/* ============================================
   GAME PAGE STYLES
   Penta Organization - Memory Card Game
   ============================================ */

/* ===================
   GAME SECTION
   =================== */
.game-section {
  min-height: calc(100vh - var(--header-height));
  padding-top: calc(var(--header-height) + var(--space-2xl));
  padding-bottom: var(--space-3xl);
  display: flex;
  flex-direction: column;
}

/* ===================
   GAME HEADER
   =================== */
.game-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.game-title {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: var(--space-md) 0 var(--space-sm);
  line-height: var(--line-height-tight);
}

.game-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin: 0;
}

@media (min-width: 768px) {
  .game-title {
    font-size: var(--text-5xl);
  }
}

/* ===================
   GAME STATS
   =================== */
.game-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.game-stat {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-sm) var(--space-lg);
  transition: all var(--transition-normal);
}

.game-stat:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.game-stat__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  color: white;
}

.game-stat__icon svg {
  width: 18px;
  height: 18px;
}

.game-stat__content {
  display: flex;
  flex-direction: column;
}

.game-stat__value {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: 1;
}

.game-stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

/* ===================
   GAME CONTROLS
   =================== */
.game-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.game-controls .btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.game-controls .btn svg {
  width: 18px;
  height: 18px;
}

/* ===================
   GAME BOARD
   =================== */
.game-board {
  display: grid;
  gap: var(--space-sm);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  /* Mobile: 3 columns (fits 12 cards - but we use 16, so 4x4 for mobile too) */
  grid-template-columns: repeat(4, 1fr);
  perspective: 1000px;
}

@media (min-width: 480px) {
  .game-board {
    gap: var(--space-md);
  }
}

@media (min-width: 640px) {
  .game-board {
    gap: var(--space-lg);
    max-width: 700px;
  }
}

/* Board Placeholder */
.game-board__placeholder {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-4xl) var(--space-xl);
  background: var(--color-bg-secondary);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-2xl);
  text-align: center;
}

.game-board__placeholder-icon {
  color: var(--color-text-muted);
  opacity: 0.5;
}

.game-board__placeholder p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  margin: 0;
}

.game-board--active .game-board__placeholder {
  display: none;
}

/* ===================
   GAME CARD
   =================== */
.game-card {
  position: relative;
  aspect-ratio: 1;
  cursor: pointer;
  perspective: 1000px;
  transform-style: preserve-3d;
}

.game-card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.5s ease;
  will-change: transform;
}

.game-card--flipped .game-card__inner {
  transform: rotateY(180deg);
}

.game-card__front,
.game-card__back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xl);
  border: 2px solid var(--color-border);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

/* Card Front (Hidden by default - shows logo/pattern) */
.game-card__front {
  background: var(--gradient-primary);
  z-index: 2;
}

.game-card__front::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.1) 0%, transparent 50%);
  border-radius: inherit;
}

.game-card__logo {
  width: 50%;
  height: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.9;
}

.game-card__logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

/* Card Back (Shows emoji icon) */
.game-card__back {
  background: var(--color-bg-secondary);
  transform: rotateY(180deg);
}

.game-card__emoji {
  font-size: 2.5rem;
  line-height: 1;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

@media (min-width: 480px) {
  .game-card__emoji {
    font-size: 3rem;
  }
}

@media (min-width: 640px) {
  .game-card__emoji {
    font-size: 3.5rem;
  }
}

.game-card__label {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
  text-align: center;
  font-weight: var(--font-weight-medium);
}

@media (max-width: 479px) {
  .game-card__label {
    display: none;
  }
}

/* Card States */
.game-card:hover:not(.game-card--flipped):not(.game-card--matched) .game-card__front {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-glow);
}

.game-card--matched .game-card__back {
  border-color: var(--color-success);
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(34, 197, 94, 0.1) 100%);
}

.game-card--matched {
  cursor: default;
  pointer-events: none;
}

/* Match Animation */
.game-card--matched .game-card__inner {
  animation: matchPulse 0.6s ease;
}

@keyframes matchPulse {
  0%, 100% {
    transform: rotateY(180deg) scale(1);
  }
  50% {
    transform: rotateY(180deg) scale(1.08);
  }
}

/* Wrong Match Animation */
.game-card--wrong .game-card__back {
  border-color: var(--color-error);
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: rotateY(180deg) translateX(0); }
  20% { transform: rotateY(180deg) translateX(-6px); }
  40% { transform: rotateY(180deg) translateX(6px); }
  60% { transform: rotateY(180deg) translateX(-4px); }
  80% { transform: rotateY(180deg) translateX(4px); }
}

/* Focus State for Accessibility */
.game-card:focus {
  outline: none;
}

.game-card:focus-visible .game-card__front,
.game-card:focus-visible .game-card__back {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

/* ===================
   GAME BACK LINK
   =================== */
.game-back {
  text-align: center;
  margin-top: auto;
  padding-top: var(--space-xl);
}

.game-back .btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.game-back .btn svg {
  width: 18px;
  height: 18px;
}

/* ===================
   VICTORY MODAL
   =================== */
.game-modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.game-modal[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.game-modal__backdrop {
  position: absolute;
  inset: 0;
  background: var(--overlay-heavy);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.game-modal__content {
  position: relative;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl) var(--space-xl);
  max-width: 450px;
  width: 100%;
  text-align: center;
  transform: translateY(20px) scale(0.95);
  transition: transform var(--transition-normal);
  box-shadow: var(--shadow-2xl);
}

.game-modal[aria-hidden="false"] .game-modal__content {
  transform: translateY(0) scale(1);
}

.game-modal__icon {
  margin-bottom: var(--space-lg);
}

.game-modal__emoji {
  font-size: 4rem;
  display: block;
  animation: bounce 1s ease infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.game-modal__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-sm);
}

.game-modal__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-xl);
}

.game-modal__stats {
  display: flex;
  justify-content: center;
  gap: var(--space-2xl);
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
}

.game-modal__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xxs);
}

.game-modal__stat strong {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.game-modal__stat span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.game-modal__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.game-modal__actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  width: 100%;
}

@media (min-width: 480px) {
  .game-modal__actions {
    flex-direction: row;
    justify-content: center;
  }

  .game-modal__actions .btn {
    width: auto;
  }
}

/* ===================
   REDUCED MOTION
   =================== */
@media (prefers-reduced-motion: reduce) {
  .game-card__inner {
    transition: none;
  }

  .game-card--matched .game-card__inner,
  .game-card--wrong .game-card__back,
  .game-modal__emoji {
    animation: none;
  }

  .game-modal,
  .game-modal__content {
    transition: none;
  }
}