:root {
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Sora", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
  --max: 860px;
}

/* ── Palettes ───────────────────────────────────────────────
   Every colour in the sheet resolves to one of these tokens,
   so a theme is a single block. Default: cool ink.
   ─────────────────────────────────────────────────────────── */

:root {
  --bg: #0b0e14;
  --grad-1: #131926;
  --grad-2: #0b0e14;
  --grad-3: #07090f;
  --header-bg: rgba(11, 14, 20, 0.75);
  --ink: #e9edf6;
  --ink-dim: #c3cad9;
  --muted: #868fa1;
  --heading: #eef1f8;
  --body-text: #c5ccd9;
  --strong-text: #dde2ec;
  --accent: #7c9cff;
  --accent-hover: #99b2ff;
  --accent-ink: #0a1022;
  --accent-soft: rgba(124, 156, 255, 0.14);
  --accent-border: rgba(124, 156, 255, 0.35);
  --accent-border-strong: rgba(124, 156, 255, 0.5);
  --ok: #5ec98a;
  --ok-soft: rgba(94, 201, 138, 0.09);
  --ok-border: rgba(94, 201, 138, 0.3);
  --ok-ring: rgba(94, 201, 138, 0.45);
  --diff-add: #7fc99b;
  --diff-add-bg: rgba(127, 201, 155, 0.1);
  --diff-del: #e2796f;
  --diff-del-bg: rgba(226, 121, 111, 0.1);
  --line: rgba(233, 237, 246, 0.09);
  --surface-1: rgba(233, 237, 246, 0.022);
  --surface-2: rgba(233, 237, 246, 0.03);
  --surface-3: rgba(233, 237, 246, 0.038);
  --surface-hover: rgba(233, 237, 246, 0.05);
  --code-bg: #080b11;
  --glow-a: rgba(124, 156, 255, 0.16);
  --glow-b: rgba(168, 130, 255, 0.1);
  --grain-opacity: 0.28;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent-soft);
  color: var(--ink);
}

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

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: linear-gradient(165deg, var(--grad-1) 0%, var(--grad-2) 45%, var(--grad-3) 100%);
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  animation: drift 20s ease-in-out infinite alternate;
}

.glow-a {
  width: 55vw;
  height: 55vw;
  max-width: 640px;
  max-height: 640px;
  top: -12%;
  left: -8%;
  background: var(--glow-a);
}

.glow-b {
  width: 45vw;
  height: 45vw;
  max-width: 520px;
  max-height: 520px;
  top: 18%;
  right: -12%;
  background: var(--glow-b);
  animation-delay: -6s;
  animation-duration: 24s;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  pointer-events: none;
  mix-blend-mode: overlay;
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(3%, 4%, 0) scale(1.08);
  }
}

a {
  color: inherit;
  text-underline-offset: 0.18em;
}

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

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 20;
  padding: 0.6rem 0.95rem;
  border-radius: 4px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

.skip-link:focus-visible {
  transform: translateY(0);
  color: var(--accent-ink);
}

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.top.is-stuck {
  border-bottom-color: var(--line);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.9rem 1.35rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.85rem;
  height: 1.85rem;
  flex-shrink: 0;
  border: 1px solid var(--accent-border-strong);
  border-radius: 5px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

nav {
  display: flex;
  gap: 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted);
}

nav a {
  position: relative;
  padding-bottom: 0.2rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease;
}

nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

nav a:hover {
  color: var(--ink);
}

nav a.is-active {
  color: var(--ink);
}

nav a.is-active::after {
  transform: scaleX(1);
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.35rem 3.5rem;
}

.mono-tag {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--accent);
}

.hero {
  padding: 9vh 0 4rem;
  min-height: 76vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  scroll-margin-top: 5rem;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  align-self: flex-start;
  margin: 0 0 1.1rem;
  padding: 0.35rem 0.75rem 0.35rem 0.6rem;
  border: 1px solid var(--ok-border);
  border-radius: 999px;
  background: var(--ok-soft);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink-dim);
}

.status-dot,
.live-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--diff-add);
  box-shadow: 0 0 0 0 var(--ok-ring);
  animation: ping 2.4s ease-out infinite;
}

.live-dot {
  display: inline-block;
  margin-right: 0.4rem;
  vertical-align: 0.05em;
}

@keyframes ping {
  0% {
    box-shadow: 0 0 0 0 var(--ok-ring);
  }
  70% {
    box-shadow: 0 0 0 0.4rem transparent;
  }
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
}

.role {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 1.15rem;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.6vw, 2.15rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--heading);
}

.lede {
  margin: 0 0 2rem;
  max-width: 44ch;
  color: var(--muted);
  font-size: 1rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.2rem;
  border-radius: 3px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease,
    border-color 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
  color: inherit;
}

.btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn.primary:hover {
  background: var(--accent-hover);
  color: var(--accent-ink);
}

.btn.ghost {
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--ink);
}

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

.ledger {
  margin: 0;
  padding: 1.1rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface-1);
  max-width: 46rem;
}

.ledger-row {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 0.5rem 1rem;
  padding: 0.5rem 0;
  font-size: 0.86rem;
}

.ledger-row + .ledger-row {
  border-top: 1px dashed var(--line);
}

.ledger dt {
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 0.78rem;
}

.ledger dd {
  margin: 0;
  color: var(--ink-dim);
}

.diff-add {
  color: var(--diff-add);
  font-weight: 600;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: rise 0.85s ease forwards;
}

.delay-1 {
  animation-delay: 0.08s;
}
.delay-2 {
  animation-delay: 0.16s;
}
.delay-3 {
  animation-delay: 0.24s;
}
.delay-4 {
  animation-delay: 0.32s;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.section {
  padding: 3.75rem 0 0;
  border-top: 1px solid var(--line);
  margin-top: 0.5rem;
  scroll-margin-top: 4.5rem;
}

.section-head {
  margin-bottom: 2rem;
}

.section-head h2 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.section-head p:not(.mono-tag) {
  margin: 0;
  max-width: 42ch;
  color: var(--muted);
  font-size: 0.95rem;
}

.project {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.25fr);
  gap: 1.5rem 2rem;
  padding: 2.25rem 0;
  border-top: 1px solid var(--line);
}

.project:first-of-type {
  border-top: none;
  padding-top: 0;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 0.55rem;
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.project h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.project h3 a {
  text-decoration: none;
}

.project h3 a:hover {
  color: var(--accent);
}

.stack {
  margin: 0;
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 500;
  line-height: 1.6;
}

.project-body p {
  margin: 0 0 0.85rem;
  color: var(--body-text);
  font-size: 0.95rem;
}

.detail-list {
  margin: 0 0 1rem;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.detail-list li {
  margin-bottom: 0.4rem;
}

.detail-list li strong {
  color: var(--strong-text);
  font-weight: 600;
}

.detail-list code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  padding: 0.12em 0.35em;
  border-radius: 3px;
  background: var(--accent-soft);
  color: var(--accent);
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
}

.text-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.text-link span {
  display: inline-block;
  transition: transform 0.2s ease;
}

.text-link:hover {
  text-decoration: underline;
}

.text-link:hover span {
  transform: translate(2px, -2px);
}

.install-line {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin: 0 0 1rem;
  padding: 0.5rem 0.5rem 0.5rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface-1);
}

.install-line code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-dim);
  overflow-wrap: anywhere;
}

.copy-btn {
  margin-left: auto;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.copy-btn:hover {
  color: var(--accent);
  border-color: var(--accent-border-strong);
}

.copy-btn.is-copied {
  color: var(--diff-add);
  border-color: var(--ok-ring);
}

/* Signature element: diff/audit-log card */
.diff-card {
  margin: 0 0 1.25rem;
  border: 1px solid var(--line);
  border-radius: 5px;
  overflow: hidden;
  background: var(--code-bg);
  font-family: var(--font-mono);
}

.diff-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.6rem 0.9rem;
  background: var(--surface-3);
  border-bottom: 1px solid var(--line);
  font-size: 0.72rem;
  color: var(--muted);
}

.diff-head span:first-child {
  color: var(--ink-dim);
  font-weight: 500;
}

.diff-head-meta {
  text-align: right;
}

.diff-body {
  list-style: none;
  margin: 0;
  padding: 0.4rem 0;
  font-size: 0.8rem;
  line-height: 1.9;
}

.diff-body .line {
  padding: 0.05rem 0.9rem;
}

.diff-body .ln {
  display: inline-block;
  width: 1.1rem;
  text-align: center;
  margin-right: 0.35rem;
  font-weight: 600;
}

.diff-body .add {
  background: var(--diff-add-bg);
  color: var(--ink-dim);
}

.diff-body .add .ln {
  color: var(--diff-add);
}

.diff-body .del {
  background: var(--diff-del-bg);
  color: var(--muted);
}

.diff-body .del .ln {
  color: var(--diff-del);
}

/* Experience timeline */
.job {
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  gap: 0.5rem 1.25rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--line);
}

.job:first-of-type {
  border-top: none;
  padding-top: 0;
}

.job-index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  padding-top: 0.15rem;
}

.job-education .job-index {
  color: var(--muted);
}

.job-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  margin-bottom: 0.55rem;
}

.job h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.org {
  margin: 0.2rem 0 0;
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 500;
}

.when {
  margin: 0;
  flex-shrink: 0;
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
}

.job-content > p {
  margin: 0;
  max-width: 54ch;
  color: var(--body-text);
  font-size: 0.95rem;
}

/* Skills */
.skill-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.75rem 2rem;
}

.skill-group h3 {
  margin: 0 0 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

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

.chips li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--ink-dim);
  background: var(--surface-1);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem;
}

.contact-card {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface-1);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.contact-card:hover {
  border-color: var(--accent-border);
  background: var(--surface-hover);
}

.contact-label {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-card a {
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  overflow-wrap: anywhere;
}

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

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.35rem 2.75rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

footer p {
  margin: 0;
}

.to-top {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-decoration: none;
  color: var(--muted);
}

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

@media (max-width: 720px) {
  .project {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .hero {
    padding-top: 7vh;
    min-height: auto;
  }

  .ledger-row {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .job {
    grid-template-columns: 1.75rem 1fr;
  }

  .job-head {
    flex-direction: column;
    gap: 0.25rem;
  }
}

@media (max-width: 560px) {
  .top-inner {
    padding: 0.75rem 1.1rem;
    gap: 0.75rem;
  }

  .brand-name {
    display: none;
  }

  nav {
    gap: 0.9rem;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  nav::-webkit-scrollbar {
    display: none;
  }

  main {
    padding-inline: 1.1rem;
  }

  .actions .btn {
    flex: 1 1 100%;
  }

  footer {
    padding-inline: 1.1rem;
  }
}

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

  .reveal,
  .glow,
  .status-dot,
  .live-dot {
    animation: none;
  }

  .reveal,
  .reveal-on-scroll {
    opacity: 1;
    transform: none;
  }

  .reveal-on-scroll {
    transition: none;
  }
}

@media print {
  .atmosphere,
  .top,
  .skip-link,
  .copy-btn,
  .to-top,
  .actions {
    display: none !important;
  }

  body {
    background: #fff;
    color: #111;
  }

  a {
    color: #111;
  }

  .reveal,
  .reveal-on-scroll {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .section {
    break-inside: avoid;
  }
}