/* =====================================================
   REENGAGEMENT ROOM - FORM ELEMENTS & INPUTS
   Phase 5 CSS Extraction
   Created: December 9, 2025
   Purpose: Form layouts, input fields, buttons, validation
   ===================================================== */

/* ===== FORM GRID LAYOUT ===== */

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

/* ===== FORM GROUPS ===== */

.form-group {
  display: flex;
  flex-direction: column;
  position: relative;
}

.form-group label {
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--text);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: var(--transition);
}

/* ===== FORM INPUTS ===== */

.form-group input,
.form-group select,
.form-group textarea,
.form-input,
.form-select {
  padding: var(--spacing-md);
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 0.875rem;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--card);
  color: var(--text);
  position: relative;
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover,
.form-input:hover,
.form-select:hover {
  border-color: var(--accent-light);
  box-shadow: 0 3px 12px rgba(102, 0, 0, 0.1);
  transform: translateY(-1px);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(102, 0, 0, 0.12), 0 4px 16px rgba(102, 0, 0, 0.15);
  transform: translateY(-2px);
}

/* ===== PLACEHOLDER STYLES ===== */

.form-group input::placeholder,
.form-group textarea::placeholder,
.form-input::placeholder {
  color: var(--text-muted);
  transition: all 0.25s ease;
}

.form-group input:focus::placeholder,
.form-group textarea:focus::placeholder,
.form-input:focus::placeholder {
  opacity: 0.5;
  transform: translateX(4px);
}

/* ===== DATETIME INPUT ===== */

.form-group input[type="datetime-local"] {
  font-family: inherit;
  cursor: pointer;
}

.form-group input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.form-group input[type="datetime-local"]::-webkit-calendar-picker-indicator:hover {
  opacity: 1;
}

/* ===== TEXTAREA ===== */

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

/* ===== BUTTONS ===== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.2) 50%, transparent 100%);
  transition: var(--transition);
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 12px rgba(0, 102, 204, 0.35);
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3);
}

.btn-secondary {
  background: linear-gradient(135deg, #6c757d 0%, #5a6268 100%);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(108, 117, 125, 0.3);
}

.btn-secondary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.2) 50%, transparent 100%);
  transition: var(--transition);
}

.btn-secondary:hover::before {
  left: 100%;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(108, 117, 125, 0.4);
  background: linear-gradient(135deg, #5a6268 0%, #545b62 100%);
}

/* ===== STUDENT SEARCH ===== */

.student-search {
  position: relative;
  width: 100%;
  margin-bottom: var(--spacing-lg);
}

.student-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--card);
  border: 2px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--border-radius) var(--border-radius);
  max-height: 400px;
  overflow-y: auto;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  display: none;
  animation: fadeIn 0.2s ease;
}

.student-dropdown.show {
  display: block;
}

.student-search .student-dropdown {
  margin-top: -2px;
}

.student-option {
  padding: var(--spacing-md);
  cursor: pointer;
  transition: var(--transition);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.student-option:hover {
  background: var(--border-light);
  transform: translateX(4px);
}

.student-option:last-child {
  border-bottom: none;
}

.student-option .student-name {
  font-weight: 600;
  color: var(--text);
  flex: 1;
}

.student-option .student-id {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--border-light);
  padding: 2px 8px;
  border-radius: 12px;
}

.student-option .student-year {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: auto;
}

/* ===== FIELD VALIDATION ===== */

/* Required field indicator */
label[for]:has(~ input[required])::after,
label[for]:has(~ select[required])::after,
label[for]:has(~ textarea[required])::after {
  content: ' *';
  color: var(--danger);
  font-weight: bold;
}

/* Completed field visual feedback */
.field-completed {
  border-color: var(--success) !important;
  background: rgba(5, 150, 105, 0.05) !important;
  position: relative;
}

.field-completed::after {
  content: '✓';
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--success);
  font-weight: bold;
  font-size: 1.2rem;
  pointer-events: none;
}

/* ===== TYPE OPTIONS (Radio/Checkbox Style) ===== */

.type-option {
  padding: var(--spacing-lg);
  border: 2px solid var(--border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  background: var(--card);
  text-align: center;
}

.type-option:hover {
  border-color: var(--accent);
  background: rgba(102,0,0,0.05);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.type-option.selected {
  border-color: var(--accent);
  background: rgba(102,0,0,0.1);
  box-shadow: 0 0 0 3px rgba(102,0,0,0.1);
}

.type-option .type-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.type-option .type-label {
  font-weight: 600;
  color: var(--text);
}

/* ===== ACCESSIBILITY ===== */

/* Screen reader only text */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus indicators */
.tab-btn:focus,
.btn:focus,
.form-input:focus,
.form-select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */

@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .form-group input,
  .form-group select,
  .form-group textarea,
  .form-input,
  .form-select {
    font-size: 16px; /* Prevent zoom on iOS */
  }

  .btn {
    width: 100%;
    padding: var(--spacing-md);
  }

  .student-dropdown {
    max-height: 300px;
  }
}

@media (max-width: 480px) {
  .form-group label {
    font-size: 0.8125rem;
  }

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

  .type-option {
    padding: var(--spacing-md);
  }

  .type-option .type-icon {
    font-size: 1.5rem;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .form-group input,
  .form-group select,
  .form-group textarea,
  .form-input,
  .form-select {
    border-width: 3px;
  }

  .btn {
    border: 2px solid currentColor;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .form-group input,
  .form-group select,
  .form-group textarea,
  .form-input,
  .form-select,
  .btn,
  .student-option {
    transition: none;
    transform: none !important;
  }

  .btn::before,
  .btn-secondary::before {
    animation: none;
  }
}