.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding-inline: 14px;
  padding-block: 9px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background var(--transition-med), color var(--transition-med), border-color var(--transition-med), box-shadow var(--transition-med);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #2e946b, #1f7a5f);
  color: #fff;
  box-shadow: 0 10px 30px rgba(31, 122, 95, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 12px 36px rgba(31, 122, 95, 0.35);
}

.btn-ghost {
  background: #ffffff;
  color: #111827;
  border-color: var(--color-border-subtle);
}

.btn-ghost:hover {
  background: #f9fafb;
}

.btn-secondary {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.btn-full {
  width: 100%;
}

.btn-small {
  padding-block: 6px;
  padding-inline: 10px;
  font-size: 0.8rem;
}

.icon-btn {
  border-radius: 999px;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border-subtle);
  background: #ffffff;
  font-size: 0.9rem;
}

.icon-btn[aria-pressed="true"] {
  background: #fee2e2;
  border-color: #fecaca;
}

.fab {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2e946b, #1f7a5f);
  color: #fff;
  font-size: 1.6rem;
  box-shadow: 0 10px 30px rgba(31, 122, 95, 0.25);
}

.fab:hover {
  box-shadow: 0 14px 36px rgba(31, 122, 95, 0.35);
}