.marble-document-collections-public {
  margin: 40px 0 0;
}

.marble-document-collections-public__shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.marble-document-collection-public {
  padding: 32px;
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 24px;
  background: #fff;
}

.marble-document-collection-public + .marble-document-collection-public {
  margin-top: 24px;
}

.marble-document-collection-public__header {
  max-width: 760px;
  margin-bottom: 28px;
}

.marble-document-collection-public__eyebrow {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
}

.marble-document-collection-public__title {
  margin: 0;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.1;
  color: #0f172a;
}

.marble-document-collection-public__description {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.6;
  color: #475569;
}

.marble-document-collection-public__groups {
  display: grid;
  gap: 20px;
}

.marble-document-collection-group {
  padding: 24px;
  border-radius: 18px;
  background: #f8fafc;
}

.marble-document-collection-group__header {
  margin-bottom: 16px;
}

.marble-document-collection-group__title {
  margin: 0;
  font-size: 21px;
  line-height: 1.3;
  color: #0f172a;
}

.marble-document-collection-group__description {
  margin: 6px 0 0;
  line-height: 1.55;
  color: #64748b;
}

.marble-document-collection-group__items {
  display: grid;
  gap: 10px;
}

.marble-document-collection-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 20px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 14px;
  background: #fff;
  color: inherit;
  text-decoration: none;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.marble-document-collection-item:hover {
  transform: translateY(-1px);
  border-color: rgba(37, 99, 235, 0.28);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.07);
}

.marble-document-collection-item__body {
  display: grid;
  gap: 5px;
}

.marble-document-collection-item__title {
  font-size: 16px;
  line-height: 1.4;
  color: #0f172a;
}

.marble-document-collection-item__description {
  line-height: 1.5;
  color: #64748b;
}

.marble-document-collection-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  line-height: 1.4;
  color: #64748b;
}

.marble-document-collection-item__action {
  flex: 0 0 auto;
  font-size: 24px;
  line-height: 1;
  color: #2563eb;
}

@media (max-width: 700px) {
  .marble-document-collections-public__shell {
    width: min(100% - 24px, 1180px);
  }

  .marble-document-collection-public {
    padding: 22px 18px;
    border-radius: 18px;
  }

  .marble-document-collection-group {
    padding: 18px 14px;
  }

  .marble-document-collection-item {
    padding: 16px;
  }
}

/*
 * BR-050.3 public collection group accordion.
 *
 * Native details/summary semantics intentionally mirror the
 * collapsible material groups used elsewhere in Marble.
 */

.marble-document-collection-group {
  overflow: hidden;
}

.marble-document-collection-group__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px;
  cursor: pointer;
  list-style: none;
}

.marble-document-collection-group__summary::-webkit-details-marker {
  display: none;
}

.marble-document-collection-group__summary::marker {
  content: "";
}

.marble-document-collection-group__summary-copy {
  display: grid;
  min-width: 0;
  gap: 6px;
}

.marble-document-collection-group__title {
  font-size: 21px;
  font-weight: 700;
  line-height: 1.3;
  color: #0f172a;
}

.marble-document-collection-group__description {
  line-height: 1.55;
  color: #64748b;
}

.marble-document-collection-group__toggle {
  position: relative;
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 50%;
  background: #fff;
}

.marble-document-collection-group__toggle::before,
.marble-document-collection-group__toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 2px;
  border-radius: 999px;
  background: #2563eb;
  transform: translate(-50%, -50%);
}

.marble-document-collection-group__toggle::after {
  transform:
    translate(-50%, -50%)
    rotate(90deg);
  transition: transform 160ms ease;
}

.marble-document-collection-group[open]
  .marble-document-collection-group__toggle::after {
  transform:
    translate(-50%, -50%)
    rotate(0deg);
}

.marble-document-collection-group__body {
  padding: 0 24px 24px;
}

.marble-document-collection-group:not([open])
  .marble-document-collection-group__body {
  display: none;
}

.marble-document-collection-group__summary:hover
  .marble-document-collection-group__toggle {
  border-color: rgba(37, 99, 235, 0.34);
}

.marble-document-collection-group__summary:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.55);
  outline-offset: -2px;
}

@media (max-width: 700px) {
  .marble-document-collection-group__summary {
    padding: 18px 14px;
  }

  .marble-document-collection-group__body {
    padding: 0 14px 18px;
  }

  .marble-document-collection-group__toggle {
    flex-basis: 30px;
    width: 30px;
    height: 30px;
  }
}

/*
 * BR-050.4 document type badge.
 */

.marble-document-collection-item__type {
  display: inline-flex;
  flex: 0 0 48px;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 10px;
  background: #f8fbff;

  font-size: 10px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.04em;
  color: #2563eb;
}

.marble-document-collection-item__body {
  flex: 1 1 auto;
  min-width: 0;
}

@media (max-width: 700px) {
  .marble-document-collection-item__type {
    flex-basis: 42px;
    width: 42px;
    height: 42px;
    border-radius: 9px;
  }
}


/*
 * BR-050.5 PUBLIC VISUAL HIERARCHY
 *
 * Strengthen the three public levels:
 *
 * collection
 *   -> group
 *      -> document
 *
 * No structural or interaction changes.
 */


/* ---------------------------------------------------------
 * Collection surface.
 * --------------------------------------------------------- */

.marble-document-collection-public {
  position: relative;

  padding: 34px;

  border:
    1px solid rgba(27, 83, 132, 0.14);

  border-radius: 22px;

  background:
    linear-gradient(
      180deg,
      #ffffff 0%,
      #fbfdff 100%
    );

  box-shadow:
    0 12px 34px rgba(18, 55, 88, 0.055);
}


/*
 * Small Marble accent instead of another full-width
 * separator.
 */

.marble-document-collection-public::before {
  content: "";

  position: absolute;

  top: 0;
  left: 30px;

  width: 74px;
  height: 3px;

  border-radius: 0 0 4px 4px;

  background: #168fd2;
}


.marble-document-collection-public__header {
  margin-bottom: 26px;
}


.marble-document-collection-public__eyebrow {
  color: #147fbd;

  font-weight: 800;
  letter-spacing: 0.075em;
}


.marble-document-collection-public__title {
  color: #102d4c;
}


.marble-document-collection-public__description {
  color: #657b90;
}


/* ---------------------------------------------------------
 * Group surface.
 * --------------------------------------------------------- */

.marble-document-collection-public__groups {
  gap: 14px;
}


.marble-document-collection-group {
  border:
    1px solid rgba(29, 97, 149, 0.10);

  border-radius: 16px;

  background: #f3f7fb;

  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75);
}


.marble-document-collection-group__summary {
  min-height: 84px;

  padding: 20px 22px;

  transition:
    background 150ms ease;
}


.marble-document-collection-group__summary:hover {
  background: rgba(255, 255, 255, 0.44);
}


.marble-document-collection-group[open]
  > .marble-document-collection-group__summary {
  border-bottom:
    1px solid rgba(29, 97, 149, 0.08);
}


.marble-document-collection-group__summary-copy {
  gap: 5px;
}


.marble-document-collection-group__title {
  font-size: 18px;
  line-height: 1.28;

  color: #102d4c;
}


.marble-document-collection-group__description {
  color: #718397;
}


.marble-document-collection-group__body {
  padding:
    16px
    18px
    18px;
}


/* ---------------------------------------------------------
 * Toggle.
 * --------------------------------------------------------- */

.marble-document-collection-group__toggle {
  flex-basis: 30px;

  width: 30px;
  height: 30px;

  border:
    1px solid rgba(22, 143, 210, 0.24);

  background: rgba(255, 255, 255, 0.90);

  box-shadow:
    0 3px 9px rgba(20, 76, 116, 0.055);
}


.marble-document-collection-group__toggle::before,
.marble-document-collection-group__toggle::after {
  width: 10px;

  background: #168fd2;
}


/* ---------------------------------------------------------
 * Document surface.
 * --------------------------------------------------------- */

.marble-document-collection-group__items {
  gap: 9px;
}


.marble-document-collection-item {
  min-height: 66px;

  gap: 14px;

  padding: 10px 14px;

  border:
    1px solid rgba(27, 83, 132, 0.12);

  border-radius: 12px;

  background: #ffffff;

  box-shadow:
    0 4px 14px rgba(18, 55, 88, 0.045);

  transition:
    transform 150ms ease,
    border-color 150ms ease,
    box-shadow 150ms ease,
    background 150ms ease;
}


.marble-document-collection-item:hover {
  transform: translateY(-1px);

  border-color:
    rgba(22, 143, 210, 0.28);

  background: #ffffff;

  box-shadow:
    0 8px 22px rgba(18, 55, 88, 0.075);
}


/* ---------------------------------------------------------
 * File badge.
 * --------------------------------------------------------- */

.marble-document-collection-item__type {
  flex-basis: 40px;

  width: 40px;
  height: 40px;

  border:
    1px solid rgba(22, 143, 210, 0.22);

  border-radius: 9px;

  background:
    linear-gradient(
      180deg,
      #f8fcff,
      #eef7fd
    );

  color: #087fc5;

  font-size: 9px;
  font-weight: 900;

  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.8);
}


/* ---------------------------------------------------------
 * Document typography.
 * --------------------------------------------------------- */

.marble-document-collection-item__body {
  gap: 4px;
}


.marble-document-collection-item__title {
  font-size: 14px;
  line-height: 1.35;

  color: #102d4c;
}


.marble-document-collection-item__meta {
  gap: 6px;

  font-size: 10px;
  line-height: 1.35;

  color: #718397;
}


/*
 * The extension is already visually represented
 * by the badge. Keep the metadata compact.
 */

.marble-document-collection-item__meta {
  opacity: 0.92;
}


/* ---------------------------------------------------------
 * Right action.
 * --------------------------------------------------------- */

.marble-document-collection-item__action {
  display: inline-flex;

  flex: 0 0 28px;

  align-items: center;
  justify-content: center;

  width: 28px;
  height: 28px;

  border-radius: 50%;

  color: #168fd2;

  font-size: 18px;

  transition:
    background 150ms ease,
    transform 150ms ease;
}


.marble-document-collection-item:hover
  .marble-document-collection-item__action {
  background: #eef7fd;

  transform: translateX(2px);
}


/* ---------------------------------------------------------
 * Responsive.
 * --------------------------------------------------------- */

@media (max-width: 700px) {

  .marble-document-collection-public {
    padding: 24px 18px;
  }


  .marble-document-collection-public::before {
    left: 18px;
  }


  .marble-document-collection-group__summary {
    min-height: 72px;

    padding: 17px 15px;
  }


  .marble-document-collection-group__body {
    padding: 12px;
  }


  .marble-document-collection-item {
    gap: 11px;

    padding: 10px 11px;
  }


  .marble-document-collection-item__type {
    flex-basis: 38px;

    width: 38px;
    height: 38px;
  }
}


/*
 * BR-050.5.1 GROUP COMPACT
 *
 * Reduce the visual mass of collapsed document groups.
 */

.marble-document-collection-group {
  border-radius: 14px;
}


.marble-document-collection-group__summary {
  min-height: 0;

  padding:
    15px
    18px;
}


.marble-document-collection-group__summary-copy {
  gap: 3px;
}


.marble-document-collection-group__title {
  font-size: 17px;
}


.marble-document-collection-group__description {
  font-size: 13px;
  line-height: 1.4;
}


.marble-document-collection-group__toggle {
  flex-basis: 28px;

  width: 28px;
  height: 28px;
}


.marble-document-collection-group__body {
  padding:
    12px
    14px
    14px;
}


.marble-document-collection-public__groups {
  gap: 10px;
}


@media (max-width: 700px) {

  .marble-document-collection-group__summary {
    padding:
      13px
      14px;
  }


  .marble-document-collection-group__title {
    font-size: 16px;
  }


  .marble-document-collection-group__body {
    padding:
      10px
      11px
      12px;
  }
}


/*
 * BR-050.5.2 GROUP PADDING OWNER FIX
 *
 * F12 geometry proved the remaining visual height belongs to
 * the DETAILS element itself:
 *
 *   GROUP   ~= 129px
 *   SUMMARY ~= 79px
 *
 * with approximately 25px above and below the summary.
 *
 * The summary/body now own all internal spacing.
 */

.marble-document-collection-group {
  padding: 0;
}


/*
 * Closed group: compact single header surface.
 */
.marble-document-collection-group:not([open]) {
  padding: 0;
}


/*
 * Open group remains structurally identical.
 * Its body supplies the document-area spacing.
 */
.marble-document-collection-group[open] {
  padding: 0;
}

/* BR-043: public Hero for the official RFrit documents collection. */
.marble-documents-hero {
  position: relative;
  isolation: isolate;
  margin: 0 0 clamp(2rem, 4vw, 3.5rem);
  padding: clamp(2.75rem, 5vw, 4.5rem) 0;
  overflow: hidden;
  border: 1px solid rgba(68, 174, 231, 0.14);
  border-radius: 22px;

  background:
    radial-gradient(
      circle at 91% 22%,
      rgba(24, 126, 183, 0.18),
      transparent 32%
    ),
    linear-gradient(
      118deg,
      #062f51 0%,
      #073d64 55%,
      #0b527d 100%
    );

  box-shadow:
    0 18px 46px
    rgba(1, 39, 65, 0.10);

  color: #fff;
}

/*
 * Marble/RFrit decorative geometry.
 * Pure presentation: no additional markup required.
 */
.marble-documents-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  right: -90px;
  bottom: -230px;
  width: 500px;
  height: 500px;
  border:
    1px solid
    rgba(81, 190, 238, 0.18);
  border-radius: 50%;
  pointer-events: none;
}

.marble-documents-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: 74px;
  top: 31%;
  width: 330px;
  height: 1px;

  background:
    linear-gradient(
      90deg,
      transparent,
      rgba(79, 190, 240, 0.26),
      transparent
    );

  transform: rotate(-9deg);
  transform-origin: right center;
  pointer-events: none;
}

.marble-documents-hero__inner {
  position: relative;
  z-index: 1;
  width: min(100% - 64px, 1120px);
  margin-inline: auto;
}

.marble-documents-hero__eyebrow {
  margin: 0 0 1rem;

  color: #4bc8f5;

  font-size: 0.8125rem;
  font-weight: 750;
  line-height: 1;
  letter-spacing: 0.11em;
  text-transform: uppercase;

  opacity: 1;
}

.marble-documents-hero__title {
  max-width: 760px;
  margin: 0;

  color: #fff;

  font-size:
    clamp(
      2.75rem,
      4.5vw,
      4.5rem
    );

  font-weight: 750;
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.marble-documents-hero__lead {
  max-width: 720px;
  margin: 1.15rem 0 0;

  color:
    rgba(
      255,
      255,
      255,
      0.88
    );

  font-size:
    clamp(
      1rem,
      1.35vw,
      1.15rem
    );

  line-height: 1.55;
}

/*
 * rfrit_documents receives its page identity from the Hero above.
 * Other Marble Document Collections retain their normal collection header.
 */
.marble-document-collection-public__header--hidden {
  display: none;
}

@media (max-width: 640px) {
  .marble-documents-hero {
    margin-bottom: 2rem;
    padding: 2.5rem 0 2.7rem;
    border-radius: 18px;
  }

  .marble-documents-hero__inner {
    width: min(100% - 36px, 1120px);
  }

  .marble-documents-hero__title {
    font-size: clamp(2.4rem, 12vw, 3.25rem);
  }

  .marble-documents-hero::before {
    right: -235px;
    bottom: -260px;
  }

  .marble-documents-hero::after {
    display: none;
  }
}

/*
 * BR-043.5D3.4
 * Documents Hero brand eyebrow.
 * Scoped override protects the RFrit cyan accent from generic
 * [class$="__eyebrow"] theme rules.
 */
.marble-documents-hero .marble-documents-hero__eyebrow {
  color: #4bc8f5;
  opacity: 1;
}


/* ==========================================================
 * MARBLE_DOCUMENTS_MOBILE_FILENAME_OVERFLOW_FIX_V1
 *
 * Mobile-only containment for long document titles and
 * physical filenames.
 *
 * Desktop/tablet presentation above 760px is unchanged.
 * ========================================================== */

@media (max-width: 760px) {

  .marble-document-collections-public,
  .marble-document-collections-public__shell,
  .marble-document-collection-public,
  .marble-document-collection-public__groups,
  .marble-document-collection-group,
  .marble-document-collection-group__body,
  .marble-document-collection-group__items,
  .marble-document-collection-item,
  .marble-document-collection-item__body {
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
  }

  .marble-document-collection-item {
    width: 100%;
  }

  .marble-document-collection-item__body {
    overflow: hidden;
  }

  .marble-document-collection-item__title,
  .marble-document-collection-item__meta {
    min-width: 0;
    max-width: 100%;

    white-space: normal;

    overflow-wrap: anywhere;
    word-break: normal;
  }

  .marble-document-collection-item__meta {
    flex-wrap: wrap;
  }

}

/* MARBLE_DOCUMENTS_MOBILE_FILENAME_OVERFLOW_FIX_V1_END */