/**
 * Familytree 2.0 - Forms Component
 * Neutral form styles based on globe page
 */

/* ============================================
   Form Container
   ============================================ */

.form {
  width: 100%;
}

.form-section {
  margin-bottom: var(--space-2xl);
}

.form-section:last-child {
  margin-bottom: 0;
}

/* ============================================
   Form Group
   ============================================ */

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group:last-child {
  margin-bottom: 0;
}

/* ============================================
   Form Label
   ============================================ */

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.form-label-required::after {
  content: ' *';
  color: #ef4444;
}

/* ============================================
   Form Input
   ============================================ */

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--color-text-primary);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-smooth);
  outline: none;
}

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

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-tertiary);
}

/* ============================================
   Form Textarea
   ============================================ */

.form-textarea {
  min-height: 120px;
  resize: vertical;
  line-height: var(--line-height-relaxed);
}

.form-textarea-fixed {
  resize: none;
}

/* ============================================
   Form Select
   ============================================ */

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23667eea' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: var(--space-2xl);
  cursor: pointer;
}

/* ============================================
   Form Checkbox & Radio
   ============================================ */

.form-checkbox,
.form-radio {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  user-select: none;
}

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

.form-checkbox-box,
.form-radio-box {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  transition: all var(--duration-fast) var(--ease-smooth);
  flex-shrink: 0;
}

.form-checkbox-box {
  border-radius: var(--radius-sm);
}

.form-radio-box {
  border-radius: 50%;
}

.form-checkbox input:checked ~ .form-checkbox-box,
.form-radio input:checked ~ .form-radio-box {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.form-checkbox input:checked ~ .form-checkbox-box::after {
  content: '';
  position: absolute;
  left: 7px;
  top: 3px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.form-radio input:checked ~ .form-radio-box::after {
  content: '';
  position: absolute;
  left: 6px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: white;
}

.form-checkbox:hover .form-checkbox-box,
.form-radio:hover .form-radio-box {
  border-color: var(--color-primary);
}

/* ============================================
   Form Help Text
   ============================================ */

.form-help {
  display: block;
  margin-top: var(--space-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* ============================================
   Form Error State
   ============================================ */

.form-group-error .form-input,
.form-group-error .form-textarea,
.form-group-error .form-select {
  border-color: #ef4444;
}

.form-group-error .form-input:focus,
.form-group-error .form-textarea:focus,
.form-group-error .form-select:focus {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-error {
  display: block;
  margin-top: var(--space-xs);
  font-size: var(--font-size-xs);
  color: #ef4444;
}

/* ============================================
   Form Success State
   ============================================ */

.form-group-success .form-input,
.form-group-success .form-textarea,
.form-group-success .form-select {
  border-color: #10b981;
}

.form-success {
  display: block;
  margin-top: var(--space-xs);
  font-size: var(--font-size-xs);
  color: #10b981;
}

/* ============================================
   Form Disabled State
   ============================================ */

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--color-background);
}

/* ============================================
   Form Input Group
   ============================================ */

.form-input-group {
  display: flex;
  gap: 0;
}

.form-input-group .form-input {
  border-radius: 0;
  border-right-width: 0;
}

.form-input-group .form-input:first-child {
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
}

.form-input-group .form-input:last-child,
.form-input-group .btn:last-child {
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
  border-right-width: 2px;
}

.form-input-group .btn {
  border-radius: 0;
  flex-shrink: 0;
}

/* ============================================
   Form Inline
   ============================================ */

.form-inline {
  display: flex;
  gap: var(--space-md);
  align-items: flex-end;
}

.form-inline .form-group {
  margin-bottom: 0;
  flex: 1;
}

@media (max-width: 767px) {
  .form-inline {
    flex-direction: column;
    align-items: stretch;
  }

  .form-inline .form-group {
    width: 100%;
  }
}

/* ============================================
   Form File Upload
   ============================================ */

.form-file {
  position: relative;
  display: inline-block;
}

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

.form-file-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.form-file-label:hover {
  border-color: var(--color-primary);
  background: var(--color-interactive-hover);
}

/* ============================================
   Form Search
   ============================================ */

.form-search {
  position: relative;
}

.form-search .form-input {
  padding-left: var(--space-2xl);
}

.form-search-icon {
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-tertiary);
  pointer-events: none;
}

/* ============================================
   Mobile Optimizations
   ============================================ */

@media (max-width: 767px) {
  .form-input,
  .form-textarea,
  .form-select {
    font-size: 16px; /* Prevents iOS zoom on focus */
  }
}