:root {
    --bg-color: #0f1115;
    --card-bg: #1a1d24;
    --card-hover: #252932;
    --primary-accent: #39ff14; /* Neon Green */
    --secondary-accent: #ff0055; /* Neon Red/Pink */
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --glow-shadow: 0 0 15px rgba(57, 255, 20, 0.3);
}

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

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

/* Background Effects */
.background-accents {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: 
        radial-gradient(circle at 10% 20%, rgba(57, 255, 20, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(255, 0, 85, 0.05) 0%, transparent 40%);
}

/* Header */
.main-header {
    text-align: center;
    padding: 4rem 1rem 2rem;
    position: relative;
}

.site-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    background: linear-gradient(135deg, #fff, var(--primary-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 20px rgba(57, 255, 20, 0.2);
    letter-spacing: 2px;
}

.site-intro {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
}

/* Main Content */
.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 3rem;
    align-items: center;
}

/* Navigation Grid */
.darts-menu {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

/* Cards */
.menu-card {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 2rem 1rem;
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    position: relative;
    overflow: hidden;
}

.menu-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--text-secondary);
    transition: 0.3s;
    opacity: 0.5;
}

.game-card::before {
    background: var(--secondary-accent);
}

.menu-card:hover {
    transform: translateY(-5px);
    background: var(--card-hover);
    box-shadow: var(--glow-shadow);
    border-color: rgba(57, 255, 20, 0.3);
}

.menu-card:hover::before {
    background: var(--primary-accent);
    opacity: 1;
    height: 6px;
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.2));
}

.card-text {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
}

/* Ads Section */
.ads-section {
    width: 100%;
    max-width: 900px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    margin-top: 2rem;
}

.ad-container {
    background: rgba(0, 0, 0, 0.2);
    padding: 1rem;
    border-radius: 8px;
    border: 1px dashed rgba(255, 255, 255, 0.1);
    width: 100%;
    min-height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

/* CSS Dartboard Element for Footer Visual */
.visual-footer {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 4rem auto;
    opacity: 0.8;
}

.dartboard-css {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: #000;
    position: relative;
    border: 10px solid #1a1d24;
    box-shadow: 0 0 30px rgba(0,0,0,0.5);
    background-image: 
        conic-gradient(
            var(--bg-color) 0deg 9deg,
            #fff 9deg 27deg,
            var(--bg-color) 27deg 45deg,
            #fff 45deg 63deg,
            var(--bg-color) 63deg 81deg,
            #fff 81deg 99deg,
            var(--bg-color) 99deg 117deg,
            #fff 117deg 135deg,
            var(--bg-color) 135deg 153deg,
            #fff 153deg 171deg,
            var(--bg-color) 171deg 189deg,
            #fff 189deg 207deg,
            var(--bg-color) 207deg 225deg,
            #fff 225deg 243deg,
            var(--bg-color) 243deg 261deg,
            #fff 261deg 279deg,
            var(--bg-color) 279deg 297deg,
            #fff 297deg 315deg,
            var(--bg-color) 315deg 333deg,
            #fff 333deg 351deg,
            var(--bg-color) 351deg 360deg
        );
}

.board-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    border-radius: 50%;
    border: 5px solid var(--primary-accent); /* Double ring color */
    box-shadow: 0 0 10px var(--primary-accent);
}

.bullseye {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 15%;
    height: 15%;
    background: var(--secondary-accent);
    border-radius: 50%;
    box-shadow: 0 0 15px var(--secondary-accent);
}

/* Responsive */
@media (max-width: 768px) {
    .site-title {
        font-size: 2.5rem;
    }
    .darts-menu {
        grid-template-columns: 1fr;
    }
    .content-wrapper {
        padding: 1rem;
    }
}