:root {
  --bg: #0f1115;
  --surface: #171a21;
  --text: #e6e8ec;
  --muted: #9aa3b2;
  --accent: #5eead4;
  --border: #262b36;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.nav, main, footer {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Nawigacja */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  padding-bottom: 24px;
}
.logo { color: var(--text); font-weight: 700; text-decoration: none; }
.nav nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 20px;
}
.nav nav a:hover { color: var(--text); }

/* Sekcje */
section { padding: 48px 0; }
h2 { font-size: 1.6rem; margin: 0 0 20px; }

/* Hero */
.hero { padding: 80px 0 64px; }
.eyebrow { color: var(--accent); margin: 0; font-weight: 600; }
.hero h1 { font-size: 3rem; margin: 4px 0 12px; line-height: 1.1; }
.lead { color: var(--muted); font-size: 1.15rem; max-width: 55ch; margin: 0 0 28px; }

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  text-decoration: none;
}
.btn:hover { opacity: .9; }

/* Projekty */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}
.card {
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 { margin: 0 0 8px; }
.card p { margin: 0 0 14px; color: var(--muted); }

.tags { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.tags li {
  font-size: .8rem;
  padding: 2px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
}

footer { padding: 32px 16px 40px; color: var(--muted); font-size: .85rem; }

/* Telefon */
@media (max-width: 600px) {
  .hero h1 { font-size: 2.2rem; }
  .nav nav a { margin-left: 12px; font-size: .9rem; }
}