:root {
  --orion-blue: #294563;
  --midnight-blue: #17283D;
  --muted-teal: #527875;
  --soft-gold: #B49A61;
  --warm-ivory: #F7F3EA;
  --warm-white: #FCFAF5;
  --charcoal: #252A2D;
  --slate: #687177;
  --border-color: #DDD7CB;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Nunito Sans", sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 0.875rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4.5rem;
  --space-2xl: 7rem;
  --container: 1120px;
  --header-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  letter-spacing: 0.01em;
  color: var(--charcoal);
  background: var(--warm-ivory);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--orion-blue);
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-toggle:focus-visible,
.lang-toggle button:focus-visible {
  outline: 2px solid var(--orion-blue);
  outline-offset: 2px;
  border-radius: 1px;
}

h1, h2, h3, h4 {
  font-family: var(--font-body);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--midnight-blue);
  margin: 0 0 0.75rem;
}

p {
  margin: 0 0 1rem;
}

ul, ol {
  margin: 0;
  padding: 0;
}

.orion-mark {
  display: block;
  width: 1.6rem;
  height: 0.7rem;
  color: var(--orion-blue);
  flex-shrink: 0;
}

.orion-mark circle {
  fill: currentColor;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--midnight-blue);
  color: var(--warm-ivory);
  padding: 0.5rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  top: 1rem;
}

.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--warm-white);
  border-top: 3px solid var(--orion-blue);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--border-color);
}

.header-inner {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  line-height: 1.1;
}

.brand:hover {
  color: inherit;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-mark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  color: var(--orion-blue);
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--slate);
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--charcoal);
}

.nav a:hover {
  color: var(--orion-blue);
}

.nav-cta {
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--orion-blue);
  color: var(--orion-blue) !important;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.nav-cta:hover {
  background: var(--orion-blue);
  color: var(--warm-ivory) !important;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--border-color);
  background: var(--warm-white);
}

.lang-toggle button {
  appearance: none;
  border: 0;
  background: transparent;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  color: var(--slate);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.lang-toggle button[aria-pressed="true"] {
  background: var(--orion-blue);
  color: var(--warm-ivory);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border-color);
  background: var(--warm-white);
  padding: 0.65rem;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--midnight-blue);
  transition: transform 0.25s var(--ease);
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  background: var(--warm-ivory);
  isolation: isolate;
}

.hero-orion {
  position: absolute;
  top: clamp(2rem, 8vh, 4rem);
  right: min(6vw, 4rem);
  width: 3.75rem;
  height: 1.65rem;
  color: var(--orion-blue);
  opacity: 0.72;
}

.hero-content {
  width: min(100% - 2.5rem, var(--container));
  margin: 0 auto;
  padding: var(--space-xl) 0;
  max-width: 42rem;
}

.hero-brand {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--midnight-blue);
  margin: 0 0 0.65rem;
}

.hero-role {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-teal);
  margin-bottom: 1.5rem;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5.4vw, 3.75rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.08;
  max-width: 18ch;
  margin-bottom: 1.25rem;
  color: var(--midnight-blue);
}

.hero-support {
  font-size: 1.1rem;
  color: var(--charcoal);
  max-width: 34rem;
  margin-bottom: 2.25rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.7rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--orion-blue);
  color: var(--warm-ivory);
  border-color: var(--orion-blue);
}

.btn-primary:hover {
  background: var(--midnight-blue);
  border-color: var(--midnight-blue);
  color: var(--warm-ivory);
}

.btn-ghost {
  background: transparent;
  color: var(--orion-blue);
  border-color: var(--orion-blue);
}

.btn-ghost:hover {
  background: rgba(41, 69, 99, 0.08);
  color: var(--orion-blue);
}

/* Sections */
.section {
  padding: var(--space-2xl) 0;
}

.section-intro {
  max-width: 40rem;
  margin-bottom: var(--space-xl);
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-teal);
  margin-bottom: 0.75rem;
}

.section-intro h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  margin-bottom: 1rem;
}

.lead {
  font-size: 1.15rem;
  color: var(--slate);
  margin-bottom: 0;
}

/* Profile */
.profile-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.profile-copy p {
  color: var(--charcoal);
}

.profile-copy p:last-child {
  margin-bottom: 0;
}

.focus-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-teal);
  margin-bottom: 0.85rem;
}

.focus-list {
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.focus-list li {
  padding: 0.65rem 0;
  border-top: 1px solid var(--border-color);
  font-weight: 500;
  color: var(--charcoal);
}

.focus-list li:last-child {
  border-bottom: 1px solid var(--border-color);
}

/* Projects */
.project {
  background: var(--warm-white);
  border: 1px solid var(--border-color);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  margin-bottom: var(--space-lg);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.project:last-child {
  margin-bottom: 0;
}

.project:hover {
  border-color: var(--orion-blue);
  transform: translateY(-2px);
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.project-status {
  color: var(--muted-teal);
  margin: 0;
}

.project-category {
  color: var(--slate);
  margin: 0;
}

.project-head h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 3.6vw, 2.5rem);
  margin-bottom: 0.35rem;
}

.project-tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--slate);
  margin-bottom: 0.75rem;
}

.project-desc {
  font-size: 1.15rem;
  max-width: 36rem;
  color: var(--charcoal);
}

.project-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin: var(--space-lg) 0;
}

.project-col p,
.project-contrib p {
  color: var(--charcoal);
}

.project-col h4,
.project-modules h4,
.project-contrib h4 {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-teal);
  margin-bottom: 0.5rem;
}

.project-modules ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.project-modules li {
  position: relative;
  padding-left: 0.9rem;
  color: var(--charcoal);
}

.project-modules li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 0.35rem;
  height: 0.35rem;
  background: var(--soft-gold);
}

.project-contrib {
  margin: var(--space-md) 0 var(--space-lg);
  max-width: 48rem;
}

.project-principle {
  margin-top: 0.75rem;
  font-family: var(--font-display);
  font-style: italic;
  color: var(--slate);
  border-left: 2px solid var(--soft-gold);
  padding-left: 1rem;
}

.stack-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.stack-list li {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--charcoal);
  padding: 0.35rem 0.7rem;
  background: var(--warm-ivory);
  border: 1px solid var(--border-color);
}

/* Featured project card */
.project--featured {
  background: var(--orion-blue);
  border-color: var(--orion-blue);
  color: var(--warm-ivory);
}

.project--featured:hover {
  border-color: var(--midnight-blue);
}

.project--featured .project-status {
  color: var(--soft-gold);
}

.project--featured .project-category {
  color: rgba(247, 243, 234, 0.65);
}

.project--featured .project-head h3 {
  color: var(--warm-ivory);
}

.project--featured .project-tagline {
  color: rgba(247, 243, 234, 0.75);
}

.project--featured .project-desc,
.project--featured .project-col p,
.project--featured .project-contrib p {
  color: rgba(247, 243, 234, 0.88);
}

.project--featured .project-col h4,
.project--featured .project-modules h4,
.project--featured .project-contrib h4 {
  color: var(--soft-gold);
}

.project--featured .project-modules li {
  color: rgba(247, 243, 234, 0.88);
}

.project--featured .project-modules li::before {
  background: var(--soft-gold);
}

.project--featured .project-principle {
  border-left-color: var(--soft-gold);
  color: rgba(247, 243, 234, 0.85);
}

.project--featured .stack-list li {
  color: var(--warm-ivory);
  background: rgba(247, 243, 234, 0.1);
  border-color: rgba(247, 243, 234, 0.3);
}

/* Experience */
.timeline {
  list-style: none;
  display: grid;
  gap: var(--space-lg);
}

.timeline-item {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-color);
}

.timeline-period {
  font-weight: 700;
  font-size: 1rem;
  color: var(--orion-blue);
  margin: 0;
}

.timeline-content h3 {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.timeline-org {
  color: var(--slate);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.timeline-content p {
  color: var(--charcoal);
}

.timeline-content ul {
  list-style: none;
  display: grid;
  gap: 0.35rem;
  margin-top: 0.75rem;
}

.timeline-content li {
  position: relative;
  padding-left: 1rem;
  color: var(--charcoal);
}

.timeline-content li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--soft-gold);
}

/* Capabilities */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg) var(--space-md);
  margin-bottom: var(--space-xl);
}

.cap-item h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.cap-item p {
  color: var(--slate);
  margin: 0;
}

.toolkit .stack-list {
  margin-top: 0.25rem;
}

/* Approach */
.approach-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.approach-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.approach-num {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--orion-blue);
  line-height: 1;
}

.approach-item h3 {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
}

.approach-item p {
  color: var(--slate);
  margin: 0;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.about-block h3 {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-teal);
  margin-bottom: 0.85rem;
}

.about-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.about-meta {
  color: var(--slate);
  font-weight: 500;
}

.about-block p {
  color: var(--charcoal);
}

.plain-list {
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.plain-list li {
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--charcoal);
}

/* Contact */
.contact {
  padding-bottom: var(--space-xl);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: var(--space-lg);
}

.contact-link {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--border-color);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.contact-link span {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-teal);
}

.contact-link strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--midnight-blue);
}

.contact-link:hover strong {
  color: var(--orion-blue);
}

.download-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 1.5rem 0 2rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--slate);
  font-size: 0.9rem;
}

.footer-inner p {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.footer-inner .orion-mark {
  width: 1.1rem;
  height: 0.5rem;
  color: var(--slate);
  opacity: 0.8;
}

.footer-inner a {
  text-decoration: none;
  font-size: 1.1rem;
  color: var(--orion-blue);
}

.footer-inner a:hover {
  color: var(--midnight-blue);
}

/* Motion */
.reveal-hero {
  opacity: 0;
  transform: translateY(10px);
  animation: heroIn 0.55s var(--ease) forwards;
}

.reveal-hero:nth-child(1) { animation-delay: 0.03s; }
.reveal-hero:nth-child(2) { animation-delay: 0.08s; }
.reveal-hero:nth-child(3) { animation-delay: 0.14s; }
.reveal-hero:nth-child(4) { animation-delay: 0.2s; }
.reveal-hero:nth-child(5) { animation-delay: 0.26s; }

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

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal-hero,
  .reveal {
    opacity: 1;
    transform: none;
    animation: none;
    transition: none;
  }
}

/* Responsive */
@media (max-width: 900px) {
  .profile-grid,
  .project-body,
  .cap-grid,
  .approach-list,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .cap-grid {
    gap: var(--space-md);
  }

  .hero-orion {
    top: 1.5rem;
    right: 1.5rem;
    width: 3rem;
    height: 1.3rem;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
    background: var(--warm-white);
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-cta {
    margin-top: 0.75rem;
    text-align: center;
    border: 1px solid var(--orion-blue);
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-lg);
  }

  .hero-headline {
    max-width: none;
  }

  .section {
    padding: var(--space-xl) 0;
  }

  .project {
    padding: 1.5rem 1.25rem;
  }

  .project:hover {
    transform: none;
  }

  .container,
  .header-inner,
  .hero-content {
    width: min(100% - 1.75rem, var(--container));
  }
}