:root {
  --green: #355b50;
  --green-soft: #4d7a6d;
  --ink: #111111;
  --bg: #f4f6f5;
  --card: #ffffff;
  --muted: #5b6560;
  --font: 'Satoshi', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 720px;
  background: var(--card);
  border-radius: 28px;
  padding: 48px;
  box-shadow: 0 24px 60px rgba(17, 17, 17, 0.08);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 40px;
}

.brand {
  display: inline-flex;
}

.logo {
  display: block;
  height: 48px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-link {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
  text-decoration: none;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--green);
}

/* language toggle */
.lang-toggle {
  display: inline-flex;
  background: rgba(17, 17, 17, 0.06);
  border-radius: 999px;
  padding: 3px;
}

.lang-toggle button {
  font-family: var(--font);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 999px;
  padding: 5px 12px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.lang-toggle button:hover {
  color: var(--ink);
}

.lang-toggle button.active {
  background: var(--green);
  color: #fff;
}

.lang-toggle button:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

.hero {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.photo {
  flex: 0 0 auto;
  width: 180px;
  height: 240px;
  object-fit: cover;
  border-radius: 20px;
  box-shadow: 0 12px 30px rgba(17, 17, 17, 0.12);
}

.intro h1 {
  margin: 0 0 12px;
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.intro p {
  margin: 0 0 14px;
  color: var(--muted);
  font-weight: 500;
}

.intro strong {
  color: var(--green);
  font-weight: 700;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 32px 0 0;
}

.chips li {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--green);
  background: rgba(53, 91, 80, 0.08);
  border-radius: 999px;
  padding: 6px 14px;
}

/* about page */
.about h1 {
  margin: 0 0 16px;
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.about .lead {
  margin: 0 0 8px;
  color: var(--muted);
  font-weight: 500;
  font-size: 1.05rem;
}

.about .lead strong { color: var(--green); font-weight: 700; }

.section-title {
  margin: 36px 0 12px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--green);
}

.details {
  margin: 0;
  border-top: 1px solid rgba(17, 17, 17, 0.08);
}

.details .row {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(17, 17, 17, 0.08);
}

.details dt {
  flex: 0 0 130px;
  color: var(--muted);
  font-weight: 500;
}

.details dd {
  margin: 0;
  font-weight: 700;
}

.details a {
  color: var(--green);
  text-decoration: none;
  font-weight: 700;
}

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

.back {
  margin-top: 28px;
  font-weight: 700;
}

.back a {
  color: var(--green);
  text-decoration: none;
}

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

.contact {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid rgba(17, 17, 17, 0.08);
  display: flex;
  gap: 12px;
  align-items: center;
  font-weight: 700;
}

.contact a {
  color: var(--green);
  text-decoration: none;
}

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

.contact span {
  color: rgba(17, 17, 17, 0.25);
}

@media (max-width: 560px) {
  .card { padding: 32px 24px; border-radius: 24px; }
  .topbar { flex-direction: column; align-items: flex-start; gap: 14px; }
  .hero { flex-direction: column; align-items: center; text-align: center; }
  .photo { width: 160px; height: 200px; }
  .intro h1 { font-size: 1.6rem; }
  .chips { justify-content: center; }
  .contact { justify-content: center; flex-wrap: wrap; }
  .details .row { flex-direction: column; gap: 2px; }
  .details dt { flex-basis: auto; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}