.materials-page {
  background: var(--content-bg);
}

.materials-brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: var(--text-on-dark);
  font-weight: 900;
  background:
    linear-gradient(135deg, var(--brand-blue), var(--header-blue));
  border: 1px solid rgba(214, 228, 240, 0.2);
  box-shadow:
    0 12px 30px rgba(7, 90, 156, 0.34),
    inset 0 -8px 18px rgba(0, 0, 0, 0.16);
}

.materials-hero {
  padding-top: 54px;
}

.materials-hero-grid {
  display: grid;
  gap: 34px;
  align-items: center;
}

.materials-hero-preview {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--hero-border);
  border-radius: var(--radius-xl);
  padding: 18px;
  background:
    linear-gradient(180deg, rgba(16, 31, 53, 0.97), rgba(11, 23, 40, 0.97)),
    linear-gradient(135deg, var(--hero-grid-1), var(--hero-grid-2));
  box-shadow: var(--shadow-dark);
}

.materials-hero-preview::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  right: -90px;
  top: -90px;
  border-radius: 999px;
  background:
    radial-gradient(circle, rgba(242, 140, 40, 0.26), transparent 70%);
  pointer-events: none;
}

.materials-preview-toolbar {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}

.materials-preview-toolbar > span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
}

.materials-preview-toolbar > span:nth-child(1) {
  background: var(--danger);
}

.materials-preview-toolbar > span:nth-child(2) {
  background: var(--accent);
}

.materials-preview-toolbar > span:nth-child(3) {
  background: var(--brand-blue-hover);
}

.materials-preview-toolbar small {
  margin-left: auto;
  color: var(--text-soft-on-dark);
  font-size: 0.78rem;
}

.materials-preview-sheet {
  position: relative;
  z-index: 1;
  min-height: 360px;
  padding: 28px;
  border-radius: 22px;
  background:
    linear-gradient(145deg, #ffffff, #eef4fa);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.22);
}

.preview-subject {
  display: inline-flex;
  width: fit-content;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(7, 90, 156, 0.1);
  color: var(--brand-blue);
  font-size: 0.76rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.materials-preview-sheet > strong {
  display: block;
  margin-top: 22px;
  color: var(--text-dark);
  font-size: clamp(2rem, 6vw, 3.3rem);
  letter-spacing: -0.05em;
}

.materials-preview-sheet > p {
  margin-top: 12px;
  max-width: 370px;
  font-size: 1rem;
}

.preview-diagram {
  margin-top: 34px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
}

.preview-sun,
.preview-object {
  min-height: 94px;
  display: grid;
  place-items: center;
  border-radius: 20px;
  font-size: 2rem;
  font-weight: 900;
}

.preview-sun {
  color: var(--accent);
  background: rgba(242, 140, 40, 0.12);
  border: 1px solid rgba(242, 140, 40, 0.26);
}

.preview-object {
  color: var(--brand-blue);
  background: rgba(7, 90, 156, 0.09);
  border: 1px solid rgba(7, 90, 156, 0.22);
}

.preview-arrow {
  color: var(--brand-blue);
  font-size: 1.8rem;
  font-weight: 900;
}

.preview-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
}

.preview-tags span {
  padding: 7px 10px;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid var(--content-border);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.materials-preview-footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  padding: 0 4px;
}

.materials-preview-footer span {
  color: var(--text-soft-on-dark);
  font-size: 0.86rem;
}

.materials-preview-footer strong {
  color: var(--accent);
}

.materials-intro {
  background: var(--content-bg);
}

.subject-grid {
  display: grid;
  gap: 16px;
}

.subject-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  padding: 24px;
  border: 1px solid var(--content-border);
  border-radius: var(--radius-lg);
  background: var(--content-card);
  box-shadow: var(--shadow-card);
}

.subject-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: var(--brand-blue);
  background: rgba(7, 90, 156, 0.1);
  font-size: 1.45rem;
  font-weight: 900;
}

.subject-card strong {
  display: block;
  color: var(--text-dark);
  font-size: 1.18rem;
}

.subject-card p {
  margin-top: 8px;
}

.subject-card > a,
.subject-status {
  grid-column: 2;
  width: fit-content;
  color: var(--brand-blue);
  font-weight: 900;
}

.subject-card > a:hover {
  color: var(--brand-blue-hover);
}

.subject-card-soon {
  opacity: 0.78;
}

.subject-status {
  color: var(--muted-2);
}

.materials-catalog-section {
  background: #ffffff;
}

.materials-catalog-header {
  display: grid;
  gap: 24px;
  align-items: end;
}

.materials-search {
  display: grid;
  gap: 8px;
}

.materials-search label {
  color: var(--text-dark);
  font-weight: 800;
  font-size: 0.9rem;
}

.materials-search input {
  width: 100%;
  min-height: 52px;
  padding: 13px 16px;
  border: 1px solid var(--content-border);
  border-radius: 15px;
  background: var(--content-card);
  color: var(--text);
  font: inherit;
  outline: none;
  box-shadow: 0 10px 28px rgba(7, 17, 31, 0.05);
}

.materials-search input:focus {
  border-color: var(--brand-blue-hover);
  box-shadow:
    0 0 0 4px rgba(31, 134, 199, 0.12),
    0 10px 28px rgba(7, 17, 31, 0.06);
}

.materials-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.material-filter {
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid var(--content-border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--muted);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition:
    color 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease;
}

.material-filter:hover {
  transform: translateY(-1px);
  color: var(--brand-blue);
  border-color: rgba(7, 90, 156, 0.3);
}

.material-filter.is-active {
  color: var(--text-on-dark);
  background:
    linear-gradient(135deg, var(--brand-blue), var(--brand-blue-hover));
  border-color: transparent;
  box-shadow: 0 10px 24px rgba(7, 90, 156, 0.22);
}

.materials-grid {
  display: grid;
  gap: 22px;
}

.material-card {
  overflow: hidden;
  border: 1px solid var(--content-border);
  border-radius: var(--radius-xl);
  background: var(--content-card);
  box-shadow: var(--shadow-card);
  transition:
    transform 0.22s ease,
    box-shadow 0.22s ease;
}

.material-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(7, 17, 31, 0.14);
}

.material-cover {
  min-height: 260px;
  padding: 22px;
  position: relative;
  overflow: hidden;
  color: var(--text-on-dark);
}

.material-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.09) 1px, transparent 1px);
  background-size: 32px 32px;
}

.material-cover::after {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  right: -80px;
  bottom: -90px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
}

.material-cover-physics {
  background:
    radial-gradient(circle at 88% 12%, rgba(242, 140, 40, 0.38), transparent 24rem),
    linear-gradient(145deg, #07111f, #0c3556 58%, #075a9c);
}

.material-cover-chemistry {
  background:
    radial-gradient(circle at 88% 12%, rgba(31, 134, 199, 0.42), transparent 24rem),
    linear-gradient(145deg, #091729, #143c44 58%, #0d6f72);
}

.material-cover-top,
.material-cover-content,
.material-cover-visual {
  position: relative;
  z-index: 1;
}

.material-cover-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.material-cover-top span {
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(7, 17, 31, 0.38);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--text-soft-on-dark);
  font-size: 0.76rem;
  font-weight: 900;
}

.material-cover-content {
  margin-top: 46px;
}

.material-cover-content small {
  display: block;
  color: var(--accent);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.material-cover-content strong {
  display: block;
  margin-top: 8px;
  font-size: clamp(2rem, 7vw, 3.1rem);
  letter-spacing: -0.05em;
}

.material-cover-content p {
  margin-top: 10px;
  color: var(--text-soft-on-dark);
  max-width: 320px;
}

.material-cover-visual {
  display: flex;
  gap: 10px;
  margin-top: 32px;
}

.material-cover-visual span {
  min-width: 54px;
  min-height: 54px;
  padding: 12px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: rgba(7, 17, 31, 0.34);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--text-on-dark);
  font-weight: 900;
}

.material-card-content {
  padding: 24px;
}

.material-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.material-tags span {
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--content-bg);
  border: 1px solid var(--content-border);
  color: var(--brand-blue);
  font-size: 0.76rem;
  font-weight: 800;
}

.material-card h3 {
  margin-top: 18px;
  font-size: 1.34rem;
}

.material-card-content > p {
  margin-top: 12px;
}

.material-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
  color: var(--muted-2);
  font-size: 0.82rem;
  font-weight: 700;
}

.material-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.material-meta span::before {
  content: "•";
  color: var(--accent);
}

.material-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.material-actions .button {
  flex: 1 1 150px;
}

.material-preview-button {
  color: var(--brand-blue);
  background: #ffffff;
  border: 1px solid var(--content-border);
  cursor: pointer;
  font: inherit;
}

.material-preview-button:hover:not(:disabled) {
  color: var(--text-on-dark);
  background: var(--accent);
  border-color: var(--accent);
}

.material-preview-button:disabled {
  color: var(--muted-2);
  background: #f1f1f1;
  cursor: not-allowed;
}

.material-preview-button:disabled:hover {
  transform: none;
}

.materials-empty-state {
  margin-top: 24px;
  padding: 24px;
  border: 1px dashed var(--content-border);
  border-radius: var(--radius-lg);
  background: var(--content-bg);
  text-align: center;
  font-weight: 700;
}

.materials-how-section {
  background:
    linear-gradient(180deg, var(--content-bg), #ffffff);
}

.materials-section-lead {
  margin-top: 18px;
  font-size: 1.05rem;
}

.autositeduc-promo-section {
  background: #ffffff;
}

.autositeduc-promo-card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 30px;
  align-items: center;
  padding: 30px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--hero-border);
  background:
    radial-gradient(circle at 0% 0%, rgba(31, 134, 199, 0.2), transparent 26rem),
    radial-gradient(circle at 100% 100%, rgba(242, 140, 40, 0.14), transparent 25rem),
    linear-gradient(145deg, #07111f, #0b1728 55%, #101f35);
  box-shadow: var(--shadow-dark);
}

.autositeduc-promo-copy {
  position: relative;
  z-index: 1;
}

.autositeduc-promo-copy h2 {
  color: var(--text-on-dark);
}

.autositeduc-promo-copy > p {
  margin-top: 16px;
  color: var(--text-soft-on-dark);
}

.autositeduc-promo-points {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.autositeduc-promo-points span {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text-soft-on-dark);
}

.autositeduc-promo-points span::before {
  content: "✓";
  color: var(--accent);
  font-weight: 900;
}

.autositeduc-secondary-button {
  color: var(--text-on-dark);
  border: 1px solid var(--hero-border);
  background: rgba(255, 255, 255, 0.06);
}

.autositeduc-secondary-button:hover {
  border-color: rgba(242, 140, 40, 0.55);
  background: rgba(242, 140, 40, 0.12);
}

.autositeduc-promo-visual {
  position: relative;
  z-index: 1;
  overflow: hidden;
  padding: 16px;
  border: 1px solid var(--hero-border);
  border-radius: 22px;
  background: rgba(7, 17, 31, 0.56);
}

.autositeduc-promo-visual img {
  width: 100%;
  display: block;
  border-radius: 16px;
  border: 1px solid var(--hero-inner-border);
}

.autositeduc-promo-caption {
  display: grid;
  gap: 4px;
  margin-top: 14px;
}

.autositeduc-promo-caption strong {
  color: var(--text-on-dark);
}

.autositeduc-promo-caption span {
  color: var(--text-soft-on-dark);
  font-size: 0.88rem;
}

.material-modal[hidden] {
  display: none;
}

.material-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 18px;
}

.material-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 10, 19, 0.78);
  backdrop-filter: blur(8px);
}

.material-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 980px);
  max-height: min(90vh, 900px);
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid var(--hero-border);
  background: var(--content-card);
  box-shadow: var(--shadow-dark);
}

.material-modal-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding: 18px 20px;
  border-bottom: 1px solid var(--content-border);
}

.material-modal-header div {
  display: grid;
  gap: 3px;
}

.material-modal-header small {
  color: var(--muted-2);
}

.material-modal-header strong {
  color: var(--text-dark);
  font-size: 1.06rem;
}

.material-modal-close {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--content-border);
  border-radius: 13px;
  background: #ffffff;
  color: var(--text-dark);
  font-size: 1.6rem;
  cursor: pointer;
}

.material-modal-close:hover {
  color: var(--text-on-dark);
  background: var(--brand-blue);
  border-color: var(--brand-blue);
}

.material-modal-content {
  overflow: auto;
  display: grid;
  gap: 18px;
  padding: 20px;
  background: var(--content-bg);
}

.material-modal-content img {
  width: 100%;
  display: block;
  border-radius: 16px;
  border: 1px solid var(--content-border);
  background: #ffffff;
  box-shadow: var(--shadow-card);
}

.materials-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

@media (min-width: 761px) {
  .materials-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  }

  .subject-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .subject-card {
    grid-template-columns: auto 1fr;
  }

  .materials-catalog-header {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  }

  .materials-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .autositeduc-promo-card {
    grid-template-columns: minmax(0, 1.04fr) minmax(360px, 0.96fr);
    padding: 42px;
  }
}

@media (min-width: 1180px) {
  .materials-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .materials-hero {
    padding-top: 40px;
  }

  .materials-preview-sheet {
    min-height: 320px;
    padding: 22px;
  }

  .preview-diagram {
    grid-template-columns: 1fr;
  }

  .preview-arrow {
    transform: rotate(90deg);
    text-align: center;
  }

  .subject-card {
    grid-template-columns: auto 1fr;
  }

  .materials-catalog-header .section-heading {
    margin-bottom: 0;
  }

  .material-card-content {
    padding: 20px;
  }

  .autositeduc-promo-card {
    padding: 24px;
  }

  .material-modal {
    padding: 10px;
  }

  .material-modal-content {
    padding: 14px;
  }
}


.materials-preview-sheet-photo {
  min-height: auto;
  padding: 0;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.materials-preview-image {
  width: 100%;
  display: block;
  border-radius: 22px;
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.22);
}

.materials-preview-thumbs {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.materials-preview-thumbs img {
  width: 100%;
  display: block;
  border-radius: 16px;
  border: 1px solid var(--hero-inner-border);
  background: #ffffff;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
}

.catalog-autositeduc-cta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  margin-bottom: 30px;
  padding: 24px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--hero-border);
  background:
    radial-gradient(circle at 0% 0%, rgba(31, 134, 199, 0.18), transparent 22rem),
    radial-gradient(circle at 100% 100%, rgba(242, 140, 40, 0.12), transparent 20rem),
    linear-gradient(145deg, #07111f, #0b1728 58%, #101f35);
  box-shadow: var(--shadow-dark);
}

.catalog-autositeduc-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: var(--text-on-dark);
  font-size: 1.35rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-hover));
  box-shadow: 0 12px 28px rgba(7, 90, 156, 0.3);
}

.catalog-autositeduc-copy {
  display: grid;
  gap: 6px;
}

.catalog-autositeduc-copy > span {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.catalog-autositeduc-copy > strong {
  color: var(--text-on-dark);
  font-size: 1.08rem;
  line-height: 1.35;
}

.catalog-autositeduc-copy > p {
  color: var(--text-soft-on-dark);
  font-size: 0.92rem;
}

.catalog-autositeduc-cta .button {
  grid-column: 1 / -1;
}

@media (min-width: 761px) {
  .catalog-autositeduc-cta {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .catalog-autositeduc-cta .button {
    grid-column: auto;
    white-space: nowrap;
  }
}


/* Controle de exibição do catálogo */
.materials-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 28px;
}

.materials-controls .materials-filters {
  margin-bottom: 0;
}

.materials-visibility-toggle {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--content-border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--brand-blue);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 10px 26px rgba(7, 17, 31, 0.07);
  transition:
    transform 0.2s ease,
    color 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.materials-visibility-toggle:hover {
  transform: translateY(-2px);
  border-color: rgba(7, 90, 156, 0.38);
  box-shadow: 0 14px 32px rgba(7, 17, 31, 0.11);
}

.materials-visibility-toggle[aria-expanded="true"] {
  color: var(--text-on-dark);
  border-color: transparent;
  background: linear-gradient(
    135deg,
    var(--brand-blue),
    var(--brand-blue-hover)
  );
}

.materials-eye {
  position: relative;
  width: 24px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
}

.materials-eye svg {
  position: absolute;
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition:
    opacity 0.28s ease,
    transform 0.28s ease;
}

.materials-eye-open {
  opacity: 0;
  transform: scale(0.65) rotate(-12deg);
}

.materials-eye-closed {
  opacity: 1;
  transform: scale(1) rotate(0);
}

.materials-visibility-toggle[aria-expanded="true"] .materials-eye-open {
  opacity: 1;
  transform: scale(1) rotate(0);
}

.materials-visibility-toggle[aria-expanded="true"] .materials-eye-closed {
  opacity: 0;
  transform: scale(0.65) rotate(12deg);
}

@media (max-width: 760px) {
  .materials-controls {
    align-items: stretch;
  }

  .materials-controls .materials-filters {
    width: 100%;
  }

  .materials-visibility-toggle {
    width: 100%;
  }
}


/* Exibição animada apenas dos cards das notas de aula */
.materials-grid[data-materials-catalog-content] {
  max-height: 0;
  margin-top: 0;
  opacity: 0;
  overflow: hidden;
  visibility: hidden;
  transform: translateY(-12px);
  pointer-events: none;
  transition:
    max-height 0.65s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.3s ease,
    transform 0.55s cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0s linear 0.65s,
    margin-top 0.4s ease;
}

.materials-grid[data-materials-catalog-content].is-open {
  max-height: 20000px;
  margin-top: 0;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
  transition:
    max-height 0.9s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.38s ease 0.08s,
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0s linear 0s,
    margin-top 0.4s ease;
}

/* Evita espaço residual quando a grade está recolhida */
.materials-grid[data-materials-catalog-content]:not(.is-open) {
  gap: 0;
}

.materials-grid[data-materials-catalog-content]:not(.is-open)
  .material-card {
  margin: 0;
}

/* =========================================================
   Responsividade da página de materiais
   ========================================================= */

/* Notebooks de 13" e 15" */
@media (min-width: 761px) and (max-width: 1180px) {
  .materials-hero-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .materials-hero .hero-copy {
    max-width: 760px;
  }

  .materials-hero-preview {
    width: min(100%, 760px);
    margin-inline: auto;
  }

  .subject-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .materials-catalog-header {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .materials-search {
    width: min(100%, 620px);
  }

  .materials-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .material-card,
  .material-card-content,
  .material-cover {
    min-width: 0;
  }

  .material-actions {
    flex-wrap: wrap;
  }
}

/* Faixa intermediária comum em notebooks de 13" */
@media (min-width: 761px) and (max-width: 980px) {
  .subject-grid,
  .materials-grid {
    grid-template-columns: 1fr;
  }

  .materials-grid {
    width: min(100%, 720px);
    margin-inline: auto;
  }
}

/* Desktops médios */
@media (min-width: 1181px) and (max-width: 1440px) {
  .materials-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
    gap: 38px;
  }

  .materials-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

/* Monitores maiores */
@media (min-width: 1681px) {
  .materials-hero-grid {
    gap: 64px;
  }

  .materials-grid {
    gap: 26px;
  }

  .material-card-content {
    padding: 26px;
  }
}