:root {
    --urushi-black: #050505;
    --urushi-dark: #151515;
    --urushi-red: #C22026; /* 朱色 */
    --urushi-gold: #D4AF37; /* 金箔 */
    --text-color: #F0F0F0;
    --font-kanji: 'Noto Serif JP', serif;
    --font-romaji: 'Outfit', sans-serif;
}

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

body {
    background-color: var(--urushi-black);
    color: var(--text-color);
    font-family: var(--font-kanji);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
}

/* 漆塗りの光沢をシミュレートする背景エフェクト */
.urushi-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(25,25,25,1) 0%, rgba(3,3,3,1) 70%);
    pointer-events: none;
    z-index: -1;
}
.urushi-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.02) 0%, rgba(0,0,0,0) 40%, rgba(255,255,255,0.01) 80%);
}

.container {
    width: 100%;
    max-width: 1200px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo-section {
    text-align: center;
    margin-top: 5rem;
    margin-bottom: 7rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

/* ロゴ下部の朱色の装飾線 */
.logo-section::after {
    content: '';
    position: absolute;
    bottom: -25px;
    width: 80px;
    height: 3px;
    background-color: var(--urushi-red);
    box-shadow: 0 0 15px rgba(194,32,38,0.4);
    border-radius: 2px;
}

.romaji {
    font-family: var(--font-romaji);
    font-size: 1.1rem;
    font-weight: 300;
    letter-spacing: 0.6em;
    margin-right: -0.6em; /* letter-spacingの調整 */
    color: var(--urushi-gold);
    opacity: 0.85;
    margin-bottom: 0.8rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
}

.kanji {
    font-family: var(--font-kanji);
    font-size: 4.5rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    margin-right: -0.15em;
    color: #F8F8F8;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.9), 0 0 1px rgba(255,255,255,0.2);
}

/* ゲームセクション */
.games-section {
    width: 100%;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2.5rem;
}

.game-card {
    text-decoration: none;
    color: inherit;
    display: block;
    width: 100%;
    max-width: 380px;
    perspective: 1000px;
}

.card-inner {
    background-color: var(--urushi-dark);
    border: 1px solid rgba(255,255,255,0.03);
    border-left: 4px solid var(--urushi-red);
    border-radius: 4px;
    padding: 2.5rem;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 10px 30px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.03);
    position: relative;
    overflow: hidden;
    transform: translateZ(0); /* ハードウェアアクセラレーション */
}

/* ホバー時の漆光沢エフェクト */
.card-inner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -100%;
    width: 60%;
    height: 200%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.03) 50%, rgba(255,255,255,0) 100%);
    transform: rotate(30deg);
    transition: all 0.7s ease;
}

.game-card:hover .card-inner {
    transform: translateY(-8px);
    border-left: 4px solid var(--urushi-gold);
    border-color: rgba(255,255,255,0.06);
    box-shadow: 0 20px 40px rgba(0,0,0,0.8), inset 0 1px 0 rgba(255,255,255,0.08);
}

.game-card:hover .card-inner::before {
    left: 200%;
}

.card-header {
    margin-bottom: 1.5rem;
}

.game-tag {
    font-family: var(--font-romaji);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--urushi-black);
    background-color: var(--urushi-gold);
    padding: 0.3rem 0.8rem;
    border-radius: 2px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

.card-body h2 {
    font-family: var(--font-romaji);
    font-size: 1.7rem;
    margin-bottom: 0.8rem;
    color: #fff;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.card-body p {
    font-size: 0.95rem;
    color: #aaa;
    line-height: 1.7;
}

.card-footer {
    margin-top: 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-romaji);
    color: var(--urushi-red);
    transition: color 0.3s ease;
}

.game-card:hover .card-footer {
    color: var(--urushi-gold);
}

.play-text {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.15em;
}

.arrow-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.game-card:hover .arrow-icon {
    transform: translateX(8px);
}