/* Hallmark · macrostructure: Type Specimen (adapted) · H1 hero knobs: size=display, alignment=left-bias, underlay=humans.txt terminal readout
 * theme: studied-DNA (source: https://www.usehallmark.com/examples/press-01/) · paper oklch(13% 0.014 25) · accent oklch(60% 0.21 25)
 * display: Bricolage Grotesque (variable) · body: Fraunces (variable) · outlier: JetBrains Mono
 * axes: dark / display-heavy / warm · studied: yes · context: user-specified (backend dev portfolio + blog)
 * genre: editorial · nav: N3 Side-rail · footer: Ft1 Mast-headed · enrichment: none (typography + hand-built terminal panel)
 * Hallmark · pre-emit critique: P5 H5 E5 S5 R4 V4
 * contrast: pass (40–41) · honest: pass (46) · chrome: pass (47) · tokens: pass (48)
 * responsive: pass (49) · mobile: pass (34, 49, 50–57)
 */

/* ── Reset / base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-xl);
}

body {
  overflow-x: clip;
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-optical-sizing: auto;
  font-weight: 360;
  font-size: var(--text-base);
  line-height: var(--lh-normal);
  font-variant-numeric: oldstyle-nums;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  padding-inline: max(0px, env(safe-area-inset-left));
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { list-style: none; padding: 0; }
a { color: inherit; text-decoration: none; }
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: var(--space-md);
  top: var(--space-md);
  z-index: var(--z-toast);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  padding: var(--space-sm) var(--space-md);
  transform: translateY(-150%);
  transition: transform var(--dur-short) var(--ease-out);
}
.skip-link:focus-visible { transform: translateY(0); }

/* ── Shell — offset for the fixed side-rail ───────────────── */
.shell {
  margin-inline-start: var(--rail-width);
}

.hero, .work, .blog, .about, .contact {
  padding-inline: var(--page-gutter);
}
.work, .blog, .about, .contact {
  padding-block: var(--section-gap);
}

/* every section that flips surface sets BOTH background and color (gate 41) */
.proof {
  background: var(--proof-paper);
  color: var(--proof-ink);
}

/* ════════════════════════════════════════════════════════════
   N3 · SIDE-RAIL NAV
   ════════════════════════════════════════════════════════════ */
.rail {
  position: fixed;
  inset-block: 0;
  inset-inline-start: 0;
  width: var(--rail-width);
  z-index: var(--z-sticky-nav);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-lg);
  background: var(--color-paper);
  border-inline-end: var(--rule-hair) solid var(--color-rule);
}

.rail__mark {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
}
.rail__name {
  font-family: var(--font-display);
  font-variation-settings: 'wght' 600, 'opsz' 18;
  font-size: var(--text-md);
  letter-spacing: 0.02em;
  color: var(--color-ink);
}
.rail__role {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-muted);
}
.rail__mark:hover .rail__name { color: var(--color-accent); }

.rail__dots {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}
.rail__dots a {
  position: relative;
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
}
.rail__dots a::before { content: ""; position: absolute; inset: -10px; }
.rail__dot {
  width: 7px;
  height: 7px;
  border: var(--rule-hair) solid var(--color-rule-2);
  background: transparent;
  transition: background-color var(--dur-short) var(--ease-out),
              border-color var(--dur-short) var(--ease-out),
              transform var(--dur-short) var(--ease-out);
}
@media (hover: hover) {
  .rail__dots a:hover .rail__dot { border-color: var(--color-accent); transform: scale(1.25); }
}
.rail__dots a:focus-visible { outline-offset: 4px; }
.rail__dots a.is-current .rail__dot {
  background: var(--color-accent);
  border-color: var(--color-accent);
}
.rail__dots a::after {
  content: attr(data-label);
  position: absolute;
  inset-inline-start: 140%;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink);
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
  padding: var(--space-2xs) var(--space-xs);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-short) var(--ease-out) 800ms;
}
.rail__dots a:hover::after { opacity: 1; }
.rail__dots a:focus-visible::after { opacity: 1; transition-delay: 0ms; }

.rail__year {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-micro);
  text-transform: uppercase;
  color: var(--color-muted);
}
.rail__year:hover { color: var(--color-ink-2); }

/* ════════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  display: grid;
  align-content: start;
  gap: var(--space-md);
  padding-block: var(--space-2xl) var(--space-3xl);
  max-width: var(--page-max);
  border-bottom: var(--rule-hair) solid var(--color-rule);
}

.hero__slug {
  max-width: 56ch;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--color-muted);
}
.hero__slug::before {
  content: "";
  display: inline-block;
  width: 2.5rem;
  height: var(--rule-fine);
  background: var(--color-accent);
  vertical-align: middle;
  margin-inline-end: var(--space-sm);
}

.hero__h {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-variation-settings: 'wght' 560, 'opsz' 96;
  font-size: var(--text-display);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-display);
  color: var(--color-ink);
  max-width: 18ch;
  overflow-wrap: anywhere;
  min-width: 0;
}
.hero__h span { display: block; }
.hero__h span:last-child { color: var(--color-accent); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  width: fit-content;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-ink);
  white-space: nowrap;
  padding-block: var(--space-2xs);
}
.link-arrow span:first-child {
  background-image: linear-gradient(var(--color-accent), var(--color-accent));
  background-size: 100% var(--rule-fine);
  background-position: 0 100%;
  background-repeat: no-repeat;
  padding-bottom: 3px;
}
.link-arrow__glyph { color: var(--color-accent); transition: transform var(--dur-short) var(--ease-out); }
@media (hover: hover) {
  .link-arrow:hover .link-arrow__glyph { transform: translateX(4px); }
}
.hero__cta { margin-block-start: var(--space-xs); }

/* ── humans.txt terminal readout — replaces the studied source's live specimen ── */
.terminal {
  margin-block-start: var(--space-xl);
  display: grid;
  gap: 0;
  max-width: 40rem;
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
  padding: var(--space-md) var(--space-lg);
}
.terminal__prompt {
  margin: 0 0 var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  color: var(--color-ink-2);
}
.terminal__sym { color: var(--color-accent); }
.terminal__prompt::after {
  content: "";
  display: inline-block;
  width: 0.55em;
  height: 1em;
  margin-inline-start: var(--space-2xs);
  vertical-align: -0.15em;
  background: var(--color-accent);
  animation: blink 1.1s steps(2, jump-none) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.terminal__code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-neutral);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.terminal__note {
  margin-block-start: var(--space-sm);
  padding-block-start: var(--space-sm);
  border-top: var(--rule-hair) solid var(--color-rule);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-muted);
}
.terminal__link {
  color: var(--color-ink-2);
  background-image: linear-gradient(var(--color-accent), var(--color-accent));
  background-size: 100% var(--rule-fine);
  background-position: 0 100%;
  background-repeat: no-repeat;
  padding-bottom: 2px;
}
@media (hover: hover) {
  .terminal__link:hover { color: var(--color-ink); }
}

/* ════════════════════════════════════════════════════════════
   PLATE HEAD — eyebrow stacked ABOVE heading, single column (gate 54)
   ════════════════════════════════════════════════════════════ */
.plate-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 64ch;
  margin-block-end: var(--space-2xl);
}
.plate-head__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--proof-accent);
}
.plate-head__title {
  font-family: var(--font-display);
  font-variation-settings: 'wght' 600, 'opsz' 72;
  font-size: var(--text-display-s);
  line-height: 1.05;
  letter-spacing: var(--tracking-tight);
  color: var(--proof-ink);
  overflow-wrap: anywhere;
  min-width: 0;
}
.plate-head__sub {
  max-width: var(--measure);
  font-size: var(--text-md);
  line-height: var(--lh-relaxed);
  color: var(--proof-ink-2);
}
.plate-head--ink .plate-head__no { color: var(--color-accent); }
.plate-head--ink .plate-head__title { color: var(--color-ink); }
.plate-head--ink .plate-head__sub { color: var(--color-neutral); }

/* ════════════════════════════════════════════════════════════
   LEDGER — numbered index, shared by Projects + Blog
   ════════════════════════════════════════════════════════════ */
.ledger {
  max-width: var(--page-max);
  border-top: var(--rule-hair) solid currentColor;
  border-top-color: var(--color-rule);
}
.proof .ledger { border-top-color: var(--proof-rule); }

.ledger__row {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr) minmax(0, 1.4fr);
  align-items: baseline;
  gap: var(--space-md) var(--space-lg);
  padding-block: var(--space-lg);
  border-bottom: var(--rule-hair) solid var(--color-rule);
  transition: background-color var(--dur-short) var(--ease-out);
}
.proof .ledger__row { border-bottom-color: var(--proof-rule); }
@media (hover: hover) {
  .ledger__row:has(.ledger__link):hover { background: var(--color-paper-2); }
  .proof .ledger__row:has(.ledger__link):hover { background: var(--proof-paper-2); }
  .ledger__row:hover .ledger__name { color: var(--color-accent); }
}
.ledger__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
}
.proof .ledger__num { color: var(--proof-muted); }
.ledger__name {
  font-family: var(--font-display);
  font-variation-settings: 'wght' 520, 'opsz' 28;
  font-size: var(--text-xl);
  line-height: 1.15;
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
  overflow-wrap: anywhere;
  min-width: 0;
  transition: color var(--dur-short) var(--ease-out);
}
.proof .ledger__name { color: var(--proof-ink); }
.ledger__link:focus-visible { outline-offset: 5px; }
.ledger__kind {
  font-size: var(--text-md);
  line-height: 1.5;
  color: var(--color-neutral);
}
.proof .ledger__kind { color: var(--proof-ink-2); }

/* ── Empty ledger state (e.g. blog with no posts yet) ── */
.ledger--empty {
  padding-block: var(--space-2xl);
}
.ledger__empty-word {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-variation-settings: 'wght' 640, 'opsz' 72;
  font-size: var(--text-display-s);
  line-height: 1;
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
  text-shadow:
    0.03em 0 0 var(--ghost-red),
    -0.03em 0.008em 0 var(--ghost-cyan);
}
.proof .ledger__empty-word { color: var(--proof-ink); text-shadow: none; }
.ledger__empty-word::before {
  content: "";
  display: inline-block;
  width: 2.5rem;
  height: var(--rule-fine);
  background: var(--color-accent);
  vertical-align: middle;
  margin-inline-end: var(--space-md);
}

/* ════════════════════════════════════════════════════════════
   ABOUT · stack spec sheet
   ════════════════════════════════════════════════════════════ */
.stack {
  margin-block-start: var(--space-2xl);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(13rem, 100%), 1fr));
  gap: 0;
  border: var(--rule-hair) solid var(--proof-rule);
  max-width: var(--page-max);
}
.stack__cell {
  padding: var(--space-lg);
  border-inline-start: var(--rule-hair) solid var(--proof-rule);
}
.stack__cell:first-child { border-inline-start: none; }
.stack dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--proof-accent);
  margin-block-end: var(--space-xs);
}
.stack dd {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--proof-ink-2);
}

/* ════════════════════════════════════════════════════════════
   CONTACT
   ════════════════════════════════════════════════════════════ */
.contact {
  border-top: var(--rule-hair) solid var(--color-rule);
}
.contact__h {
  font-family: var(--font-display);
  font-variation-settings: 'wght' 580, 'opsz' 96;
  font-size: var(--text-display-s);
  line-height: 1.02;
  letter-spacing: var(--tracking-display);
  color: var(--color-ink);
  max-width: 16ch;
  margin-block-end: var(--space-2xl);
  overflow-wrap: anywhere;
  min-width: 0;
}
.contact__lede {
  font-size: var(--text-lg);
  line-height: var(--lh-relaxed);
  color: var(--color-ink-2);
  max-width: var(--measure);
}
.contact__links {
  margin-block-start: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

/* ════════════════════════════════════════════════════════════
   Ft1 · MAST-HEADED FOOTER
   ════════════════════════════════════════════════════════════ */
.foot {
  background: var(--color-paper);
  color: var(--color-ink);
  border-top: var(--rule-heavy) solid var(--color-accent);
  padding: var(--space-2xl) var(--page-gutter) var(--space-3xl);
  display: grid;
  gap: var(--space-sm);
  max-width: var(--page-max);
}
.foot__mark {
  font-family: var(--font-display);
  font-variation-settings: 'wght' 640, 'opsz' 60, 'wdth' 90;
  font-size: clamp(2.5rem, 9vw, 5.5rem);
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--color-ink);
  overflow-wrap: anywhere;
  min-width: 0;
}
.foot__tag {
  max-width: 48ch;
  font-size: var(--text-md);
  line-height: var(--lh-relaxed);
  color: var(--color-neutral);
  margin-block-start: var(--space-xs);
}
.foot__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-block-start: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.foot__links a {
  color: var(--color-ink-2);
  white-space: nowrap;
  background-image: linear-gradient(var(--color-accent), var(--color-accent));
  background-size: 0% var(--rule-fine);
  background-position: 0 100%;
  background-repeat: no-repeat;
  padding-bottom: 2px;
  transition: background-size var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out);
}
@media (hover: hover) {
  .foot__links a:hover { color: var(--color-ink); background-size: 100% var(--rule-fine); }
}
.foot__sep { color: var(--color-rule-2); }

/* ════════════════════════════════════════════════════════════
   MOTION · one reveal primitive (fade-up stagger), reduced-motion safe
   ════════════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  animation: reveal var(--dur-reveal) var(--ease-out) forwards;
  animation-delay: calc(var(--i, 0) * 70ms);
}
@keyframes reveal { to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; animation: none; }
}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════ */
@media (max-width: 60rem) {
  .ledger__row { grid-template-columns: 3rem minmax(0, 1fr); }
  .ledger__kind { grid-column: 2; }
}

@media (max-width: 48rem) {
  .rail {
    inset-block: auto;
    inset-block-start: 0;
    inset-inline: 0;
    width: auto;
    height: 3rem;
    flex-direction: row;
    justify-content: space-between;
    padding: 0 var(--page-gutter);
    border-inline-end: none;
    border-bottom: var(--rule-hair) solid var(--color-rule);
  }
  .rail__mark { writing-mode: horizontal-tb; transform: none; gap: var(--space-sm); }
  .rail__name { font-size: var(--text-sm); }
  .rail__role { display: none; }
  .rail__dots { flex-direction: row; gap: var(--space-sm); }
  .rail__dots a::after { display: none; }
  .rail__year { writing-mode: horizontal-tb; }

  .shell { margin-inline-start: 0; padding-block-start: 3rem; }

  .hero { padding-block: var(--space-3xl) var(--space-3xl); }
}

@media (max-width: 30rem) {
  .hero__h { font-size: var(--text-3xl); }
  .rail__dots a { width: 1.25rem; }
}