* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: #f0f2f5; color: #1a1a1a; }
header { background: #1a1a2e; color: #fff; padding: 16px 24px; display: flex; justify-content: space-between; align-items: center; }
header h1 { font-size: 20px; }
#auth-info { font-size: 14px; opacity: 0.8; }
#nav { background: #16213e; padding: 8px 24px; display: flex; gap: 4px; overflow-x: auto; }
#nav button { background: transparent; color: #aaa; border: none; padding: 8px 16px; cursor: pointer; border-radius: 6px; font-size: 14px; white-space: nowrap; }
#nav button:hover, #nav button.active { background: #0f3460; color: #fff; }
main { padding: 24px; max-width: 1200px; margin: 0 auto; }
.card { background: #fff; border-radius: 8px; padding: 16px; margin-bottom: 16px; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid #eee; font-size: 14px; }
th { background: #f8f9fa; font-weight: 600; }
tr:hover { background: #f5f5f5; }
.stat { display: inline-block; min-width: 120px; margin-right: 16px; }
.stat-value { font-size: 28px; font-weight: 700; color: #2481cc; }
.stat-label { font-size: 12px; color: #666; text-transform: uppercase; }
.badge { padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 600; }
.badge-success { background: #e8f5e9; color: #2e7d32; }
.badge-warning { background: #fff3e0; color: #f57c00; }
.badge-danger { background: #ffebee; color: #c62828; }
.btn { background: #2481cc; color: #fff; border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; font-size: 14px; }
.btn:hover { opacity: 0.9; }
.btn-danger { background: #c62828; }
.login { max-width: 400px; margin: 100px auto; text-align: center; }
.login input { width: 100%; padding: 12px; margin: 8px 0; border: 1px solid #ddd; border-radius: 6px; font-size: 16px; }
.login button { width: 100%; padding: 12px; background: #2481cc; color: #fff; border: none; border-radius: 6px; font-size: 16px; cursor: pointer; }