.section-title {
  font-size: var(--h2);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.hero-subtitle{
  font-size: var(--sub);
  line-height: 1.5;
  color: var(--muted);
  margin: 0 0 28px;
  font-weight: 500;
  max-width: 52ch;
}

/* Przyciski */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 14px 26px;
  border-radius: 999px;

  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.2px;

  text-decoration: none;
  white-space: nowrap;

  cursor: pointer;
  overflow: hidden;

  transition:
    transform 0.35s ease,
    box-shadow 0.35s ease,
    background 0.35s ease,
    border-color 0.35s ease;
}

.btn span {
  position: relative;
  z-index: 2;
}

.btn-primary {
  color: #001418;

  background: rgba(77,240,255,0.95);
  border: 1px solid transparent;

  box-shadow:
    0 12px 30px rgba(77,240,255,0.25),
    inset 0 1px 0 rgba(255,255,255,0.6);
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: -40%;

  background: radial-gradient(
    circle at center,
    rgba(255,255,255,0.65),
    transparent 60%
  );

  opacity: 0.35;
  transition: opacity 0.35s ease;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow:
    0 18px 46px rgba(77,240,255,0.45),
    inset 0 1px 0 rgba(255,255,255,0.8);
}

.btn-primary:hover::before {
  opacity: 0.55;
}

.btn-secondary {
  color: rgba(255,255,255,0.85);

  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);

  border: 1px solid rgba(77,240,255,0.35);

  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.25),
    0 6px 18px rgba(0,0,0,0.35);
}

.btn-secondary::before {
  content: "";
  position: absolute;
  inset: -40%;

  background: radial-gradient(
    circle at center,
    rgba(77,240,255,0.45),
    transparent 65%
  );

  opacity: 0;
  transition: opacity 0.35s ease;
}

.btn-secondary:hover {
  transform: translateY(-1px);
  color: rgba(255,255,255,0.85);

  background: rgba(77,240,255,0.12);
  border-color: rgba(77,240,255,0.55);

  box-shadow:
    0 14px 36px rgba(77,240,255,0.25),
    inset 0 1px 0 rgba(255,255,255,0.45);
}

.btn-secondary:hover::before {
  opacity: 0.4;
}

.btn:active {
  transform: translateY(0);
  box-shadow: none;
}

@media (max-width: 768px) {
  .btn {
    padding: 14px 22px;
    font-size: 15px;
  }
}

/* Karty */

.card{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: rgba(255,255,255,0.02);
}

.card h3{
  margin: 0 0 10px;
  font-size: 16px;
  line-height: 1.3;
  color: var(--text);
}