/* Steve — portfolio
 * Built with Hallmark · macrostructure: Index-First · F4 sidebar-toc (sticky, numbered)
 * theme: Plain · accent: deep-ink-blue · enrichment: none (typography-led restraint)
 * Adapted from hallmark/site/_tests/06-anya-portfolio and extended for a multi-page
 * project index (homepage + one subpage per project).
 */

:root {
  --color-paper: oklch(100% 0 0);
  --color-paper-2: oklch(98% 0.005 240);
  --color-rule: oklch(88% 0.006 240);
  --color-ink: oklch(18% 0.012 245);
  --color-ink-soft: oklch(48% 0.014 245);
  --color-ink-muted: oklch(70% 0.014 245);
  --color-accent: oklch(36% 0.18 248);

  --font-display: "Inter Tight", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "Inter Tight", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;

  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4.5rem;
  --space-3xl: 6.5rem;

  --measure-prose: 62ch;

  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --dur-micro: 120ms;
}

* { box-sizing: border-box; }
html, body { overflow-x: clip; }

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.page {
  display: grid;
  grid-template-columns: 14rem 1fr;
  gap: var(--space-3xl);
  max-width: 76rem;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg) var(--space-3xl);
}

/* Sidebar TOC */
.toc {
  position: sticky;
  top: var(--space-2xl);
  align-self: start;
  height: fit-content;
}

.toc__brand {
  font-family: var(--font-display);
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink);
  margin: 0 0 var(--space-3xs);
  text-decoration: none;
  display: block;
}
a.toc__brand:hover { color: var(--color-accent); }

.toc__role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-xl);
  display: block;
}

.toc__list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-xl);
  display: grid;
  gap: var(--space-2xs);
  border-block-start: 1px solid var(--color-rule);
  padding-block-start: var(--space-md);
}

.toc__list a {
  display: grid;
  grid-template-columns: 3.25ch 1fr;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--color-ink-soft);
  text-decoration: none;
  padding: var(--space-3xs) 0;
  transition: color var(--dur-micro) var(--ease-out);
}

.toc__list a:hover, .toc__list a:focus-visible { color: var(--color-accent); }
.toc__list a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.toc__list .num { color: var(--color-accent); }

.toc__meta {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  border-block-start: 1px solid var(--color-rule);
  padding-block-start: var(--space-sm);
  display: grid;
  gap: var(--space-3xs);
}

/* Main content column */
.main { min-width: 0; max-width: 56rem; }

.section {
  margin-block-end: var(--space-3xl);
  scroll-margin-top: var(--space-2xl);
}

.section:first-of-type { margin-block-start: 0; }

.section__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 var(--space-md);
}

.section__head {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0 0 var(--space-lg);
  color: var(--color-ink);
}

.section__head--lede { font-size: clamp(2.5rem, 5vw, 4rem); }

.section__body {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-ink);
  max-width: var(--measure-prose);
}

.section__body p { margin: 0 0 var(--space-md); }
.section__body p:last-child { margin-block-end: 0; }
.section__body strong { color: var(--color-accent); font-weight: 500; }

/* Project index — one row per project, links to a subpage */
.projects {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0;
}

.projects li {
  border-block-start: 1px solid var(--color-rule);
}
.projects li:last-child { border-block-end: 1px solid var(--color-rule); }

.project {
  display: grid;
  grid-template-columns: 3.25ch 1fr;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-2xs);
  text-decoration: none;
  color: var(--color-ink);
  transition: background var(--dur-micro) var(--ease-out);
}
.project:hover, .project:focus-visible { background: var(--color-paper-2); }
.project:focus-visible { outline: 2px solid var(--color-accent); outline-offset: -2px; }

.project__num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-accent);
  padding-block-start: 0.35rem;
}

.project__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-3xs);
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}
.project__title .arrow {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-ink-muted);
  transition: transform var(--dur-micro) var(--ease-out), color var(--dur-micro) var(--ease-out);
}
.project:hover .project__title .arrow { transform: translateX(4px); color: var(--color-accent); }

.project__desc {
  font-size: 1rem;
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-sm);
  max-width: 54ch;
  line-height: 1.55;
}

.tags {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
}
.tags li {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  border: 1px solid var(--color-rule);
  border-radius: 2px;
  padding: 0.15rem 0.5rem;
}

/* Interests grid */
.interests {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-sm) var(--space-lg);
  font-size: 1rem;
  max-width: none;
}
.interests li {
  display: grid;
  grid-template-columns: 3ch 1fr;
  gap: var(--space-sm);
  align-items: baseline;
  color: var(--color-ink);
  padding-block: var(--space-2xs);
  border-block-end: 1px solid var(--color-rule);
}
.interests .num { font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-accent); }

/* Contact */
.contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  max-width: none;
}
.contact__row {
  border: 1px solid var(--color-rule);
  padding: var(--space-md);
  display: grid;
  gap: var(--space-2xs);
}
.contact__label { color: var(--color-ink-soft); font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; }
.contact__value a { color: var(--color-ink); text-decoration: none; transition: color var(--dur-micro) var(--ease-out); }
.contact__value a:hover, .contact__value a:focus-visible { color: var(--color-accent); }
.contact__value a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

/* ---- Subpage (project detail) specifics ---- */

.back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--color-ink-soft);
  text-decoration: none;
  margin-block-end: var(--space-xl);
  transition: color var(--dur-micro) var(--ease-out);
}
.back:hover, .back:focus-visible { color: var(--color-accent); }

.lede {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-md);
}
.tagline {
  font-size: 1.25rem;
  color: var(--color-ink-soft);
  line-height: 1.4;
  margin: 0 0 var(--space-lg);
  max-width: var(--measure-prose);
}

/* key/value spec table used on subpages */
.spec {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.spec th, .spec td {
  text-align: start;
  padding: var(--space-sm) var(--space-md) var(--space-sm) 0;
  border-block-end: 1px solid var(--color-rule);
  vertical-align: baseline;
}
.spec th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  font-weight: 400;
  width: 14ch;
}
.spec td { color: var(--color-ink); }
.spec code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: 2px;
  padding: 0.05rem 0.35rem;
}

/* feature list on subpages */
.features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-lg);
  max-width: var(--measure-prose);
}
.features li { display: grid; gap: var(--space-2xs); }
.features h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}
.features p { margin: 0; color: var(--color-ink-soft); font-size: 1rem; line-height: 1.55; }

.pipe {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-ink-soft);
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: 3px;
  padding: var(--space-md);
  overflow-x: auto;
  white-space: pre;
  margin: 0 0 var(--space-lg);
}

@media (max-width: 64rem) {
  .page { grid-template-columns: 1fr; gap: var(--space-2xl); }
  .toc { position: static; border-block-end: 1px solid var(--color-rule); padding-block-end: var(--space-lg); }
}

@media (max-width: 40rem) {
  .page { padding: var(--space-xl) var(--space-md) var(--space-2xl); }
  .project { grid-template-columns: 1fr; gap: var(--space-2xs); }
  .project__num { padding-block-start: 0; }
  .spec th { width: auto; }
}