/* ─── Nav ─── */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  gap: var(--space-4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex-shrink: 1;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-logo {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  flex-shrink: 0;
  transition: opacity var(--transition);
}

.nav-logo:hover {
  opacity: 0.7;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

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

.nav-links a[aria-current="page"]::after {
  content: '';
  position: absolute;
  bottom: 5px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 1px;
  background: var(--color-text);
}

/* ─── Footer / Social bar ─── */

.site-footer {
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-border-subtle);
  margin-top: var(--space-24);
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: color var(--transition), background var(--transition);
}

.social-link:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.social-link svg {
  width: 18px;
  height: 18px;
}

/* ─── Hero ─── */

.hero {
  padding-top: var(--space-24);
  padding-bottom: var(--space-20);
}

.hero-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-10);
}

.hero-text {
  flex: 1;
  min-width: 0;
}

.hero-portrait {
  flex-shrink: 0;
}

.hero-portrait img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  object-position: top center;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  filter: grayscale(20%);
}

.hero-name {
  font-size: clamp(var(--text-4xl), 8vw, var(--text-5xl));
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: var(--leading-tight);
  color: var(--color-text);
  margin-bottom: var(--space-5);
}

.hero-meta {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.hero-tagline {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  color: var(--color-text);
  font-weight: 500;
  transition: gap var(--transition);
}

.hero-cta:hover {
  gap: var(--space-3);
}

/* ─── Page header ─── */

.page-header {
  padding-top: var(--space-16);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-border-subtle);
  margin-bottom: var(--space-16);
}

.page-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.page-desc {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 480px;
  line-height: var(--leading-relaxed);
}

/* ─── Project card ─── */

.project-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.project-card {
  display: block;
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
  margin-inline: calc(var(--space-6) * -1);
}

.project-card:hover {
  background: var(--color-surface);
  border-color: var(--color-border);
}

.project-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-2);
}

.project-title {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.project-links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.project-link:hover {
  color: var(--color-text);
}

.project-link svg {
  width: 14px;
  height: 14px;
}

.project-summary {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

/* ─── Experience card ─── */

.experience-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

.experience-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-6);
}

.experience-period {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}

.experience-company {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-1);
}

.experience-role {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.experience-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.experience-highlights li {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  padding-left: var(--space-4);
  position: relative;
}

.experience-highlights li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

/* ─── Skills grid ─── */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-8);
}

.skills-group-label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

/* ─── Articles placeholder ─── */

.articles-placeholder {
  padding: var(--space-16) 0;
}

.articles-placeholder-title {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.articles-placeholder-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 360px;
  line-height: var(--leading-relaxed);
}

/* ─── About ─── */

.about-intro {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.about-intro strong {
  color: var(--color-text);
  font-weight: 500;
}

/* ─── Loading / empty states ─── */

.loading {
  padding: var(--space-12) 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.empty-state {
  padding: var(--space-12) 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}