:root {

    /* color */
    --black: #0F1524;
    --blue: #0084CE;
    --blueDeep: #0071BC;
    --white: #fff;
    --lightBlue:#E5F3FA;
    --gray: #707070;
    --GrayDark:#808080;
    --grayLight: #BDBDBD;
    --gradation: linear-gradient(90deg, #0071BC 0%, #0097E0 100%);    
  

    /* font family */
    --ja-font: "noto-sans-cjk-jp", sans-serif;
    --en-font:"Roboto", sans-serif;


    /* border radius */
    --radius-s: 0.3125rem;
    --radius-r: 0.625rem;


    /* font size */
    --fontSize-pcS: 1.05rem;
    --fontSize-pcR: 1.125rem;
    --fontSize-tabR: 1rem;
    --fontSize-spR: 1rem;
    --fontSize-spS: 0.875rem;


    /* line height */
    --lineHeight-pcR: 1.875;
    --lineHeight-tabR: 1.75rem;


    /* margin */
    --sp-contentMargin: 4.37rem;
    --sec-margin-r: 4.38rem;
    --sec-margin-l: 6.25rem;
  }




/* Filter Section */
.filter-section {
    background-color: var(--white);
    border-radius: 1.25rem;
    box-shadow: 4px 4px 17px 0px rgba(0, 132, 206, 0.15);
    padding: 2.3125rem 3.1875rem;
  }
  
  .filter-container {
    display: flex;
    align-items: center;
    justify-content: space-between;

  }
  
  .filter-label {
    font-size: var(--fontSize-pcR);
    font-weight: 700;
    line-height: var(--lineHeight-pcR);
    letter-spacing: 0.09rem;
  }
  
  .filter-tabs {
    display: flex;
    gap: 2rem;
    width: 70%;
  }
  
  .filter-tab {
    max-width: 20.75rem;
    width: calc(100% / 3);
    height: 4.6875rem;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.0625rem 1.6875rem;
    background: #F7F7F7;
    color: #939FAE;
    font-size: var(--fontSize-pcR);
    font-weight: 500;
    line-height: var(--lineHeight-pcR);
    letter-spacing: 0.09rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    border-radius: var(--radius-s);
    text-align: center;

  }
  
  @media (hover: hover) and (pointer: fine) {
  .filter-tab:hover {
    background: #338DC9;
    color: var(--white);
  }
}
  
  .filter-tab.active {
    border: 0px solid #D9EDF8;
    background: #338DC9;
    color: var(--white);
    font-weight: 700;
  }
  

  /* Pagination Styles */
  .pagination-container {
    display: flex;
    justify-content: center;
    margin-top: 11rem;
  }
  
  .pagination {
    display: flex;
    align-items: center;
    gap: 2rem;
  }
  
  .next.page-numbers ,
  .prev.page-numbers {
    width: 4.375rem;
    height: 4.375rem;
    border: 1px solid var(--blue);
    background-color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 10px 0 rgba(0, 132, 206, 0.15);
  }

  .next.page-numbers {
    margin-left: 2rem;
  }

  .prev.page-numbers {
    margin-right: 2rem;
  }

.prev::after {
    content: "";
    width: 0.45rem;
    height: 0.75rem;
    background: url("../img/common/arrow-l-bl.svg") no-repeat center center;
    background-size: contain;
    transition: all 0.3s ease;
  }

  .next::after {
    content: "";
    width: 0.45rem;
    height: 0.75rem;
    background: url("../img/common/arrow-r-bl.svg") no-repeat center center;
    background-size: contain;
    transition: all 0.3s ease;
  }
  

  .next.page-numbers:hover ,
  .prev.page-numbers:hover {
    border-color: var(--blue);
    background-color: var(--blue);
  }

  .prev.page-numbers:hover::after {
    background: url("../img/common/arrow-l-w.svg") no-repeat center center;
  }

  .next.page-number:hover::after {
    background: url("../img/common/arrow-r-w.svg") no-repeat center center;
  }

  
  .pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
  }
  
  .pagination {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin: 0 var(--spacing-sm);
  }
  
  .page-numbers {
    width: 4.375rem;
    height: 4.375rem;
    border: none;
    background-color: transparent;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--gray);
    font-size: var(--fontSize-pcR);
    font-weight: 500;
    line-height: var(--lineHeight-pcR);
    letter-spacing: 0.0625rem;
    transition: all 0.3s ease;
    font-family: inherit;
  }

  .page-numbers.current {
    background-color: var(--blue);
    color: var(--white);
  }
  
  @media (hover: hover) and (pointer: fine) {
  .page-numbers:hover {
    color: var(--blue);
  }
  .page-numbers.current:hover {
    color: var(--white);
  }
}
  
  .page-numbers.active {
    background-color: var(--blue);
    font-size: 1.275rem;
    color: var(--white);
  }
  
  .pagination-ellipsis {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 1rem;
  }
  
  /* Responsive Design - PC First */

  @media (max-width: 1500px) {

    .filter-section {
        padding: 2.0125rem 3.1875rem;
      }
      
    .filter-label {
        font-size: var(--fontSize-tabR);
        line-height: var(--lineHeight-tabR);
      }

      .filter-tab {
        width: calc(100% / 3);
        height: 4.015rem;
        padding: 1.0625rem 1.6875rem;
        font-size: var(--fontSize-tabR);
        line-height: var(--lineHeight-tabR);
        height: auto;
      }

      .pagination-container {
        margin-top: 8.45rem;
      }

      .next.page-numbers ,
      .prev.page-numbers  {
        width: 3.875rem;
        height: 3.875rem;
      }
        
    .page-numbers {
        width: 3.875rem;
        height: 3.875rem;
        font-size: var(--fontSize-tabR);
        line-height: var(--lineHeight-tabR);
    }

    .page-numbers.active {
        font-size: 1.275rem;
    }

  }


  @media (max-width: 1100px) {

    .cases-section.second {
        margin-top: 4.75rem;
    }

    .cases-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: var(--spacing-md);
    }
    
    .container {
      padding: 0 var(--spacing-sm);
    }

    .filter-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        row-gap: 2rem;
        justify-content: flex-start;
    
      }

      .filter-section {
        padding: 2.0125rem 2.1875rem;
    }

      .filter-tabs {
        width: 100%;
        gap: 1.25rem;
      }

      .pagination-container {
        margin-top: 5.45rem;
      }
      

      .page-numbers {
        width: 3.075rem;
        height: 3.075rem;
      }

      .next.page-numbers ,
      .prev.page-numbers  {
        width: 3.375rem;
        height: 3.375rem;
      }



  .next.page-numbers {
    margin-left: 1.4rem;
  }

  .prev.page-numbers {
    margin-right: 1.4rem;
  }
  }
  
  @media (max-width: 768px) {
    .hero-title {
      font-size: 3rem;
    }
    
    
    .filter-container {
        gap: 1.25rem;
    }
    
    .filter-tabs {
        display: inline-flex;
        flex-wrap: wrap;
      gap: var(--spacing-xs);
      gap: 0.81rem 0.94rem;
    }
    
    .filter-tab {
        display: inline-block;
      text-align: center;
      padding: 0.5125rem 1.25rem;
      width: auto;
      height: auto;
      font-size: var(--fontSize-spS);
      line-height: 1.6; /* 185.714% */
      letter-spacing: 0.00875rem;
      height: auto;
    }
    
    .cases-grid {
      grid-template-columns: 1fr;
      gap: var(--spacing-md);
    }
    
    .cases-section {
        padding: 1.5625rem 3.125rem;
    }
    
    .pagination-container {
        margin-top: 5rem;
      }
    
    .pagination-btn,
    .page-numbers {
        width: 2.8125rem;
    height: 2.8125rem;
    font-size: var(--fontSize-spR);
    line-height: var(--lineHeight-tabR);
    }

    .next.page-numbers {
      margin-left: 4px;
    }
  
    .prev.page-numbers {
      margin-right: 4px;
    }
    
      .pagination {
      gap: 0;
      margin: 0 var(--spacing-xs);
    }

    .page-numbers.active {
        font-size: var(--fontSize-spR);
        line-height: var(--lineHeight-tabR);
    }

  }





/* ========================================
   CASE SECTION
======================================== */

.case-section {
    position: relative;
    overflow: hidden;
}

.case-header {
    text-align: center;
    margin-bottom: 50px;
}

.case-subtitle {
    font-size: 1.1rem;
    color: #999;
    margin-bottom: 30px;
    font-weight: 400;
}

/* Case Cards - Desktop Layout */
.case-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: auto;
    gap: 5.73vw 5.85vw;
}

.case-card {
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.case-image {
    position: relative;
    border-radius: var(--radius-r);
    overflow: hidden;
    height: 18.75rem;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-card:hover .case-image img {
    transform: scale(1.05);
}

.case-card:hover .case-title {
  color: var(--blue);
}

.case-content {
    padding: 1.56rem 0;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-tags {
    display: flex;
    gap: .64rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.case-tag {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
}

.case-tag {
    background: var(--blueDeep);
    opacity: 0.8;
    color: var(--white);
    border-radius: var(--radius-s);
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 .95rem;

    font-size: 0.9rem;
    font-style: normal;
    font-weight: 500;
    line-height: 1.875rem; /* 187.5% */
    letter-spacing: 0.09rem;
}



.case-title {
    font-size: var(--fontSize-pcR);
    font-style: normal;
    font-weight: 700;
    line-height: 1.875; /* 181.818% */
    letter-spacing: 0.09rem;
    color: var(--black);
    padding-bottom: 1.56rem;
    border-bottom: 1px solid var(--grayLight);
    margin-bottom: 1.56rem;
    flex: 1;
    transition: all 0.3s ease;
}

.case-company {
    font-size: var(--fontSize-pcS);
    font-style: normal;
    font-weight: 400;
    line-height: 1.875rem; /* 166.667% */
    letter-spacing: 0.09rem;
    color: var(--black);
    margin-top: 0;
    padding-right: 0.5rem;
}

.case-indstory {
  font-size: var(--fontSize-pcS);
  font-style: normal;
  font-weight: 400;
  line-height: 1.875rem; /* 166.667% */
  letter-spacing: 0.09rem;
  color: var(--black);
  padding-left: 0.5rem;
}

/* Case Section - Mobile Only */
.case-section-mobile {
    display: none;
}

.case-carousel-container {
    position: relative;
    margin-bottom: 60px;
}

/* Custom Pagination for Mobile */
.case-pagination {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 3.12rem;
}

.case-pagination-dot {
    width: 0.625rem;
    height: 0.625rem;
    border-radius: 50%;
    background: #E6F3FB;
    cursor: pointer;
    transition: all 0.3s ease;
}

.case-pagination-dot.active {
    background: var(--blue);
    /* transform: scale(1.2); */
}

@media (hover: hover) and (pointer: fine) {
.case-pagination-dot:hover {
    background: var(--blue);
}
}


.case-info {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
}

/* Case Responsive */
@media screen and (max-width: 1500px) {

    .case-title {
        font-size: 1.25rem;
        line-height: 2.1rem; 
     } 


.case-image {
    height: 14.75rem;
}
.case-cards {
  gap: 5.73vw 6.85vw;
}

}
@media screen and (max-width: 1100px) {
    .case-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .top-section.case-page .case-header {
      margin-bottom: 30px;
    }

    .case-header {
      margin-bottom: 30px;
    }

}

@media screen and (max-width: 768px) {
    .case-section {
        padding: 0 1.88rem;
        padding-top: var(--sp-contentMargin);
    }
    .case-header {
        margin-bottom: 2.56rem;
    }
    .top-section.case-page .case-header {
      margin-bottom: 0;
    }
    .case-section-desktop {
      display: none;
    }
    /* Hide desktop version, show mobile version */

    .case-section-mobile {
        display: block;
        margin-bottom: 6.25rem;
    }

    .case-cards {
        grid-template-columns: 1fr;
        gap: 5rem;
    }
    .case-card {
        margin: 0 10px;
    }

    
.case-image {
    height: 15.5rem;
}

    .case-content {
        padding: 1.25rem 0 0;
    }

    .case-title {
        font-size: var(--fontSize-spR);
        line-height: 1.75rem;
        margin-bottom: 1rem;
        padding-bottom: 0.95rem;
    }
    .case-tags {
        margin-bottom: 1rem;
    }

    .case-tag {
        padding: 0.025rem 0.975rem 0.125rem;
        height: 1.875rem;
        font-size: 0.8125rem;
        line-height: 1.375rem; /* 169.231% */
        letter-spacing: 0.09rem;
    }

    .case-company {
        font-size: var(--fontSize-pcS);
        line-height: 1.625rem; /* 185.714% */
        letter-spacing: 0.00875rem;

    }
    
}



/* -----------------

第二階層の事例ページレイアウト

--------------------*/

.cases-section.second {
    margin-top: 9.7rem;
}


@media (max-width: 1500px) {

    .cases-section.second {
        margin-top: 6.85rem;
    }
}

@media (max-width: 768px) {


    .cases-section.second {
        margin-top: 5rem;
        padding: 0;
    }
}