/* Professional, sober styling — no animations, no JavaScript */

:root {
    --color-text: #1a1a1a;
    --color-text-muted: #555;
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-border: #e0e0e0;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --max-width: 720px;
    --spacing: 1.5rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-text: #e8e8e8;
        --color-text-muted: #a0a0a0;
        --color-bg: #121212;
        --color-surface: #1e1e1e;
        --color-border: #333;
        --color-accent: #60a5fa;
        --color-accent-hover: #93bbfd;
    }
}

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

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}

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

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

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

/* Header */

.site-header {
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-surface);
    padding: var(--spacing) 0;
    margin-bottom: calc(var(--spacing) * 2);
}

.site-header .container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.site-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
}

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

.site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
}

.site-nav a {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    color: var(--color-accent);
}

/* Footer */

.site-footer {
    border-top: 1px solid var(--color-border);
    margin-top: calc(var(--spacing) * 3);
    padding: var(--spacing) 0;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.site-footer .container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.site-footer p {
    margin: 0;
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Typography */

h1 {
    font-size: 1.75rem;
    font-weight: 600;
    margin: 0 0 1rem;
    line-height: 1.3;
}

h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 0.75rem;
}

h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.section {
    margin-bottom: calc(var(--spacing) * 2);
}

.hero .tagline {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin: 0 0 1rem;
}

.hero .intro {
    margin: 0;
}

/* Skills */

.skills-grid {
    display: grid;
    gap: 1.25rem;
}

.skill-group ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-group li {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 0.25rem 0.625rem;
    font-size: 0.875rem;
    border-radius: 3px;
}

/* Lists */

.link-list,
.contact-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.link-list li {
    margin-bottom: 0.5rem;
}

.contact-list li {
    margin-bottom: 1rem;
}

.contact-list .label {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-bottom: 0.125rem;
}

/* Cards */

.card-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 1.25rem;
    border-radius: 4px;
}

.card h2 {
    margin-top: 0;
}

.card .meta {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin: 0 0 0.75rem;
}

.card-links {
    display: flex;
    gap: 1rem;
    margin-top: 0.75rem;
    font-size: 0.9375rem;
}

.tag-list {
    list-style: none;
    margin: 0.75rem 0 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.tag-list li {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 0.125rem 0.5rem;
    border-radius: 3px;
}

/* Empty state */

.empty-state {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    border-radius: 4px;
    color: var(--color-text-muted);
}

.empty-state p {
    margin: 0 0 0.75rem;
}

.empty-state p:last-child {
    margin-bottom: 0;
}

/* Blog */

.blog-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

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

.blog-post:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.blog-post-header h2 {
    margin-bottom: 0.25rem;
}

.blog-post-header time {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Prose (rendered Markdown) */

.prose p {
    margin: 0 0 1rem;
}

.prose p:last-child {
    margin-bottom: 0;
}

.prose ul,
.prose ol {
    margin: 0 0 1rem;
    padding-left: 1.5rem;
}

.prose li {
    margin-bottom: 0.25rem;
}

.prose strong {
    font-weight: 600;
}

/* Responsive */

@media (min-width: 600px) {
    .site-header .container {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

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

    .site-footer .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}