/* ============================================================
   COREYSR THEME — screen.css
   Brand: Detection engineering with a clinician's eye
   coreysr.com
   ============================================================ */

/* --- Reset & Variables ------------------------------------ */

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

:root {
    --bg:           #fafaf8;
    --surface:      #fafaf8;
    --text:         #1c1c1a;
    --text-muted:   #716f6a;
    --accent:       #3d5a80;
    --accent-dark:  #2e4460;
    --border:       #e8e5df;
    --max-w:        720px;
    --font-body:    Palatino, 'Palatino Linotype', 'Book Antiqua', Georgia, serif;
    --font-ui:      -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

/* --- Base ------------------------------------------------- */

html {
    font-size: 18px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.75;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
}

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

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

/* --- Layout ----------------------------------------------- */

.site-header,
#main-content,
.site-footer {
    width: 100%;
    max-width: calc(var(--max-w) + 4rem);
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
}

#main-content {
    flex: 1;
}

/* --- Site Header ------------------------------------------ */

.site-header {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-title {
    font-family: var(--font-ui);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text);
    text-decoration: none;
    white-space: nowrap;
}

.site-title:hover {
    color: var(--accent);
    text-decoration: none;
}

/* Ghost navigation output: <ul class="nav"> */
.site-nav .nav {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.site-nav .nav a {
    font-family: var(--font-ui);
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
}

.site-nav .nav a:hover,
.site-nav .nav-current a {
    color: var(--accent);
    text-decoration: none;
}

/* --- Site Footer ------------------------------------------ */

.site-footer {
    padding-top: 2rem;
    padding-bottom: 2rem;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.site-footer p {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* --- Hero (Home) ------------------------------------------ */

.hero {
    padding-top: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border);
}

.hero-inner {
    max-width: var(--max-w);
}

.hero-tagline {
    font-size: 2rem;
    font-weight: normal;
    font-style: italic;
    line-height: 1.3;
    color: var(--text);
    margin-bottom: 1rem;
}

.hero-sub {
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 560px;
}

/* --- Post Feed (Home) ------------------------------------- */

.post-feed {
    padding-top: 0.5rem;
    padding-bottom: 4rem;
}

.post-feed-inner {
    max-width: var(--max-w);
}

.post-card {
    padding: 2rem 0;
    border-bottom: 1px solid var(--border);
}

.post-card:last-of-type {
    border-bottom: none;
}

.post-card-title {
    font-size: 1.2rem;
    font-weight: normal;
    line-height: 1.4;
    margin-bottom: 0.35rem;
}

.post-card-title a {
    color: var(--text);
    text-decoration: none;
}

.post-card-title a:hover {
    color: var(--accent);
    text-decoration: none;
}

.post-card-date {
    display: block;
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.post-card-excerpt {
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

.post-card-link {
    font-family: var(--font-ui);
    font-size: 0.85rem;
    color: var(--accent);
    text-decoration: none;
}

.post-card-link:hover {
    color: var(--accent-dark);
    text-decoration: none;
}

.no-posts {
    padding: 2rem 0;
    color: var(--text-muted);
    font-style: italic;
}

/* --- Individual Post -------------------------------------- */

.post {
    padding-bottom: 5rem;
}

.post-header {
    padding-top: 3rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2.5rem;
}

.post-header-inner {
    max-width: var(--max-w);
}

.post-title {
    font-size: 1.75rem;
    font-weight: normal;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: var(--font-ui);
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* --- Post Content Typography ------------------------------ */

.post-content-wrap {
    max-width: var(--max-w);
}

.post-content p,
.post-content ul,
.post-content ol,
.post-content blockquote {
    margin-bottom: 1.4rem;
}

.post-content h2 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
    line-height: 1.35;
}

.post-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.6rem;
}

.post-content ul,
.post-content ol {
    padding-left: 1.5rem;
}

.post-content li {
    margin-bottom: 0.4rem;
}

.post-content a {
    color: var(--accent);
}

.post-content a:hover {
    color: var(--accent-dark);
}

.post-content blockquote {
    border-left: 3px solid var(--border);
    padding-left: 1.25rem;
    color: var(--text-muted);
    font-style: italic;
}

.post-content blockquote p {
    margin-bottom: 0;
}

.post-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2.5rem 0;
}

/* Inline code */
.post-content code {
    font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Cascadia Code', Consolas, monospace;
    font-size: 0.85em;
    background: var(--border);
    padding: 0.15em 0.4em;
    border-radius: 3px;
}

/* Code blocks */
.post-content pre {
    background: #1c1c1e;
    color: #f0f0ee;
    padding: 1.25rem 1.5rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1.75rem 0;
    line-height: 1.6;
}

.post-content pre code {
    background: transparent;
    padding: 0;
    font-size: 0.85rem;
    color: inherit;
}

/* --- Koenig Editor (required by Ghost validator) ---------- */

.kg-width-wide {
    margin-left: -4rem;
    margin-right: -4rem;
}

.kg-width-full {
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    width: 100vw;
}

@media (max-width: 640px) {
    .kg-width-wide {
        margin-left: -2rem;
        margin-right: -2rem;
    }
}

/* --- Post Footer ------------------------------------------ */

.post-footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.post-disclosure {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 1.25rem;
}

.post-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.post-nav-item {
    font-family: var(--font-ui);
    font-size: 0.85rem;
    color: var(--accent);
    text-decoration: none;
    max-width: 48%;
}

.post-nav-item:hover {
    color: var(--accent-dark);
}

.post-nav-next {
    margin-left: auto;
    text-align: right;
}

/* --- Pages ------------------------------------------------ */

.page {
    padding-bottom: 5rem;
}

.page-header {
    padding-top: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2.5rem;
}

.page-header-inner {
    max-width: var(--max-w);
}

.page-title {
    font-size: 1.75rem;
    font-weight: normal;
}

.page-content-wrap {
    max-width: var(--max-w);
}

.page-content p {
    margin-bottom: 1.25rem;
}

.page-content a {
    color: var(--accent);
}

/* About placeholder notice */
.about-placeholder {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

/* Contact email */
.contact-email {
    font-size: 1.1rem;
    margin: 1.5rem 0;
}

.contact-email a {
    color: var(--accent);
    font-family: var(--font-ui);
}

/* --- Responsive -------------------------