/* ヘッダースタイル */

.site-header {
    background-color: rgba(255, 255, 255, 0.95);
    position: sticky;
    top: 0;
    z-index: 40;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    padding: 1.25rem 1rem;
}

.header-container {
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: #111827;
}

.header-logo img {
    width: auto;
    height: 2.5rem;
}

.header-logo span {
    font-size: 1.25rem;
    font-weight: bold;
}

.header-nav {
    display: none;
}

@media (min-width: 768px) {
    .header-nav {
        display: flex;
        gap: 2rem;
    }
}

.nav-link {
    color: #4b5563;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    font-size: 20px;
}

.nav-link:hover {
    color: #dc2626;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-button {
    display: none;
    padding: 0.5rem 1rem;
    background-color: #00c300;
    /* LINEのカラーコード */
    color: white;
    border: 1px solid white;
    border-radius: 0.375rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
    font-size: 20px;
}

@media (min-width: 768px) {
    .header-button {
        display: block;
    }
}

.header-button:hover {
    background-color: #991b1b;
}

.menu-button {
    padding: 0.5rem;
    color: #dc2626;
    background: none;
    border: 1px solid white;
    border-radius: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    font-size: 1.6rem;
    font-size: 20px;
}

.menu-button:hover {
    background-color: #bdbdbd;
}


/* 以下、元のメニューのスタイル */

.overlay {
    position: fixed;
    inset: 0;
    background: linear-gradient(to bottom right, #dc2626, #991b1b, #7f1d1d);
    color: white;
    z-index: 50;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease-in-out;
    backdrop-filter: blur(8px);
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}


/* アニメーション用の追加スタイル */

.header,
.icon-menu,
.desktop-content,
.mobile-content {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease-out;
}

.overlay.active .header {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.2s;
}

.overlay.active .icon-menu {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.3s;
}

.overlay.active .desktop-content,
.overlay.active .mobile-content {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.4s;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: sticky;
    top: 0;
    background-color: rgb(255, 255, 255);
    backdrop-filter: blur(8px);
    z-index: 9999;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.portal-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: rgba(255, 255, 255, 0.9);
    color: #dc2626;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    cursor: pointer;
    white-space: nowrap;
    margin-left: auto;
}

.portal-button:hover {
    background-color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.portal-button .icon {
    width: 1rem;
    height: 1rem;
    stroke: #dc2626;
}

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

.logo img {
    width: 2rem;
    height: 2rem;
    border-radius: 9999px;
}

.logo span {
    font-size: 1.25rem;
    font-weight: bold;
}

.close-button {
    padding: 0.5rem;
    color: #dc2626;
    background: none;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1.6rem;
}

.close-button:hover {
    background-color: #c4c4c4;
}

.content {
    padding: 1rem;
    max-width: 72rem;
    margin: 0 auto;
}

.icon-menu {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

@media (min-width: 968px) {
    .icon-menu {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }
}

.icon-menu-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.25rem;
    background-color: rgba(255, 255, 255, 0.00);
    border: 1px solid rgb(255, 255, 255);
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1);
}

.icon-menu-item span {
    font-weight: 500;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.icon-menu-item .icon {
    width: 1.75rem;
    height: 1.75rem;
    transition: all 0.3s ease;
}

.icon-menu-item i {
    font-size: 1.8rem;
}

@media (min-width: 768px) {
    .icon-menu-item {
        background-color: rgba(255, 255, 255, 0.05);
    }
}

.icon-menu-item:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.02) translateY(-2px);
}

.icon-menu-item:hover .icon,
.icon-menu-item:hover span {
    transform: scale(1.05);
}

.main-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 898px) {
    .mobile-content {
        display: none;
    }
}

.section-title {
    font-size: 24px;
    font-weight: bold;
    color: #ffffff;
    border-bottom: 1px solid white;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.menu-list {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 1rem;
    list-style: none;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1);
    background-color: transparent;
    font-size: 20px;
}

.menu-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.menu-item-dot {
    transition: all 0.3s ease;
}

.menu-item:hover .menu-item-dot {
    transform: scale(1.2);
    background-color: white;
}

.menu-item-dot {
    width: 0.5rem;
    height: 0.5rem;
    background-color: #fecaca;
    border-radius: 9999px;
    margin-right: 0.75rem;
}

.icon {
    width: 1.5rem;
    height: 1.5rem;
}

.shared-image-item {
    text-align: left;
}

@media (max-width: 897px) {
    .desktop-content {
        display: none;
    }
    .icon-menu-item {
        padding: 0.5rem;
        font-size: 0.8rem;
    }
    .menu-list {
        grid-template-columns: 1fr 1fr;
    }
    .icon-menu-item i {
        font-size: 1.4rem;
    }
    .icon-menu-item span {
        font-weight: 500;
        font-size: 0.8rem;
        transition: all 0.3s ease;
        white-space: nowrap;
    }
    .menu-item {
        font-size: 16px;
    }
    .section-title {
        font-size: 20px;
    }
}