/* ================================================
   components.css — ヘッダー・フッター・共通コンポーネント
   ================================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.84);
    border-bottom: 1px solid rgba(38, 88, 131, 0.12);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    z-index: 1000;
    transition: background var(--transition-fast), box-shadow var(--transition-base), border-color var(--transition-fast);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.96);
    border-bottom-color: rgba(38, 88, 131, 0.18);
    box-shadow: 0 8px 24px rgba(27, 66, 103, 0.12);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
}

.header__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    z-index: 1001;
}

.header__logo-img {
    width: auto;
    height: 44px;
}

.header__logo-text {
    font-family: var(--font-heading);
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.25;
}

.header__logo-sub {
    display: block;
    font-size: 0.62rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: var(--text-sub);
}

.header__nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.header__nav-group {
    position: relative;
}

.header__nav-link {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-bottom: 2px;
    text-decoration: none;
}

.header__nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -10px;
    width: 0;
    height: 2px;
    transform: translateX(-50%);
    background: var(--sunset-orange);
    border-radius: 999px;
    transition: width var(--transition-base);
}

.header__nav-link:hover::after,
.header__nav-link.active::after {
    width: 76%;
}

.header__nav-group:hover .header__nav-link::after,
.header__nav-group:focus-within .header__nav-link::after {
    width: 76%;
}

.header__nav-ja {
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-dark);
    transition: color var(--transition-fast);
}

.header__nav-en {
    font-size: 0.58rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-sub);
}

.header__nav-link:hover .header__nav-ja,
.header__nav-link.active .header__nav-ja {
    color: var(--sunset-orange-dark);
}

.header__nav-group:hover .header__nav-ja,
.header__nav-group:focus-within .header__nav-ja {
    color: var(--sunset-orange-dark);
}

.header__submenu {
    position: absolute;
    top: 100%;
    left: 50%;
    min-width: 188px;
    padding: 14px 8px 10px;
    border-radius: 14px;
    border: 1px solid rgba(31, 86, 124, 0.16);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 16px 34px rgba(27, 66, 103, 0.14);
    transform: translateX(-50%) translateY(8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

/* ホバーの隠れブリッジ：ナビリンクとサブメニューの隔間を埋める */
.header__nav-group::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 20px;
    background: transparent;
}

.header__nav-group:hover .header__submenu,
.header__nav-group:focus-within .header__submenu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.header__submenu-link {
    display: block;
    padding: 8px 10px;
    border-radius: 10px;
    color: var(--text-dark);
    font-size: 0.84rem;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}

.header__submenu-link:hover,
.header__submenu-link.active {
    color: var(--river-blue-dark);
    background: rgba(42, 115, 169, 0.1);
}

.header__contact {
    padding: 10px 22px;
    border-radius: var(--radius-pill);
    font-family: var(--font-heading);
    font-size: 0.86rem;
    font-weight: 700;
    color: var(--text-white) !important;
    background: linear-gradient(120deg, var(--sunset-orange), #eb944c);
    box-shadow: 0 8px 20px rgba(224, 126, 52, 0.28);
    transition: transform var(--transition-fast), box-shadow var(--transition-base), background var(--transition-fast);
}

.header__contact:hover {
    color: var(--text-white) !important;
    background: linear-gradient(120deg, var(--sunset-orange-dark), #d8782e);
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(208, 112, 39, 0.34);
}

.hamburger {
    display: none;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid rgba(36, 83, 122, 0.16);
    background: rgba(255, 255, 255, 0.92);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.hamburger__line {
    display: block;
    width: 19px;
    height: 2px;
    border-radius: 2px;
    background: var(--text-dark);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.active {
    background: rgba(255, 255, 255, 0.98);
    border-color: rgba(36, 83, 122, 0.24);
}

.hamburger.active .hamburger__line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active .hamburger__line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100vh;
    padding: 110px 24px 48px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 22px;
    background: linear-gradient(155deg, rgba(232, 130, 58, 0.97) 0%, rgba(43, 124, 179, 0.95) 100%);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: auto;
}

.mobile-menu__link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    color: var(--text-white);
    text-decoration: none;
}

.mobile-menu__ja {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-white);
}

.mobile-menu__en {
    font-size: 0.66rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.82);
}

.mobile-menu__link.active .mobile-menu__ja {
    text-decoration: underline;
    text-underline-offset: 8px;
}

.mobile-menu__sublink {
    margin-top: -10px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.88rem;
    font-weight: 500;
    text-decoration: none;
}

.mobile-menu__sublink.active {
    text-decoration: underline;
    text-underline-offset: 6px;
}

.footer {
    position: relative;
    background: var(--bg-white);
    border-top: 1px solid var(--border-light);
    margin-top: 18px;
}

.footer__inner {
    max-width: var(--container-width);
    margin: 0 auto;
}

.footer__nav-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 26px;
    padding: 36px 24px 26px;
    border-bottom: 1px solid var(--border-light);
}

.footer__nav-link {
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-decoration: none;
}

.footer__nav-link:hover {
    opacity: 0.78;
}

.footer__nav-link--orange {
    color: var(--sunset-orange-dark);
}

.footer__categories {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0;
    padding: 38px 24px;
}

.footer__col {
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding: 0 24px;
}

.footer__col:not(:last-child) {
    border-right: 1px solid var(--border-light);
}

.footer__col--right {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 20px;
    padding-top: 8px;
}

.footer__contact-btn {
    display: inline-block;
    padding: 18px 48px;
    border-radius: var(--radius-pill);
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white) !important;
    background: linear-gradient(135deg, #7ec8e3 0%, #72bcd4 100%);
    box-shadow: 0 8px 24px rgba(114, 188, 212, 0.35);
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.footer__contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(114, 188, 212, 0.45);
}

.footer__ext-link {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-dark);
    text-decoration: none;
}

.footer__ext-link::after {
    content: ' ↗';
    font-size: 0.78rem;
}

.footer__ext-link:hover {
    color: var(--river-blue-dark);
}

.footer__category {
    padding: 0;
}

.footer__cat-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.footer__cat-title--green {
    color: var(--forest-green-dark);
}

.footer__cat-title--blue {
    color: var(--river-blue-dark);
}

.footer__cat-title--orange {
    color: var(--sunset-orange-dark);
}

.footer__cat-en {
    margin-bottom: 10px;
    font-size: 0.64rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: var(--text-sub);
}

.footer__cat-links {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.footer__cat-link {
    font-size: 0.82rem;
    color: var(--text-sub);
    text-decoration: none;
}

.footer__cat-link:hover {
    color: var(--sunset-orange-dark);
}

.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding: 28px 24px;
    margin-top: 10px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    background: linear-gradient(140deg, #e8f2fa 0%, #ecf5f0 100%);
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer__logo-img {
    height: 56px;
}

.footer__links-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 22px;
}

.footer__bottom-link {
    font-size: 0.82rem;
    color: var(--text-sub);
    text-decoration: none;
}

.footer__bottom-link:hover {
    color: var(--river-blue-dark);
}

.footer__copyright {
    width: 100%;
    text-align: center;
    margin-top: 6px;
    font-size: 0.74rem;
    color: var(--text-sub);
}

/* クリッカブルカード */
.program-card--clickable {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    cursor: pointer;
}

.program-card--clickable:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(27, 66, 103, 0.14);
}

/* 404ページ */
.error-404 {
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.error-404__content {
    text-align: center;
    max-width: 560px;
    margin: 0 auto;
}

.error-404__code {
    font-family: var(--font-heading);
    font-size: 6rem;
    font-weight: 700;
    color: var(--sunset-orange);
    line-height: 1;
    margin-bottom: 8px;
}

.error-404__title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.error-404__text {
    color: var(--text-sub);
    margin-bottom: 32px;
    line-height: 1.8;
}

.error-404__actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* プライバシーポリシー */
.privacy-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.9;
    color: var(--text-dark);
}

.privacy-content h2 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    margin: 32px 0 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-light);
}

.privacy-content p {
    margin-bottom: 12px;
    font-size: 0.92rem;
}

.privacy-content ul {
    margin: 8px 0 16px 24px;
    font-size: 0.92rem;
}

.privacy-content li {
    margin-bottom: 6px;
}

.privacy-content a {
    color: var(--river-blue-dark);
}

.privacy-updated {
    margin-top: 40px;
    color: var(--text-sub);
    font-size: 0.84rem;
}

body {
    padding-top: var(--header-height);
}

@media (max-width: 1024px) {
    .header__nav {
        display: none;
    }

    .header__contact {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .footer__categories {
        grid-template-columns: 1fr 1fr;
    }

    .footer__col:last-child {
        grid-column: 1 / -1;
        border-right: none;
        border-top: 1px solid var(--border-light);
        padding-top: 24px;
        margin-top: 8px;
        flex-direction: row;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .header__logo-text {
        font-size: 0.96rem;
    }

    .header__logo-sub {
        font-size: 0.55rem;
    }

    .mobile-menu__ja {
        font-size: 1.26rem;
    }

    .footer__nav-row {
        padding: 28px 16px 22px;
    }

    .footer__categories {
        grid-template-columns: 1fr;
        padding: 24px 16px;
    }

    .footer__col {
        padding: 16px 0 !important;
        border-right: none !important;
        border-top: 1px solid var(--border-light);
    }

    .footer__col:first-child {
        border-top: none;
    }

    .footer__col:last-child {
        grid-column: auto;
        flex-direction: column;
        align-items: center;
    }

    .footer__bottom {
        padding: 22px 16px;
        text-align: center;
        flex-direction: column;
    }

    .footer__links-row {
        justify-content: center;
    }
}