.game-frame-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    background-color: #000;
}

#game-frame {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.fullscreen-button {
    position: absolute;
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
    z-index: 1000;
    font-size: 14px;
}

#fullscreen-btn {
    bottom: 16px;
    right: 16px;
}

#exit-fullscreen-btn {
    top: 16px;
    right: 16px;
    display: none;
}

.fullscreen-button:hover {
    background: rgba(0, 0, 0, 0.8);
}

@media (max-width: 768px) {
    .fullscreen-button {
        padding: 6px 12px;
        font-size: 12px;
    }
}

/* 全屏模式样式 */
.game-frame-container:fullscreen {
    padding-bottom: 0;
    height: 100vh;
}

.game-frame-container:fullscreen #game-frame {
    width: 100vw;
    height: 100vh;
}

/* Webkit 前缀支持 */
.game-frame-container:-webkit-full-screen {
    padding-bottom: 0;
    height: 100vh;
}

.game-frame-container:-webkit-full-screen #game-frame {
    width: 100vw;
    height: 100vh;
}

/* Mozilla 前缀支持 */
.game-frame-container:-moz-full-screen {
    padding-bottom: 0;
    height: 100vh;
}

.game-frame-container:-moz-full-screen #game-frame {
    width: 100vw;
    height: 100vh;
}