/* ==============================================
   サイトヘッダー — グラスモーフィズム + CTA ナビ
   v2: 透明感のあるsticky header
   ============================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--content-wide);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    height: var(--header-height);
}

/* ========== ロゴ ========== */

.site-logo {
    font-size: 15px;
    font-weight: 900;
    color: var(--color-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    letter-spacing: -0.02em;
    transition: color 0.2s;
}

.site-logo:hover {
    color: var(--color-primary-dark);
    text-decoration: none;
}

/* ========== デスクトップナビ ========== */

.site-nav ul {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: var(--space-xs) 0;
    transition: color 0.2s;
    letter-spacing: 0.01em;
}

.site-nav a:hover,
.site-nav .current-menu-item > a,
.site-nav .current_page_item > a {
    color: var(--color-primary);
    text-decoration: none;
}

/* ヘッダー内CTAボタン（最後のメニュー項目 or .menu-item-cta クラス） */
.site-nav .menu-item-cta a,
.site-nav li:last-child a {
    background: var(--color-primary);
    color: #fff;
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    font-weight: 700;
    transition: background 0.2s;
}

.site-nav .menu-item-cta a:hover,
.site-nav li:last-child a:hover {
    background: var(--color-primary-dark);
    color: #fff;
}

/* ========== ハンバーガーボタン ========== */

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 24px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
    -webkit-tap-highlight-color: transparent;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
    transition: transform 0.3s, opacity 0.3s;
    transform-origin: center;
}

.hamburger.is-active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.is-active span:nth-child(2) {
    opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ========== モバイルナビ ========== */

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .site-header__inner {
        padding: 0 var(--space-lg);
    }

    .site-nav {
        display: none;
    }

    .site-nav.is-open {
        display: block;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-surface);
        padding: var(--space-lg) var(--space-md);
        overflow-y: auto;
        z-index: 99;
        animation: slideDown 0.25s ease-out;
    }

    .site-nav.is-open ul {
        flex-direction: column;
        gap: 0;
    }

    .site-nav.is-open a {
        display: block;
        padding: var(--space-md) 0;
        font-size: 16px;
        border-bottom: 1px solid var(--color-border);
    }

    .site-nav.is-open a:hover {
        border-bottom-color: var(--color-border);
    }

    /* モバイルではCTAボタンスタイルをリセット */
    .site-nav.is-open li:last-child a {
        background: none;
        color: var(--color-text-secondary);
        padding: var(--space-md) 0;
        border-radius: 0;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== パンくず ========== */

.breadcrumb {
    background: var(--color-surface-alt);
    font-size: 13px;
    color: var(--color-text-tertiary);
}

.breadcrumb__inner {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 10px var(--space-md);
}

.breadcrumb a {
    color: var(--color-accent);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb .breadcrumb_last {
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ========== モバイル固定CTA ========== */

.mobile-cta-bar {
    display: none;
}

@media (max-width: 768px) {
    .mobile-cta-bar {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: var(--color-surface);
        border-top: 1px solid var(--color-border);
        box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.08);
        padding: 8px 16px;
        padding-bottom: calc(8px + env(safe-area-inset-bottom));
        gap: 8px;
    }

    .mobile-cta-bar__btn {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        padding: 12px;
        border-radius: var(--radius-md);
        font-size: 14px;
        font-weight: 700;
        text-decoration: none;
        text-align: center;
        transition: background 0.2s;
    }

    .mobile-cta-bar__btn--phone {
        background: var(--color-primary);
        color: #fff;
    }

    .mobile-cta-bar__btn--phone:hover {
        background: var(--color-primary-dark);
        color: #fff;
        text-decoration: none;
    }

    .mobile-cta-bar__btn--form {
        background: var(--color-secondary);
        color: #fff;
    }

    .mobile-cta-bar__btn--form:hover {
        background: var(--color-secondary-dark);
        color: #fff;
        text-decoration: none;
    }
}