/* =========================================================
   Base
   ========================================================= */

:root {
  --bg: #0b1220;
  --bg-alt: #111827;
  --surface: rgba(17, 24, 39, 0.78);
  --surface-strong: #172033;

  --text: #f8fafc;
  --text-muted: #a8b3c7;

  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --accent-soft: rgba(56, 189, 248, 0.12);

  --border: rgba(148, 163, 184, 0.18);
  --border-strong: rgba(56, 189, 248, 0.35);

  --success: #4ade80;

  --shadow: 0 20px 60px rgba(0, 0, 0, 0.28);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --content-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;

  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;

  color: var(--text);
  line-height: 1.6;

  background:
    radial-gradient(
      circle at top left,
      rgba(14, 165, 233, 0.16),
      transparent 34%
    ),
    radial-gradient(
      circle at top right,
      rgba(99, 102, 241, 0.1),
      transparent 30%
    ),
    var(--bg);
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}


/* =========================================================
   Navigation
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;

  border-bottom: 1px solid var(--border);
  background: rgba(11, 18, 32, 0.82);
  backdrop-filter: blur(16px);
}

.site-nav {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
  padding: 18px 0;

  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;

  width: 46px;
  height: 46px;
  padding: 0;

  border: 1px solid var(--border);
  border-radius: 12px;

  background: rgba(255, 255, 255, 0.025);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--border-strong);
  background: rgba(56, 189, 248, 0.08);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.2s ease, width 0.2s ease;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-item {
  position: relative;
}

.nav-links a,
.nav-links button {
  position: relative;

  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;

  transition:
    color 0.2s ease,
    transform 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links button:hover,
.nav-links button:focus-visible {
  color: var(--text);
  transform: translateY(-1px);
}

.nav-links a::after {
  content: "";

  position: absolute;
  left: 0;
  bottom: -7px;

  width: 100%;
  height: 2px;

  border-radius: 999px;
  background: var(--accent);

  transform: scaleX(0);
  transform-origin: center;

  transition: transform 0.2s ease;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
}

.nav-link-main {
  display: inline-flex;
  align-items: center;
}

.nav-dropdown-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.nav-dropdown-toggle::before {
  content: "▾";
  display: block;
  font-size: 0.9rem;
  line-height: 1;
}

.nav-dropdown-toggle[aria-expanded="true"]::before {
  content: "▴";
}

.nav-submenu {
  display: none;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(11, 18, 32, 0.82);
}

.nav-submenu.is-open {
  display: flex;
}

.nav-submenu a {
  padding: 6px 8px;
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.86rem;
}

.nav-submenu a:hover,
.nav-submenu a:focus-visible {
  background: rgba(56, 189, 248, 0.08);
  color: var(--text);
}


/* =========================================================
   Shared Layout
   ========================================================= */

.section,
.hero {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
}

.section {
  padding: 88px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.section-heading h2,
.hero h1 {
  margin: 0;

  line-height: 1.08;
  letter-spacing: -0.035em;
}

.section-heading h2 {
  font-size: clamp(2rem, 5vw, 3rem);
}

.section-heading p:not(.eyebrow) {
  margin: 14px 0 0;

  color: var(--text-muted);
  font-size: 1.05rem;
}

.section-actions {
  margin-top: 32px;
}


/* =========================================================
   Eyebrow Labels
   ========================================================= */

.eyebrow {
  margin: 0;

  color: var(--accent);

  font-size: 0.82rem;
  font-weight: 800;

  letter-spacing: 0.12em;
  text-transform: uppercase;
}


/* =========================================================
   Hero
   ========================================================= */

.hero {
  min-height: 72vh;

  display: flex;
  align-items: center;

  padding: 96px 0;
}

.hero-content {
  width: 100%;
  max-width: 1100px;
}

.hero-identity {
  display: flex;
  align-items: center;
  gap: 14px;

  margin-bottom: 18px;
}

.hero-label {
  margin: 0;

  color: var(--text-muted);

  font-size: 0.82rem;
  font-weight: 600;

  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-label::before {
  content: "/";

  margin-right: 14px;

  color: var(--border-strong);
}

.hero h1 {
  max-width: none;

  font-size: clamp(3rem, 5vw, 5rem);
}

.hero h1 span {
  display: block;
  white-space: nowrap;
}

.hero-description {
  max-width: 700px;

  margin: 26px 0 0;

  color: var(--text-muted);

  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;

  margin-top: 34px;
}


/* =========================================================
   Buttons and Text Links
   ========================================================= */

.button,
.text-link {
  display: inline-flex;
  justify-content: center;
  align-items: center;
}

.button {
  min-height: 46px;

  padding: 11px 18px;

  border: 1px solid transparent;
  border-radius: var(--radius-sm);

  font-weight: 700;

  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.button:hover,
.button:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  transform: translateY(-2px);
}

.primary-button {
  color: #04111a;

  background:
    linear-gradient(
      135deg,
      var(--accent),
      #67e8f9
    );

  box-shadow:
    0 10px 30px rgba(56, 189, 248, 0.2);
}

.primary-button:hover,
.primary-button:focus-visible {
  box-shadow:
    0 14px 36px rgba(56, 189, 248, 0.28);
}

.secondary-button {
  color: var(--text);

  border-color: var(--border);

  background:
    rgba(255, 255, 255, 0.035);
}

.secondary-button:hover,
.secondary-button:focus-visible {
  border-color: var(--border-strong);

  background:
    rgba(56, 189, 248, 0.08);
}

.text-link {
  color: var(--accent);

  font-weight: 700;

  transition:
    color 0.2s ease,
    transform 0.2s ease;
}

.text-link:hover,
.text-link:focus-visible {
  color: #7dd3fc;
}


/* =========================================================
   Projects
   ========================================================= */

.projects-grid {
  display: grid;

  grid-template-columns:
    repeat(auto-fit, minmax(300px, 1fr));

  gap: 24px;
}

.project-card,
.featured-project-card {
  position: relative;
  overflow: hidden;

  border: 1px solid var(--border);
  border-radius: var(--radius-lg);

  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.035),
      rgba(255, 255, 255, 0.015)
    ),
    var(--surface);

  box-shadow: var(--shadow);

  transition:
    transform 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.project-card::before,
.featured-project-card::before {
  content: "";

  position: absolute;
  inset: 0 0 auto 0;

  height: 3px;

  background:
    linear-gradient(
      90deg,
      var(--accent),
      #818cf8
    );
}

.project-card:hover,
.featured-project-card:hover {
  transform: translateY(-5px);

  border-color: var(--border-strong);

  box-shadow:
    0 28px 70px rgba(0, 0, 0, 0.35);
}

.project-content,
.featured-project-content {
  padding: 32px;
}

.project-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;

  margin: 0 0 18px;

  color: var(--success);

  font-size: 0.82rem;
  font-weight: 800;

  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-status::before {
  content: "";

  width: 8px;
  height: 8px;

  border-radius: 50%;

  background: var(--success);

  box-shadow:
    0 0 14px rgba(74, 222, 128, 0.75);
}

.project-lifecycle {
  padding: 4px 8px;

  border: 1px solid rgba(74, 222, 128, 0.35);
  border-radius: 999px;

  color: #bbf7d0;
  background: rgba(74, 222, 128, 0.08);

  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.project-card h3,
.featured-project-content h3 {
  margin: 0;

  font-size: clamp(1.7rem, 3vw, 2.2rem);

  letter-spacing: -0.02em;
}

.project-description,
.featured-project-content p:not(.project-status) {
  margin: 16px 0 0;

  color: var(--text-muted);

  line-height: 1.75;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;

  margin-top: 24px;
}

.tech-stack span {
  padding: 7px 11px;

  border: 1px solid var(--border);
  border-radius: 999px;

  color: #cbd5e1;

  background:
    rgba(255, 255, 255, 0.035);

  font-size: 0.82rem;
  font-weight: 600;
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;

  gap: 14px;

  margin-top: 28px;
}

.project-meta {
  margin: 24px 0 0;

  color: #738097;

  font-size: 0.82rem;
}


/* =========================================================
   Featured Projects
   ========================================================= */

.featured-projects {
  display: grid;

  grid-template-columns:
    repeat(2, minmax(0, 1fr));

  gap: 24px;

  max-width: 1080px;
  margin: 0 auto;
}


/* =========================================================
   Infrastructure
   ========================================================= */

.infrastructure-grid {
  display: grid;

  grid-template-columns:
    repeat(4, minmax(0, 1fr));

  gap: 18px;
}

.infrastructure-card {
  min-height: 150px;

  padding: 24px;

  border: 1px solid var(--border);
  border-radius: var(--radius-md);

  background:
    rgba(255, 255, 255, 0.025);

  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease;
}

.infrastructure-card:hover {
  transform: translateY(-3px);

  border-color: var(--border-strong);

  background:
    rgba(56, 189, 248, 0.055);
}

.infrastructure-card h3 {
  margin: 0;

  font-size: 1rem;
}

.infrastructure-card p {
  margin: 10px 0 0;

  color: var(--text-muted);

  font-size: 0.94rem;
}


/* =========================================================
   Secondary Page Hero
   ========================================================= */

.page-hero {
  width: min(calc(100% - 32px), var(--content-width));

  margin: 0 auto;

  padding: 92px 0 72px;
}

.page-hero-content {
  width: 100%;
  max-width: 1100px;
}

.page-hero h1 {
  max-width: none;

  margin: 14px 0 0;

  font-size: clamp(3rem, 5vw, 5rem);

  line-height: 1.08;
  letter-spacing: -0.035em;
}

.page-intro {
  max-width: 760px;

  margin: 26px 0 0;

  color: var(--text-muted);

  font-size: clamp(1.05rem, 2vw, 1.25rem);
}


/* =========================================================
   About Layout
   ========================================================= */

.about-grid {
  display: grid;

  grid-template-columns:
    minmax(260px, 0.8fr)
    minmax(0, 1.4fr);

  gap: 72px;
  align-items: start;
}

.about-grid .section-heading {
  margin-bottom: 0;
}

.about-copy {
  max-width: 760px;
}

.about-copy p {
  margin: 0 0 22px;

  color: var(--text-muted);

  font-size: 1.06rem;
  line-height: 1.8;
}

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


/* =========================================================
   Principles
   ========================================================= */

.principles-grid {
  display: grid;

  grid-template-columns:
    repeat(2, minmax(0, 1fr));

  gap: 20px;
}

.principle-card {
  min-height: 210px;

  padding: 28px;

  border: 1px solid var(--border);
  border-radius: var(--radius-md);

  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03),
      rgba(255, 255, 255, 0.015)
    ),
    var(--surface);

  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease;
}

.principle-card:hover {
  transform: translateY(-4px);

  border-color: var(--border-strong);

  background:
    rgba(56, 189, 248, 0.045);
}

.principle-card h3 {
  margin: 0;

  font-size: 1.15rem;
}

.principle-card p {
  margin: 12px 0 0;

  color: var(--text-muted);

  line-height: 1.7;
}


/* =========================================================
   Current Focus
   ========================================================= */

.focus-grid {
  display: grid;

  grid-template-columns:
    repeat(4, minmax(0, 1fr));

  gap: 18px;
}

.focus-card {
  position: relative;

  min-height: 220px;

  padding: 26px;

  overflow: hidden;

  border: 1px solid var(--border);
  border-radius: var(--radius-md);

  background:
    rgba(255, 255, 255, 0.025);

  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease;
}

.focus-card::before {
  content: "";

  position: absolute;
  top: 0;
  left: 0;

  width: 54px;
  height: 2px;

  background:
    linear-gradient(
      90deg,
      var(--accent),
      #818cf8
    );
}

.focus-card:hover {
  transform: translateY(-4px);

  border-color: var(--border-strong);

  background:
    rgba(56, 189, 248, 0.045);
}

.focus-card h3 {
  margin: 0;

  font-size: 1.05rem;
}

.focus-card p {
  margin: 12px 0 0;

  color: var(--text-muted);

  font-size: 0.94rem;
  line-height: 1.7;
}


/* =========================================================
   Experience
   ========================================================= */

.experience-grid {
  display: grid;

  grid-template-columns:
    repeat(3, minmax(0, 1fr));

  gap: 20px;
}

.experience-card {
  padding: 30px;

  border: 1px solid var(--border);
  border-radius: var(--radius-md);

  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03),
      rgba(255, 255, 255, 0.015)
    ),
    var(--surface);
}

.experience-value {
  margin: 0 0 14px;

  color: var(--accent);

  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;

  line-height: 1;
  letter-spacing: -0.04em;
}

.experience-card h3 {
  margin: 0;

  font-size: 1.15rem;
}

.experience-card p:not(.experience-value) {
  margin: 12px 0 0;

  color: var(--text-muted);

  line-height: 1.7;
}


/* =========================================================
   About CTA
   ========================================================= */

.about-cta {
  padding-top: 72px;
  padding-bottom: 100px;
}

.about-cta-content {
  position: relative;
  overflow: hidden;

  padding: 42px;

  border: 1px solid var(--border);
  border-radius: var(--radius-lg);

  background:
    radial-gradient(
      circle at top right,
      rgba(56, 189, 248, 0.12),
      transparent 34%
    ),
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.035),
      rgba(255, 255, 255, 0.015)
    ),
    var(--surface);

  box-shadow: var(--shadow);
}

.about-cta-content h2 {
  margin: 0;

  font-size: clamp(2rem, 4vw, 3rem);

  line-height: 1.1;
  letter-spacing: -0.03em;
}

.about-cta-content p:not(.eyebrow) {
  max-width: 660px;

  margin: 16px 0 26px;

  color: var(--text-muted);

  font-size: 1.02rem;
}


/* =========================================================
   Contact
   ========================================================= */

.contact-grid {
  display: grid;

  grid-template-columns:
    repeat(2, minmax(0, 1fr));

  gap: 20px;
}

.contact-card {
  position: relative;

  min-height: 260px;

  padding: 30px;

  display: flex;
  flex-direction: column;
  align-items: flex-start;

  border: 1px solid var(--border);
  border-radius: var(--radius-md);

  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03),
      rgba(255, 255, 255, 0.015)
    ),
    var(--surface);

  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease;
}

.contact-card:hover {
  transform: translateY(-4px);

  border-color: var(--border-strong);

  background:
    rgba(56, 189, 248, 0.045);
}


/* =========================================================
   Contact Card Header
   ========================================================= */

.contact-card-header {
  display: flex;
  align-items: center;
  gap: 10px;

  margin-bottom: 14px;
}

.contact-icon {
  flex: 0 0 auto;

  width: 20px;
  height: 20px;

  color: var(--accent);
}

.contact-label {
  margin: 0;

  color: var(--accent);

  font-size: 0.82rem;
  font-weight: 800;

  letter-spacing: 0.1em;
  text-transform: uppercase;
}


/* =========================================================
   Contact Card Content
   ========================================================= */

.contact-card h3 {
  margin: 0;

  font-size: clamp(1.5rem, 3vw, 2rem);

  line-height: 1.15;
  letter-spacing: -0.025em;
}

.contact-card > p:not(.contact-address) {
  margin: 14px 0 24px;

  color: var(--text-muted);

  line-height: 1.75;
}

.contact-address {
  margin: 2px 0 18px;

  color: var(--text-muted);

  font-size: 0.95rem;
  font-weight: 600;
}

.contact-action {
  margin-top: auto;
}


/* =========================================================
   Professional Interests
   ========================================================= */

.contact-opportunities {
  border-top: 1px solid var(--border);
}

.contact-opportunities-grid {
  display: grid;

  grid-template-columns:
    minmax(260px, 0.8fr)
    minmax(0, 1.4fr);

  gap: 72px;
  align-items: start;
}

.contact-opportunities-grid .section-heading {
  margin-bottom: 0;
}

.interest-list {
  display: grid;
}

.interest-item {
  padding: 24px 0;

  border-bottom: 1px solid var(--border);
}

.interest-item:first-child {
  padding-top: 0;
}

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

.interest-item h3 {
  margin: 0;

  font-size: 1.15rem;
}

.interest-item p {
  max-width: 680px;

  margin: 8px 0 0;

  color: var(--text-muted);

  line-height: 1.7;
}


/* =========================================================
   Active Navigation State
   ========================================================= */

.nav-links a[aria-current="page"] {
  color: var(--text);
}

.nav-links a[aria-current="page"]::after {
  transform: scaleX(1);
}


/* =========================================================
   External Navigation Separation
   ========================================================= */

.external-nav-link:first-of-type {
  margin-left: 14px;
}

.external-nav-link:first-of-type::before {
  content: "";

  position: absolute;
  left: -20px;
  top: 50%;

  width: 1px;
  height: 18px;

  background: var(--border);

  transform: translateY(-50%);
}


/* =========================================================
   Footer
   ========================================================= */

.site-footer {
  width: min(calc(100% - 32px), var(--content-width));

  margin: 0 auto;

  padding: 32px 0 42px;

  border-top: 1px solid var(--border);

  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;

  color: var(--text-muted);

  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  transition: color 0.2s ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text);
}


/* =========================================================
   Accessibility
   ========================================================= */

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}


/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 1100px) {

  .hero h1 span {
    white-space: normal;
  }

}


@media (max-width: 1000px) {

  .about-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .about-grid .section-heading {
    max-width: 720px;
  }

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

  .contact-opportunities-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

}


@media (max-width: 900px) {

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

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

  .footer-links {
    flex-wrap: wrap;
  }

}


@media (max-width: 800px) {

  .experience-grid,
  .contact-grid,
  .featured-projects {
    grid-template-columns: 1fr;
  }

}


@media (max-width: 700px) {

  .site-nav {
    position: relative;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    left: 0;
    z-index: 1001;

    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;

    padding: 12px;

    border: 1px solid var(--border);
    border-radius: var(--radius-md);

    background: rgba(11, 18, 32, 0.96);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-item {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    margin: 0;
  }

  .nav-links a,
  .nav-links button {
    width: 100%;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 0.92rem;
    text-align: left;
  }

  .nav-item > a,
  .nav-item > button {
    width: auto;
  }

  .nav-link-main {
    flex: 1 1 auto;
    width: auto;
    min-height: 42px;
    text-align: left;
  }

  .nav-dropdown-toggle {
    display: inline-flex;
    width: 36px;
    height: 42px;
    flex: 0 0 36px;
    margin-left: 6px;
  }

  .nav-submenu {
    width: 100%;
    margin: 0 0 8px;
    padding: 8px 8px 10px;
  }

  .nav-links a::after {
    display: none;
  }

  .nav-links a:hover,
  .nav-links a:focus-visible {
    background: rgba(56, 189, 248, 0.08);
    transform: none;
  }

  .external-nav-link:first-of-type {
    margin-left: 0;
  }

  .external-nav-link:first-of-type::before {
    display: none;
  }

  .hero {
    min-height: auto;

    padding: 72px 0;
  }

  .hero-identity {
    align-items: flex-start;
    flex-direction: column;

    gap: 4px;
  }

  .hero-label::before {
    display: none;
  }

  .section {
    padding: 68px 0;
  }

  .project-content,
  .featured-project-content {
    padding: 24px;
  }

  .page-hero {
    min-height: auto;

    padding: 72px 0;
  }

  .principles-grid,
  .focus-grid {
    grid-template-columns: 1fr;
  }

  .principle-card,
  .focus-card {
    min-height: auto;
  }

  .about-cta-content {
    padding: 30px 24px;
  }

  .external-nav-link:first-of-type {
    margin-left: 0;
  }

  .external-nav-link:first-of-type::before {
    display: none;
  }

}


@media (max-width: 520px) {

  .section,
  .hero,
  .page-hero {
    width: min(calc(100% - 20px), var(--content-width));
  }

  .site-nav {
    width: min(calc(100% - 20px), var(--content-width));
  }

  .nav-links {
    width: 100%;
    gap: 8px 12px;
  }

  .nav-links a {
    flex: 1 1 auto;
    text-align: left;
    min-height: 32px;
  }

  .infrastructure-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 60px 0 52px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 12vw, 3.4rem);
  }

  .hero-description {
    font-size: 1rem;
  }

  .hero-actions,
  .project-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .page-hero .hero-actions {
    width: 100%;
    max-width: 420px;
    margin-top: 28px;
  }

  .button,
  .text-link {
    width: 100%;
    justify-content: center;
  }

  .section {
    padding: 56px 0;
  }

  .project-content,
  .featured-project-content {
    padding: 20px;
  }

  .about-cta-content {
    padding: 24px 20px;
  }

  .site-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 22px;
    gap: 12px;
  }

  .footer-links {
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px 16px;
    text-align: center;
  }

}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================
   Resume
========================================== */

.card-label {
    display: inline-block;
    margin-bottom: .5rem;

    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;

    color: var(--accent);
}

.school-name {
    margin: .75rem 0;

    font-weight: 500;
    color: var(--text-muted);
}

.card-meta {
    margin-bottom: 1.5rem;

    font-size: .95rem;
    color: var(--text-muted);
}

.card-list {
    margin: 0;
    padding-left: 1.2rem;

    color: var(--text-muted);
}

.card-list li {
    margin-bottom: .45rem;
}

.focus-card h3 {
    margin-bottom: .75rem;
}

.card-list li::marker {
    color: var(--accent);
}

.resume-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-top: 2rem;
}

.resume-grid .focus-card {
    min-height: auto;
    padding: 32px;
}

/* ==========================================
   Resume Timeline
========================================== */

.resume-timeline {
    margin-top: 2.5rem;
}

.resume-role {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 2.5rem;
}

.resume-role-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.resume-role-header h3 {
    margin: 0;
}

.resume-role-title {
    margin-top: .5rem;
    color: var(--text-muted);
    font-weight: 500;
}

.resume-role-date {
    margin: 0;
    white-space: nowrap;
    color: var(--text-muted);
    font-weight: 600;
}

.resume-role-content > p:first-child {
    margin-top: 0;
    margin-bottom: 2rem;
    line-height: 1.8;
}

/* ==========================================
   Career Progression
========================================== */

.career-progression-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.career-stage {
    background: rgba(255, 255, 255, .02);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.75rem;

    transition:
        transform .2s ease,
        border-color .2s ease;
}

.career-stage:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
}

.career-stage h4 {
    margin: .5rem 0 .75rem;
    font-size: 1.05rem;
}

.career-stage p:last-child {
    margin: 0;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ==========================================
   Resume Impact
========================================== */

.resume-impact {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.resume-impact h4 {
    margin-bottom: .75rem;
}

.resume-impact p {
    margin: 0;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ==========================================
   Resume Responsive
========================================== */

@media (max-width: 900px) {
    .resume-role-header {
        flex-direction: column;
        gap: 1rem;
    }
    .resume-role-date {
        white-space: normal;
    }
    .career-progression-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 800px) {
    .resume-grid {
        grid-template-columns: 1fr;
    }

}

/* =========================================================
   Project Case Studies
   ========================================================= */

.case-study-hero .page-intro {
  max-width: 800px;
}


/* Two-column narrative sections */

.case-study-layout {
  display: grid;

  grid-template-columns:
    minmax(260px, 0.8fr)
    minmax(0, 1.4fr);

  gap: 72px;
  align-items: start;
}

.case-study-layout .section-heading {
  margin-bottom: 0;
}

.case-study-copy {
  max-width: 760px;
}

.case-study-copy p {
  margin: 0 0 22px;

  color: var(--text-muted);

  font-size: 1.05rem;
  line-height: 1.8;
}

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


/* Role / challenge cards */

.case-study-role-grid {
  display: grid;

  grid-template-columns:
    repeat(2, minmax(0, 1fr));

  gap: 20px;
}

.case-study-card {
  min-height: 190px;

  padding: 28px;

  border: 1px solid var(--border);
  border-radius: var(--radius-md);

  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03),
      rgba(255, 255, 255, 0.015)
    ),
    var(--surface);

  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    background 0.22s ease;
}

.case-study-card:hover {
  transform: translateY(-4px);

  border-color: var(--border-strong);

  background:
    rgba(56, 189, 248, 0.045);
}

.case-study-card h3 {
  margin: 0;

  font-size: 1.1rem;
}

.case-study-card p {
  margin: 12px 0 0;

  color: var(--text-muted);

  line-height: 1.75;
}


/* Architecture */

.architecture-flow {
  display: grid;

  grid-template-columns:
    repeat(7, auto);

  align-items: stretch;

  gap: 14px;

  margin-top: 34px;
}

.architecture-node {
  min-width: 0;

  padding: 24px;

  border: 1px solid var(--border);
  border-radius: var(--radius-md);

  background:
    rgba(255, 255, 255, 0.025);
}

.architecture-node h3 {
  margin: 8px 0 0;
}

.architecture-node p:last-child {
  margin: 12px 0 0;

  color: var(--text-muted);

  font-size: 0.92rem;
  line-height: 1.65;
}

.architecture-arrow {
  display: flex;

  align-items: center;
  justify-content: center;

  color: var(--accent);

  font-size: 1.5rem;
  font-weight: 700;

  transform: rotate(-90deg);
}


/* Case-study lists */

.case-study-list {
  margin: 24px 0 0;
  padding-left: 1.25rem;

  color: var(--text-muted);
}

.case-study-list li {
  margin-bottom: 12px;

  line-height: 1.7;
}

.case-study-list li::marker {
  color: var(--accent);
}


/* Technology stack */

.case-study-tech {
  max-width: 900px;

  margin-top: 0;
}


/* =========================================================
   Case Study Responsive
   ========================================================= */

@media (max-width: 1000px) {

  .case-study-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .case-study-layout .section-heading {
    max-width: 720px;
  }

  .architecture-flow {
    grid-template-columns: 1fr;
  }

  .architecture-arrow {
    min-height: 24px;

    transform: none;
  }

}


@media (max-width: 700px) {

  .case-study-role-grid {
    grid-template-columns: 1fr;
  }

  .case-study-card {
    min-height: auto;

    padding: 24px;
  }

  .architecture-node {
    padding: 22px;
  }

}