/* -----------------------------------------------------------------------------
 * Site header / footer / mobile menu overlay.
 * design_handoff_sakazuki_site/pages/*.dc.html の共通マークアップに準拠。
 * --------------------------------------------------------------------------- */

/* ============================================================
 * Header — 常時表示のガラスカード
 * ========================================================== */

.site-header {
    position: fixed;
    top: var(--sk-header-top);
    left: var(--sk-header-inset);
    right: var(--sk-header-inset);
    z-index: var(--sk-z-header);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 40px;
    background: var(--sk-glass-bg-light);
    backdrop-filter: var(--sk-glass-blur);
    -webkit-backdrop-filter: var(--sk-glass-blur);
    border-radius: var(--sk-radius-header);
    transition: transform 0.35s var(--sk-ease);
}

.site-header__logo {
    display: flex;
    align-items: center;
}

.site-header__logo img {
    height: 22px;
    display: block;
}

.site-header__logo:hover {
    transform: none;
    background: none;
    -webkit-text-fill-color: initial;
    color: initial;
}

.site-nav {
    display: flex;
    gap: 22px;
    font-size: 12.5px;
    font-weight: var(--sk-fw-medium);
    letter-spacing: var(--sk-tracking-wide);
}

.site-nav__link {
    padding: 4px 0;
    border-bottom: 2px solid transparent;
}

.site-nav__link:hover {
    border-bottom: 2px solid;
    border-image: linear-gradient(90deg, #17a6c9, #9a7fd6) 1;
    transform: scale(1.06);
}

/* Current page indication */
.site-nav__link[aria-current="page"] {
    border-bottom: 2px solid var(--sk-color-accent);
}

/* Hamburger — SP only */
.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0;
}

.nav-toggle__bar {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--sk-color-text);
    transition: transform 0.3s var(--sk-ease), opacity 0.2s ease;
}

.is-menu-open .nav-toggle__bar:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

.is-menu-open .nav-toggle__bar:nth-child(2) {
    transform: translateY(-4px) rotate(-45deg);
}

/* ============================================================
 * Mobile menu overlay
 * ========================================================== */

.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: var(--sk-z-menu-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 24px;
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(126, 214, 236, 0.85));
    backdrop-filter: var(--sk-glass-blur-heavy);
    -webkit-backdrop-filter: var(--sk-glass-blur-heavy);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.is-menu-open .mobile-menu {
    opacity: 1;
    visibility: visible;
}

.mobile-menu__nav {
    display: flex;
    flex-direction: column;
    gap: 20px;
    font-size: 18px;
    font-weight: var(--sk-fw-bold);
    letter-spacing: 0.14em;
    text-align: center;
}

/* body スクロール抑止 — メニュー展開中 */
body.is-menu-open {
    overflow: hidden;
}

/* ============================================================
 * Footer — 明るいラップ + ダーク角丸カード
 * ========================================================== */

.site-footer {
    position: relative;                    /* z-index を効かせるため */
    z-index: var(--sk-z-content);          /* TOPの position:fixed 背景(.top-bg z:0) の上に載せる */
    padding: 0 16px;
    background: var(--sk-color-bg-cool);
}

/* TOPページのみ footer wrap 背景色を差し替える(仕様) */
.home .site-footer {
    background: var(--sk-color-bg-mint);
}

.site-footer__wrap {
    max-width: 1408px;
    margin: 0 auto;
    padding: 60px 30px 30px;
}

.site-footer__card {
    background: var(--sk-color-dark-card);
    border-radius: 24px;
    padding: 90px 60px 40px;
    color: #fff;
}

.site-footer__grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) minmax(0, 1.2fr);
    gap: 60px;
    align-items: center;
}

.site-footer__logo {
    width: 200px;
    justify-self: center;
}

.footer-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px 40px;
    font-size: 13px;
    font-weight: var(--sk-fw-medium);
    letter-spacing: 0.12em;
    align-content: start;
}

/*
 * CONTACT カードは .sk-on-dark 内にあるが、白いカード上に黒文字を出したい。
 * .sk-on-dark a (specificity 0,0,2,1) が白文字にしてしまうため、
 * .sk-on-dark を含めた同以上の specificity で上書き。
 * base.css の a:hover(グラデ transparent) も同様に打ち消す。
 */
.sk-on-dark .footer-contact-card,
.sk-on-dark .footer-contact-card:hover {
    display: block;
    min-width: 0;
    background: var(--sk-color-contact-card);
    color: var(--sk-color-text);
    -webkit-text-fill-color: var(--sk-color-text);
    -webkit-background-clip: border-box;
    background-clip: border-box;
    border-radius: var(--sk-radius-card);
    padding: 30px 32px;
}

.sk-on-dark .footer-contact-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.28);
}

.footer-contact-card__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-contact-card__title {
    display: flex;
    align-items: baseline;
    gap: 12px;
    min-width: 0;
    flex-wrap: wrap;
}

.footer-contact-card__title strong {
    font-size: 26px;
    font-weight: var(--sk-fw-medium);
    letter-spacing: var(--sk-tracking-body);
}

.footer-contact-card__title span {
    font-size: 11px;
    font-weight: var(--sk-fw-bold);
}

.arrow-circle {
    position: relative;
    width: 40px;
    height: 40px;
    border: 1px solid var(--sk-color-text);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: none;
}

.arrow-circle--sm {
    width: 36px;
    height: 36px;
}

.arrow-circle svg {
    position: absolute;
    left: 8px;
}

.arrow-circle--sm svg {
    left: 7px;
}

.footer-contact-card__body {
    margin: 16px 0 0;
    font-size: 12.5px;
    font-weight: var(--sk-fw-bold);
    line-height: 2;
    letter-spacing: var(--sk-tracking-tight);
}

.site-footer__copy {
    margin: 70px 0 0;
    text-align: center;
    font-size: 11px;
    letter-spacing: var(--sk-tracking-body);
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================================
 * Responsive — 1024px / 767px
 * ========================================================== */

@media (max-width: 1024px) {
    .site-nav {
        gap: 18px;
        font-size: 12px;
    }
    .site-footer__grid {
        grid-template-columns: 1fr;
        gap: 44px;
        justify-items: center;
    }
    .footer-nav {
        width: 100%;
        max-width: 420px;
        text-align: center;
    }
}

@media (max-width: 767px) {
    .site-header {
        padding: 12px 18px;
        border-radius: 18px;
    }
    .site-nav {
        display: none;
    }
    .nav-toggle {
        display: flex;
    }
    .site-footer__wrap {
        padding: 40px 14px 14px;
    }
    .site-footer__card {
        padding: 60px 24px 32px;
        border-radius: 18px;
    }
    .site-footer__grid {
        gap: 40px;
    }
}