/* styles.css */
:root {
    --primary:#3b82f6; --bg-sidebar: #1a365d;
  }
  .sidebar {
    background: var(--bg-sidebar);
    min-height:100vh; color:#ecf0f1;
  }
  .nav-link { color:#ecf0f1; margin:5px 0; border-radius:6px; }
  .nav-link.active { background: var(--primary); }
  .stat-card { border:none; border-radius:12px; box-shadow:0 4px 12px rgba(0,0,0,0.08); }
  .auth-card { max-width:400px; margin:80px auto; }