/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent);
  color: var(--stone-900);
}

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

.btn--secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}

.btn--secondary:hover {
  background: var(--stone-700);
}

.btn--ghost {
  color: var(--text-secondary);
}

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

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

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

.btn--sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.8125rem;
}

.btn--icon {
  padding: var(--space-xs);
  width: 32px;
  height: 32px;
}

/* Inputs */
.input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(201, 169, 110, 0.2);
}

.input::placeholder {
  color: var(--text-muted);
}

textarea.input {
  resize: vertical;
  min-height: 80px;
}

/* Select */
.select {
  appearance: none;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  padding-right: var(--space-xl);
  background: var(--bg-primary) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237d6a5b' stroke-width='1.5' fill='none'/%3E%3C/svg%3E") no-repeat right 12px center;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.select:focus {
  outline: none;
  border-color: var(--accent);
}

[data-theme="light"] .select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235e4f42' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
}

/* Checkbox */
.checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  cursor: pointer;
  user-select: none;
}

.checkbox__input {
  appearance: none;
  width: 18px;
  height: 18px;
  min-width: 18px;
  border: 1.5px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  position: relative;
  margin-top: 2px;
}

.checkbox__input:checked {
  background: var(--accent);
  border-color: var(--accent);
}

.checkbox__input:checked::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 5px;
  width: 5px;
  height: 9px;
  border: solid var(--stone-900);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox__input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.checkbox__label {
  font-size: 1rem;
  line-height: 1.5;
}

.checkbox__label--done {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* Tri-state step status indicator */
.step-status {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  user-select: none;
}

.step-status__indicator {
  appearance: none;
  width: 18px;
  height: 18px;
  min-width: 18px;
  border: 1.5px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  position: relative;
  margin-top: 2px;
  padding: 0;
}

.step-status__indicator:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Pending: empty box */
.step-status__indicator--pending {
  background: var(--bg-primary);
  border-color: var(--border-default);
}

/* In progress: diagonal half-fill (bottom-left filled, top-right empty) */
.step-status__indicator--in_progress {
  background: linear-gradient(to top right, var(--accent) 50%, var(--bg-primary) 50%);
  border-color: var(--accent);
}

/* Done: checkmark (same as old checkbox) */
.step-status__indicator--done {
  background: var(--accent);
  border-color: var(--accent);
}

.step-status__indicator--done::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 5px;
  width: 5px;
  height: 9px;
  border: solid var(--stone-900);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* Label variants */
.step-status__label {
  font-size: 1rem;
  line-height: 1.5;
}

.step-status__label--in_progress {
  color: var(--warning);
}

.step-status__label--done {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* Form groups */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group__label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
  padding: var(--space-lg);
}

.modal-overlay--visible {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px) scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay--visible .modal {
  transform: translateY(0) scale(1);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.modal__title {
  font-size: 1.125rem;
  font-weight: 600;
}

.modal__close {
  color: var(--text-muted);
  font-size: 1.25rem;
  padding: var(--space-xs);
}

.modal__close:hover {
  color: var(--text-primary);
}

.modal__body {
  padding: var(--space-lg);
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
}