/**
 * VPR 7 - Task 3: File Types
 * Специфичные стили для задания 3
 */

/* Импорт общих стилей */
@import url("vpr7-common.css");

/* ============================================
   Extensions Pool
   ============================================ */
.extensions-pool {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 15px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.extensions-pool h3 {
  color: #333;
  margin-bottom: 15px;
  text-align: center;
  font-size: 1rem;
}

.extensions-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  min-height: 60px;
  padding: 10px;
  background: #f0f4f8;
  border-radius: 10px;
  border: 2px dashed #b0bec5;
}

.extension-item {
  background: linear-gradient(145deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 10px 18px;
  border-radius: 8px;
  cursor: grab;
  user-select: none;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
  transition:
    transform 0.2s,
    box-shadow 0.2s;
  touch-action: none;
}

.extension-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

.extension-item.dragging {
  opacity: 0.5;
  cursor: grabbing;
}

.extension-item.placed {
  background: linear-gradient(145deg, #11998e 0%, #38ef7d 100%);
  box-shadow: 0 4px 12px rgba(17, 153, 142, 0.3);
}

/* ============================================
   Categories Grid
   ============================================ */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  margin-bottom: 20px;
}

@media (max-width: 900px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .categories-grid {
    grid-template-columns: 1fr;
  }
}

.category-card {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  padding: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s;
}

.category-card h4 {
  color: #333;
  font-size: 0.95rem;
  margin-bottom: 10px;
  text-align: center;
  padding-bottom: 8px;
  border-bottom: 2px solid #e0e0e0;
}

.category-dropzone {
  min-height: 80px;
  padding: 10px;
  background: #f8f9fa;
  border: 2px dashed #b0bec5;
  border-radius: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: flex-start;
  align-content: flex-start;
  transition:
    background 0.2s,
    border-color 0.2s;
}

.category-dropzone.drag-over {
  background: rgba(102, 126, 234, 0.15);
  border-color: #667eea;
}

.category-dropzone .extension-item {
  padding: 6px 12px;
  font-size: 0.9rem;
}

.category-card.correct h4 {
  color: #11998e;
  border-bottom-color: #38ef7d;
}

.category-card.incorrect h4 {
  color: #eb3349;
  border-bottom-color: #f45c43;
}

/* ============================================
   Responsive overrides
   ============================================ */
@media (max-width: 600px) {
  .extension-item {
    padding: 8px 14px;
    font-size: 0.9rem;
  }
}

/* ============================================
   Hint Box Overrides for Task 3
   ============================================ */
.hint-box {
  background: #fff3cd;
  border-left: 4px solid #ffc107;
  padding: 15px;
  margin-top: 15px;
  border-radius: 0 8px 8px 0;
  font-size: 0.9rem;
  display: none;
  max-height: 400px;
  overflow-y: auto;
  line-height: 1.5;
}

.hint-box strong {
  color: #856404;
  display: block;
  margin-bottom: 10px;
}

#hintText {
  display: block;
  margin-top: 5px;
  color: #666;
}