:root {
  /* Color Palette - Deep Industrial & Chrome */
  --bg-primary: #0a0a0c;
  --bg-secondary: #141418;
  --bg-tertiary: #1c1c22;
  --accent-primary: #00f2ff;
  --accent-secondary: #7000ff;
  --text-main: #e0e0e6;
  --text-muted: #888891;
  --border-color: #2d2d35;
  --glass-bg: rgba(20, 20, 24, 0.8);
  --glass-border: rgba(255, 255, 255, 0.1);
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;

  /* Typography */
  --font-display: 'Syncopate', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.5;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Layout Structures */
.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
}

.sidebar {
  width: 280px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: var(--space-md);
  flex-shrink: 0;
}

.main-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background: radial-gradient(circle at top right, #1a1a2e 0%, #0a0a0c 100%);
}

/* Typography & Headings */
h1, h2, h3 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 700;
}

.brand {
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--accent-primary);
}

/* Navigation */
.nav-group {
  margin-bottom: var(--space-lg);
}

.nav-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  margin-bottom: var(--space-sm);
  display: block;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  margin-bottom: 4px;
}

.nav-link:hover, .nav-link.active {
  background: rgba(255, 255, 255, 0.05);
  color: var(--accent-primary);
}

.nav-link svg {
  width: 20px;
  height: 20px;
}

/* Top Bar */
.top-bar {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--glass-bg);
}

.search-bar {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 400px;
}

.search-bar input {
  background: transparent;
  border: none;
  color: var(--text-main);
  outline: none;
  width: 100%;
}

/* Grid & Cards */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
  padding: var(--space-lg);
}

.asset-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease;
  position: relative;
}

.asset-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-primary);
  box-shadow: 0 10px 30px rgba(0, 242, 255, 0.1);
}

.asset-preview {
  height: 200px;
  background: var(--bg-tertiary);
  position: relative;
  overflow: hidden;
}

.placeholder-image {
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, #1c1c22 25%, #2d2d35 50%, #1c1c22 75%);
  background-size: 200% 200%;
  animation: shimmer 3s infinite linear;
}

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

.asset-info {
  padding: var(--space-md);
}

.asset-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.asset-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.badge {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.65rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.badge-blue { background: rgba(0, 242, 255, 0.1); color: var(--accent-primary); border: 1px solid var(--accent-primary); }
.badge-purple { background: rgba(112, 0, 255, 0.1); color: var(--accent-secondary); border: 1px solid var(--accent-secondary); }

/* Buttons */
.btn {
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.btn-primary:hover {
  filter: brightness(1.2);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.btn-outline:hover {
  background: var(--border-color);
}

/* Filters Header */
.view-header {
  padding: var(--space-lg) var(--space-lg) 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.view-title h1 {
  font-size: 2rem;
  margin-bottom: var(--space-xs);
}

.view-meta {
  color: var(--text-muted); 
  font-size: 0.9rem;
}

.sidebar-footer {
  margin-top: auto;
}

.view-controls {
  display: flex;
  gap: var(--space-sm);
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}