.btn {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-family);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  box-shadow: var(--shadow-button);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-gray-30);
}

.btn-secondary:hover {
  background-color: var(--color-gray-10);
  border-color: var(--color-gray-40);
}

.btn-success {
  background-color: var(--color-success);
  color: white;
}

.btn-success:hover {
  background-color: var(--color-success-hover);
}

.btn-danger {
  background-color: var(--color-danger);
  color: white;
}

.btn-danger:hover {
  background-color: var(--color-danger-hover);
}

.btn-ghost {
  background: none;
  box-shadow: none;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  color: var(--color-text-primary);
  background: var(--color-gray-10);
}

.btn--sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 13px;
}

.btn--locked {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn--full {
  width: 100%;
  justify-content: center;
}

.split-btn {
  display: inline-flex;
}

.split-btn form {
  display: contents;
}

.split-btn__main {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.split-btn__caret {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  border-left: 1px solid rgba(255, 255, 255, 0.35);
  padding: var(--space-xs) var(--space-sm);
  font-size: 10px;
}

.btn-secondary.split-btn__caret {
  border-left-color: var(--color-gray-30);
  margin-left: -1px;
}

.dropdown {
  position: relative;
  display: inline-flex;
}

.dropdown summary {
  list-style: none;
  cursor: pointer;
}

.dropdown summary::-webkit-details-marker {
  display: none;
}

.dropdown__menu {
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  z-index: 20;
  min-width: 260px;
  background: var(--color-surface);
  border: 1px solid var(--color-gray-30);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  padding: var(--space-xs) 0;
  text-align: left;
}

.dropdown__menu--fit {
  min-width: 0;
}

a.dropdown__item,
button.dropdown__item {
  display: block;
  padding: var(--space-xs) var(--space-md);
  white-space: nowrap;
  color: var(--color-text-primary);
  text-decoration: none;
}

button.dropdown__item {
  width: 100%;
  background: none;
  border: none;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.dropdown__item--danger {
  color: var(--color-danger);
}

a.dropdown__item:hover,
button.dropdown__item:hover {
  background: var(--color-gray-10);
}

.dropdown__item--form {
  display: flex;
  gap: var(--space-xs);
  align-items: center;
  padding: var(--space-xs) var(--space-md);
}