:root {
    --bg-dark: #0a0b10;
    --bg-card: #13151d;
    --primary: #8a2be2;
    --primary-glow: rgba(138, 43, 226, 0.6);
    --secondary: #00d4ff;
    --accent: #ff0055;
    --text-main: #ffffff;
    --text-muted: #a0a0b0;
    --border-color: #2a2d3d;
    --font-main: 'Noto Sans JP', sans-serif;
    --font-display: 'Orbitron', sans-serif;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --glow-text: 0 0 10px var(--primary-glow);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(42, 45, 61, 0.2) 1px, transparent 1px),
        linear-gradient(90deg, rgba(42, 45, 61, 0.2) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -2;
    pointer-events: none;
}

.bg-glow {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80vw;
    height: 80vh;
    background: radial-gradient(circle, rgba(138, 43, 226, 0.15) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

.fixed-revenue-counter {
    position: fixed;
    top: 20px;
    left: 20px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 165, 0, 0.2));
    border: 2px solid #ffd700;
    border-radius: 12px;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
    z-index: 1000;
    backdrop-filter: blur(10px);
    animation: pulse 2s ease-in-out infinite;
}

.revenue-icon {
    font-size: 2.5rem;
    animation: bounce 2s ease-in-out infinite;
}

.revenue-info {
    display: flex;
    flex-direction: column;
}

.revenue-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.revenue-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: #ffd700;
    font-weight: 700;
    text-shadow: 0 0 15px rgba(255, 215, 0, 0.6);
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
    }

    50% {
        box-shadow: 0 6px 30px rgba(255, 215, 0, 0.8);
    }
}

@keyframes bounce {

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

    50% {
        transform: translateY(-5px);
    }
}

.app-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
}

.site-header {
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.content-wrapper {
    display: block;
    flex: 1;
}

#main-content {
    width: 100%;
}

.logo {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 2px;
    text-shadow: var(--glow-text);
}

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

.screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    opacity: 1;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.screen.hidden {
    display: none;
    opacity: 0;
    transform: translateY(20px);
}

.screen.active {
    display: flex;
    animation: fadeIn 0.5s forwards;
}

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

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

.menu-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.menu-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.menu-subtitle {
    color: var(--text-muted);
}

.quiz-menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    width: 100%;
}

.quiz-card {
    background-color: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.quiz-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 8px 24px var(--primary-glow);
}

.quiz-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.quiz-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-main);
}

.quiz-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: var(--font-main);
    font-weight: 700;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px var(--primary-glow);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.8rem 2rem;
    border-radius: 50px;
}

.btn-secondary:hover {
    border-color: var(--text-main);
    color: var(--text-main);
}

.btn-accent {
    background-color: var(--accent);
    color: white;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(255, 0, 85, 0.4);
}

.progress-bar-container {
    width: 100%;
    height: 6px;
    background-color: var(--border-color);
    border-radius: 3px;
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    width: 0%;
    transition: width 0.3s ease;
}

.question-container {
    width: 100%;
    background-color: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
}

.question-number {
    font-family: var(--font-display);
    color: var(--secondary);
    font-size: 0.9rem;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.question-text {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

.options-grid {
    display: grid;
    gap: var(--spacing-md);
}

.option-btn {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    padding: 1rem;
    border-radius: 8px;
    text-align: left;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.option-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    transform: translateX(5px);
}

.loader-content {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.scanner {
    width: 80px;
    height: 80px;
    border: 4px solid var(--border-color);
    border-top-color: var(--secondary);
    border-radius: 50%;
    margin: 0 auto var(--spacing-lg);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.result-card {
    background-color: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    width: 100%;
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.result-body {
    margin-bottom: 2rem;
}

.result-label {
    font-family: var(--font-display);
    color: var(--accent);
    font-size: 0.8rem;
    letter-spacing: 2px;
}

.result-title {
    font-size: 2rem;
    margin: var(--spacing-sm) 0 var(--spacing-lg);
    background: linear-gradient(90deg, #fff, var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.result-image-placeholder {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary), #4a00e0);
    border-radius: 50%;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    box-shadow: 0 0 30px var(--primary-glow);
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    background-color: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-md);
    border-radius: 8px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.stat-value {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--secondary);
}

.recommendations {
    text-align: left;
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-lg);
}

.recommendations h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
}

.game-list {
    list-style: none;
    content: '★';
    color: var(--accent);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.site-footer {
    text-align: center;
    margin-top: auto;
    padding-top: var(--spacing-xl);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.ad-sidebar {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 300px;
    z-index: 100;
}

.ad-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-card);
}

.ad-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.ad-placeholder {
    background: rgba(138, 43, 226, 0.1);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    width: 300px;
    height: 600px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.ad-placeholder p {
    margin: 0;
    color: var(--text-muted);
}

@media (max-width: 1350px) {
    .ad-sidebar {
        position: static;
        width: 100%;
        transform: none;
        margin-top: var(--spacing-xl);
        display: flex;
        justify-content: center;
    }

    .ad-container {
        width: auto;
        display: inline-block;
    }
}

@media (max-width: 480px) {
    .quiz-menu-grid {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
    }

    .fixed-revenue-counter {
        padding: 0.75rem 1rem;
    }

    .revenue-icon {
        font-size: 2rem;
    }

    .revenue-value {
        font-size: 1.2rem;
    }
}