/* ============================================================================
   QUEIROLO AUTOS - COMPONENT LIBRARY
   Phase 5 - UI/UX Design Implementation
   Reusable component stubs following BEM methodology
   ============================================================================ */

/* ============================================================================
   BUTTON COMPONENTS
   ============================================================================ */

/* Base Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  white-space: nowrap;
  min-height: 44px; /* Touch-friendly minimum */
}

.btn:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Variants */
.btn--primary {
  background-color: var(--color-primary-600);
  border-color: var(--color-primary-600);
  color: var(--color-text-inverse);
}

.btn--primary:hover:not(:disabled) {
  background-color: var(--color-primary-700);
  border-color: var(--color-primary-700);
}

.btn--primary:active:not(:disabled) {
  background-color: var(--color-primary-800);
  border-color: var(--color-primary-800);
}

.btn--secondary {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-border-primary);
  color: var(--color-text-primary);
}

.btn--secondary:hover:not(:disabled) {
  background-color: var(--color-gray-50);
  border-color: var(--color-border-secondary);
}

.btn--success {
  background-color: var(--color-success-600);
  border-color: var(--color-success-600);
  color: var(--color-text-inverse);
}

.btn--success:hover:not(:disabled) {
  background-color: var(--color-success-700);
  border-color: var(--color-success-700);
}

.btn--danger {
  background-color: var(--color-danger-600);
  border-color: var(--color-danger-600);
  color: var(--color-text-inverse);
}

.btn--danger:hover:not(:disabled) {
  background-color: var(--color-danger-700);
  border-color: var(--color-danger-700);
}

.btn--outline {
  background-color: transparent;
  border-color: var(--color-primary-600);
  color: var(--color-primary-600);
}

.btn--outline:hover:not(:disabled) {
  background-color: var(--color-primary-600);
  color: var(--color-text-inverse);
}

.btn--ghost {
  background-color: transparent;
  border-color: transparent;
  color: var(--color-primary-600);
}

.btn--ghost:hover:not(:disabled) {
  background-color: var(--color-primary-50);
}

/* Button Sizes */
.btn--sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.btn--lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

.btn--xl {
  padding: var(--spacing-5) var(--spacing-10);
  font-size: var(--font-size-xl);
  min-height: 60px;
}

/* Full Width Button */
.btn--block {
  display: flex;
  width: 100%;
}

/* Button with Icon */
.btn__icon {
  width: 1em;
  height: 1em;
  margin-right: var(--spacing-2);
}

.btn__icon--right {
  margin-right: 0;
  margin-left: var(--spacing-2);
}

/* Loading State */
.btn--loading {
  position: relative;
  color: transparent;
}

.btn--loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1.25em;
  height: 1.25em;
  margin-top: -0.625em;
  margin-left: -0.625em;
  border: 2px solid currentColor;
  border-radius: 50%;
  border-top-color: transparent;
  animation: btn-spin 0.8s linear infinite;
}

@keyframes btn-spin {
  to { transform: rotate(360deg); }
}

/* ============================================================================
   CARD COMPONENTS
   ============================================================================ */

/* Base Card */
.card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

/* Card Header */
.card__header {
  padding: var(--spacing-6);
  background-color: var(--color-gray-50);
  border-bottom: 1px solid var(--color-border-primary);
}

.card__title {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.card__subtitle {
  margin: var(--spacing-1) 0 0 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Card Body */
.card__body {
  padding: var(--spacing-6);
}

.card__body p:last-child {
  margin-bottom: 0;
}

/* Card Footer */
.card__footer {
  padding: var(--spacing-4) var(--spacing-6);
  background-color: var(--color-gray-50);
  border-top: 1px solid var(--color-border-primary);
}

/* Card Variants */
.card--elevated {
  box-shadow: var(--shadow-lg);
  border: none;
}

.card--bordered {
  border: 2px solid var(--color-border-primary);
}

.card--primary {
  border-color: var(--color-primary-200);
}

.card--primary .card__header {
  background-color: var(--color-primary-50);
}

.card--success {
  border-color: var(--color-success-200);
}

.card--success .card__header {
  background-color: var(--color-success-50);
}

/* Compact Card */
.card--compact .card__header,
.card--compact .card__body,
.card--compact .card__footer {
  padding: var(--spacing-4);
}

/* Interactive Card */
.card--interactive {
  cursor: pointer;
  transition: all var(--transition-fast);
}

.card--interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.card--interactive:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* ============================================================================
   FORM COMPONENTS
   ============================================================================ */

/* Form Group */
.form-group {
  margin-bottom: var(--spacing-5);
}

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

/* Form Label */
.form-label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.form-label--required::after {
  content: ' *';
  color: var(--color-danger-500);
}

/* Form Input Base */
.form-input {
  display: block;
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  min-height: 44px; /* Touch-friendly minimum */
}

.form-input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

.form-input:disabled {
  background-color: var(--color-gray-100);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

/* Form Input Variants */
.form-input--error {
  border-color: var(--color-danger-500);
}

.form-input--error:focus {
  border-color: var(--color-danger-500);
  box-shadow: 0 0 0 3px rgb(239 68 68 / 0.1);
}

.form-input--success {
  border-color: var(--color-success-500);
}

.form-input--success:focus {
  border-color: var(--color-success-500);
  box-shadow: 0 0 0 3px rgb(16 185 129 / 0.1);
}

/* Form Input Sizes */
.form-input--sm {
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.form-input--lg {
  padding: var(--spacing-4) var(--spacing-5);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

/* Textarea */
.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* Select */
.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--spacing-3) center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: var(--spacing-10);
}

/* Checkbox & Radio */
.form-checkbox,
.form-radio {
  appearance: none;
  width: 1.25rem;
  height: 1.25rem;
  border: 1px solid var(--color-border-primary);
  background-color: var(--color-bg-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

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

.form-checkbox:checked,
.form-radio:checked {
  background-color: var(--color-primary-600);
  border-color: var(--color-primary-600);
}

.form-checkbox:checked {
  background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='m13.854 3.646-7.5 7.5a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6 10.293l7.146-7.147a.5.5 0 0 1 .708.708z'/%3e%3c/svg%3e");
}

.form-radio:checked {
  background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3ccircle cx='8' cy='8' r='3'/%3e%3c/svg%3e");
}

/* Form Help Text */
.form-help {
  display: block;
  margin-top: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.form-error {
  display: block;
  margin-top: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: var(--color-danger-500);
}

.form-success {
  display: block;
  margin-top: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: var(--color-success-600);
}

/* Form Row */
.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.form-row .form-group {
  flex: 1;
  min-width: 0;
}

/* Form Actions */
.form-actions {
  display: flex;
  gap: var(--spacing-3);
  margin-top: var(--spacing-6);
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--color-border-primary);
}

.form-actions--centered {
  justify-content: center;
}

.form-actions--right {
  justify-content: flex-end;
}

/* ============================================================================
   NAVIGATION COMPONENTS
   ============================================================================ */

/* Navigation Base */
.nav {
  display: flex;
  align-items: center;
  padding: var(--spacing-4) 0;
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-primary);
}

.nav__brand {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-600);
  text-decoration: none;
  margin-right: auto;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary-600);
}

/* Mobile Navigation */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
  cursor: pointer;
}

@media (max-width: 767px) {
  .nav__toggle {
    display: block;
  }

  .nav__menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border-primary);
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-4);
    display: none;
  }

  .nav__menu--open {
    display: flex;
  }

  .nav__link {
    padding: var(--spacing-3);
    border-radius: var(--radius-md);
  }
}

/* ============================================================================
   ALERT COMPONENTS
   ============================================================================ */

.alert {
  padding: var(--spacing-4);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-4);
}

.alert__title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-1);
}

.alert__message {
  margin: 0;
}

.alert--info {
  background-color: var(--color-primary-50);
  border-color: var(--color-primary-200);
  color: var(--color-primary-800);
}

.alert--success {
  background-color: var(--color-success-50);
  border-color: var(--color-success-200);
  color: var(--color-success-800);
}

.alert--warning {
  background-color: #fef3c7;
  border-color: #fde68a;
  color: #92400e;
}

.alert--danger {
  background-color: #fee2e2;
  border-color: #fecaca;
  color: #991b1b;
}

/* ============================================================================
   BADGE COMPONENTS
   ============================================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge--primary {
  background-color: var(--color-primary-100);
  color: var(--color-primary-800);
}

.badge--success {
  background-color: var(--color-success-100);
  color: var(--color-success-800);
}

.badge--warning {
  background-color: #fef3c7;
  color: #92400e;
}

.badge--danger {
  background-color: #fee2e2;
  color: #991b1b;
}

.badge--gray {
  background-color: var(--color-gray-100);
  color: var(--color-gray-800);
}

/* ============================================================================
   TABLE COMPONENTS
   ============================================================================ */

.table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table__header {
  background-color: var(--color-gray-50);
}

.table__header-cell {
  padding: var(--spacing-4);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-primary);
}

.table__cell {
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-primary);
  color: var(--color-text-primary);
}

.table__row:hover {
  background-color: var(--color-gray-50);
}

.table__row:last-child .table__cell {
  border-bottom: none;
}

/* Responsive Table */
@media (max-width: 767px) {
  .table--responsive {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

/* ============================================================================
   LOADING COMPONENTS
   ============================================================================ */

.spinner {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--color-gray-200);
  border-radius: 50%;
  border-top-color: var(--color-primary-600);
  animation: spin 1s ease-in-out infinite;
}

.spinner--sm {
  width: 1rem;
  height: 1rem;
  border-width: 1px;
}

.spinner--lg {
  width: 2rem;
  height: 2rem;
  border-width: 3px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================================================
   BRAND LOGO COMPONENT
   Responsive, accessible, high-DPI logo with dark mode support
   ============================================================================ */

.brand-logo {
  display: block;
  width: auto;
  height: 80px;
  max-width: 280px;
  object-fit: contain;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.brand-logo:hover {
  transform: scale(1.02);
}

/* Responsive sizing for different devices */
@media (max-width: 767px) {
  /* Mobile: smaller logo */
  .brand-logo {
    height: 64px;
    max-width: 220px;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  /* Tablet: medium logo */
  .brand-logo {
    height: 72px;
    max-width: 250px;
  }
}

@media (min-width: 1024px) {
  /* Desktop: full size logo */
  .brand-logo {
    height: 80px;
    max-width: 280px;
  }
}

/* High-DPI (Retina) display optimization */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .brand-logo {
    image-rendering: -webkit-optimize-contrast;
  }
}

/* Dark mode support (if implemented in future) */
@media (prefers-color-scheme: dark) {
  .brand-logo {
    filter: brightness(0.9);
  }
}