/* ===================================================
   component.css — 全サイト共通UIパーツ（Figma準拠）
   =================================================== */

/* グラデーションを transition でスムーズに補間するためのカスタムプロパティ */
@property --hover-grad-1 {
    syntax: '<color>';
    inherits: false;
    initial-value: rgba(12, 86, 160, 0.6);
}
@property --hover-grad-2 {
    syntax: '<color>';
    inherits: false;
    initial-value: rgba(12, 86, 160, 0.6);
}

/* ----- c-conversion（CVボタン・グラデーション版） ----- */
.c-conversion {
    box-sizing: border-box;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    background: var(--gradient-cta);
    color: var(--color-white);
    font-size: var(--fz-base);
    font-weight: 700;
    padding: 4px 22px;
    height: 72px;
    border-radius: var(--radius-sm);
    min-width: 250px;
    text-align: center;
}
.c-conversion > * {
    position: relative;
    z-index: 1;
}
.c-conversion::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--gradient-cta-hover);
    border-radius: inherit;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}
.c-conversion:hover {
    opacity: 1;
}
.c-conversion:hover::before {
    opacity: 1;
}

/* ----- c-btn（標準ボタン・白背景版） ----- */
.c-btn {
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--color-bg-btn);
    border: 1px solid var(--color-border-blue);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-btn);
    padding: 16px 36px;
    min-width: 280px;
    max-width: 320px;
    font-family: var(--font-base);
    font-size: var(--fz-base);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.8;
    transition:
        background-color var(--transition-base),
        color var(--transition-base);
    text-decoration: none;
}
.c-btn:hover {
    opacity: 1;
    background-color: var(--color-primary);
    color: var(--color-white);
}
.c-btn::after {
    content: "";
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: url('../images/icons/icon_arrow_right.svg') no-repeat center / contain;
    transition: filter var(--transition-base);
}
.c-btn:hover::after {
    filter: brightness(0) invert(1);
}

/* ----- レスポンシブ ----- */
@media screen and (max-width: 1024px) {
    .c-conversion {
        height: 60px;
        min-width: 220px;
    }
    .c-btn {
        padding: 14px 28px;
    }
}

@media screen and (max-width: 600px) {
    .c-conversion {
        width: 100%;
        max-width: 320px;
    }
    .c-btn {
        width: 100%;
        max-width: 280px;
    }
}

/* ----- 外部リンクアイコン（li.blank の中の a / a.blank 直接の両方に対応） ----- */
.blank a::after,
a.blank::after {
    content: "";
    display: inline-block;
    width: 12px;
    height: 12px;
    margin-left: 4px;
    background: url('../images/icons/icon_external.svg') no-repeat center / contain;
    vertical-align: middle;
}
/* バナー画像のみのリンクには外部アイコンを付けない */
.l-footer__info-right a.blank::after {
    display: none;
}

/* =============================================
   c-related — 関連情報セクション（共通）
   各ページ末尾に配置するアーチ背景＋2カラム関連リンク
   背景画像は HTML 側 style="background-image:url(...)" で個別指定
   ============================================= */
.c-related {
    position: relative;
    max-width: var(--content-narrow);
    margin: var(--space-5xl) auto 0;
    padding: var(--space-5xl) 0;
    color: var(--color-text);
}
.c-related::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100vw;
    height: calc(100vw * 448 / 1440);
    background: url('../images/bg/arc-bg.svg') top center / 100% 100% no-repeat;
    pointer-events: none;
    z-index: -1;
}
.c-related > h2 {
    margin: 0 0 var(--space-2xl);
    font-family: var(--font-heading);
    font-size: var(--fz-3xl);
    font-weight: 400;
    line-height: 1.5;
    text-align: center;
}
.c-related__list {
    display: flex;
    gap: var(--space-2xl);
}
.c-related__list > a {
    position: relative;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 148px;
    padding: 0 16px;
    width: 100%;
    overflow: hidden;
    text-decoration: none;
    color: var(--color-white);
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    transition: opacity var(--transition-base);
}
.c-related__list > a:hover {
    opacity: 1;
}
.c-related__list > a::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--hover-grad-1) 35%, var(--hover-grad-2) 100%);
    pointer-events: none;
    transition: --hover-grad-1 var(--transition-base), --hover-grad-2 var(--transition-base);
}
.c-related__list > a:hover::before {
    --hover-grad-1: rgba(0, 175, 236, 0.8);
    --hover-grad-2: rgba(12, 86, 160, 0.8);
}
.c-related__list > a::after {
    content: "";
    position: absolute;
    top: 50%;
    right: 12px;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    background: url('../images/icons/icon_arrow_right.svg') no-repeat center / contain;
    filter: brightness(0) invert(1);
    z-index: 1;
}
.c-related__list > a > p {
    position: relative;
    z-index: 1;
    margin: 0;
    font-family: var(--font-base);
    font-size: var(--fz-lg);
    font-weight: 700;
    line-height: 1.8;
    text-align: center;
}
/* ----- 画像バナー型（<a><img>）：テキスト・矢印・トーンが画像に焼き込み済み ----- */
.c-related__list > a:has(img) {
    height: auto;
    padding: 0;
}
.c-related__list > a:has(img) > img {
    display: block;
    width: 100%;
    height: auto;
}
/* 静止時はオーバーレイ透明（画像そのまま）、ホバーで青を表示 */
.c-related__list > a:has(img)::before {
    --hover-grad-1: rgba(0, 175, 236, 0);
    --hover-grad-2: rgba(12, 86, 160, 0);
}
/* 矢印は画像に焼き込み済みのため非表示 */
.c-related__list > a:has(img)::after {
    display: none;
}

@media screen and (max-width: 1024px) {
    .c-related {
        margin-top: var(--space-4xl);
        padding: var(--space-4xl) var(--space-md);
    }
    .c-related__list {
        gap: var(--space-lg);
    }
    .c-related__list > a {
        height: 140px;
    }
}
@media screen and (max-width: 600px) {
    .c-related {
        margin-top: var(--space-3xl);
        padding: var(--space-3xl) var(--space-md);
    }
    .c-related > h2 {
        margin-bottom: var(--space-xl);
        font-size: var(--fz-2xl);
    }
    .c-related__list {
        flex-direction: column;
        gap: var(--space-md);
    }
    .c-related__list > a {
        height: 100px;
    }
    .c-related__list > a > p {
        font-size: var(--fz-base);
    }
}

/* ---------------------------------------------------
   c-modal — サイト共通モーダル（基底）
   --------------------------------------------------- */
.c-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    background: var(--color-overlay);
    opacity: 0;
    transition: opacity 0.25s ease;
}
.c-modal[hidden] {
    display: none;
}
.c-modal.is-open {
    opacity: 1;
}
.c-modal__close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 48px;
    height: 48px;
    background: var(--color-white);
    border: none;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    color: var(--color-text-dark);
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    transition: transform var(--transition-base);
}
.c-modal__close:hover {
    transform: scale(1.05);
}
.c-modal__content {
    max-width: min(90vw, 1280px);
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0.96);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
}
.c-modal.is-open .c-modal__content {
    transform: scale(1);
    opacity: 1;
}
.c-modal__content > img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    display: block;
}
.c-modal__content > iframe {
    width: min(90vw, 1280px);
    aspect-ratio: 16 / 9;
    border: none;
    background: #000;
}