/* ============================================================
   Component: Form
   c-form / c-field / c-input — フォーム要素
   ============================================================ */

.c-form {
  display: grid;
  gap: var(--spacing-md);
}

/* --- Field --- */

.c-field {
  display: grid;
  gap: var(--spacing-xs);
}

.c-field[hidden] {
  display: none;
}

.c-field--horizontal {
  grid-template-columns: 180px minmax(0, 1fr);
  align-items: start;
  column-gap: var(--spacing-lg);
}

.c-field__label {
  font-weight: var(--font-weight-bold);
}

.c-field--horizontal > .c-field__label {
  padding-top: var(--spacing-sm);
}

.c-field__control {
  display: grid;
  gap: var(--spacing-xs);
  min-width: 0;
}

.c-field__help {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* --- Input / Select / Textarea --- */

.c-input,
.c-select,
.c-textarea {
  width: 100%;
  min-height: 42px;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--color-bg-input);
  font-family: inherit;
  font-size: inherit;
}

.c-textarea {
  min-height: 104px;
  resize: vertical;
}

/* --- Radio Group --- */

.c-radio-group {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--spacing-sm);
  align-items: center;
}

.c-radio {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  min-height: 42px;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  background: var(--color-bg-input);
  font-weight: var(--font-weight-bold);
  white-space: nowrap;
}

.c-checkbox {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  min-height: 42px;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  background: var(--color-bg-input);
  font-weight: var(--font-weight-bold);
  white-space: nowrap;
  cursor: pointer;
}

/* --- Color Picker --- */

.c-color-control {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.c-color-picker {
  width: 52px;
  height: 42px;
  padding: var(--spacing-xs);
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--color-bg-input);
  cursor: pointer;
}

.c-color-picker::-webkit-color-swatch-wrapper { padding: 0; }
.c-color-picker::-webkit-color-swatch { border: 0; border-radius: var(--radius-sm); }
.c-color-picker::-moz-color-swatch { border: 0; border-radius: var(--radius-sm); }

.c-color-value {
  max-width: 148px;
  text-transform: uppercase;
}

/* --- File Input (visually hidden) --- */

.c-file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip: rect(0 0 0 0);
  overflow: hidden;
  white-space: nowrap;
}

/* --- Responsive --- */

@media (max-width: 760px) {
  .c-field--horizontal {
    grid-template-columns: 1fr;
  }

  .c-field--horizontal > .c-field__label {
    padding-top: 0;
  }
}