:root {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --primary: #38bdf8;
  --primary-dark: #0ea5e9;
  --white: #ffffff;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  background: #020617;
  color: var(--text);
  line-height: 1.6;
}

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

.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #020617, #0f172a, #1e293b);
  padding: 24px;
}

.nav {
  max-width: 1100px;
  margin: 0 auto 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--white);
}

.nav ul {
  display: flex;
  gap: 20px;
  list-style: none;
}

.nav a {
  color: var(--text);
  transition: 0.2s;
}

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

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  padding-top: 40px;
}

.avatar {
  width: 170px;
  height: 170px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.hero-content h1 {
  font-size: 46px;
  margin-bottom: 16px;
}

.hero-content h1 span {
  color: var(--primary);
}

.subtitle {
  max-width: 700px;
  margin: 0 auto 28px;
  color: var(--muted);
  font-size: 18px;
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  color: var(--white);
  transition: 0.2s;
  cursor: pointer;
  background: transparent;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #00111a;
  font-weight: 700;
}

.btn.primary:hover {
  background: var(--primary-dark);
}

.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px;
}

.section h2 {
  text-align: center;
  margin-bottom: 24px;
  font-size: 34px;
}

.section p {
  text-align: center;
  color: var(--muted);
  max-width: 800px;
  margin: 0 auto;
}

.alt {
  background: #0b1220;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.cards {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card {
  background: var(--card);
  padding: 24px;
  border-radius: 18px;
  box-shadow: var(--shadow);
  transition: 0.2s;
}

.card:hover {
  transform: translateY(-4px);
}

.card h3 {
  margin-bottom: 12px;
  color: var(--white);
}

.card p {
  text-align: left;
  margin: 0;
}

.project {
  border: 1px solid rgba(56, 189, 248, 0.18);
}

.msg {
  margin-top: 16px;
  text-align: center;
  color: var(--white);
  font-weight: 700;
}

.footer {
  text-align: center;
  padding: 24px;
  color: var(--muted);
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
  }

  .nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-content h1 {
    font-size: 34px;
  }

  .cards {
    grid-template-columns: 1fr;
  }
}