.materials-shell {
  max-width: 1180px;
}

.materials-hero,
.materials-panel,
.materials-card,
.materials-filter {
  background: linear-gradient(145deg, rgba(255,255,255,.2), rgba(189,216,233,.12));
  border: 1px solid rgba(255,255,255,.34);
  box-shadow: 0 22px 68px rgba(0,29,57,.22), inset 0 1px 0 rgba(255,255,255,.34);
  backdrop-filter: blur(28px) saturate(1.14);
  -webkit-backdrop-filter: blur(28px) saturate(1.14);
}

.materials-course-grid,
.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1rem;
}

.materials-card {
  display: flex;
  flex-direction: column;
  min-height: 11rem;
  padding: 1.3rem;
  border-radius: 1.25rem;
  color: #102943;
  text-decoration: none;
}

.materials-card h3,
.materials-card h4 {
  margin: .4rem 0 .55rem;
  color: #102943;
  font-weight: 900;
  line-height: 1.1;
}

.materials-card p {
  color: #264965;
  font-weight: 700;
  line-height: 1.45;
}

.materials-card span {
  color: #0b5ed7;
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.materials-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: auto;
  min-height: 2.6rem;
  width: fit-content;
  padding: .65rem 1rem;
  border-radius: 999px;
  background: rgba(255,255,255,.58);
  border: 1px solid rgba(255,255,255,.68);
  color: #102943;
  font-weight: 900;
}

.materials-tabs,
.materials-session-row {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}

.materials-tab,
.materials-session-button,
.materials-admin-button {
  min-height: 2.8rem;
  padding: .7rem 1rem;
  border-radius: 999px;
  background: rgba(255,255,255,.5);
  border: 1px solid rgba(255,255,255,.66);
  color: #102943;
  font-weight: 900;
}

.materials-tab.is-active,
.materials-session-button.is-active,
.materials-admin-button {
  background: linear-gradient(135deg, rgba(123,189,232,.9), rgba(10,65,116,.86));
  color: #fff;
}

.materials-course-section {
  margin-top: 1rem;
  border-radius: 1.35rem;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.28);
  background: rgba(255,255,255,.12);
}

.materials-folder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 1.25rem;
  animation: materialsGridIn .34s cubic-bezier(.2,.8,.2,1) both;
}

.materials-folder-card {
  appearance: none;
  border: 0;
  cursor: pointer;
  display: grid;
  justify-items: center;
  gap: .55rem;
  min-height: 15rem;
  padding: 1rem;
  border-radius: 1.35rem;
  background: transparent;
  color: #102943;
  text-align: center;
  transform-origin: center bottom;
  transition: transform .32s cubic-bezier(.2,.8,.2,1), background .24s ease, box-shadow .24s ease;
}

.materials-folder-card:hover,
.materials-folder-card:focus-visible {
  background: rgba(255,255,255,.14);
  box-shadow: 0 24px 54px rgba(0,29,57,.18);
  transform: translateY(-8px) scale(1.035);
  outline: none;
}

.materials-folder-visual {
  position: relative;
  display: block;
  width: 10.8rem;
  height: 8.4rem;
  perspective: 700px;
}

.materials-folder-tab {
  position: absolute;
  left: 1rem;
  top: 1.05rem;
  width: 4.6rem;
  height: 1.7rem;
  border-radius: .75rem .75rem .2rem .2rem;
  background: linear-gradient(145deg, #d8e6f1, #91b6d0);
  border: 1px solid rgba(255,255,255,.72);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.72);
}

.materials-folder-body {
  position: absolute;
  inset: 2rem .55rem .45rem;
  border-radius: 1rem;
  background: linear-gradient(145deg, #d8e8f3, #87aeca 44%, #4f779f);
  border: 1px solid rgba(255,255,255,.72);
  box-shadow: 0 22px 46px rgba(0,29,57,.24), inset 0 1px 0 rgba(255,255,255,.68);
  overflow: hidden;
  transform-origin: center bottom;
  transition: transform .38s cubic-bezier(.2,.8,.2,1);
}

.materials-folder-card:hover .materials-folder-body,
.materials-folder-card:focus-visible .materials-folder-body {
  transform: rotateX(-10deg) translateY(-4px);
}

.materials-folder-paper {
  position: absolute;
  left: 1.15rem;
  top: -.75rem;
  width: 5.9rem;
  height: 4.2rem;
  border-radius: .55rem;
  background: rgba(255,255,255,.82);
  border: 1px solid rgba(255,255,255,.9);
  transform: rotate(-7deg);
  transition: transform .34s cubic-bezier(.2,.8,.2,1);
}

.materials-folder-paper.two {
  left: 3.2rem;
  top: -.45rem;
  transform: rotate(8deg);
  opacity: .78;
}

.materials-folder-card:hover .materials-folder-paper.one,
.materials-folder-card:focus-visible .materials-folder-paper.one {
  transform: rotate(-12deg) translateY(-9px);
}

.materials-folder-card:hover .materials-folder-paper.two,
.materials-folder-card:focus-visible .materials-folder-paper.two {
  transform: rotate(12deg) translateY(-7px);
}

.materials-folder-icon {
  position: absolute;
  left: 1rem;
  bottom: .85rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: .65rem;
  background: rgba(255,255,255,.76);
  color: #102943;
  font-weight: 900;
  box-shadow: 0 8px 18px rgba(0,29,57,.16);
}

.materials-folder-kicker {
  color: #0b5ed7;
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .18em;
}

.materials-folder-card strong {
  color: #102943;
  font-size: 1.16rem;
  font-weight: 900;
  line-height: 1.1;
}

.materials-folder-card small {
  color: #42627d;
  font-weight: 800;
}

.materials-folder-view {
  padding: 1.35rem;
  border-radius: 1.5rem;
  background: linear-gradient(145deg, rgba(255,255,255,.2), rgba(189,216,233,.12));
  border: 1px solid rgba(255,255,255,.34);
  box-shadow: 0 22px 68px rgba(0,29,57,.22), inset 0 1px 0 rgba(255,255,255,.34);
  animation: materialsFolderOpen .38s cubic-bezier(.2,.8,.2,1) both;
  transform-origin: center top;
}

.materials-folder-view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.materials-folder-view-header h2 {
  color: #102943;
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.05;
}

.materials-back-button {
  flex: 0 0 auto;
  min-height: 2.65rem;
  padding: .65rem 1rem;
  border-radius: 999px;
  background: rgba(255,255,255,.62);
  border: 1px solid rgba(255,255,255,.7);
  color: #102943;
  font-weight: 900;
}

@keyframes materialsGridIn {
  from { opacity: 0; transform: translateY(12px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes materialsFolderOpen {
  from { opacity: 0; transform: translateY(20px) scale(.94); filter: blur(8px); }
  to { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}

.materials-course-section summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  padding: 1.2rem 1.4rem;
  list-style: none;
}

.materials-course-section summary::-webkit-details-marker {
  display: none;
}

.materials-course-section summary h3 {
  color: #102943;
  font-size: 1.45rem;
  font-weight: 900;
}

.materials-course-section[open] .materials-section-toggle::before {
  content: "Inchide";
}

.materials-section-toggle::before {
  content: "Deschide";
}

.materials-section-toggle {
  flex: 0 0 auto;
  padding: .65rem 1rem;
  border-radius: 999px;
  background: rgba(255,255,255,.62);
  color: #102943;
  font-weight: 900;
}

@media (max-width: 768px) {
  .materials-shell {
    width: 100%;
    max-width: none;
    padding: 1.25rem 1.05rem 2rem !important;
  }

  .materials-shell > .materials-action {
    margin: 0 0 1rem !important;
    min-height: 2.85rem;
    padding: .72rem 1rem;
    font-size: .95rem;
  }

  .materials-hero {
    border-radius: 1.55rem !important;
    padding: 1.85rem 1.55rem !important;
    margin-bottom: 1.25rem !important;
  }

  .materials-hero p:first-child,
  #courseKicker {
    font-size: .75rem !important;
    letter-spacing: .2em !important;
  }

  .materials-hero h1,
  #courseTitle {
    margin-top: .8rem !important;
    font-size: clamp(2.1rem, 12vw, 3.2rem) !important;
    line-height: .98 !important;
    max-width: 8.5ch;
    overflow-wrap: anywhere;
  }

  .materials-hero p:not(:first-child) {
    margin-top: 1.25rem !important;
    font-size: 1rem !important;
    line-height: 1.55 !important;
  }

  .materials-folder-view {
    padding: 1.15rem !important;
    border-radius: 1.45rem !important;
  }

  .materials-folder-view-header {
    display: flex;
    flex-direction: column-reverse;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 1rem;
    margin-bottom: 1.15rem;
  }

  .materials-folder-view-header > div {
    width: 100%;
    text-align: left;
  }

  .materials-folder-view-header h2 {
    width: 100%;
    max-width: 11ch;
    font-size: clamp(2rem, 10vw, 2.85rem) !important;
    line-height: 1.02 !important;
    overflow-wrap: anywhere;
  }

  .materials-folder-view-header p {
    font-size: .72rem !important;
    letter-spacing: .22em !important;
  }

  .materials-back-button {
    min-height: 2.8rem;
    padding: .75rem 1rem;
    font-size: .92rem;
  }

  .materials-folder-grid,
  .materials-session-folder-grid {
    grid-template-columns: 1fr;
    gap: .85rem;
  }

  .materials-folder-card {
    min-height: 12rem;
    padding: .8rem;
  }

  .materials-folder-visual {
    width: 9rem;
    height: 7rem;
  }

  .materials-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: .85rem;
  }

  .materials-item {
    width: 100%;
    padding: 1rem !important;
    border-radius: 1.05rem !important;
  }

  .materials-item h4 {
    font-size: 1rem !important;
    line-height: 1.25 !important;
  }

  .materials-item p {
    font-size: .92rem !important;
    line-height: 1.45 !important;
    overflow-wrap: anywhere;
  }

  .materials-item-actions {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    gap: .65rem !important;
    align-items: stretch;
    margin-top: .9rem;
  }

  .materials-item-actions a,
  .materials-item-actions button {
    width: 100%;
    min-height: 2.7rem;
    padding: .7rem .8rem !important;
    border-radius: 999px !important;
    font-size: .9rem !important;
    text-align: center;
    justify-content: center;
    white-space: nowrap;
  }
}

@media (max-width: 420px) {
  .materials-shell {
    padding-left: .9rem !important;
    padding-right: .9rem !important;
  }

  .materials-hero {
    padding: 1.65rem 1.35rem !important;
  }

  .materials-folder-view {
    padding: 1rem !important;
  }

  .materials-folder-view-header h2 {
    max-width: 9.5ch;
  }

  .materials-item-actions {
    gap: .55rem !important;
  }
}

.materials-section-body {
  padding: 0 1.35rem 1.35rem;
}

.materials-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: .9rem;
  margin-top: 1rem;
}

.materials-item {
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(255,255,255,.48);
  border: 1px solid rgba(255,255,255,.58);
}

.materials-item h4 {
  color: #102943;
  font-size: 1.05rem;
  font-weight: 900;
  line-height: 1.2;
}

.materials-item p {
  margin-top: .35rem;
  color: #385a74;
  font-weight: 700;
}

.materials-item > a,
.materials-delete {
  display: inline-flex;
  min-height: 2.45rem;
  align-items: center;
  justify-content: center;
  margin-top: .75rem;
  padding: .58rem .9rem;
  border-radius: 999px;
  background: rgba(255,255,255,.68);
  color: #102943;
  font-weight: 900;
  text-decoration: none;
}

.materials-item-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: .9rem;
  align-items: center;
}

.materials-item-actions a,
.materials-item-actions button {
  appearance: none;
  display: inline-flex;
  min-height: 2.65rem;
  align-items: center;
  justify-content: center;
  padding: .68rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.66);
  font-weight: 900;
  line-height: 1;
  text-decoration: none;
  margin-top: 0;
  box-shadow: 0 10px 24px rgba(0,29,57,.14), inset 0 1px 0 rgba(255,255,255,.62);
}

.materials-item-actions a {
  background: rgba(255,255,255,.72);
  color: #102943;
}

.materials-item-actions button.materials-download-button,
.materials-item-actions button {
  cursor: pointer;
  background: linear-gradient(135deg, rgba(123,189,232,.92), rgba(10,65,116,.9));
  color: #fff;
  min-width: 7.6rem;
}

.materials-item-actions button:disabled {
  cursor: wait;
  opacity: .72;
}

.assignment-saved-folder {
  border-radius: 1.25rem;
  border: 1px solid rgba(255,255,255,.34);
  background: rgba(255,255,255,.14);
  overflow: hidden;
  margin-bottom: .85rem;
}

.assignment-saved-folder summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  list-style: none;
  color: #102943;
  font-weight: 900;
}

.assignment-saved-folder summary::-webkit-details-marker {
  display: none;
}

.assignment-saved-folder summary strong {
  display: inline-flex;
  min-width: 2.2rem;
  min-height: 2.2rem;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(255,255,255,.62);
}

.assignment-saved-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: .85rem;
  padding: 0 1rem 1rem;
}

.assignment-saved-card {
  display: grid;
  gap: .75rem;
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(232,240,246,.58);
  border: 1px solid rgba(255,255,255,.58);
}

.assignment-saved-card-current {
  max-width: 56rem;
}

.assignment-save-notice {
  margin-bottom: .9rem;
  padding: .9rem 1rem;
  border-radius: 1rem;
  background: rgba(220,252,231,.86);
  border: 1px solid rgba(134,239,172,.72);
  color: #14532d;
  font-weight: 900;
}

.assignment-saved-kicker {
  color: #0b5ed7;
  font-size: .76rem;
  font-weight: 900;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.assignment-saved-card h3 {
  color: #102943;
  font-weight: 900;
  line-height: 1.18;
}

.assignment-saved-card p {
  color: #385a74;
  font-weight: 800;
}

.assignment-saved-preview {
  line-height: 1.45;
}

.assignment-saved-compact-note {
  padding: .75rem .85rem;
  border-radius: .85rem;
  background: rgba(255,255,255,.46);
  border: 1px solid rgba(255,255,255,.54);
}

.assignment-current-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .8rem;
  margin-bottom: 1rem;
}

.assignment-add-button {
  min-height: 3rem;
  padding: .78rem 1.15rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.72);
  background: linear-gradient(135deg, rgba(123,189,232,.98), rgba(10,65,116,.96));
  color: #fff;
  font-weight: 950;
  box-shadow: 0 14px 32px rgba(0,29,57,.2), inset 0 1px 0 rgba(255,255,255,.36);
}

.assignment-add-button:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

.assignment-current-hint {
  color: #284962;
  font-weight: 850;
}

.assignment-current-grid {
  grid-template-columns: repeat(auto-fit, minmax(19rem, 28rem));
  padding: 0;
}

.assignment-saved-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
}

.assignment-saved-actions button {
  min-height: 2.45rem;
  padding: .62rem .9rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.64);
  background: rgba(255,255,255,.72);
  color: #102943;
  font-weight: 900;
}

.assignment-saved-actions button[data-delete-assignment] {
  background: rgba(255,238,238,.88);
  color: #8f1d1d;
}

.materials-delete {
  background: rgba(255,238,238,.86);
  color: #8f1d1d;
}

.materials-empty {
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(255,255,255,.34);
  color: #264965;
  font-weight: 800;
}

.materials-admin-form {
  display: grid;
  gap: 1rem;
}

.admin-material-course-picker {
  display: grid;
  gap: .45rem;
  min-width: 16rem;
  color: #102943;
  font-weight: 900;
}

.admin-material-course-picker select,
.admin-material-category-choice select {
  min-height: 3rem;
  padding: .7rem 1rem;
  border-radius: 1rem;
  border: 1px solid rgba(255,255,255,.58);
  background: rgba(232,240,246,.9);
  color: #102943;
  font-weight: 900;
}

.admin-material-autofilled-controls {
  display: none !important;
}

.admin-material-folder-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-bottom: 1rem;
}

.admin-material-folder-actions .materials-back-button {
  cursor: pointer;
}

.admin-material-selection-note {
  display: inline-flex;
  align-items: center;
  min-height: 2.7rem;
  padding: .65rem 1rem;
  border-radius: 999px;
  background: rgba(255,255,255,.42);
  border: 1px solid rgba(255,255,255,.56);
  color: #102943;
  font-weight: 900;
}

.admin-material-category-choice {
  display: grid;
  gap: .45rem;
}

.materials-admin-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem;
}

.materials-admin-form label {
  display: grid;
  gap: .45rem;
  color: #102943;
  font-weight: 900;
}

.materials-admin-form input,
.materials-admin-form select,
.materials-admin-form textarea {
  width: 100%;
  min-height: 3.1rem;
  padding: .75rem 1rem;
  border-radius: 1rem;
  border: 1px solid rgba(255,255,255,.5);
  background: rgba(232,240,246,.9);
  color: #102943;
  font-weight: 800;
}

@media (max-width: 720px) {
  .materials-course-section summary {
    align-items: flex-start;
    flex-direction: column;
  }
}