/**
 * ヘッダー・ナビゲーション — 参考サイト風3ゾーンレイアウト
 */

/* ============================================================
   ヘッダー
   ============================================================ */
.l-header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--color-bg);
    transition: box-shadow var(--transition-base);
}

.l-header.is-scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.l-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    height: 60px;
}

@media (min-width: 1024px) {
    .l-header__inner {
        height: 90px;
    }
}

/* ============================================================
   Zone 1: ロゴ + タグライン
   ============================================================ */
.l-header__logo {
    flex-shrink: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

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

.l-header__logo img {
    max-height: 36px;
    max-width: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
}

@media (min-width: 1024px) {
    .l-header__logo img {
        max-height: 40px;
    }
}

.l-header__logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.l-header__tagline {
    font-size: 0.6875rem;
    color: var(--color-text-light);
    margin-top: 2px;
    white-space: nowrap;
    display: none;
}

/* ============================================================
   Zone 2: ナビゲーション
   ============================================================ */
.l-header__nav {
    display: none;
}

.l-header__nav-list {
    display: flex;
    align-items: center;
    gap: 0;
}

.l-header__nav-item {
    position: relative;
}

.l-header__nav-link {
    display: flex;
    align-items: center;
    gap: 0.25em;
    padding: 0.5rem 0.875rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    white-space: nowrap;
    transition: color var(--transition-base);
    position: relative;
}

.l-header__nav-link:hover,
.l-header__nav-link[aria-current="page"] {
    color: var(--color-primary);
}

/* ドロップダウン */
.l-header__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background-color: var(--color-bg);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-base);
    z-index: 100;
    border-top: 3px solid var(--color-primary);
}

.l-header__nav-item:hover .l-header__dropdown,
.l-header__nav-item.is-open .l-header__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.l-header__dropdown-link {
    display: block;
    padding: 0.75rem 1.25rem;
    font-size: 0.8125rem;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-base), color var(--transition-base), padding-left var(--transition-base);
    /* 単語の途中で改行させず、句読点・括弧で折り返す */
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.l-header__dropdown-link:last-child {
    border-bottom: none;
}

.l-header__dropdown-link:hover {
    background-color: var(--color-bg-blue);
    color: var(--color-primary);
    padding-left: 1.5rem;
}

/* サブメニュー項目（管更生技術配下の各工法） */
.l-header__dropdown-link--sub {
    padding-left: 2rem;
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.l-header__dropdown-link--sub:hover {
    padding-left: 2.25rem;
}

/* ============================================================
   Zone 3: 電話番号 + お問い合わせCTA
   ============================================================ */
.l-header__contact {
    display: none;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.l-header__phone {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.l-header__phone-icon {
    color: var(--color-primary);
    flex-shrink: 0;
}

.l-header__phone-info {
    display: flex;
    flex-direction: column;
}

.l-header__phone-number {
    font-family: var(--font-family-en);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: 0.02em;
    line-height: 1.2;
}

.l-header__phone-hours {
    font-size: 0.625rem;
    color: var(--color-text-light);
    line-height: 1.3;
}

.l-header__contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem 1.25rem;
    background-color: var(--color-accent-green);
    color: #fff;
    font-weight: 700;
    font-size: 0.8125rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background-color var(--transition-base), transform var(--transition-pop);
    min-width: 100px;
    text-align: center;
}

.l-header__contact-btn:hover {
    background-color: #24a85d;
    transform: translateY(-2px);
    color: #fff;
}

.l-header__contact-icon {
    flex-shrink: 0;
}

/* ============================================================
   ハンバーガーメニュー
   ============================================================ */
.l-header__menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    padding: 0;
    cursor: pointer;
}

.l-header__menu-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-base);
    position: relative;
}

.l-header__menu-toggle-bar::before,
.l-header__menu-toggle-bar::after {
    content: '';
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    position: absolute;
    left: 0;
    transition: all var(--transition-base);
}

.l-header__menu-toggle-bar::before {
    top: -7px;
}

.l-header__menu-toggle-bar::after {
    top: 7px;
}

/* ハンバーガー展開時 */
.l-header__menu-toggle[aria-expanded="true"] .l-header__menu-toggle-bar {
    background-color: transparent;
}

.l-header__menu-toggle[aria-expanded="true"] .l-header__menu-toggle-bar::before {
    top: 0;
    transform: rotate(45deg);
}

.l-header__menu-toggle[aria-expanded="true"] .l-header__menu-toggle-bar::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ============================================================
   モバイルメニュー
   ============================================================ */
.l-header__mobile-menu {
    position: fixed;
    top: var(--header-height-sp);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 999;
}

.l-header__mobile-menu.is-open {
    transform: translateX(0);
}

/* モバイル電話・お問い合わせ */
.l-header__mobile-contact {
    display: flex;
    gap: 12px;
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.l-header__mobile-phone {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    padding: 0.75rem;
    background: var(--color-bg-blue);
    border-radius: var(--radius-sm);
    font-family: var(--font-family-en);
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    text-decoration: none;
    justify-content: center;
}

.l-header__mobile-phone svg {
    color: var(--color-primary);
}

.l-header__mobile-contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: 0.75rem;
    background: var(--color-accent-green);
    color: #fff;
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
}

.l-header__mobile-nav-list {
    padding: var(--spacing-sm);
}

.l-header__mobile-nav-item {
    border-bottom: 1px solid var(--color-border);
}

.l-header__mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
    border-left: 3px solid transparent;
    transition: border-color var(--transition-base), padding-left var(--transition-base);
}

.l-header__mobile-nav-link:hover {
    border-left-color: var(--color-accent);
    padding-left: 1rem;
}

/* モバイルアコーディオン */
.l-header__mobile-dropdown {
    display: none;
    padding-left: 1rem;
    padding-bottom: 0.5rem;
}

.l-header__mobile-dropdown.is-open {
    display: block;
}

.l-header__mobile-dropdown-link {
    display: block;
    padding: 0.625rem 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-light);
    /* 単語の途中で改行させず、句読点・括弧で折り返す */
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.l-header__mobile-dropdown-link:hover {
    color: var(--color-primary);
}

/* モバイル サブメニュー項目 */
.l-header__mobile-dropdown-link--sub {
    padding-left: 1.5rem;
    font-size: 0.8125rem;
    opacity: 0.85;
}