:root {
  /* Color Palette - Premium Dark Theme */
  --bg-primary: #0b1220;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-blue: #3b82f6;
  --accent-blue-hover: #2563eb;
  
  --accent-green: #10b981;
  --accent-green-bg: rgba(16, 185, 129, 0.1);
  
  --accent-red: #ef4444;
  --accent-red-bg: rgba(239, 68, 68, 0.1);
  
  --accent-orange: #f59e0b;
  --accent-orange-bg: rgba(245, 158, 11, 0.1);

  /* Borders & Shadows */
  --border-color: rgba(255, 255, 255, 0.05);
  --glass-bg: rgba(17, 24, 39, 0.7);
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 15px rgba(59, 130, 246, 0.3);
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

* {
  box-sizing: border-box;
}

/* Glassmorphism Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

/* Typography */
h1 {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 2rem;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

/* Buttons */
.nav-btn {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-right: 12px;
  margin-bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.nav-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-blue);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
  transform: translateY(-1px);
}

.nav-btn.active {
  background: var(--accent-blue);
  border-color: var(--accent-blue-hover);
  color: white;
}

.action-btn {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Modern Tables */
.data-table-container {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  text-align: left;
}

.data-table th {
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.data-table td {
  padding: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
  font-size: 0.95rem;
  vertical-align: middle;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Status Badges */
.badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  display: inline-block;
}

.badge-success { background: var(--accent-green-bg); color: var(--accent-green); border: 1px solid rgba(16, 185, 129, 0.2); }
.badge-danger { background: var(--accent-red-bg); color: var(--accent-red); border: 1px solid rgba(239, 68, 68, 0.2); }
.badge-warning { background: var(--accent-orange-bg); color: var(--accent-orange); border: 1px solid rgba(245, 158, 11, 0.2); }
.badge-neutral { background: var(--bg-tertiary); color: var(--text-secondary); border: 1px solid var(--border-color); }

/* Layouts */
.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px 20px;
}

.nav-container {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.4s ease-out forwards;
}

/* Utilities */
.text-green { color: var(--accent-green); }
.text-red { color: var(--accent-red); }
.text-orange { color: var(--accent-orange); }
.text-blue { color: var(--accent-blue); }
.text-muted { color: var(--text-muted); }