/**
 * MTG Set Gallery - Unified CSS
 * Stili unificati per la galleria MTG Set con miglioramenti di performance e accessibilità
 * 
 * @version 6.0.0
 * @author P. Fabio C.
 */

/* ==========================================================================
   VARIABILI CSS CUSTOM
   ========================================================================== */

:root {
  /* Colori principali */
  --mtg-primary-color: #1e293b;
  --mtg-secondary-color: #475569;
  --mtg-accent-color: #3b82f6;
  --mtg-text-color: #334155;
  --mtg-text-light: #64748b;
  --mtg-background: #ffffff;
  --mtg-surface: #f8fafc;
  --mtg-border: #e2e8f0;
  --mtg-border-light: #f1f5f9;
  
  /* Colori rarità (ufficiali simboli MTG) */
  --mtg-common: #0E0E0E;     /* Nero per Common */
  --mtg-uncommon: #C0C0C0;   /* Argento per Uncommon */
  --mtg-rare: #FFAA00;       /* Oro per Rare */
  --mtg-mythic: #EE4B2B;     /* Rosso-arancione per Mythic */
  
  /* Stati */
  --mtg-hover-bg: #f1f5f9;
  --mtg-active-bg: #e2e8f0;
  --mtg-focus-outline: #3b82f6;
  --mtg-error-color: #dc2626;
  --mtg-success-color: #059669;
  
  /* Dimensioni */
  --mtg-border-radius: 8px;
  --mtg-border-radius-small: 4px;
  --mtg-spacing-xs: 0.25rem;
  --mtg-spacing-sm: 0.5rem;
  --mtg-spacing-md: 1rem;
  --mtg-spacing-lg: 1.5rem;
  --mtg-spacing-xl: 2rem;
  
  /* Transizioni */
  --mtg-transition-fast: 0.15s ease-in-out;
  --mtg-transition-normal: 0.3s ease-in-out;
  --mtg-transition-slow: 0.5s ease-in-out;
  
  /* Shadow */
  --mtg-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --mtg-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --mtg-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* Layout */
  --mtg-card-width: 280px;
  --mtg-card-aspect-ratio: 0.714; /* 5:7 ratio tipico delle carte MTG */
}

/* ==========================================================================
   RESET E BASE
   ========================================================================== */

.mtg-set-gallery *,
.mtg-set-gallery *::before,
.mtg-set-gallery *::after {
  box-sizing: border-box;
}

.mtg-set-gallery {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--mtg-text-color);
  background-color: var(--mtg-background);
  border-radius: var(--mtg-border-radius);
  padding: var(--mtg-spacing-lg);
  margin: var(--mtg-spacing-md) 0;
}

/* ==========================================================================
   LAYOUT PRINCIPALE
   ========================================================================== */

.mtg-set-gallery__header {
  margin-bottom: var(--mtg-spacing-xl);
  text-align: center;
}

.mtg-set-gallery__title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--mtg-primary-color);
  margin: 0 0 var(--mtg-spacing-sm);
  line-height: 1.2;
}

.mtg-set-gallery__description {
  font-size: 1.125rem;
  color: var(--mtg-text-light);
  margin: 0 0 var(--mtg-spacing-lg);
}

/* ==========================================================================
   FILTRI
   ========================================================================== */

.mtg-set-gallery__filters {
  display: flex;
  justify-content: center;
  margin-bottom: var(--mtg-spacing-lg);
}

.mtg-set-gallery__rarity-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--mtg-spacing-sm);
  justify-content: center;
}

.mtg-set-gallery__rarity-button {
  display: inline-flex;
  align-items: center;
  padding: var(--mtg-spacing-sm) var(--mtg-spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--mtg-text-color);
  background-color: var(--mtg-surface);
  border: 1px solid var(--mtg-border);
  border-radius: var(--mtg-border-radius-small);
  cursor: pointer;
  transition: all var(--mtg-transition-fast);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.mtg-set-gallery__rarity-button:hover {
  background-color: var(--mtg-hover-bg);
  border-color: var(--mtg-border);
  transform: translateY(-1px);
  box-shadow: var(--mtg-shadow-sm);
}

.mtg-set-gallery__rarity-button:focus {
  outline: 2px solid var(--mtg-focus-outline);
  outline-offset: 2px;
}

.mtg-set-gallery__rarity-button--active {
  background-color: var(--mtg-accent-color);
  color: white;
  border-color: var(--mtg-accent-color);
  box-shadow: var(--mtg-shadow-md);
}

.mtg-set-gallery__rarity-button--active:hover {
  background-color: var(--mtg-accent-color);
  transform: translateY(-1px);
}

/* ==========================================================================
   CONTATORE RISULTATI
   ========================================================================== */

.mtg-set-gallery__results-counter {
  text-align: center;
  font-size: 0.875rem;
  color: var(--mtg-text-light);
  margin-bottom: var(--mtg-spacing-lg);
  padding: var(--mtg-spacing-sm);
  background-color: var(--mtg-surface);
  border-radius: var(--mtg-border-radius-small);
  border: 1px solid var(--mtg-border-light);
}

/* ==========================================================================
   GRIGLIA CARTE (Condivisa tra mtg_set_gallery e mtg_cards)
   ========================================================================== */

.mtg-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--mtg-card-width), 1fr));
  gap: var(--mtg-spacing-lg);
  margin-bottom: var(--mtg-spacing-xl);
}

/* Supporto per colonne personalizzate (parametro per_row di mtg_cards) */
@media (min-width: 1025px) {
  .mtg-cards-grid[style*="--mtg-preferred-columns"] {
    grid-template-columns: repeat(var(--mtg-preferred-columns, auto-fill), minmax(var(--mtg-card-width), 1fr));
  }
}

/* Layout specifico per mtg_cards quando non è in un container mtg-set-gallery */
.mtg-set-section .mtg-cards-grid {
  padding: var(--mtg-spacing-md);
  background-color: var(--mtg-surface);
  border-radius: var(--mtg-border-radius);
  border: 1px solid var(--mtg-border-light);
}

/* ==========================================================================
   CARTA SINGOLA
   ========================================================================== */

.mtg-card {
  display: flex;
  flex-direction: column;
  background-color: var(--mtg-background);
  border: 1px solid var(--mtg-border-light);
  border-radius: var(--mtg-border-radius);
  overflow: hidden;
  transition: all var(--mtg-transition-normal);
  cursor: pointer;
  position: relative;
  outline: none;
  box-shadow: var(--mtg-shadow-sm);
}

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

.mtg-card:focus {
  outline: 2px solid var(--mtg-focus-outline);
  outline-offset: 2px;
}

.mtg-card--hidden {
  opacity: 0.3;
  transform: scale(0.95);
  pointer-events: none;
}

/* ==========================================================================
   IMMAGINE CARTA
   ========================================================================== */

.mtg-card__image-container {
  position: relative;
  width: 100%;
  aspect-ratio: var(--mtg-card-aspect-ratio);
  background-color: var(--mtg-surface);
  overflow: hidden;
}

.mtg-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: opacity var(--mtg-transition-normal);
  background-color: var(--mtg-surface);
}

.mtg-card__image--loading {
  opacity: 0.7;
  background: linear-gradient(-90deg, #f0f0f0 0%, #e0e0e0 50%, #f0f0f0 100%);
  background-size: 400% 400%;
  animation: shimmer 1.5s ease-in-out infinite;
}

.mtg-card__image--loaded {
  opacity: 1;
}

.mtg-card__image--error {
  opacity: 0.5;
}

.mtg-card__image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background-color: var(--mtg-surface);
  color: var(--mtg-text-light);
  font-size: 0.875rem;
  text-align: center;
}

.mtg-card__image-error {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: var(--mtg-spacing-sm);
  background-color: rgba(255, 255, 255, 0.9);
  border-radius: var(--mtg-border-radius-small);
  font-size: 0.75rem;
  color: var(--mtg-error-color);
  text-align: center;
}

/* ==========================================================================
   CONTENUTO CARTA
   ========================================================================== */

.mtg-card__content {
  padding: var(--mtg-spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: var(--mtg-spacing-sm);
}

.mtg-card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--mtg-primary-color);
  margin: 0;
  line-height: 1.3;
  word-wrap: break-word;
  hyphens: auto;
}

.mtg-card__type {
  font-size: 0.875rem;
  color: var(--mtg-text-light);
  line-height: 1.4;
}

/* Badge rarità COMPLETAMENTE DISABILITATI - neutri senza colori */
/*
.mtg-card__rarity {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--mtg-spacing-xs) var(--mtg-spacing-sm);
  border-radius: var(--mtg-border-radius-small);
  align-self: flex-start;
  background-color: transparent !important;
  background: transparent !important;
  border: 2px solid;
  color: var(--mtg-common);
  border-color: var(--mtg-common);
  text-shadow: none !important;
}

.mtg-card__rarity--common {
  color: var(--mtg-common) !important;
  border-color: var(--mtg-common) !important;
  background: transparent !important;
  background-color: transparent !important;
  text-shadow: none !important;
}

.mtg-card__rarity--uncommon {
  color: var(--mtg-uncommon) !important;
  border-color: var(--mtg-uncommon) !important;
  background: transparent !important;
  background-color: transparent !important;
  text-shadow: none !important;
}

.mtg-card__rarity--rare {
  color: var(--mtg-rare) !important;
  border-color: var(--mtg-rare) !important;
  background: transparent !important;
  background-color: transparent !important;
  text-shadow: none !important;
}

.mtg-card__rarity--mythic {
  color: var(--mtg-mythic) !important;
  border-color: var(--mtg-mythic) !important;
  background: transparent !important;
  background-color: transparent !important;
  text-shadow: none !important;
}
*/

/* ==========================================================================
   PREZZI
   ========================================================================== */

.mtg-card__prices {
  margin-top: auto;
}

.mtg-card__prices small {
  display: block;
  font-size: 0.75rem;
  color: var(--mtg-text-light);
  margin-bottom: var(--mtg-spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

/* Coppie di prezzi [normale] [foil] */
.mtg-card__price-row {
  margin-bottom: var(--mtg-spacing-xs);
}

.mtg-card__price-pair {
  display: flex;
  gap: var(--mtg-spacing-sm);
  align-items: center;
}

.mtg-card__price-normal,
.mtg-card__price-foil {
  font-size: 0.875rem;
  font-weight: 500;
  padding: 2px 6px;
  border-radius: var(--mtg-border-radius-small);
  background-color: var(--mtg-surface);
  color: var(--mtg-success-color);
}

.mtg-card__price-foil {
  background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 25%, #f5f5f5 50%, #e8e8e8 75%, #f5f5f5 100%);
  border: 1px solid #c0c0c0;
  font-style: italic;
  color: #606060;
  font-weight: 600;
  text-shadow: 0 1px 1px rgba(255,255,255,0.8);
  box-shadow: inset 0 1px 2px rgba(255,255,255,0.3), 0 1px 2px rgba(0,0,0,0.1);
}

/* Compatibility: Legacy list styles */
.mtg-card__price-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mtg-card__price-item {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--mtg-success-color);
}

.mtg-card__price-unavailable {
  color: var(--mtg-text-light);
  font-style: italic;
  font-size: 0.875rem;
  padding: var(--mtg-spacing-xs) 0;
}

/* ==========================================================================
   ARTISTA
   ========================================================================== */

.mtg-card__artist-info {
  font-size: 0.75rem;
  color: var(--mtg-text-light);
  font-style: italic;
  margin-top: var(--mtg-spacing-xs);
  text-align: right;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.mtg-set-gallery__footer {
  text-align: center;
  padding-top: var(--mtg-spacing-lg);
  border-top: 1px solid var(--mtg-border-light);
}

.mtg-set-gallery__credits {
  margin: 0;
}

.mtg-set-gallery__credits small {
  color: var(--mtg-text-light);
}

.mtg-set-gallery__credits a {
  color: var(--mtg-accent-color);
  text-decoration: none;
  transition: color var(--mtg-transition-fast);
}

.mtg-set-gallery__credits a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   STATI DELLA GALLERIA
   ========================================================================== */

.mtg-gallery--loading {
  position: relative;
  opacity: 0.7;
  pointer-events: none;
}

.mtg-gallery--loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 32px;
  height: 32px;
  margin: -16px 0 0 -16px;
  border: 3px solid var(--mtg-border);
  border-top-color: var(--mtg-accent-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  z-index: 10;
}

.mtg-gallery-error,
.mtg-gallery-empty {
  text-align: center;
  padding: var(--mtg-spacing-xl);
  color: var(--mtg-text-light);
  background-color: var(--mtg-surface);
  border: 1px solid var(--mtg-border-light);
  border-radius: var(--mtg-border-radius);
  margin: var(--mtg-spacing-md) 0;
}

.mtg-gallery-error {
  color: var(--mtg-error-color);
  border-color: var(--mtg-error-color);
  background-color: rgba(220, 38, 38, 0.1);
}

/* ==========================================================================
   ANIMAZIONI
   ========================================================================== */

@keyframes shimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

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

@keyframes fadeIn {
  from { 
    opacity: 0; 
    transform: translateY(20px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

.mtg-card {
  animation: fadeIn 0.5s ease-out;
}

/* ==========================================================================
   ACCESSIBILITÀ
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .mtg-set-gallery *,
  .mtg-set-gallery *::before,
  .mtg-set-gallery *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .mtg-card:hover {
    transform: none;
  }
  
  .mtg-card__image--loading {
    animation: none;
    background: var(--mtg-surface);
  }
}

.screen-reader-text {
  clip: rect(1px, 1px, 1px, 1px);
  position: absolute !important;
  height: 1px;
  width: 1px;
  overflow: hidden;
}

/* Focus visible per tastiera */
.mtg-set-gallery__rarity-button:focus-visible,
.mtg-card:focus-visible {
  outline: 2px solid var(--mtg-focus-outline);
  outline-offset: 2px;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --mtg-card-width: 240px;
  }
  
  .mtg-set-gallery {
    padding: var(--mtg-spacing-md);
  }
  
  .mtg-cards-grid {
    gap: var(--mtg-spacing-md);
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --mtg-card-width: 200px;
    --mtg-spacing-lg: 1rem;
    --mtg-spacing-xl: 1.5rem;
  }
  
  .mtg-set-gallery {
    padding: var(--mtg-spacing-sm);
  }
  
  .mtg-set-gallery__title {
    font-size: 1.5rem;
  }
  
  .mtg-set-gallery__description {
    font-size: 1rem;
  }
  
  .mtg-set-gallery__rarity-group {
    flex-direction: column;
    align-items: center;
  }
  
  .mtg-set-gallery__rarity-button {
    width: 100%;
    max-width: 200px;
    justify-content: center;
  }
  
  .mtg-cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--mtg-spacing-sm);
  }
}

/* Mobile piccolo */
@media (max-width: 480px) {
  :root {
    --mtg-card-width: 140px;
  }
  
  .mtg-cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }
  
  .mtg-card__content {
    padding: var(--mtg-spacing-sm);
  }
  
  .mtg-card__title {
    font-size: 0.875rem;
  }
  
  .mtg-card__type {
    font-size: 0.75rem;
  }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
  .mtg-set-gallery {
    box-shadow: none;
    border: 1px solid #000;
  }
  
  .mtg-set-gallery__filters {
    display: none;
  }
  
  .mtg-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
  
  .mtg-card:hover {
    transform: none;
    box-shadow: none;
  }
  
  .mtg-set-gallery__credits a {
    color: #000;
    text-decoration: underline;
  }
}

/* ==========================================================================
   DARK MODE SUPPORT
   ========================================================================== */

@media (prefers-color-scheme: dark) {
  :root {
    --mtg-primary-color: #e2e8f0;
    --mtg-secondary-color: #cbd5e1;
    --mtg-text-color: #e2e8f0;
    --mtg-text-light: #94a3b8;
    --mtg-background: #0f172a;
    --mtg-surface: #1e293b;
    --mtg-border: #334155;
    --mtg-border-light: #475569;
    --mtg-hover-bg: #334155;
    --mtg-active-bg: #475569;
  }
  
  .mtg-card__image-placeholder {
    background-color: var(--mtg-surface);
  }
  
  .mtg-card__image-error {
    background-color: rgba(15, 23, 42, 0.9);
    color: #fca5a5;
  }
  
  /* Colori rarità per dark mode (più brillanti) */
  :root {
    --mtg-common: #FFFFFF;     /* Bianco per Common in dark mode */
    --mtg-uncommon: #E8E8E8;   /* Argento chiaro per Uncommon */
    --mtg-rare: #FFD700;       /* Oro brillante per Rare */
    --mtg-mythic: #FF6B35;     /* Rosso-arancione brillante per Mythic */
  }
}

/* ==========================================================================
   HIGH CONTRAST MODE
   ========================================================================== */

@media (prefers-contrast: high) {
  :root {
    --mtg-border: #000000;
    --mtg-border-light: #666666;
    --mtg-text-color: #000000;
    --mtg-background: #ffffff;
  }
  
  .mtg-card {
    border-width: 2px;
  }
  
  .mtg-set-gallery__rarity-button {
    border-width: 2px;
  }
  
  /* Rarità in high contrast mode */
  .mtg-card__rarity {
    border-width: 3px;
    font-weight: 900;
  }
}