:root {
  --everfen-bg-dark: #0a0f0d;
  --everfen-bg-card: #121916;
  --everfen-green-dark: #0d1512;
  --everfen-green-mid: #162220;
  --everfen-green-accent: #1e3830;
  --everfen-gold: #c9a227;
  --everfen-gold-light: #dbb94a;
  --everfen-gold-muted: #8b7429;
  --everfen-text-primary: #f5f5f0;
  --everfen-text-secondary: #a0a89c;
  --everfen-text-muted: #5c6660;
  --status-healthy: #4ade80;
  --status-warning: #fbbf24;
  --status-error: #f87171;
  --status-processing: #60a5fa;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--everfen-bg-dark);
  color: var(--everfen-text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.app-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background-color: var(--everfen-green-dark);
  border-right: 1px solid var(--everfen-green-accent);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--everfen-green-accent);
  text-align: center;
}

.module-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.module-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--everfen-gold);
}

.module-tagline {
  font-size: 0.75rem;
  color: var(--everfen-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.nav-items {
  list-style: none;
  padding: 1rem 0;
  flex-grow: 1;
}

.nav-item a {
  display: flex;
  align-items: center;
  padding: 0.875rem 1.5rem;
  color: var(--everfen-text-secondary);
  transition: all 0.2s ease;
}

.nav-item a:hover {
  background-color: var(--everfen-green-mid);
  color: var(--everfen-text-primary);
}

.nav-item.active a {
  background-color: var(--everfen-green-accent);
  color: var(--everfen-gold);
  border-left: 3px solid var(--everfen-gold);
}

.nav-icon {
  margin-right: 0.75rem;
  font-size: 1.25rem;
}

.main-content {
  flex: 1;
  margin-left: 260px;
  padding: 2rem;
  min-height: 100vh;
}

.page-header {
  margin-bottom: 2rem;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.page-subtitle {
  color: var(--everfen-text-secondary);
}

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: linear-gradient(135deg, var(--everfen-green-mid), var(--everfen-green-dark));
  border: 1px solid var(--everfen-green-accent);
  border-radius: 12px;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--everfen-gold);
}

.stat-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--everfen-text-muted);
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--everfen-gold);
}

.stat-change {
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

.stat-change.positive { color: var(--status-healthy); }
.stat-change.negative { color: var(--status-error); }

.card {
  background-color: var(--everfen-bg-card);
  border: 1px solid var(--everfen-green-accent);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}

.image-card {
  background-color: var(--everfen-green-mid);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.image-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.image-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.image-card-info {
  padding: 0.75rem;
}

.image-card-id {
  font-size: 0.75rem;
  color: var(--everfen-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.image-card-module {
  display: inline-block;
  font-size: 0.625rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
  margin-top: 0.5rem;
}

.module-halcyon { background-color: var(--everfen-green-accent); }
.module-arbor { background-color: var(--everfen-gold-muted); }
.module-sylva { background-color: #3b82f6; }
.module-manual { background-color: var(--everfen-green-accent); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--everfen-gold);
  color: var(--everfen-bg-dark);
}

.btn-primary:hover {
  background-color: var(--everfen-gold-light);
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--everfen-gold);
  color: var(--everfen-gold);
}

.btn-secondary:hover {
  background-color: var(--everfen-gold);
  color: var(--everfen-bg-dark);
}

.upload-zone {
  border: 2px dashed var(--everfen-green-accent);
  border-radius: 12px;
  padding: 3rem;
  text-align: center;
  transition: all 0.2s ease;
  cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--everfen-gold);
  background-color: rgba(201, 162, 39, 0.05);
}

.upload-zone-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.upload-zone-text {
  color: var(--everfen-text-secondary);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--everfen-text-secondary);
}

.form-input,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--everfen-green-mid);
  border: 1px solid var(--everfen-green-accent);
  border-radius: 6px;
  color: var(--everfen-text-primary);
  font-size: 1rem;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--everfen-gold);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

.status-healthy { background-color: rgba(74, 222, 128, 0.2); color: var(--status-healthy); }
.status-processing { background-color: rgba(96, 165, 250, 0.2); color: var(--status-processing); }
.status-error { background-color: rgba(248, 113, 113, 0.2); color: var(--status-error); }

.system-status {
  background-color: var(--everfen-bg-card);
  border: 1px solid var(--everfen-green-accent);
  border-radius: 12px;
  padding: 1.5rem;
}

.status-row {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--everfen-green-mid);
}

.status-row:last-child {
  border-bottom: none;
}

.status-label {
  color: var(--everfen-text-secondary);
}

.status-value {
  font-weight: 500;
}

.status-value.healthy { color: var(--status-healthy); }
.status-value.warning { color: var(--status-warning); }

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background-color: var(--everfen-bg-card);
  border: 1px solid var(--everfen-green-accent);
  border-radius: 12px;
  padding: 2rem;
  max-width: 800px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--everfen-text-muted);
}

.modal-close:hover {
  color: var(--everfen-text-primary);
}

@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    height: auto;
    position: relative;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .stat-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}