*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --dark: #1a2332;
  --teal: #2d6b7a;
  --teal-light: #3d8b9a;
  --gray: #8a9bb0;
  --light: #e8edf2;
  --white: #f5f7fa;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--white);
  color: var(--dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Language nav */
.lang-nav {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 10;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--gray);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  transition: color 0.3s;
}

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

.lang-btn.active {
  color: var(--teal-light);
}

.lang-sep {
  color: var(--gray);
  opacity: 0.4;
  font-size: 0.85rem;
}

/* Hero */
.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  text-align: center;
}

.logo {
  max-width: min(400px, 80vw);
  height: auto;
  margin-bottom: 1.5rem;
  animation: fadeIn 1s ease;
}

.tagline {
  font-size: 1.15rem;
  color: #3a4a5c;
  letter-spacing: 0.04em;
  font-weight: 300;
  animation: fadeIn 1.2s ease;
}

.divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--teal), transparent);
  margin: 2.5rem 0;
  animation: fadeIn 1.4s ease;
}

/* Contact */
.contact {
  animation: fadeIn 1.6s ease;
}

.contact-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--gray);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.contact-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--dark);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.3s;
}

a.contact-item:hover {
  color: var(--teal-light);
}

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--teal);
}

/* Skyline */
.skyline {
  position: fixed;
  bottom: 1.8rem;
  left: 0;
  width: 100%;
  height: 22vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.35;
}

.hero,
.footer {
  position: relative;
  z-index: 1;
}

/* Footer */
.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  text-align: center;
  padding: 0.6rem 2rem;
  font-size: 0.75rem;
  color: var(--gray);
  opacity: 0.5;
  z-index: 2;
}

/* Animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 600px) {
  .hero {
    padding: 5rem 1.5rem 3rem;
  }

  .logo {
    max-width: 260px;
  }

  .tagline {
    font-size: 1rem;
  }

  .contact-grid {
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
  }

  .contact-item {
    font-size: 0.9rem;
  }

  .lang-nav {
    top: 1rem;
    right: 1rem;
  }

  .skyline {
    height: 18vh;
  }
}