:root {
  --color-bg: #fbfbfd;
  --color-bg-elevated: #ffffff;
  --color-text: #1d1d1f;
  --color-muted: #6e6e73;
  --color-accent: #2563eb;
  --color-accent-soft: rgba(37, 99, 235, 0.1);
  --color-border: rgba(60, 60, 67, 0.13);
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.05);
  --shadow-card-hover: 0 4px 10px rgba(0, 0, 0, 0.06), 0 16px 32px rgba(0, 0, 0, 0.08);
  --max-width: 780px;
  --radius: 18px;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0b0c0f;
    --color-bg-elevated: #17181c;
    --color-text: #f5f5f7;
    --color-muted: #a1a1a6;
    --color-accent: #5b8dff;
    --color-accent-soft: rgba(91, 141, 255, 0.16);
    --color-border: rgba(255, 255, 255, 0.1);
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-card-hover: 0 4px 10px rgba(0, 0, 0, 0.35), 0 16px 32px rgba(0, 0, 0, 0.4);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-stack);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

/* Header */

.site-header {
  position: relative;
  padding: 4rem 1.25rem 3rem;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(60% 60% at 50% 0%, var(--color-accent-soft), transparent 70%);
}

.header-content {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
}

.header-eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.site-header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 5vw, 2.75rem);
  letter-spacing: -0.02em;
  font-weight: 700;
}

.header-tagline {
  margin: 0 auto 0.75rem;
  max-width: 34rem;
  font-size: 1.1rem;
  color: var(--color-muted);
}

.header-location {
  margin: 0 0 1.5rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.contact-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
  font-size: 0.9rem;
}

.contact-links li {
  white-space: nowrap;
}

.contact-handle {
  color: var(--color-muted);
}

/* Sticky nav */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--color-border);
  padding: 0.5rem 1.25rem;
}

.nav-toggle {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font: inherit;
  font-weight: 600;
  color: var(--color-text);
  padding: 0.5rem 0;
  cursor: pointer;
}

.nav-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: none;
  flex-direction: column;
}

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

.nav-menu li a {
  display: block;
  padding: 0.5rem 0;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-menu li a:hover,
.nav-menu li a:focus {
  color: var(--color-accent);
}

@media (min-width: 640px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    max-width: var(--max-width);
    margin: 0 auto;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .nav-menu {
    display: flex !important;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.25rem 1.25rem;
  }

  .nav-menu li a {
    padding: 0.5rem 0;
  }
}

/* Sections as cards */

.section {
  scroll-margin-top: 4.5rem;
  margin-top: 1.5rem;
}

.section.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 2rem 1.75rem;
}

.section h2 {
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
}

.section-intro {
  margin: -0.5rem 0 1.5rem;
  color: var(--color-muted);
}

.experience-item,
.project-item,
.app-item,
.education-item {
  margin-bottom: 1.75rem;
}

.experience-item:last-child,
.project-item:last-child,
.app-item:last-child,
.education-item:last-child {
  margin-bottom: 0;
}

.experience-item h3,
.project-item h3,
.app-item h3,
.education-item h3 {
  margin: 0 0 0.15rem;
  font-size: 1.05rem;
}

.meta {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.experience-item ul,
.project-item ul {
  margin: 0;
  padding-left: 1.25rem;
}

.experience-item li,
.project-item li {
  margin-bottom: 0.4rem;
}

/* Writing */

.writing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.writing-grid a.writing-card:first-child {
  grid-column: 1 / -1;
}

.writing-card {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  border-radius: calc(var(--radius) - 6px);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.writing-card:hover,
.writing-card:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent);
  text-decoration: none;
}

.writing-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.6rem;
}

.writing-tag {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.writing-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  color: var(--color-text);
}

.writing-card p {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  color: var(--color-muted);
  flex-grow: 1;
}

.writing-footer {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
}

.writing-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
}

.writing-meta {
  font-size: 0.78rem;
  color: var(--color-muted);
  white-space: nowrap;
}

/* Skills */

.skills-group {
  margin-bottom: 1.5rem;
}

.skills-group:last-child {
  margin-bottom: 0;
}

.skills-group h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
}

.skills-blurb {
  margin: 0 0 0.6rem;
  font-size: 0.88rem;
  color: var(--color-muted);
}

.skills-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.skills-list li {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 500;
}

.awards-list {
  margin: 0;
  padding-left: 1.25rem;
}

.awards-list li {
  margin-bottom: 0.5rem;
}

/* Footer */

.site-footer {
  max-width: var(--max-width);
  margin: 2rem auto 0;
  padding: 1.5rem 1.25rem 3rem;
  text-align: center;
}

.site-footer .contact-links {
  margin-bottom: 0.75rem;
}

.copyright {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-muted);
}