/* ========== RESET DEFAULTS ========== */
   header {
width: 100%;
}
    .container {
      max-width: 1200px;
      margin: 0 auto;
    }
    h1 {
      margin-bottom: 10px;
      font-size: 1.8rem;
    }
    p {
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .description {
      margin-bottom: 20px;
      color: #666;
      font-size: 0.95rem;
    }

    /* ========== FORM WRAPPER ========== */
    .calc-form {
      max-width: 1000px;
      margin: 0 auto;
      background-color: #f4f4f4;
      border: 1px solid #ccc;
      padding: 10px;
    }
    .calc-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      background-color: #fff;
      border: 1px solid #ccc;
    }

    /* ========== PANELS ========== */
    .panel {
      flex: 1 1 300px;
      min-width: 280px;
      border-right: 1px solid #ccc;
    }
    .panel:last-child {
      border-right: none;
    }
    .panel-heading {
      background-color: #4A7E9E;
      color: #fff;
      padding: 8px;
      font-weight: bold;
      font-size: 1rem;
    }
    .panel-body {
      padding: 10px;
margin: 10px;
    }

    /* FORM GROUPS */
    .form-group {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
    }
    .form-group label {
      flex: 0 0 140px;
      font-weight: bold;
    }
    .form-group select,
    .form-group input[type="number"] {
      flex: 1;
      padding: 6px;
      font-size: 0.95rem;
      border: 1px solid #ccc;
      border-radius: 4px;

    }
    .suffix {
      margin-left: 4px;
      font-size: 0.9rem;
      color: #555;
    }

    /* BUTTON ROW */
    .button-row {
      display: flex;
      align-items: center;
      justify-content: center;
      margin-top: 10px;
    }
    button {
      cursor: pointer;
      border: none;
      border-radius: 4px;
      font-size: 1rem;
      padding: 8px 16px;
      margin: 0 5px;
    }
    .btn-calculate {
      background-color: #3d7a40;
      color: #fff;
    }
    .btn-calculate .arrow-circle {
      display: inline-block;
      margin-left: 8px;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background-color: #2f5c2f;
      color: #fff;
      font-size: 0.8rem;
      line-height: 18px;
      text-align: center;
      vertical-align: middle;
    }
    .btn-clear {
      background-color: #ccc;
      color: #000;
    }

    /* ========== RESULTS SECTION ========== */
    .results-section {
      max-width: 1000px;
      margin: 20px auto 0 auto;
      border: 1px solid #ccc;
      background-color: #f9f9f9;
      display: flex;
      flex-direction: column;
      padding: 0;
    }
    .results-header {
      background-color: #69963c;
      color: #fff;
      padding: 6px 10px;
      position: relative;
      display: flex;
      align-items: center;
    }
    .results-header h2 {
      margin: 0;
      font-size: 1.2rem;
      font-weight: normal;
    }
    .save-icon {
      position: absolute;
      right: 10px;
      width: 18px;
      height: 18px;
      top: 6px;
    }
    .results-content {
      padding: 10px;
    }
    .results-content p {
      margin-bottom: 6px;
      line-height: 1.4;
    }
    .highlight {
      font-weight: bold;
    }

    /* TABLE */
    .table-container {
      overflow-x: auto;
      margin-top: 10px;
    }
    table {
      border-collapse: collapse;
      width: 100%;
      min-width: 600px;
    }
    th, td {
      border: 1px solid #ccc;
      padding: 8px;
      vertical-align: middle;
    }
    thead th {
      background-color: #eee;
      text-align: left;
    }
    tbody tr:nth-child(even) td {
      background-color: #f2f2f2;
    }
    .text-right {
      text-align: right;
    }

    /* ========== RESPONSIVE ========== */
    @media (max-width: 768px) {
      .calc-wrapper {
        flex-direction: column;
      }
.container {
width: 90%;
}
      .panel {
        border-right: none;
        border-bottom: 1px solid #ccc;
width: 90%;
      }
     .panel-heading {
width: 83%;
      }
      .panel:last-child {
        border-bottom: none;
      }
      .form-group {
        flex-direction: column;
        align-items: flex-start;
      }
      .form-group label {
        flex: 0 0 auto;
        width: 100%;
        margin-bottom: 4px;
      }
      .form-group select,
      .form-group input[type="number"] {
        flex: 1 1 auto;
width: 90%;
      }
    }