/* ==========================================================================
   LAYOUT.CSS - ヘッダー、フッター、レイアウト関連のスタイル
   ========================================================================== */

/* ==========================================================================
   1. HEADER
   ========================================================================== */
.header { 
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%; 
    z-index: 1000; 
    padding: 20px 0; 
    transition: all 0.6s ease; 
}

.header.scrolled { 
    background: rgba(255, 255, 255, 0.9); 
    backdrop-filter: blur(20px); 
    padding: 12px 0; 
    border-bottom: 1px solid var(--color-border); 
    box-shadow: 0 4px 30px rgba(0,0,0,0.02);
}

.header__inner { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
}

.logo { 
    display: flex; 
    flex-direction: column; 
    z-index: 1001; 
}

.logo__main { 
    font-size: 24px; 
    font-weight: 700; 
    font-family: var(--font-serif); 
    letter-spacing: -0.02em; 
    line-height: 1.1; 
}

.logo__sub { 
    font-size: 9px; 
    letter-spacing: 0.3em; 
    text-transform: uppercase; 
    color: var(--color-accent); 
    font-weight: 700; 
    margin-top: 2px; 
}

.gnav__list { 
    display: flex; 
    gap: 40px; 
    align-items: center; 
}

.gnav__link { 
    font-size: 11px; 
    font-weight: 700; 
    letter-spacing: 0.1em; 
    color: var(--color-text-muted); 
    position: relative; 
}

.gnav__link::after {
    content: ""; 
    position: absolute; 
    bottom: -4px; 
    left: 0; 
    width: 0; 
    height: 1px;
    background: var(--color-accent); 
    transition: width 0.3s ease;
}

.gnav__link:hover { 
    color: var(--color-primary); 
}

.gnav__link:hover::after { 
    width: 100%; 
}

/* モバイルメニューボタン（ハンバーガーメニュー） */
.menu-toggle { 
    display: none; 
    width: 32px; 
    height: 32px; 
    flex-direction: column; 
    justify-content: center; 
    gap: 6px;
    z-index: 1001; 
    cursor: pointer; 
}

.menu-toggle span { 
    width: 100%; 
    height: 1.5px; 
    background: var(--color-primary); 
    transition: 0.4s; 
    transform-origin: center; 
}

/* ==========================================================================
   2. FOOTER
   ========================================================================== */
.footer { 
    padding: 120px 0 60px; 
    border-top: 1px solid var(--color-border); 
    background: var(--color-white); 
}

.footer__grid { 
    display: grid; 
    grid-template-columns: 2fr 1fr 1fr 1.5fr; 
    gap: 60px; 
    margin-bottom: 80px; 
}

.footer__title { 
    font-size: 28px; 
    font-family: var(--font-serif); 
    margin-bottom: 32px; 
    color: var(--color-primary); 
    font-weight: 700; 
}

.footer__label { 
    font-size: 10px; 
    font-weight: 700; 
    letter-spacing: 0.4em; 
    color: var(--color-text-muted); 
    text-transform: uppercase; 
    margin-bottom: 32px; 
    display: block; 
    border-bottom: 1px solid var(--color-border); 
    padding-bottom: 8px; 
}

.footer__links li { 
    margin-bottom: 16px; 
}

.footer__link { 
    font-size: 13px; 
    font-weight: 700; 
    color: var(--color-text-muted); 
    transition: color 0.3s ease; 
}

.footer__link:hover { 
    color: var(--color-accent); 
}

.footer__bottom {
    padding-top: 40px; 
    border-top: 1px solid var(--color-border);
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    font-size: 10px; 
    letter-spacing: 0.2em; 
    color: var(--color-text-muted); 
    text-transform: uppercase;
}

/* ==========================================================================
   3. PAGE HEADER（各ページのヘッダーセクション）
   ========================================================================== */
.page-header { 
    position: relative; 
    padding: 220px 0 100px; 
    overflow: hidden; 
    background: var(--color-white); 
}

.page-header__bg-text { 
    position: absolute; 
    right: -5%; 
    top: 20%; 
    font-size: 40vh; 
    font-family: var(--font-serif); 
    font-weight: 700; 
    opacity: 0.02; 
    transform: rotate(90deg); 
    pointer-events: none; 
}

/* ==========================================================================
   4. RESPONSIVE - モバイル対応
   ========================================================================== */
@media (max-width: 1024px) {
    .footer__grid { 
        grid-template-columns: 1fr 1fr; 
        gap: 60px; 
    }
}

@media (max-width: 768px) {
    .header { 
        padding: 12px 0; 
    }
    
    /* モバイルメニューのスタイル */
    .gnav {
        position: fixed; 
        top: 0; 
        right: -100%; 
        width: 80%; 
        height: 100vh;
        background: var(--color-white); 
        z-index: 1000; 
        padding: 100px 40px;
        transition: 0.5s ease; 
        box-shadow: -10px 0 30px rgba(0,0,0,0.05);
    }
    
    .gnav.active { 
        right: 0; 
    }
    
    .gnav__list { 
        flex-direction: column; 
        align-items: flex-start; 
        gap: 32px; 
    }
    
    .gnav__link { 
        font-size: 18px; 
        color: var(--color-primary); 
    }
    
    /* モバイルメニュー内の問い合わせボタンを大きくする */
    .gnav .btn.btn--primary {
        padding: 16px 32px;
        font-size: 14px;
        width: 100%;
        max-width: 280px;
        text-align: center;
        margin-top: 8px;
    }
    
    .menu-toggle { 
        display: flex; 
    }
    
    /* ハンバーガーメニューのアニメーション */
    .menu-toggle.active span:nth-child(1) { 
        transform: rotate(45deg) translateY(6px); 
    }
    
    .menu-toggle.active span:nth-child(2) { 
        opacity: 0; 
    }
    
    .menu-toggle.active span:nth-child(3) { 
        transform: rotate(-45deg) translateY(-6px); 
    }
    
    .page-header { 
        padding: 160px 0 60px; 
    }
    
    .footer__grid { 
        grid-template-columns: 1fr; 
        gap: 48px; 
    }
    
    .footer__bottom { 
        flex-direction: column; 
        gap: 20px; 
        text-align: center; 
    }
}