:root {
  /* System font tokens */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Color palette - Cold Tech/Trust theme */
  --bg-base: #0b1120;
  --bg-card: #111b30;
  --border-color: #1e293b;
  --border-glow: #2563eb;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  
  /* High contrast singular accents */
  --accent: #3b82f6;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  --accent-purple: #a855f7;
  
  /* Shared structural scales */
  --radius-card: 16px;
  --radius-btn: 999px;
  --radius-input: 8px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-primary);
  margin: 0;
  line-height: 1.5;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.85;
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* Nav component height locked to 72px max at desktop */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  padding: 0 24px;
  background: rgba(17, 27, 48, 0.85);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-weight: 800;
  font-size: 1.15em;
  color: #fff;
}

.nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.92em;
  font-weight: 500;
}

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

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 24px;
  margin-bottom: 24px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.metric {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow, var(--accent));
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  border: 0;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s, filter 0.2s;
  font-size: 0.95em;
}

.btn:active {
  transform: scale(0.98);
}

.btn2 {
  background: var(--border-color);
  border: 1px solid var(--border-color);
}

.btn2:hover {
  background: #273549;
}

.bad { color: var(--accent-danger); }
.mid { color: var(--accent-warning); }
.good { color: var(--accent-success); }

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}

th {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.85em;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-color);
  padding: 12px 8px;
  text-align: left;
}

td {
  border-bottom: 1px solid var(--border-color);
  padding: 12px 8px;
  font-size: 0.95em;
}

input, textarea, select {
  width: 100%;
  padding: 12px;
  border-radius: var(--radius-input);
  border: 1px solid var(--border-color);
  background: var(--bg-base);
  color: #fff;
  box-sizing: border-box;
  font-family: inherit;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.pill {
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--border-color);
  color: var(--text-secondary);
  font-size: 0.8em;
  display: inline-block;
  font-weight: 500;
}

small {
  color: var(--text-secondary);
  font-size: 0.85em;
}

/* Responsive grid layouts */
.grid-asym {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
}

@media (max-width: 768px) {
  .grid-asym {
    grid-template-columns: 1fr;
  }
  .nav {
    flex-direction: column;
    height: auto;
    padding: 16px;
    gap: 12px;
  }
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
  }
}