/* ============================================================
   DESIGN TOKENS
   ============================================================ */

:root {
  /* Colors */
  --color-bg:      #FFFFFF;
  --color-text:    #111111;
  --color-accent:  #F4845F;
  --color-meta:    #888888;
  --color-surface: #F8F8F6;
  --color-rule:    #111111;

  /* Typography */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'Source Serif 4', Georgia, serif;
  --font-mono:    'IBM Plex Mono', 'Courier New', monospace;

  /* Type scale */
  --text-xs:   0.6875rem;  /* 11px */
  --text-sm:   0.8125rem;  /* 13px */
  --text-base: 1rem;       /* 16px */
  --text-md:   1.125rem;   /* 18px */
  --text-lg:   1.25rem;    /* 20px */
  --text-xl:   1.5rem;     /* 24px */
  --text-2xl:  2rem;       /* 32px */
  --text-3xl:  2.75rem;    /* 44px */
  --text-4xl:  3.5rem;     /* 56px */

  /* Spacing (8px base) */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --max-width:       720px;
  --max-width-wide:  960px;
  --content-padding: var(--space-6);

  /* Soft rule — list-level borders, distinct from structural 1px black */
  --color-rule-soft: rgba(17, 17, 17, 0.14);
}


/* ============================================================
   RESET
   ============================================================ */

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


/* ============================================================
   MOIRÉ BACKGROUND
   Two overlapping fine-line grids at slightly different scales
   (20px and 21px) produce an interference beat at ~420px.
   Each at 6% opacity; combined they're barely perceptible at
   reading distance but visible on close inspection.
   ============================================================ */

html {
  background-color: var(--color-bg);
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20'%3E%3Cpath d='M 20 0 L 0 0 0 20' fill='none' stroke='%23111111' stroke-width='0.5' stroke-opacity='0.06'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='21' height='21'%3E%3Cpath d='M 21 0 L 0 0 0 21' fill='none' stroke='%23111111' stroke-width='0.5' stroke-opacity='0.06'/%3E%3C/svg%3E");
  background-size: 20px 20px, 21px 21px;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.75;
  color: var(--color-text);
  background-color: transparent;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}


/* ============================================================
   LAYOUT
   ============================================================ */

.site-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-16) var(--content-padding) var(--space-24);
}


/* ============================================================
   NAVIGATION
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-rule);
  padding: var(--space-5) 0;
}

.site-header__inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--content-padding);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-8);
}

.site-name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 400;
  font-optical-sizing: auto;
  letter-spacing: 0.01em;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s ease;
}

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

.site-nav {
  display: flex;
  align-items: baseline;
  gap: var(--space-6);
  flex-shrink: 0;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-link:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.nav-link.is-active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}


/* ============================================================
   TYPOGRAPHY — HEADINGS
   ============================================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.15;
  color: var(--color-text);
  font-optical-sizing: auto;
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--text-4xl);
  letter-spacing: -0.025em;
}

h2 {
  font-size: var(--text-3xl);
  letter-spacing: -0.02em;
}

h3 {
  font-size: var(--text-2xl);
  font-weight: 400;
}

h4 {
  font-size: var(--text-xl);
  font-weight: 400;
}

h5 {
  font-size: var(--text-lg);
  font-weight: 400;
}

h6 {
  font-size: var(--text-md);
  font-weight: 400;
  font-style: italic;
}

/* No top margin when a heading immediately follows the page top */
.site-main > :first-child,
.site-main > :first-child h1,
.site-main > :first-child h2 {
  margin-top: 0;
}


/* ============================================================
   TYPOGRAPHY — BODY
   ============================================================ */

p {
  margin-bottom: var(--space-5);
  max-width: 65ch;
}

strong {
  font-weight: 600;
}

em {
  font-style: italic;
}

small {
  font-size: var(--text-sm);
}

a {
  color: var(--color-text);
  text-decoration-line: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}

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

hr {
  border: none;
  border-top: 1px solid var(--color-rule);
  margin: var(--space-10) 0;
}

blockquote {
  border-left: 2px solid var(--color-accent);
  padding-left: var(--space-6);
  margin: var(--space-6) 0;
  color: var(--color-meta);
  font-style: italic;
}

blockquote p {
  margin-bottom: var(--space-2);
}

ul, ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-5);
}

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

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


/* ============================================================
   TYPOGRAPHY — CODE
   ============================================================ */

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--color-surface);
  padding: 0.1em 0.35em;
}

pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  background-color: var(--color-surface);
  padding: var(--space-5) var(--space-6);
  overflow-x: auto;
  margin-bottom: var(--space-5);
  border-left: 2px solid var(--color-accent);
}

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


/* ============================================================
   METADATA UTILITIES
   Dates, tags, labels — monospace at small size
   ============================================================ */

.meta,
time {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-meta);
  letter-spacing: 0.05em;
}

.tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-meta);
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: lowercase;
}

.tag::before {
  content: '#';
}

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

/* Section label — mono small-caps style, used as h2 on home and as span in other layouts */
.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-meta);
  margin-top: 0;
  margin-bottom: var(--space-6);
  display: block;
}


/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  border-top: 1px solid var(--color-rule);
  padding: var(--space-8) 0 var(--space-12);
  margin-top: var(--space-16);
}

.site-footer__inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--content-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-meta);
  letter-spacing: 0.04em;
}

.footer-meta a {
  color: var(--color-meta);
  text-decoration: none;
}

.footer-meta a:hover {
  color: var(--color-accent);
}


/* ============================================================
   HOME PAGE
   ============================================================ */

.home-name {
  font-size: var(--text-4xl);
  font-weight: 300;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin-top: 0;
  margin-bottom: var(--space-3);
}

.home-descriptor {
  font-size: var(--text-md);
  font-style: italic;
  color: var(--color-meta);
  margin-bottom: 0;
  max-width: none;
}

.home-now p {
  font-size: var(--text-md);
  line-height: 1.7;
  max-width: 56ch;
  margin-bottom: var(--space-4);
}

.home-now p:last-child {
  margin-bottom: 0;
}

/* Writing list — index rows with soft ruled separation */
.writing-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-5);
}

.writing-list__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-6);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-rule-soft);
}

.writing-list__item:first-child {
  border-top: 1px solid var(--color-rule-soft);
}

.writing-list__title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  text-decoration: none;
  flex: 1;
  min-width: 0;
  transition: color 0.15s ease;
}

.writing-list__title:hover {
  color: var(--color-accent);
}

.writing-list__date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-meta);
  letter-spacing: 0.04em;
  flex-shrink: 0;
  white-space: nowrap;
}

.writing-list__empty {
  font-style: italic;
  color: var(--color-meta);
  margin-bottom: var(--space-5);
}

.home-more-link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-text);
  text-decoration: none;
  display: inline-block;
  margin-top: var(--space-3);
  transition: color 0.15s ease;
}

.home-more-link:hover {
  color: var(--color-accent);
}

/* Contact */
.contact-links {
  font-size: var(--text-base);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  max-width: none;
  margin-bottom: 0;
}

.contact-sep {
  color: var(--color-meta);
  user-select: none;
}


/* ============================================================
   WRITING INDEX
   ============================================================ */

/* The index variant adds a meta cluster (date + tag) on the right */
.writing-list--index .writing-list__meta {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Separator dot between date and tag */
.writing-list--index .writing-list__date::after {
  content: ' ·';
  color: var(--color-meta);
  margin-left: var(--space-2);
}

/* Hide the separator when there's no tag sibling */
.writing-list--index .writing-list__date:last-child::after {
  content: '';
}


/* ============================================================
   POST
   ============================================================ */

.post-header__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.post-date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-meta);
  letter-spacing: 0.05em;
}

.post-title {
  font-size: var(--text-4xl);
  font-weight: 300;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-top: 0;
  margin-bottom: 0;
}

.post-origin {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-meta);
  letter-spacing: 0.03em;
  margin-top: var(--space-3);
  margin-bottom: 0;
}

.post-rule {
  margin-top: var(--space-6);
  margin-bottom: var(--space-8);
}

.post-body p {
  font-size: var(--text-md);
  max-width: 60ch;
}

/* Pull first paragraph up slightly — feels like the text begins right after the rule */
.post-body > p:first-child {
  margin-top: 0;
}

.post-footer {
  margin-top: var(--space-12);
  border-top: 1px solid var(--color-rule);
  padding-top: var(--space-6);
}

.post-back {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.15s ease;
}

.post-back:hover {
  color: var(--color-accent);
}


/* ============================================================
   WORK PAGE
   ============================================================ */

/* Page header — h1 with optional right-side action link */
.page-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-6);
}

.page-header h1 {
  margin-top: 0;
  margin-bottom: 0;
}

.page-header__action {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-meta);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color 0.15s ease;
}

.page-header__action:hover {
  color: var(--color-accent);
}

/* CV entry */
.work-entry {
  margin-bottom: var(--space-10);
}

.work-entry--last {
  margin-bottom: 0;
}

.work-entry__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-3);
}

/* Override h3 display defaults — CV roles read as body text, not headlines */
.work-entry__role {
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.3;
  margin-top: 0;
  margin-bottom: 0;
  color: var(--color-text);
}

.work-entry__org {
  font-weight: 400;
}

.work-entry__period {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-meta);
  letter-spacing: 0.04em;
  flex-shrink: 0;
  white-space: nowrap;
}

.work-entry__desc {
  font-size: var(--text-base);
  max-width: 58ch;
  margin-bottom: 0;
}

/* Smaller italic note — explorations, context, prior roles within same org */
.work-entry__note {
  font-size: var(--text-sm);
  font-style: italic;
  color: var(--color-meta);
  max-width: 58ch;
  margin-top: var(--space-4);
  margin-bottom: 0;
}

/* Product sub-entries within a work entry */
.work-products {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-rule-soft);
  margin-bottom: var(--space-1);
}

.work-product {
  font-size: var(--text-sm);
  line-height: 1.55;
  max-width: 58ch;
  margin-bottom: var(--space-2);
}

.work-product:last-child {
  margin-bottom: 0;
}

.work-product__name {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.work-product__desc {
  color: var(--color-meta);
}


/* ============================================================
   ABOUT PAGE
   ============================================================ */

.about-contact {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-meta);
  letter-spacing: 0.04em;
  margin-top: var(--space-8);
  max-width: none;
}

.about-contact a {
  color: var(--color-meta);
  text-decoration-color: var(--color-accent);
}

.about-contact a:hover {
  color: var(--color-accent);
}


/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 640px) {
  :root {
    --content-padding: var(--space-4);
    --text-4xl: 2.25rem;
    --text-3xl: 1.875rem;
    --text-2xl: 1.5rem;
  }

  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .site-nav {
    gap: var(--space-5);
  }

  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .home-name {
    font-size: 2.25rem;
  }

  .writing-list__item {
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-4) 0;
  }

  .writing-list--index .writing-list__date::after {
    content: '';
  }

  .post-title {
    font-size: 2.25rem;
  }

  .contact-links {
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  .page-header {
    flex-direction: column;
    gap: var(--space-2);
  }

  .work-entry__header {
    flex-direction: column;
    gap: var(--space-1);
  }
}