/* ============================================================
   fastiads Blog — Base Styles
   ============================================================ */

:root {
  --color-brand: #0057ff;
  --color-text: #1a1a2e;
  --color-muted: #555;
  --color-bg: #ffffff;
  --color-border: #e5e7eb;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --max-width: 720px;
  --spacing-xl: 2.5rem;
  --spacing-lg: 1.5rem;
  --spacing-md: 1rem;
  --spacing-sm: 0.5rem;
}

/* 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;
}

a {
  color: var(--color-brand);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

/* ---- Header ---- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
}

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

.site-title {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-text);
}
.site-title:hover { text-decoration: none; color: var(--color-brand); }

.back-link {
  font-size: 0.9rem;
  color: var(--color-muted);
}
.back-link:hover { color: var(--color-brand); }

/* ---- Main content ---- */
.wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.page-content { padding: var(--spacing-xl) 0; }

/* ---- Post list (home) ---- */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-list li {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
}
.post-list li:last-child { border-bottom: none; }

.post-meta {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.post-list h2 {
  margin: var(--spacing-sm) 0;
  font-size: 1.3rem;
}

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

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

.post-title {
  font-size: 2rem;
  line-height: 1.25;
  margin: 0 0 var(--spacing-sm);
}

.post-categories .category {
  display: inline-block;
  background: var(--color-border);
  border-radius: 3px;
  padding: 0.15rem 0.5rem;
  font-size: 0.8rem;
  margin-right: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-content h2, .post-content h3 { margin-top: 2rem; }
.post-content img { max-width: 100%; border-radius: 4px; }
.post-content pre {
  background: #f5f5f5;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--spacing-md);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}
.post-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: #f5f5f5;
  padding: 0.1em 0.3em;
  border-radius: 3px;
}
.post-content pre code {
  background: none;
  padding: 0;
}

.post-footer {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-xl);
  font-size: 0.875rem;
  color: var(--color-muted);
}
.site-footer p { margin: 0.25rem 0; }
.site-footer a { color: var(--color-muted); }
.site-footer a:hover { color: var(--color-brand); }

/* ---- Page heading ---- */
.page-heading {
  font-size: 1.75rem;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}