:root {
    --bg-color: #080b16;
    --panel-color: #12172a;
    --text-color: #ffffff;
    --primary-color: #4facfe;
    --accent-color: #ffd700;
    --danger-color: #ff4b4b;
    --success-color: #00e676;
    --border-color: #2a3660;
    --accent-border: #374880;
    --font-pixel: 'M PLUS Rounded 1c', sans-serif;
    --font-main: 'M PLUS Rounded 1c', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-color);
    background-image: url('../assets/image/UI/BG.webp');
    background-repeat: repeat;
    color: var(--text-color);
    font-family: var(--font-main);
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    width: 100%;
    height: 100%;
    overflow: hidden;
    overscroll-behavior: none;
}

/* 仮想キャンバスのベース */
#app {
    background-color: var(--bg-color);
    position: absolute;
    /* script.js が中央配置・スケーリングを行います */
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 0 80px rgba(0, 0, 0, 0.95), 0 0 200px rgba(20, 50, 120, 0.35), inset 0 1px 0 rgba(100, 160, 255, 0.1), inset 0 -1px 0 rgba(0, 0, 0, 0.5);
    outline: 4px solid rgba(79, 172, 254, 0.22);
    opacity: 0;
    transition: opacity 0.15s ease-in;
}

/* 各種画面 */
.screen {
    display: none;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.screen.active {
    display: flex;
}