body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background: #f4f6f9; color: #333; margin: 0; padding: 0; }
.container { max-width: 900px; margin: 30px auto; padding: 0 20px; }
.card { background: #fff; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); padding: 20px; margin-bottom: 20px; }
.header { background: #fff; padding: 15px 20px; box-shadow: 0 2px 5px rgba(0,0,0,0.05); display: flex; justify-content: space-between; align-items: center; }
.nav a { margin-right: 15px; text-decoration: none; color: #555; font-weight: 500; }
.nav a:hover { color: #007bff; }
.btn { display: inline-block; padding: 10px 20px; background: #007bff; color: #fff; border: none; border-radius: 5px; cursor: pointer; text-decoration: none; font-size: 14px; }
.btn-danger { background: #dc3545; }
.btn-success { background: #28a745; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
input, select { width: 100%; padding: 10px; margin: 5px 0 15px; border: 1px solid #ddd; border-radius: 4px; box-sizing: border-box; }
label { font-weight: bold; font-size: 13px; color: #666; }
.status-ok { color: green; font-weight: bold; }
.status-err { color: red; font-weight: bold; }
table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th, td { padding: 10px; text-align: left; border-bottom: 1px solid #eee; font-size: 14px; }
.balance-box { font-size: 24px; font-weight: bold; color: #28a745; }