/* フォント */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700;900&family=Noto+Serif+JP:wght@400;700&family=Playfair+Display:ital,wght@0,700;1,400&family=IBM+Plex+Sans+JP:wght@400;700&display=swap');

:root {
    --primary-color: #0e1c28;
    --secondary-color: #6a4027;
    --accent-color: #e6a65d;
    --light-color: #f8f3eb;
    --dark-color: #0e0e0e;
    --transition-speed: 0.6s cubic-bezier(0.33, 1, 0.68, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'IBM Plex Sans JP', sans-serif;
    color: var(--dark-color);
    background-color: var(--light-color);
    line-height: 1.6;
    overflow-x: hidden;
    perspective: 1px;
    transform-style: preserve-3d;
}

/* プログレスバー */
.progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: transparent;
    z-index: 1000;
}

.progress-bar {
    height: 5px;
    background: var(--accent-color);
    width: 0%;
    transition: width 0.1s ease;
}

/* ローディングスクリーンの修正版 */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--primary-color);
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* 中央ではなく上部から配置 */
    padding-top: 20vh; /* 上部から20%の位置にコンテンツを配置 */
    align-items: center;
    z-index: 2000;
    transition: opacity 1s ease;
}

.loading-logo {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    color: var(--light-color);
    font-size: 2rem;
    margin-bottom: 2rem;
    letter-spacing: 2px;
}

.loading-text {
    color: var(--light-color);
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.loading-progress {
    width: 200px;
    height: 2px;
    background-color: rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.loading-progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0%;
    background-color: var(--accent-color);
    animation: loading 3s ease forwards; /* アニメーションを復活 */
}

@keyframes loading {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* ナビゲーション */
.navbar {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1000;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.menu-toggle {
    width: 50px;
    height: 50px;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    pointer-events: auto;
    position: relative;
    z-index: 3;
    border: none;
}

.menu-toggle:hover {
    transform: scale(1.1);
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--primary-color);
    margin: 3px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

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

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

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

.fullscreen-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    z-index: 2;
}

.fullscreen-menu.active {
    opacity: 1;
    visibility: visible;
}

.menu-items {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.menu-items li {
    margin: 0;
    padding: 0;
}

.menu-item {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    font-size: 2.5rem;
    color: var(--light-color);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    transition: color 0.3s ease;
    display: block;
}

.menu-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background-color: var(--accent-color);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

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

.menu-item:hover::after {
    transform: translateX(0);
}

/* ヒーローセクション */


.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--primary-color);
}

.hero-japan-map {
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    width: 40%;
    height: 70%;
    opacity: 0.1;
    background: url('/images_100/japan-map.svg') center/contain no-repeat;
}

.hero-content {
    position: relative;
    color: var(--light-color);
    z-index: 1;
    padding: 0 2rem;
    max-width: 1800px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    margin-bottom: 7rem;
}

.hero-text-content {
    flex: 3;
}

.hero-logo-wrapper {
    flex: 2;
    display: flex;
    justify-content: center;
    align-items: center;
}

.anniversary-logo {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(0 4px 8px rgba(255, 255, 255, 0.2));
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s var(--transition-speed) forwards;
    animation-delay: 4.5s;
    will-change: opacity, transform;
}

.hero-subtitle {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s var(--transition-speed) forwards;
    animation-delay: 3.5s;
    will-change: opacity, transform;
}

.hero-title {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    font-size: 5rem;
    line-height: 1.2;
    margin-bottom: 2rem;
    letter-spacing: 0.01em;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s var(--transition-speed) forwards;
    animation-delay: 3.8s;
    will-change: opacity, transform;
}

.hero-title .year {
    color: var(--accent-color);
    display: block;
    font-family: 'Playfair Display', serif;
    font-weight: 900;
    font-size: 3rem;
    margin-top: 0.5rem;
}

.hero-desc {
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.2rem;
    line-height: 1.8;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s var(--transition-speed) forwards;
    animation-delay: 4.1s;
    will-change: opacity, transform;
}

.hero-btn {
    display: inline-block;
    padding: 1.2rem 3rem;
    background-color: var(--accent-color);
    color: var(--primary-color);
    text-decoration: none;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    font-size: 1rem;
    letter-spacing: 2px;
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(230, 166, 93, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s var(--transition-speed) forwards;
    animation-delay: 4.4s;
    will-change: opacity, transform;
}

.hero-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.hero-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(230, 166, 93, 0.5);
}

.hero-btn:hover::before {
    transform: translateX(100%);
}

.scroll-indicator {
    position: absolute;
    bottom: 5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--light-color);
    animation: fadeIn 1s ease forwards;
    animation-delay: 4.7s;
    opacity: 0;
}

.scroll-indicator p {
    margin-bottom: 1rem;
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-arrow {
    width: 30px;
    height: 50px;
    border: 2px solid var(--light-color);
    border-radius: 15px;
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    width: 6px;
    height: 6px;
    background-color: var(--light-color);
    border-radius: 50%;
    transform: translateX(-50%);
    animation: scrollAnim 2s infinite;
}

@keyframes scrollAnim {
    0% {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateX(-50%) translateY(25px);
        opacity: 0;
    }
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* レスポンシブ対応 */
@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
        margin-bottom: 10rem;
    }
    
    .hero-text-content {
        padding-right: 0;
        margin-bottom: 2rem;
    }
    
    .anniversary-logo {
        max-width: 200px;
    }
    
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-title .year {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-content {
        padding-top: 100px; /* ヘッダーロゴの下に余白を確保 */
      }

      .scroll-indicator {
        display: none; /* スマホサイズではスクロールインジケーターを非表示 */
      }
}

@media (max-width: 576px) {
    .hero-content {
        margin-bottom: 6rem;
    }
    
    .anniversary-logo {
        max-width: 200px;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-title .year {
        font-size: 1.8rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
}

/* イントロセクション */
.intro {
    position: relative;
    padding: 10rem 2rem;
    background-color: var(--light-color);
    overflow: hidden;
}

.section-title-container {
    position: relative;
    text-align: center;
    margin-bottom: 5rem;
}

.section-subtitle {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    opacity: 0.8;
}

.section-title {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
    letter-spacing: 0.02em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 5px;
    background-color: var(--accent-color);
}

.intro-content {
    display: flex;
    align-items: center;
    gap: 5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.intro-image {
    flex: 1;
    position: relative;
    z-index: 1;
}

.intro-image-main {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    transform: rotate(-3deg);
    transition: transform 0.5s ease;
    position: relative;
    z-index: 1; /* メイン画像の z-index を 1 に設定 */
}

.intro-image:hover .intro-image-main {
    transform: rotate(0deg);
}

.intro-image-accent {
    position: absolute;
    bottom: -20%;
    right: -15%;
    width: 60%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: rotate(5deg);
    transition: transform 0.5s ease;
    z-index: 2; /* アクセント画像の z-index を 2 に設定して上に表示 */
}

.intro-image:hover .intro-image-accent {
    transform: rotate(8deg) translateY(-10px);
}

.intro-text {
    flex: 1;
}

.intro-heading {
    font-family: 'Noto Serif JP', serif;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    line-height: 1.4;
}

.intro-desc {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.intro-quote {
    position: relative;
    font-family: 'Noto Serif JP', serif;
    font-style: italic;
    font-size: 1.3rem;
    padding: 2rem;
    margin-bottom: 2rem;
    border-left: 5px solid var(--accent-color);
    background-color: rgba(230, 166, 93, 0.1);
}

.intro-quote::before,
.intro-quote::after {
    content: '"';
    font-family: 'Playfair Display', serif;
    font-size: 4rem;
    color: var(--accent-color);
    position: absolute;
    opacity: 0.3;
}

.intro-quote::before {
    top: 0;
    left: 10px;
}

.intro-quote::after {
    bottom: -20px;
    right: 10px;
}

.intro-btn {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--primary-color);
    color: var(--light-color);
    text-decoration: none;
    font-family: 'IBM Plex Sans JP', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 1px;
    border-radius: 5px;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.intro-btn:hover {
    transform: translateY(-3px);
    background-color: var(--secondary-color);
}

/* インタラクティブタイムラインセクション */
.timeline {
    position: relative;
    padding: 10rem 0;
    background-color: var(--primary-color);
    color: var(--light-color);
    overflow: hidden;
}

.timeline-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('/images_100/timeline-bg.jpg') center/cover no-repeat;
    opacity: 0.1;
}

.timeline-title-container {
    text-align: center;
    margin-bottom: 8rem;
    position: relative;
    z-index: 1;
    padding: 0 2rem;
}

.timeline-subtitle {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.timeline-title {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
    letter-spacing: 0.02em;
}

.timeline-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 5px;
    background-color: var(--accent-color);
}

.timeline-desc {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
}

.timeline-slider-container {
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.timeline-line {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-50%);
}

.timeline-progress {
    position: absolute;
    top: 50%;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transform: translateY(-50%);
    transition: width 0.5s ease;
}

.timeline-slider {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
    gap: 2rem;
    padding: 4rem 0;
}

.timeline-slider::-webkit-scrollbar {
    display: none;
}

.timeline-item {
    min-width: 350px;
    max-width: 350px;
    scroll-snap-align: center;
    background-color: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 2rem;
    position: relative;
    transition: transform 0.3s ease;
}

.timeline-item:hover {
    transform: translateY(-10px);
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background-color: var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 0 0 5px rgba(230, 166, 93, 0.3);
}

.timeline-item::after {
    content: '';
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 16px;
    background-color: var(--accent-color);
}

.timeline-year {
    font-family: 'Playfair Display', serif;
    font-weight: 900;
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    text-align: center;
}

.timeline-event-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.timeline-event-desc {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.timeline-event-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 1.5rem;
}

.timeline-nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 4rem;
}

.timeline-nav-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.3s ease;
    border: none;
}

.timeline-nav-btn:hover {
    background-color: var(--accent-color);
}

.timeline-nav-btn svg {
    width: 20px;
    height: 20px;
    fill: var(--light-color);
}

/* イベントセクション */
.events {
    position: relative;
    padding: 10rem 2rem;
    background-color: var(--light-color);
    overflow: hidden;
}

.events-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(230, 166, 93, 0.05) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.5;
}

.events-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.events-title-container {
    text-align: center;
    margin-bottom: 5rem;
}

.events-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.event-card {
    position: relative;
    background-color: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.event-card:hover {
    transform: translateY(-15px);
}

.event-card-label {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--accent-color);
    color: var(--primary-color);
    font-family: 'IBM Plex Sans JP', sans-serif;
    font-weight: 700;
    font-size: 0.8rem;
    border-radius: 30px;
    z-index: 1;
}

.event-card-img-container {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.event-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.event-card:hover .event-card-img {
    transform: scale(1.1);
}

.event-card-content {
    padding: 2rem;
}

.event-card-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.event-card-desc {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: #555;
}

.event-card-link {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.event-card-link svg {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.event-card-link:hover {
    color: var(--accent-color);
}

.event-card-link:hover svg {
    transform: translateX(5px);
}

/* フォトギャラリーセクション */
.gallery {
    position: relative;
    padding: 10rem 2rem;
    background-color: var(--primary-color);
    color: var(--light-color);
}

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

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-template-rows: repeat(12, 50px);
    gap: 1.5rem;
    margin-top: 5rem;
}

.gallery-item {
    overflow: hidden;
    border-radius: 10px;
    position: relative;
    cursor: pointer;
}

.gallery-item:nth-child(1) {
    grid-column: 1 / 7;
    grid-row: 1 / 7;
}

.gallery-item:nth-child(2) {
    grid-column: 7 / 13;
    grid-row: 1 / 5;
}

.gallery-item:nth-child(3) {
    grid-column: 7 / 10;
    grid-row: 5 / 9;
}

.gallery-item:nth-child(4) {
    grid-column: 10 / 13;
    grid-row: 5 / 9;
}

.gallery-item:nth-child(5) {
    grid-column: 1 / 5;
    grid-row: 7 / 13;
}

.gallery-item:nth-child(6) {
    grid-column: 5 / 13;
    grid-row: 9 / 13;
}

.gallery-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover .gallery-img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(14, 28, 40, 0.8), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-caption {
    font-size: 1rem;
    font-family: 'Noto Serif JP', serif;
}

/* CTAセクション */
.cta {
    position: relative;
    padding: 10rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--light-color);
    text-align: center;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('/images_100/cta-bg.jpg') center/cover no-repeat;
    opacity: 0.1;
    filter: blur(5px);
}

.cta-container {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.cta-title {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    font-size: 4rem;
    margin-bottom: 2rem;
    line-height: 1.2;
    letter-spacing: 0.02em;
}

.cta-subtitle {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 3rem;
}

.cta-text {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 4rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.cta-btn-primary {
    display: inline-block;
    padding: 1.2rem 3rem;
    background-color: var(--accent-color);
    color: var(--primary-color);
    text-decoration: none;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    font-size: 1rem;
    letter-spacing: 2px;
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(230, 166, 93, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.cta-btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.cta-btn-primary:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(230, 166, 93, 0.5);
}

.cta-btn-primary:hover::before {
    transform: translateX(100%);
}

.cta-btn-secondary {
    display: inline-block;
    padding: 1.2rem 3rem;
    background-color: transparent;
    color: var(--light-color);
    text-decoration: none;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    font-size: 1rem;
    letter-spacing: 2px;
    border-radius: 50px;
    border: 2px solid var(--light-color);
    transition: transform 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.cta-btn-secondary:hover {
    transform: translateY(-5px);
    background-color: var(--light-color);
    color: var(--primary-color);
}

/* フッターセクション */
footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 5rem 2rem 2rem;
    position: relative;
    overflow: hidden;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5rem;
    flex-wrap: wrap;
    gap: 3rem;
}

.footer-info {
    max-width: 400px;
}

.footer-logo {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
    letter-spacing: 0.02em;
}

.footer-desc {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-color);
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.footer-social-link:hover {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

.footer-nav {
    display: flex;
    gap: 5rem;
    flex-wrap: wrap;
}

.footer-nav-col {
    min-width: 150px;
}

.footer-nav-title {
    font-family: 'IBM Plex Sans JP', sans-serif;
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
}

.footer-nav-list {
    list-style: none;
}

.footer-nav-item {
    margin-bottom: 1rem;
}

.footer-nav-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 1rem;
}

.footer-nav-link:hover {
    color: var(--accent-color);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}
.footer-link {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

/* レスポンシブデザイン */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 4rem;
    }
    
    .intro-content {
        flex-direction: column-reverse;
    }
    
    .intro-image {
        margin-bottom: 3rem;
    }
    
    .intro-image-main, .intro-image-accent {
        width: 100%;
        max-width: 600px;
        margin: 0 auto;
    }
    
    .events-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-grid {
        grid-template-rows: repeat(18, 50px);
    }
    
    .gallery-item:nth-child(1) {
        grid-column: 1 / 7;
        grid-row: 1 / 7;
    }
    
    .gallery-item:nth-child(2) {
        grid-column: 7 / 13;
        grid-row: 1 / 7;
    }
    
    .gallery-item:nth-child(3) {
        grid-column: 1 / 7;
        grid-row: 7 / 13;
    }
    
    .gallery-item:nth-child(4) {
        grid-column: 7 / 13;
        grid-row: 7 / 13;
    }
    
    .gallery-item:nth-child(5) {
        grid-column: 1 / 7;
        grid-row: 13 / 19;
    }
    
    .gallery-item:nth-child(6) {
        grid-column: 7 / 13;
        grid-row: 13 / 19;
    }
}

@media (max-width: 992px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
    
    .intro-heading {
        font-size: 2rem;
    }
    
    .timeline-title {
        font-size: 3rem;
    }
    
    .timeline-item {
        min-width: 300px;
        max-width: 300px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-desc {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .events-cards {
        grid-template-columns: 1fr;
    }
    
    .cta-title {
        font-size: 3rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: minmax(250px, auto);
        grid-template-rows: unset;
    }
    
    .gallery-item:nth-child(1),
    .gallery-item:nth-child(2),
    .gallery-item:nth-child(3),
    .gallery-item:nth-child(4),
    .gallery-item:nth-child(5),
    .gallery-item:nth-child(6) {
        grid-column: 1;
        grid-row: auto;
    }
    
    .footer-top {
        flex-direction: column;
    }
    
    .footer-nav {
        width: 100%;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .intro-heading {
        font-size: 1.8rem;
    }
    
    .cta-title {
        font-size: 2.5rem;
    }
    
    .cta-subtitle {
        font-size: 1.2rem;
    }
    
    .menu-items {
        gap: 1.5rem;
    }
    
    .menu-item {
        font-size: 2rem;
    }
}

/* ロゴのスタイル */
.header-logo {
    position: fixed;
    top: 2rem;
    left: 2rem;
    z-index: 1000;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 900;
    color: var(--light-color);
    font-size: 1.5rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: transform 0.3s ease, color 0.3s ease;
    letter-spacing: 0.02em;
}

.header-logo:hover {
    transform: scale(1.05);
    color: var(--accent-color);
}

.header-logo-icon {
    width: 40px;
    height: 40px;
    margin-right: 0.5rem;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary-color);
}

/* スクロール時のロゴ色変更（任意） */
.scrolled .header-logo {
    color: var(--primary-color);
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .header-logo {
        font-size: 1.2rem;
    }
    
    .header-logo-icon {
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }
}