/* ==========================================
   基本設定とリセット
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* カラーパレット - 宇宙と黒猫テーマ */
    --primary-color: #9b59b6;
    /* 紫 - ミルナの額のストライプ */
    --secondary-color: #3498db;
    /* ブルー - ミルナの瞳 */
    --dark-bg: #0a0e27;
    --darker-bg: #050812;
    --light-text: #ffffff;
    --gray-text: #b8c5d6;
    --accent-purple: #8e44ad;
    --accent-blue: #5dade2;
    --moon-glow: #f4e7c3;

    /* フォント */
    --font-primary: 'Poppins', 'Noto Sans JP', sans-serif;
    --font-japanese: 'Noto Sans JP', sans-serif;

    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* トランジション */
    --transition-fast: 0.3s ease;
    --transition-smooth: 0.6s ease;
}

body {
    font-family: var(--font-japanese);
    background-color: var(--darker-bg);
    color: var(--light-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* スキップリンク（アクセシビリティ） */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0 0 8px 8px;
    z-index: 10000;
    text-decoration: none;
    font-weight: 600;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==========================================
   星空背景アニメーション
   ========================================== */
.stars-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, var(--darker-bg) 0%, var(--dark-bg) 50%, #1a1a3e 100%);
    z-index: -1;
    overflow: hidden;
}

/* 星の要素（JavaScriptで動的生成） */
.star {
    position: absolute;
    background: white;
    border-radius: 50%;
    animation: twinkle 3s infinite;
}

@keyframes twinkle {

    0%,
    100% {
        opacity: 0.3;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* ==========================================
   ナビゲーションバー
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 4px 20px rgba(155, 89, 182, 0.2);
    transition: var(--transition-fast);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: 0 4px 30px rgba(155, 89, 182, 0.4);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition-fast);
}

.nav-logo:hover {
    transform: translateY(-2px);
    color: var(--accent-purple);
}

.nav-logo i {
    font-size: 1.8rem;
}

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

.nav-menu a {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition-fast);
    padding: 0.5rem 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition-fast);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

/* SNSリンク */
.nav-social {
    display: flex;
    gap: 1rem;
    align-items: center;
    padding-left: 1rem;
    margin-left: 1rem;
    border-left: 2px solid rgba(155, 89, 182, 0.3);
}

.nav-social a {
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(155, 89, 182, 0.2);
    transition: var(--transition-fast);
    padding: 0;
}

.nav-social a::after {
    display: none;
}

.nav-social a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(155, 89, 182, 0.5);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.3rem;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--light-text);
    border-radius: 3px;
    transition: var(--transition-fast);
}

/* ==========================================
   ヒーローセクション
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    padding: var(--spacing-xl) var(--spacing-md);
}

.moon-container {
    position: absolute;
    top: 15%;
    right: 10%;
    animation: float 6s ease-in-out infinite;
}

.moon {
    width: 150px;
    height: 150px;
    background: radial-gradient(circle at 30% 30%, var(--moon-glow), #e8d4a8);
    border-radius: 50%;
    box-shadow:
        0 0 40px rgba(244, 231, 195, 0.6),
        0 0 80px rgba(244, 231, 195, 0.4),
        inset -10px -10px 20px rgba(200, 180, 140, 0.3);
    position: relative;
}

.moon::before,
.moon::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(200, 180, 140, 0.2);
}

.moon::before {
    width: 30px;
    height: 30px;
    top: 40%;
    left: 30%;
}

.moon::after {
    width: 20px;
    height: 20px;
    top: 60%;
    left: 60%;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out;
}

/* グリッチエフェクト */
.glitch {
    position: relative;
    display: inline-block;
}

.glitch:hover::before,
.glitch:hover::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch:hover::before {
    animation: glitch-1 0.3s infinite;
    color: var(--secondary-color);
    z-index: -1;
}

.glitch:hover::after {
    animation: glitch-2 0.3s infinite;
    color: var(--primary-color);
    z-index: -2;
}

@keyframes glitch-1 {

    0%,
    100% {
        transform: translate(0);
    }

    33% {
        transform: translate(-2px, 2px);
    }

    66% {
        transform: translate(2px, -2px);
    }
}

@keyframes glitch-2 {

    0%,
    100% {
        transform: translate(0);
    }

    33% {
        transform: translate(2px, -2px);
    }

    66% {
        transform: translate(-2px, 2px);
    }
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: var(--gray-text);
    margin-bottom: var(--spacing-xs);
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: var(--accent-blue);
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-primary);
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.hero-tagline {
    font-size: clamp(0.9rem, 1.8vw, 1.1rem);
    color: var(--gray-text);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-primary);
    animation: fadeInUp 1s ease-out 0.5s backwards;
    letter-spacing: 0.1em;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
    color: white;
    box-shadow: 0 10px 30px rgba(155, 89, 182, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(155, 89, 182, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--light-text);
    border: 2px solid var(--secondary-color);
}

.btn-secondary:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(52, 152, 219, 0.4);
}

/* スクロールインジケーター */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    animation: bounce 2s infinite;
}

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

.wheel {
    width: 4px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 1.5s infinite;
}

@keyframes scroll-wheel {
    0% {
        opacity: 1;
        top: 10px;
    }

    100% {
        opacity: 0;
        top: 30px;
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

.scroll-indicator p {
    font-size: 0.9rem;
    color: var(--gray-text);
}

.scroll-indicator.hidden {
    opacity: 0;
    pointer-events: none;
}

/* ==========================================
   セクション共通スタイル
   ========================================== */
section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.section-title i {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ==========================================
   プロフィールセクション
   ========================================== */
.about {
    background: rgba(15, 20, 45, 0.5);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(155, 89, 182, 0.3);
    transition: var(--transition-smooth);
}

.image-frame:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 80px rgba(155, 89, 182, 0.5);
}

.image-frame img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition-smooth);
}

.image-frame:hover img {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.2), rgba(52, 152, 219, 0.2));
    opacity: 0;
    transition: var(--transition-fast);
}

.image-frame:hover .image-overlay {
    opacity: 1;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.profile-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: var(--spacing-sm);
    background: rgba(155, 89, 182, 0.1);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    transition: var(--transition-fast);
}

.info-item:hover {
    background: rgba(155, 89, 182, 0.2);
    transform: translateX(10px);
}

.info-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 0.2rem;
}

.info-item strong {
    display: block;
    color: var(--accent-blue);
    margin-bottom: 0.3rem;
}

.info-item p {
    color: var(--gray-text);
}

.features h4 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.features ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.features li {
    color: var(--gray-text);
    padding: 0.5rem;
    background: rgba(52, 152, 219, 0.1);
    border-radius: 8px;
    transition: var(--transition-fast);
}

.features li:hover {
    background: rgba(52, 152, 219, 0.2);
    transform: translateX(5px);
}

/* ==========================================
   ギャラリーセクション
   ========================================== */
.gallery-section {
    background: transparent;
}

.gallery-load-more {
    text-align: center;
    margin-top: 2rem;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--light-text);
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 0 20px rgba(155, 89, 182, 0.4);
}

.gallery-item.hidden-folded {
    display: none !important;
}

/* ギャラリーフィルターボタン */
.gallery-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.8rem;
    border: 2px solid rgba(155, 89, 182, 0.3);
    border-radius: 50px;
    background: transparent;
    color: var(--gray-text);
    font-family: var(--font-japanese);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--light-text);
    background: rgba(155, 89, 182, 0.15);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
    border-color: transparent;
    color: white;
    box-shadow: 0 5px 20px rgba(155, 89, 182, 0.4);
}

.filter-btn i {
    font-size: 0.85rem;
}

/* ギャラリーメイソンリーグリッド */
.gallery-masonry {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    grid-auto-rows: 280px;
    align-items: stretch;
}

.gallery-item.hidden {
    display: none;
}

.gallery-item.fade-out {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.gallery-item.fade-in {
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

/* .gallery-grid は .gallery-masonry と併用時、masonry側を優先 */
.gallery-grid {
    gap: var(--spacing-md);
}

.gallery-item {
    opacity: 1;
    height: 100%;
    min-height: 0;
    overflow: hidden;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.gallery-card {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    transition: var(--transition-smooth);
    height: 100%;
    cursor: pointer;
    -webkit-tap-highlight-color: rgba(155, 89, 182, 0.3);
    -webkit-user-select: none;
    user-select: none;
}

.gallery-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 60px rgba(155, 89, 182, 0.4);
}

.gallery-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

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

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(10, 14, 39, 0.95), transparent);
    opacity: 0;
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-start;
    pointer-events: none;
}

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

.gallery-info {
    margin-top: auto;
    color: white;
}

.gallery-overlay h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.gallery-overlay p {
    color: var(--gray-text);
}

.gallery-expand {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(155, 89, 182, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    transition: var(--transition-fast);
    opacity: 0;
    pointer-events: none;
}

.gallery-card:hover .gallery-expand {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.2);
}

.gallery-card:hover .gallery-expand {
    transform: translate(-50%, -50%) scale(1.2);
}

.gallery-card.placeholder {
    background: rgba(155, 89, 182, 0.1);
    border: 2px dashed var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: default;
}

.gallery-card.placeholder:hover {
    transform: translateY(-5px);
}

.placeholder-content {
    text-align: center;
    color: var(--gray-text);
}

.placeholder-content i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    opacity: 0.5;
}

.placeholder-content p {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.placeholder-content span {
    font-size: 0.9rem;
    color: var(--accent-blue);
}

/* ライトボックス */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10002;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-image-container {
    max-width: 100%;
    max-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    touch-action: pan-x pan-y pinch-zoom;
    -webkit-overflow-scrolling: touch;
}

.lightbox-image-container img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(155, 89, 182, 0.5);
    animation: lightboxZoomIn 0.4s ease-out;
    transform-origin: center center;
    transition: transform 0.2s ease;
    touch-action: pinch-zoom;
}

@keyframes lightboxZoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.lightbox-info {
    text-align: center;
    max-width: 600px;
}

.lightbox-info h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.lightbox-info p {
    color: var(--gray-text);
    font-size: 1.1rem;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(155, 89, 182, 0.8);
    border: none;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.lightbox-close {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 10003;
    width: 48px;
    height: 48px;
    font-size: 1.6rem;
    background: rgba(155, 89, 182, 0.9);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.lightbox-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

.lightbox-prev:hover {
    transform: translateY(-50%) scale(1.1);
}

.lightbox-next:hover {
    transform: translateY(-50%) scale(1.1);
}

/* ==========================================
   ストーリーセクション
   ========================================== */
.story {
    background: rgba(15, 20, 45, 0.5);
}

.story-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.story-card {
    background: rgba(155, 89, 182, 0.1);
    padding: var(--spacing-md);
    border-radius: 15px;
    border: 1px solid rgba(155, 89, 182, 0.3);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.story-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(155, 89, 182, 0.2), transparent);
    transition: var(--transition-smooth);
}

.story-card:hover::before {
    left: 100%;
}

.story-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 50px rgba(155, 89, 182, 0.3);
}

.story-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    transition: var(--transition-fast);
}

.story-card:hover .story-icon {
    transform: rotate(360deg) scale(1.1);
}

.story-icon i {
    font-size: 1.8rem;
    color: white;
}

.story-card h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.story-card p {
    color: var(--gray-text);
    line-height: 1.8;
}

/* ==========================================
   ミルナの一日タイムラインセクション
   ========================================== */
.daily-section {
    background: rgba(15, 20, 45, 0.5);
}

.daily-intro {
    text-align: center;
    font-size: 1.15rem;
    color: var(--gray-text);
    margin-bottom: var(--spacing-lg);
    margin-top: calc(-1 * var(--spacing-md));
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-md) 0;
}

/* 中央の縦ライン */
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom,
            #f39c12 0%,
            #3498db 20%,
            #e67e22 40%,
            #27ae60 60%,
            #9b59b6 80%,
            #2c3e50 100%);
    transform: translateX(-50%);
    border-radius: 3px;
    box-shadow: 0 0 10px rgba(155, 89, 182, 0.3);
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.timeline-item.timeline-left {
    left: 0;
    padding-right: calc(var(--spacing-md) + 20px);
    text-align: right;
}

.timeline-item.timeline-right {
    left: 50%;
    padding-left: calc(var(--spacing-md) + 20px);
    text-align: left;
}

/* タイムラインのドット */
.timeline-dot {
    position: absolute;
    top: 20px;
    width: 16px;
    height: 16px;
    background: var(--dot-color, var(--primary-color));
    border-radius: 50%;
    z-index: 2;
    box-shadow: 0 0 12px var(--dot-color, var(--primary-color)),
        0 0 24px rgba(155, 89, 182, 0.2);
    animation: dotPulse 3s ease-in-out infinite;
}

.timeline-left .timeline-dot {
    right: -8px;
}

.timeline-right .timeline-dot {
    left: -8px;
}

@keyframes dotPulse {

    0%,
    100% {
        box-shadow: 0 0 8px var(--dot-color, var(--primary-color)),
            0 0 16px rgba(155, 89, 182, 0.15);
    }

    50% {
        box-shadow: 0 0 16px var(--dot-color, var(--primary-color)),
            0 0 32px rgba(155, 89, 182, 0.3);
    }
}

/* タイムラインカード */
.timeline-card {
    background: rgba(20, 25, 55, 0.8);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid rgba(155, 89, 182, 0.15);
    border-left: 4px solid var(--card-accent, var(--primary-color));
    transition: var(--transition-smooth);
    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(5px);
}

.timeline-left .timeline-card {
    border-left: 1px solid rgba(155, 89, 182, 0.15);
    border-right: 4px solid var(--card-accent, var(--primary-color));
}

.timeline-card:hover {
    transform: translateY(-5px);
    background: rgba(25, 30, 65, 0.9);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3),
        0 0 15px rgba(155, 89, 182, 0.15);
}

.timeline-time {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
    font-family: var(--font-primary);
}

.timeline-emoji {
    font-size: 1.4rem;
}

.timeline-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--light-text), var(--gray-text));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.timeline-card p {
    color: var(--gray-text);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ==========================================
   特徴セクション
   ==========================================*/

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: rgba(52, 152, 219, 0.1);
    padding: var(--spacing-md);
    border-radius: 15px;
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid rgba(52, 152, 219, 0.3);
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(52, 152, 219, 0.2);
    border-color: var(--secondary-color);
    box-shadow: 0 15px 50px rgba(52, 152, 219, 0.3);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
    transition: var(--transition-fast);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--gray-text);
}

/* ==========================================
   コンタクトセクション
   ========================================== */
.contact {
    background: rgba(15, 20, 45, 0.5);
}

.contact-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-description {
    font-size: 1.2rem;
    color: var(--gray-text);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.social-link {
    width: 60px;
    height: 60px;
    background: rgba(155, 89, 182, 0.1);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.5rem;
    transition: var(--transition-fast);
    text-decoration: none;
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-5px) rotate(360deg);
    box-shadow: 0 10px 30px rgba(155, 89, 182, 0.5);
}

/* ==========================================
   フッター
   ========================================== */
.footer {
    background: rgba(5, 8, 18, 0.95);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(155, 89, 182, 0.3);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.footer-logo i {
    font-size: 2rem;
}

.footer-text {
    color: var(--gray-text);
    margin-bottom: 0.5rem;
}

.footer-subtitle {
    color: var(--accent-blue);
    font-size: 0.9rem;
}

/* ==========================================
   ヘルプボタンとモーダル
   ========================================== */
.help-button {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    z-index: 9999;
    box-shadow: 0 5px 20px rgba(155, 89, 182, 0.5);
    transition: var(--transition-fast);
    animation: helpPulse 2s ease-in-out infinite;
}

.help-button:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 8px 30px rgba(155, 89, 182, 0.7);
}

@keyframes helpPulse {

    0%,
    100% {
        box-shadow: 0 5px 20px rgba(155, 89, 182, 0.5);
    }

    50% {
        box-shadow: 0 5px 30px rgba(155, 89, 182, 0.8), 0 0 0 10px rgba(155, 89, 182, 0.1);
    }
}

.help-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10001;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.help-modal.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.help-content {
    background: linear-gradient(135deg, rgba(15, 20, 45, 0.95), rgba(10, 14, 39, 0.95));
    border-radius: 20px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(155, 89, 182, 0.5);
    border: 2px solid rgba(155, 89, 182, 0.5);
    animation: modalSlideIn 0.4s ease-out;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.help-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(155, 89, 182, 0.3);
}

.help-header h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin: 0;
}

.help-close {
    background: transparent;
    border: none;
    color: var(--gray-text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.help-close:hover {
    color: var(--primary-color);
    background: rgba(155, 89, 182, 0.2);
    transform: rotate(90deg);
}

.help-body {
    padding: var(--spacing-md);
}

.help-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background: rgba(155, 89, 182, 0.1);
    border-radius: 10px;
    border-left: 4px solid var(--secondary-color);
    transition: var(--transition-fast);
}

.help-item:hover {
    background: rgba(155, 89, 182, 0.2);
    transform: translateX(10px);
}

.help-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.help-text strong {
    display: block;
    color: var(--secondary-color);
    margin-bottom: 0.3rem;
    font-size: 1.1rem;
}

.help-text p {
    color: var(--gray-text);
    margin: 0;
    line-height: 1.6;
}

/* ==========================================
   レスポンシブデザイン
   ========================================== */
@media (max-width: 968px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    .moon-container {
        top: 10%;
        right: 5%;
    }

    .moon {
        width: 100px;
        height: 100px;
    }

    /* タイムラインレスポンシブ */
    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 50px !important;
        padding-right: var(--spacing-sm) !important;
        margin-bottom: 1.2rem;
        text-align: left !important;
    }

    .timeline-card {
        padding: 1rem;
    }

    .timeline-item.timeline-left,
    .timeline-item.timeline-right {
        left: 0;
    }

    .timeline-dot {
        left: 12px !important;
        right: auto !important;
    }

    .timeline-left .timeline-card {
        border-left: 4px solid var(--card-accent, var(--primary-color));
        border-right: 1px solid rgba(155, 89, 182, 0.15);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2.5rem;
    }

    section {
        padding: var(--spacing-xl) 0;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 250px;
        height: calc(100vh - 70px);
        background: rgba(10, 14, 39, 0.98);
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        transition: var(--transition-smooth);
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
        align-items: flex-start;
    }

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

    .nav-social {
        border-left: none;
        border-top: 2px solid rgba(155, 89, 182, 0.3);
        padding-left: 0;
        padding-top: 1rem;
        margin-left: 0;
        margin-top: 1rem;
        width: 100%;
        justify-content: center;
    }

    .nav-toggle {
        display: flex;
    }

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

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

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

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .moon-container {
        top: 5%;
        right: 50%;
        transform: translateX(50%);
    }

    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .lightbox-close {
        width: 44px;
        height: 44px;
        top: 12px;
        right: 12px;
        font-size: 1.4rem;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }

    .gallery-masonry {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
        grid-auto-rows: 220px;
        align-items: stretch;
    }

    /* モバイル: タッチ操作のためオーバーレイを控えめに常時表示 */
    .gallery-overlay {
        opacity: 1;
        background: linear-gradient(to top, rgba(10, 14, 39, 0.7) 0%, transparent 50%);
        padding: 10px;
    }

    .gallery-overlay h3 {
        font-size: 0.8rem;
        margin-bottom: 0.2rem;
    }

    .gallery-overlay p {
        font-size: 0.7rem;
    }

    .gallery-expand {
        opacity: 0.85;
        width: 30px;
        height: 30px;
        font-size: 0.75rem;
        top: 8px;
        right: 8px;
        left: auto;
        transform: none;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
    }

    .hero {
        min-height: 85vh;
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .section-title {
        flex-direction: column;
        gap: 0.5rem;
    }

    .story-content,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .story-card {
        padding: 1.25rem;
    }

    .story-card h3 {
        font-size: 1.2rem;
    }

    .story-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 0.75rem;
    }

    .story-icon i {
        font-size: 1.4rem;
    }

    .gallery-grid,
    .gallery-masonry {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
        grid-auto-rows: 160px;
    }

    .gallery-filters {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.5rem 1.2rem;
        font-size: 0.85rem;
    }

    .help-button {
        bottom: 20px;
        left: 20px;
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .help-content {
        width: 95%;
        max-height: 90vh;
    }

    .help-header h3 {
        font-size: 1.4rem;
    }

    .help-icon {
        font-size: 2rem;
    }
}
/* ==========================================
   イベント参加記録セクション
   ========================================== */
.events-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(180deg, transparent 0%, rgba(155, 89, 182, 0.05) 50%, transparent 100%);
}

.events-description {
    text-align: center;
    color: var(--gray-text);
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
}

/* フィルターボタン */
.events-filter {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.event-filter-btn {
    padding: 0.5rem 1.25rem;
    border: 1px solid rgba(155, 89, 182, 0.4);
    background: transparent;
    color: var(--gray-text);
    border-radius: 50px;
    cursor: pointer;
    font-family: var(--font-japanese);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.event-filter-btn:hover,
.event-filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* イベントグリッド */
.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.events-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--gray-text);
    font-size: 1.1rem;
}

/* イベントカード */
.event-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(155, 89, 182, 0.2);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition-fast);
    opacity: 0;
    transform: translateY(20px);
    animation: eventCardIn 0.4s ease forwards;
}

.event-card:hover {
    border-color: rgba(155, 89, 182, 0.6);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(155, 89, 182, 0.2);
}

@keyframes eventCardIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.event-card-photo {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.event-card-photo-placeholder {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.2), rgba(52, 152, 219, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.event-card-body {
    padding: 1.25rem;
}

.event-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.event-card-name {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--light-text);
    line-height: 1.4;
}

.event-type-badge {
    flex-shrink: 0;
    font-size: 0.72rem;
    padding: 0.2rem 0.6rem;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-fursuit { background: rgba(155, 89, 182, 0.3); color: #c39bd3; border: 1px solid rgba(155, 89, 182, 0.4); }
.badge-online  { background: rgba(52, 152, 219, 0.3); color: #7fb3d3; border: 1px solid rgba(52, 152, 219, 0.4); }
.badge-music   { background: rgba(231, 76,  60,  0.3); color: #e59b93; border: 1px solid rgba(231, 76, 60, 0.4); }
.badge-other   { background: rgba(149, 165, 166, 0.3); color: #aab7b8; border: 1px solid rgba(149, 165, 166, 0.4); }

.event-card-meta {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 0.75rem;
}

.event-card-meta span {
    font-size: 0.85rem;
    color: var(--gray-text);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.event-card-meta i {
    color: var(--primary-color);
    width: 14px;
}

.event-card-comment {
    font-size: 0.9rem;
    color: var(--gray-text);
    line-height: 1.6;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 0.75rem;
    margin-top: 0.5rem;
}

.events-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--gray-text);
}

.events-empty i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    opacity: 0.5;
}

@media (max-width: 768px) {
    .events-grid {
        grid-template-columns: 1fr;
    }
}