:root {
  --bg-darker: #0d1117;
  --bg-dark: #161b22;
  --bg-panel: #21262d;
  --bg-hover: #30363d;
  --border-color: #30363d;
  --border-accent: #388bfd;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent-cyan: #58a6ff;
  --accent-green: #3fb950;
  --accent-red: #f85149;
  --accent-yellow: #d29922;
  --accent-purple: #bc8cff;
  --font-mono: 'Fira Code', 'Courier New', monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

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

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

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-dark);
  border-bottom: 1px solid var(--border-color);
  padding: 10px 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  font-size: 26px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1px;
}

.logo-subtitle {
  font-size: 11px;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--accent-green);
  background: rgba(63, 185, 80, 0.1);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid rgba(63, 185, 80, 0.3);
}

.status-indicator .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 0.4; }
  50% { opacity: 1; }
  100% { opacity: 0.4; }
}

.nav-btn {
  background: var(--bg-panel);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
}

.nav-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent-cyan);
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  background-color: var(--bg-dark);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 20px;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.toolbar-group select,
.toolbar-group input[type="text"],
.toolbar-group input[type="password"] {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 13px;
  outline: none;
}

.toolbar-group select:focus,
.toolbar-group input[type="text"]:focus,
.toolbar-group input[type="password"]:focus {
  border-color: var(--accent-cyan);
}

.checkbox-group label {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.action-group {
  margin-left: auto;
}

/* Buttons */
.primary-btn {
  background: linear-gradient(135deg, #1f6feb, #238636);
  color: #fff;
  border: none;
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

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

.secondary-btn {
  background: var(--bg-panel);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

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

.btn-sm {
  padding: 4px 8px;
  font-size: 11px;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}

.icon-btn:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

/* Workspace Panels */
.workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.panel {
  display: flex;
  flex-direction: column;
  flex: 1;
  background-color: var(--bg-dark);
  border-right: 1px solid var(--border-color);
  overflow: hidden;
}

.panel:last-child {
  border-right: none;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 14px;
  min-height: 42px;
}

.panel-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.badge {
  background: rgba(139, 148, 158, 0.2);
  color: var(--text-secondary);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
}

/* Editor */
.editor-container {
  flex: 1;
  position: relative;
}

#code-input {
  width: 100%;
  height: 100%;
  background: var(--bg-darker);
  color: #c9d1d9;
  border: none;
  outline: none;
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  resize: none;
}

/* Tabs */
.tab-header {
  padding: 0 10px;
}

.tab-group {
  display: flex;
  gap: 2px;
}

.tab-btn {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-bottom: 2px solid transparent;
  padding: 10px 12px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
  font-weight: 600;
}

.tab-content-container {
  flex: 1;
  overflow: auto;
  padding: 14px;
  background: var(--bg-darker);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Code Display */
.code-display {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: #e6edf3;
  white-space: pre-wrap;
  word-break: break-word;
}

.diff-view {
  color: var(--text-primary);
}

.diff-add {
  color: var(--accent-green);
  background: rgba(63, 185, 80, 0.15);
  display: block;
}

.diff-del {
  color: var(--accent-red);
  background: rgba(248, 81, 73, 0.15);
  display: block;
}

/* Summary Banner */
.summary-banner {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 14px;
}

.summary-top {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.metric-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(88, 166, 255, 0.3);
}

.summary-desc {
  font-size: 13px;
  color: var(--text-primary);
}

/* Data Tables */
.table-container {
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th,
.data-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background: var(--bg-panel);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
}

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

.empty-cell {
  text-align: center;
  color: var(--text-muted);
  padding: 30px !important;
}

/* Cards List */
.cards-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.block-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--accent-cyan);
  border-radius: 6px;
  padding: 12px;
}

.block-card-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
}

.block-title {
  font-weight: 600;
  font-size: 13px;
  color: var(--accent-cyan);
}

.block-range {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.block-desc {
  font-size: 13px;
  color: var(--text-primary);
}

/* Security Grid */
.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.sec-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
}

.sec-card h3 {
  font-size: 13px;
  margin-bottom: 12px;
  color: var(--text-secondary);
}

.threat-card {
  border-color: rgba(248, 81, 73, 0.4);
}

.threat-card h3 {
  color: var(--accent-red);
}

.badge-list, .threat-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.badge-list li {
  background: rgba(88, 166, 255, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(88, 166, 255, 0.2);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
}

.threat-list li {
  background: rgba(248, 81, 73, 0.1);
  color: var(--accent-red);
  border: 1px solid rgba(248, 81, 73, 0.2);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
}

.empty-item {
  color: var(--text-muted) !important;
  background: transparent !important;
  border: none !important;
}

/* Spinner */
.spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  width: 800px;
  max-width: 90%;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-size: 16px;
}

.modal-body {
  padding: 20px;
  overflow: auto;
}