body {
    background: #f8f9fb;
    font-family: "Inter Tight", sans-serif;
    color: #222;
    padding: 20px;
  }
  
  .wrap {
    max-width: 900px;
    margin: 0 auto;
  }
  
  .card {
    background: #fff;
    padding: 16px;
    margin-bottom: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  }
  
  h1, h2 { color: #258aff; }
  
  textarea, input, select {
    width: 100%;
    padding: 6px 8px;
    margin-top: 4px;
    border: 1px solid #ccc;
    border-radius: 6px;
  }
  
  button {
    background: #258aff;
    color: white;
    border: none;
    border-radius: 6px;
    padding: 8px 14px;
    cursor: pointer;
    margin-top: 10px;
  }
  
  button.ghost {
    background: #eee;
    color: #333;
    margin-left: 6px;
  }
  
  button:hover { opacity: 0.9; }
  
  table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
  }
  
  th, td {
    border: 1px solid #ddd;
    padding: 6px 8px;
    text-align: center;
  }
  
  th {
    background: #258aff;
    color: #fff;
  }
  .tip{
    display:inline-block;
    font-weight:700;
    border:1px solid #cdd3e1;
    border-radius:999px;
    width:18px;height:18px;line-height:16px;
    text-align:center;
    font-size:12px;
    cursor:help;
    color:#3b5ddd;
    background:#f4f6ff;
    vertical-align:middle;
    margin-left:6px;
  }
  .header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    border-bottom: 1px solid #e5e5e5;
    padding-bottom: 10px;
    margin-bottom: 25px;
  }
  
  .header .branding {
    text-align: right;
  }
  
  .header .powered {
    display: block;
    font-size: 12px;
    color: #888;
    margin-bottom: 2px;
    font-family: "Inter Tight", sans-serif;
  }
  
  .header .logo {
    height: 36px;
    width: auto;
    vertical-align: middle;
    filter: grayscale(0%);
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  
  .header .logo:hover {
    transform: scale(1.05);
    opacity: 0.9;
  }
  /* === Tooltip dla Widmo Lw(f) [dB(i)] === */
  .label-with-tooltip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
    color: #333;
  }
  
  .tooltip-icon {
    position: relative;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 18px;
    height: 18px;
    background-color: #258aff;
    color: #fff;
    font-size: 11px;
    font-weight: bold;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s ease;
  }
  
  .tooltip-icon:hover {
    background-color: #1672d4;
  }
  
  .tooltip-text {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 130%;
    left: 50%;
    transform: translateX(-50%);
    width: 260px;
    background-color: #1d1d1d;
    color: #fff;
    text-align: left;
    padding: 8px;
    border-radius: 6px;
    font-size: 12px;
    line-height: 1.4;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
    transition: opacity 0.2s ease;
    z-index: 10;
  }
  
  .tooltip-icon:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
  }