:root {
  --bg: #f4f7f8;
  --surface: #ffffff;
  --surface-2: #ecf2f3;
  --text: #1d2528;
  --muted: #516065;
  --accent: #0f766e;
  --accent-strong: #0a5b55;
  --border: #d6e0e3;
  --shadow: 0 10px 30px rgba(15, 43, 47, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Manrope', system-ui, -apple-system, sans-serif;
  background:
    radial-gradient(circle at 10% -20%, #dff2ef 0%, transparent 38%),
    radial-gradient(circle at 90% 0%, #d4e9f3 0%, transparent 34%),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.2;
  margin-top: 0;
}

a { color: inherit; }
.hidden { display: none !important; }

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 1000;
}

.skip-link:focus {
  top: 1rem;
  background: var(--surface);
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  outline: 2px solid var(--accent);
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(8px);
  background: rgba(244, 247, 248, 0.85);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  margin: 0;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--text);
}

.brand:hover { color: var(--accent); }

.brand:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 0.25rem;
}

.nav-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 1.1rem;
  font-size: 0.95rem;
}

.nav-list a {
  text-decoration: none;
  color: var(--muted);
}

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

.nav-list a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 0.25rem;
}

.lang-switch {
  display: flex;
  gap: 0.3rem;
}

.lang-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  border-radius: 0.5rem;
  padding: 0.35rem 0.6rem;
  font-weight: 700;
  cursor: pointer;
  font-size: 0.85rem;
}

.lang-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.lang-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.lang-btn.is-active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.hero { padding: 5rem 0 3.5rem; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2rem;
  align-items: start;
}

.eyebrow {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-strong);
}

h1 {
  margin: 0.4rem 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.headline {
  margin: 0;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  color: var(--muted);
}

.lead { max-width: 64ch; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.3rem;
}

.btn {
  text-decoration: none;
  padding: 0.65rem 1rem;
  border-radius: 0.7rem;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.95rem;
  display: inline-block;
}

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

.btn-primary:hover,
.btn-primary:focus-visible { background: var(--accent-strong); }

.btn-ghost {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-ghost:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.hero-card,
.card,
.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.hero-card { padding: 1.2rem; }
.hero-card h2 { font-size: 1rem; margin-bottom: 0.5rem; }
.hero-card ul { margin: 0; padding-left: 1.1rem; }

.section { padding: 3rem 0; }

.alt {
  background: linear-gradient(180deg, rgba(236, 242, 243, 0.55), rgba(236, 242, 243, 0.15));
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.card { padding: 1.2rem; }

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

.skill-group { padding: 1.2rem; }
.skill-group ul { margin: 0; padding-left: 1rem; }

.cert-list {
  margin: 0;
  padding-left: 1.1rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 3rem;
  align-items: start;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.stat-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--muted);
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.2rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.contact-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(15, 118, 110, 0.15);
}

.contact-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.contact-icon {
  width: 22px;
  height: 22px;
  color: var(--accent);
  margin-bottom: 0.4rem;
  flex-shrink: 0;
}

.contact-card-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent);
}

.contact-card-value {
  font-size: 0.95rem;
  color: var(--text);
}

.site-footer { padding: 1.5rem 0 2rem; }

.footer-wrap {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-stats { flex-direction: row; flex-wrap: wrap; gap: 1.5rem 2.5rem; }
  .contact-cards { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .nav-wrap {
    flex-wrap: wrap;
    min-height: 56px;
    padding: 0.75rem 0;
    gap: 0.5rem;
    align-items: center;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  #main-nav {
    display: none;
    width: 100%;
    order: 10;
    padding-bottom: 0.5rem;
  }

  #main-nav.is-open {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    gap: 0.6rem;
  }

  .lang-switch { order: 5; }

  .hero { padding-top: 3rem; }
}

@media (max-width: 600px) {
  .cards { grid-template-columns: 1fr; }
}