/* =========================================
   일본어 부수 페이지
   KOJARIA Radical Page
   ========================================= */

.radical-page {
    width: min(1100px, calc(100% - 32px));
    margin: 100px auto 80px;
    color: #333;
    font-family:
        "Noto Sans JP",
        "Noto Sans KR",
        "Nanum Gothic",
        sans-serif;
}


/* =========================================
   페이지 제목
   ========================================= */

.radical-intro {
    display: flex;
    align-items: center;
    gap: 20px;

    padding: 28px 32px;
    margin-bottom: 20px;

    background: linear-gradient(135deg, #fff3f4, #fff8ed);
    border: 1px solid #f3d5d8;
    border-radius: 22px;
}

.radical-title-icon {
    width: 72px;
    height: 72px;

    display: flex;
    align-items: center;
    justify-content: center;

    flex-shrink: 0;

    background: #e86c78;
    color: white;

    border-radius: 18px;

    font-size: 40px;
    font-weight: 800;
}

.radical-title-text h1 {
    margin: 0;

    font-size: 34px;
    font-weight: 800;

    color: #333;
}

.radical-title-text p {
    margin: 7px 0 0;

    color: #e66b75;
    font-size: 17px;
    font-weight: 700;
}


/* =========================================
   부수 설명
   ========================================= */

.radical-description {
    margin-bottom: 30px;
    padding: 26px 30px;

    background: #fff;

    border: 1px solid #e8e8e8;
    border-radius: 18px;

    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.radical-description h2 {
    margin: 0 0 12px;

    font-size: 22px;
    color: #d95d68;
}

.radical-description p {
    margin: 7px 0;

    line-height: 1.8;
    font-size: 15px;
    color: #555;
}


/* =========================================
   부수 카드 그리드
   ========================================= */

.radical-grid {
    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: 18px;
}


/* =========================================
   카드 기본
   ========================================= */

.radical-card {
    position: relative;

    overflow: hidden;

    background: #fff;

    border: 1px solid #e4e4e4;
    border-radius: 18px;

    box-shadow: 0 5px 18px rgba(0, 0, 0, 0.06);

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.radical-card:hover {
    transform: translateY(-4px);

    box-shadow:
        0 10px 25px rgba(0, 0, 0, 0.10);
}


/* =========================================
   카드 상단
   ========================================= */

.radical-card-top {
    display: flex;
    align-items: center;

    min-height: 125px;

    padding: 20px;

    background: #fff7f7;

    border-bottom: 1px solid #eee;
}

.radical-kanji {
    width: 90px;
    height: 90px;

    display: flex;
    align-items: center;
    justify-content: center;

    flex-shrink: 0;

    background: white;

    border-radius: 18px;

    font-family:
        "Noto Serif JP",
        "Yu Mincho",
        serif;

    font-size: 62px;
    font-weight: 700;

    color: #222;

    box-shadow:
        0 3px 10px rgba(0, 0, 0, 0.08);
}

.radical-name {
    display: flex;
    flex-direction: column;

    margin-left: 18px;
}

.radical-jp {
    font-size: 23px;
    font-weight: 800;

    color: #d65d69;
}

.radical-ko {
    margin-top: 5px;

    font-size: 14px;
    font-weight: 600;

    color: #777;
}


/* =========================================
   부수 의미
   ========================================= */

.radical-meaning {
    min-height: 72px;

    display: flex;
    align-items: center;

    padding: 15px 20px;

    background: #fafafa;

    font-size: 14px;
    line-height: 1.65;

    color: #555;
}


/* =========================================
   예시 단어
   ========================================= */

.radical-examples {
    display: grid;

    grid-template-columns: repeat(2, 1fr);

    border-top: 1px solid #eee;
}

.example-item {
    flex-direction: column;
    justify-content: center;
    padding: 9px 12px;
    background: #fff;
    border-right: 1px solid #eee;
    font-size: 20px;
    font-weight: 700;
    text-align: center;
}

.example-item:nth-child(even) {
    border-right: none;
}

.example-item:hover {
    background: #fff6f7;
}

.example-item span {
    display: block;
    margin-top: 3px;
    font-size: 12px;
    font-weight: 500;
    color: #777;
}

.example-item ruby {
    ruby-position: over;
}

.example-item rt {
    font-size: 10px;
    font-weight: 500;
    color: #e06470;
}


/* =========================================
   색상별 카드
   ========================================= */

.radical-blue .radical-card-top {
    background: #edf8ff;
}

.radical-orange .radical-card-top {
    background: #fff3e8;
}

.radical-blue2 .radical-card-top {
    background: #eef5ff;
}

.radical-pink .radical-card-top {
    background: #fff0f5;
}

.radical-green .radical-card-top {
    background: #eef9ef;
}

.radical-purple .radical-card-top {
    background: #f5efff;
}

.radical-red .radical-card-top {
    background: #fff0f0;
}

.radical-brown .radical-card-top {
    background: #fff6eb;
}

.radical-yellow .radical-card-top {
    background: #fffbea;
}


/* =========================================
   공부 TIP
   ========================================= */

.radical-tip {
    display: flex;
    align-items: flex-start;

    gap: 18px;

    margin-top: 30px;
    padding: 25px 28px;

    background: linear-gradient(
        135deg,
        #fff8e8,
        #fff4f5
    );

    border: 1px solid #f0dfcf;
    border-radius: 18px;
}

.tip-icon {
    width: 42px;
    height: 42px;

    display: flex;
    align-items: center;
    justify-content: center;

    flex-shrink: 0;

    border-radius: 50%;

    background: #e66d77;
    color: white;

    font-size: 22px;
    font-weight: 800;
}

.radical-tip h2 {
    margin: 0 0 10px;

    font-size: 20px;
    color: #d45c68;
}

.radical-tip p {
    margin: 5px 0;

    font-size: 14px;
    line-height: 1.75;

    color: #555;
}


/* =========================================
   태블릿
   ========================================= */

@media (max-width: 900px) {

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

}


/* =========================================
   모바일
   ========================================= */

@media (max-width: 600px) {

    .radical-page {
        width: calc(100% - 20px);

        margin-top: 25px;
    }


    .radical-intro {
        padding: 20px;

        gap: 14px;

        border-radius: 17px;
    }


    .radical-title-icon {
        width: 55px;
        height: 55px;

        border-radius: 13px;

        font-size: 31px;
    }


    .radical-title-text h1 {
        font-size: 25px;
    }


    .radical-title-text p {
        font-size: 13px;
    }


    .radical-description {
        padding: 20px;

        border-radius: 15px;
    }


    .radical-description h2 {
        font-size: 19px;
    }


    .radical-description p {
        font-size: 14px;
    }


    .radical-grid {
        grid-template-columns: 1fr;

        gap: 14px;
    }


    .radical-card-top {
        min-height: 105px;

        padding: 15px;
    }


    .radical-kanji {
        width: 72px;
        height: 72px;

        border-radius: 14px;

        font-size: 50px;
    }


    .radical-name {
        margin-left: 14px;
    }


    .radical-jp {
        font-size: 20px;
    }


    .radical-ko {
        font-size: 13px;
    }


    .radical-meaning {
        min-height: auto;

        padding: 13px 16px;

        font-size: 13px;
    }


    .example-item {
        min-height: 65px;

        font-size: 19px;
    }


    .radical-tip {
        padding: 20px;

        gap: 12px;
    }


    .tip-icon {
        width: 36px;
        height: 36px;

        font-size: 18px;
    }


    .radical-tip h2 {
        font-size: 17px;
    }


    .radical-tip p {
        font-size: 13px;
    }

}


/* =========================================
   부수 분류 메뉴
   ========================================= */

.radical-category-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;

    margin-bottom: 35px;
    padding: 15px;

    background: #fff;
    border: 1px solid #e8e8e8;
    border-radius: 16px;

    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.radical-category-nav a {
    min-width: 95px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    padding: 10px 16px;

    background: #fff5f6;
    color: #555;

    border: 1px solid #f0d5d8;
    border-radius: 12px;

    text-decoration: none;

    transition:
        background 0.2s ease,
        color 0.2s ease,
        transform 0.2s ease;
}

.radical-category-nav a:hover {
    background: #e86c78;
    color: #fff;

    transform: translateY(-2px);
}

.category-jp {
    font-size: 17px;
    font-weight: 800;
}

.category-ko {
    margin-top: 2px;

    font-size: 11px;
    opacity: 0.75;
}


/* =========================================
   분류 영역
   ========================================= */

.radical-category {
    scroll-margin-top: 90px;

    margin-bottom: 50px;
}


/* =========================================
   분류 제목
   ========================================= */

.category-title {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;

    gap: 10px;

    margin-bottom: 18px;
    padding-bottom: 10px;

    border-bottom: 3px solid #f0dadd;
}

.category-title-jp {
    font-size: 28px;
    font-weight: 800;

    color: #d95d68;
}

.category-title-ko {
    font-size: 15px;
    font-weight: 700;

    color: #777;
}

.category-title p {
    width: 100%;

    margin: 0;

    font-size: 13px;
    color: #888;
}


/* =========================================
   카드 링크
   ========================================= */

.radical-card-link {
    display: block;

    color: inherit;
    text-decoration: none;
}

.radical-card-link:hover {
    color: inherit;
}


/* 카드가 링크 안에 들어가므로
   기존 article 스타일 유지 */
.radical-card-link .radical-card {
    height: 100%;
}


/* =========================================
   모바일
   ========================================= */

@media (max-width: 600px) {

    .radical-category-nav {
        gap: 7px;
        padding: 10px;
    }

    .radical-category-nav a {
        min-width: calc(25% - 6px);

        padding: 9px 5px;
    }

    .category-jp {
        font-size: 15px;
    }

    .category-title-jp {
        font-size: 24px;
    }

}


/* =========================================
   맨 위로 이동 버튼
   ========================================= */

#radicalTopBtn {
    position: fixed;
    right: 25px;
    bottom: 25px;

    width: 52px;
    height: 52px;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 0;

    border: none;
    border-radius: 50%;

    background: #e86c78;
    color: #ffffff;

    font-size: 26px;
    font-weight: bold;
    line-height: 1;

    cursor: pointer;

    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);

    /* 처음에는 숨김 */
    opacity: 0;
    visibility: hidden;

    transform: translateY(15px);

    transition:
        opacity 0.25s ease,
        visibility 0.25s ease,
        transform 0.25s ease,
        background 0.2s ease;

    z-index: 9999;
}


/* 스크롤하면 표시 */
#radicalTopBtn.show {
    opacity: 1;
    visibility: visible;

    transform: translateY(0);
}


/* 마우스를 올렸을 때 */
#radicalTopBtn:hover {
    background: #d65361;
}


/* 클릭할 때 */
#radicalTopBtn:active {
    transform: scale(0.92);
}


/* =========================================
   모바일
   ========================================= */

@media (max-width: 600px) {

    #radicalTopBtn {
        right: 15px;
        bottom: 15px;

        width: 45px;
        height: 45px;

        font-size: 22px;
    }

}