:root {
  --bg-dark: #0a0e14;
  --panel-bg: #131922;
  --border-color: #212d3d;
  --text-main: #c0caf5;
  --text-dim: #565f89;
  --accent-blue: #7dcfff;
  --neon-green: #00ff66;
  --neon-orange: #ff9e64;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Courier New', Courier, monospace;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
}

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

.sidebar {
  width: 280px;
  background-color: var(--panel-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 20px;
}

.logo {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--neon-green);
  margin-bottom: 30px;
}

.menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.menu-item {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 12px;
  border-radius: 4px;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.2s ease;
}

.menu-item:hover, .menu-item.active {
  background-color: #1a2332;
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.system-status {
  font-size: 0.8rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border-color);
  padding-top: 15px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--neon-orange);
  margin-right: 5px;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  padding: 20px 30px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.user-badge {
  border: 1px solid var(--accent-blue);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.85rem;
  color: var(--accent-blue);
}

.view-container {
  padding: 30px;
  overflow-y: auto;
  flex: 1;
}

.card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 20px;
  margin-bottom: 15px;
}