/* ==========================================================================
   Lend Kalemasi — portfolio
   Visual direction: "engineering field notes". Warm paper, deep teal ink,
   and the orange full stop from the LK. logo used as the single signal colour.
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  /* Colour */
  --paper: #f2efe8;
  --paper-2: #e8e4da;
  --card: #f8f6f1;
  --ink: #0f1f1e;
  --ink-2: #2b3b39;
  --muted: #5a6663;
  --line: rgba(15, 31, 30, 0.13);
  --line-strong: rgba(15, 31, 30, 0.26);
  --teal: #0e5c55;
  --mint: #8fd3c3;
  --signal: #f0981a;      /* logo orange — decoration & dark backgrounds only */
  --signal-text: #9c4804; /* AA-compliant orange for text on paper */

  --on-dark: #eef2ee;
  --on-dark-muted: #9aaba6;
  --on-dark-line: rgba(238, 242, 238, 0.16);

  --focus: var(--signal-text);

  /* Type */
  --font-sans: "Instrument Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --fs-hero: clamp(4.4rem, 13.4vw, 12.75rem);
  --fs-display: clamp(2.4rem, 5.6vw, 4.9rem);
  --fs-display-sm: clamp(2rem, 3.3vw, 3rem);
  --fs-statement: clamp(1.6rem, 3.1vw, 2.75rem);
  --fs-lead: clamp(1.22rem, 1.75vw, 1.5rem);
  --fs-body: 1.0625rem;
  --fs-small: 0.9375rem;
  --fs-mono: 0.75rem;

  /* Space & layout */
  --shell: 84rem;
  --gutter: clamp(1rem, 4vw, 3.5rem);
  --col-gap: clamp(1rem, 2.4vw, 2rem);
  --section-space: clamp(5.5rem, 11vw, 9.5rem);
  --header-h: 4.5rem;

  --radius-xs: 3px;
  --radius-sm: 6px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 180ms;
  --dur: 320ms;
  --dur-slow: 600ms;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html:not(.lenis) {
    scroll-behavior: smooth;
  }
}

body {
  min-width: 20rem;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.6;
  font-kerning: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  text-wrap: balance;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font: inherit;
  color: inherit;
}

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

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

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

[tabindex="-1"]:focus {
  outline: none;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.shell {
  width: 100%;
  max-width: calc(var(--shell) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.full-stop {
  color: var(--signal);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--paper);
  background: var(--ink);
  border-radius: var(--radius-sm);
  font-size: var(--fs-small);
  font-weight: 600;
  transform: translateY(-200%);
  transition: transform var(--dur-fast) var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- Shared type ---------- */
.kicker,
.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.4;
  text-transform: uppercase;
}

.kicker::before {
  flex: none;
  width: 0.4rem;
  height: 0.4rem;
  content: "";
  background: var(--signal);
  border-radius: 50%;
}

.kicker--on-dark {
  color: var(--mint);
}

.section-title {
  font-size: var(--fs-display);
  font-stretch: 88%;
  letter-spacing: -0.035em;
  line-height: 0.98;
}

.section-title--sm {
  font-size: var(--fs-display-sm);
  line-height: 1.04;
}

.lede {
  max-width: 34rem;
  color: var(--ink-2);
  font-size: var(--fs-body);
  line-height: 1.6;
}

.count {
  margin-left: 0.4em;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 0.24em;
  font-stretch: 100%;
  font-weight: 500;
  letter-spacing: 0;
  vertical-align: 2.75em;
}

.text-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  font-weight: 600;
  background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1px no-repeat;
  transition: color var(--dur-fast) ease, background-size var(--dur) var(--ease-out);
}

.text-link:hover {
  color: var(--teal);
  background-size: 0% 1px;
  background-position: 100% 100%;
}

/* ---------- Buttons ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  font-size: var(--fs-small);
  font-weight: 600;
  line-height: 1.2;
  transition:
    background-color var(--dur-fast) ease,
    border-color var(--dur-fast) ease,
    color var(--dur-fast) ease,
    transform var(--dur-fast) var(--ease-out);
}

.button:active {
  transform: scale(0.98);
}

.button-icon {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 400;
  transition: transform var(--dur) var(--ease-out);
}

.button:hover .button-icon {
  transform: translate(2px, -2px);
}

.button[href^="#"]:hover .button-icon {
  transform: translateY(3px);
}

.button-primary {
  color: var(--paper);
  background: var(--ink);
}

.button-primary:hover {
  background: var(--teal);
}

.button-ghost {
  color: var(--ink);
  border-color: var(--line-strong);
}

.button-ghost:hover {
  border-color: var(--ink);
  background: var(--card);
}

.button-signal {
  color: var(--ink);
  background: var(--signal);
}

.button-signal:hover {
  background: var(--on-dark);
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto;
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  transition:
    background-color var(--dur) ease,
    border-color var(--dur) ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(242, 239, 232, 0.94);
  border-color: var(--line);
}

.site-header.is-dark:not(.is-open) {
  --focus: var(--signal);
  color: var(--on-dark);
  background: rgba(15, 31, 30, 0.94);
  border-color: var(--on-dark-line);
}

.site-header.is-dark:not(.is-open) .site-nav-list a,
.site-header.is-dark:not(.is-open) .header-clock {
  color: var(--on-dark-muted);
}

.site-header.is-dark:not(.is-open) .site-nav-list a:hover,
.site-header.is-dark:not(.is-open) .site-nav-list a[aria-current="true"],
.site-header.is-dark:not(.is-open) .header-clock time {
  color: var(--on-dark);
}

.site-header.is-dark:not(.is-open) .site-nav-list a[aria-current="true"] .nav-index {
  color: var(--signal);
}

.site-header.is-dark:not(.is-open) .nav-index {
  color: var(--on-dark-muted);
}

.site-header.is-dark:not(.is-open) .header-clock,
.site-header.is-dark:not(.is-open) .nav-toggle {
  border-color: var(--on-dark-line);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: none;
  gap: 0.7rem;
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  border-radius: 7px;
  transition: transform var(--dur) var(--ease-out);
}

.brand:hover .brand-mark {
  transform: rotate(-6deg);
}

.site-nav {
  margin-left: auto;
}

.site-nav-list {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.75rem);
}

.site-nav-list a {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  padding: 0.5rem 0;
  color: var(--ink-2);
  font-size: var(--fs-small);
  font-weight: 500;
  transition: color var(--dur-fast) ease;
}

.site-nav-list a::after {
  position: absolute;
  right: 0;
  bottom: 0.3rem;
  left: 0;
  height: 1px;
  content: "";
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur) var(--ease-out);
}

.site-nav-list a:hover,
.site-nav-list a[aria-current="true"] {
  color: var(--ink);
}

.site-nav-list a:hover::after,
.site-nav-list a[aria-current="true"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-index {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  transition: color var(--dur-fast) ease;
}

.site-nav-list a[aria-current="true"] .nav-index {
  color: var(--signal-text);
}

.site-nav-footer {
  display: none;
}

.header-clock {
  display: flex;
  align-items: center;
  flex: none;
  gap: 0.5rem;
  padding-left: 1.75rem;
  color: var(--muted);
  border-left: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.02em;
}

.header-clock time {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.status-dot {
  position: relative;
  flex: none;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--signal);
  border-radius: 50%;
}

.status-dot::after {
  position: absolute;
  inset: -4px;
  content: "";
  border: 1px solid var(--signal);
  border-radius: 50%;
  opacity: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .status-pill .status-dot::after {
    animation: status-ping 2.8s var(--ease-out) 1.6s 3;
  }
}

@keyframes status-ping {
  0% {
    opacity: 0.9;
    transform: scale(0.6);
  }
  70%,
  100% {
    opacity: 0;
    transform: scale(1.6);
  }
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  min-height: 2.75rem;
  margin-left: auto;
  padding: 0 0.85rem;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}

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

.nav-toggle-lines,
.nav-toggle-lines::before {
  display: block;
  width: 1rem;
  height: 1.5px;
  content: "";
  background: currentColor;
  transition: transform var(--dur) var(--ease-out);
}

.nav-toggle-lines {
  position: relative;
  transform: translateY(-3px);
}

.nav-toggle-lines::before {
  position: absolute;
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-lines {
  transform: translateY(0) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-lines::before {
  transform: translateY(-6px) rotate(-90deg);
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-content: end;
  min-height: min(100svh, 64rem);
  column-gap: var(--col-gap);
  padding-top: calc(var(--header-h) + clamp(2rem, 6vh, 4.5rem));
  padding-bottom: clamp(2rem, 4vh, 3rem);
}

.hero-top {
  display: flex;
  grid-column: 1 / -1;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-bottom: clamp(1.5rem, 4vh, 2.75rem);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.45rem 0.85rem 0.45rem 0.75rem;
  color: var(--ink-2);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
}

.hero-title {
  grid-column: 1 / 10;
  grid-row: 2;
  align-self: end;
  font-size: var(--fs-hero);
  font-stretch: 82%;
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 0.84;
}

.hero-line {
  display: block;
  /* Masks the character rise; padding keeps the overflow box from cropping glyphs */
  overflow: clip;
  padding: 0.04em 0.06em 0.08em 0;
  margin: -0.04em 0 -0.08em;
}

.hero-figure {
  grid-column: 9 / -1;
  grid-row: 2 / 4;
  align-self: start;
  margin: 0;
}

.hero-figure-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--paper-2);
  border-radius: var(--radius-sm);
}

.hero-portrait {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 30%;
  filter: saturate(0.88) contrast(1.03);
  transform-origin: 50% 30%;
}

.hero-caption {
  display: flex;
  white-space: nowrap;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.7rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.hero-body {
  grid-column: 1 / 8;
  grid-row: 3;
  padding-top: clamp(1.75rem, 4vh, 2.75rem);
}

.hero-role {
  max-width: 26ch;
  font-size: var(--fs-lead);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.hero-intro {
  max-width: 34rem;
  margin-top: 1rem;
  color: var(--ink-2);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.spec-strip {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: clamp(3rem, 7vh, 5rem) 0 0;
  border-top: 1px solid var(--line-strong);
}

.spec-strip > div {
  padding: 1rem 1rem 0 0;
}

.spec-strip > div + div {
  padding-left: 1rem;
  border-left: 1px solid var(--line);
}

.spec-strip dt {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.spec-strip dd {
  margin: 0.35rem 0 0;
  font-size: var(--fs-small);
  font-weight: 500;
}

.spec-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
}

/* ---------- Sections ---------- */
.section {
  padding-block: var(--section-space);
}

.section-head {
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.section-head-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 22rem);
  align-items: end;
  gap: 1.5rem var(--col-gap);
  margin-top: 1.25rem;
}

.section-head-row .section-title {
  max-width: 15ch;
}

/* About */
.about {
  border-top: 1px solid var(--line);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--col-gap);
}

.about-aside {
  grid-column: 1 / 5;
  align-self: start;
  position: sticky;
  top: calc(var(--header-h) + 2.5rem);
}

.about-aside .section-title {
  max-width: 11ch;
  margin-top: 1.25rem;
}

.about-main {
  grid-column: 5 / -1;
}

.statement {
  max-width: 30ch;
  font-size: var(--fs-statement);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.16;
}

.statement strong {
  color: var(--teal);
  font-weight: 500;
}

.about-detail {
  display: grid;
  gap: 2.5rem;
  margin-top: clamp(3rem, 7vw, 5rem);
}

.focus-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--col-gap);
}

.focus-list li {
  padding-top: 1rem;
  border-top: 1px solid var(--line-strong);
}

.focus-index {
  display: block;
  color: var(--signal-text);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
}

.focus-list h3 {
  margin-top: 1.5rem;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.focus-list p {
  margin-top: 0.3rem;
  color: var(--muted);
  font-size: var(--fs-small);
  line-height: 1.5;
}

/* Projects */
.projects {
  border-top: 1px solid var(--line);
}

.project-list {
  border-bottom: 1px solid var(--line-strong);
}

.project {
  position: relative;
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1.05fr) minmax(0, 1.2fr) minmax(0, 0.85fr);
  gap: 1.25rem var(--col-gap);
  padding: clamp(1.75rem, 3vw, 2.5rem) 1rem;
  margin-inline: -1rem;
  border-top: 1px solid var(--line-strong);
  isolation: isolate;
}

.project::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  content: "";
  background: var(--card);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-slow) var(--ease-out);
}

.project:hover::before,
.project:focus-within::before {
  transform: scaleX(1);
}

.project-index {
  padding-top: 0.2rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  transition: color var(--dur-fast) ease;
}

.project:hover .project-index,
.project:focus-within .project-index {
  color: var(--signal-text);
}

.project-type {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.project-title {
  margin-top: 0.6rem;
  font-size: clamp(1.6rem, 2.5vw, 2.25rem);
  font-stretch: 88%;
  letter-spacing: -0.03em;
  line-height: 1.04;
  transition: transform var(--dur) var(--ease-out);
}

.project:hover .project-title {
  transform: translateX(0.35rem);
}

.project-summary {
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.55;
}

.project-details {
  margin-top: 0.85rem;
}

.project-details summary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 2.75rem;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  list-style: none;
  cursor: pointer;
}

.project-details summary::-webkit-details-marker {
  display: none;
}

.project-details summary::before {
  display: grid;
  width: 1.25rem;
  height: 1.25rem;
  place-items: center;
  content: "+";
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 0.875rem;
  line-height: 1;
  transition: background-color var(--dur-fast) ease, color var(--dur-fast) ease;
}

.project-details summary:hover::before {
  color: var(--paper);
  background: var(--teal);
}

.project-details[open] summary::before {
  content: "‘2";
}

.project-notes {
  display: grid;
  gap: 0.5rem;
  padding: 0.25rem 0 0.25rem 1rem;
  margin-top: 0.25rem;
  color: var(--ink-2);
  border-left: 2px solid var(--signal);
  font-size: var(--fs-small);
  line-height: 1.55;
}

.project-notes strong {
  color: var(--ink);
  font-weight: 600;
}

@media (prefers-reduced-motion: no-preference) {
  .project-details[open] .project-notes {
    animation: notes-in var(--dur-slow) var(--ease-out);
  }
}

@keyframes notes-in {
  from {
    opacity: 0;
    transform: translateY(-0.4rem);
  }
}

@supports (interpolate-size: allow-keywords) {
  .project-details {
    interpolate-size: allow-keywords;
  }

  .project-details::details-content {
    block-size: 0;
    overflow: clip;
    transition:
      block-size var(--dur) var(--ease-out),
      content-visibility var(--dur) allow-discrete;
  }

  .project-details[open]::details-content {
    block-size: auto;
  }
}

.project-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tag-list li {
  padding: 0.25rem 0.45rem;
  color: var(--ink-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  line-height: 1.3;
}

.source-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  font-size: var(--fs-small);
  font-weight: 600;
  background: linear-gradient(currentColor, currentColor) 0 calc(100% - 0.55rem) / 100% 1px no-repeat;
  transition: color var(--dur-fast) ease;
}

.source-arrow {
  display: inline-grid;
  width: 1.6rem;
  height: 1.6rem;
  place-items: center;
  color: var(--paper);
  background: var(--ink);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  transition: background-color var(--dur-fast) ease, transform var(--dur) var(--ease-out);
}

.source-link:hover {
  color: var(--teal);
}

.source-link:hover .source-arrow {
  background: var(--teal);
  transform: rotate(45deg);
}

/* Skills */
.skills {
  background: var(--paper-2);
}

.spec-sheet {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
}

.spec-group {
  padding: 1.25rem var(--col-gap) 0.5rem 0;
}

.spec-group + .spec-group {
  padding-left: var(--col-gap);
  border-left: 1px solid var(--line-strong);
}

.spec-group h3 {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.spec-group h3 span {
  display: grid;
  width: 1.4rem;
  height: 1.4rem;
  place-items: center;
  color: var(--paper);
  background: var(--ink);
  border-radius: 2px;
  font-size: 0.6875rem;
  letter-spacing: 0;
}

.spec-group ul {
  margin-top: 1.25rem;
}

.spec-group li {
  position: relative;
  padding: 0.75rem 0;
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.3;
  border-bottom: 1px solid var(--line);
  transition: color var(--dur-fast) ease, padding-left var(--dur) var(--ease-out);
}

.spec-group li::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 0.5rem;
  height: 2px;
  content: "";
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease-out);
}

.spec-group li:hover {
  padding-left: 0.9rem;
  color: var(--teal);
}

.spec-group li:hover::before {
  transform: scaleX(1);
}

/* Experience */
.experience-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--col-gap);
}

.experience-aside {
  grid-column: 1 / 5;
  align-self: start;
  position: sticky;
  top: calc(var(--header-h) + 2.5rem);
}

.experience-aside .section-title {
  max-width: 10ch;
  margin-top: 1.25rem;
}

.experience-aside .lede {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: var(--fs-small);
}

.education-card {
  margin-top: 2.5rem;
  padding: 1.25rem 1.35rem 1.4rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 2px solid var(--teal);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.education-label {
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.education-card h3 {
  margin-top: 0.6rem;
  font-size: 1.375rem;
  font-stretch: 90%;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.education-card p:last-child {
  margin-top: 0.6rem;
  color: var(--muted);
  font-size: var(--fs-small);
  line-height: 1.5;
}

.timeline-wrap {
  position: relative;
  grid-column: 6 / -1;
}

.timeline-rail {
  position: absolute;
  top: 0.5rem;
  bottom: 0;
  left: 0.3rem;
  width: 1px;
  background: var(--line-strong);
}

.timeline-progress {
  position: absolute;
  inset: 0;
  background: var(--teal);
  transform: scaleY(0);
  transform-origin: top;
}

html:not(.has-motion) .timeline-progress {
  display: none;
}

.timeline-item {
  position: relative;
  padding: 0 0 clamp(2.5rem, 5vw, 3.75rem) 2.75rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  position: absolute;
  top: 0.3rem;
  left: 0;
  width: 0.65rem;
  height: 0.65rem;
  content: "";
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 50%;
}

.timeline-item:first-child::before {
  background: var(--signal);
  border-color: var(--signal);
}

.timeline-date {
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.timeline-content h3 {
  margin-top: 0.75rem;
  font-size: clamp(1.45rem, 2.2vw, 1.9rem);
  font-stretch: 88%;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.timeline-meta {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: var(--fs-small);
}

.timeline-meta span {
  color: var(--ink);
  font-weight: 600;
}

.timeline-points {
  display: grid;
  gap: 0.55rem;
  max-width: 40rem;
  margin-top: 1.1rem;
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.55;
}

.timeline-points li {
  position: relative;
  padding-left: 1.25rem;
}

.timeline-points li::before {
  position: absolute;
  top: 0.78em;
  left: 0;
  width: 0.55rem;
  height: 1px;
  content: "";
  background: var(--ink-2);
}

/* ---------- Contact & footer (dark finale) ---------- */
.contact,
.site-footer {
  --focus: var(--signal);
  color: var(--on-dark);
  background: var(--ink);
}

.contact ::selection,
.site-footer ::selection {
  color: var(--ink);
  background: var(--signal);
}

.contact {
  padding-top: var(--section-space);
  padding-bottom: clamp(4rem, 8vw, 6.5rem);
}

.contact-title {
  max-width: 16ch;
  margin-top: 1.5rem;
  font-size: clamp(3rem, 8.4vw, 7.75rem);
  font-stretch: 84%;
  letter-spacing: -0.045em;
  line-height: 0.9;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--col-gap);
  margin-top: clamp(3rem, 6vw, 5rem);
}

.contact-copy {
  grid-column: 1 / 7;
}

.contact-copy > p {
  max-width: 30rem;
  color: var(--on-dark-muted);
  font-size: var(--fs-body);
}

.email-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin: 2rem 0 2.25rem;
}

.email-link {
  font-size: clamp(1.35rem, 2.6vw, 2.15rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
  overflow-wrap: anywhere;
  background: linear-gradient(var(--signal), var(--signal)) 0 100% / 0% 2px no-repeat;
  transition: background-size var(--dur-slow) var(--ease-out), color var(--dur-fast) ease;
}

.email-link:hover {
  background-size: 100% 2px;
}

.copy-button {
  display: inline-flex;
  align-items: center;
  min-height: 2.25rem;
  padding: 0 0.8rem;
  color: var(--on-dark);
  background: transparent;
  border: 1px solid var(--on-dark-line);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color var(--dur-fast) ease, color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}

.copy-button:hover {
  border-color: var(--on-dark);
}

.copy-button[data-state="copied"] {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--mint);
}

.copy-button[data-state="error"] {
  color: var(--signal);
  border-color: var(--signal);
}

.contact-links {
  grid-column: 8 / -1;
  align-self: end;
  border-top: 1px solid var(--on-dark-line);
}

.contact-links a {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--on-dark-line);
  font-size: 1.25rem;
  font-weight: 500;
  transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}

.contact-links a > span:first-child {
  transition: transform var(--dur) var(--ease-out);
}

.contact-link-meta {
  color: var(--on-dark-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.02em;
}

.contact-links a > span:last-child {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transition: color var(--dur-fast) ease, transform var(--dur) var(--ease-out);
}

.contact-links a:hover {
  border-color: var(--mint);
}

.contact-links a:hover > span:first-child {
  transform: translateX(0.4rem);
}

.contact-links a:hover > span:last-child {
  color: var(--signal);
  transform: translate(2px, -2px);
}

.site-footer {
  padding-bottom: 2rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--on-dark-line);
  color: var(--on-dark-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.02em;
}

.footer-mark {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-mark img {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 6px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
}

.footer-nav a,
.back-to-top {
  color: var(--on-dark);
  transition: color var(--dur-fast) ease;
}

.footer-nav a:hover,
.back-to-top:hover {
  color: var(--mint);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.5rem;
}

.footer-meta time {
  color: var(--on-dark);
  font-variant-numeric: tabular-nums;
}

/* ---------- Motion pre-states (only when JS motion is active) ---------- */
.has-motion [data-hero],
.has-motion [data-reveal],
.has-motion .hero-caption {
  opacity: 0;
}

.has-motion .hero-title {
  visibility: hidden;
}

.has-motion .hero-figure-frame {
  clip-path: inset(100% 0 0 0);
}

/* Lenis (from lenis/dist/lenis.css) */
html.lenis,
html.lenis body {
  height: auto;
}

.lenis:not(.lenis-autoToggle).lenis-stopped {
  overflow: clip;
}

.lenis [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-smooth iframe {
  pointer-events: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 80rem) {
  .header-clock {
    display: none;
  }
}

@media (max-width: 64rem) {
  .hero {
    min-height: 0;
  }

  .hero-title {
    grid-column: 1 / -1;
  }

  .hero-figure {
    grid-column: 8 / -1;
    grid-row: 3;
    padding-top: clamp(1.75rem, 4vh, 2.75rem);
  }

  .hero-body {
    grid-column: 1 / 8;
  }

  .spec-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .spec-strip > div:nth-child(3) {
    padding-left: 0;
    border-left: 0;
  }

  .spec-strip > div:nth-child(n + 3) {
    margin-top: 1rem;
    border-top: 1px solid var(--line);
  }

  .about-aside,
  .experience-aside {
    position: static;
  }

  .about-aside,
  .about-main,
  .experience-aside,
  .timeline-wrap {
    grid-column: 1 / -1;
  }

  .about-aside .section-title,
  .experience-aside .section-title {
    max-width: 16ch;
  }

  .about-main {
    margin-top: 2.5rem;
  }

  .experience-aside {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: var(--col-gap);
    margin-bottom: 3.5rem;
  }

  .experience-aside > .kicker,
  .experience-aside > .section-title,
  .experience-aside > .lede {
    grid-column: 1;
  }

  .education-card {
    grid-column: 2;
    grid-row: 1 / 4;
    align-self: end;
    margin-top: 0;
  }

  .project {
    grid-template-columns: 3rem minmax(0, 1fr) minmax(0, 1fr);
  }

  .project-head {
    grid-column: 2 / -1;
  }

  .project-body {
    grid-column: 2;
  }

  .project-aside {
    grid-column: 3;
  }

  .spec-sheet {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .spec-group:nth-child(3) {
    padding-left: 0;
    border-left: 0;
  }

  .spec-group:nth-child(n + 3) {
    margin-top: 1.5rem;
    border-top: 1px solid var(--line-strong);
  }

  .contact-copy,
  .contact-links {
    grid-column: 1 / -1;
  }

  .contact-links {
    margin-top: 3rem;
  }
}

@media (max-width: 47.99rem) {
  :root {
    --header-h: 4rem;
  }

  /* Mobile navigation panel */
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    z-index: -1;
    top: var(--header-h);
    right: 0;
    left: 0;
    display: grid;
    gap: 2rem;
    max-height: calc(100svh - var(--header-h));
    padding: 1rem var(--gutter) 2rem;
    margin: 0;
    overflow-y: auto;
    visibility: hidden;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    opacity: 0;
    transform: translateY(-0.75rem);
    transition:
      opacity var(--dur) var(--ease-out),
      transform var(--dur) var(--ease-out),
      visibility 0s linear var(--dur);
  }

  .site-nav[data-open="true"] {
    visibility: visible;
    opacity: 1;
    transform: none;
    transition:
      opacity var(--dur) var(--ease-out),
      transform var(--dur) var(--ease-out),
      visibility 0s;
  }

  .site-nav-list {
    display: block;
  }

  .site-nav-list li {
    border-bottom: 1px solid var(--line);
  }

  .site-nav-list a {
    display: flex;
    gap: 1rem;
    padding: 0.85rem 0;
    font-size: 1.75rem;
    font-stretch: 88%;
    font-weight: 600;
    letter-spacing: -0.02em;
  }

  .site-nav-list a::after {
    display: none;
  }

  .site-nav-list a[aria-current="true"] {
    color: var(--teal);
  }

  .nav-index {
    min-width: 1.75rem;
  }

  .site-nav-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: var(--fs-mono);
  }

  .site-nav-footer a {
    padding: 0.5rem 0;
  }

  /* Hero */
  .hero {
    --fs-hero: clamp(4rem, 22vw, 7.5rem);
    padding-top: calc(var(--header-h) + 1.75rem);
  }

  .hero-top {
    flex-direction: column;
    align-items: flex-start;
    padding-bottom: 1.75rem;
  }

  .hero-body {
    grid-column: 1 / -1;
    grid-row: 3;
  }

  .hero-figure {
    grid-column: 3 / -1;
    grid-row: 4;
    padding-top: 3rem;
  }

  .spec-strip {
    grid-row: 5;
  }

  .section-head-row {
    grid-template-columns: 1fr;
  }

  .focus-list {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .focus-list li {
    display: grid;
    grid-template-columns: 2.5rem 1fr;
    padding-block: 1rem;
  }

  .focus-list h3 {
    margin-top: 0;
    font-size: 1.0625rem;
  }

  .focus-list p {
    grid-column: 2;
  }

  /* Projects stack */
  .project {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .project-index {
    position: absolute;
    top: clamp(1.75rem, 3vw, 2.5rem);
    right: 1rem;
    padding: 0;
  }

  .project-head,
  .project-body,
  .project-aside {
    grid-column: 1;
  }

  .project-head {
    padding-right: 2.5rem;
  }

  .project-aside {
    gap: 0.75rem;
  }

  .project:hover .project-title {
    transform: none;
  }

  .experience-aside {
    display: block;
  }

  .education-card {
    margin-top: 2rem;
  }

  .timeline-item {
    padding-left: 2rem;
  }

  .contact-title {
    font-size: clamp(3.25rem, 15vw, 5rem);
  }

  .contact-links a {
    grid-template-columns: 1fr auto;
  }

  .contact-link-meta {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 30rem) {
  .spec-strip {
    grid-template-columns: 1fr;
  }

  .spec-strip > div,
  .spec-strip > div + div {
    padding: 0.85rem 0;
    margin: 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .spec-strip > div:first-child {
    border-top: 0;
  }

  .spec-strip dd {
    margin-top: 0.2rem;
  }

  .hero-actions {
    display: grid;
  }

  .spec-group li {
    font-size: 1rem;
  }
}

@media (max-width: 22rem) {
  .brand-name {
    display: none;
  }

  .spec-sheet {
    grid-template-columns: 1fr;
  }

  .spec-group,
  .spec-group + .spec-group {
    padding-left: 0;
    padding-right: 0;
    border-left: 0;
  }

  .spec-group + .spec-group {
    margin-top: 1.5rem;
    border-top: 1px solid var(--line-strong);
  }
}

/* Hover-only flourishes stay off on touch screens */
@media (hover: none) {
  .project::before,
  .project:hover .project-title,
  .spec-group li:hover {
    transform: none;
    padding-left: 0;
  }

  .project:focus-within::before {
    transform: scaleX(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}