.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 52px;
  padding: 0 28px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 900;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
  line-height: 1;
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--red), var(--red-2));
  color: var(--white);
  box-shadow: 0 18px 35px rgba(139,0,0,0.24);
}
.btn-primary:hover {
  box-shadow: 0 22px 46px rgba(139,0,0,0.32);
  color: var(--white);
}

.btn-ghost {
  border-color: rgba(255,255,255,0.22);
  color: var(--white);
  background: rgba(255,255,255,0.05);
}
.btn-ghost:hover { background: rgba(255,255,255,0.1); color: var(--white); }

.btn-dark {
  background: var(--ink);
  color: var(--white);
}
.btn-dark:hover { background: var(--ink-2); color: var(--white); }

.btn-outline {
  border-color: var(--line);
  color: var(--ink);
  background: transparent;
}
.btn-outline:hover { border-color: var(--red); color: var(--red); }

.btn-white {
  background: var(--white);
  color: var(--ink);
}
.btn-white:hover { background: var(--paper-2); color: var(--ink); }

.btn-outline-white {
  border-color: rgba(255,255,255,0.3);
  color: var(--white);
  background: transparent;
}
.btn-outline-white:hover { background: rgba(255,255,255,0.1); color: var(--white); }

.btn-sm { min-height: 42px; padding: 0 20px; font-size: 0.82rem; }
.btn-lg { min-height: 58px; padding: 0 36px; font-size: 1rem; }