:root {
  --bg-1: #0f1020;
  --bg-2: #191a31;
  --text: #f8f9ff;
  --muted: #b4b7d8;
  --card: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.15);
  --accent: #91a1ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text);
}

.theme-bg {
  background: radial-gradient(circle at top, #2e3266 0%, var(--bg-1) 45%, #090a12 100%);
}

.linktree,
.portfolio-page {
  width: min(760px, 92vw);
  margin: 0 auto;
  padding: 3rem 0 4rem;
}

.profile {
  text-align: center;
  margin-bottom: 2rem;
}

.avatar {
  width: 86px;
  height: 86px;
  border-radius: 50%;
  margin: 0 auto 1rem;
  display: grid;
  place-items: center;
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(145deg, #5160cf, #7e8dff);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.profile h1,
.portfolio-header h1 {
  margin: 0;
}

.profile p,
.portfolio-header p {
  margin-top: 0.5rem;
  color: var(--muted);
}

.links {
  display: grid;
  gap: 0.85rem;
}

.link-btn {
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 0.85rem;
  padding: 1rem 1.2rem;
  text-align: center;
  font-weight: 600;
  backdrop-filter: blur(6px);
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.link-btn:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.link-btn.secondary {
  background: rgba(145, 161, 255, 0.2);
}

.portfolio-header {
  text-align: center;
  margin-bottom: 2rem;
}

.tag {
  display: inline-block;
  margin: 0;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  background: rgba(145, 161, 255, 0.18);
  border: 1px solid var(--line);
  font-size: 0.85rem;
  color: #d8ddff;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.card {
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--card);
  padding: 1rem;
}

.card h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.card p {
  color: var(--muted);
}

.card a,
.back-link {
  color: #dce2ff;
  font-weight: 600;
}

footer {
  text-align: center;
  margin-top: 2rem;
}