:root {
  --bg: #f7f6f3;
  --bg-elevated: #ffffff;
  --text: #1c1917;
  --muted: #57534e;
  --accent: #1d4ed8;
  --accent-soft: #eff6ff;
  --border: #e7e5e4;
  --max: 960px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #f7f6f3f2;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: 6px;
  padding: 6px 10px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.88rem;
  text-decoration: none;
}

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

.lang-switch {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-elevated);
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 6px 10px;
  cursor: pointer;
}

.lang-btn[aria-pressed="true"] {
  background: var(--text);
  color: #fff;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 20px 72px;
}

.hero {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  align-items: start;
  padding: 40px 0 28px;
}

.hero-photo {
  width: 140px;
  height: 140px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-elevated);
  overflow: hidden;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 8px;
}

.hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  line-height: 1.15;
  margin: 0 0 14px;
  font-weight: 700;
}

.lead {
  color: var(--muted);
  font-size: 1.02rem;
  margin: 0 0 24px;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  text-decoration: none;
  background: #1e40af;
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover,
.btn-small:hover {
  text-decoration: none;
  border-color: #d6d3d1;
}

.btn-small {
  padding: 8px 14px;
  font-size: 0.85rem;
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
}

.section {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.section h2 {
  margin: 0 0 22px;
  font-size: 1.28rem;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}

.metric-card,
.card,
.project-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

.metric-value {
  display: block;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}

.metric-label {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.88rem;
}

.cards {
  display: grid;
  gap: 14px;
}

.card h3,
.project-card h3 {
  margin: 0 0 4px;
  font-size: 1.05rem;
}

.card-meta {
  color: var(--accent);
  font-size: 0.85rem;
  margin: 0 0 10px;
}

.card p,
.project-card p {
  margin: 0;
}

.card ul,
.about-list {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.card li + li,
.about-list li + li {
  margin-top: 6px;
}

.project-header {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.badge {
  font-size: 0.72rem;
  font-weight: 650;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid #dbeafe;
}

.tech-tags {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 10px 0 0 !important;
}

.project-links {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.muted {
  color: var(--muted);
  font-size: 0.88rem;
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
}

.skill-grid > div {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
}

.skill-grid h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.skill-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.about-list {
  margin-top: 16px;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--border);
}

.timeline li {
  position: relative;
  padding: 0 0 28px 22px;
}

.timeline li:last-child {
  padding-bottom: 0;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

.tl-date {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 4px;
}

.timeline h3 {
  margin: 0 0 6px;
  font-size: 1.02rem;
}

.timeline p {
  margin: 0;
  color: var(--muted);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
}

.contact-list li + li {
  margin-top: 8px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 22px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 720px) {
  .nav {
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    justify-content: flex-start;
    width: 100%;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 24px;
  }

  .hero-photo {
    width: 96px;
    height: 96px;
  }
}