/* Technical editorial on ink — graphite canvas, steel accent, white CTAs. No green wash. */
:root {
  color-scheme: dark;
  --bg: #090a0c;
  --bg-elevated: #12141a;
  --bg-soft: #0e1015;
  --ink: #f2f4f7;
  --ink-muted: #8b93a1;
  --accent: #9eb6d9;
  --accent-bright: #c9d7eb;
  --cta: #f2f4f7;
  --cta-ink: #0a0b0e;
  --line: rgba(242, 244, 247, 0.09);
  --line-strong: rgba(242, 244, 247, 0.16);
  --max: 70rem;
  --font-sans: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-display: "Syne", "Avenir Next", sans-serif;
  --space: clamp(1.1rem, 3.2vw, 2.1rem);
  --radius: 2px;
  --header-h: 4.25rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    radial-gradient(900px 420px at 88% -12%, rgba(158, 182, 217, 0.07), transparent 55%),
    linear-gradient(180deg, #07080a 0%, var(--bg) 38%, #08090c 100%);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-bright);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--bg);
  padding: 0.5rem 1rem;
  z-index: 100;
}

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

.site-header__inner,
.site-footer__inner,
.section__inner,
.content-wrap {
  width: min(100% - 2 * var(--space), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 10, 12, 0.78);
  backdrop-filter: blur(16px) saturate(1.2);
}

.site-header__inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.site-brand {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.45rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
}

.site-brand:hover {
  color: var(--ink);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.35rem;
  align-items: center;
  justify-content: flex-end;
}

.site-nav a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color 0.2s ease;
}

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

.site-nav__cta {
  color: var(--cta-ink) !important;
  background: var(--cta);
  padding: 0.42rem 0.9rem;
  border-radius: var(--radius);
  font-weight: 600 !important;
}

.site-nav__cta:hover {
  filter: brightness(0.94);
  color: var(--cta-ink) !important;
}

.site-header__menu {
  display: none;
  appearance: none;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  border-radius: var(--radius);
  padding: 0.45rem 0.8rem;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.site-header__drawer {
  width: min(100% - 2 * var(--space), var(--max));
  margin: 0 auto;
  display: grid;
  gap: 0.15rem;
  padding-bottom: 1rem;
}

.site-header__drawer[hidden] {
  display: none !important;
}

.site-header__drawer a {
  color: var(--ink-muted);
  text-decoration: none;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--line);
  font-weight: 500;
}

.site-header__drawer a:hover {
  color: var(--ink);
}

@media (max-width: 900px) {
  .site-nav {
    display: none;
  }

  .site-header__menu {
    display: inline-flex;
  }
}

.site-main {
  padding-bottom: 5rem;
}

.intro {
  position: relative;
  padding: clamp(2rem, 5vw, 3.25rem) 0 clamp(2.75rem, 6vw, 4rem);
}

.intro__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.intro__portrait {
  width: clamp(7.25rem, 20vw, 10.5rem);
  aspect-ratio: 1;
  margin: 0 0 1.35rem;
  border-radius: 50%;
  overflow: hidden;
  /* Separate a black-background photo from the dark page */
  border: 2px solid color-mix(in srgb, var(--ink) 55%, var(--line-strong));
  background: color-mix(in srgb, var(--ink) 8%, #000);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--ink) 18%, transparent),
    inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.intro__portrait img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  /* Lift detail out of a near-black source image */
  filter: brightness(1.18) contrast(1.22) saturate(1.08);
}

.intro__title,
.hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7.5vw, 4.6rem);
  font-weight: 650;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.intro__lede,
.hero__lede {
  margin: 1.15rem 0 0;
  max-width: 32rem;
  font-size: clamp(1.02rem, 2vw, 1.18rem);
  color: var(--ink-muted);
  font-weight: 400;
}

.intro__actions,
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

@media (max-width: 720px) {
  .intro__portrait {
    width: clamp(6.5rem, 28vw, 8.5rem);
  }

  .intro__portrait img {
    object-position: center 18%;
    filter: brightness(1.22) contrast(1.24) saturate(1.06);
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

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

.btn--primary:hover {
  filter: brightness(0.94);
  color: var(--cta-ink);
  transform: translateY(-1px);
}

.btn--ghost {
  border-color: var(--line-strong);
  color: var(--ink);
  background: transparent;
}

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

.section {
  padding: clamp(3rem, 7vw, 5.25rem) 0;
  border-top: 1px solid var(--line);
}

.section__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.8vw, 2.55rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.section__rule {
  width: 2.25rem;
  height: 1px;
  background: var(--accent);
  border: 0;
  margin: 0 0 1.4rem;
  opacity: 0.85;
}

.section__body {
  max-width: 40rem;
  color: var(--ink-muted);
}

.section__body p:first-child {
  margin-top: 0;
}

.resume-preview {
  display: block;
  width: 100%;
  min-height: 70vh;
  margin-top: 1.25rem;
  border: 1px solid var(--border, rgba(255, 255, 255, 0.12));
  background: rgba(0, 0, 0, 0.25);
}

.content-prose {
  max-width: 40rem;
  color: var(--ink-muted);
}

.content-prose a {
  color: var(--accent-bright);
}

.writing-row {
  margin-top: 1.5rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.writing-row a {
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.writing-row a:hover {
  color: var(--accent-bright);
}

.project-list {
  display: grid;
  gap: 1.25rem;
}

.project-slide {
  min-height: auto;
  padding: clamp(1.75rem, 4vw, 2.75rem);
  background: linear-gradient(160deg, var(--bg-elevated), var(--bg-soft));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  justify-content: center;
}

.project-slide h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.project-slide p {
  margin: 0;
  color: var(--ink-muted);
  max-width: 40rem;
}

.project-slide__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.35rem;
}

.timeline-card {
  padding: 0.15rem 0.25rem 0.9rem;
}

.timeline-card h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.timeline-card .meta {
  color: var(--ink-muted);
  font-size: 0.84rem;
  margin-bottom: 0.5rem;
  letter-spacing: 0.01em;
}

.timeline-card p,
.timeline-card div {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.94rem;
}

.skills-groups {
  display: grid;
  gap: 1.5rem;
}

.skills-group__title {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

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

.skill-chips li {
  margin: 0;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--ink-muted);
  font-size: 0.86rem;
}

.content-article {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
}

.content-article h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5vw, 3.3rem);
  font-weight: 650;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.content-meta {
  color: var(--ink-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.25rem 0 1.75rem;
}

.contact-form {
  display: grid;
  gap: 1rem;
  max-width: 36rem;
  margin-top: 1.75rem;
}

.contact-form__row {
  display: grid;
  gap: 0.35rem;
}

.contact-social {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.75rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.25rem 0 2.75rem;
}

.site-footer__inner {
  display: grid;
  gap: 0.85rem;
}

.site-footer__brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.15rem;
}

.site-footer__links a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.site-footer__links a:hover {
  color: var(--ink);
}

.site-footer__copy {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.8rem;
  opacity: 0.8;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(0.85rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.intro,
.section {
  animation: fade-up 0.75s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.section:nth-of-type(2) { animation-delay: 0.05s; }
.section:nth-of-type(3) { animation-delay: 0.1s; }
.section:nth-of-type(4) { animation-delay: 0.15s; }

@media (prefers-reduced-motion: reduce) {
  .intro,
  .section {
    animation: none !important;
  }
}