/* ============================================================
   Site stylesheet
   Edit the :root variables below to retheme the whole site.
   ============================================================ */


/* --- Variables -------------------------------------------- */

:root {
  --font-sans: system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --color-text:        #1f2328;
  --color-text-muted:  #656d76;
  --color-bg:          #ffffff;
  --color-bg-subtle:   #f6f8fa;
  --color-border:      #d0d7de;
  --color-link:        #0969da;
  --color-link-hover:  #0550ae;

  --max-width: 740px;
  --gap: 1.5rem;
}


/* --- Reset ------------------------------------------------- */

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  margin: 0;
  padding: 0;
}


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

header, main, footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--gap);
  padding-right: var(--gap);
}

header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

main {
  padding-top: 2rem;
  padding-bottom: 3rem;
  min-height: 60vh;
}

footer {
  padding-top: 1.5rem;
  padding-bottom: 2rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}


/* --- Navigation -------------------------------------------- */

.site-title {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

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

nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-left: auto;
}

nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

nav a:hover {
  color: var(--color-link);
}


/* --- Typography -------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 600;
  margin: 1.75rem 0 0.5rem;
}

h1 { font-size: 1.875rem; margin-top: 0; }
h2 { font-size: 1.375rem; }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }

p {
  margin: 0 0 1rem;
}

small, time {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

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

li {
  margin-bottom: 0.25rem;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}


/* --- Links ------------------------------------------------- */

a {
  color: var(--color-link);
}

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


/* --- Images ------------------------------------------------ */

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

.cover-image {
  width: 100%;
  max-height: 340px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 1.75rem;
}


/* --- Tables ------------------------------------------------ */

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1.5rem 0;
  display: block;
  overflow-x: auto;
}

th, td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  text-align: left;
  white-space: nowrap;
}

th {
  background: var(--color-bg-subtle);
  font-weight: 600;
}

tr:nth-child(even) td {
  background: var(--color-bg-subtle);
}


/* --- Code -------------------------------------------------- */

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 0.1em 0.4em;
}

pre {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin: 1.25rem 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.875rem;
}


/* --- Blockquote -------------------------------------------- */

blockquote {
  margin: 1.25rem 0;
  padding: 0.25rem 0 0.25rem 1rem;
  border-left: 3px solid var(--color-border);
  color: var(--color-text-muted);
}


/* --- Post cards (list pages) ------------------------------- */

article {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

article:last-of-type {
  border-bottom: none;
}

article h2, article h3 {
  margin: 0 0 0.25rem;
}

.post-entry {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.post-thumb {
  width: 120px;
  height: 80px;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
}


/* --- Profile block (homepage) ------------------------------ */

.profile-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin: 0 0 2.5rem;
}

.profile-image {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.profile-header h1 {
  margin: 0 0 0.25rem;
}

.profile-header p {
  margin: 0.25rem 0;
}


/* --- Post navigation --------------------------------------- */

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
}

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


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

@media (max-width: 500px) {
  h1 { font-size: 1.5rem; }

  .profile-header {
    flex-direction: column;
    text-align: center;
  }
}