.9rem;
    color: var(--color-primary);
    opacity: 0.6;
}

.post-author a {
    color: var(--color-primary);
}

.post-meta-sep {
    opacity: 0.5;
}

.post-feature-image,
.page-feature-image {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.post-feature-image img,
.page-feature-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

/* ============================================
   Post Content
   ============================================ */
.post-content,
.page-content {
    font-size: 1.1rem;
    line-height: 1.8;
}

.page-template .page {
    padding: calc(var(--spacing-unit) * 3) var(--spacing-unit);
}

.post-content h2,
.page-content h2 {
    margin-top: calc(var(--spacing-unit) * 3);
}

.post-content h3,
.page-content h3 {
    margin-top: calc(var(--spacing-unit) * 2);
}

.post-content blockquote,
.page-content blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: calc(var(--spacing-unit) * 1.5);
    margin: calc(var(--spacing-unit) * 2) 0;
    font-style: italic;
    color: var(--color-primary);
    opacity: 0.9;
}

.post-content code,
.page-content code {
    background: var(--color-neutral);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
}

.post-content pre,
.page-content pre {
    background: var(--color-neutral);
    padding: var(--spacing-unit);
    border-radius: 8px;
    overflow-x: auto;
    margin: calc(var(--spacing-unit) * 2) 0;
}

.post-content img,
.page-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: calc(var(--spacing-unit) * 2) 0;
}

.post-content table,
.page-content table {
    width: 100%;
    border-collapse: collapse;
    margin: calc(var(--spacing-unit) * 2) 0;
    font-size: 0.95rem;
}

.post-content th,
.page-content th {
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
    text-align: left;
    padding: 0.75rem 1rem;
}

.post-content td,
.page-content td {
    border-bottom: 1px solid var(--color-neutral);
    padding: 0.75rem 1rem;
    vertical-align: top;
}

.post-content tr:last-child td,
.page-content tr:last-child td {
    border-bottom: 2px solid var(--color-accent);
}

.post-content ul,
.post-content ol,
.page-content ul,
.page-content ol {
    margin: var(--spacing-unit) 0;
    padding-left: calc(var(--spacing-unit) * 1.5);
}

.post-content li,
.page-content li {
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

/* ============================================
   Post Footer
   ============================================ */
.post-footer {
    margin-top: calc(var(--spacing-unit) * 4);
    padding-top: calc(var(--spacing-unit) * 2);
    border-top: 1px solid var(--color-neutral);
}

.post-tags {
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.post-tags-label {
    font-weight: 600;
    margin-right: calc(var(--spacing-unit) * 0.5);
}

.post-tag-link {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    margin-right: 0.5rem;
    background: var(--color-neutral);
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--color-primary);
}

.post-disclosure {
    margin-top: calc(var(--spacing-unit) * 2);
    padding: var(--spacing-unit);
    background: #FFF9E6;
    border-left: 4px solid #FFD600;
    border-radius: 4px;
    font-size: 0.9rem;
}

/* ============================================
   Related Posts
   ============================================ */
.related-posts {
    max-width: var(--max-content-width);
    margin: calc(var(--spacing-unit) * 5) auto 0;
    padding-top: calc(var(--spacing-unit) * 3);
    border-top: 1px solid var(--color-neutral);
}

.related-posts-title {
    font-size: 2rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.related-posts-feed {
    display: grid;
    gap: calc(var(--spacing-unit) * 1.5);
}

.related-post-card {
    padding: calc(var(--spacing-unit) * 1.5);
    background: var(--color-white);
    border: 1px solid var(--color-neutral);
    border-radius: 8px;
}

.related-post-title {
    font-size: 1.25rem;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.related-post-title a {
    color: var(--color-primary);
}

.related-post-date {
    font-size: 0.85rem;
    color: var(--color-primary);
    opacity: 0.6;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background-color: var(--color-white);
    border-top: 1px solid var(--color-neutral);
    padding: calc(var(--spacing-unit) * 3) var(--spacing-unit);
    margin-top: calc(var(--spacing-unit) * 5);
}

.site-footer-content {
    max-width: var(--max-site-width);
    margin: 0 auto;
    text-align: center;
}

.site-footer-tagline {
    font-size: 1.1rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.site-footer-nav {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.site-footer-nav nav {
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 2);
}

.site-footer-nav a {
    font-weight: 600;
    font-size: 0.9rem;
}

.site-footer-copyright {
    font-size: 0.85rem;
    color: var(--color-primary);
    opacity: 0.6;
}

/* ============================================
   Tag Page Header
   ============================================ */
.tag-header {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.tag-header-with-image {
    min-height: 300px;
}

.tag-header-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

.tag-header-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: var(--color-white);
}

.tag-header-overlay .tag-title {
    color: var(--color-white);
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 0.25);
}

.tag-header-overlay .tag-description {
    color: var(--color-white);
    opacity: 0.9;
    font-size: 1.1rem;
    margin-bottom: 0;
}

.tag-header-plain {
    max-width: var(--max-site-width);
    margin: 0 auto;
    padding: calc(var(--spacing-unit) * 3) var(--spacing-unit);
}

.tag-header-plain .tag-title {
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.tag-header-plain .tag-description {
    font-size: 1.1rem;
    opacity: 0.7;
}

.tag-template .site-main {
    padding: 0;
}

.tag-template .home-content {
    padding-top: calc(var(--spacing-unit) * 3);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    html {
        font-size: 16px;
    }

    .site-logo-text {
        font-size: 1.2rem;
    }

    .post-title,
    .page-title {
        font-size: 2rem;
    }

    .site-nav ul {
        gap: var(--spacing-unit);
    }

    .site-nav a {
        font-size: 0.8rem;
    }

    .post-feed,
    .home-post-feed {
        grid-template-columns: 1fr;
    }

    .home-section-title {
        font-size: 1.8rem;
    }

    .tag-header-with-image {
        min-height: 200px;
    }

    .tag-header-image {
        height: 200px;
    }

    .tag-header-overlay .tag-title {
        font-size: 1.8rem;
    }
}