/* Modern SaaS Dashboard Design System */
:root {
  --accent: #6366f1;
  --accent-hover: #4338ca;
  --bg: #f8fafc;
  --surface: #fff;
  --surface-glass: rgba(255,255,255,0.7);
  --text: #18181b;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --radius: 18px;
  --shadow: 0 8px 32px rgba(60,60,120,0.12);
  --transition: 0.18s cubic-bezier(.4,0,.2,1);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #18181b;
    --surface: #23272f;
    --surface-glass: rgba(36,37,46,0.7);
    --text: #f3f4f6;
    --text-muted: #a1a1aa;
    --border: #353945;
    --accent: #818cf8;
    --accent-hover: #6366f1;
  }
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  margin: 0;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}
.glass {
  background: var(--surface-glass);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  backdrop-filter: blur(18px) saturate(1.2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1.5px solid var(--border);
}
.button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 10px 22px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background var(--transition);
}
.button:hover {
  background: var(--accent-hover);
}
input, select {
  border-radius: 8px;
  border: 1.5px solid var(--border);
  padding: 8px 12px;
  font-size: 1rem;
  background: var(--surface);
  color: var(--text);
  margin-bottom: 8px;
  transition: border var(--transition), background var(--transition);
}
input:focus, select:focus {
  border-color: var(--accent);
  outline: none;
}
nav {
  display: flex;
  gap: 18px;
  align-items: center;
  padding: 18px 32px;
  background: var(--surface-glass);
  border-bottom: 1.5px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition);
}
nav a.active, nav a:hover {
  background: var(--accent);
  color: #fff;
}
.main-content {
  max-width: 1200px;
  margin: 40px auto 0 auto;
  padding: 0 18px 40px 18px;
}
.card {
  background: var(--surface-glass);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1.5px solid var(--border);
  padding: 32px 28px;
  margin-bottom: 32px;
  transition: box-shadow var(--transition), border var(--transition);
}
.card:hover {
  box-shadow: 0 12px 48px rgba(60,60,120,0.18);
  border-color: var(--accent);
}
.heading {
  font-size: 2.1rem;
  font-weight: 800;
  margin-bottom: 18px;
  color: var(--accent);
}
.text-muted {
  color: var(--text-muted);
}