/**
 * @file
 * LINCS Theme - Component Styles
 * 
 * Stili per i componenti UI riutilizzabili.
 */

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
  border-radius: var(--border-radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

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

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

.btn--primary:hover {
  background-color: var(--sapienza-bordeaux-dark);
  color: var(--text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-bordeaux);
}

.btn--secondary {
  background-color: transparent;
  color: var(--sapienza-bordeaux);
  border: 2px solid var(--sapienza-bordeaux);
}

.btn--secondary:hover {
  background-color: var(--sapienza-bordeaux);
  color: var(--text-inverse);
}

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

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

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

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

/* Button Sizes */
.btn--sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
}

.btn--lg {
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
}

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

/* Button with Icon */
.btn--icon svg {
  width: 1.25em;
  height: 1.25em;
}

/* ========================================
   CARDS
   ======================================== */

.card {
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

.card__image {
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card__image img {
  transform: scale(1.05);
}

.card__content {
  padding: var(--space-6);
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.card__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
  line-height: var(--line-height-tight);
}

.card__title a {
  color: var(--text-primary);
}

.card__title a:hover {
  color: var(--sapienza-bordeaux);
  text-decoration: none;
}

.card__excerpt {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-light);
}

.card__author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.card__author-avatar {
  width: 32px;
  height: 32px;
  background-color: var(--sapienza-bordeaux)/10;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card__author-name {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* Card Tag */
.card__tag {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  padding: var(--space-1) var(--space-3);
  background-color: var(--sapienza-bordeaux);
  color: var(--text-inverse);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius-full);
}

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

.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--border-radius-full);
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
}

.tag--primary {
  background-color: var(--sapienza-bordeaux);
  color: var(--text-inverse);
}

.tag--secondary {
  background-color: var(--accent-gold);
  color: var(--neutral-900);
}

.tag--outline {
  background-color: transparent;
  border: 1px solid var(--border-medium);
}

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

.messages {
  padding: var(--space-4);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--space-6);
}

.messages--status {
  background-color: #DCFCE7;
  border: 1px solid #86EFAC;
  color: #166534;
}

.messages--warning {
  background-color: #FEF3C7;
  border: 1px solid #FCD34D;
  color: #92400E;
}

.messages--error {
  background-color: #FEE2E2;
  border: 1px solid #FCA5A5;
  color: #991B1B;
}

.messages--info {
  background-color: #DBEAFE;
  border: 1px solid #93C5FD;
  color: #1E40AF;
}

/* ========================================
   PAGINATION
   ======================================== */

.pager {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-8);
}

.pager__item {
  list-style: none;
}

.pager__link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-3);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.pager__link:hover {
  background-color: var(--bg-secondary);
  border-color: var(--border-medium);
  color: var(--text-primary);
  text-decoration: none;
}

.pager__item--active .pager__link {
  background-color: var(--sapienza-bordeaux);
  border-color: var(--sapienza-bordeaux);
  color: var(--text-inverse);
}

.pager__item--disabled .pager__link {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========================================
   BREADCRUMB
   ======================================== */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb__item:not(:last-child)::after {
  content: '/';
  color: var(--border-medium);
}

.breadcrumb__link {
  color: var(--text-secondary);
}

.breadcrumb__link:hover {
  color: var(--sapienza-bordeaux);
}

.breadcrumb__item--active {
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
}

/* ========================================
   TABS
   ======================================== */

.tabs {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--border-light);
  margin-bottom: var(--space-6);
}

.tabs__item {
  list-style: none;
}

.tabs__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--transition-fast);
}

.tabs__link:hover {
  color: var(--sapienza-bordeaux);
  text-decoration: none;
}

.tabs__item--active .tabs__link {
  color: var(--sapienza-bordeaux);
  border-bottom-color: var(--sapienza-bordeaux);
}

/* ========================================
   ACCORDION / DETAILS
   ======================================== */

.details {
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--space-4);
}

.details__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  list-style: none;
}

.details__summary::-webkit-details-marker {
  display: none;
}

.details__summary::after {
  content: '';
  width: 20px;
  height: 20px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236B2737'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-size: contain;
  transition: transform var(--transition-fast);
}

.details[open] .details__summary::after {
  transform: rotate(180deg);
}

.details__content {
  padding: 0 var(--space-4) var(--space-4);
}

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

.spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--border-light);
  border-top-color: var(--sapienza-bordeaux);
  border-radius: 50%;
  animation: spinner 0.8s linear infinite;
}

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

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-gradient {
  background: linear-gradient(135deg, var(--sapienza-bordeaux) 0%, var(--accent-coral) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-pattern {
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%236B2737' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}