:root {
  --bg: #07010f;
  --bg-soft: #120025;
  --text: #f4ecff;
  --muted: #b9a6d3;
  --cyan: #22d3ee;
  --pink: #ff3ea5;
  --violet: #8b5cf6;
}

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

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

body {
  font-family: "Space Grotesk", sans-serif;
  background: radial-gradient(circle at 10% 10%, #1d0436 0%, var(--bg) 45%);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

.background-glow {
  position: fixed;
  inset: -20vmax;
  background:
    radial-gradient(circle at 20% 25%, rgb(34 211 238 / 18%) 0, transparent 40%),
    radial-gradient(circle at 75% 20%, rgb(255 62 165 / 18%) 0, transparent 42%),
    radial-gradient(circle at 55% 75%, rgb(139 92 246 / 20%) 0, transparent 45%);
  filter: blur(14px);
  z-index: -1;
}

.header {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  backdrop-filter: blur(14px);
  background: rgb(7 1 15 / 62%);
  border-bottom: 1px solid rgb(139 92 246 / 28%);
}

.logo {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-shadow: 0 0 10px rgb(139 92 246 / 90%);
}

.nav {
  display: flex;
  gap: 1rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

.nav a:hover {
  color: var(--cyan);
  text-shadow: 0 0 12px rgb(34 211 238 / 90%);
}

main {
  width: min(980px, calc(100% - 2.5rem));
  margin: 2rem auto 3rem;
  display: grid;
  gap: 1.25rem;
}

.hero {
  padding: 2.3rem;
  border-radius: 22px;
  background: linear-gradient(135deg, rgb(20 3 42 / 88%), rgb(8 1 19 / 88%));
  border: 1px solid rgb(139 92 246 / 35%);
  box-shadow:
    0 0 18px rgb(139 92 246 / 24%),
    0 0 36px rgb(255 62 165 / 12%);
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgb(34 211 238 / 48%);
  color: var(--cyan);
  letter-spacing: 0.04em;
  font-size: 0.9rem;
  margin: 0 0 0.9rem;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.2;
}

h1 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  margin-bottom: 0.85rem;
  text-shadow: 0 0 16px rgb(255 62 165 / 35%);
}

.subtitle {
  margin: 0 0 1.25rem;
  color: var(--muted);
  max-width: 62ch;
}

.accent {
  color: var(--pink);
  text-shadow: 0 0 10px rgb(255 62 165 / 90%);
}

.hero-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  padding: 0.64rem 1.2rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 500;
  transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #10061d;
  background: linear-gradient(120deg, var(--cyan), #7ef4ff);
  box-shadow: 0 0 16px rgb(34 211 238 / 55%);
}

.btn-secondary {
  color: var(--text);
  border: 1px solid rgb(255 62 165 / 48%);
  box-shadow: inset 0 0 16px rgb(255 62 165 / 12%);
}

.card {
  border-radius: 18px;
  padding: 1.35rem 1.2rem;
  background: rgb(13 2 27 / 76%);
  border: 1px solid rgb(139 92 246 / 30%);
  box-shadow: 0 0 18px rgb(139 92 246 / 14%);
}

.skill-grid,
.contacts {
  padding-left: 1.2rem;
  margin: 0;
  color: var(--muted);
}

.project-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.project-grid article {
  border: 1px solid rgb(34 211 238 / 24%);
  border-radius: 12px;
  padding: 0.9rem;
  background: linear-gradient(180deg, rgb(20 4 40 / 84%), rgb(10 2 21 / 84%));
}

.project-grid p {
  margin: 0;
  color: var(--muted);
}

a {
  color: var(--cyan);
}

.footer {
  text-align: center;
  color: var(--muted);
  margin: 1rem 0 2rem;
  font-size: 0.95rem;
}

@media (max-width: 680px) {
  .header {
    flex-direction: column;
    gap: 0.55rem;
  }

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

  main {
    width: min(980px, calc(100% - 1.25rem));
    margin-top: 1.2rem;
  }

  .hero {
    padding: 1.3rem;
  }
}