/**
 * Phase 4 Enhancements — MyNamCycling Landing Page
 * Form validation, search functionality, and newsletter styles
 */

/* === Form Validation Styles === */
.form-group {
  position: relative;
  margin-bottom: var(--space-6);
}

.form-control {
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--brand-600);
  box-shadow: 0 0 0 3px rgba(0, 122, 94, 0.1);
  outline: 0;
}

.form-control.is-invalid {
  border-color: #EF4444;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23EF4444'%3E%3Cpath d='M8 0C3.58 0 0 3.58 0 8s3.58 8 8 8 8-3.58 8-8-3.58-8-8-8zm1 13H7v-2h2v2zm0-4H7V5h2v4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
}

.form-control.is-invalid:focus {
  border-color: #EF4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-control.is-valid {
  border-color: var(--brand-600);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23007A5E'%3E%3Cpath d='M13.854 3.646a.5.5 0 0 1 0 .708l-7 7a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6.5 10.293l6.646-6.647a.5.5 0 0 1 .708 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
}

.form-control.is-valid:focus {
  border-color: var(--brand-600);
  box-shadow: 0 0 0 3px rgba(0, 122, 94, 0.1);
}

.field-error {
  color: #EF4444;
  font-size: var(--text-sm);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.field-error::before {
  content: '⚠';
}

/* === Search Overlay === */
.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--z-modal, 1000);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.search-overlay.show {
  opacity: 1;
  visibility: visible;
}

.search-container {
  background: var(--surface-0);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pop);
  width: 90%;
  max-width: 640px;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  transform: scale(0.95) translateY(-20px);
  transition: transform var(--transition-base);
}

.search-overlay.show .search-container {
  transform: scale(1) translateY(0);
}

.search-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--surface-100);
}

.search-icon {
  font-size: var(--text-xl);
  color: var(--ink-500);
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: var(--text-lg);
  color: var(--ink-900);
  outline: none;
}

.search-input::placeholder {
  color: var(--ink-400);
}

.search-close {
  background: transparent;
  border: none;
  color: var(--ink-500);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.search-close:hover {
  background: var(--surface-100);
  color: var(--ink-900);
}

.search-results {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-2);
  display: none;
}

.search-results.show {
  display: block;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--ink-900);
  transition: all var(--transition-fast);
}

.search-result-item:hover {
  background: var(--surface-50);
}

.search-result-image {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.search-result-content {
  flex: 1;
  min-width: 0;
}

.search-result-title {
  font-weight: 600;
  color: var(--ink-900);
  margin-bottom: var(--space-1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-result-title mark {
  background: var(--brand-100);
  color: var(--brand-700);
  padding: 2px 4px;
  border-radius: 2px;
}

.search-result-subtitle {
  font-size: var(--text-sm);
  color: var(--ink-500);
}

.search-result-badge {
  flex-shrink: 0;
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-weight: 500;
  text-transform: uppercase;
}

.search-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
  text-align: center;
  color: var(--ink-500);
}

.search-empty i {
  font-size: 48px;
  margin-bottom: var(--space-4);
  opacity: 0.3;
}

.search-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--surface-100);
  font-size: var(--text-xs);
  color: var(--ink-500);
  text-align: center;
}

.search-footer kbd {
  display: inline-block;
  padding: 2px 6px;
  background: var(--surface-100);
  border: 1px solid var(--surface-200);
  border-radius: 3px;
  font-family: monospace;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--ink-700);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* === Search Trigger Button === */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--surface-200);
  color: var(--ink-700);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--surface-50);
  border-color: var(--brand-600);
  color: var(--brand-600);
}

.btn-icon:focus-visible {
  outline: 2px solid var(--brand-600);
  outline-offset: 2px;
}

/* === Newsletter Form Enhancements === */
#newsletter-form .form-control {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--surface-0);
}

#newsletter-form .form-control::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

#newsletter-form .form-control:focus {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--surface-0);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

#newsletter-form .form-control.is-valid {
  border-color: var(--accent-500);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23FFC700'%3E%3Cpath d='M13.854 3.646a.5.5 0 0 1 0 .708l-7 7a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6.5 10.293l6.646-6.647a.5.5 0 0 1 .708 0z'/%3E%3C/svg%3E");
}

#newsletter-form .form-control.is-invalid {
  border-color: #EF4444;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23EF4444'%3E%3Cpath d='M8 0C3.58 0 0 3.58 0 8s3.58 8 8 8 8-3.58 8-8-3.58-8-8-8zm1 13H7v-2h2v2zm0-4H7V5h2v4z'/%3E%3C/svg%3E");
}

#newsletter-form .field-error {
  color: #FFC700;
  margin-top: var(--space-2);
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
  .nav-actions {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    gap: var(--space-2);
  }
  
  .nav-actions .btn-primary {
    display: none;
  }
  
  .search-overlay {
    padding-top: 5vh;
  }
  
  .search-container {
    width: 95%;
    max-height: 80vh;
  }
}