@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;700;900&display=swap');

    :root {
        --bg-primary: #0a0a0a;
        --bg-secondary: #1a1a1a;
        --text-primary: #ffffff;
        --text-secondary: #cccccc;
        --accent-primary: #dc2626;
        --accent-secondary: #991b1b;
        --border-color: #333333;
    }

    body {
        font-family: 'Noto Sans JP', sans-serif;
        background-color: var(--bg-primary);
        color: var(--text-primary);
        transition: all 0.3s ease;
        padding-bottom: 70px; /* Always account for mobile nav space */
    }

    .bg-primary {
        background-color: var(--bg-primary);
    }

    .bg-secondary {
        background-color: var(--bg-secondary);
    }

    .text-primary {
        color: var(--text-primary);
    }

    .text-secondary {
        color: var(--text-secondary);
    }

    .border-custom {
        border-color: var(--border-color);
    }

    .accent-primary {
        color: var(--accent-primary);
    }

    .bg-accent {
        background-color: var(--accent-primary);
    }

    .bg-accent-hover:hover {
        background-color: var(--accent-secondary);
    }

    .game-card {
        background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(220, 38, 38, 0.1) 100%);
        border: 2px solid var(--border-color);
        transition: all 0.3s ease;
    }

    .game-card:hover, .game-card.selected-item, .game-card:focus {
        border-color: var(--accent-primary);
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(220, 38, 38, 0.3);
        outline: none;
    }

    .game-logo {
        width: 100%;
        height: auto;
        max-width: 300px;
        aspect-ratio: 902/439;
        object-fit: contain;
        margin: 0 auto;
    }

    .character-card {
        background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(220, 38, 38, 0.05) 100%);
        border: 1px solid var(--border-color);
        transition: all 0.3s ease;
    }

    .character-card:hover, .character-card.selected-item, .character-card:focus {
        border-color: var(--accent-primary);
        transform: scale(1.02);
        outline: none;
    }
    #rank {
        display: none;
    }

    .substory-item {
        background-color: var(--bg-secondary);
        border-left: 4px solid var(--border-color);
        transition: all 0.3s ease;
    }

    .substory-item:hover, .substory-item.selected-item, .substory-item:focus {
        background: linear-gradient(90deg, var(--bg-secondary) 0%, rgba(220, 38, 38, 0.1) 100%);
        border-left-color: var(--accent-primary);
        outline: none;
    }

    .japanese-text {
        font-weight: 700;
        letter-spacing: 2px;
    }

    .fade-in {
        animation: fadeIn 0.5s ease-in;
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(20px);
        }

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

    .btn-primary {
        background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
        transition: all 0.3s ease;
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(220, 38, 38, 0.4);
    }

    /* Guide formatting */
    #substoryGuide {
        white-space: pre-line;
        line-height: 1.6;
    }

    #substoryGuide br {
        display: block;
        content: "";
        margin-bottom: 0.5rem;
    }

    .character-image {
        border-radius: 8px;
        border: 2px solid var(--accent-primary);
        transition: transform 0.2s ease;
    }

    .character-card:hover .character-image {
        transform: scale(1.03);
        border-color: var(--accent-secondary);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }

    /* Character grid adjustments */
    #charactersGrid {
        justify-items: center;
    }

    /* Single character case */
    .character-card.single-character {
        width: 80%;
        max-width: 400px;
        margin: 0 auto;
    }

    /* Dynamic image sizing */
    .character-image {
        object-fit: cover;
        border-radius: 8px;
        border: 2px solid var(--accent-primary);
        transition: transform 0.2s ease;
    }

    .character-card:hover .character-image {
        transform: scale(1.05);
        border-color: var(--accent-secondary);
    }

    /* Home button hover effect */
    .home-btn {
        transition: all 0.2s ease;
    }

    .home-btn:hover {
        transform: scale(1.05);
        text-shadow: 0 0 10px rgba(220, 38, 38, 0.7);
        cursor: pointer;
    }

    /* Mobile navigation bar */
    .mobile-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background-color: var(--bg-secondary);
        border-top: 1px solid var(--border-color);
        display: flex;
        justify-content: space-around;
        padding: 10px 0;
        z-index: 100;
    }

    .mobile-nav-btn {
        display: flex;
        flex-direction: column;
        align-items: center;
        color: var(--text-primary);
        font-size: 0.8rem;
        padding: 5px 10px;
        border-radius: 8px;
        transition: all 0.2s ease;
    }

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

    .mobile-nav-btn i {
        font-size: 1.2rem;
        margin-bottom: 3px;
    }

    /* Header adjustments for mobile centering */
    header .container {
        width: 100%;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    header .flex {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    @media (min-width: 768px) {
        header .container {
            flex-direction: row;
            justify-content: space-between;
            text-align: left;
        }
        
        header .flex {
            flex-direction: row;
            justify-content: flex-start;
            width: auto;
        }
        
        #homeBtn {
            margin-bottom: 0;
        }
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
        .game-logo {
            max-width: 200px;
        }
        
        #gamesGrid {
            grid-template-columns: 1fr !important;
            gap: 1rem !important;
        }
        
        #charactersGrid {
            grid-template-columns: 1fr 1fr !important;
            gap: 1rem !important;
        }
        
        .character-card {
            height: auto !important;
            padding: 1rem !important;
        }
        
        .character-image {
            height: 120px !important;
        }
        
        header {
            padding: 1rem;
        }
        
        main {
            padding: 1rem;
        }
        
        /* Mobile-specific header adjustments */
        header .flex {
            margin-bottom: 0.5rem;
        }
        
        .mobile-nav-btn {
            padding: 5px 8px;
            font-size: 0.7rem;
        }
        
        .mobile-nav-btn i {
            font-size: 1rem;
        }
    }

    @media (max-width: 480px) {
        #charactersGrid {
            grid-template-columns: 1fr !important;
        }
        
        .home-btn {
            font-size: 1.5rem;
        }
    }