:root {
  --epn-primary: #0f3d5e;
  --epn-secondary: #8c5a4a;
  --epn-accent: #c79a3b;
  --epn-light: #f6f3ef;
  --epn-white: #ffffff;
  --epn-dark: #1a1a2e;
  --epn-gray: #6c757d;
  --epn-border: #dee2e6;
  --epn-shadow: 0 4px 20px rgba(15, 61, 94, 0.12);
  --epn-shadow-hover: 0 8px 30px rgba(15, 61, 94, 0.2);
  --epn-radius: 12px;
  --epn-radius-sm: 8px;
  --epn-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.epn-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 61, 94, 0.6);
  backdrop-filter: blur(4px);
  z-index: 99999;
  animation: epnFadeIn 0.3s ease;
}

.epn-modal.open {
  display: flex;
  align-items: center;
  justify-content: center;
}

.epn-modal-content {
  background: var(--epn-white);
  border-radius: 20px;
  width: 95%;
  max-width: 1400px;
  height: 90vh;
  max-height: 900px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
  animation: epnSlideUp 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.epn-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 2px solid var(--epn-light);
  flex-shrink: 0;
}

.epn-modal-header h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--epn-primary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.epn-modal-header h2 img {
  height: 32px;
  width: auto;
}

.epn-modal-close {
  background: none;
  border: none;
  font-size: 28px;
  color: var(--epn-gray);
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--epn-transition);
}

.epn-modal-close:hover {
  background: var(--epn-light);
  color: var(--epn-primary);
}

.epn-modal-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.epn-sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--epn-light);
  padding: 16px;
  overflow-y: auto;
  border-right: 1px solid var(--epn-border);
}

.epn-sidebar-category {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--epn-radius-sm);
  cursor: pointer;
  transition: var(--epn-transition);
  font-size: 0.9rem;
  color: var(--epn-primary);
  font-weight: 500;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.epn-sidebar-category:hover {
  background: rgba(15, 61, 94, 0.08);
}

.epn-sidebar-category.active {
  background: var(--epn-primary);
  color: var(--epn-white);
}

.epn-sidebar-category .epn-cat-icon {
  width: 24px;
  text-align: center;
  font-size: 1rem;
}

.epn-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.epn-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--epn-border);
  background: var(--epn-white);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.epn-search-wrapper {
  flex: 1;
  min-width: 200px;
  position: relative;
}

.epn-search-wrapper input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border: 2px solid var(--epn-border);
  border-radius: 25px;
  font-size: 0.9rem;
  transition: var(--epn-transition);
  background: var(--epn-light);
}

.epn-search-wrapper input:focus {
  outline: none;
  border-color: var(--epn-accent);
  background: var(--epn-white);
  box-shadow: 0 0 0 3px rgba(199, 154, 59, 0.15);
}

.epn-search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--epn-gray);
}

.epn-toolbar-btn {
  padding: 8px 16px;
  border: none;
  border-radius: 25px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--epn-transition);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.epn-toolbar-btn-primary {
  background: var(--epn-primary);
  color: var(--epn-white);
}

.epn-toolbar-btn-primary:hover {
  background: #0a2d47;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 61, 94, 0.3);
}

.epn-toolbar-btn-outline {
  background: transparent;
  color: var(--epn-primary);
  border: 2px solid var(--epn-primary);
}

.epn-toolbar-btn-outline:hover {
  background: var(--epn-primary);
  color: var(--epn-white);
}

.epn-toolbar-btn-outline.active {
  background: var(--epn-primary);
  color: var(--epn-white);
}

.epn-gallery {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  align-content: start;
}

.epn-gallery.list-view {
  grid-template-columns: 1fr;
}

.epn-card {
  background: var(--epn-white);
  border-radius: var(--epn-radius);
  overflow: hidden;
  box-shadow: var(--epn-shadow);
  transition: var(--epn-transition);
  cursor: pointer;
  position: relative;
  border: 2px solid transparent;
}

.epn-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--epn-shadow-hover);
  border-color: var(--epn-accent);
}

.epn-card:focus-within {
  border-color: var(--epn-accent);
  box-shadow: 0 0 0 3px rgba(199, 154, 59, 0.3);
}

.epn-card-img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
  background: var(--epn-light);
  transition: var(--epn-transition);
}

.epn-card:hover .epn-card-img {
  transform: scale(1.05);
}

.epn-card-svg {
  width: 100%;
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--epn-light);
}

.epn-card-svg svg {
  max-width: 64px;
  max-height: 64px;
  fill: currentColor;
  color: var(--epn-primary);
}

.epn-card-body {
  padding: 10px 12px;
}

.epn-card-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--epn-primary);
  margin: 0 0 4px 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.epn-card-meta {
  font-size: 0.72rem;
  color: var(--epn-gray);
  display: flex;
  align-items: center;
  gap: 8px;
}

.epn-card-actions {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: var(--epn-transition);
}

.epn-card:hover .epn-card-actions {
  opacity: 1;
}

.epn-card-action-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.95);
  color: var(--epn-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: var(--epn-transition);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.epn-card-action-btn:hover {
  background: var(--epn-accent);
  color: var(--epn-white);
}

.epn-card-action-btn.favorited {
  background: #e74c3c;
  color: var(--epn-white);
}

.epn-empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--epn-gray);
}

.epn-empty-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.epn-empty-text {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--epn-primary);
}

.epn-loading {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
}

.epn-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--epn-light);
  border-top-color: var(--epn-primary);
  border-radius: 50%;
  animation: epnSpin 0.8s linear infinite;
}

.epn-preview-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 100000;
  align-items: center;
  justify-content: center;
}

.epn-preview-overlay.open {
  display: flex;
}

.epn-preview-container {
  background: var(--epn-white);
  border-radius: 20px;
  max-width: 800px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 32px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  animation: epnScaleIn 0.3s ease;
}

.epn-preview-img {
  width: 100%;
  max-height: 400px;
  object-fit: contain;
  border-radius: var(--epn-radius);
  background: var(--epn-light);
  margin-bottom: 20px;
}

.epn-preview-svg {
  width: 100%;
  max-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: var(--epn-light);
  border-radius: var(--epn-radius);
  margin-bottom: 20px;
}

.epn-preview-svg svg {
  max-width: 120px;
  max-height: 120px;
}

.epn-preview-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.epn-preview-info-item {
  padding: 10px;
  background: var(--epn-light);
  border-radius: var(--epn-radius-sm);
}

.epn-preview-info-label {
  font-size: 0.75rem;
  color: var(--epn-gray);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.epn-preview-info-value {
  font-size: 0.9rem;
  color: var(--epn-primary);
  font-weight: 500;
  word-break: break-all;
}

.epn-preview-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.epn-btn {
  padding: 12px 24px;
  border: none;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--epn-transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.epn-btn-primary {
  background: var(--epn-primary);
  color: var(--epn-white);
}

.epn-btn-primary:hover {
  background: #0a2d47;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(15, 61, 94, 0.3);
}

.epn-btn-accent {
  background: var(--epn-accent);
  color: var(--epn-white);
}

.epn-btn-accent:hover {
  background: #b8892e;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(199, 154, 59, 0.3);
}

.epn-btn-secondary {
  background: var(--epn-light);
  color: var(--epn-primary);
}

.epn-btn-secondary:hover {
  background: #e5dfd8;
}

.epn-btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.epn-insert-preview {
  margin-top: 16px;
  background: #1a1a2e;
  color: #e0e0e0;
  border-radius: var(--epn-radius-sm);
  padding: 16px;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.8rem;
  max-height: 120px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.epn-toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--epn-primary);
  color: var(--epn-white);
  padding: 14px 24px;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
  z-index: 100001;
  animation: epnSlideRight 0.4s ease;
  font-weight: 500;
}

.epn-filter-chips {
  display: flex;
  gap: 8px;
  padding: 8px 20px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--epn-border);
  background: var(--epn-white);
}

.epn-chip {
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  border: 1px solid var(--epn-border);
  background: var(--epn-white);
  color: var(--epn-gray);
  cursor: pointer;
  transition: var(--epn-transition);
}

.epn-chip:hover {
  border-color: var(--epn-accent);
  color: var(--epn-accent);
}

.epn-chip.active {
  background: var(--epn-accent);
  color: var(--epn-white);
  border-color: var(--epn-accent);
}

.epn-progress {
  height: 4px;
  background: var(--epn-light);
  border-radius: 2px;
  overflow: hidden;
  margin: 8px 0;
}

.epn-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--epn-accent), var(--epn-primary));
  border-radius: 2px;
  transition: width 0.5s ease;
}

.epn-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  padding: 20px;
}

.epn-stat-card {
  background: var(--epn-white);
  border-radius: var(--epn-radius);
  padding: 20px;
  box-shadow: var(--epn-shadow);
  text-align: center;
}

.epn-stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--epn-primary);
}

.epn-stat-label {
  font-size: 0.85rem;
  color: var(--epn-gray);
  margin-top: 4px;
}

.epn-admin-page {
  padding: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.epn-admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.epn-admin-header h1 {
  font-size: 1.8rem;
  color: var(--epn-primary);
  margin: 0;
}

.epn-admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.epn-admin-card {
  background: var(--epn-white);
  border-radius: var(--epn-radius);
  padding: 24px;
  box-shadow: var(--epn-shadow);
  border: 1px solid var(--epn-border);
  transition: var(--epn-transition);
}

.epn-admin-card:hover {
  box-shadow: var(--epn-shadow-hover);
  transform: translateY(-2px);
}

.epn-admin-card h3 {
  font-size: 1.1rem;
  color: var(--epn-primary);
  margin: 0 0 12px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.epn-drag-overlay {
  position: fixed;
  pointer-events: none;
  z-index: 100002;
  opacity: 0.8;
  transform: scale(0.9);
}

.epn-card.dragging {
  opacity: 0.4;
}

.epn-card.drop-target {
  border-color: var(--epn-accent);
  box-shadow: 0 0 0 3px rgba(199, 154, 59, 0.3);
}

@keyframes epnFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes epnSlideUp {
  from { opacity: 0; transform: translateY(30px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes epnScaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes epnSlideRight {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes epnSpin {
  to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .epn-modal-content {
    width: 100%;
    height: 100%;
    max-height: none;
    border-radius: 0;
  }

  .epn-modal-body {
    flex-direction: column;
  }

  .epn-sidebar {
    width: 100%;
    max-height: 120px;
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding: 10px 16px;
    border-right: none;
    border-bottom: 1px solid var(--epn-border);
  }

  .epn-sidebar-category {
    white-space: nowrap;
    flex-shrink: 0;
    padding: 8px 14px;
    font-size: 0.82rem;
  }

  .epn-gallery {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
    padding: 14px;
  }

  .epn-toolbar {
    padding: 10px 14px;
    gap: 8px;
  }

  .epn-preview-info {
    grid-template-columns: 1fr;
  }

  .epn-preview-container {
    padding: 20px;
  }

  .epn-preview-actions {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .epn-gallery {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 8px;
    padding: 10px;
  }

  .epn-card-img,
  .epn-card-svg {
    height: 100px;
  }
}

.epn-dark .epn-modal-content {
  background: #1e1e2e;
  color: #e0e0e0;
}

.epn-dark .epn-modal-header {
  border-color: #2d2d44;
}

.epn-dark .epn-modal-header h2 {
  color: #c79a3b;
}

.epn-dark .epn-sidebar {
  background: #16162a;
  border-color: #2d2d44;
}

.epn-dark .epn-sidebar-category {
  color: #c0c0d0;
}

.epn-dark .epn-sidebar-category:hover {
  background: rgba(199, 154, 59, 0.15);
}

.epn-dark .epn-sidebar-category.active {
  background: #c79a3b;
  color: #1a1a2e;
}

.epn-dark .epn-toolbar {
  background: #1e1e2e;
  border-color: #2d2d44;
}

.epn-dark .epn-search-wrapper input {
  background: #2d2d44;
  border-color: #3d3d5c;
  color: #e0e0e0;
}

.epn-dark .epn-search-wrapper input:focus {
  border-color: #c79a3b;
  background: #1e1e2e;
}

.epn-dark .epn-card {
  background: #2d2d44;
  border-color: #3d3d5c;
}

.epn-dark .epn-card:hover {
  border-color: #c79a3b;
}

.epn-dark .epn-card-title {
  color: #c79a3b;
}

.epn-dark .epn-card-svg {
  background: #1e1e2e;
}

.epn-dark .epn-card-svg svg {
  color: #c79a3b;
}

.epn-dark .epn-card-img {
  background: #1e1e2e;
}

.epn-dark .epn-chip {
  background: #2d2d44;
  border-color: #3d3d5c;
  color: #a0a0b0;
}

.epn-dark .epn-preview-container {
  background: #1e1e2e;
}

.epn-dark .epn-preview-info-item {
  background: #2d2d44;
}

.epn-dark .epn-preview-info-value {
  color: #c79a3b;
}

.epn-dark .epn-insert-preview {
  background: #0d0d1a;
}