@font-face {
    font-family: 'number';
    src: url("DIN1451.ttf");
}

* {
    margin: 0;
    padding: 0;
    touch-action: none;
}

#contain {
    width: 100vw;
    max-width: 500px;
    height: 100vh;
    background: #232323;
    margin: 0 auto;
}

.header {
    background: #2a2a2a;
    width: 100%;
    min-height: 80px;
}

.footer {
    background: #2a2a2a;
    width: 100%;
    max-width: 500px;
    min-height: 60px;
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
}

#ball-count {
    color: #aaa;
    font-size: 1.2em;
    font-family: 'number', monospace;
}

#level {
    position: absolute;
    top: 0;
    left: 0;
    color: #fff;
    font-size: 3em;
    width: 100%;
    text-align: center;
}

body {
    background: #232323;
}

/* 覆盖层通用样式 */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.overlay-content {
    background: #2a2a2a;
    border-radius: 12px;
    padding: 32px 28px;
    text-align: center;
    min-width: 240px;
    max-width: 90vw;
}

.overlay-title {
    color: #fff;
    font-size: 1.5em;
    margin-bottom: 24px;
    font-weight: normal;
}

.mode-btn {
    display: block;
    width: 100%;
    padding: 14px 0;
    margin-bottom: 12px;
    border: none;
    border-radius: 8px;
    background: #f8b42b;
    color: #000;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}

.mode-btn:last-child {
    margin-bottom: 0;
}

.mode-btn:hover {
    background: #e8a020;
}

.mode-btn:active {
    background: #d09018;
}

.final-score {
    color: #f8b42b;
    font-size: 2em;
    margin-bottom: 24px;
    font-family: 'number', monospace;
}