:root {
  --background-color: #111118;
  --primary-color: #1c1c24;
  --border-color: #2a2a38;
  --text-color: #e8e8f0;
  --text-color-muted: #8a8a9e;
  --accent-color: #9c4dff;
  --accent-hover-color: #823ae0;
  --delete-color: #ff4d6d;
  --edit-color: #4d9cff;
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.4);
  --transition-speed: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

#interactive-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

body { 
  margin: 0; 
  background-color: var(--background-color);
  background-image: radial-gradient(circle at 15% 25%, rgba(156, 77, 255, 0.1), transparent 40%),
                    radial-gradient(circle at 85% 75%, rgba(156, 77, 255, 0.1), transparent 40%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; 
  color: var(--text-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.loading .page-container {
  opacity: 0;
  visibility: hidden;
}

.page-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: opacity 0.3s ease-in-out;
}

main {
  flex-grow: 1;
}

.header-wrapper {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 16px 32px;
  transition: var(--transition-speed);
}

.main-header { 
  max-width: 1400px;
  margin: 0 auto;
  background-color: var(--primary-color);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  border-radius: 14px;
  padding: 0 24px; 
  height: 70px; 
  display: flex; 
  align-items: center; 
  justify-content: space-between; 
  transition: var(--transition-speed);
}

.main-header.scrolled {
  background-color: rgba(28, 28, 36, 0.7);
  backdrop-filter: blur(12px);
}

.header-title { 
  font-size: 24px; 
  font-weight: 800; 
  user-select: none; 
  color: var(--text-color);
  text-decoration: none;
  transition: color var(--transition-speed);
}
.header-title:hover {
  color: var(--accent-color);
}

.header-actions { display: flex; align-items: center; gap: 16px; }

.btn { 
  border: none; padding: 10px 20px; border-radius: 8px; font-weight: 600; 
  font-size: 14px; cursor: pointer; color: white; text-decoration: none; 
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; transition: var(--transition-speed); 
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: scale(0.96); }

.filter-button { background-color: var(--accent-color); box-shadow: 0 4px 15px -5px var(--accent-color); }
.filter-button:hover { background-color: var(--accent-hover-color); box-shadow: 0 4px 20px -5px var(--accent-color); }
#discord-button { background-color: var(--primary-color); border: 1px solid var(--border-color); }
#discord-button:hover { background-color: var(--border-color); }
#logout-button { background-color: #4B5563; }
#logout-button:hover { background-color: #374151; }

.controls-container { max-width: 1400px; margin: 0 auto; padding: 16px 32px 32px; display: flex; gap: 16px; align-items: center; }
.search-input { flex-grow: 1; height: 50px; background-color: var(--primary-color); border: 1px solid var(--border-color); border-radius: 10px; color: var(--text-color); padding: 0 20px; font-size: 16px; transition: var(--transition-speed); }
.search-input:focus { outline: none; border-color: var(--accent-color); box-shadow: 0 0 0 4px rgba(156, 77, 255, 0.2); }
.search-input::placeholder { color: var(--text-color-muted); }
.filter-container { position: relative; }
.filter-button { height: 50px; }

.filter-dropdown { 
  display: none; position: absolute; top: calc(100% + 8px); right: 0; 
  background-color: var(--primary-color); border: 1px solid var(--border-color); 
  border-radius: 14px; z-index: 110; width: max-content;
  max-width: calc(100vw - 40px);
  box-shadow: var(--shadow-lg);
  opacity: 0; transform: translateY(-10px) scale(0.98);
  transition: opacity 0.2s ease, transform 0.2s ease; 
  overflow: hidden; padding: 16px 20px 20px;
}
.filter-dropdown.show { display: block; opacity: 1; transform: translateY(0) scale(1); }
.filter-dropdown-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 4px 8px 16px; border-bottom: 1px solid var(--border-color);
  margin-bottom: 16px;
}
.filter-dropdown-header h3 { margin: 0; font-size: 16px; font-weight: 600; white-space: nowrap; }
.filter-clear-btn {
  background: none; border: none; color: var(--text-color-muted); font-size: 13px;
  font-weight: 500; cursor: pointer; padding: 4px 8px; border-radius: 6px;
  transition: var(--transition-speed); white-space: nowrap;
}
.filter-clear-btn:hover { background-color: var(--border-color); color: var(--text-color); }
.filter-dropdown-content { display: flex; gap: 16px; }
.filter-column { padding: 0 8px; }
.filter-column:not(:last-child) { border-right: 1px solid var(--border-color); }
.filter-column h4 { 
  margin: 0 0 16px 0; font-size: 13px; text-transform: uppercase; 
  color: var(--text-color-muted); font-weight: 600; letter-spacing: 0.5px; 
  display: flex; align-items: center; gap: 8px; white-space: nowrap;
}
.filter-column h4 svg { width: 16px; height: 16px; fill: currentColor; flex-shrink: 0; }
.filter-column .buttons-wrapper { display: flex; flex-direction: column; gap: 6px; }
.filter-column button { display: block; width: 100%; padding: 8px 12px; background: none; border: none; border-radius: 8px; color: var(--text-color); text-align: left; cursor: pointer; font-size: 14px; font-weight: 500; transition: var(--transition-speed); white-space: nowrap; }
.filter-column button:hover { background-color: var(--border-color); color: white; }
.filter-column button.active { background-color: var(--accent-color); color: white; font-weight: 600; }
.price-input-group { display: flex; gap: 10px; align-items: center; }
.price-input {
  width: 80px; padding: 10px; border-radius: 8px;
  background-color: var(--background-color); border: 1px solid var(--border-color);
  color: var(--text-color); font-size: 14px;
}
.price-input:focus { outline: none; border-color: var(--accent-color); }

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

#items-container { max-width: 1400px; margin: 0 auto 40px; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 32px; padding: 0 32px; }

.item-card, .add-item-card {
  background: var(--primary-color); border-radius: 16px; overflow: hidden; 
  display: flex; flex-direction: column; user-select: none; 
  transition: var(--transition-speed); position: relative; 
  border: 1px solid var(--border-color); opacity: 0;
  animation: fadeInUp 0.5s ease-out forwards; animation-delay: var(--delay, 0s);
}
.item-card:hover, .add-item-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent-color); }
.add-item-card { align-items: center; justify-content: center; cursor: pointer; border: 2px dashed var(--border-color); background: transparent; box-shadow: none; min-height: 400px; }
.add-item-card:hover { border-style: solid; }
.add-item-card svg { width: 60px; height: 60px; color: var(--border-color); transition: var(--transition-speed); }
.add-item-card:hover svg { color: var(--accent-color); transform: scale(1.1); }

.item-image-wrapper { position: relative; background-color: #fff; }
.item-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; }

.admin-buttons-container { 
  position: absolute; top: 12px; left: 12px; display: flex; gap: 8px;
}
.admin-button { 
  border: none; border-radius: 50%; width: 32px; height: 32px; font-size: 16px; 
  cursor: pointer; display: flex; align-items: center; justify-content: center; 
  z-index: 5; transition: var(--transition-speed); opacity: 0; transform: scale(0.8) translateY(5px); 
  color: white;
}
.item-card:hover .admin-button { opacity: 1; transform: scale(1) translateY(0); }
.admin-button:hover { transform: scale(1.15) !important; }
.admin-delete-button { background-color: var(--delete-color); }
.admin-edit-button { background-color: var(--edit-color); transition-delay: 50ms; }

.item-info { padding: 20px; display: flex; flex-direction: column; flex-grow: 1; background: var(--primary-color); }
.item-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 8px; gap: 8px;}
.item-title-wrapper { display: flex; align-items: center; gap: 8px; flex-shrink: 1; min-width: 0; }
.item-title { font-weight: 600; font-size: 18px; color: var(--text-color); margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-category-tag { background-color: var(--border-color); color: var(--text-color-muted); font-size: 11px; font-weight: 600; text-transform: uppercase; padding: 4px 8px; border-radius: 6px; white-space: nowrap; flex-shrink: 0; }
.item-tags-container { display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap; }
.item-batch-tag { background-color: var(--border-color); color: var(--text-color-muted); font-size: 11px; font-weight: 600; padding: 3px 8px; border-radius: 6px; text-transform: uppercase;}
.item-price-container { margin-bottom: 20px; }
.item-price { font-weight: 700; font-size: 20px; color: var(--text-color); margin: 0; }
.item-price-converted { font-size: 13px; color: var(--text-color-muted); margin-top: 4px; }

.item-buy-button {
  margin-top: auto;
  display: block;
  text-align: center;
  background-color: var(--border-color);
  color: var(--text-color);
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition-speed);
  border: none;
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
}
.item-buy-button:hover {
  background-color: var(--accent-color);
  color: white;
}
.item-buy-button:active {
  transform: scale(0.97);
}
.item-buy-button.disabled {
  background-color: #222;
  color: #555;
  cursor: not-allowed;
}

@keyframes new-glow {
  0%, 100% { box-shadow: 0 0 3px 0px rgba(77, 255, 154, 0.7); }
  50% { box-shadow: 0 0 10px 2px rgba(77, 255, 154, 0.5); }
}
.item-new-badge {
  background-color: #4DFF9A;
  color: #111;
  font-size: 10px;
  font-weight: 800;
  padding: 3px 7px;
  border-radius: 6px;
  text-transform: uppercase;
  flex-shrink: 0;
  animation: new-glow 2.5s ease-in-out infinite;
}

.modal-overlay { display: none; position: fixed; z-index: 1100; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(5px); justify-content: center; align-items: center; opacity: 0; transition: opacity 0.2s ease; padding: 16px; }
.modal-overlay.show { opacity: 1; }
.modal-content { background: var(--primary-color); padding: 30px 35px; border-radius: 16px; width: 100%; max-width: 380px; box-shadow: var(--shadow-lg); position: relative; transform: scale(0.95); transition: transform 0.2s ease; border: 1px solid var(--border-color); }
.modal-overlay.show .modal-content, .modal-overlay.show .detail-modal-content { transform: scale(1); }
.modal-content h2 { color: var(--text-color); font-weight: 800; font-size: 24px; margin: 0 0 24px 0; text-align: center; }
.modal-content .form-group { margin-bottom: 18px; }
.modal-content label { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 500; color: var(--text-color-muted); }
.modal-content input, .modal-content select, .modal-content textarea { width: 100%; box-sizing: border-box; padding: 12px 16px; border-radius: 10px; border: 1px solid var(--border-color); background-color: var(--background-color); color: var(--text-color); font-size: 16px; transition: var(--transition-speed); font-family: 'Inter', sans-serif; resize: vertical; }
.modal-content input:focus, .modal-content select:focus, .modal-content textarea:focus { outline: none; border-color: var(--accent-color); box-shadow: 0 0 0 3px rgba(156, 77, 255, 0.3); }
.tag-selection { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.tag-selection label { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-color); cursor: pointer; }
.tag-selection input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent-color); }
.modal-actions { display: flex; gap: 12px; margin-top: 24px; }
.modal-actions button { flex-grow: 1; padding: 14px; border-radius: 10px; font-weight: 700; font-size: 16px; }
.modal-actions .btn-primary { background-color: var(--accent-color); color: white; }
.modal-actions .btn-primary:hover { background-color: var(--accent-hover-color); }
.modal-actions .btn-secondary { background-color: var(--border-color); color: var(--text-color); }
.modal-actions .btn-secondary:hover { background-color: #4b5563; }
.loader { display: none; position: absolute; inset: 0; background: rgba(28, 28, 36, 0.8); backdrop-filter: blur(2px); border-radius: 16px; justify-content: center; align-items: center; }
.spinner { width: 40px; height: 40px; border: 4px solid var(--border-color); border-top-color: var(--accent-color); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.detail-modal-content {
  background: var(--primary-color);
  border-radius: 16px;
  width: 100%;
  max-width: 900px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  position: relative;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.2s ease;
}
.detail-close-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: rgba(28, 28, 36, 0.5);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  color: var(--text-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-speed);
  z-index: 10;
}
.detail-close-btn:hover {
  background-color: var(--accent-color);
  transform: scale(1.1) rotate(90deg);
}
.detail-modal-left {
  padding: 24px;
  display: flex;
  flex-direction: column;
}
.detail-image-wrapper {
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: #fff;
  border-radius: 12px;
  overflow: hidden;
}
#detail-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.detail-tags-categories {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.detail-modal-right {
  display: flex;
  flex-direction: column;
  padding: 32px;
}
#detail-name {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 16px 0;
  color: var(--text-color);
  line-height: 1.2;
}
#detail-desc {
  font-size: 15px;
  color: var(--text-color-muted);
  line-height: 1.6;
  margin: 0;
  flex-grow: 1;
}
.detail-footer {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.detail-price {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-color);
}
.detail-price b {
  font-weight: 800;
}
.detail-buy-button {
  background-color: var(--accent-color);
  box-shadow: 0 4px 15px -5px var(--accent-color);
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
}
.detail-buy-button:hover {
  background-color: var(--accent-hover-color);
  box-shadow: 0 4px 20px -5px var(--accent-color);
  transform: translateY(-3px);
}

.filter-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1200;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.filter-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.filter-panel {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  max-width: 320px;
  background-color: var(--primary-color);
  border-right: 1px solid var(--border-color);
  z-index: 1201;
  transform: translateX(-100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}
.filter-panel.is-open {
  transform: translateX(0);
}

.filter-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}
.filter-panel-header h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}
.filter-panel-close-btn {
  background: none;
  border: none;
  color: var(--text-color-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  transition: var(--transition-speed);
}
.filter-panel-close-btn:hover {
  color: var(--text-color);
  transform: rotate(90deg);
}

.filter-panel-content {
  flex-grow: 1;
  overflow-y: auto;
  padding: 16px;
}
.filter-section {
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
}
.filter-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.filter-section h4 {
  margin: 0 0 12px 4px;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-color-muted);
  font-weight: 600;
  letter-spacing: 0.5px;
}
.filter-section-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-section-buttons button {
  width: auto;
  padding: 8px 14px;
  background: var(--border-color);
  border: none;
  border-radius: 8px;
  color: var(--text-color);
  text-align: left;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition-speed);
}
.filter-section-buttons button:hover {
  background-color: #3f3f4d;
}
.filter-section-buttons button.active {
  background-color: var(--accent-color);
  color: white;
  font-weight: 600;
}

.filter-panel-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
}
.filter-panel-apply-btn {
  width: 100%;
  padding: 14px;
  background-color: var(--accent-color);
  font-size: 16px;
}

.agent-selector {
  position: relative;
}

#agent-button {
  background-color: var(--primary-color);
  border: 1px solid var(--border-color);
  min-width: 120px;
}
#agent-button:hover {
  background-color: var(--border-color);
}
.agent-logo {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  object-fit: cover;
}
.agent-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background-color: var(--primary-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  z-index: 110;
  min-width: 180px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(-10px) scale(0.98);
  transition: opacity 0.2s ease, transform 0.2s ease;
  overflow: hidden;
  padding: 8px;
}
.agent-dropdown.show {
  display: block;
  opacity: 1;
  transform: translateY(0) scale(1);
}
.agent-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: none;
  border: none;
  border-radius: 8px;
  width: 100%;
  color: var(--text-color);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition-speed);
}
.agent-option:hover {
  background-color: var(--border-color);
}
.agent-option img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
}

@media (max-width: 768px) {
  .filter-dropdown {
    display: none !important;
  }
  .header-wrapper, main {
    padding-left: 16px;
    padding-right: 16px;
  }
  #items-container {
    padding: 0;
  }
  .controls-container {
      padding: 16px 0 32px;
  }
}