/**
 * Grudge Studio Tier System CSS
 * T1-T8 items share same image but use different borders/backgrounds
 * Higher tiers get gold gradients and glowing effects
 */

:root {
  --tier-1: #8b7355;  /* Bronze */
  --tier-2: #a8a8a8;  /* Silver */
  --tier-3: #4a9eff;  /* Blue */
  --tier-4: #9d4dff;  /* Purple */
  --tier-5: #ff4d4d;  /* Red */
  --tier-6: #ffaa00;  /* Orange */
  --tier-7: #d4a84b;  /* Gold */
  --tier-8: #f0d890;  /* Legendary Gold */
  
  --bg-dark: #0f1419;
  --card-bg: #1a1f2e;
  --border-color: #3d3d3d;
  --text-primary: #e8e6e3;
  --text-dim: #8b8685;
}

/* Base item card with image */
.item-card {
  position: relative;
  background: var(--card-bg);
  border-radius: 12px;
  padding: 12px;
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
  overflow: hidden;
}

.item-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

/* Item image container - same image for all tiers */
.item-image-container {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 8px;
}

.item-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.item-card:hover .item-image {
  transform: scale(1.1);
}

/* Tier-specific borders and backgrounds */
.item-card[data-tier="1"] .item-image-container {
  border: 3px solid var(--tier-1);
  background: linear-gradient(135deg, rgba(139, 115, 85, 0.15), rgba(139, 115, 85, 0.05));
}

.item-card[data-tier="2"] .item-image-container {
  border: 3px solid var(--tier-2);
  background: linear-gradient(135deg, rgba(168, 168, 168, 0.15), rgba(168, 168, 168, 0.05));
}

.item-card[data-tier="3"] .item-image-container {
  border: 3px solid var(--tier-3);
  background: linear-gradient(135deg, rgba(74, 158, 255, 0.15), rgba(74, 158, 255, 0.05));
  box-shadow: 0 0 10px rgba(74, 158, 255, 0.3);
}

.item-card[data-tier="4"] .item-image-container {
  border: 3px solid var(--tier-4);
  background: linear-gradient(135deg, rgba(157, 77, 255, 0.2), rgba(157, 77, 255, 0.05));
  box-shadow: 0 0 12px rgba(157, 77, 255, 0.4);
}

.item-card[data-tier="5"] .item-image-container {
  border: 3px solid var(--tier-5);
  background: linear-gradient(135deg, rgba(255, 77, 77, 0.2), rgba(255, 77, 77, 0.05));
  box-shadow: 0 0 14px rgba(255, 77, 77, 0.5);
}

.item-card[data-tier="6"] .item-image-container {
  border: 3px solid var(--tier-6);
  background: linear-gradient(135deg, rgba(255, 170, 0, 0.25), rgba(255, 170, 0, 0.08));
  box-shadow: 0 0 16px rgba(255, 170, 0, 0.5);
}

.item-card[data-tier="7"] .item-image-container {
  border: 4px solid var(--tier-7);
  background: linear-gradient(135deg, rgba(212, 168, 75, 0.3), rgba(212, 168, 75, 0.1));
  box-shadow: 0 0 18px rgba(212, 168, 75, 0.6);
  animation: pulse-gold 2s infinite;
}

.item-card[data-tier="8"] .item-image-container {
  border: 4px solid var(--tier-8);
  background: linear-gradient(135deg, rgba(240, 216, 144, 0.35), rgba(240, 216, 144, 0.15));
  box-shadow: 0 0 24px rgba(240, 216, 144, 0.8), 0 0 48px rgba(240, 216, 144, 0.4);
  animation: pulse-legendary 3s infinite;
  position: relative;
}

/* Legendary tier shimmer effect */
.item-card[data-tier="8"] .item-image-container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 30%,
    rgba(255, 255, 255, 0.3) 50%,
    transparent 70%
  );
  animation: shimmer 3s infinite;
  pointer-events: none;
}

/* Tier badge */
.tier-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: bold;
  z-index: 10;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
}

.tier-badge.tier-1 {
  background: linear-gradient(135deg, var(--tier-1), #6b5545);
  color: #fff;
}

.tier-badge.tier-2 {
  background: linear-gradient(135deg, var(--tier-2), #888);
  color: #fff;
}

.tier-badge.tier-3 {
  background: linear-gradient(135deg, var(--tier-3), #3a7ecc);
  color: #fff;
}

.tier-badge.tier-4 {
  background: linear-gradient(135deg, var(--tier-4), #7d3dcc);
  color: #fff;
}

.tier-badge.tier-5 {
  background: linear-gradient(135deg, var(--tier-5), #cc3d3d);
  color: #fff;
}

.tier-badge.tier-6 {
  background: linear-gradient(135deg, var(--tier-6), #cc8a00);
  color: #fff;
}

.tier-badge.tier-7 {
  background: linear-gradient(135deg, var(--tier-7), #b48b3b);
  color: #000;
  box-shadow: 0 2px 8px rgba(212, 168, 75, 0.5);
}

.tier-badge.tier-8 {
  background: linear-gradient(135deg, var(--tier-8), #d4a84b);
  color: #000;
  box-shadow: 0 2px 12px rgba(240, 216, 144, 0.8);
  animation: pulse-badge 2s infinite;
}

/* Item name and metadata */
.item-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

.item-meta {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

/* Tier-colored item names for high tiers */
.item-card[data-tier="7"] .item-name {
  background: linear-gradient(135deg, var(--tier-7), #f0d890);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}

.item-card[data-tier="8"] .item-name {
  background: linear-gradient(135deg, var(--tier-8), #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
  animation: text-shimmer 3s infinite;
}

/* Loading skeleton for images */
.item-image-skeleton {
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #2a2a2a 25%, #333 50%, #2a2a2a 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

/* Animations */
@keyframes pulse-gold {
  0%, 100% {
    box-shadow: 0 0 18px rgba(212, 168, 75, 0.6);
  }
  50% {
    box-shadow: 0 0 24px rgba(212, 168, 75, 0.8);
  }
}

@keyframes pulse-legendary {
  0%, 100% {
    box-shadow: 0 0 24px rgba(240, 216, 144, 0.8), 0 0 48px rgba(240, 216, 144, 0.4);
  }
  50% {
    box-shadow: 0 0 32px rgba(240, 216, 144, 1), 0 0 64px rgba(240, 216, 144, 0.6);
  }
}

@keyframes shimmer {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes pulse-badge {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes text-shimmer {
  0%, 100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.3);
  }
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Grid layout for items */
.items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .items-grid {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 12px;
  }
  
  .item-card {
    padding: 8px;
  }
  
  .item-name {
    font-size: 0.8rem;
  }
  
  .item-meta {
    font-size: 0.7rem;
  }
}

/* Filter controls */
.filter-controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.filter-btn {
  padding: 8px 16px;
  border: 2px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-primary);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.85rem;
  font-weight: 600;
}

.filter-btn:hover {
  border-color: var(--tier-7);
  background: rgba(212, 168, 75, 0.1);
}

.filter-btn.active {
  border-color: var(--tier-7);
  background: linear-gradient(135deg, var(--tier-7), #b48b3b);
  color: #000;
}

/* Tier filter buttons */
.tier-filter {
  display: flex;
  gap: 8px;
  align-items: center;
}

.tier-filter-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: bold;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s;
}

.tier-filter-btn[data-tier="1"] { border-color: var(--tier-1); color: var(--tier-1); }
.tier-filter-btn[data-tier="2"] { border-color: var(--tier-2); color: var(--tier-2); }
.tier-filter-btn[data-tier="3"] { border-color: var(--tier-3); color: var(--tier-3); }
.tier-filter-btn[data-tier="4"] { border-color: var(--tier-4); color: var(--tier-4); }
.tier-filter-btn[data-tier="5"] { border-color: var(--tier-5); color: var(--tier-5); }
.tier-filter-btn[data-tier="6"] { border-color: var(--tier-6); color: var(--tier-6); }
.tier-filter-btn[data-tier="7"] { border-color: var(--tier-7); color: var(--tier-7); }
.tier-filter-btn[data-tier="8"] { border-color: var(--tier-8); color: var(--tier-8); }

.tier-filter-btn.active {
  background: var(--tier-7);
  color: #000;
  border-color: var(--tier-7);
  transform: scale(1.1);
}

.tier-filter-btn[data-tier="1"].active { background: var(--tier-1); border-color: var(--tier-1); }
.tier-filter-btn[data-tier="2"].active { background: var(--tier-2); border-color: var(--tier-2); }
.tier-filter-btn[data-tier="3"].active { background: var(--tier-3); border-color: var(--tier-3); }
.tier-filter-btn[data-tier="4"].active { background: var(--tier-4); border-color: var(--tier-4); }
.tier-filter-btn[data-tier="5"].active { background: var(--tier-5); border-color: var(--tier-5); }
.tier-filter-btn[data-tier="6"].active { background: var(--tier-6); border-color: var(--tier-6); }
.tier-filter-btn[data-tier="7"].active { background: var(--tier-7); border-color: var(--tier-7); }
.tier-filter-btn[data-tier="8"].active { background: var(--tier-8); border-color: var(--tier-8); }