/* r131: компактная шапка и сохранение позиции при сворачивании карточки. */
:root {
  --requirement-summary-sticky-top: 176px;
}

@media screen {
  .requirement-card.expanded {
    overflow: visible;
  }

  .requirement-card.expanded > .requirement-summary {
    position: sticky;
    top: var(--requirement-summary-sticky-top);
    z-index: 32;
    border-radius: 11px 11px 0 0;
    border-bottom: 1px solid #d4dee3;
    background: rgba(255, 255, 255, 0.985);
    box-shadow: 0 8px 20px rgba(11, 45, 70, 0.14);
    -webkit-backdrop-filter: blur(9px);
    backdrop-filter: blur(9px);
    transition: min-height 0.16s ease, padding 0.16s ease, box-shadow 0.16s ease;
  }

  .requirement-card.expanded > .requirement-summary.is-compact-sticky {
    grid-template-columns: 112px minmax(0, 1fr) 128px 20px !important;
    gap: 10px !important;
    min-height: 48px !important;
    padding: 6px 11px !important;
    border-radius: 9px !important;
    border: 1px solid #c8d5db;
    border-left: 0;
    box-shadow: 0 5px 14px rgba(11, 45, 70, 0.18);
  }

  .requirement-summary.is-compact-sticky .requirement-code {
    box-sizing: border-box;
    width: 100%;
    min-width: 0;
    height: 30px;
    padding: 0 8px;
    overflow: hidden;
    font-size: 10px;
    line-height: 30px;
    text-align: center;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .requirement-summary.is-compact-sticky .requirement-main {
    display: block;
    min-width: 0;
  }

  .requirement-summary.is-compact-sticky .requirement-main b {
    display: block;
    overflow: hidden;
    font-size: 12px !important;
    line-height: 1.3 !important;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .requirement-summary.is-compact-sticky .requirement-main small,
  .requirement-summary.is-compact-sticky .requirement-summary-meta,
  .requirement-summary.is-compact-sticky .risk-label {
    display: none !important;
  }

  .requirement-summary.is-compact-sticky .status-pill {
    grid-column: auto !important;
    justify-self: end !important;
    box-sizing: border-box;
    width: 100%;
    min-width: 0;
    max-width: 128px;
    margin: 0 !important;
    padding: 5px 8px;
    overflow: hidden;
    font-size: 9px !important;
    line-height: 1.2;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .requirement-summary.is-compact-sticky .chevron {
    grid-column: auto !important;
    justify-self: center;
  }

  .requirement-card.expanded > .requirement-summary:hover,
  .requirement-card.expanded > .requirement-summary:focus-visible {
    background: #fff;
  }

  .requirement-card.expanded > .requirement-details {
    border-radius: 0 0 11px 11px;
  }

  .requirement-wrap {
    scroll-margin-top: calc(var(--requirement-summary-sticky-top) + 12px);
  }

  .requirement-collapse-spacer {
    width: 1px;
    min-height: 0;
    margin: 0;
    padding: 0;
    pointer-events: none;
  }
}

@media screen and (max-width: 760px) {
  .requirement-card.expanded > .requirement-summary {
    box-shadow: 0 6px 16px rgba(11, 45, 70, 0.16);
  }

  .requirement-card.expanded > .requirement-summary.is-compact-sticky {
    grid-template-columns: 102px minmax(0, 1fr) 118px 18px !important;
    gap: 7px !important;
    min-height: 46px !important;
    padding: 5px 9px !important;
  }

  .requirement-summary.is-compact-sticky .requirement-code {
    width: 100%;
    height: 28px;
    padding: 0 6px;
    line-height: 28px;
  }

  .requirement-summary.is-compact-sticky .status-pill {
    max-width: 118px;
  }
}

@media screen and (max-width: 520px) {
  .requirement-card.expanded > .requirement-summary.is-compact-sticky {
    grid-template-columns: 88px minmax(0, 1fr) 102px 16px !important;
    gap: 6px !important;
  }

  .requirement-summary.is-compact-sticky .status-pill {
    max-width: 102px;
    padding-right: 5px;
    padding-left: 5px;
  }
}

@media print {
  .requirement-card.expanded > .requirement-summary {
    position: static !important;
    box-shadow: none !important;
  }

  .requirement-collapse-spacer {
    display: none !important;
    height: 0 !important;
  }
}