.main__container {
  background-color: var(--color-background);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 5rem;
  height: 40rem;
}

.patents-container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 2rem;
}

.patents-header {
  text-align: center;
  margin-bottom: 3rem;
  padding-top: 6rem;
}

.patents-header h1 {
  color: var(--color-primary);
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.patents-header p {
  color: var(--color-text);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

.patents-filter {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.filter-btn {
  background-color: var(--color-background);
  color: var(--color-text);
  border: 1px solid var(--color-primary);
  padding: 0.5rem 1.5rem;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--body-font);
  font-weight: 500;
}

.filter-btn:hover {
  background-color: var(--color-hover);
}

.filter-btn.active {
  background-color: var(--color-primary);
  color: white;
}

.patents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.patent-card {
  background-color: var(--color-background);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 12px var(--box-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.patent-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px var(--box-shadow);
}

.patent-header {
  background-color: var(--color-primary);
  color: white;
  padding: 1.5rem;
  position: relative;
}

.patent-status {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background-color: var(--color-border);
  color: white;
  font-size: 1.3rem;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-weight: 500;
}

.patent-title {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.patent-content {
  padding: 1.5rem;
}

.patent-info {
  margin-bottom: 1rem;
}

.patent-info-item {
  display: flex;
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
}

.patent-info-label {
  font-weight: 600;
  min-width: 100px;
}

.patent-description {
  color: var(--color-text);
  font-size: 1.75rem;
  line-height: 1.6;
  margin-bottom: 1.3rem;
}

.patent-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.patent-tag {
  background-color: var(--color-hover);
  color: var(--color-text);
  font-size: 0.8rem;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-weight: 500;
}

.patent-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--color-hover);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.patent-inventors {
  font-size: 1.5rem;
  color: var(--color-text);
}

.patent-link {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.patent-link:hover {
  color: var(--color-border);
}

.patent-link i {
  margin-left: 0.3rem;
  font-size: 1.1rem;
}

.patents-more {
  text-align: center;
  margin-top: 1rem;
  margin-bottom: 3rem;
}

.patents-more-btn {
  background-color: var(--color-primary);
  color: white;
  border: none;
  padding: 0.8rem 2rem;
  border-radius: 30px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  font-family: var(--body-font);
  font-weight: 500;
  font-size: 1rem;
}

.patents-more-btn:hover {
  background-color: var(--color-primary-switch);
}

.no-patents {
  text-align: center;
  padding: 3rem;
  color: var(--color-text);
  font-style: italic;
}

@media screen and (max-width: 768px) {
  .patents-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }

  .patents-header h1 {
    font-size: 2rem;
  }
}

@media screen and (max-width: 576px) {
  .patents-grid {
    grid-template-columns: 1fr;
  }

  .patents-header {
    padding-top: 5rem;
  }
}