:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-hover: #283548;
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --primary: #38bdf8;
  --primary-dark: #0284c7;
  --border: #334155;
  --radius: 12px;
}

body.light {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-hover: #f1f5f9;
  --text: #0f172a;
  --text-muted: #475569;
  --primary: #0284c7;
  --primary-dark: #0369a1;
  --border: #e2e8f0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background 0.2s, color 0.2s;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 14px; }

/* Nawigacja */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 58px;
  gap: 8px;
}
.logo {
  font-weight: 800;
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  white-space: nowrap;
}
.logo span { color: var(--primary); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.theme-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 8px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
}

/* Hero i wyszukiwarka */
.hero { text-align: center; padding: 32px 0 20px; }
.hero h1 { font-size: 1.75rem; margin-bottom: 10px; line-height: 1.25; }
.hero p { color: var(--text-muted); max-width: 600px; margin: 0 auto 20px; font-size: 0.95rem; }
.search-box {
  width: 100%;
  max-width: 520px;
  padding: 13px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
  outline: none;
}
.search-box:focus { border-color: var(--primary); }

/* Sekcje i kafelki */
.section-title {
  font-size: 1.2rem;
  margin: 26px 0 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.15s, border-color 0.15s;
}
.card:hover { transform: translateY(-2px); border-color: var(--primary); }
.card-tag {
  display: inline-block;
  width: fit-content;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(56, 189, 248, 0.15);
  color: var(--primary);
}
.card h3 { font-size: 1.05rem; }
.card p { font-size: 0.88rem; color: var(--text-muted); }

/* Miejsce na reklamy */
.ad-slot {
  margin: 20px 0;
  padding: 12px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Formularze narzędzi */
.tool-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin: 18px 0;
}
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 0.9rem; margin-bottom: 5px; font-weight: 500; }
.form-control {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
}
.btn {
  display: inline-block;
  background: var(--primary);
  color: #0f172a;
  font-weight: 700;
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
  text-decoration: none;
  text-align: center;
}
.btn:hover { background: var(--primary-dark); color: #fff; }

footer {
  margin-top: 48px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}