/* ============================================================
   Custom Properties
   ============================================================ */

:root {
  /* --- Color --- */
  --color-bg:         #faf8f5;
  --color-text:       #1a1814;
  --color-text-muted: #6b6560;
  --color-accent:     #8b5d3c;
  --color-border:     #e8e4df;
  --color-code-bg:    #f0ede8;

  /* --- Typography: Stacks --- */
  --font-body:  -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  --font-mono:  ui-monospace, 'SFMono-Regular', Menlo, monospace;

  /* --- Typography: Size Scale --- */
  --text-xs:   13px;
  --text-sm:   15px;
  --text-base: 18px;
  --text-lg:   22px;
  --text-xl:   28px;
  --text-2xl:  36px;

  /* --- Typography: Line Height --- */
  --leading-body:    1.7;
  --leading-heading: 1.3;

  /* --- Typography: Weights --- */
  --weight-normal: 400;
  --weight-medium: 500;

  /* --- Typography: Measure --- */
  --measure: 65ch;

  /* --- Layout --- */
  --content-max-width: 680px;
  --page-padding:      1.5rem;

  /* --- Spacing Scale --- */
  --space-1:  4px;
  --space-2:  8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --space-6: 64px;
  --space-7: 96px;
}

/* ============================================================
   Reset
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ============================================================
   Base
   ============================================================ */

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  font-weight: var(--weight-normal);
  -webkit-font-smoothing: antialiased;
  border-top: 3px solid var(--color-accent);
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  transition: opacity 150ms ease;
}

a:hover {
  opacity: 0.7;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--weight-medium);
  line-height: var(--leading-heading);
}

h1 { font-size: var(--text-2xl); font-family: var(--font-serif); }
h2 { font-size: var(--text-xl);  font-family: var(--font-serif); }
h3 { font-size: var(--text-lg);  font-family: var(--font-serif); }

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

/* ============================================================
   Layout
   ============================================================ */

.site-wrapper {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

.site-main {
  padding-bottom: var(--space-7);
}

/* ============================================================
   Nav
   ============================================================ */

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}

.site-nav__name {
  font-size: var(--text-base);
  font-family: var(--font-serif);
  font-weight: var(--weight-medium);
  text-decoration: none;
}

.site-nav__name:hover {
  opacity: 0.7;
}

.site-nav__links {
  display: flex;
  gap: var(--space-4);
}

.site-nav__link {
  text-decoration: none;
  color: var(--color-text);
  font-weight: var(--weight-normal);
}

.site-nav__link--active {
  color: var(--color-accent);
  font-weight: var(--weight-medium);
}

/* ============================================================
   Post List
   ============================================================ */

.post-list {
  list-style: none;
}

.post-list__item {
  display: flex;
  flex-direction: column;
}

.post-list__item + .post-list__item {
  margin-top: var(--space-5);
}

.post-list__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.post-list__date {
  font-size: var(--text-xs);
  text-transform: uppercase;
  color: var(--color-text-muted);
  white-space: nowrap;
  margin-left: var(--space-4);
}

.post-list__title {
  font-size: var(--text-base);
  font-family: var(--font-serif);
  font-weight: var(--weight-medium);
  line-height: var(--leading-heading);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  color: var(--color-accent);
  transition: opacity 150ms ease, border-color 150ms ease;
}

.post-list__title:hover {
  border-bottom-color: var(--color-accent);
  opacity: 0.7;
}

.post-list__description {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ============================================================
   Home Page
   ============================================================ */

.home-hero {
  padding-top: var(--space-7);
  padding-bottom: 0;
  text-align: left;
}

.home-hero__top {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  margin-bottom: 0;
}

@media (max-width: 600px) {
  .home-hero__top {
    flex-direction: row;
    align-items: center;
    gap: var(--space-3);
  }

  .home-hero__photo {
    width: 56px;
    height: 56px;
  }
}

.home-hero__photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  flex-shrink: 0;
}

.home-hero__title {
  font-size: var(--text-2xl);
  font-family: var(--font-serif);
  font-weight: var(--weight-medium);
  line-height: var(--leading-heading);
}

.home-hero__tagline {
  font-size: var(--text-sm);
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.home-hero__bio {
  max-width: none;
  margin-top: 12px;
}

.home-hero__areas {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: 12px;
}

.home-section {
  margin-top: 0;
}

.home-section__label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: var(--space-7);
  margin-bottom: var(--space-4);
}

/* ============================================================
   Writing Page
   ============================================================ */

.writing-header {
  padding-top: var(--space-7);
  padding-bottom: var(--space-5);
}

.writing-header__title {
  font-size: var(--text-2xl);
  font-family: var(--font-serif);
  font-weight: var(--weight-medium);
  line-height: var(--leading-heading);
}

/* ============================================================
   Post Page
   ============================================================ */

.post__back {
  display: inline-block;
  font-size: var(--text-sm);
  color: var(--color-accent);
  text-decoration: none;
  margin-top: var(--space-4);
  margin-bottom: var(--space-5);
}

.post__back:hover {
  opacity: 0.7;
}

.post__header {
  margin-bottom: var(--space-4);
}

.post__kicker {
  font-size: var(--text-xs);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.post__title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-medium);
  line-height: var(--leading-heading);
  max-width: 520px;
}

.post__byline {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 12px;
}

.post__divider {
  margin-bottom: var(--space-5);
}

.post__body {
  max-width: var(--measure);
}

.post__body p {
  margin-bottom: 20px;
}

.post__body h2 {
  margin-top: var(--space-5);
  margin-bottom: var(--space-3);
}

.post__body h3 {
  margin-top: 32px;
  margin-bottom: 12px;
}

.post__body ul,
.post__body ol {
  padding-left: 1.5em;
  margin-bottom: 20px;
}

.post__body li {
  margin-bottom: var(--space-2);
}

.post__body blockquote {
  border-left: 2px solid var(--color-accent);
  padding-left: var(--space-4);
  margin: 28px 0;
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-text);
}

.post__body code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background-color: var(--color-code-bg);
  padding: 2px 5px;
}

.post__body pre {
  background-color: var(--color-code-bg);
  padding: var(--space-3);
  overflow-x: auto;
  margin-bottom: 20px;
}

.post__body pre code {
  background: none;
  padding: 0;
  font-size: var(--text-sm);
}

.post__body img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 28px 0;
}

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.site-footer__name {
  color: var(--color-text-muted);
}

.site-footer__links {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.site-footer__link {
  color: var(--color-text-muted);
}

.site-footer__sep {
  color: var(--color-text-muted);
  user-select: none;
}