@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #161b26;
  --bg-tertiary: #1f2638;
  --accent-primary: #6366f1;
  --accent-secondary: #a855f7;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --border-color: #2d3748;
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-neon: 0 0 15px rgba(99, 102, 241, 0.3);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
}

/* Header & Navigation */
header {
  background-color: rgba(22, 27, 38, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo i {
  -webkit-text-fill-color: var(--accent-primary);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

/* Page Layout */
.container {
  max-width: 1400px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

/* Utilities / UI Elements */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: var(--shadow-neon);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

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

.btn-danger:hover {
  opacity: 0.9;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-info {
  background-color: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.badge-success {
  background-color: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.badge-warning {
  background-color: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
}

.badge-secondary {
  background-color: rgba(156, 163, 175, 0.15);
  color: #d1d5db;
}

/* Card */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin-bottom: 2rem;
  overflow: hidden;
}

.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-body {
  padding: 1.5rem;
}

/* Filter Section */
.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  align-items: end;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-control:focus {
  border-color: var(--accent-primary);
}

/* Table */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
}

tr:hover td {
  background-color: var(--bg-tertiary);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
}

.page-info {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.page-controls {
  display: flex;
  gap: 0.5rem;
}

/* Code Editor / Visualizer */
.code-container {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  background-color: #05070c;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1rem;
  overflow: auto;
  max-height: 500px;
  font-size: 0.85rem;
  white-space: pre-wrap;
  color: #34d399;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(5, 7, 12, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* Diff Viewer Styling */
.diff-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background-color: var(--border-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.diff-pane {
  background-color: #05070c;
  padding: 1rem;
  overflow: auto;
  max-height: 500px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  white-space: pre;
}

.diff-title {
  background-color: var(--bg-tertiary);
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.diff-line {
  display: block;
}

.diff-line.removed {
  background-color: rgba(239, 68, 68, 0.2);
  color: #f87171;
}

.diff-line.added {
  background-color: rgba(16, 185, 129, 0.2);
  color: #34d399;
}