/**
 * Components
 * Componentes reutilizáveis do tema
 */

/* ==========================================================================
   POST CARD
   ========================================================================== */

.post-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-link {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card-thumbnail {
  position: relative;
  padding-bottom: 66.67%; /* 3:2 aspect ratio */
  overflow: hidden;
  background: var(--color-gray-200);
}

.card-thumbnail img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.post-card:hover .card-thumbnail img {
  transform: scale(1.05);
}

.card-category {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  z-index: 2;
}

.card-badge {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  z-index: 2;
}

.card-badge-new {
  background: var(--color-error);
  color: var(--color-white);
}

.card-content {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-3);
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-excerpt {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: auto;
}

.card-date,
.card-reading-time {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.card-date svg,
.card-reading-time svg {
  flex-shrink: 0;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: none;
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-secondary);
  color: var(--color-white);
}

.btn-secondary:hover {
  background: var(--color-secondary-dark);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

/* ==========================================================================
   FORMS
   ========================================================================== */

.search-form {
  display: flex;
  gap: var(--space-2);
  max-width: 500px;
}

.search-form input[type="search"] {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border-medium);
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-family: var(--font-primary);
  transition: border-color var(--transition-fast);
}

.search-form input[type="search"]:focus {
  outline: none;
  border-color: var(--color-primary);
}

.search-form button,
.search-form input[type="submit"] {
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.search-form button:hover,
.search-form input[type="submit"]:hover {
  background: var(--color-primary-dark);
}

/* ==========================================================================
   BREADCRUMBS
   ========================================================================== */

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.breadcrumbs a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
  color: var(--color-primary);
}

.breadcrumbs-separator {
  color: var(--color-text-muted);
}

/* ==========================================================================
   BADGES
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.badge-secondary {
  background: var(--color-secondary);
  color: var(--color-white);
}

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

.badge-warning {
  background: var(--color-warning);
  color: var(--color-gray-900);
}

/* ==========================================================================
   ALERTS
   ========================================================================== */

.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius);
  margin-bottom: var(--space-4);
  border-left: 4px solid;
}

.alert-info {
  background: rgba(66, 133, 244, 0.1);
  border-color: var(--color-info);
  color: var(--color-info);
}

.alert-success {
  background: rgba(52, 168, 83, 0.1);
  border-color: var(--color-success);
  color: var(--color-success);
}

.alert-warning {
  background: rgba(251, 188, 4, 0.1);
  border-color: var(--color-warning);
  color: #8a6d00;
}

.alert-error {
  background: rgba(234, 67, 53, 0.1);
  border-color: var(--color-error);
  color: var(--color-error);
}

/* ==========================================================================
   SOCIAL SHARE
   ========================================================================== */

.share-buttons {
  display: flex;
  gap: var(--space-3);
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-white);
  text-decoration: none;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.share-btn:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

.share-facebook {
  background: #1877f2;
}

.share-twitter {
  background: #1da1f2;
}

.share-whatsapp {
  background: #25d366;
}

.share-linkedin {
  background: #0077b5;
}

/* ==========================================================================
   BACK TO TOP
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: var(--z-fixed);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-4px);
}

/* ==========================================================================
   LOADING SPINNER
   ========================================================================== */

.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

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

/* ==========================================================================
   NO RESULTS
   ========================================================================== */

.no-results {
  text-align: center;
  padding: var(--space-16) var(--space-4);
}

.no-results-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.no-results-text {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

.no-results-search {
  max-width: 500px;
  margin: 0 auto;
}