/* ============================================
   CARD BACK - Styles pour l'arrière de la carte
   ============================================ */

.card-back {
  width: 320px;
  height: 480px;
  background: #1a1a2e;
  border-radius: 20px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.card-back:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

/* ============================================
   MOTIF DE FOND
   ============================================ */

.back-pattern {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.3;
  pointer-events: none;
  z-index: 1;
}

/* Motif géométrique */
.back-pattern.geometric {
  background-image: repeating-linear-gradient(
      45deg,
      transparent,
      transparent 35px,
      currentColor 35px,
      currentColor 36px
    ),
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 35px,
      currentColor 35px,
      currentColor 36px
    );
}

/* Motif lignes */
.back-pattern.lines {
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 20px,
    currentColor 20px,
    currentColor 21px
  );
}

/* Motif points */
.back-pattern.dots {
  background-image: radial-gradient(circle, currentColor 2px, transparent 2px);
  background-size: 30px 30px;
}

/* Motif grille */
.back-pattern.grid {
  background-image: linear-gradient(currentColor 1px, transparent 1px),
    linear-gradient(90deg, currentColor 1px, transparent 1px);
  background-size: 30px 30px;
}

/* Motif diamants */
.back-pattern.diamonds {
  background-image: linear-gradient(45deg, currentColor 12px, transparent 0),
    linear-gradient(135deg, currentColor 12px, transparent 0),
    linear-gradient(225deg, currentColor 12px, transparent 0),
    linear-gradient(315deg, currentColor 12px, transparent 0);
  background-size: 50px 50px;
  background-position: 0 0, 0 0, 25px 25px, 25px 25px;
}

/* Motif chevrons */
.back-pattern.chevron {
  background-image: linear-gradient(135deg, currentColor 25%, transparent 25%),
    linear-gradient(225deg, currentColor 25%, transparent 25%),
    linear-gradient(45deg, currentColor 25%, transparent 25%),
    linear-gradient(315deg, currentColor 25%, transparent 25%);
  background-size: 40px 40px;
  background-position: 0 0, 20px 0, 20px -20px, 0 -20px;
}

/* Motif zigzag */
.back-pattern.zigzag {
  background-image: linear-gradient(135deg, currentColor 25%, transparent 25%),
    linear-gradient(225deg, currentColor 25%, transparent 25%),
    linear-gradient(315deg, currentColor 25%, transparent 25%),
    linear-gradient(45deg, currentColor 25%, transparent 25%);
  background-size: 30px 30px;
  background-position: 0 0, 15px 0, 15px 15px, 0 15px;
}

/* Motif hexagones */
.back-pattern.hexagons {
  background-image: linear-gradient(
      30deg,
      transparent 40%,
      currentColor 40%,
      currentColor 60%,
      transparent 60%
    ),
    linear-gradient(
      90deg,
      transparent 40%,
      currentColor 40%,
      currentColor 60%,
      transparent 60%
    ),
    linear-gradient(
      150deg,
      transparent 40%,
      currentColor 40%,
      currentColor 60%,
      transparent 60%
    );
  background-size: 52px 30px;
  background-position: 0 0, 26px 15px, 0 30px;
}

/* Motif cercles */
.back-pattern.circles {
  background-image: radial-gradient(
    circle at center,
    currentColor 30%,
    transparent 30%
  );
  background-size: 50px 50px;
}

/* Motif croix */
.back-pattern.crosses {
  background-image: linear-gradient(currentColor 3px, transparent 3px),
    linear-gradient(90deg, currentColor 3px, transparent 3px);
  background-size: 25px 25px;
  background-position: center center;
}

/* Motif vagues */
.back-pattern.waves {
  background-image: radial-gradient(
      ellipse 100% 50% at 50% 0%,
      transparent 40%,
      currentColor 41%,
      currentColor 44%,
      transparent 45%
    ),
    radial-gradient(
      ellipse 100% 50% at 50% 100%,
      transparent 40%,
      currentColor 41%,
      currentColor 44%,
      transparent 45%
    );
  background-size: 80px 40px;
  background-position: 0 0, 40px 20px;
}

/* ============================================
   ICÔNE CENTRALE VERSO
   ============================================ */

.back-center-icon {
  width: 120px;
  height: 120px;
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.back-center-icon svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 8px currentColor);
}

.back-center-icon.glow svg {
  filter: drop-shadow(0 0 15px currentColor) drop-shadow(0 0 25px currentColor);
}

/* ============================================
   TEXTE CENTRAL VERSO
   ============================================ */

.back-center-text {
  font-size: 24px;
  font-weight: bold;
  color: #ffffff;
  text-align: center;
  z-index: 3;
  position: relative;
  letter-spacing: 3px;
  text-transform: uppercase;
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  transition: all 0.3s ease;
}

/* ============================================
   DÉCORATIONS DE COINS
   ============================================ */

.back-corner-decorations {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
}

.corner-decor {
  position: absolute;
  width: 40px;
  height: 40px;
  border-style: solid;
  border-color: #e94560;
  transition: all 0.3s ease;
}

.corner-decor.top-left {
  top: 15px;
  left: 15px;
  border-width: 3px 0 0 3px;
  border-radius: 8px 0 0 0;
}

.corner-decor.top-right {
  top: 15px;
  right: 15px;
  border-width: 3px 3px 0 0;
  border-radius: 0 8px 0 0;
}

.corner-decor.bottom-left {
  bottom: 15px;
  left: 15px;
  border-width: 0 0 3px 3px;
  border-radius: 0 0 0 8px;
}

.corner-decor.bottom-right {
  bottom: 15px;
  right: 15px;
  border-width: 0 3px 3px 0;
  border-radius: 0 0 8px 0;
}

/* ============================================
   ONGLETS
   ============================================ */

.card-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  border-bottom: 2px solid #e0e0e0;
  padding-bottom: 10px;
}

.tab-btn {
  flex: 1;
  padding: 12px 20px;
  background: #f5f5f5;
  border: none;
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
  color: #666;
}

.tab-btn:hover {
  background: #e0e0e0;
  transform: translateY(-2px);
}

.tab-btn.active {
  background: linear-gradient(135deg, #00c27a 0%, #00995c 100%);
  color: white;
  box-shadow: 0 4px 10px rgba(0, 194, 122, 0.3);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}