:root {
  --color-bg: #0b0f19;
  --color-bg-alt: #141a29;
  --color-accent: #d9a441;
  --color-text: #e8ecf4;
  --color-text-muted: #8992a8;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --radius: 0.75rem;
  --transition-fast: 150ms ease;
  --transition-base: 350ms ease;
  --max-width: 72rem;
}

*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(148, 163, 196, 0.07);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(148, 163, 196, 0.14);
  z-index: 10;
}
.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.site-nav { display: flex; gap: var(--space-3); flex-wrap: wrap; justify-content: center; }
.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 1.15rem;
  padding: var(--space-1) var(--space-2);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.nav-link:hover { color: var(--color-text); }
.nav-link[aria-current="true"] {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-5) var(--space-3);
  scroll-margin-top: 5rem;
}

.contact {
  border-top: 1px solid var(--color-bg-alt);
  padding: var(--space-4) var(--space-3);
  text-align: center;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.stat-card {
  border-radius: var(--radius);
  padding: var(--space-3);
  text-align: center;
}
.stat-card__value, .stat-card__suffix {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
}
.stat-card p { color: var(--color-text-muted); margin: var(--space-1) 0 0; font-size: 0.9rem; }

.timeline__item {
  border-radius: var(--radius);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
}
.timeline__dates { color: var(--color-text-muted); margin-top: 0; }
.timeline__item li { text-align: left; font-size: 1.1rem; line-height: 1.6; margin-bottom: 0.5rem; }

.competency-grid, .tool-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}
.competency-card {
  border-radius: var(--radius);
  padding: var(--space-2);
  flex: 1 1 12rem;
  text-align: center;
  transition: transform var(--transition-fast);
}
.competency-card:hover { transform: translateY(-2px); }

.tool-pill {
  border: 1px solid var(--color-text-muted);
  border-radius: 999px;
  padding: 0.25rem var(--space-2);
  font-size: 0.85rem;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}
.tool-pill:hover { border-color: var(--color-accent); color: var(--color-accent); }

.home {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}
.home-hero {
  display: grid;
  grid-template-columns: minmax(14rem, 20rem) 1fr;
  align-items: center;
  gap: var(--space-4);
  width: 100%;
  text-align: left;
}
.home-hero__media { display: flex; justify-content: center; }
.home-hero__content { display: flex; flex-direction: column; gap: var(--space-1); }
.home-photo {
  width: 16rem;
  height: 16rem;
  border-radius: 1.75rem;
  object-fit: cover;
  border: 2px solid var(--color-accent);
  box-shadow: 0 0 40px rgba(217, 164, 65, 0.22);
}
.home-kicker {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0;
}
.home-name {
  font-size: clamp(2rem, 6vw, 3.5rem);
  margin: 0;
  text-align: left;
}
.home-title {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin: 0;
  text-align: left;
}

@media (max-width: 48rem) {
  .home-hero { grid-template-columns: 1fr; text-align: center; }
  .home-hero__content { align-items: center; }
  .home-name, .home-title { text-align: center; }
}
.home-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(14rem, 1fr));
  gap: var(--space-2);
  width: 100%;
  margin-top: var(--space-2);
}
.home-box {
  border-radius: var(--radius);
  padding: var(--space-3);
  text-align: center;
  overflow-wrap: break-word;
}
.home-box__label {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 var(--space-1);
}
.home-box__quote { font-size: 1.2rem; font-style: italic; margin: 0; }
.home-box--quote {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding-bottom: calc(var(--space-3) + 1.5rem);
}
.home-box__attribution {
  position: absolute;
  right: var(--space-3);
  bottom: var(--space-3);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
  text-align: right;
}
.home-box p:not(.home-box__label):not(.home-box__attribution) { margin: 0; text-align: center; }

.home-box--large .home-box__label { font-size: 1.15rem; }
.home-box--large p:not(.home-box__label) { font-size: 1.15rem; line-height: 1.7; }

@media (max-width: 60rem) {
  .home-grid { grid-template-columns: 1fr; }
}

.skills-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
.skills-column p { text-align: center; }
.skills-column__title { margin-top: 0; }

.skills-column--engineering .skills-column__title { text-align: center; }
.skills-column--engineering p { text-align: right; }

.skills-column--centered { text-align: center; }
.skills-column--centered .competency-grid,
.skills-column--centered .tool-pills {
  justify-content: center;
}

@media (max-width: 40rem) {
  .skills-columns { grid-template-columns: 1fr; }
}

#projects h2, #skills h2, #experience h2 {
  text-align: center;
  font-size: clamp(2rem, 5vw, 3rem);
}

.section-intro {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  text-align: center;
  max-width: 40rem;
  margin: 0 auto var(--space-2);
}

.projects-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) 0 var(--space-4);
}
.project-card {
  position: relative;
  display: flex;
  flex: 1 1 18rem;
  max-width: 24rem;
  flex-direction: column;
  border-radius: 0;
  overflow: hidden;
  background: rgba(148, 163, 196, 0.07);
  border: 1px solid rgba(148, 163, 196, 0.14);
  text-decoration: none;
  color: inherit;
  font-family: inherit;
  transition: transform var(--transition-fast);
}
.project-card:hover, .project-card:focus-visible {
  transform: translateY(-3px);
  outline: none;
}
/* CAD-viewport corner brackets: eight gradient slivers, one pair per
   corner, drawn on a single pseudo-element so no extra markup is needed. */
.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  background:
    linear-gradient(to right, var(--color-accent) 2px, transparent 2px) top left / 14px 2px no-repeat,
    linear-gradient(to bottom, var(--color-accent) 2px, transparent 2px) top left / 2px 14px no-repeat,
    linear-gradient(to left, var(--color-accent) 2px, transparent 2px) top right / 14px 2px no-repeat,
    linear-gradient(to bottom, var(--color-accent) 2px, transparent 2px) top right / 2px 14px no-repeat,
    linear-gradient(to right, var(--color-accent) 2px, transparent 2px) bottom left / 14px 2px no-repeat,
    linear-gradient(to top, var(--color-accent) 2px, transparent 2px) bottom left / 2px 14px no-repeat,
    linear-gradient(to left, var(--color-accent) 2px, transparent 2px) bottom right / 14px 2px no-repeat,
    linear-gradient(to top, var(--color-accent) 2px, transparent 2px) bottom right / 2px 14px no-repeat;
}
.project-card:hover::before, .project-card:focus-visible::before { opacity: 1; }
.project-card__thumb-wrap { overflow: hidden; background: #fff; }
.project-card__thumb { width: 100%; height: 14rem; object-fit: contain; display: block; transition: transform var(--transition-base); }
.project-card:hover .project-card__thumb, .project-card:focus-visible .project-card__thumb { transform: scale(1.04); }
.project-card__sheet-label {
  position: absolute;
  top: var(--space-1);
  left: var(--space-1);
  font-family: "Courier New", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  background: rgba(8, 11, 18, 0.78);
  padding: 0.15rem 0.5rem;
  border: 1px solid rgba(217, 164, 65, 0.4);
}
.project-card__body {
  padding: var(--space-2) var(--space-3) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}
.project-card__title { margin: 0; font-size: 1.15rem; }
.project-card__summary { margin: 0; color: var(--color-text-muted); font-size: 0.95rem; line-height: 1.5; flex: 1; }
.project-card__link {
  margin-top: var(--space-1);
  font-size: 0.85rem;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.project-card__link::after { content: "\2192"; transition: transform var(--transition-fast); }
.project-card:hover .project-card__link::after, .project-card:focus-visible .project-card__link::after {
  transform: translateX(3px);
}

.project-page__back {
  display: inline-block;
  color: var(--color-text-muted);
  text-decoration: none;
  margin-bottom: var(--space-3);
}
.project-page__back:hover { color: var(--color-accent); }

/* Static "drawing sheet" corner ticks, shared by the intro block and each
   figure — the always-on counterpart to the interactive gold brackets on
   the homepage project cards. */
.project-page__intro, .project-page__figure {
  position: relative;
  border-radius: 0;
}
.project-page__intro::before, .project-page__figure::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(to right, rgba(217, 164, 65, 0.55) 1px, transparent 1px) top left / 10px 1px no-repeat,
    linear-gradient(to bottom, rgba(217, 164, 65, 0.55) 1px, transparent 1px) top left / 1px 10px no-repeat,
    linear-gradient(to left, rgba(217, 164, 65, 0.55) 1px, transparent 1px) top right / 10px 1px no-repeat,
    linear-gradient(to bottom, rgba(217, 164, 65, 0.55) 1px, transparent 1px) top right / 1px 10px no-repeat,
    linear-gradient(to right, rgba(217, 164, 65, 0.55) 1px, transparent 1px) bottom left / 10px 1px no-repeat,
    linear-gradient(to top, rgba(217, 164, 65, 0.55) 1px, transparent 1px) bottom left / 1px 10px no-repeat,
    linear-gradient(to left, rgba(217, 164, 65, 0.55) 1px, transparent 1px) bottom right / 10px 1px no-repeat,
    linear-gradient(to top, rgba(217, 164, 65, 0.55) 1px, transparent 1px) bottom right / 1px 10px no-repeat;
}
.project-page__intro {
  background: rgba(148, 163, 196, 0.07);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(148, 163, 196, 0.14);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
}
.project-page h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 var(--space-2); }
.project-page__description {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  line-height: 1.7;
  margin: 0;
  text-align: left;
}

/* Drawing title block: a compact, scannable strip of project metadata,
   distinct from the prose above rather than restating it. */
.project-page__specs {
  display: flex;
  flex-wrap: wrap;
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: 1px solid rgba(148, 163, 196, 0.14);
}
.project-page__spec {
  flex: 1 1 12rem;
  padding: 0 var(--space-3);
  border-left: 1px solid rgba(148, 163, 196, 0.14);
  text-align: center;
}
.project-page__spec:first-child { border-left: none; }
.project-page__spec dt {
  font-family: "Courier New", monospace;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.3rem;
}
.project-page__spec dd {
  margin: 0;
  font-size: 0.95rem;
}
.project-page__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  align-items: start;
  gap: var(--space-3);
  counter-reset: fig;
}
.project-page__figure {
  margin: 0;
  overflow: hidden;
  background: rgba(148, 163, 196, 0.07);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(148, 163, 196, 0.14);
  counter-increment: fig;
}
.project-page__figure img { width: 100%; height: auto; display: block; }
.project-page__figure figcaption {
  padding: var(--space-2);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  text-align: center;
}
.project-page__figure figcaption::before {
  content: "FIG. " counter(fig, decimal-leading-zero) " \2014 ";
  font-family: "Courier New", monospace;
  color: var(--color-accent);
  letter-spacing: 0.03em;
}

.stat-card, .timeline__item, .competency-card, .home-box,
.home-kicker, .home-name, .home-title, h2, .tool-pill, .project-card, .section-intro, .skills-column > p {
  opacity: 0;
  transform: translateY(1rem) scale(0.9);
  transition: opacity var(--transition-base), transform 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.home-photo {
  opacity: 0;
  transform: scale(0.94);
  transition: opacity 900ms ease-out, transform 900ms ease-out;
}
.home-photo.is-visible {
  opacity: 1;
  transform: scale(1);
}
.stat-card, .timeline__item, .competency-card, .home-box {
  background: rgba(148, 163, 196, 0.07);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(148, 163, 196, 0.14);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 30px rgba(217, 164, 65, 0.2), 0 0 12px rgba(232, 236, 244, 0.06);
}
.stat-card.is-visible, .timeline__item.is-visible, .competency-card.is-visible, .home-box.is-visible,
.home-kicker.is-visible, .home-name.is-visible, .home-title.is-visible, h2.is-visible, .tool-pill.is-visible, .project-card.is-visible, .section-intro.is-visible, .skills-column > p.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.stat-card {
  transform: translateY(1rem) scale(0.85);
  transition: opacity var(--transition-base), transform 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.stat-card.is-visible {
  transform: translateY(0) scale(1);
}

.competency-card.is-visible:hover { transform: translateY(-2px); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .stat-card, .timeline__item, .competency-card, .home-box,
  .home-kicker, .home-photo, .home-name, .home-title, h2, .tool-pill, .project-card, .section-intro, .skills-column > p {
    transition: none;
  }
}

.contact__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin: var(--space-2) 0 var(--space-4);
}
.contact__links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-text-muted);
}
.contact__links a:hover { color: var(--color-accent); border-color: var(--color-accent); }
.contact__icon { flex-shrink: 0; }
.btn-download {
  background: var(--color-accent);
  color: var(--color-bg);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius);
  border-bottom: none !important;
  font-weight: 600;
}