* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f5f5f5; color: #333; }
nav { background: #2c3e50; padding: 1rem 2rem; display: flex; gap: 2rem; }
nav a { color: #ecf0f1; text-decoration: none; font-weight: 500; }
nav a:hover { color: #3498db; }
main { max-width: 1200px; margin: 2rem auto; padding: 0 1rem; }
h1 { margin-bottom: 1.5rem; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 1rem; }
.stat { background: white; padding: 1.5rem; border-radius: 8px; text-align: center; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.stat .num { display: block; font-size: 2rem; font-weight: 700; color: #2c3e50; }
.stat .label { display: block; font-size: 0.85rem; color: #7f8c8d; margin-top: 0.5rem; }
table { width: 100%; border-collapse: collapse; background: white; border-radius: 8px; overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
th { background: #2c3e50; color: white; padding: 0.75rem 1rem; text-align: left; }
td { padding: 0.75rem 1rem; border-bottom: 1px solid #eee; }
tr:hover { background: #f8f9fa; }
button, .btn-approve, .btn-reject { padding: 0.4rem 0.8rem; border: none; border-radius: 4px; cursor: pointer; font-size: 0.85rem; }
.btn-approve { background: #27ae60; color: white; }
.btn-reject { background: #e74c3c; color: white; }
input[type="text"], input[type="password"] { padding: 0.4rem; border: 1px solid #ddd; border-radius: 4px; }