* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  min-height: 100vh;
  color: #333;
}

.container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 20px;
}

/* Steam Banner */
.steam-banner {
  margin-bottom: 30px;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  position: relative;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.steam-banner.hidden {
  display: none;
}

.banner-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  width: 35px;
  height: 35px;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  z-index: 10;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.banner-close:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.6);
  transform: scale(1.1);
}

/* Header */
.header {
  text-align: center;
  color: white;
  margin-bottom: 40px;
  padding: 40px 20px;
}

.header h1 {
  font-size: 3.5em;
  margin-bottom: 10px;
  text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
  font-weight: 700;
}

.header .subtitle {
  font-size: 1.2em;
  opacity: 0.95;
  font-weight: 300;
}

/* Category Tabs */
.category-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.category-tab {
  background: rgba(255, 255, 255, 0.2);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  padding: 12px 24px;
  border-radius: 25px;
  border: 2px solid transparent;
  color: white;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.category-tab:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.category-tab.active {
  background: rgba(255, 255, 255, 0.4);
  border-color: white;
}

/* Stats Bar */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.stat-card {
  background: rgba(255, 255, 255, 0.25);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 20px 40px;
  border-radius: 15px;
  text-align: center;
  min-width: 150px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.stat-number {
  font-size: 2.5em;
  font-weight: 700;
  color: white;
  margin-bottom: 5px;
}

.stat-label {
  font-size: 0.9em;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Controls */
.controls {
  background: rgba(255, 255, 255, 0.1);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  padding: 25px;
  border-radius: 15px;
  margin-bottom: 30px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.search-container {
  margin-bottom: 20px;
}

.controls-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.search-input {
  width: 100%;
  padding: 15px 20px;
  font-size: 1.1em;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.3s;
  background: rgba(255, 255, 255, 0.15);
  color: white;
}

.search-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.search-input:focus {
  border-color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.2);
}

.filter-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.sort-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sort-label {
  color: white;
  font-weight: 600;
  font-size: 1em;
}

.sort-select {
  padding: 10px 20px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border-radius: 10px;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  outline: none;
}

.sort-select:hover,
.sort-select:focus {
  border-color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.2);
}

.sort-select option {
  background: #1a1a2e;
  color: white;
}

.filter-btn {
  padding: 10px 25px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border-radius: 25px;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.6);
}

.filter-btn.active {
  background: rgba(255, 255, 255, 0.3);
  border-color: white;
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.item-card {
  background: rgba(255, 255, 255, 0.1);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.item-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.5);
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.4);
}

.item-card.hidden {
  display: none;
}

.item-image-container {
  width: 100%;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  border-radius: 8px;
  margin-bottom: 15px;
  position: relative;
}

.item-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.item-image.loading {
  opacity: 0.3;
}

.image-error {
  text-align: center;
  color: #e74c3c;
  font-size: 0.9em;
  font-weight: 500;
}

.item-name {
  text-align: center;
  font-weight: 600;
  color: white;
  font-size: 1em;
  word-wrap: break-word;
  line-height: 1.4;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

/* Loading Spinner */
.loading {
  text-align: center;
  color: white;
  padding: 60px 20px;
}

.spinner {
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid white;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading p {
  font-size: 1.2em;
  font-weight: 500;
}

/* Error Message */
.error-message {
  background: rgba(231, 76, 60, 0.9);
  color: white;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  margin-bottom: 20px;
  font-weight: 500;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  padding-top: 60px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.9);
  overflow: auto;
}

.modal-content {
  margin: auto;
  display: block;
  max-width: 80%;
  max-height: 80%;
  object-fit: contain;
}

.modal-caption {
  margin: 20px auto;
  text-align: center;
  color: white;
  font-size: 1.5em;
  font-weight: 600;
  max-width: 80%;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 40px;
  color: white;
  font-size: 50px;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

.modal-close:hover {
  color: #bbb;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: rgba(255, 255, 255, 0.2);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.4);
  color: white;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: white;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}

/* Footer */
.footer {
  background: rgba(0, 0, 0, 0.3);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: white;
  margin-top: 60px;
  padding: 40px 20px;
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  max-width: 1400px;
  margin: 0 auto;
}

.footer-section h3 {
  color: white;
  font-size: 1.3em;
  margin-bottom: 15px;
  font-weight: 600;
  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
  padding-bottom: 10px;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: color 0.3s;
  font-size: 1.05em;
}

.footer-links a:hover {
  color: white;
  text-decoration: underline;
}

.disclaimer,
.copyright {
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
  margin-bottom: 15px;
  font-size: 0.95em;
}

.disclaimer a {
  color: rgba(255, 255, 255, 0.95);
  text-decoration: underline;
}

.disclaimer strong,
.copyright strong {
  color: white;
  font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
  .header h1 {
    font-size: 2em;
  }

  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
  }

  .stat-card {
    padding: 15px 25px;
    min-width: 120px;
  }

  .stat-number {
    font-size: 2em;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer {
    margin-top: 40px;
    padding: 30px 15px;
  }

  .controls-row {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-buttons {
    justify-content: center;
  }

  .sort-container {
    justify-content: center;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    font-size: 20px;
  }
}