/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    overflow-x: hidden;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 50px;
    left: 0;
    width: 100%;
    height: 80px;
    z-index: 1000;
    padding: 0 40px;
    display: flex;
    align-items: center;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.header.header-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgb(255, 255, 255);
    backdrop-filter: blur(2px);
    border-radius: 100px;
    padding: 0 25px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0, 163, 244, 0.1);
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    height: 80px;
    transition: box-shadow 0.3s ease;
}

.header-container:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0, 163, 244, 0.2);
}

.header-left {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.logo-image {
    height: 50px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    transition: transform 0.3s ease, opacity 0.3s ease;
    cursor: pointer;
    display: block;
}

.logo-image:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 25px;
}

.header-right a {
    cursor: pointer;
}

.nav-link {
    color: #000;
    text-decoration: none;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    font-family: 'I-OTFゴシックオールドPro M{pm}', '游ゴシック Medium', '游ゴシック Medium', 'Yu Gothic Medium', '游ゴシック体', YuGothic, 'Hiragino Sans', 'ヒラギノ角ゴ ProN', 'Hiragino Kaku Gothic ProN', 'メイリオ', Meiryo, sans-serif;
}

.nav-link:hover {
    color: #00A3F4;
    background: rgba(0, 163, 244, 0.1);
    transform: translateY(-2px);
    cursor: pointer;
}

.header-button {
    background: linear-gradient(135deg, #00A3F4 0%, #0088D1 100%);
    color: #fff;
    border: none;
    border-radius: 150px;
    padding: 14px 20px;
    font-size: 14px;
    line-height: 1.5;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(0, 163, 244, 0.3);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    font-family: 'I-OTFゴシックオールドPro M{pm}', '游ゴシック Medium', '游ゴシック Medium', 'Yu Gothic Medium', '游ゴシック体', YuGothic, 'Hiragino Sans', 'ヒラギノ角ゴ ProN', 'Hiragino Kaku Gothic ProN', 'メイリオ', Meiryo, sans-serif;
}

.header-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.header-button:hover::before {
    left: 100%;
}

.header-button:hover {
    background: linear-gradient(135deg, #0088D1 0%, #0066A3 100%);
    box-shadow: 0 6px 20px rgba(0, 163, 244, 0.4);
    transform: translateY(-2px);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 24px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 2.5px;
    background: #000;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== FOOTER SECTION ===== */
.footer-section {
    position: relative;
    width: 100%;
    background: linear-gradient(180deg, rgb(255, 255, 255) 0%,#2ea5fa 50%, #1ea1ff 100%);
    padding: 120px 40px 80px 40px;
    color: #ffffff;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-left {
    flex: 0 0 auto;
    display: flex;
    justify-content: center;
    width: 100%;
}

.footer-logo {
    margin-bottom: 0;
    margin-top: 20px;
    display: flex;
    justify-content: center;
}

.footer-logo-image {
    height: 32px;
    width: auto;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    font-weight: 400;
    color: #ffffff;
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}

.contact-icon {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 12px;
    height: 12px;
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-text {
    line-height: 1.5;
}

.footer-right {
    display: flex;
    gap: 0;
    flex: 1;
    justify-content: center;
    width: 100%;
}

.footer-nav-column {
    display: flex;
    flex-direction: row;
    gap: 40px;
    justify-content: center;
    align-items: center;
}

.footer-link {
    font-size: 16px;
    font-weight: 400;
    color: #ffffff;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    padding: 4px 0;
    position: relative;
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}

.footer-link:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.footer-divider {
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.3);
    margin: 40px 0 24px 0;
}

.footer-copyright {
    text-align: center;
}

.footer-copyright p {
    font-size: 14px;
    font-weight: 400;
    color: #ffffff;
    margin: 0;
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}

/* ===== SIDEBAR ===== */
.sidebar-toggle {
    position: fixed;
    top: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1001;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
}

.sidebar-toggle.visible {
    display: flex;
    opacity: 1;
    visibility: visible;
    z-index: 3000000;
}

.sidebar-toggle:hover {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.sidebar-toggle span {
    width: 24px;
    height: 2px;
    background: #000;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.sidebar-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.sidebar-toggle.active span:nth-child(2) {
    opacity: 0;
}

.sidebar-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.sidebar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 400px;
    max-width: 85vw;
    height: 100vh;
    background: #ffffff;
    z-index: 3000000;
    transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
}

.sidebar-menu.active {
    right: 0;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    pointer-events: none;
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.sidebar-content {
    padding: 40px 30px;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
    background: #ffffff;
    z-index: 30000000;
}

.sidebar-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    font-size: 32px;
    color: #000;
    cursor: pointer;
    line-height: 1;
    transition: transform 0.3s ease;
}

.sidebar-close:hover {
    transform: rotate(90deg);
}

.sidebar-logo {
    margin-bottom: 40px;
    padding-top: 20px;
    cursor: pointer;
}

.sidebar-logo .logo-image {
    height: 60px;
    max-width: 240px;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar-link {
    color: #000;
    text-decoration: none;
    font-size: 18px;
    font-weight: 400;
    padding: 15px 20px;
    margin: 0 -20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    display: block;
    font-family: 'I-OTFゴシックオールドPro M{pm}', '游ゴシック Medium', '游ゴシック Medium', 'Yu Gothic Medium', '游ゴシック体', YuGothic, 'Hiragino Sans', 'ヒラギノ角ゴ ProN', 'Hiragino Kaku Gothic ProN', 'メイリオ', Meiryo, sans-serif;
}

.sidebar-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: #00A3F4;
    transform: scaleY(0);
    transition: transform 0.3s ease;
    border-radius: 0 4px 4px 0;
}

.sidebar-link:hover {
    color: #00A3F4;
    background: rgba(0, 163, 244, 0.1);
    padding-left: 24px;
    transform: translateX(4px);
}

.sidebar-link:hover::before {
    transform: scaleY(1);
}

.sidebar-button {
    background: linear-gradient(135deg, #00A3F4 0%, #0088D1 100%);
    color: #fff;
    border: none;
    border-radius: 150px;
    padding: 14px 20px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 20px;
    box-shadow: 0 4px 15px rgba(0, 163, 244, 0.3);
    font-family: 'I-OTFゴシックオールドPro M{pm}', '游ゴシック Medium', '游ゴシック Medium', 'Yu Gothic Medium', '游ゴシック体', YuGothic, 'Hiragino Sans', 'ヒラギノ角ゴ ProN', 'Hiragino Kaku Gothic ProN', 'メイリオ', Meiryo, sans-serif;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.sidebar-button:hover {
    background: linear-gradient(135deg, #0088D1 0%, #0066A3 100%);
    box-shadow: 0 6px 20px rgba(0, 163, 244, 0.4);
    transform: translateY(-2px);
}

/* ===== FIXED BOTTOM BUTTONS ===== */
.fixed-bottom-buttons {
    position: fixed;
    bottom: 0px;
    right: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 300000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.fixed-bottom-buttons.visible {
    opacity: 1;
    visibility: visible;
}

.fixed-cta-button {
    background: #007AB6;
    color: #fff;
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 8px 8px 0 0;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s ease, transform 0.2s ease;
    white-space: nowrap;
}

.fixed-cta-button:hover {
    background: #006291;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 122, 182, 0.5);
}

.contact-icon{
    display: flex;
}

.cta-icon svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
    display: flex;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .header {
        padding: 0 20px;
        height: 80px;
        top: 20px;
    }
    
    .header-container {
        height: 80px;
        padding: 0 20px;
    }
    
    .logo-image {
        height: 60px;
        max-width: 240px;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .header-right {
        display: none;
    }
    
    .footer-section {
        padding: 60px 30px 80px 30px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
        justify-content: center;
        align-items: center;
    }
    
    .footer-right {
        justify-content: center;
        width: 100%;
    }
    
    .footer-nav-column {
        gap: 30px;
    }
    
    .footer-logo-image {
        height: 28px;
    }
    
    .footer-logo {
        display: flex;
        justify-content: center;
        align-items: center;
    }
    
    .footer-contact {
        display: flex;
        justify-content: center;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 20px;
        height: 80px;
        top: 20px;
    }
    
    .header-container {
        height: 80px;
        padding: 0 20px;
    }
    
    .logo-image {
        height: 50px;
        max-width: 200px;
    }
    
    .footer-section {
        padding: 60px 20px 80px 20px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 25px;
        justify-content: center;
        align-items: center;
    }

    .pc-only {
        display: none;
    }
    
    .footer-right {
        justify-content: center;
        width: 100%;
    }
    
    .footer-nav-column {
        flex-direction: row;
        gap: 20px;
        width: auto;
        flex-wrap: wrap;
    }
    
    .contact-item {
        font-size: 14px;
    }
    
    .footer-link {
        font-size: 14px;
    }
    
    .footer-copyright p {
        font-size: 12px;
    }
}

@media (max-width: 580px) {
    .header {
        padding: 0 15px;
        height: 70px;
        top: 15px;
    }
    
    .header-container {
        height: 70px;
        padding: 0 15px;
    }
    
    .logo-image {
        height: 40px;
        max-width: 160px;
    }
    
    .footer-section {
        padding: 40px 15px 80px 15px;
    }
    
    .footer-content {
        gap: 20px;
        justify-content: center;
        align-items: center;
    }
    
    .footer-right {
        justify-content: center;
        width: 100%;
    }
    
    .footer-nav-column {
        gap: 15px;
        flex-wrap: wrap;
    }
    
    .contact-item {
        font-size: 13px;
    }
    
    .footer-link {
        font-size: 13px;
    }
    
    .footer-copyright p {
        font-size: 11px;
    }
    
    .sidebar-menu {
        width: 100%;
        max-width: 100%;
    }

    .fixed-bottom-buttons {
        bottom: 0;
        right: 0;
        left: 0;
        width: 100%;
        align-items: center;
        justify-content: center;
    }

    .fixed-cta-button {
        width: 100%;
        justify-content: center;
        border-radius: 0;
        padding: 16px 20px;
    }
}

/* ===== NEWS SECTION ===== */
.news-section {
    position: relative;
    width: 100%;
    background: transparent;
    padding: 100px 40px 150px 40px;
    min-height: auto;
    opacity: 1;
    visibility: visible;
}

.news-container {
    max-width: 1000px;
    margin: 0 auto;
}

.news-top {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin-bottom: 60px;
}

.news-title-bg {
    position: relative;
    font-size: 42px;
    font-weight: 700;
    color: #1bb8ce;
    line-height: 1.4;
    letter-spacing: 0.08em;
    font-family: 'I-OTFゴシックオールドPro M{pm}', '游ゴシック Medium', '游ゴシック Medium', 'Yu Gothic Medium', '游ゴシック体', YuGothic, 'Hiragino Sans', 'ヒラギノ角ゴ ProN', 'Hiragino Kaku Gothic ProN', 'メイリオ', Meiryo, sans-serif;
    text-align: center;
    margin-bottom: 30px;
    pointer-events: none;
    white-space: nowrap;
    opacity: 0;
    transform: translateY(-30px);
    transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.215, 0.610, 0.355, 1.000);
}

.news-title-bg.visible {
    opacity: 1;
    transform: translateY(0);
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-bottom: 40px;
}

.news-item {
    display: flex;
    align-items: center;
    padding: 24px 0;
    border-bottom: 1px solid rgba(66, 176, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
}

.news-item:hover {
    background-color: rgba(66, 176, 255, 0.1);
    transform: translateX(5px);
    box-shadow: -2px 0 8px rgba(66, 176, 255, 0.2);
}

.news-item:last-child {
    border-bottom: none;
}

.news-date {
    font-size: 16px;
    font-weight: 400;
    color: #333333;
    min-width: 120px;
    margin-right: 24px;
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}

.news-category {
    font-size: 14px;
    font-weight: 400;
    color: #ffffff;
    background: #1bb8ce;
    padding: 6px 16px;
    border-radius: 20px;
    width: 100px;
    min-width: 100px;
    max-width: 100px;
    margin-right: 24px;
    white-space: nowrap;
    text-align: center;
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}

.news-category-eiken {
    background: #1bb8ce;
}

.news-description {
    font-size: 15px;
    font-weight: 400;
    color: #333333;
    flex: 1;
    line-height: 1.6;
    text-align: left;
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}

.news-arrow {
    font-size: 20px;
    color: #1bb8ce;
    margin-left: 16px;
    min-width: 24px;
    text-align: right;
}

.news-view-all-button {
    display: block;
    margin: 0 auto;
    padding: 16px 48px;
    font-size: 18px;
    font-weight: 400;
    color: #ffffff;
    background: #1bb8ce;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}

.news-view-all-button:hover {
    background: #2A9FE0;
    transform: translateY(-2px);
}

.news-view-all-button:active {
    transform: translateY(0);
}

/* Responsive Design for News Section */
@media (max-width: 1024px) {
    .news-section {
        padding: 0px 30px 120px 30px;
    }
    
    .news-title-bg {
        font-size: 40px;
        margin-bottom: 30px;
    }
    
    .news-item {
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .news-date {
        min-width: 100px;
        margin-right: 16px;
    }
    
    .news-category {
        width: 100px;
        min-width: 100px;
        max-width: 100px;
        margin-right: 16px;
    }
    
    .news-description {
        width: 100%;
        order: 3;
    }
    
    .news-arrow {
        order: 2;
        margin-left: auto;
    }
}

@media (max-width: 768px) {
    .news-section {
        padding: 0px 20px 100px 20px;
    }
    
    .news-title-bg {
        font-size: 28px;
        margin-bottom: 20px;
    }
    
    .news-item {
        position: relative;
        padding: 20px 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .news-date {
        min-width: auto;
        margin-right: 0;
        font-size: 14px;
    }
    
    .news-category {
        width: 80px;
        min-width: 80px;
        max-width: 80px;
        margin-right: 0;
        font-size: 12px;
        padding: 4px 12px;
    }
    
    .news-description {
        font-size: 14px;
        width: 100%;
        order: 3;
    }
    
    .news-arrow {
        display: block;
        position: absolute;
        right: 0;
        top: 20px;
        order: 2;
        margin-left: 0;
    }
    
    .news-view-all-button {
        padding: 14px 40px;
        font-size: 16px;
    }
}

@media (max-width: 580px) {
    .news-section {
        padding: 30px 20px;
    }
    
    .news-top {
        margin-bottom: 30px;
    }
}

/* ===== FIXED BACKGROUND ===== */
.fixed-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -100;
    pointer-events: none;
}

.fixed-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

@media (max-width: 768px) {
    .fixed-background {
        display: none;
    }
}