/* ===========================================
   TAKAYASU Reform Form - Form Elements
   Minimal style
   =========================================== */

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

.form-group--inline {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-group--inline .form-group {
  margin-bottom: 0;
}

/* -- Label -- */
.form-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: var(--fw-medium);
  color: var(--color-brand-primary);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  position: relative;
  padding-left: 0;
}

.form-label .required {
  color: var(--color-brand-accent-dark);
  font-size: 0.625rem;
  margin-left: var(--space-xs);
  vertical-align: middle;
  font-weight: var(--fw-regular);
}

/* -- Text Input / Select / Textarea -- */
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 0;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  font-weight: var(--fw-regular);
  color: var(--color-text);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border-strong);
  border-radius: 0;
  transition: border-color var(--transition-base);
  appearance: none;
  -webkit-appearance: none;
  letter-spacing: 0.02em;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-bottom-color: var(--color-text-muted);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-bottom-color: var(--color-brand-primary);
  border-bottom-width: 1px;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-placeholder);
  font-weight: var(--fw-light);
}

.form-input[readonly] {
  color: var(--color-text-muted);
  cursor: default;
}

.form-textarea {
  min-height: 100px;
  padding: 14px 16px;
  resize: vertical;
  line-height: var(--lh-base);
  border: 1px solid var(--color-border-strong);
}

.form-textarea:focus {
  border: 1px solid var(--color-brand-primary);
}

/* -- Select -- */
.form-select {
  padding-right: 32px;
  padding-left: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%231A1A1A' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 4px center;
  cursor: pointer;
}

/* -- Date Input -- */
.form-input[type="date"] {
  cursor: pointer;
  padding: 14px 16px;
  border: 1px solid var(--color-border-strong);
}

.form-input[type="date"]:focus {
  border: 1px solid var(--color-brand-primary);
}

.form-input[type="date"]::-webkit-calendar-picker-indicator {
  filter: grayscale(1) opacity(0.5);
  cursor: pointer;
}

/* -- Radio Group -- */
.form-radio-group {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.form-radio-item {
  position: relative;
  display: flex;
  align-items: center;
  padding: 16px 4px;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  min-height: 52px;
}

.form-radio-item:hover {
  background: var(--color-surface-hover);
}

.form-radio-item.is-selected {
  background: transparent;
}

.form-radio-item input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

/* Custom Radio Dot */
.radio-indicator {
  width: 16px;
  height: 16px;
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  margin-right: 16px;
  flex-shrink: 0;
  position: relative;
  transition: border-color var(--transition-base);
}

.is-selected .radio-indicator {
  border-color: var(--color-brand-primary);
}

.radio-indicator::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 8px;
  height: 8px;
  background: var(--color-brand-primary);
  border-radius: 50%;
  transition: transform var(--transition-base);
}

.is-selected .radio-indicator::after {
  transform: translate(-50%, -50%) scale(1);
}

.form-radio-text {
  font-size: var(--fs-md);
  color: var(--color-text);
  line-height: var(--lh-tight);
  letter-spacing: 0.04em;
}

/* -- Card-style Checkbox -- */
.form-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.form-card-checkbox {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg) var(--space-sm);
  min-height: 72px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--card-radius);
  cursor: pointer;
  text-align: center;
  transition: border-color var(--transition-base), background-color var(--transition-fast);
}

.form-card-checkbox:hover {
  border-color: var(--color-text-muted);
  background: var(--color-surface-hover);
}

.form-card-checkbox.is-selected {
  border-color: var(--color-brand-primary);
  background: var(--color-brand-primary);
}

.form-card-checkbox.is-selected .form-card-checkbox__text {
  color: #ffffff;
}

.form-card-checkbox input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.form-card-checkbox__indicator {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 14px;
  height: 14px;
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  transition: all var(--transition-base);
  background: transparent;
}

.form-card-checkbox.is-selected .form-card-checkbox__indicator {
  border-color: #ffffff;
  background: #ffffff;
}

.form-card-checkbox__indicator::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 4px;
  width: 4px;
  height: 7px;
  border: solid var(--color-brand-primary);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg) scale(0);
  transition: transform var(--transition-base);
}

.form-card-checkbox.is-selected .form-card-checkbox__indicator::after {
  transform: rotate(45deg) scale(1);
}

.form-card-checkbox__text {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-regular);
  color: var(--color-text);
  line-height: var(--lh-tight);
  letter-spacing: 0.08em;
  word-break: keep-all;
  overflow-wrap: normal;
  white-space: nowrap;
  transition: color var(--transition-base);
}

.form-card-checkbox__text small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: var(--fw-light);
  color: var(--color-text-muted);
  margin-top: 4px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.form-card-checkbox.is-selected .form-card-checkbox__text small {
  color: rgba(255,255,255,0.7);
}

/* -- Inline Checkbox List -- */
.form-checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.form-checkbox-item {
  position: relative;
  display: flex;
  align-items: center;
  padding: 16px 4px;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  min-height: 52px;
}

.form-checkbox-item:hover {
  background: var(--color-surface-hover);
}

.form-checkbox-item input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

/* Custom Checkbox */
.checkbox-indicator {
  width: 16px;
  height: 16px;
  border: 1px solid var(--color-border-strong);
  border-radius: 2px;
  margin-right: 16px;
  flex-shrink: 0;
  position: relative;
  transition: border-color var(--transition-base), background-color var(--transition-base);
}

.is-selected .checkbox-indicator {
  border-color: var(--color-brand-primary);
  background: var(--color-brand-primary);
}

.checkbox-indicator::after {
  content: '';
  position: absolute;
  top: 1px;
  left: 4px;
  width: 4px;
  height: 8px;
  border: solid #fff;
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg) scale(0);
  transition: transform var(--transition-base);
}

.is-selected .checkbox-indicator::after {
  transform: rotate(45deg) scale(1);
}

.form-checkbox-text {
  font-size: var(--fs-md);
  color: var(--color-text);
  line-height: var(--lh-tight);
  letter-spacing: 0.04em;
}

/* -- Schedule Group -- */
.schedule-group {
  margin-bottom: var(--space-lg);
}

.schedule-group__label {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: var(--fw-medium);
  color: var(--color-text-muted);
  background: transparent;
  padding: 0;
  border: none;
  margin-bottom: var(--space-sm);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
}

.schedule-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* -- Error States -- */
.form-input.is-error,
.form-select.is-error,
.form-textarea.is-error {
  border-bottom-color: var(--color-error);
}

.form-textarea.is-error,
.form-input[type="date"].is-error {
  border-color: var(--color-error);
}

.form-error {
  display: block;
  font-size: 0.6875rem;
  color: var(--color-error);
  margin-top: var(--space-xs);
  padding-left: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  letter-spacing: 0.04em;
  transition: max-height var(--transition-base),
              opacity var(--transition-base),
              margin var(--transition-base);
}

.form-error.is-visible {
  max-height: 40px;
  opacity: 1;
  margin-top: var(--space-sm);
}

/* -- Postal Code Field Group -- */
.postal-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
}

.postal-group .form-input {
  flex: 1;
  max-width: 200px;
}

.postal-status {
  font-size: 0.6875rem;
  margin-top: var(--space-xs);
  padding-left: 0;
  min-height: 16px;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

/* -- Section Divider -- */
.form-divider {
  width: 100%;
  height: 1px;
  background: var(--color-border);
  margin: var(--space-2xl) 0;
}

/* -- Hint Text -- */
.form-hint {
  font-size: 0.6875rem;
  color: var(--color-text-placeholder);
  margin-top: var(--space-sm);
  padding-left: 0;
  letter-spacing: 0.06em;
  font-weight: var(--fw-light);
}

/* -- Privacy Policy Consent Checkbox -- */
.privacy-consent {
  background: transparent;
  border: none;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  padding: var(--space-lg) 0;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-xl);
}

.privacy-consent__label {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  user-select: none;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--color-text);
  letter-spacing: 0.04em;
}

.privacy-consent__checkbox {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.privacy-consent__box {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border: 1px solid var(--color-border-strong);
  border-radius: 2px;
  background: #fff;
  position: relative;
  transition: all 0.2s ease;
}

.privacy-consent__checkbox:checked + .privacy-consent__box {
  background: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
}

.privacy-consent__checkbox:checked + .privacy-consent__box::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 5px;
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}

.privacy-consent__checkbox:focus-visible + .privacy-consent__box {
  outline: 1px solid var(--color-brand-primary);
  outline-offset: 3px;
}

.privacy-consent__text {
  flex: 1;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.privacy-consent__text a {
  color: var(--color-brand-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: var(--fw-regular);
}

.privacy-consent__text a:hover {
  opacity: 0.65;
}

.privacy-consent .form-required-tag {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: var(--fw-regular);
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border-strong);
  padding: 2px 8px;
  border-radius: 0;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.privacy-consent.is-error {
  border-color: var(--color-error);
  background: var(--color-error-bg);
}

.privacy-consent .form-error {
  margin-top: 8px;
  margin-left: 32px;
}