* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: #05070c;
  color: #e5e7eb;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

a {
  color: #60a5fa;
  text-decoration: none;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 0 20px;
}

.topbar {
  display: flex;
  justify-content: flex-end;
  padding: 15px 25px;
}

.lang-switch button {
  background: transparent;
  border: 1px solid #2563eb;
  color: #fff;
  padding: 6px 12px;
  margin-left: 6px;
  border-radius: 6px;
  cursor: pointer;
}

.lang-switch button:hover {
  background: #2563eb;
}

.hero {
  padding: 70px 20px 90px;
  background: radial-gradient(circle at top, #0b1a3a, #05070c);
  min-height: 100svh;
  min-height: 100vh;
}

.hero-profile {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 25px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.profile-pic {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #2563eb;
  box-shadow: 0 0 25px rgba(37, 99, 235, 0.4);
}

.hero-text {
  max-width: 600px;
}

.hero-text h1 {
  font-size: 3rem;
  margin-bottom: 8px;
}

.hero-text p {
  color: #9ca3af;
}

.actions {
  text-align: center;
}

.btn {
  display: inline-block;
  margin: 6px;
  padding: 12px 22px;
  border-radius: 10px;
  background: #2563eb;
  color: #fff;
  transition: background 0.2s ease;
}

@media (hover: hover) {
  .btn:hover {
    background: #1d4ed8;
    transform: scale(1.05);
  }
}

.section {
  padding: 80px 20px;
}

.section.dark {
  background: #0b1220;
}

h2 {
  margin-bottom: 20px;
  font-size: 2rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: #111827;
  padding: 25px;
  border-radius: 14px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.card h3 {
  margin-bottom: 10px;
}

.footer {
  text-align: center;
  padding: 40px;
  color: #9ca3af;
}

.footer .privacy {
  font-size: 12px;
  opacity: 0.6;
  margin-top: 6px;
}

.contact-info p {
  margin: 0.5rem 0;
  font-size: 1rem;
}

.contact-info a:hover {
  text-decoration: underline;
}

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  background: rgba(37, 99, 235, 0.9);
  color: #fff;
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  will-change: transform, opacity;
}

.back-to-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .hero-profile {
    flex-direction: column;
    text-align: center;
  }

  .hero-text {
    max-width: 100%;
  }
}

@media (max-width: 600px) {
  .hero-text h1 {
    font-size: 2.2rem;
  }

  .profile-pic {
    width: 110px;
    height: 110px;
  }
}