/* =========================
   mattsly.com — understated, readable, a little slick
   ========================= */

/* ===== Tokens ===== */
:root {
  --bg: #fdfdfd;
  --fg: #111;
  --muted: rgba(17, 17, 17, 0.68);
  --hairline: rgba(17, 17, 17, 0.12);

  /* Links (light) */
  --link: #3686db;          /* slate blue */
  --link-hover: #1f3e63;    /* deeper blue */
  --link-visited: #6b5c8a;  /* dusty violet */
  --link-underline: rgba(53, 95, 140, 0.35);

  --accent: #2a7ae2;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;

    --bg: #0b0d10;
    --fg: #e8e8ea;
    --muted: rgba(232, 232, 234, 0.72);
    --hairline: rgba(255, 255, 255, 0.14);

    /* Links (dark) */
    --link: #a6c2f0;
    --link-hover: #ffffff;
    --link-visited: #c0b2e8;
    --link-underline: rgba(166, 194, 240, 0.35);

    --accent: #8ab4f8;
  }
}

/* ===== Base ===== */
html { text-rendering: optimizeLegibility; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-size: 17px;
  line-height: 1.65;
}

/* Centered column */
.wrapper {
  max-width: 78ch;
  padding-left: 22px;
  padding-right: 22px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 1200px) {
  .wrapper { max-width: 82ch; }
}

/* Headings: subtle serif vibe without importing fonts */
h1, h2, h3, h4, h5, h6 {
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  font-weight: 520;
  letter-spacing: -0.01em;
  margin: 0 0 0.6rem 0;
}

/* Paragraph rhythm */
p {
  margin: 0 0 1.15em 0;
}

/* ===== Links (classy, understated) ===== */
a {
  color: var(--link);
  text-decoration-line: underline;
  text-decoration-color: var(--link-underline);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition:
    color 140ms ease,
    text-decoration-color 140ms ease,
    text-underline-offset 140ms ease,
    opacity 140ms ease;
}

a:hover {
  color: var(--link-hover);
  text-decoration-color: currentColor;
  text-underline-offset: 0.28em;
}

a:visited {
  color: var(--link-visited);
  opacity: 0.95;
}

/* Focus states that look intentional */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

/* ===== Header (clean, modern, predictable) ===== */
.site-header {
  border-bottom: 1px solid var(--hairline);
  padding: 0.75rem 0;

  /* fallback */
  background: transparent;
  /* nicer if supported */
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(6px);
}

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

.site-title {
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  font-weight: 600;
  font-size: 1.25rem;
  line-height: 1.2;
  letter-spacing: 0.05em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
}

/* Nav links are calmer than body links */
.site-nav .page-link {
  position: relative;
  font-size: 0.95rem;
  color: var(--muted);
  text-decoration: none;
}

.site-nav .page-link:hover {
  color: var(--fg);
}

/* tiny nav underline reveal */
.site-nav .page-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: currentColor;
  opacity: 0;
  transition: opacity 120ms ease;
}

.site-nav .page-link:hover::after {
  opacity: 0.6;
}

/* ===== Page layout ===== */
.page-content {
  padding: 1.25rem 0 2rem 0;
}

.page-header h1 {
  margin-bottom: 0.75rem;
}

/* ===== Posts ===== */
.post-title {
  font-size: clamp(2.0rem, 4vw, 2.6rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
}

.post-meta, .writing-meta {
  color: var(--muted);
}

/* Keep long reads comfortable */
.post-content {
  max-width: 74ch;
}

.post-content ul,
.post-content ol {
  margin: 0 0 1.15em 1.2rem;
  padding: 0;
}

.post-content li { margin: 0.25rem 0; }

.post-content img {
  border-radius: var(--radius);
  border: 1px solid var(--hairline);
}

/* ===== Code ===== */
pre, code {
  background: color-mix(in srgb, var(--bg) 86%, var(--fg) 14%);
  border: 1px solid var(--hairline);
  border-radius: 10px;
}

code { padding: 0.1em 0.35em; }
pre  { padding: 12px 14px; overflow-x: auto; }
pre code { padding: 0; border: 0; background: transparent; }

/* ===== Blockquotes ===== */
blockquote {
  color: var(--muted);
  border-left: 3px solid var(--hairline);
  padding-left: 14px;
  font-style: italic;
  letter-spacing: 0;
  margin: 0 0 1.15em 0;
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--hairline);
  color: var(--muted);
  padding: 1.5rem 0;
}

/* ===== Subtle background texture ===== */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 10%, rgba(0,0,0,.035), transparent 45%),
    radial-gradient(circle at 80% 30%, rgba(0,0,0,.028), transparent 50%),
    radial-gradient(circle at 30% 80%, rgba(0,0,0,.022), transparent 55%);
  opacity: .45;
}

@media (prefers-color-scheme: dark) {
  body::before {
    background:
      radial-gradient(circle at 20% 10%, rgba(255,255,255,.06), transparent 45%),
      radial-gradient(circle at 80% 30%, rgba(255,255,255,.05), transparent 50%),
      radial-gradient(circle at 30% 80%, rgba(255,255,255,.04), transparent 55%);
    opacity: .14;
  }
}

/* ===== Micro-motion (respect reduced motion) ===== */
@media (prefers-reduced-motion: no-preference) {
  .writing-item {
    transition: background-color 120ms ease;
  }
  .writing-item:hover {
    background: color-mix(in srgb, var(--bg) 92%, var(--fg) 8%);
  }
}