@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

:root {
  /* Colors from design: Deep navy dark theme */
  --bg-primary: #070c17;
  --bg-secondary: #0c1527;
  --bg-sidebar: #040810;
  
  --accent-blue: #00d2ff;
  --accent-blue-glow: rgba(0, 210, 255, 0.15);
  --border-color: #16223f;
  
  --text-primary: #ffffff;
  --text-secondary: #7f91a8;
  --text-muted: #4e5b6e;
  
  --status-running: #00e676;
  --status-stopped: #ff3d00;
  
  --sidebar-width: 260px;
  --header-height: 80px;
}

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

body {
  font-family: 'Inter', 'Noto Sans JP', 'Hiragino Kaku Gothic Pro', 'Meiryo', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

.placeholder-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  height: 60vh;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
  max-width: 800px;
  margin: 40px auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.placeholder-icon {
  width: 60px;
  height: 60px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  opacity: 0.6;
}

.placeholder-icon.color-alert {
  color: var(--status-stopped);
  opacity: 0.8;
}

.placeholder-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.placeholder-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 450px;
  line-height: 1.5;
}

/* Overview Layout Shell */