/* ==================== TOKENS ==================== */
:root {
  --bg: #FCFCFA;
  --surface: #FFFFFF;
  --ink: #111110;
  --ink-soft: #3A3934;
  --muted: #6B6A65;
  --faint: #9A9890;
  --rule: #E5E4DF;
  --control-border: #8C8B84;
  --accent: #0B6B4A;
  --accent-strong: #084F37;

  --serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --shell: 1200px;
  --gutter: clamp(24px, 5vw, 120px);
  --section-gap: clamp(56px, 7vw, 88px);
  --label: 0.12em;
}

/* ==================== BASE ==================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0;
}

p {
  margin: 0;
  text-wrap: pretty;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-strong);
  text-decoration: underline;
  text-underline-offset: 3px;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.muted {
  color: var(--muted);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--bg);
  padding: 12px 20px;
  z-index: 100;
}

.skip-link:focus {
  left: 0;
}

/* ==================== HEADER ==================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.wordmark {
  font-family: var(--serif);
  font-size: clamp(19px, 2vw, 24px);
  color: var(--ink);
  white-space: nowrap;
}

.wordmark:hover {
  color: var(--ink);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 28px;
  font-size: 14px;
}

.site-nav a {
  color: var(--muted);
}

.site-nav a:hover,
.site-nav a[aria-current="true"] {
  color: var(--ink);
  text-decoration: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-toggle {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: transparent;
  border: 1px solid #C9C7C0;
  border-radius: 2px;
  padding: 8px 11px;
  cursor: pointer;
  min-height: 36px;
}

.lang-toggle:hover {
  border-color: var(--ink);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--ink);
  background: transparent;
  border: 0;
  cursor: pointer;
}

/* ==================== HERO ==================== */
.hero {
  padding: clamp(64px, 11vw, 128px) 0 clamp(56px, 9vw, 120px);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: clamp(22px, 3vw, 40px);
}

.hero-title {
  font-size: clamp(42px, 8vw, 116px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  max-width: 16ch;
  margin-bottom: clamp(26px, 3.5vw, 44px);
}

.lede {
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 60ch;
  margin-bottom: clamp(30px, 4vw, 48px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 14px 28px;
  border-radius: 2px;
  font-size: 15px;
  font-weight: 500;
}

.button:hover {
  text-decoration: none;
}

.button-primary {
  background: var(--accent);
  color: var(--surface);
}

.button-primary:hover {
  background: var(--accent-strong);
  color: var(--surface);
}

.button-quiet {
  color: var(--ink);
  border: 1px solid #C9C7C0;
}

.button-quiet:hover {
  color: var(--ink);
  border-color: var(--ink);
}

/* ==================== SECTIONS ==================== */
.section {
  padding: var(--section-gap) 0;
  border-top: 1px solid var(--rule);
}

.section-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 80px;
}

.section-number {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--faint);
}

.section-head h2 {
  font-size: clamp(32px, 3.5vw, 40px);
  margin-top: 12px;
}

.prose {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 68ch;
}

.prose p {
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ==================== ENTRIES ==================== */
.entry-list {
  display: flex;
  flex-direction: column;
}

.entry {
  padding: 36px 0;
  border-bottom: 1px solid var(--rule);
}

.entry:first-child {
  padding-top: 0;
}

.entry:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.entry-timeline {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 48px;
}

.entry h3 {
  font-size: clamp(25px, 2.6vw, 32px);
  letter-spacing: -0.01em;
}

.entry-body>p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 60ch;
}

.meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}

.entry-date {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.entry-role {
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
  margin: 6px 0 20px;
}

.entry-role-quiet {
  font-size: 15px;
  color: var(--ink-soft);
  margin-top: 4px;
}

.status {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: var(--label);
  text-transform: uppercase;
  color: var(--faint);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chips li {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 5px 10px;
}

.ext {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
}

.ext::after {
  content: "";
  width: 11px;
  height: 11px;
  background-color: currentColor;
  -webkit-mask: var(--arrow) center / contain no-repeat;
  mask: var(--arrow) center / contain no-repeat;
}

:root {
  --arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M3 9L9 3M9 3H4.5M9 3V7.5' fill='none' stroke='black' stroke-width='1.25' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

/* ==================== PROJECTS UNDER A ROLE ==================== */
.entry-projects {
  margin-top: 28px;
  padding-left: 20px;
  border-left: 1px solid var(--rule);
}

.projects-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: var(--label);
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 18px;
}

.project-list {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.project-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.project-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.project-head h4 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--accent);
  margin: 0;
}

.project-item>p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 58ch;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

/* ==================== SKILLS ==================== */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 44px 64px;
}

.skill-group h3 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: var(--label);
  text-transform: uppercase;
  color: var(--faint);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}

.skill-group p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-soft);
  margin-top: 12px;
}

/* ==================== CARD ==================== */
.card {
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 32px;
  max-width: 70ch;
}

.publication {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
}

.card-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: var(--label);
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 12px;
}

.card h3 {
  font-size: 26px;
  margin-bottom: 12px;
}

.card .muted {
  font-size: 15px;
  line-height: 1.7;
}

.publication .ext {
  white-space: nowrap;
}

/* ==================== CONTACT ==================== */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 250px;
  gap: 72px;
}

#contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  width: 100%;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.field label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.field input,
.field textarea {
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--control-border);
  border-radius: 2px;
  padding: 13px 14px;
  width: 100%;
  min-height: 48px;
}

.field textarea {
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--faint);
}

.field input:focus,
.field textarea:focus {
  border-color: var(--accent);
  outline: 1px solid var(--accent);
}

button.button {
  font-family: inherit;
  border: 0;
  cursor: pointer;
}

button.button:disabled {
  cursor: default;
  opacity: 0.75;
}

.form-status {
  font-size: 14px;
  color: var(--muted);
  min-height: 1.4em;
}

.form-status[data-state="error"] {
  color: #A1231C;
}

.form-status[data-state="ok"] {
  color: var(--accent);
}

/* Honeypot: reachable by scripted form fillers, invisible and unreachable for people.
   display:none would let smarter bots skip it, so it is moved out of view instead. */
.field-trap {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.form-consent {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 52ch;
  margin-top: 16px;
}

.form-consent a {
  white-space: nowrap;
}

.contact-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.contact-aside h3 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: var(--label);
  text-transform: uppercase;
  color: var(--faint);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
  width: 100%;
}

.contact-aside a {
  font-size: 15px;
  color: var(--ink);
}

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

/* ==================== FOOTER ==================== */
.site-footer {
  border-top: 1px solid var(--rule);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 40px;
  padding-bottom: 56px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
}

.footer-inner a {
  color: var(--faint);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

/* ==================== LEGAL PAGES ==================== */
.legal-hero {
  padding-bottom: clamp(36px, 6vw, 72px);
}

.legal-hero .hero-title {
  font-size: clamp(38px, 6vw, 76px);
}

.legal-hero .lede {
  margin-bottom: 24px;
}

.legal-updated {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: var(--label);
  text-transform: uppercase;
  color: var(--faint);
}

.legal-subhead {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--ink);
  margin-top: 10px;
}

.legal-subhead:first-child {
  margin-top: 0;
}

.legal-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.legal-list li {
  position: relative;
  padding-left: 22px;
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.7;
  color: var(--ink-soft);
}

.legal-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 10px;
  height: 1px;
  background: var(--control-border);
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

/* ==================== REVEAL ==================== */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 900px) {
  .section-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .entry-timeline {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

  .skill-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .publication {
    flex-direction: column;
    gap: 20px;
  }
}

@media (max-width: 720px) {
  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--rule);
    padding: 8px var(--gutter) 20px;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 14px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--rule);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }

  .field-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-actions .button {
    width: 100%;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}