/* ============================================
   Cards — material cards, modifiers, placeholders
   ============================================ */

/* =====================
   MATERIAL CARD (base)
   ===================== */
.material-card {
  flex: 0 0 auto;
  width: var(--card-width);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
  scroll-snap-align: start;
}

.card-tag {
  margin-top: 0;
  padding: 9px 12px;
  border-radius: 8px;
  background: var(--color-gray-300);
  color: var(--color-main);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-normal);
  max-width: 134px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.material-card:hover {
  box-shadow: var(--shadow-md);
}

.card-image {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.card-image img,
.card-image .card-cover-img,
.card-image .card-placeholder {
  width: 100%;
  display: block;
  vertical-align: top;
}

.card-cover-img {
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-weight: var(--font-weight-medium);
  color: var(--color-main);
  margin-bottom: 4px;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-subtitle {
  font-size: var(--font-size-md);
  color: var(--color-gray-500);
  margin-bottom: 12px;
}

.card-description {
  font-size: var(--font-size-md);
  color: var(--color-gray-700);
  margin-bottom: 12px;
  line-height: 1.4;
}

.card-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: var(--space-sm);
  flex-wrap: wrap;
}

.card-icon-start {
  position: absolute;
  top: 12px;
  left: 12px;
  width: auto !important;
  z-index: 100;
}

/* =====================
   BOOK CARD modifier
   ===================== */
.material-card--book {
  width: 284px;
  border-radius: var(--radius-header);
  border: var(--border-card);
  position: relative;
  background: var(--color-white);
}

.material-card--book .card-image {
  position: relative;
}

.material-card--book .card-image .card-cover-img {
  border-radius: var(--radius-xl);
  width: 200px;
  height: 275px;
  padding-left: 16px;
  padding-top: 16px;
  object-fit: cover;
  display: block;
}

/* Иконка уровня (существующий SVG) — позиция на карточке книги */
.material-card--book .card-icons {
  position: absolute;
  top: 16px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Текст и тег карточки книги по макету */
.material-card--book .card-body {
  padding: 12px 16px 16px;
}

.material-card--book .card-title {
  font-size: var(--font-size-md);
}

/* =====================
   WORKSHEET CARD modifier
   ===================== */
.material-card--worksheet {
  background: var(--color-white);
  border-radius: var(--radius-header);
  border: var(--border-card);
  position: relative;
  width: 348px;
  height: 302px;
}

.material-card--worksheet .card-image img:first-child {
  border-radius: var(--radius-header) var(--radius-header) 0 0;
}

.material-card--worksheet .card-icon-start {
  position: absolute;
  top: 12px;
  left: 12px;
}

/* Body — title and description */
.material-card--worksheet .card-body {
  padding: 20px;
  position: absolute;
  background: var(--color-white);
  height: 176px;
  width: 100%;
  bottom: 0;
  border-radius: 0 20px 0 0;
}

.material-card--worksheet .card-body .additional {
  width: 100%;
  position: absolute;
  top: -24px;
  left: 0;
}

.material-card--worksheet .card-title {
  font-size: 20px;
  font-weight: var(--font-weight-medium);
  color: var(--color-main);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.material-card--worksheet .card-description {
  font-size: var(--font-size-md);
  color: var(--color-gray-700);
  margin-bottom: 12px;
  line-height: 1.4;
}

/* =====================
   TEST CARD modifier MATERIAL BANK CARD modifier
   ===================== */
.material-card--test,
.material-card--bank {
  background: var(--color-white);
  border-radius: var(--radius-header);
  border: var(--border-card);
  position: relative;
  width: 348px;
  height: 294px;
}

.material-card--test .card-image img:first-child,
.material-card--bank .card-image img:first-child {
  border-radius: var(--radius-header) var(--radius-header) 0 0;
}

.material-card--test .card-icon-start,
.material-card--bank .card-icon-start {
  position: absolute;
  top: 12px;
  left: 12px;
}

.material-card--test .card-body,
.material-card--bank .card-body {
  padding: 20px;
  position: absolute;
  background: var(--color-white);
  height: 176px;
  width: 100%;
  bottom: 0;
  border-radius: 20px 20px 0 0;
}

.material-card--test .card-title,
.material-card--bank .card-title {
  font-size: 20px;
  font-weight: var(--font-weight-medium);
  color: var(--color-main);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.material-card--test .card-description,
.material-card--bank .card-description {
  font-size: var(--font-size-md);
  color: var(--color-gray-700);
  margin-bottom: 8px;
  line-height: 1.4;
}

/* =====================
   INTERACTIVE CARD modifier
   ===================== */
.material-card--interactive {
  background: var(--color-white);
  border-radius: var(--radius-header);
  border: var(--border-card);
  position: relative;
  width: 348px;
  padding: 20px;
}

.material-card--interactive .card-body {
  padding: 20px 0 0 0;
}

.material-card--interactive .card-title {
  font-size: 20px;
  font-weight: var(--font-weight-medium);
  color: var(--color-main);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* =====================
   METHODOLOGY CARD modifier
   ===================== */
.material-card--methodology {
  width: 469px;
  height: 340px;
  position: relative;
  border-radius: var(--radius-header);
}

.material-card--methodology img {
  border-radius: var(--radius-header);
  position: relative;
}

.material-card--methodology .card-body {
  position: absolute;
  height: 100%;
}

.material-card--methodology .card-icon {
  width: 40px !important;
  border-radius: 0 !important;
}

.material-card--methodology .card-title {
  font-size: var(--font-size-2xl);
  width: 85%;
}

/* =====================
   SCROLL ARROW BUTTON
   ===================== */
.scroll-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5;
  color: var(--color-gray-700);
  transition: all var(--transition-fast);
}

.scroll-arrow:hover {
  background: var(--color-gray-50);
  border-color: var(--color-gray-400);
}

.scroll-arrow--right {
  right: -8px;
}

.scroll-arrow--left {
  left: -8px;
}