@font-face {
  font-family: 'Fraunces';
  src: local('Fraunces');
}

:root {
  /* color */
  --ink: #14181C;
  --ink-soft: #2A3138;
  --stone: #EEEDE6;
  --stone-dim: #E3E1D6;
  --stone-line: rgba(20, 24, 28, 0.14);
  --brass: #A9824C;
  --brass-soft: #C9A876;
  --pine: #21433B;
  --pine-soft: #3C6459;

  --bg: var(--stone);
  --bg-panel: var(--stone-dim);
  --fg: var(--ink);
  --fg-muted: #52585D;
  --line: var(--stone-line);
  --accent: var(--brass);
  --accent-contrast: #FBFAF6;

  --font-display: 'Fraunces', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --measure: 66ch;
  --gutter: clamp(1.5rem, 4vw, 4rem);
  --section-gap: clamp(4rem, 10vw, 8rem);

  color-scheme: light;
}

html.dark {
  --bg: var(--ink);
  --bg-panel: #1B2126;
  --fg: var(--stone);
  --fg-muted: #9BA3A9;
  --line: rgba(238, 237, 230, 0.14);
  --accent: var(--brass-soft);
  --accent-contrast: #14181C;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

html.preload body { opacity: 0; }
body {
  transition: opacity 0.6s ease;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
    scroll-behavior: auto !important;
  }
  body.js-anim .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
  html.preload body { opacity: 1 !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  transition: background 0.3s ease, color 0.3s ease, opacity 0.6s ease;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

img { max-width: 100%; display: block; }

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

::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--line);
  border: 3px solid var(--bg);
  border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover { background: var(--fg-muted); }
::-webkit-scrollbar-button,
::-webkit-scrollbar-button:start:decrement,
::-webkit-scrollbar-button:end:increment,
::-webkit-scrollbar-button:vertical:start,
::-webkit-scrollbar-button:vertical:end,
::-webkit-scrollbar-button:horizontal:start,
::-webkit-scrollbar-button:horizontal:end {
  display: none !important;
  width: 0 !important;
  height: 0 !important;
}
::-webkit-scrollbar-corner { background: var(--bg); }
html { scrollbar-width: thin; scrollbar-color: var(--line) var(--bg); }

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-mark {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  position: relative;
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--fg-muted);
  padding: 0.35rem 0;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--fg);
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.theme-toggle,
.nav-toggle {
  position: relative;
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  cursor: pointer;
  color: var(--fg);
  transition: border-color 0.2s ease;
}

.theme-toggle { margin-left: clamp(0.75rem, 2vw, 1.5rem); }
.nav-toggle { display: none; margin-left: 0.6rem; }

.theme-toggle:hover,
.nav-toggle:hover { border-color: var(--accent); }

.theme-toggle svg { width: 16px; height: 16px; }

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 15px;
  height: 1.4px;
  background: var(--fg);
  position: relative;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before {
  background: var(--fg);
  transform: translateY(5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span::after {
  background: var(--fg);
  transform: translateY(-5px) rotate(-45deg);
}

.hero {
  padding-top: clamp(3.5rem, 10vw, 7rem);
  padding-bottom: clamp(3rem, 8vw, 5rem);
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--fg-muted);
  margin: 0 0 1.25rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.6rem, 6.5vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0 0 1.5rem;
  max-width: 21ch;
}

.hero-lede {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--fg-muted);
  max-width: 44ch;
  margin: 0 0 2.25rem;
}

.hero-experience {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--fg);
  border-left: 2px solid var(--accent);
  background: var(--bg-panel);
  padding: 0.6rem 1rem;
  margin: 0 0 1.5rem;
}

.hero-experience time {
  color: var(--accent);
  font-weight: 600;
  font-style: normal;
}

.exp-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}

.status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  width: fit-content;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.status-row div {
  padding: 0.65rem 1.1rem;
  border-right: 1px solid var(--line);
  white-space: nowrap;
  transition: background-color 0.2s ease;
}
.status-row div:last-child { border-right: none; }
.status-row div:hover { background: var(--bg-panel); }

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--pine);
  margin-right: 0.5em;
}
html.dark .status-dot { background: #5FAF97; }

.live-tag { color: var(--pine); font-weight: 500; }
html.dark .live-tag { color: #5FAF97; }

section {
  padding-top: var(--section-gap);
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.9rem;
  margin-bottom: 2.5rem;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
}

.section-head h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin: 0;
}

.section-note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-muted);
  align-self: flex-end;
}

.lede {
  max-width: var(--measure);
  color: var(--fg-muted);
  font-size: 1.02rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.about-copy p {
  max-width: var(--measure);
  margin: 0 0 1.1rem;
}

.fact-list {
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.fact-list dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.7rem 1.5rem;
  margin: 0;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

.fact-list dt { color: var(--fg-muted); }
.fact-list dd { margin: 0; }

.fact-list a {
  position: relative;
  text-decoration: none;
  padding-bottom: 1px;
}
.fact-list a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.fact-list a:hover { color: var(--accent); }
.fact-list a:hover::after { transform: scaleX(1); transform-origin: left; }

.approach-switch { display: block; }

.approach-tabs {
  position: relative;
  display: inline-flex;
  width: fit-content;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 2rem;
}

.approach-thumb {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--fg);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, width;
}

.approach-tab {
  position: relative;
  z-index: 1;
  background: none;
  border: none;
  padding: 0.65rem 1.2rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--fg-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.approach-tab:hover { color: var(--fg); }
.approach-tab[aria-selected="true"] { color: var(--bg); }

.approach-panes {
  border: 1px solid var(--line);
  background: var(--bg);
}

.approach-panes .arch-panel { max-width: 640px; }
.approach-panes .arch-diagram { max-width: 420px; }

.arch-panel {
  background: var(--bg);
  padding: 2rem clamp(1.25rem, 2vw, 1.75rem);
}

.arch-panel h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.2rem;
  margin: 1.25rem 0 0.6rem;
}

.arch-panel p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  margin: 0 0 1rem;
}

.arch-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.arch-diagram {
  width: 100%;
  height: auto;
  display: block;
}

.arch-diagram rect {
  fill: none;
  stroke: var(--fg);
  stroke-opacity: 0.55;
}

.arch-diagram .filled {
  fill: var(--fg);
  fill-opacity: 0.06;
  stroke-opacity: 0.55;
}

.arch-diagram .accent {
  stroke: var(--accent);
  stroke-opacity: 1;
}

.arch-diagram line, .arch-diagram path.connector {
  stroke: var(--fg);
  stroke-opacity: 0.4;
  fill: none;
}

.arch-diagram text {
  font-family: var(--font-mono);
  fill: var(--fg-muted);
  font-size: 6px;
}

.work-list { border-top: 1px solid var(--line); }

.work-entry { border-bottom: 1px solid var(--line); }

.work-head {
  display: flex;
  align-items: stretch;
}

.work-toggle {
  flex: 1;
  min-width: 0;
  display: grid;
  grid-template-columns: 9rem 1fr auto;
  gap: 1.75rem;
  align-items: center;
  padding: 2rem 0;
  background: none;
  border: none;
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.work-toggle:hover { background: var(--bg-panel); }

.work-visit {
  position: relative;
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  align-self: center;
  margin-left: 1.5rem;
  padding-bottom: 2px;
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
}
.work-visit::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.work-visit:hover { color: var(--accent); }
.work-visit:hover::after { transform: scaleX(1); transform-origin: left; }
.work-visit .arrow {
  display: inline-block;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.work-visit:hover .arrow { transform: translate(3px, -3px); }

.work-toggle .work-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-muted);
  padding-top: 0.35rem;
}

.work-toggle h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.35rem;
  margin: 0;
  transition: color 0.2s ease;
}

.work-toggle:hover h3,
.work-entry.is-open .work-toggle h3 { color: var(--accent); }

.work-arrow {
  width: 8px;
  height: 8px;
  margin: 0.65rem 0.4rem 0 auto;
  border-right: 1.5px solid var(--fg-muted);
  border-bottom: 1.5px solid var(--fg-muted);
  transform: rotate(45deg);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease;
}
.work-toggle:hover .work-arrow { border-color: var(--fg); }
.work-entry.is-open .work-arrow { transform: rotate(-135deg); border-color: var(--accent); }

.work-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.work-entry.is-open .work-panel { grid-template-rows: 1fr; }

.work-panel-inner {
  overflow: hidden;
  padding: 0 0 0 calc(9rem + 1.75rem);
}
.work-entry.is-open .work-panel-inner { padding-bottom: 2rem; }

.work-panel-inner p {
  margin: 0 0 0.9rem;
  color: var(--fg-muted);
  max-width: 56ch;
}

.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.stack-tags li {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.2rem 0.5rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.25rem 3rem;
}

.skill-group {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.skill-group h4 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-muted);
  font-weight: 400;
  margin: 0 0 0.9rem;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tag-cloud li {
  font-size: 0.9rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 3px;
}

.contact {
  padding-bottom: var(--section-gap);
}

.contact-inner {
  border: 1px solid var(--line);
  padding: clamp(2rem, 5vw, 3.5rem);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2rem;
  align-items: center;
}

.contact h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  margin: 0 0 0.75rem;
  max-width: 14ch;
}

.contact p {
  color: var(--fg-muted);
  max-width: 42ch;
  margin: 0;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: flex-start;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  text-decoration: none;
  padding: 0.75rem 1.4rem;
  border: 1px solid var(--fg);
  border-radius: 3px;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: var(--fg);
  color: var(--bg);
}
.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.btn-ghost {
  border-color: var(--line);
  color: var(--fg);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

footer {
  border-top: 1px solid var(--line);
  padding: 1.75rem 0 2.5rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-muted);
}

.footer-row a {
  position: relative;
  text-decoration: none;
  padding-bottom: 1px;
}
.footer-row a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.footer-row a:hover { color: var(--accent); }
.footer-row a:hover::after { transform: scaleX(1); transform-origin: left; }

.footer-socials {
  display: flex;
  gap: 1.2rem;
}

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

body.js-anim .reveal {
  opacity: 0;
  transform: translateY(16px) scale(0.985);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}

body.js-anim .reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.d0 { --reveal-delay: 0s; }
.d1 { --reveal-delay: 0.09s; }
.d2 { --reveal-delay: 0.18s; }
.d3 { --reveal-delay: 0.27s; }
.d4 { --reveal-delay: 0.36s; }
.d5 { --reveal-delay: 0.45s; }
.d5 { --reveal-delay: 0.54s; }

.site-nav {
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

.site-nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  border-bottom-color: var(--line);
}


.theme-toggle svg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(0deg);
  transition: opacity 0.45s ease, transform 0.45s ease;
  opacity: 1;
}

.theme-toggle #iconMoon {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(-70deg);
}

.theme-toggle.is-dark #iconSun {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(70deg);
}

.theme-toggle.is-dark #iconMoon {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(0deg);
}

.status-dot, .exp-dot {
  animation: dot-breathe 2.8s ease-in-out infinite;
}

@keyframes dot-breathe {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

.arch-diagram path.connector {
  transition: stroke-dashoffset 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn {
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}
.btn:active { transform: scale(0.96); }

.tag-cloud li,
.stack-tags li {
  transition: transform 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.tag-cloud li:hover,
.stack-tags li:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.nav-mark { transition: opacity 0.2s ease; }
.nav-mark:hover { opacity: 0.7; }

@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .hero-experience { flex-wrap: wrap; row-gap: 0.3rem; }

  .status-row {
    flex-direction: column;
    width: 100%;
    border-radius: 6px;
  }
  .status-row div {
    border-right: none;
    border-bottom: 1px solid var(--line);
    white-space: normal;
  }
  .status-row div:last-child { border-bottom: none; }

  .work-head { flex-direction: column; align-items: stretch; }
  .work-toggle { grid-template-columns: 1fr auto; grid-template-areas: "meta arrow" "title title"; row-gap: 0.5rem; padding-bottom: 1rem; }
  .work-toggle .work-meta { grid-area: meta; padding-top: 0; }
  .work-toggle h3 { grid-area: title; }
  .work-arrow { grid-area: arrow; margin-top: 0.2rem; }
  .work-visit { margin: 0 0 1.25rem; align-self: flex-start; }
  .work-panel-inner { padding-left: 0; }
  .contact-inner { grid-template-columns: 1fr; text-align: left; }
  .contact-actions { align-items: flex-start; }
}

@media (max-width: 700px) {
  .nav-links { display: none; }
  .nav-toggle { display: grid; }
  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    z-index: 60;
    isolation: isolate;
    transform: translateZ(0);
    background: var(--bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    padding: 1rem var(--gutter) 1.5rem;
    gap: 1rem;
  }
  .approach-tabs { display: flex; width: 100%; }
  .approach-tab { flex: 1; text-align: center; }
}