/* ====================================================================
   Form Controls — Figma Faculty Portal Design
   Inputs, Selects, Labels, Textareas, File Inputs, Fieldsets
   ==================================================================== */

/* ─── Form Grid Layout ─── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-4);
}

/* ─── Form Group ─── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: var(--space-4);
  position: relative;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

/* ─── Labels ─── */
.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  line-height: 1.4;
}

.form-label .required-star,
.required-field::after {
  color: var(--color-danger);
  margin-left: 0.15rem;
}

.required-field::after {
  content: '*';
}

/* ─── Input / Select / Textarea Controls ─── */
.form-control {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: var(--font-size-sm);
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  line-height: 1.5;
}

.form-control::placeholder {
  color: var(--text-tertiary);
}

/* Focus State */
.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2.5px rgba(123, 31, 50, 0.12);
  outline: none;
}

/* Hover State */
.form-control:hover:not(:focus):not(:disabled):not([readonly]) {
  border-color: var(--text-tertiary);
}

/* Error / Invalid State */
.form-control.is-invalid {
  border-color: var(--status-rejected-border);
  background-color: #FFF5F5;
}

.form-control.is-invalid:focus {
  box-shadow: 0 0 0 2.5px rgba(220, 38, 38, 0.12);
}

/* Valid / Success State */
.form-control.is-valid {
  border-color: var(--status-approved-border);
}

.form-control.is-valid:focus {
  box-shadow: 0 0 0 2.5px rgba(5, 150, 105, 0.12);
}

/* Disabled State */
.form-control:disabled,
.form-control[readonly] {
  background-color: var(--bg-main);
  color: var(--text-secondary);
  cursor: default;
  opacity: 0.8;
}

/* ─── Password Toggle Button ─── */
.form-control-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.password-toggle-btn {
  position: absolute;
  right: 0.625rem;
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 0.2rem;
  display: flex;
  align-items: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.password-toggle-btn:hover {
  color: var(--text-primary);
}

/* ─── Textarea ─── */
textarea.form-control {
  min-height: 90px;
  resize: vertical;
}

/* ─── Select ─── */
select.form-control {
  cursor: pointer;
  appearance: auto;
}

/* ─── Form Helper Text ─── */
.form-hint,
.form-text {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  line-height: 1.4;
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  margin-top: 0.2rem;
  line-height: 1.4;
}

/* ─── Category Extension Fieldset Sections ─── */
.fieldset-section {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-top: var(--space-5);
  background-color: var(--surface-secondary);
  animation: fadeIn 0.3s ease;
}

.fieldset-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--primary-color);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ─── File Input Styling ─── */
input[type="file"].form-control {
  padding: 0.4rem 0.625rem;
  cursor: pointer;
  font-size: var(--font-size-xs);
}

input[type="file"].form-control::file-selector-button {
  padding: 0.3rem 0.75rem;
  margin-right: var(--space-3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

input[type="file"].form-control::file-selector-button:hover {
  background-color: var(--border-color);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}