html {
  color-scheme: light dark;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
}

main {
  display: block;
}

h1,
h2,
h3,
h4 {
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.4rem, 4vw, 4.75rem);
}

h2 {
  font-size: clamp(1.7rem, 2.5vw, 2.6rem);
}

h3 {
  font-size: 1.15rem;
}

ul {
  padding-left: 1.2rem;
}

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

button,
a,
input,
textarea,
select {
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

p,
li {
  color: var(--color-text-soft);
}

strong,
b,
th,
dt,
.footer-title,
.site-brand,
.hero-role,
.resume-subtitle {
  color: var(--color-text);
}

a {
  color: var(--color-accent);
}

a:hover,
a:focus-visible {
  color: var(--color-accent-strong);
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-accent) 55%, white);
  outline-offset: 3px;
}

::selection {
  background: color-mix(in srgb, var(--color-accent) 28%, white);
  color: var(--color-text);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: var(--color-inverse);
  border-radius: var(--radius-sm);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  border-bottom: var(--border-width) solid color-mix(in srgb, var(--color-border) 80%, transparent);
}

.header-shell,
.footer-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  min-height: 4.5rem;
  padding: var(--space-md) 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.site-brand {
  font-weight: 800;
  letter-spacing: -0.03em;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 2.5rem;
  padding: 0.65rem 0.9rem;
  border: var(--border-width) solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
}

.site-footer {
  border-top: var(--border-width) solid var(--color-border);
  padding: var(--space-lg) 0 var(--space-2xl);
  background: color-mix(in srgb, var(--color-surface) 65%, transparent);
}

.footer-title {
  font-weight: 800;
  margin-bottom: var(--space-2xs);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.card-grid,
.credentials-grid,
.stack-list,
.timeline,
.tag-cloud {
  display: grid;
  gap: var(--space-lg);
}

.card-grid {
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}

.credentials-grid {
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.compact-grid {
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
}

.two-column-grid {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.timeline-item ul,
.stack-list,
.stats-list {
  display: grid;
  gap: var(--space-sm);
}

.stats-list dt {
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stats-list dd {
  margin: 0;
}

@media (max-width: 720px) {
  .header-shell,
  .footer-shell {
    align-items: flex-start;
    flex-direction: column;
  }
}