/* =========================================================
   style.css — Lucas Prim's Blog
   Clean minimal light: white bg, near-black text, subtle grays
   ========================================================= */

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

/* ----- Typography Base ----- */
:root {
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  --color-bg: #ffffff;
  --color-text: #111111;
  --color-muted: #555555;
  --color-border: #e0e0e0;
  --color-accent: #0066cc;
  --color-code-bg: #f5f5f5;

  --max-width: 680px;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
}

/* ----- Document ----- */
html {
  font-size: 18px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  padding: var(--spacing-lg) var(--spacing-md);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ----- Layout ----- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
}

main {
  flex: 1;
}

/* ----- Site Header ----- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.site-header .container {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.site-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--color-text);
}

.site-title:hover {
  color: var(--color-accent);
}

.site-nav {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.9rem;
}

.site-nav a {
  color: var(--color-muted);
  text-decoration: none;
}

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

/* ----- Site Footer ----- */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-md);
  font-size: 0.85rem;
  color: var(--color-muted);
  text-align: center;
}

/* ----- Links ----- */
a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration: none;
}

/* ----- Index: Post List ----- */
.post-list {
  list-style: none;
}

.post-list-item {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.post-list-item:first-child {
  border-top: 1px solid var(--color-border);
}

.post-meta {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: var(--spacing-sm);
  font-variant-numeric: tabular-nums;
}

.post-list-title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-sm);
}

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

.post-list-title a:hover {
  color: var(--color-accent);
}

.post-excerpt {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-sm);
}

.read-more {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ----- Post Page ----- */
.post-header {
  margin-bottom: var(--spacing-xl);
}

.post-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

.post-date {
  font-size: 0.85rem;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
}

.post-hero {
  width: 100%;
  height: auto;
  border-radius: 4px;
  margin: var(--spacing-lg) 0;
  display: block;
}

/* ----- Post Body ----- */
.post-body {
  /* All content lives here */
}

.post-body h2 {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.post-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.post-body p {
  margin-bottom: var(--spacing-md);
}

.post-body ul,
.post-body ol {
  padding-left: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.post-body li {
  margin-bottom: var(--spacing-sm);
}

/* Code */
.post-body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-code-bg);
  padding: 0.15em 0.35em;
  border-radius: 3px;
}

.post-body pre {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--spacing-md);
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
  line-height: 1.5;
}

.post-body pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

/* Blockquote */
.post-body blockquote {
  border-left: 3px solid var(--color-border);
  padding-left: var(--spacing-md);
  margin-left: 0;
  margin-bottom: var(--spacing-md);
  color: var(--color-muted);
  font-style: italic;
}

/* Pull quote */
.pull-quote {
  font-size: 1.3rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: var(--color-text);
  border-top: 2px solid var(--color-text);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  margin: var(--spacing-xl) 0;
  font-style: normal;
}

/* Inline images */
.post-body img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
  margin: var(--spacing-lg) auto;
}

.post-body figure {
  margin: var(--spacing-lg) 0;
}

.post-body figcaption {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: var(--spacing-sm);
}

/* Horizontal rule */
.post-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-xl) 0;
}

/* Back link */
.back-link {
  display: inline-block;
  margin-top: var(--spacing-xl);
  font-size: 0.9rem;
  color: var(--color-muted);
  text-decoration: none;
}

.back-link:hover {
  color: var(--color-text);
}

/* ----- Index Page Intro ----- */
.page-intro {
  margin-bottom: var(--spacing-xl);
}

.page-intro p {
  color: var(--color-muted);
  font-size: 1rem;
}

/* ----- 404 Page ----- */
.error-page {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.error-page h1 {
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -0.05em;
  color: var(--color-border);
  margin-bottom: var(--spacing-sm);
}

.error-page p {
  color: var(--color-muted);
  margin-bottom: var(--spacing-lg);
}

/* ----- Responsive ----- */
@media (max-width: 480px) {
  html {
    font-size: 16px;
  }

  .post-title {
    font-size: 1.6rem;
  }

  .pull-quote {
    font-size: 1.1rem;
  }
}