/* Global Reset & Base Styles */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;700&family=Shippori+Mincho:wght@400;700&display=swap');

:root {
    /* Hardcore & Tech Palette */
    --bg-color: #121212;       /* Deep Blue-Black */
    --text-color: #FFFFFF;     /* Pure White */
    --accent-color: #00F2FF;   /* Neon Blue */
    --border-color: #2C2C2E;   /* Slate Gray */
    
    --font-title: 'Noto Serif JP', serif;
    --font-body: 'Shippori Mincho', serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
    min-height: 100vh;
    /* Traditional Paper Texture */
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.5' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100' height='100' filter='url(%23noise)' opacity='0.05'/%3E%3C/svg%3E");
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

#adv1 {
    margin-top: 0px !important;
}

/* Navbar - Traditional Style */
.navbar {
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--bg-color);
    border-bottom: 4px solid var(--accent-color);
    padding: 1rem 0;
    box-shadow: 0 4px 15px rgba(0, 242, 255, 0.2);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-family: var(--font-title);
    font-size: 1.8rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 0 10px var(--accent-color);
    border: 2px solid var(--accent-color);
    padding: 5px 15px;
    border-radius: 4px;
    background: transparent;
}

.logo a {
    text-decoration: none;
    color: inherit;
    display: block;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--jp-paper);
    text-decoration: none;
    font-family: var(--font-title);
    font-size: 1rem;
    text-transform: uppercase;
    position: relative;
    padding: 5px 10px;
    transition: color 0.3s;
}

.nav-links a::before {
    content: '✿';
    position: absolute;
    left: -15px;
    top: 50%;
    transform: translateY(-50%) scale(0);
    color: var(--jp-vermilion); /* Sakura color */
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.nav-links a:hover {
    color: var(--jp-gold);
}

.nav-links a:hover::before {
    transform: translateY(-50%) scale(1);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: var(--jp-paper);
}

/* Hero Section */
.hero {
    margin-top: 80px;
    text-align: center;
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
    background: var(--jp-beige);
    border-bottom: 2px solid var(--jp-indigo);
}

/* Japanese Pattern Background for Hero */
.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(var(--jp-gold) 15%, transparent 16%),
        radial-gradient(var(--jp-gold) 15%, transparent 16%);
    background-size: 60px 60px;
    background-position: 0 0, 30px 30px;
    opacity: 0.1;
    z-index: 1;
}

.hero h2 {
    font-family: var(--font-title);
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--jp-vermilion);
    text-shadow: 2px 2px 0px var(--jp-dark);
    position: relative;
    z-index: 3;
    letter-spacing: 5px;
}

.hero p {
    font-family: var(--font-body);
    font-size: 1.2rem;
    color: var(--jp-dark);
    max-width: 700px;
    margin: 0 auto;
    background: rgba(255, 251, 240, 0.9);
    padding: 20px;
    border: 1px solid var(--jp-indigo);
    position: relative;
    z-index: 3;
    box-shadow: 5px 5px 15px rgba(0,0,0,0.1);
    line-height: 1.8;
}

/* Filter Bar */
.filter-bar-container {
    margin: 3rem 0;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 15px;
    text-align: center;
    /* Custom Scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--jp-indigo) var(--jp-beige);
}

.filter-bar-container::-webkit-scrollbar {
    height: 6px;
}
.filter-bar-container::-webkit-scrollbar-track {
    background: var(--jp-beige);
}
.filter-bar-container::-webkit-scrollbar-thumb {
    background-color: var(--jp-indigo);
    border-radius: 3px;
}

.filter-bar {
    display: inline-flex;
    gap: 15px;
    justify-content: center;
    padding: 0 20px;
}

.filter-btn {
    background: var(--jp-paper);
    border: 1px solid var(--jp-indigo);
    color: var(--jp-indigo);
    padding: 10px 25px;
    font-family: var(--font-title);
    font-size: 0.9rem;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.3s;
    border-radius: 2px;
    position: relative;
    z-index: 1;
}

.filter-btn:hover {
    background: var(--jp-indigo);
    color: var(--jp-paper);
}

.filter-btn.active {
    background: var(--jp-indigo) !important;
    color: var(--jp-paper) !important;
    border-color: var(--jp-indigo) !important;
    box-shadow: 0 4px 10px rgba(46, 75, 113, 0.3);
}

/* Waterfall Layout */
.waterfall-grid {
    column-count: 4;
    column-gap: 25px;
    padding: 20px 0;
}

/* Game Card - Traditional Style */
.game-card {
    break-inside: avoid;
    background: var(--jp-paper);
    border: 1px solid #ddd;
    margin-bottom: 25px;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    transition: all 0.4s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    position: relative;
    overflow: hidden;
    border-radius: 2px;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--jp-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s;
    z-index: 2;
}

.game-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.game-card:hover::before {
    transform: scaleX(1);
}

.card-img-wrapper {
    position: relative;
    overflow: hidden;
    padding-top: 60%; /* Aspect ratio placeholder */
    background: #eee;
}

.game-card img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.game-card-content {
    padding: 20px;
    border-top: 1px solid #eee;
}

.game-card h4 {
    font-family: var(--font-title);
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--jp-dark);
    line-height: 1.4;
    font-weight: 700;
}

.game-tag {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--jp-matcha);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 1px solid var(--jp-matcha);
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
}

.game-card-info {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: #ffffff;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
}

/* Responsive Grid */
@media (max-width: 1200px) {
    .waterfall-grid {
        column-count: 3;
    }
}

@media (max-width: 900px) {
    .waterfall-grid {
        column-count: 2;
    }
    .hero h2 {
        font-size: 2.5rem;
    }
}

@media (max-width: 600px) {
    .waterfall-grid {
        column-count: 1;
    }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: var(--jp-indigo);
        text-align: center;
        padding: 2rem 0;
        border-bottom: 2px solid var(--jp-gold);
    }
    .nav-links.active {
        display: flex;
    }
    .hamburger {
        display: block;
    }
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .filter-bar-container {
        padding: 0 10px;
    }
    
    .filter-bar {
        justify-content: flex-start;
    }
}

/* Detail Page Styles */
.game-detail {
    padding: 20px;
    border: 2px solid var(--jp-indigo);
    background: var(--jp-paper);
    margin: 0px auto 40px;
    max-width: 900px;
}

.game-detail-info {
    padding: 0;
    border: 1px solid var(--jp-indigo);
}

.game-detail-info h2 {
    font-family: var(--font-title);
    font-size: 2rem;
    color: var(--jp-indigo);
    margin: 20px auto;
    border-bottom: 2px solid var(--jp-vermilion);
    display: block;
    width: fit-content;
    padding-bottom: 10px;
}

.game-detail-image {
    max-width: 800px;
    margin: 0 auto 40px;
    border: 8px solid var(--jp-paper);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    position: relative;
}

.game-detail-image::after {
    content: '';
    position: absolute;
    top: -15px;
    right: -15px;
    bottom: -15px;
    left: -15px;
    border: 2px solid var(--jp-gold);
    z-index: -1;
}

.game-detail-image img {
    width: 100%;
    display: block;
}

.game-detail-info p {
    font-family: var(--font-body);
    font-size: 1.1rem;
    line-height: 2;
    max-width: 800px;
    margin: 0 auto 20px;
    background: var(--jp-paper);
    padding: 30px;
    border-top: 1px solid var(--jp-indigo); /* 与上方内容区分 */
    border-left: 4px solid var(--jp-vermilion);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.may-like {
    padding: 60px 0;
    border-top: 1px solid #ddd;
    margin-top: 60px;
    background: rgba(255,255,255,0.3);
}

.may-like h3 {
    font-family: var(--font-title);
    font-size: 1.5rem;
    color: var(--jp-dark);
    margin-bottom: 40px;
    text-align: center;
    text-transform: uppercase;
    position: relative;
}

.may-like h3::after {
    content: '✿';
    display: block;
    color: var(--jp-vermilion);
    margin-top: 10px;
    font-size: 1.2rem;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
}

/* Footer */
.footer {
    background: var(--jp-dark);
    border-top: 4px solid var(--jp-gold);
    padding: 3rem 0;
    margin-top: 60px;
    color: #ccc;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer p {
    font-family: var(--font-body);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--jp-gold);
}

/* Buttons */
.back-button {
    display: inline-block;
    margin-top: 120px;
    margin-bottom: 20px;
    color: var(--jp-indigo);
    text-decoration: none;
    font-family: var(--font-title);
    font-size: 0.9rem;
    background: transparent;
    padding: 8px 20px;
    border: 1px solid var(--jp-indigo);
    transition: all 0.3s;
    border-radius: 2px;
}

.back-button:hover {
    background: var(--jp-indigo);
    color: var(--jp-paper);
}

/* Play Button */
.play-button-wrapper {
    text-align: center;
    margin: 40px 0;
}

.play-btn {
    font-family: var(--font-title);
    background-color: var(--jp-vermilion);
    color: var(--jp-paper);
    border: none;
    padding: 15px 40px;
    font-size: 1rem;
    cursor: pointer;
    text-transform: uppercase;
    box-shadow: 0 4px 0 #bf4025;
    transition: all 0.2s;
    border-radius: 4px;
    letter-spacing: 2px;
}

.play-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 0 #bf4025;
    background-color: #ff7355;
}

.play-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 #bf4025;
}

/* Game Iframe Overlay */
.game-iframe-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
    z-index: 9999;
}

.game-iframe-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Close button for iframe */
.close-iframe-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--jp-vermilion);
    color: white;
    border: 2px solid white;
    font-family: sans-serif;
    font-size: 24px;
    width: 50px;
    height: 50px;
    line-height: 46px;
    text-align: center;
    cursor: pointer;
    z-index: 10000;
    border-radius: 50%;
    transition: all 0.3s;
}

.close-iframe-btn:hover {
    background: white;
    color: var(--jp-vermilion);
    transform: rotate(90deg);
}

/* Policy & Text Pages */
.policy-content h1, .contact-content h1, .about-content h1 {
    font-family: var(--font-title);
    font-size: 2.5rem;
    color: var(--jp-indigo);
    margin-bottom: 2rem;
    text-align: center;
    border-bottom: 1px solid #ddd;
    padding-bottom: 1rem;
}

.policy-content h2, .contact-content h2, .about-content h2 {
    font-family: var(--font-title);
    font-size: 1.5rem;
    color: var(--jp-dark);
    margin-top: 2rem;
    margin-bottom: 1rem;
    border-left: 4px solid var(--jp-gold);
    padding-left: 10px;
}

.policy-content p, .contact-content p, .about-content p, .policy-content li, .contact-content li, .about-content li {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.8;
    color: #444;
    margin-bottom: 1rem;
}

.policy-content ul, .contact-content ul, .about-content ul {
    margin-left: 20px;
    margin-bottom: 1rem;
}

.contact-info {
    background: var(--jp-paper);
    padding: 30px;
    border: 1px solid var(--jp-indigo);
    margin-top: 2rem;
    text-align: center;
}

.contact-email {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--jp-vermilion);
}