:root {
    --primary-color: #00BFFF; /* Deep Sky Blue */
    --secondary-color: #1DA1F2; /* Twitter Blue */
    --accent-color: #4682B4; /* Steel Blue */
    --text-main: #002b5e; /* Deep navy blue for text, perfectly matches screenshot */
    --text-light: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.7); /* Slightly more transparent for water feel */
    --glass-border: rgba(255, 255, 255, 0.6);
}

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

html, body {
    margin: 0;
    padding: 0;
    min-height: 100%;
}

body {
    /* Thick rounded font for body text */
    font-family: 'M PLUS Rounded 1c', sans-serif;
    font-weight: 700;
    /* Perfect clear water blue gradient matching the screenshot */
    background: linear-gradient(135deg, #d4f0ff 0%, #7aceff 100%);
    background-attachment: fixed;
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

/* VTuber Pop Font for Headers */
h1, h2, h3, h4, .tab-btn, .site-title, .modal-title {
    font-family: 'Mochiy Pop P One', sans-serif;
    letter-spacing: 1px;
}

/* Japanese Wave (Seigaiha) Fade Overlay */
.seigaiha-bg {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100vw;
    height: 70vh; /* Fades up to about the middle of the screen */
    z-index: -2; /* Behind the bubbles */
    pointer-events: none;
    background-color: #7aceff; /* Matches the bottom of the body gradient perfectly */
    background-image:  
        radial-gradient(circle at 100% 150%, #7aceff 24%, rgba(255,255,255,0.7) 24%, rgba(255,255,255,0.7) 28%, #7aceff 28%, #7aceff 36%, rgba(255,255,255,0.7) 36%, rgba(255,255,255,0.7) 40%, transparent 40%, transparent), 
        radial-gradient(circle at 0    150%, #7aceff 24%, rgba(255,255,255,0.7) 24%, rgba(255,255,255,0.7) 28%, #7aceff 28%, #7aceff 36%, rgba(255,255,255,0.7) 36%, rgba(255,255,255,0.7) 40%, transparent 40%, transparent), 
        radial-gradient(circle at 50%  100%, rgba(255,255,255,0.7) 10%, #7aceff 10%, #7aceff 23%, rgba(255,255,255,0.7) 23%, rgba(255,255,255,0.7) 30%, #7aceff 30%, #7aceff 43%, rgba(255,255,255,0.7) 43%, rgba(255,255,255,0.7) 50%, #7aceff 50%, #7aceff 63%, rgba(255,255,255,0.7) 63%, rgba(255,255,255,0.7) 71%, transparent 71%, transparent), 
        radial-gradient(circle at 100% 50%, rgba(255,255,255,0.7) 5%, #7aceff 5%, #7aceff 15%, rgba(255,255,255,0.7) 15%, rgba(255,255,255,0.7) 20%, #7aceff 20%, #7aceff 30%, rgba(255,255,255,0.7) 30%, rgba(255,255,255,0.7) 35%, #7aceff 35%, #7aceff 45%, rgba(255,255,255,0.7) 45%, rgba(255,255,255,0.7) 49%, transparent 49%, transparent), 
        radial-gradient(circle at 0    50%, rgba(255,255,255,0.7) 5%, #7aceff 5%, #7aceff 15%, rgba(255,255,255,0.7) 15%, rgba(255,255,255,0.7) 20%, #7aceff 20%, #7aceff 30%, rgba(255,255,255,0.7) 30%, rgba(255,255,255,0.7) 35%, #7aceff 35%, #7aceff 45%, rgba(255,255,255,0.7) 45%, rgba(255,255,255,0.7) 49%, transparent 49%, transparent);
    background-size: 80px 40px; /* Slightly smaller for a delicate look */
    
    /* Fade out towards the top */
    -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    mask-image: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
}

/* Background Animation */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.bubble {
    position: absolute;
    bottom: -50px;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.4));
    border-radius: 50%;
    animation: floatUp 15s infinite ease-in;
    opacity: 0.8;
}

.bubble:nth-child(1) { width: 40px; height: 40px; left: 10%; animation-duration: 12s; }
.bubble:nth-child(2) { width: 20px; height: 20px; left: 30%; animation-duration: 8s; animation-delay: 2s; }
.bubble:nth-child(3) { width: 60px; height: 60px; left: 70%; animation-duration: 18s; animation-delay: 5s; }
.bubble:nth-child(4) { width: 30px; height: 30px; left: 85%; animation-duration: 14s; animation-delay: 1s; }
.bubble:nth-child(5) { width: 50px; height: 50px; left: 50%; animation-duration: 16s; animation-delay: 8s; }

@keyframes floatUp {
    0% { transform: translateY(0) scale(1); opacity: 0; }
    10% { opacity: 0.8; }
    90% { opacity: 0.4; }
    100% { transform: translateY(-100vh) scale(1.5); opacity: 0; }
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 45vh; /* Allow it to expand for the massive wings */
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow: hidden;
    padding-top: 80px; /* Push the title down so it's not cut off */
    padding-bottom: 80px;
}

.hero-content {
    z-index: 2;
}

.site-title {
    font-size: 3.5rem;
    color: var(--text-main);
    letter-spacing: 2px;
    margin-bottom: 10px;
    padding: 10px; 
    line-height: 1.4;
}

/* VTuber Style Logo */
.main-logo-wrapper {
    position: relative;
    display: inline-block;
    margin: 0 20px;
}

.header-logo-image {
    display: block;
    width: min(540px, 78vw);
    height: auto;
    margin: 0 auto;
    filter: drop-shadow(0 8px 10px rgba(0, 43, 94, 0.18));
}

@media (max-width: 600px) {
    .header-logo-image {
        width: min(390px, 90vw);
    }

    .logo-sub-small {
        font-size: 1rem;
        margin-top: 14px;
    }

    .logo-sub-large {
        font-size: 2rem;
    }
}

.logo-sub-small {
    display: inline-block;
    margin-top: 2px;
    font-size: 1.25rem;
    font-weight: 800;
    color: #00345f;
    letter-spacing: 0.08em;
    text-shadow:
        -2px -2px 0 #fff,
         2px -2px 0 #fff,
        -2px  2px 0 #fff,
         2px  2px 0 #fff,
         0 4px 10px rgba(0, 43, 94, 0.18);
}

.logo-sub-large {
    display: inline-block;
    margin-top: 2px;
    font-size: 2.6rem;
    font-weight: 900;
    font-family: 'Mochiy Pop P One', sans-serif;
    color: #002b5e;
    letter-spacing: 0.12em;
    text-shadow:
        -3px -3px 0 #fff,
         3px -3px 0 #fff,
        -3px  3px 0 #fff,
         3px  3px 0 #fff,
         0 6px 14px rgba(0, 43, 94, 0.22);
}

.title-wrapper {
    position: relative;
    display: inline-block;
}

/* Shuriken Motif */
.shuriken-icon {
    display: inline-block;
    width: 60px;
    height: 60px;
    background: #ffffff;
    clip-path: polygon(50% 0%, 60% 40%, 100% 50%, 60% 60%, 50% 100%, 40% 60%, 0% 50%, 40% 40%);
    position: absolute;
    top: -25px;
    right: -45px; /* Flanking the top right of the "殿" */
    transform: rotate(15deg);
    filter: drop-shadow(0px 6px 8px rgba(0,0,0,0.25));
    z-index: 5;
    animation: floatShuriken 6s ease-in-out infinite;
}

@keyframes floatShuriken {
    0%, 100% { transform: rotate(15deg) translateY(0); }
    50% { transform: rotate(20deg) translateY(-10px); }
}

.shuriken-inner {
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    clip-path: polygon(50% 8%, 56% 44%, 92% 50%, 56% 56%, 50% 92%, 44% 56%, 8% 50%, 44% 44%);
    position: relative;
}

.shuriken-dot {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: #ffffff;
    border-radius: 50%;
}

.subtitle-box {
    margin-top: 2px;
    line-height: 1.3;
}

.sub-small {
    font-size: 1.3rem;
    font-weight: 700;
    opacity: 0.9;
    color: var(--text-main);
    /* 2px white outline for the subtitle */
    text-shadow: 
        -2px -2px 0 #fff,
         2px -2px 0 #fff,
        -2px  2px 0 #fff,
         2px  2px 0 #fff,
        -2px  0   0 #fff,
         2px  0   0 #fff,
         0    2px 0 #fff,
         0   -2px 0 #fff;
    font-family: 'M PLUS Rounded 1c', sans-serif;
    display: inline-block;
    margin-bottom: 5px;
}

.sub-large {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-main);
    /* Perfect VTuber Outline using text-shadow */
    text-shadow: 
        -3px -3px 0 #fff,
         3px -3px 0 #fff,
        -3px  3px 0 #fff,
         3px  3px 0 #fff,
        -3px  0   0 #fff,
         3px  0   0 #fff,
         0    3px 0 #fff,
         0   -3px 0 #fff;
    font-family: 'Mochiy Pop P One', sans-serif; /* Same pop font as the main title! */
    display: inline-block;
    letter-spacing: 2px;
}

/* Waves */
.wave-container {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 100px;
    z-index: 1;
}

.waves {
    width: 100%;
    height: 100px;
    min-height: 100px;
    max-height: 150px;
}

.parallax > use {
    animation: move-forever 25s cubic-bezier(.55,.5,.45,.5) infinite;
}
.parallax > use:nth-child(1) { animation-delay: -2s; animation-duration: 7s; }
.parallax > use:nth-child(2) { animation-delay: -3s; animation-duration: 10s; }
.parallax > use:nth-child(3) { animation-delay: -4s; animation-duration: 13s; }
.parallax > use:nth-child(4) { animation-delay: -5s; animation-duration: 20s; }

@keyframes move-forever {
    0% { transform: translate3d(-90px,0,0); }
    100% { transform: translate3d(85px,0,0); }
}

/* Main Content */
#content-area {
    max-width: 900px; /* Constrain width */
    margin: -30px auto 30px auto; /* Center with auto margins */
    padding: 0 20px;
    position: relative;
    z-index: 10;
    flex: 1 0 auto;
}

/* Glass Section */
.glass-section {
    background: linear-gradient(180deg, rgba(255,255,255,0.82), rgba(255,255,255,0.62));
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 2px solid rgba(255, 255, 255, 0.85);
    border-radius: 20px;
    box-shadow: 0 12px 30px rgba(0, 94, 160, 0.10), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
    padding: 30px;
}

/* About Notice */
.about-notice {
    max-width: 720px;
    margin: 28px auto 0;
    padding: 16px 22px;
    font-size: 0.95rem;
    line-height: 1.8;
    color: #444;
    background: rgba(255, 255, 255, 0.58);
    border: 1px solid rgba(0, 191, 255, 0.18);
    border-radius: 16px;
    text-align: center;
}

.about-notice p {
    margin-bottom: 5px;
}

.about-notice p:last-child {
    margin-bottom: 0;
}

.about-notice .r18-warning {
    color: #ff3b3b;
    font-weight: 900;
}


.glass-section,
.timeline-card,
.product-card,
.info-panel-content {
    border: 2px solid rgba(255, 255, 255, 0.85);
    box-shadow:
        0 12px 30px rgba(0, 94, 160, 0.10),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

/* Tabs Nav */
.tabs-nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 10px;
    margin-bottom: 30px;
    background: rgba(255, 255, 255, 0.7); /* Match screenshot 3 */
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.tab-btn {
    background: transparent;
    border: none;
    color: #555;
    font-size: 1.1rem;
    padding: 12px 30px;
    cursor: pointer;
    border-radius: 30px;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: rgba(135, 206, 235, 0.3);
    color: #333;
}

.tab-btn.active {
    background: linear-gradient(135deg, #00BFFF, #8EEBFF);
    color: #00345f;
    box-shadow: 0 8px 18px rgba(0, 191, 255, 0.35);
    transform: translateY(-1px);
}

/* Tab Content */
.tab-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.tab-content.active {
    position: relative;
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    animation: fadeIn 0.5s ease-out forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Profile Card */
.profile-card {
    text-align: center; /* Center the profile content */
}

.profile-card h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
    color: var(--text-main);
    border-bottom: 3px solid var(--primary-color);
    display: inline-block;
    padding-bottom: 5px;
}

.profile-card p {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 15px;
}

.link-category-title {
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5rem;
    color: var(--text-main);
}

.links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    align-items: center;
}

.link-btn {
    padding: 12px 25px;
    border-radius: 12px;
    color: white;
    text-decoration: none;
    font-family: 'Mochiy Pop P One', sans-serif;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
}

.link-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.main-link { background-color: #1DA1F2; }
.sub-link { background-color: #4682B4; }
.withny-link { background-color: #FF5FA2; }
.booth-link { background-color: #FC4D50; }
.youtube-link { background-color: #FF0000; }
.twitch-link { background-color: #9146FF; }
.twitcasting-link { background-color: #2E64FE; }
.cien-link { background-color: #F39C12; }

/* Info Panel (Accordion) */
.info-panel-wrapper {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    margin-top: 20px;
}

.info-panel-wrapper.open {
    max-height: 600px;
}

.info-panel-content {
    background: rgba(255, 255, 255, 0.9);
    padding: 20px;
    border-radius: 15px;
    border: 2px solid var(--primary-color);
    height: 100%;
}

#info-panel-text {
    white-space: pre-line;
    line-height: 1.6;
    margin-top: 10px;
    color: #333;
}

.panel-link-btn {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 20px;
    border-radius: 8px;
    color: white;
    text-decoration: none;
    font-family: 'Mochiy Pop P One', sans-serif;
}

/* Timeline */
.timeline-desc {
    margin-bottom: 20px;
    color: #555;
    text-align: center; /* Center the description */
}

/* Products */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 900px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}

.product-card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    transition: transform 0.3s, box-shadow 0.3s;
    text-decoration: none;
    color: var(--text-main);
    display: block;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 191, 255, 0.3);
}

.product-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

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

.product-info {
    padding: 15px;
}

.product-info h4 {
    font-family: 'Mochiy Pop P One', sans-serif;
    font-size: 1rem;
    margin-bottom: 5px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: #333;
}

.maker {
    font-size: 0.9rem;
    color: var(--secondary-color);
    font-weight: bold;
}

/* Footer */
footer {
    text-align: center;
    padding: 32px 20px;
    margin-top: 30px;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    flex-shrink: 0;
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.8);
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-title {
    font-family: 'Mochiy Pop P One', sans-serif;
    color: #333;
    margin-bottom: 10px;
}

.footer-disclaimers {
    margin: 15px 0;
    font-size: 0.9rem;
    color: #555;
    line-height: 1.6;
}

.r18-warning {
    color: #ff3b3b !important;
    font-weight: bold;
}

.admin-contact {
    margin-top: 15px !important;
    font-size: 0.9rem !important;
    color: #333 !important;
}

.admin-contact a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

.admin-contact a:hover {
    color: #1DA1F2;
    text-decoration: underline;
}

.copyright {
    font-size: 0.85rem;
    color: #555;
    margin-top: 10px;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    display: flex; justify-content: center; align-items: center;
    z-index: 9999;
}
.modal-overlay.hidden { display: none; }

.modal-content {
    background: white;
    padding: 40px; text-align: center; border-radius: 20px; max-width: 400px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    border: 2px solid var(--primary-color);
}

.modal-buttons {
    display: flex; gap: 20px; justify-content: center; margin-top: 20px;
}

.btn {
    padding: 10px 20px; border: none; border-radius: 8px; font-weight: bold; cursor: pointer;
    font-family: 'Mochiy Pop P One', sans-serif;
}
.btn-yes { background: var(--primary-color); color: #fff; }
.btn-no { background: #f0f0f0; color: #333; }

.modal-error {
    color: #ff3b3b; margin-top: 15px; display: none; font-weight: bold;
}

/* 活動記録 (Activity Log) */
#tab-activity h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 14px;
}

#tab-activity h2::after {
    content: "";
    display: block;
    width: 120px;
    height: 3px;
    margin: 10px auto 0;
    background: var(--primary-color);
    border-radius: 999px;
}

.activity-desc {
    display: block;
    width: fit-content;
    max-width: 100%;
    margin: 0 auto 36px;
    padding: 11px 24px;
    text-align: center;
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1.7;
    color: #00345f;
    background:
        linear-gradient(
            to bottom,
            rgba(255, 255, 255, 0.98) 0%,
            rgba(198, 246, 255, 0.9) 48%,
            rgba(78, 207, 255, 0.85) 100%
        );
    border: 2px solid rgba(255, 255, 255, 0.95);
    border-radius: 999px;
    box-shadow:
        0 8px 18px rgba(0, 191, 255, 0.18),
        inset 0 2px 0 rgba(255, 255, 255, 0.95),
        inset 0 -2px 6px rgba(0, 191, 255, 0.12);
}

.activity-year {
    font-family: 'Mochiy Pop P One', sans-serif;
    font-size: 1.5rem;
    color: var(--text-main);
    margin-top: 30px;
    margin-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
    padding-bottom: 5px;
}

.activity-month-group {
    margin-bottom: 15px;
}

.activity-month-toggle {
    width: 100%;
    text-align: left;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    font-family: 'Mochiy Pop P One', sans-serif;
    font-size: 1.1rem;
    color: #333;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s, transform 0.2s;
}

.activity-month-toggle:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
}

.activity-month-toggle::after {
    content: '▼';
    font-size: 0.8rem;
    transition: transform 0.3s;
}

.activity-month-group.open .activity-month-toggle::after {
    transform: rotate(180deg);
}

.activity-month-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 10px;
}

.activity-month-group.open .activity-month-content {
    max-height: 2000px; /* Large enough for many cards */
    padding: 15px 10px;
}

.activity-card {
    background: white;
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 15px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    border: 1px solid #f0f0f0;
    transition: transform 0.2s;
}

.activity-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.1);
}

.activity-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.activity-date {
    font-weight: bold;
    color: #666;
    font-size: 0.9rem;
}

.activity-place {
    padding: 4px 8px;
    border-radius: 6px;
    color: white;
    font-size: 0.8rem;
    font-family: 'Mochiy Pop P One', sans-serif;
}

.activity-memo {
    line-height: 1.6;
    color: #333;
    margin-bottom: 12px;
    white-space: pre-line;
}

.activity-link {
    display: inline-block;
    padding: 6px 15px;
    border-radius: 20px;
    color: white;
    text-decoration: none;
    font-size: 0.85rem;
    font-family: 'Mochiy Pop P One', sans-serif;
    transition: transform 0.2s, background-color 0.2s;
    background-color: #1DA1F2; /* Default Twitter blue */
}

.activity-link:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.activity-link-missing {
    font-size: 0.8rem;
    color: #999;
    font-style: italic;
}

.activity-link-warning {
    font-size: 0.8rem;
    color: #ffaa00;
    font-weight: bold;
}

/* Place Colors */
.place-withny { background-color: #FF5FA2; }
.place-youtube { background-color: #FF0000; }
.place-twitcasting { background-color: #2E64FE; }
.place-twitch { background-color: #9146FF; }
.place-xlive { background-color: #333333; }
.place-other { background-color: #00BFFF; }

/* Music */
.music-desc {
    text-align: center;
    color: #555;
    margin-bottom: 30px;
}

.music-card {
    background: rgba(255, 255, 255, 0.85);
    border-radius: 20px;
    padding: 30px;
    border: 2px solid rgba(255, 255, 255, 0.95);
    box-shadow: 0 10px 25px rgba(0, 94, 160, 0.08);
    max-width: 600px;
    margin: 0 auto 30px;
    text-align: center;
}

.music-label {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-color);
    color: white;
    border-radius: 6px;
    font-size: 0.8rem;
    font-family: 'Mochiy Pop P One', sans-serif;
    margin-bottom: 10px;
}

.music-title {
    font-family: 'Mochiy Pop P One', sans-serif;
    font-size: 1.5rem;
    color: var(--text-main);
    margin-bottom: 20px;
}

.youtube-embed {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 10px 24px rgba(0, 94, 160, 0.15);
    background: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.youtube-embed iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.youtube-link-btn {
    display: inline-block;
    margin-top: 18px;
    padding: 12px 24px;
    border-radius: 999px;
    background: #FF0000;
    color: #fff;
    text-decoration: none;
    font-weight: 900;
    font-family: 'Mochiy Pop P One', sans-serif;
    box-shadow: 0 8px 18px rgba(255, 0, 0, 0.22);
    transition: transform 0.2s, box-shadow 0.2s;
}

.youtube-link-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(255, 0, 0, 0.3);
}

.music-note {
    margin-top: 14px;
    font-size: 0.85rem;
    color: #666;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        min-height: 38vh;
        padding-top: 60px;
        padding-bottom: 70px;
    }

    .site-title {
        font-size: clamp(1.8rem, 8vw, 2.4rem);
        line-height: 1.35;
        padding: 0 10px;
    }

    .svg-wing {
        width: 92px;
        height: 64px;
        margin: 0 -12px;
    }

    .left-wing-svg {
        transform: translateY(10px) rotate(-8deg);
    }

    .right-wing-svg {
        transform: translateY(10px) rotate(8deg);
    }

    .shuriken-icon {
        width: 42px;
        height: 42px;
        top: -22px;
        right: -18px;
    }

    .sub-small {
        font-size: 1rem;
    }

    .sub-large {
        font-size: 1.6rem;
    }

    .tabs-nav {
        flex-direction: column;
        gap: 10px;
    }

    .tab-btn {
        width: 100%;
        text-align: center;
    }

    .timeline-container {
        flex-direction: column;
    }

    #tab-timeline h2 {
        text-align: center;
        margin-bottom: 15px;
    }

    .timeline-desc {
        text-align: center;
        margin-bottom: 25px;
    }
}

@media (max-width: 600px) {
    body {
        min-height: auto;
    }

    .seigaiha-bg {
        height: 50vh;
        opacity: 0.75;
        -webkit-mask-image: linear-gradient(
            to top,
            rgba(0,0,0,0.85) 0%,
            rgba(0,0,0,0.65) 45%,
            rgba(0,0,0,0) 100%
        );
        mask-image: linear-gradient(
            to top,
            rgba(0,0,0,0.85) 0%,
            rgba(0,0,0,0.65) 45%,
            rgba(0,0,0,0) 100%
        );
    }

    footer {
        margin-top: 24px;
        padding: 28px 20px;
    }

    #content-area {
        padding: 0 14px;
        margin-bottom: 20px;
    }

    .activity-desc {
        width: 100%;
        font-size: 0.98rem;
        padding: 10px 14px;
        margin-bottom: 28px;
        border-radius: 18px;
    }

    .about-notice {
        max-width: 100%;
        padding: 14px 16px;
        font-size: 0.9rem;
        line-height: 1.75;
    }

    .glass-section {
        padding: 22px 16px;
        border-radius: 18px;
    }

    .links {
        flex-direction: column;
        align-items: center;
    }

    .link-btn {
        width: 100%;
        max-width: 320px;
        text-align: center;
    }

    .modal-content {
        width: calc(100% - 32px);
        padding: 28px 20px;
    }

    .modal-buttons {
        flex-direction: column;
        gap: 12px;
    }
}

.news-box {
    max-width: 720px;
    margin: 0 auto 28px;
    padding: 18px 22px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 18px;
    box-shadow: 0 8px 20px rgba(0, 94, 160, 0.08);
}

.news-title {
    margin-bottom: 12px;
    font-size: 1.25rem;
    color: #00345f;
    text-align: center;
}

.news-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.news-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 10px 0;
    border-top: 1px solid rgba(0, 191, 255, 0.15);
    font-size: 0.95rem;
}

.news-item:first-child {
    border-top: none;
}

.news-date {
    font-weight: 900;
    color: #006cae;
    white-space: nowrap;
}

.news-text {
    color: #333;
    font-weight: 800;
}

@media (max-width: 600px) {
    .news-box {
        padding: 16px 14px;
    }

    .news-item {
        display: block;
        font-size: 0.9rem;
    }

    .news-date {
        display: block;
        margin-bottom: 4px;
    }
}

.product-image {
    position: relative;
}

.product-new-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 2;
    padding: 5px 10px;
    border-radius: 999px;
    background: linear-gradient(135deg, #ff5fa2, #8eebff);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 900;
    letter-spacing: 0.04em;
    box-shadow: 0 4px 10px rgba(0, 43, 94, 0.22);
    border: 2px solid rgba(255, 255, 255, 0.9);
}

@media (max-width: 600px) {
    .product-new-badge {
        top: 8px;
        left: 8px;
        font-size: 0.7rem;
        padding: 4px 9px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}